WO2020116009A1 - Filter element for backwash filtering device, and backwash filtering device - Google Patents

Filter element for backwash filtering device, and backwash filtering device Download PDF

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Publication number
WO2020116009A1
WO2020116009A1 PCT/JP2019/038869 JP2019038869W WO2020116009A1 WO 2020116009 A1 WO2020116009 A1 WO 2020116009A1 JP 2019038869 W JP2019038869 W JP 2019038869W WO 2020116009 A1 WO2020116009 A1 WO 2020116009A1
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WO
WIPO (PCT)
Prior art keywords
peripheral side
surface portion
filter
filter element
fluid
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Application number
PCT/JP2019/038869
Other languages
French (fr)
Japanese (ja)
Inventor
山田 典生
崇 松尾
竜二 久保
Original Assignee
神奈川機器工業株式会社
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Publication of WO2020116009A1 publication Critical patent/WO2020116009A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D24/00Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/48Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof integrally combined with devices for controlling the filtration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/60Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62Regenerating the filter material in the filter
    • B01D29/66Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps

Definitions

  • the present invention relates to a filter element for a backwash type filtration device and a backwash type filtration device.
  • This backwashing type filtration device includes a hollow cylindrical housing that houses a plurality of filter elements, and while filtering the fluid before filtration that flows from the outside of the housing with the filter element, the filtered fluid is filtered in order.
  • the filter element is used for cleaning.
  • the backwash type filtration device includes a housing that houses a plurality of filter elements (cylindrical filter elements), a rotating shaft that is installed in the center of the housing, and a motor that rotates the rotating shaft. And a backwash arm (backwash pipe) connected to the lower end of the rotating shaft.
  • a backwash arm backwash pipe
  • a shelf plate (partition plate) 7 in which a plurality of through holes 7b are formed is installed inside a housing (not shown). It is divided into a lower area (entrance area) A1 and an upper area (exit area) A2). Further, the housing is connected to an inlet pipe (not shown) for allowing the fluid before filtration into the inside of the housing in the lower area A1, and the filtered fluid flows out from the inside of the housing to the upper area A2 side. An outlet pipe (not shown) for connecting is connected.
  • the lower end portion of the filter element 500 is fixed to each through hole 7b on the upper surface thereof (a plurality of filter elements 500 are installed on the upper area A2 side inside the housing). It is in a state).
  • the backwash arm 20 is arranged, and any of the plurality of through holes 7b formed in the shelf board 7 is rotated by the rotation of the rotation shaft (not shown). The crabs are brought into contact with each other in this order and connected to communicate with the inside of the filter element 500.
  • the filter element 500 is a hollow filter frame formed by winding a filter material composed of wire mesh or notch wire around a cylindrical filter frame (not shown). Further, the filter element 500 is closed at one end side (upper end side) with the upper lid 514 and is open at the other end side (lower end side), and is aligned with the through hole 7 b of the shelf board 7. It is fixed in the closed state. Specifically, the filter element 500 is positioned such that its inner peripheral side surface is flush with the inner peripheral side surface of the through hole 7b, and its lower end portion is fixed to the upper surface of the shelf board 7.
  • the unfiltered fluid that has flowed into the lower area A1 of the housing enters the cylinder of the filter element 500 from the lower area A1, passes through the side surface portion of the filter element 500, and is filtered. After that, the filtered fluid is discharged from an outlet pipe (not shown) connected to the upper area A2 of the housing.
  • the filter elements 500 arranged on both the left and right sides to which the backwash arm 20 is not connected filter the unfiltered fluid that has flowed into the lower area A1 of the housing (the arrow in the figure indicates the fluid). Shows the direction of flow).
  • the filter element 500 to which the backwash arm 20 is connected is washed, and the backwash liquid is discharged from the housing.
  • the filter element 500 arranged in the center, to which the backwash arm 20 is connected is backwashed (the arrow in the figure indicates the flow direction of the fluid).
  • the backwashing type filtration device in order for the backwashing type filtration device to secure "filtration performance" for filtering a desired amount of fluid, it is necessary to accommodate and install a large number of filter elements inside the housing (for example, about 24 filters). It is necessary to accommodate and install the filter element of.
  • the backwashing type filtration device adopts a configuration in which a large number of filter elements are accommodated, a problem arises in that while the filtration performance can be ensured, the backwashing type filtration device becomes large. This is because the housing of the backwash type filtration device becomes large in size when a large number of filter elements are to be accommodated. That is, the backwashing type filtration device of the related art has a technical problem that the device itself becomes large due to its structure. In particular, since the installation space is limited inside the ship, there is a strong demand for downsizing of the backwash type filtration device.
  • the present invention has been made in view of the above problems, and an object thereof is to provide a filter element for a backwash filtration device that can obtain a desired filtration performance and can downsize the backwash filtration device. It is in. Another object of the present invention is to provide a backwashing type filtration device which can obtain desired filtration performance and can be downsized.
  • the present invention made in order to solve the above-mentioned problems is a backwash type which is mounted on a backwash type filtration device to filter a fluid before filtration flowing in the device and to perform backwashing using the filtered fluid.
  • a filter element for a filtering device wherein an outer element formed in a hollow cylindrical shape having both ends penetrating, and a hollow cylinder arranged in the cylinder of the outer element with the same central axis as the outer element.
  • the inner element formed in a shape of a circle, the radial length of the outer element is larger than the radial length of the inner element, and the inner element has an open upper end.
  • the lower end is a closed lower end portion, and on the upper end side thereof, between the inner peripheral side surface portion of the upper end portion of the outer element and the outer peripheral side surface portion of the upper end portion of the inner element. It is characterized in that an annular upper lid for closing the formed gap portion is provided.
  • both the filtering process and the backwashing process can be supported.
  • the inner peripheral side surface portion of the outer element forming the filter element is positioned so as to be flush with the inner peripheral side surface portion of the through hole 7b of the shelf board 7, and the lower end portion of the filter element is racked. It is fixed on the upper surface of the plate 7. Then, the filter element attached to the backwashing type filtration device as described above has flown into the lower area A1 shown in the figure when the backwashing arm 20 is not connected via the through hole 7b.
  • the fluid before filtration passes through the through hole 7b, and from the gap between the inner peripheral surface measuring portion of the lower end of the outer element and the outer peripheral side surface portion of the lower end of the inner element to the inner peripheral surface measuring portion of the outer element, It flows into a region (first region) between the inner element and the outer peripheral side surface portion.
  • a part of the unfiltered fluid that has flowed into the first region passes through the outer peripheral side surface portion from the inner peripheral side surface portion of the outer element, is filtered, and flows out to the upper area A2 outside the filter element.
  • the other part of the fluid before filtration that has flowed into the first region is filtered by passing through the inner peripheral side surface portion from the outer peripheral side surface portion of the inner element, and through the opening of the upper end portion of the inner element, Flows out to the upper area A2 outside.
  • the filter element of the present invention is filtered on both the outer and inner elements.
  • the filter element when the backwash arm 20 is connected through the through hole 7b, the lower end portion of the filter element is blocked by the backwash arm 20 and the inflow of fluid before filtration is stopped, and the inner element is stopped.
  • the filtered fluid in the upper area A2 flows into the cylinder of the inner element through the opening at the upper end of the.
  • the fluid flowing into the cylinder passes from the inner peripheral side surface portion of the inner element to the outer peripheral side surface portion, and the first region (the region between the inner peripheral surface measuring portion of the outer element and the outer peripheral side surface portion of the inner element). ) And the inner element is backwashed. Further, the filtered fluid in the upper area A2 passes from the outer peripheral side surface portion of the outer element to the inner peripheral side surface portion, flows into the first region, and the outer element is backwashed. The fluid that has flowed into the first region is discharged through the backwash arm. In this way, the filter element can be backwashed with both the outer and inner elements.
  • the filter element for the backwash type filtration device of the present invention can be filtered by both the outer element and the inner element, and the filter element of the above-mentioned conventional backwash type filtration device.
  • the filtration processing area is increased. That is, according to the filter element of the present invention, the “filtration performance” per filter element is improved as compared with the filter element 500 of the prior art.
  • both the outer element and the inner element can be backwashed simultaneously due to the configuration of the lower end blocking portion and the upper lid. That is, the present invention has a structure in which the filtration processing area is increased, while maintaining the backwash function.
  • the filter element of the present invention when the filter element of the present invention is mounted on the backwash type filtering device, the number of filter elements can be reduced as compared with the case of mounting the filter element of the prior art. Therefore, it is possible to reduce the size of the housing that constitutes the backwashing type filtration device, and as a result, reduce the size of the backwashing type filtration device W itself.
  • the inner element is formed such that the lengthwise dimension of the side surface portion is smaller than the lengthwise dimension of the side surface portion of the outer element, and the inner element is The position in the height direction is attached to the upper lid so that the position in the height direction of the upper end portion of the outer element coincides with the position of the lower end of the side surface portion of the side surface portion of the outer element. It is desirable that it is arranged above the lower end and that the lower end closing portion is formed in an inverted conical shape.
  • the inner element is formed such that the lengthwise dimension of the side surface portion is smaller than the lengthwise dimension of the side surface portion of the outer element, and the inner element is The position in the height direction is attached to the upper lid so that the position in the height direction of the upper end portion of the outer element coincides with the position of the lower end of the side surface portion of the side surface portion of the outer element. It is desirable that it is arranged above the lower end and that the lower end blocking portion is formed in a substantially disc shape.
  • the filter element of the present invention has an outer element and an inner element arranged in the cylinder of the outer element with the same central axis as the outer element, and the lower end of the inner element closes the lower end of the inner element. A lower end blocking portion is provided. Then, as described above, when the filter element is attached to the shelf plate 7 (see FIG. 12) of the backwash type filtering device, the inner peripheral surface measuring portion of the lower end portion of the outer element and the outer peripheral side surface portion of the lower end portion of the inner element. The fluid before filtration flows into the area (first area) between the inner peripheral surface-measuring portion of the outer element and the outer peripheral side surface portion of the inner element from the gap between the inner element and the inner peripheral surface.
  • the cross-sectional area of the flow path of the “inlet of the filter element” into which the “fluid before filtration” flows is smaller. Therefore, the flow velocity at the inlet portion becomes high, and the filtration efficiency may decrease. Therefore, the length dimension of the side surface of the inner element in the longitudinal direction is made smaller than the length dimension of the side surface of the outer element in the longitudinal direction, and the position of the lower end of the side surface of the inner element is set to the side surface of the outer element. It is arranged above the lower end of the inner element, and the lower end closing portion that closes the lower end of the inner element is formed in an "inverse cone shape" or a "disc shape".
  • the present invention includes a hollow cylindrical housing that houses a plurality of filter elements, and while filtering the fluid before filtration that flows from the outside by the filter element, the filtered fluid is sequentially used by using the filtered fluid.
  • a backwashing type filtration device for washing an element comprising: a shelf plate that partitions the inside of the housing into two areas, an upper area and a lower area; and a fluid that is formed on the lower side of the housing and is not filtered yet.
  • a shaft and a backwash arm that is disposed in the lower area and is connected to the rotary shaft and that operates with the rotation of the rotary shaft.
  • the element includes an outer element formed in a hollow cylindrical shape having both ends penetrating, and an inner element formed in a hollow cylindrical shape having the same central axis as the outer element in the cylinder of the outer element. And an upper end closing portion formed in an annular shape that closes a gap formed between the inner peripheral side surface portion of the upper end portion of the outer element and the outer peripheral side surface portion of the upper end portion of the inner element,
  • the radial length of the outer element is larger than the radial length of the inner element, and the inner element has a lower end closed portion in which the upper end is open and the lower end is closed.
  • the inner peripheral side surface portion of the outer element is positioned so as to be flush with the inner peripheral side surface portion of the through hole of the shelf board, and the lower end portion of the filter element is formed of the shelf board.
  • the backwash arm is fixed to the upper surface, one end of the backwash arm moves while abutting against the lower end surface of the shelf plate, and the backwash arm is connected to any of the plurality of through holes and is fixed at the position of the connected through hole.
  • the filter element communicates with the inside of the cylinder.
  • the fluid before filtration flowing from the inlet of the apparatus passes through the through hole and the lower end of the outer element. Region between the inner peripheral surface of the inner element and the outer peripheral side surface of the inner element, and a first region between the inner peripheral surface of the outer element and the outer peripheral side surface of the inner element. Part of the fluid before filtration that has flowed into the first region and has passed through the outer peripheral side surface portion from the inner peripheral side surface portion of the outer element, and is filtered to the upper side outside the filter element.
  • the other part of the unfiltered fluid that has flowed out into the area and has flowed into the first region is filtered by passing through the inner peripheral side surface portion from the outer peripheral side surface portion of the inner element, and opening at the upper end portion of the inner element. Through to the upper area outside the filter element. Further, in the filter element, when a backwash arm is connected through the through hole, a lower end portion of the filter element is closed by the backwash arm to stop inflow of fluid before filtration, and The filtered fluid in the upper area flows into the cylinder of the inner element from the opening of the upper end of the inner element, and the fluid flowing into the cylinder flows from the inner peripheral side surface portion to the outer peripheral side surface portion of the inner element.
  • the back washing process of the inner element After passing through and flowing into the first region, the back washing process of the inner element is performed, and further, the filtered fluid in the upper area passes from the outer peripheral side surface portion of the outer element to the inner peripheral side surface portion, and The outer element is backwashed by flowing into the first area, and the fluid flowing into the first area is discharged through the backwash arm.
  • the backwash filter of the present invention is provided with the filter element capable of performing the filtering process with both the outer element and the inner element, and the filter element 500 (see FIG. 12) of the above-described backwash filter of the related art.
  • the filter processing area per filter element is increased. That is, in the filter element of the backwashing type filtration device of the present invention, the “filtration performance” per filter element is improved as compared with the filter element 500 of the prior art.
  • the backwashing type filtration device of the present invention is capable of simultaneously backwashing both the outer element and the inner element constituting the housed filter element. That is, the present invention has a structure in which the filtration processing area of the filter element is increased, while maintaining the backwash function.
  • the number of filter elements can be reduced as compared with the backwashing type filtration device of the related art. As a result, it is possible to reduce the size of the housing that constitutes the backwash type filtration device, and to reduce the size of the backwash type filtration device W itself.
  • the present invention includes a hollow cylindrical housing that houses a plurality of filter elements, and while filtering the fluid before filtration that flows from the outside by the filter element, the filtered fluid is sequentially used by using the filtered fluid.
  • a backwashing type filtration device for washing an element comprising: a shelf plate partitioning the inside of the housing into two areas, an upper area and a lower area; and a fluid that is formed on the lower side of the housing and is not filtered.
  • a shaft and a backwash arm that is disposed in the lower area and is connected to the rotary shaft and that operates with the rotation of the rotary shaft.
  • the element includes an outer element formed in a hollow cylindrical shape having both ends penetrating, and a hollow/inverse conical inner element arranged in the cylinder of the outer element with the same central axis as the outer element.
  • the element has a top portion arranged downward and an upper end portion opened, and the length dimension in the radial direction decreases from the upper end portion to the lower end portion, and the radial length of the upper end portion The dimension is smaller than the radial length of the outer element, and further, in the filter element, the inner peripheral side surface portion of the outer element is flush with the inner peripheral side surface portion of the through hole of the shelf board.
  • the present invention includes a hollow cylindrical housing that houses a plurality of filter elements, and while filtering the fluid before filtration that flows from the outside by the filter element, the filtered fluid is sequentially used by using the filtered fluid.
  • a backwashing type filtration device for washing an element comprising: a shelf plate partitioning the inside of the housing into two areas, an upper area and a lower area; and a fluid that is formed on the lower side of the housing and is not filtered.
  • a shaft and a backwash arm that is disposed in the lower area and is connected to the rotary shaft and that operates with the rotation of the rotary shaft.
  • the element has a hollow-cylindrical first element having both ends penetrating, and the element is arranged in the cylinder of the first element with the central axis being the same as that of the first element and having both ends penetrating therethrough.
  • a second element formed in the shape of a hollow cylinder, and a third cylindrical element formed in the cylinder of the second element and having the same central axis as the second element and having both ends penetrating therethrough.
  • An annular first lower end portion closing portion that closes a gap formed between the lower end portion and the outer peripheral side surface portion of the third element, an inner peripheral side surface portion of the upper end portion of the first element, and the second
  • An annular first upper end blocking portion that closes a gap formed between the upper end portion of the element and the outer peripheral side surface portion, an inner peripheral side surface portion of the upper end portion of the third element, and an upper end portion of the fourth element
  • An annular second upper end closing portion that closes a gap formed between the outer peripheral side surface portion and the outer peripheral side surface portion, and the fourth element has an upper end opened and a lower end closed;
  • the radial length of the element is larger than the radial length of the second element, and the radial length of the second element is the radial length of the
  • the inner peripheral side surface is the shelf plate Is positioned so as to be flush with the inner peripheral side surface portion of the through hole, and the lower end portion thereof is fixed to the upper surface of the shelf plate, and one end of the backwash arm abuts on the lower end surface of the shelf plate. While moving while being connected to any of the plurality of through holes, the inside of the cylinder of the filter element fixed at the position of the connected through hole is communicated.
  • a filter element for a backwash type filtration device which can obtain a desired filtration performance and can downsize the backwash type filtration device. Further, according to the present invention, it is possible to provide a backwashing type filtration device which can obtain a desired filtration performance and can be downsized.
  • FIG. 1 It is a schematic diagram for demonstrating the filtration process process and the backwash process process of the backwash type filtration apparatus of 1st Embodiment of this invention. It is a schematic diagram which showed the modification of the backwashing type filtration apparatus of 1st Embodiment of this invention.
  • (B) is a schematic diagram showing a filter element of the backwashing type filtration device of the third embodiment. It is the schematic diagram which showed the modification of the backwashing type filtration apparatus of 3rd Embodiment of this invention, (a) is the schematic diagram which showed the 1st modification of the backwashing type filtration apparatus of 3rd Embodiment. , (B) is the schematic diagram which showed the 2nd modification of the backwashing type filtration apparatus of 3rd Embodiment. It is the schematic diagram which showed the internal structure of the housing of the backwash type filtration apparatus of a prior art.
  • FIG. 1 is a schematic view showing the overall configuration of the backwashing type filtration device of the first embodiment.
  • FIG. 2 is a schematic diagram for explaining the filter element for the backwashing type filtration device of the first embodiment, wherein (a) is a schematic diagram showing a vertical cross section of the filter element, FIG. 6B is a schematic diagram showing a lower lid provided at the lower end of the filter element, and FIG. 9C is a schematic diagram showing an upper lid provided at the upper end of the filter element.
  • FIG. 3 is a schematic diagram for explaining a through hole for a filter element provided on the shelf plate of the backwashing type filtration device of the first embodiment.
  • the backwashing filtration apparatus W of the first embodiment includes a hollow cylindrical housing 1 that houses a plurality of filter elements 10, and a “fluid before filtration” that flows in from the outside of the housing 1. While filtering "(original liquid before filtration)", the filter element 10 is sequentially cleaned (backwashing process) using the filtered fluid (filtration process liquid).
  • the first embodiment is characterized by the configuration of the filter element 10. Therefore, the configuration of the filter element 10 will be described in detail below, and the description of the other configurations will be simplified.
  • the above-mentioned housing 1 is provided with a hollow cylindrical main body 1a having an open top and a bottom 1a1, and a dome-shaped lid 1b closing the top of the main body 1a.
  • a shelf 7 is installed inside the housing 1, and the inside of the housing 1 is partitioned by the shelf 7 into an inlet side area (lower area) A1 and an outlet side area (upper area) A2. .
  • the main body portion 1a is formed with a device inlet 4 at a lower end side surface portion thereof for allowing a fluid to flow into the lower area A1.
  • the main body portion 1a is formed with a device outlet 5 for discharging the fluid filtered from the upper area A2 on the side surface portion on the upper end side thereof.
  • the shelf plate 7 is formed in a substantially disc shape, and a through-hole 7a for the rotary shaft into which the rotary shaft 8 is rotatably inserted is formed in the center thereof.
  • through holes 7b (7b1, 7b2) for a plurality of filter elements are formed on a concentric circle centered on the through hole 7a.
  • through holes 7b (7b1, 7b2) are formed in two concentric circles (inner circle, outer circle) having different radii.
  • the through hole 7b (7b1, 7b2) is formed in a circular shape in plan view, as shown in FIG. In FIG. 3, the through hole 7a at the center of the shelf 7 and the through hole 7b1 arranged on the outer side are omitted to simplify the description.
  • the through hole 7a is similar to the through hole 7b and is formed in a circular shape in plan view.
  • the lower end of the filter element 10 is airtightly fixed to each through hole 7b (7b1, 7b2), so that the plurality of filter elements 10 are supported and fixed to the shelf plate 7. Also, with this configuration, the lower area A1 of the housing 1 communicates with the inside of the cylinder of the filter element 10. The fluid flowing into the housing 1 cannot move from the lower area A1 (or the upper area A2) to the upper area A2 (or the lower area A1) without passing through the inside of the cylinder of the filter element 10. There is.
  • a rotary shaft 8 extending from the top of the lid 1b toward the shelf 7 is provided.
  • One end (upper end) of the rotating shaft 8 is connected to a rotating shaft (not shown) of a motor 9 mounted on the upper end of the lid 1, and is rotated by driving the motor 9.
  • the other end (lower end) side of the rotary shaft 8 is inserted into the through hole 7a at the center of the shelf 7 and projects to the lower area A1.
  • the motor 9 is driven by being controlled by a control circuit (not shown).
  • a backwash arm (backwash pipe) 20 is connected to the lower end of the rotating shaft 8 extending to the lower area A1 of the housing 1.
  • the backwash arm 20 is integrally formed with a base portion 20a fixed to a lower end portion of the rotary shaft 8, and an upper end surface thereof rotates together with the rotary shaft 8 while sealing a lower surface of the shelf plate 7 in a watertight manner. ing.
  • the backwash arm 20 includes a base portion 20a, a vertical pipe 20b connected to the base portion 20a, and two L-shaped pipes 20c and 20d connected to a side surface portion of the vertical pipe 20b.
  • the vertical pipe 20b is rotatably connected to a discharge pipe 30 having an upper end sealed by a base 20a and a lower end communicating with the backwash liquid discharge pipe 40.
  • one end of the L-shaped tube 20c is connected to the side surface of the vertical tube 20b and communicates with the vertical tube 20b, and the upper end surface formed at the other end is in contact with the lower surface of the shelf board 7. ..
  • the length of the L-shaped tube 20c is designed so that the upper end surface thereof rotates along a plurality of through holes 7b1 formed on the shelf plate 7. Further, one end of the L-shaped pipe 20d is connected to the side face of the vertical pipe 20b and communicates with the vertical pipe 20b, and the upper end face formed at the other end is in contact with the lower face of the shelf board 7. .. The length of the L-shaped tube 20d is designed so that the upper end surface thereof rotates along a plurality of through holes 7b2 formed in the shelf plate 7.
  • the backwash arm 20 operates according to the rotation of the rotary shaft 8 rotated by the motor 9, and the upper end surfaces of the L-shaped tubes 20c and 20d are brought into close contact with the lower surface of the shelf plate 7, and the lower end portion of the filter element 10 is moved.
  • the through holes 7b (7b1 and 7b2) that are installed are arranged at positions that match.
  • the upper end surfaces of the L-shaped pipes 20c and 20d are continuously (or intermittently) rotated while sealing the shelf 7, and are successively communicated with the filter element 10.
  • the L-shaped tube 20c is operated by the motor 9 controlled and controlled by a control circuit (not shown), and the upper end surface thereof is connected to one of the plurality of through holes 7b1 formed in the shelf board 7. It As a result, the L secondary pipe 20c is connected to the filter element 10 installed at the position of the through hole 7b1 via the connected through hole 7b1 ("L-shaped pipe 20c" and "filter element 10" to be described later. The area between the inner peripheral surface measuring portion of the outer element 11 and the outer peripheral side surface portion of the inner element 12 communicate with each other. Further, the L-shaped tube 20d is operated by the motor 9 controlled and operated by the control circuit, and the upper end surface thereof is connected to one of the plurality of through holes 7b2 formed in the shelf plate 7.
  • the L-shaped pipe 20d is connected to the filter element 10 installed at the position of the through hole 7b2 via the connected through hole 7b2 (the L-shaped pipe 20d and the "outside of the filter element 10" described later.
  • the area between the inner peripheral surface measuring portion of the element 11 and the outer peripheral side surface portion of the inner element 12 communicate with each other).
  • the filter element 10 includes an outer element (outer filter element) 11 formed in a hollow cylindrical shape having both ends penetrating, and an outer element 11 in a cylinder of the outer element 11. And an inner element (inner filter element) 12 formed in the shape of a hollow cylinder having the same central axis and having both ends penetrating, and closing the opening of the lower end of the inner element 12 on the lower end side of the filter element 10.
  • an upper cover (upper end closed portion) 14 (a donut-shaped plate shape).
  • the upper lid 14 has an annular shape (a donut shape) having a circular opening (through hole) 14a formed at the center thereof in the same length dimension as the diameter dimension of the inner element 12 (diameter dimension of the inner peripheral side surface portion). It is formed in a plate shape.
  • the inside of the cylinder of the inner element 12 communicates with the outside of the filter element 10 (the area of the upper area A2) via the opening 14a.
  • the outer element 11 is formed to have the same height dimension as the inner element 12 (the length dimension in the longitudinal direction is the same dimension). Further, the length dimension of the diameter of the outer element 11 (length dimension in the radial direction) is larger than the length dimension of the diameter of the inner element 12 (length dimension in the radial direction).
  • both the outer element 11 and the inner element 12 are formed into a cylindrical shape by spirally winding a filter material such as a notch wire around a metal frame body (not shown) such as stainless steel. Use the one.
  • the frame body is composed of, for example, a circular ring-shaped upper member, a circular ring-shaped lower member, and a rod-shaped wire support member arranged between the upper member and the lower member. Any thing can be used.
  • the upper member and the lower member are arranged with a predetermined gap (opposed to each other), and the plurality of wire support members are arranged with a predetermined gap between the upper member and the lower member. It is formed by opening and arranging in a circumferential shape, and fixing both ends of each wire support member to an upper member and a lower member, respectively.
  • the frame body used for the outer element 11 has a larger diameter length than the frame body used for the inner element.
  • the hollow cylindrical outer element 11 is formed by spirally winding and stacking the notch wire on the circumferentially arranged wire support material of the frame for the outer element 11 while being circumscribed. ..
  • the hollow cylindrical inner element 12 is formed by spirally winding and stacking the notch wire on the circumferentially arranged wire support material of the frame for the inner element 12 while being circumscribed.
  • the filter element 10 is assembled as follows, for example. Specifically, the inner element 12 formed as described above is arranged in the cylinder of the outer element 11 formed as described above, and positioning is performed so that the central axes of the outer element 11 and the inner element 12 coincide with each other. .. That is, the outer element 11 and the inner element 12 are arranged with their central axes the same. Then, a circular plate-shaped lower lid 13 that closes the opening at the lower end of the inner element 12 (inside the cylinder at the lower end of the inner element 12) on the lower end side of the filter element 10 is attached.
  • an upper lid 14 is attached which closes a gap formed between the inner peripheral side surface of the outer element 11 and the outer peripheral side surface of the inner element 12. As a result, the filter element 10 is completed.
  • the outer element 11 and the inner element 12 are connected by the upper lid 14 to form an integrated component (product).
  • the filter element 10 is attached to the position of the through hole 7b of the shelf plate 7 installed inside the housing 1 of the backwash filter W. Specifically, the filter element 10 is positioned such that the inner peripheral side surface portion of the outer element 11 is flush with the inner peripheral side surface portion of the through hole 7 b of the shelf board 7, and the lower end portion thereof is located on the shelf board 7. It is fixed and installed on the upper surface of.
  • the outer element 11 and the inner element 12 constituting the filter element 10 are formed in a hollow cylindrical shape by spirally winding a filter material such as a notch wire around the frame body. It is not limited.
  • the outer element 11 and the inner element 12 may be those capable of allowing a fluid to pass through a side surface portion formed of a filter medium for filtering and performing backwashing.
  • the outer element 11 and the inner element 12 may use wire mesh instead of the notch wire as the filter medium.
  • FIG. 4 is a schematic diagram for explaining the filtration process and the backwash process of the backwash type filtering device of the first embodiment.
  • the arrow shown in FIG. 4 has shown the flow of the fluid.
  • the filter element 10 installed inside the housing 1 of the backwashing filtration apparatus W performs a filtering process when the backwash arm 20 is not connected to the lower end of the backwash arm 20 through the through hole 7b of the shelf plate 7. Is configured to do.
  • the first filter element 10 from the right side and the third filter element 10 from the right side perform the filtering process.
  • the filter elements 10 on both the left and right sides perform the filtering process.
  • the filter element 10 that performs the filtering process flows from the device inlet 4 into the lower area A1.
  • the “fluid before filtration (fluid containing a filtration target (adhesion) such as dust)” flows through the through hole 7b and flows from the opening at the lower end of the filter element 10.
  • the opening of the lower end portion of the inner element 12 constituting the filter element 10 is closed and closed by the lower lid 13, and the inner circumferential surface of the lower end portion of the outer element 11 and the inner element 12 are closed.
  • the gap between the outer peripheral side surface of the lower end of the is opened and opened. Therefore, as shown in FIG.
  • the inside of the outer element 11 is separated from the gap between the inner peripheral surface section of the lower end of the outer element 11 and the outer peripheral side surface of the lower end of the inner element 12.
  • the “fluid before filtration” flows into the region (first region) between the peripheral surface portion and the outer peripheral side surface portion of the inner element 12.
  • a gap formed between the inner peripheral side surface of the upper end of the outer element 11 and the outer peripheral side surface of the upper end of the inner element 12 is closed by the upper lid 14. Have been blocked.
  • the inner portion (inside the cylinder) of the inner circumferential surface of the inner element 12 is open.
  • a part of the “fluid before filtration” that has flowed into the region (first region) between the inner peripheral surface measuring portion of the outer element 11 and the outer peripheral side surface portion of the inner element 12 is part of the outer element.
  • the filtering target such as dust contained in the fluid is captured by the outer element 11, and the dust and the like are removed from the fluid that has passed through the outer element 11. That is, the fluid that has passed through the outer element 11 is filtered.
  • the “fluid before filtration” that has flowed into the region (first region) between the inner peripheral surface measuring portion of the outer element 11 and the outer peripheral side surface portion of the inner element 12 has passed through the other portion (passing through the outer element 11). Fluid other than) flows from the outer peripheral side surface portion of the inner element 12 through the inner peripheral side surface portion (that is, passes through the inner element 12) and flows into the cylinder of the inner element 12. At this time, the object to be filtered such as dust contained in the fluid is captured by the inner element 12, and the dust and the like are removed from the fluid that has passed through the inner element 12.
  • the “filtered fluid” that has passed through the inner element 12 and has flowed into the cylinder of the inner element 12 passes through the opening at the upper end of the inner element 12 (and the opening 14 a of the upper lid 14 ), and the It flows out to the outer area (the area of the upper area A2).
  • ⁇ Backwash process>> The filter element 10 installed inside the housing 1 of the backwashing filtration apparatus W is backwashed when the backwash arm 20 is connected to the lower end of the backwash arm 20 through the through hole 7b of the shelf plate 7. Is configured to do.
  • the second filter element 10 from the right side and the fourth filter element 10 from the right side perform backwash processing.
  • the filter element 10 arranged in the center performs the backwashing process.
  • the filter element 10 when the backwash arm 20 is connected through the through hole 7b of the shelf plate 7, the lower end portion of the filter element 10 is closed by the backwash arm 20, and the filter element 10 is closed. The inflow of "fluid before filtration” to the lower end of 10 is stopped. Then, when the inflow of the "fluid before filtration” is stopped, the fluid flowing outside the filter element 10 (the filtered fluid flowing in the upper area A2) flows into the inside of the filter element 10.
  • the upper lid 14 closes a gap formed between the inner peripheral side surface of the upper end of the outer element 11 and the outer peripheral side surface of the upper end of the inner element 12.
  • the opening 14a of the upper lid 14 opens the upper end of the inner element 12.
  • the opening of the lower end of the inner element 12 is closed and closed by the lower lid 13, and the inner circumferential surface of the lower end of the outer element 11 and the inner element 12 are covered. A gap between the lower end portion and the outer peripheral side surface portion is opened and opened.
  • the backwash arm 20 is connected to the filter element 10, and when the “pre-filtration fluid” stops flowing into the lower end portion of the filter element 10, it is released by the opening 14 a of the upper lid 14.
  • the “filtered fluid in the upper area A2” flows into the cylinder of the inner element 12 through the opening at the upper end of the inner element 12. Further, since the opening of the lower end portion of the inner element 12 is closed and closed by the lower lid 13, the “filtered fluid” that has flowed into the cylinder is discharged from the inner peripheral side surface portion of the inner element 12. After passing through the outer peripheral side surface portion (that is, passing through the inner element 12 ), it flows into a region (first region) between the outer peripheral surface measuring portion of the inner element 12 and the inner peripheral side surface portion of the outer element 11.
  • a backwashing process is performed in which adhered substances (objects to be filtered) such as dust adhering to the side surfaces of the inner element 12 are washed away and removed.
  • the fluid that has passed through the inner element 12 is a fluid (backwashing liquid) that contains the backwashed deposit (object to be filtered).
  • the filter element 10 is “filtered” flowing in the upper area A2.
  • the “fluid” passes from the outer peripheral side surface portion of the outer element 11 to the inner peripheral side surface portion (that is, passes through the outer element 11 ), and the outer peripheral surface measuring portion of the inner element 12 and the inner peripheral side surface portion of the outer element 11 It flows into the area between them (first area).
  • a backwashing process is performed in which adhered substances (objects to be filtered) such as dust adhering to the side surface of the outer element 11 are washed away and removed.
  • the fluid that has passed through the outer element 11 is a fluid (backwashing liquid) that contains the backwashed deposit (object to be filtered).
  • the backwash liquid (the fluid that has passed through the inner element 12 and the outer element 11) that has flowed into the region (first region) between the outer peripheral surface measurement portion of the inner element 12 and the inner peripheral side surface portion of the outer element 11. Fluid) flows into the backwash arm 20 through the gap between the inner peripheral surface measuring portion of the lower end of the outer element 11 and the outer peripheral side surface of the lower end of the inner element 12.
  • the backwash liquid that has flowed into the backwash arm 20 enters the backwash liquid outlet pipe 40 via the discharge pipe 30, and is discharged from the backwash type filtering device W.
  • the filter element 10 can be filtered by both the outer element 11 and the inner element 12, and thus the filter element 10 of the above-described conventional backwashing type filtering device can be used.
  • the filtration processing area is increased. That is, according to the filter element 10 of the present embodiment, the “filtration performance” per filter element is improved as compared with the filter element 500 of the related art.
  • both the outer element 11 and the inner element 12 can be backwashed simultaneously due to the configuration of the lower lid 13 and the upper lid 14. That is, in the first embodiment, the backwash function is maintained while the filtration processing area is increased.
  • the number of the filter elements 10 can be reduced in the backwashing filtration device W as compared with the conventional technology.
  • the backwash type filtration device W of the first embodiment can reduce the size of the housing 1 as compared with that of the prior art, and as a result, the backwash type filtration device W itself can be miniaturized. ..
  • FIG. 5 is a schematic diagram showing a modified example of the backwashing type filtration device of the first embodiment.
  • the modified example of the first embodiment is a partial modification of the configurations of the filter element 10 and the shelf plate 7 of the first embodiment.
  • the configurations other than the filter element 10 and the shelf plate 7 are the same as those of the first embodiment. Is the same as. Therefore, in the modification of the first embodiment, the same components as those in the first embodiment are designated by the same reference numerals. Further, in the modified example of the first embodiment, the description will be focused on the parts different from the first embodiment.
  • the structure in which the lower end of the inner element 12 constituting the filter element 10 is closed and closed is changed to the lower lid 13 and provided on the shelf plate 7.
  • the filter element 10 is not provided with the lower lid 13.
  • the shelf plate 7 is formed with an island portion (lower end portion closing portion) 7d having a circular shape in plan view, which closes and closes the opening of the lower end portion of the inner element 12.
  • a through hole 7c having an annular (doughnut-shaped) opening is formed in the shelf plate 7 instead of the through hole 7b (circular through hole) for the filter element.
  • an island portion 7d having a circular shape in plan view is formed on the inner circle side of the through hole 7c.
  • the through hole 7c is formed in an annular shape having the same width dimension as the gap portion between the inner peripheral surface of the outer element 11 and the outer peripheral side surface of the inner element 12 in plan view.
  • the area between the inner peripheral surface of the outer element 11 and the outer peripheral side surface of the inner element 12 communicates with the lower area A1 of the housing 1 through the through hole 7c.
  • the island portion 7d is supported on the side surface portion of the through hole 7c by a supporting member (not shown), closes the opening of the lower end portion of the inner element 12, and plays the same role as the lower lid 13 of the first embodiment.
  • FIG. 6 is a schematic diagram for explaining the filter element for the backwash filter of the second embodiment
  • FIG. 6A is a schematic diagram showing a vertical cross section of the filter element
  • (B) is a schematic diagram showing a lower lid provided at the lower end of the filter element
  • (c) is a schematic diagram showing an upper lid provided at the upper end of the filter element.
  • FIG. 7 is a schematic diagram for explaining the filtration process of the backwashing type filtration device of the second embodiment.
  • the backwashing filter W of the second embodiment is the same as that of the first embodiment except that the filter element 10 used in the first embodiment is replaced by a filter element 100. is there. Therefore, in 2nd Embodiment, the same code
  • the filter element 100 of the second embodiment includes a first element (first filter element) 101 formed in a hollow cylindrical shape with both ends penetrating and a cylinder of the first element 101.
  • a second element (second filter element) 102 which is arranged in the same central axis as the first element 101 and has a hollow cylindrical shape with both ends penetrating, and a second element 102 inside the cylinder.
  • the third element (third filter element) 103 which is formed in the shape of a hollow cylinder and has the same central axis as that of the second element 102 and has both ends passing therethrough, and the third element in the cylinder of the third element 103.
  • 103 and a fourth element (fourth filter element) 104 formed in the shape of a hollow cylinder and arranged with the same central axis and having both ends penetrating therethrough.
  • the first, second, third, fourth element 101, 102, 103, 104 are all formed to have the same height dimension (the length dimension in the longitudinal direction is the same). Further, the diameter length dimension (radial length dimension) of the first element 101 is larger than the diameter length dimension (radial length dimension) of the second element 102, and the second element The length dimension of the diameter of 102 (the length dimension in the radial direction) is larger than the length dimension of the diameter of the third element 103 (length dimension in the radial direction). The length dimension (the length dimension in the radial direction) is larger than the length dimension (the length dimension in the radial direction) of the diameter of the fourth element 104.
  • the filter element 100 has an annular shape (a donut-shaped plate shape) that closes a gap formed between the inner peripheral side surface of the lower end of the second element 102 and the outer peripheral side surface of the lower end of the third element 103.
  • a gap portion 113s1 formed between the inner peripheral side surface portion of the lower end portion of the first element 101 and the outer peripheral side surface portion of the lower end portion of the second element 102 is opened and opened. ..
  • the gap 113s2 formed between the inner peripheral side surface of the lower end of the third element 103 and the outer peripheral side surface of the lower end of the fourth element 104 is opened and opened. ..
  • the filter element 100 has an annular shape (a donut-shaped plate shape) that closes a gap formed between the inner peripheral side surface portion of the upper end portion of the first element 101 and the outer peripheral side surface portion of the upper end portion of the second element 102.
  • the first upper lid (upper end closed portion) 114a, the inner peripheral side surface portion of the upper end portion of the third element 103, and the outer peripheral side surface portion of the upper end portion of the fourth element 104 are closed.
  • An annular (doughnut-shaped plate) second upper lid (upper end closed portion) 114b is provided.
  • the gap 114s1 formed between the inner peripheral side surface of the upper end of the second element 102 and the outer peripheral side surface of the upper end of the third element 103 is opened and opened. Further, in the filter element 100, the opening 114s2 at the upper end of the fourth element 104 is open.
  • the first, second, third and fourth elements 101, 102, 103, 104 are the same as the outer element 11 and the inner element 12 of the first embodiment, and are made of metal such as stainless steel (not shown). It is formed into a cylindrical shape by spirally winding a notch wire around (not shown).
  • the filter element 100 is positioned such that the inner peripheral side surface portion of the first element 101 is flush with the inner peripheral side surface portion of the through hole 7b of the shelf board 7, and the lower end portion thereof is located at the shelf board 7. It is fixed and installed on the upper surface of.
  • the diameter of the through hole 7b of the shelf 7 is the same as the diameter of the inner peripheral side surface of the first element 101 of the filter element 100.
  • FIG. 7 is a schematic diagram for explaining the filtration treatment process of the backwashing type filtration device of the second embodiment.
  • the arrow shown in FIG. 7 has shown the flow of the fluid.
  • the filter element 100 installed inside the housing 1 of the backwashing filtration apparatus W has the backwash arm 20 connected to the lower end portion thereof through the through hole 7b of the shelf plate 7 as in the first embodiment. If not, it is configured to perform a filtration process.
  • the filter element 100 when the backwash arm 20 is not connected to the lower end of the filter element 100 through the through hole 7b of the shelf 7, a gap at the lower end of the filter element 100 is provided.
  • the “fluid before filtration” flows into the region (second region) between the inner peripheral side surface of the first element 101 and the outer peripheral side surface of the second element 102 from the portion 113s1.
  • part of the “fluid before filtration” that has flowed into the region (second region) between the inner peripheral side surface of the first element 101 and the outer peripheral side surface of the second element 102 is the first part.
  • the element 101 After passing through the inner peripheral side surface portion of the element 101 (that is, passing through the first element 101), the element 101 flows out to the area outside the filter element 100 (the upper area A2 area).
  • the object to be filtered such as dust contained in the “fluid before filtration” is captured by the first element 101, and the dust is removed from the fluid that has passed through the first element 101.
  • the “fluid before filtration” flowing into the region (second region) between the inner peripheral side surface portion of the first element 101 and the outer peripheral side surface portion of the second element 102 is the other portion (the first element 101). Fluid other than that which has passed through) passes through the inner peripheral side surface portion from the outer peripheral side surface portion of the second element 102 (that is, passes through the second element 102), and the inner peripheral side surface portion of the second element 102, It flows into a region (third region) between the outer peripheral side surface portion of the third element 103. At this time, the filtration target such as dust contained in the fluid is captured by the second element 102, and the dust and the like are removed from the fluid that has passed through the second element 102.
  • the fluid (filtered fluid) that has passed through the second element 102 and has flowed into the third region is an inner peripheral side surface portion of the upper end portion of the second element 102 and an outer peripheral side surface portion of the upper end portion of the third element 103. From a gap 114s1 between the filter element 100 and the portion, it flows out to the area outside the filter element 100 (the area of the upper area A2).
  • the filter element 100 starts from the gap 113s2 at the lower end of the filter element 100 to the third element 103.
  • the “fluid before filtration” flows into the region (fourth region) formed between the inner peripheral side face of the first element 104 and the outer peripheral side face of the fourth element 104.
  • part of the “fluid before filtration” that has flowed into the region (fourth region) formed between the inner peripheral side surface of the third element 103 and the outer peripheral side surface of the fourth element 104 is , Passing from the inner peripheral side surface portion of the third element 103 to the outer peripheral side surface portion (that is, passing through the third element 103), the inner peripheral side surface portion of the second element 102 and the outer peripheral side surface portion of the third element 103 Flows into a region (third region) between and.
  • the filtering target such as dust contained in the fluid is captured by the third element 103, and the dust and the like are removed from the fluid that has passed through the third element 103.
  • the fluid that has passed through the third element 103 (filtered fluid) has a gap 114s1 between the inner peripheral side surface of the upper end of the second element 102 and the outer peripheral side surface of the upper end of the third element 103. Flows out of the filter element 100 to the area outside (the area of the upper area A2).
  • the “fluid before filtration” flowing into the region (fourth region) formed between the inner peripheral side surface portion of the third element 103 and the outer peripheral side surface portion of the fourth element 104 is Fluid other than the fluid passing through the third element 103) passes from the outer peripheral side surface portion of the fourth element 104 to the inner peripheral side surface portion (that is, passes through the fourth element 104) and enters the cylinder of the fourth element 104. Inflow.
  • the filtering target such as dust contained in the fluid is captured by the fourth element 104, and the dust and the like are removed from the fluid that has passed through the fourth element 104.
  • the fluid that has passed through the fourth element 104 flows out from the opening 114s2 at the upper end of the fourth element 104 to the area outside the filter element 100 (the area of the upper area A2).
  • the filter element 100 installed inside the housing 1 of the backwashing filtration device W has a backwash arm 20 connected to the lower end thereof through the through hole 7b of the shelf plate 7 when the backwash arm 20 is connected. It is configured to perform a washing process.
  • the fluid flows in the direction opposite to the arrow shown in FIG. 7, and each element (first, second, third, fourth element 101, 102, 103, 104) is backwashed.
  • each filter element (first, second, third, fourth element 101, 102, 103, 104) passes through the three flow paths shown below. Backwashed.
  • the step of passing through the first flow path will be described.
  • the "filtered fluid” flowing in the upper area A2 passes from the outer peripheral side surface to the inner peripheral side surface of the first element 101 (that is, the first element 101).
  • the inner peripheral side surface of the first element 101 that is, the first element 101.
  • a backwashing process is performed in which adhering substances (objects to be filtered) such as dust adhering to the side surface of the first element 101 are washed away and removed.
  • the fluid that has passed through the first element 101 is a fluid (backwash liquid) that contains the backwash-processed deposit (object to be filtered).
  • This backwash liquid flows into the backwash arm 20 from the gap 113s1 at the lower end of the filter element 100, together with the "backwash liquid obtained by backwashing the second element 102" described later.
  • the backwash liquid that has flowed into the backwash arm 20 enters the backwash liquid outlet pipe 40 via the discharge pipe 30, and is discharged from the backwash type filtering device W.
  • the step of passing through the second flow path will be described.
  • the "filtered fluid” flowing in the upper area A2 passes through the gap 114s1 at the upper end of the filter element 100 and passes through the inner circumference of the second element 102. It flows into a region (third region) between the surface-measuring portion and the outer peripheral side surface portion of the third element 103.
  • the first lower lid 113a closes the space between the inner peripheral surface measuring portion at the lower end of the second element 102 and the outer peripheral side surface portion at the lower end of the third element 103. Therefore, part of the inflowing “filtered fluid” passes from the inner peripheral side surface portion of the second element 102 to the outer peripheral side surface portion (that is, passes through the second element 102), It flows into a region (second region) between the outer peripheral surface measuring portion of the second element 102 and the inner peripheral side surface portion of the first element 101. At this time, a backwashing process is performed in which adhering substances (objects to be filtered) such as dust adhering to the side surface of the second element 102 are washed away and removed.
  • the fluid that has passed through the second element 102 is a fluid (backwashing liquid) that contains the backwashed deposit (object to be filtered).
  • This backwash liquid flows into the backwash arm 20 through the gap 113s1 at the lower end of the filter element 100 together with the above-mentioned "backwash liquid obtained by backwashing the first element 101", and is discharged from the backwash type filtration device W. Will be done.
  • the other portion (fluid other than the fluid that has passed through the second element 102) passes from the outer peripheral side surface portion of the third element 103 to the inner peripheral side surface portion. Then (that is, after passing through the third element 103), it flows into the region (fourth region) between the inner peripheral surface-measuring portion of the third element 103 and the outer peripheral side surface portion of the fourth element 104. At this time, a backwashing process is performed in which adhering substances such as dust (objects to be filtered) adhering to the side surface of the third element 103 are washed away and removed.
  • the fluid that has passed through the third element 103 is a fluid (backwashing liquid) that contains the backwashed deposit (object to be filtered).
  • the backwash liquid flows into the backwash arm 20 from the gap 113s2 at the lower end of the filter element 100 together with the "backwash liquid obtained by backwashing the fourth element 104" described later.
  • the backwash liquid that has flowed into the backwash arm 20 enters the backwash liquid outlet pipe 40 via the discharge pipe 30, and is discharged from the backwash type filtering device W.
  • the opening of the lower end of the fourth element 104 is closed by the second lower lid 113b. Therefore, the “filtered fluid” that has flowed into the cylinder of the fourth element 104 passes from the inner peripheral side surface portion of the fourth element 104 to the outer peripheral side surface portion (that is, passes through the fourth element 104). , And flows into a region (fourth region) between the outer peripheral surface measuring portion of the fourth element 104 and the inner peripheral side surface portion of the third element 103. At this time, a backwashing process is performed in which adhering substances (filtration target) such as dust adhering to the side surface of the fourth element 104 are washed away and removed.
  • adhering substances filtration target
  • the fluid that has passed through the fourth element 104 is a fluid (backwashing liquid) that contains backwashed deposits (objects to be filtered).
  • This backwash liquid flows into the backwash arm 20 through the gap 113s2 at the lower end of the filter element 100 together with the above-mentioned "backwash liquid obtained by backwashing the third element 103", and is discharged from the backwash type filtration device W. Will be done.
  • the filter element 100 is filtered by the first element 101, the second element 102, the third element 103, and the fourth element 104, that is, by four filter elements.
  • the treatment area is increased, and the filtration treatment area is increased as compared with the filter element 500 (see FIG. 12) of the above-mentioned conventional backwash type filtration device. That is, according to the filter element 100 of the second embodiment, the “filtration performance” per filter element is improved as compared with the filter element 500 of the related art.
  • the filter element 100 of the second embodiment has four filter elements (the first element 101, the second element 101, the second element 111b, the second element element 113b, the second element element 113b, the second element element 113b, and the second element element 114b).
  • the element 102, the third element 103, and the fourth element 104) can be backwashed simultaneously. That is, the present embodiment has a configuration in which the filtration processing area is increased, but the backwash function is also maintained.
  • the backwash type filtration device W of the second embodiment can reduce the size of the housing 1 as compared with the conventional technique, that is, the backwash type filtration device W itself can be miniaturized.
  • FIG. 8 is a schematic diagram showing a modified example of the backwashing type filtration device of the second embodiment.
  • FIG. 9 is a schematic diagram for explaining the through holes provided in the shelf plate of the modified example of the backwashing type filtration device of the second embodiment.
  • the through hole 7a at the center of the shelf plate 7 and the through hole for the filter arranged outside are omitted for simplification of the description.
  • the hatched portion is a through hole for the filter.
  • the modified example of the second embodiment is a partial modification of the configurations of the filter element 100 and the shelf plate 7 of the second embodiment.
  • the configurations other than the filter element 100 and the shelf plate 7 are the same as those of the second embodiment. Is the same. Therefore, in the modification of the second embodiment, the same components as those in the second embodiment are designated by the same reference numerals. Further, in the modified example of the second embodiment, the description will be focused on the parts different from the second embodiment.
  • the modified example of the second embodiment has a configuration in which the gap between the inner peripheral side surface portion of the lower end portion of the second element 102 and the outer peripheral side surface portion of the lower end portion of the third element 103 is closed and closed.
  • the lower lid 113a it is provided on the shelf 7 side.
  • the configuration in which the opening of the lower end portion of the fourth element 104 is closed and closed is changed to the second lower lid 113b and provided on the shelf 7 side.
  • the filter element 100 is not provided with the first lower lid 113a and the second lower lid 113b.
  • the shelf plate 7 is provided with a configuration that serves as the lower lids 113a and 113b.
  • the inner peripheral side surface portion of the lower end portion of the first element 101 and the lower end portion of the second element 102 are provided on the shelf plate 7.
  • An annular (donut-shaped) through hole 7r1 having the same width dimension as the gap with the outer peripheral side surface is formed.
  • the shelf board 7 has the same gap as the inner peripheral side surface of the lower end of the third element 103 and the outer peripheral side surface of the lower end of the fourth element 104.
  • An annular (doughnut-shaped) through hole 7r2 having a width dimension is formed.
  • the shelf plate 7 of the modified example of the second embodiment has an inner peripheral side surface portion of the lower end portion of the second element 102 between the inner peripheral side surface portion of the through hole 7r1 and the outer peripheral side portion of the through hole 7r2.
  • An annular island portion 7e1 that closes the gap is formed between the outer peripheral side surface portion of the third element 103.
  • the shelf plate 7 of the modified example of the second embodiment is provided with a circular island portion 7e2 that closes the opening of the lower end portion of the fourth element 104 on the inner peripheral side surface portion of the through hole 7r2.
  • the area (second area) between the inner peripheral surface-measuring portion of the first element 101 and the outer peripheral side surface portion of the second element 102 has the through hole 7r1 due to the configuration of the shelf plate 7 described above.
  • an area (fourth area) between the inner peripheral side surface of the third element 103 and the outer peripheral side surface of the fourth element 104 communicates with the lower area A1 of the housing 1 via the through hole 7r2. ..
  • the island portion 7e1 is supported on the side surface portion of the through hole 7r1 by a support member (not shown), and the inner peripheral side surface portion of the lower end portion of the second element 102 and the outer peripheral side surface portion of the lower end portion of the third element 103.
  • the island portion 7e2 is supported by a supporting member (not shown) on the side surface portion of the through hole 7r2, closes the opening of the lower end portion of the fourth element 104, and has the same role as the second lower lid 113b of the second embodiment. Plays.
  • FIG. 10 is a schematic diagram for explaining the backwashing type filtration device of the third embodiment of the present invention, and of the first embodiment shown in (a) for comparison with the third embodiment. It is a schematic diagram of a filter element, (b) is a schematic diagram which showed the filter element of the backwashing type filtration apparatus of 3rd Embodiment.
  • the backwashing filtration apparatus W of the third embodiment is the same as the first embodiment except that the filter element 10 used in the first embodiment is changed to a filter element 200a. is there. Therefore, in 2nd Embodiment, the same code
  • the filter element 10 of the first embodiment shown in FIG. 10(a) has an advantage that the filtration area can be increased and the backwash function can be maintained, as compared with the conventional filter element.
  • the cross-sectional area of the flow path of the “inlet portion of the filter element 10” into which the “fluid before filtration” flows is small.
  • the “fluid before filtration” is generated between the inner peripheral measuring surface portion of the lower end portion of the outer element 11 and the lower end portion of the outer peripheral side surface portion of the inner element 12. It is designed to come in through the gap.
  • the filter element 10 of the first embodiment has a structure "inlet part of the filter element 10" into which "fluid before filtration” flows in because of its structure, as compared with the single-type filter element 500 (see FIG. 12) of the related art.
  • the cross-sectional area of the channel is small, and the phenomenon that the flow velocity at the inlet portion becomes fast occurs. As a result, there is a possibility that the lower end side of the filter element 10 may lower the filtration efficiency.
  • the length dimension in the longitudinal direction (axial direction) of the inner element 212 a (when the filter medium is wound around) is larger than that in the first embodiment (see FIG. 10( a )).
  • the length of the formed side surface portion in the longitudinal direction is made shorter, and the position of the lower end portion of the side surface portion of the inner element 212a is lower than that of the side surface portion of the outer element 11 (the side surface portion formed by winding the filter medium).
  • the inner element 212a is arranged on the upper side (that is, the lower end portion of the inner element 212a is arranged at a position separated from the upper surface of the shelf plate 7 above), and the lower end opening is formed in an inverted conical shape.
  • the lower lid 213a is closed to increase the cross-sectional area of the flow path of the "inlet of the filter element 200a" into which the "fluid before filtration” flows.
  • the same components as those in the first embodiment are designated by the same reference numerals. Also, in the description of the third embodiment, the description will focus on the parts that are different from the first embodiment.
  • the filter element 200a of the third embodiment has a hollow cylindrical shape in which the outer element 11 and the outer element 11 have the same central axis as the outer element 11 and the central axis is the same, and both ends penetrate.
  • a lower lid (lower end closed portion) 213a of an inverted conical shape that closes the opening of the lower end of the inner element 212a, and the outer element 11 on the upper end side of the filter element 200a
  • An annular (doughnut-shaped) upper lid (upper end portion closing portion) 14 that closes a gap formed between the inner peripheral side surface portion and the outer peripheral side surface portion of the inner element 212a is provided.
  • the length dimension of the diameter of the outer element 11 is larger than the length dimension of the diameter of the inner element 212a, as in the first embodiment.
  • the length dimension in the longitudinal direction of the inner element 212a (the length dimension in the longitudinal direction of the side surface portion formed by winding the filter medium) is the length dimension in the longitudinal direction of the outer element 11 (the side surface portion formed by winding the filter material). Is smaller than the length dimension in the longitudinal direction).
  • the inner element 212a is attached to the upper lid 14 so that the position of the upper end in the height direction is aligned with the position of the upper end of the outer element 11 in the height direction.
  • the position of the lower end is arranged above the lower end of the side surface portion of the outer element 11 (in the inner element 212a, the position of the lower end thereof is arranged above the upper surface of the shelf plate 7 and at a position above the upper surface of the shelf plate 7). ing).
  • the opening at the lower end of the inner element 212a is closed and closed by an inverted conical lower lid (lower end closing part) 213a.
  • the diameter length dimension of the upper end portion of the lower lid 213a is the same as the diameter length dimension of the inner element 212a.
  • the lower lid 213a is arranged such that the inverted cone-shaped top portion is substantially at the same level as the height of the upper surface of the shelf plate 7 (the lower lid 213a has the inverted cone-shaped top portion and the lower end portion of the outer element 11). Are located in the same position).
  • the cross-sectional area of the flow path of the “inlet portion of the filter element 200a” into which the “fluid before filtration” flows is smaller.
  • the phenomenon that the flow velocity becomes large and the flow velocity at the inlet portion becomes high is prevented.
  • the third embodiment in addition to the same operational effect as in the first embodiment, further reduction in filtration efficiency at the inlet portion of the “fluid before filtration” is prevented.
  • FIG. 11 is a schematic diagram showing a modified example of the backwash type filtering device of the third embodiment, and (a) shows a first modified example of the backwash type filtering device of the third embodiment. It is a schematic diagram and (b) is a schematic diagram showing the 2nd modification of the backwash type filtration device of a 3rd embodiment.
  • the lower lid 213a of the filter 200a of the third embodiment is changed to a lower lid 213b, and the other configurations are the same as those of the third embodiment.
  • the filter element 200b of the first modified example of the third embodiment is similar to the third embodiment shown in FIG. 10(b) in the outer element 11 and the outer element 11 inside the cylinder. 11, an inner element 212a formed in the shape of a hollow cylinder having the same central axis as that of the inner element 212a and having both ends penetrating, and the inner peripheral side surface of the outer element 11 and the outer periphery of the inner element 212a on the upper end side of the filter element 10.
  • An annular (doughnut-shaped) upper lid (upper end portion closing portion) 14 that closes a gap portion formed between the side surface portion and the side surface portion is provided.
  • the lower lid (lower end closing portion) 213b that closes the opening of the lower end of the inner element 212a is formed in a disk shape instead of an inverted conical shape.
  • the first modification of the third embodiment is similar to the above-described third embodiment in that the “fluid before filtration” is introduced as compared with the filter element 10 of the first embodiment (see FIG. 10A).
  • the cross-sectional area of the flow path at the “inlet of the filter element 200b” is large. Therefore, according to the first modification of the third embodiment, it is possible to prevent the phenomenon that the flow velocity at the inlet portion becomes fast and prevent the filtration efficiency at the inlet portion of the “fluid before filtration” from decreasing.
  • the shape of the inner filter 212c forming the filter element 200c is not a hollow cylindrical shape with both ends penetrating, but the upper end is open and the lower end is closed. It has a hollow and inverted cone shape.
  • the filter element 200 c is a hollow/inverted cone in which the central axis of the outer element 11 is the same as that of the outer element 11 in the cylinder of the outer element 11.
  • the inner element 212c is arranged such that the top portion is arranged downward, and the length dimension in the radial direction decreases from the upper end portion to the lower end portion, and the radial length dimension of the upper end portion is equal to the outer element. It is smaller than the length dimension of 11 in the radial direction.
  • the lower end of the inner element 212c is the apex and does not have an open shape, so a configuration corresponding to the lower lids 213a and 213b is not provided.
  • the second modified example of the third embodiment is similar to the above-described third embodiment in comparison with the filter element 10 of the first embodiment (see FIG. 10A), “fluid before filtration”.
  • the cross-sectional area of the flow path of the "inlet portion of the filter element 200c" through which the air flows is large. Therefore, according to the third modified example of the third embodiment, the phenomenon that the flow velocity at the inlet portion becomes faster can be prevented, and the filtration efficiency at the inlet portion of the “fluid before filtration” can be prevented from decreasing.
  • a desired filtering performance can be obtained, and the backwash filter apparatus W can be downsized. 10, 100, 200a, 200b, 200c can be provided. Further, according to the present embodiment (first to third embodiments), it is possible to provide the backwashing type filtration device W which can obtain desired filtration performance and can be downsized.
  • the filter element 100 is composed of four layers of elements (first to fourth elements), but the number of filter elements may be more than four.
  • an inner element (inner filter element) 12 having a hollow cylindrical shape with both ends penetrating is used, and the opening at the lower end thereof is a circular plate-shaped lower lid 13.
  • the inner element 12 may have a hollow cylindrical shape with an open upper end and a closed lower end. That is, the lower end portion of the inner element 12 is previously provided with a lower end closing portion that closes the lower end.
  • the lower lid 13 is provided as in the first embodiment, or the island portion 7d that closes the lower end opening of the inner element 12 on the shelf 7 side as in the modification of the first embodiment. There is no need to provide.
  • the frame body around which the filter material such as the notch wire is wound includes a circular ring-shaped upper member, a circular plate-shaped lower member, and a rod-shaped wire disposed between the upper member and the lower member. It is preferable to use a member constituted by a supporting material (the frame body forming the inner element 12 has a structure in which its lower end is closed).
  • the fourth element 104 of the second embodiment may also be a hollow cylinder having an open upper end and a closed lower end.
  • a hollow cylindrical element having an open upper end and a closed lower end is used for the inner element 212a (FIG. 10(b), FIG. 11(a)) of the third embodiment.
  • the length dimension in the longitudinal direction of the side surface portion (portion formed by winding the filter medium) of the inner element 212a is the length of the side surface portion of the outer element 11 (portion formed by winding the filter medium) in the longitudinal direction.
  • the size is smaller than the size.
  • the lower member of the frame body around which the filter medium is wound is formed in an inverted cone shape or a disk shape.
  • W...Backwash type filtration device 1...Housing 1a...Main body (housing) 1a1... Bottom (housing) 1b... Lid body (housing) 4... Device inlet (housing) 5: Device outlet (housing) 7... Shelf plate 7a... Through holes 7b, 7b1, 7b2... Through hole 7c... Through holes 7d, 7e1, 7e2... Island portions 7r1, 7r2... Through hole 8... Rotating shaft 9... Motor 10... Filter element 11... Outer element 12... Inner element 13... Lower lid (filter element) 14... Top cover (filter element) 14a... Opening (filter element) 20... Backwash arm 20a... Base (backwash arm) 20b... Vertical pipe (backwash arm) 20c, 20d...
  • Filter element 101 First element (first filter element) 102...second element (second filter element) 103... Third element (third filter element) 104... Fourth element (fourth filter element) 113a... 1st lower lid (filter element) 113b...second lower lid (filter element) 114a... 1st upper lid (filter element) 114b...second upper lid (filter element) 200a... Filter element 212a... Inner element (filter element) 213a... Lower lid (filter element) 200b... Filter element 213b... Lower lid (filter element) 200c... Filter element 212c... Inner element (filter element)

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  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

A filter element 10 for a backwash filtering device has an outer element 11 formed in a hollow circular cylindrical shape and open at the opposite ends thereof, and has an inner element 12 formed in a hollow circular cylindrical shape and disposed within the outer element 11 so as to be coaxial with the center axis of the outer element 11. The radial length dimension of the outer element 11 is greater than the radial length dimension of the inner element 12. The upper end of the inner element 12 is open, and the lower end of the inner element 12 is closed and is formed as a lower end closed section 13. An annular upper cover 14 for closing the gap formed between the inner peripheral side surface of the upper end of the outer element 11 and the outer peripheral side surface of the upper end of the inner element 12 is provided on the upper end side of the filter element.

Description

逆洗型ろ過装置用のフィルタエレメント及び逆洗型ろ過装置Filter element for backwash filter and backwash filter
 本発明は、逆洗型ろ過装置用のフィルタエレメント及び逆洗型ろ過装置に関する。 The present invention relates to a filter element for a backwash type filtration device and a backwash type filtration device.
 従来から、コンテナ船等の船舶に搭載して用いられる逆洗型ろ過装置が知られている。この逆洗型ろ過装置は、複数のフィルタエレメントを収容した中空円筒状のハウジングを備え、フィルタエレメントにより、ハウジングの外部から流入するろ過前の流体のろ過を行いながら、順番にろ過された流体を用いてフィルタエレメントの洗浄を行うようになっている。 Background of the invention is a backwash type filtration device that is used by being mounted on ships such as container ships. This backwashing type filtration device includes a hollow cylindrical housing that houses a plurality of filter elements, and while filtering the fluid before filtration that flows from the outside of the housing with the filter element, the filtered fluid is filtered in order. The filter element is used for cleaning.
 具体的には、逆洗型ろ過装置は、複数のフィルタエレメント(筒状のフィルタエレメント)を収容したハウジングと、ハウジングの中心部に設置されている回転軸と、回転軸を回転させるモータと、回転軸の下端部に接続されている逆洗アーム(逆洗パイプ)とを備えている。 Specifically, the backwash type filtration device includes a housing that houses a plurality of filter elements (cylindrical filter elements), a rotating shaft that is installed in the center of the housing, and a motor that rotates the rotating shaft. And a backwash arm (backwash pipe) connected to the lower end of the rotating shaft.
 ここで、従来技術の逆洗型ろ過装置のハウジングの内部の構成について、図12を参照しながら説明する。
 図示するように、ハウジング(図示せず)の内部は、複数の貫通孔7bが形成されている棚板(仕切り板)7が設置され、この棚板7により、ハウジング内部が上下2つの空間(下側エリア(入口側エリア)A1、上側エリア(出口側エリア)A2)に仕切られている。また、ハウジングは、その下側エリアA1に、ろ過前の流体をハウジング内部に流入させるための入口管(図示せず)が接続され、上側エリアA2側に、ろ過された流体をハウジング内部から流出させるための出口管(図示せず)が接続されている。
Here, the internal configuration of the housing of the conventional backwashing type filtration device will be described with reference to FIG.
As shown in the figure, inside a housing (not shown), a shelf plate (partition plate) 7 in which a plurality of through holes 7b are formed is installed. It is divided into a lower area (entrance area) A1 and an upper area (exit area) A2). Further, the housing is connected to an inlet pipe (not shown) for allowing the fluid before filtration into the inside of the housing in the lower area A1, and the filtered fluid flows out from the inside of the housing to the upper area A2 side. An outlet pipe (not shown) for connecting is connected.
 また、上記の棚板7は、その上面の各貫通孔7bに、それぞれ、フィルタエレメント500の下端部が固定されている(ハウジング内部の上側エリアA2側に、複数のフィルタエレメント500が設置された状態になっている)。
 ハウジング内部の下側エリアA1には、逆洗アーム20が配置されており、回転軸(図示せず)の回転にともない回転して、棚板7に形成されている複数の貫通孔7bのいずれかに順番に当接して接続されることによりフィルタエレメント500の筒内と連通するようになっている。
Further, in the shelf plate 7, the lower end portion of the filter element 500 is fixed to each through hole 7b on the upper surface thereof (a plurality of filter elements 500 are installed on the upper area A2 side inside the housing). It is in a state).
In the lower area A1 inside the housing, the backwash arm 20 is arranged, and any of the plurality of through holes 7b formed in the shelf board 7 is rotated by the rotation of the rotation shaft (not shown). The crabs are brought into contact with each other in this order and connected to communicate with the inside of the filter element 500.
 また、図示する例では、フィルタエレメント500は、円筒状のろ枠(図示せず)に金網やノッチワイヤで構成されたろ材を巻き付けて中空円筒状に形成されたものを用いている。また、フィルタエレメント500は、一端部側(上端部側)が上蓋514で閉塞されており、他端部側(下端部側)が開口しており、棚板7の貫通孔7bに位置合わせされた状態で固定されている。具体的には、フィルタエレメント500は、その内周側面が、貫通孔7bの内周側面と面一になるように位置決めされ、その下端部が、棚板7の上面に固定されている。 Further, in the illustrated example, the filter element 500 is a hollow filter frame formed by winding a filter material composed of wire mesh or notch wire around a cylindrical filter frame (not shown). Further, the filter element 500 is closed at one end side (upper end side) with the upper lid 514 and is open at the other end side (lower end side), and is aligned with the through hole 7 b of the shelf board 7. It is fixed in the closed state. Specifically, the filter element 500 is positioned such that its inner peripheral side surface is flush with the inner peripheral side surface of the through hole 7b, and its lower end portion is fixed to the upper surface of the shelf board 7.
 上記の構成によれば、ハウジングの下側エリアA1に流入してきたろ過前の流体が下側エリアA1からフィルタエレメント500の筒内に入っていき、フィルタエレメント500の側面部を通過してろ過された後に、ハウジングの上側エリアA2に接続されている出口管(図示せず)から、ろ過された流体が排出される。図中では、逆洗アーム20が接続されていない左右両側に配置されたフィルタエレメント500が、ハウジングの下側エリアA1に流入してきたろ過前の流体をろ過している(図中の矢印が流体の流れ方向を示している)。 According to the above configuration, the unfiltered fluid that has flowed into the lower area A1 of the housing enters the cylinder of the filter element 500 from the lower area A1, passes through the side surface portion of the filter element 500, and is filtered. After that, the filtered fluid is discharged from an outlet pipe (not shown) connected to the upper area A2 of the housing. In the figure, the filter elements 500 arranged on both the left and right sides to which the backwash arm 20 is not connected filter the unfiltered fluid that has flowed into the lower area A1 of the housing (the arrow in the figure indicates the fluid). Shows the direction of flow).
 また、上記の構成により、逆洗アーム20が接続されたフィルタエレメント500が洗浄され、逆洗液がハウジングから排出される。図中では、逆洗アーム20が接続されている中央に配置されているフィルタエレメント500が、逆洗されている(図中の矢印が流体の流れ方向を示している)。 Also, with the above configuration, the filter element 500 to which the backwash arm 20 is connected is washed, and the backwash liquid is discharged from the housing. In the figure, the filter element 500 arranged in the center, to which the backwash arm 20 is connected, is backwashed (the arrow in the figure indicates the flow direction of the fluid).
 なお、上記のフィルタエレメント500を備えた逆洗型ろ過装置の構成は、例えば、特許文献1の図6等に開示されている。 Note that the configuration of the backwashing type filtration device including the above filter element 500 is disclosed in, for example, FIG. 6 of Patent Document 1.
特許5967816号公報Japanese Patent No. 5967816
 ところで、逆洗型ろ過装置が、所望量の流体のろ過する「ろ過性能」を確保するためには、ハウジングの内部に、多数のフィルタエレメントを収容し設置する必要がある(例えば、24本程度のフィルタエレメントを収容・設置する必要がある)。
 しかし、逆洗型ろ過装置において、多数のフィルタエレメントを収容する構成を採用すると、ろ過性能を確保できる一方で、逆洗型ろ過装置が大型化するという課題が生じる。これは、多数のフィルタエレメントを収容しようとすると、逆洗型ろ過装置のハウジングが大型化してしまうためである。すなわち、従来技術の逆洗型ろ過装置は、その構造上、装置自体が大型化してしまうという技術的課題を有している。特に、船舶の内部は、設置スペースが限られているため、逆洗型ろ過装置の小型化が強く求められている。
By the way, in order for the backwashing type filtration device to secure "filtration performance" for filtering a desired amount of fluid, it is necessary to accommodate and install a large number of filter elements inside the housing (for example, about 24 filters). It is necessary to accommodate and install the filter element of.
However, if the backwashing type filtration device adopts a configuration in which a large number of filter elements are accommodated, a problem arises in that while the filtration performance can be ensured, the backwashing type filtration device becomes large. This is because the housing of the backwash type filtration device becomes large in size when a large number of filter elements are to be accommodated. That is, the backwashing type filtration device of the related art has a technical problem that the device itself becomes large due to its structure. In particular, since the installation space is limited inside the ship, there is a strong demand for downsizing of the backwash type filtration device.
 本発明は、上記課題に鑑みてなされたものであり、その目的は、所望のろ過性能が得られると共に、逆洗型ろ過装置を小型化できる逆洗型ろ過装置用のフィルタエレメントを提供することにある。また、本発明の目的は、所望のろ過性能が得られると共に、小型化できる逆洗型ろ過装置を提供することにある。 The present invention has been made in view of the above problems, and an object thereof is to provide a filter element for a backwash filtration device that can obtain a desired filtration performance and can downsize the backwash filtration device. It is in. Another object of the present invention is to provide a backwashing type filtration device which can obtain desired filtration performance and can be downsized.
 上記課題を解決するためになされた本発明は、逆洗型ろ過装置に装着され該装置内を流れるろ過前の流体をろ過すると共に、ろ過された流体を利用して逆洗を行う逆洗型ろ過装置用のフィルタエレメントであって、両端が貫通している中空円筒状に形成された外側エレメントと、前記外側エレメントの筒内に、該外側エレメントと中心軸を同一にして配置された中空円筒状に形成された内側エレメントとを有し、前記外側エレメントの径方向の長さ寸法は、前記内側エレメントの径方向の長さ寸法よりも大きくなっており、前記内側エレメントは、上端が開口していると共に下端が閉塞された下端部閉塞部になっており、その上端部側には、前記外側エレメントの上端部の内周側面部と前記内側エレメントの上端部の外周側面部との間に形成れた隙間部を塞ぐ環状の上蓋が設けられていることを特徴とする。 The present invention made in order to solve the above-mentioned problems is a backwash type which is mounted on a backwash type filtration device to filter a fluid before filtration flowing in the device and to perform backwashing using the filtered fluid. A filter element for a filtering device, wherein an outer element formed in a hollow cylindrical shape having both ends penetrating, and a hollow cylinder arranged in the cylinder of the outer element with the same central axis as the outer element. The inner element formed in a shape of a circle, the radial length of the outer element is larger than the radial length of the inner element, and the inner element has an open upper end. And the lower end is a closed lower end portion, and on the upper end side thereof, between the inner peripheral side surface portion of the upper end portion of the outer element and the outer peripheral side surface portion of the upper end portion of the inner element. It is characterized in that an annular upper lid for closing the formed gap portion is provided.
 上記のように構成されたフィルタエレメントを、上述した図12に示す、逆洗型ろ過装置の棚板7の上面に取り付けると、ろ過処理及び逆洗処理の両方に対応できる。
 具体的には、上記フィルタエレメントを構成する外側エレメントの内周側面部が、棚板7の貫通孔7bの内周側面部と面一になるように位置決めし、当該フィルタエレメントの下端部を棚板7の上面に固定する。
 そして、上記のように逆洗型ろ過装置に取り付けられたフィルタエレメントは、貫通孔7bを介して逆洗アーム20が接続されていない状態の場合、図中に示す下側エリアA1に流入してきたろ過前の流体が貫通孔7bを介して、外側エレメントの下端部の内周測面部と、内側エレメントの下端部の外周側面部との間の隙間部から、外側エレメントの内周測面部と、内側エレメントの外周側面部との間の領域(第1領域)に流入する。また、第1領域に流入してきたろ過前の流体は、その一部が、外側エレメントの内周側面部から外周側面部を通過してろ過され、フィルタエレメントの外側の上側エリアA2に流出する。また、第1領域に流入してきたろ過前の流体は、その他部が、内側エレメントの外周側面部から内周側面部を通過してろ過され、内側エレメントの上端部の開口を通って、フィルタエレメントの外側の上側エリアA2に流出する。このように、本発明のフィルタエレメントは、外側エレメント及び内側エレメントの両方でろ過処理が行われる。
 一方、フィルタエレメントは、貫通孔7bを介して逆洗アーム20が接続された場合には、フィルタエレメントの下端部が逆洗アーム20により塞がれてろ過前の流体の流入が止まり、内側エレメントの上端部の開口から内側エレメントの筒内に、上側エリアA2のろ過された流体が流入する。また、筒内に流入してき流体が、内側エレメントの内周側面部から外周側面部を通過して前記第1領域(外側エレメントの内周測面部と、内側エレメントの外周側面部との間の領域)に流入して内側エレメントの逆洗処理が行われる。さらに、上側エリアA2のろ過された流体が外側エレメンの外周側面部から内周側面部を通過して前記第1領域に流入して外側エレメントの逆洗処理が行われる。なお、第1領域に流入してきた流体は、逆洗アームを介して排出されていくことになる。このように、フィルタエレメントは、外側エレメント及び内側エレメントの両者の逆洗処理が行える。
When the filter element configured as described above is attached to the upper surface of the shelf plate 7 of the backwashing type filtration device shown in FIG. 12 described above, both the filtering process and the backwashing process can be supported.
Specifically, the inner peripheral side surface portion of the outer element forming the filter element is positioned so as to be flush with the inner peripheral side surface portion of the through hole 7b of the shelf board 7, and the lower end portion of the filter element is racked. It is fixed on the upper surface of the plate 7.
Then, the filter element attached to the backwashing type filtration device as described above has flown into the lower area A1 shown in the figure when the backwashing arm 20 is not connected via the through hole 7b. The fluid before filtration passes through the through hole 7b, and from the gap between the inner peripheral surface measuring portion of the lower end of the outer element and the outer peripheral side surface portion of the lower end of the inner element to the inner peripheral surface measuring portion of the outer element, It flows into a region (first region) between the inner element and the outer peripheral side surface portion. In addition, a part of the unfiltered fluid that has flowed into the first region passes through the outer peripheral side surface portion from the inner peripheral side surface portion of the outer element, is filtered, and flows out to the upper area A2 outside the filter element. The other part of the fluid before filtration that has flowed into the first region is filtered by passing through the inner peripheral side surface portion from the outer peripheral side surface portion of the inner element, and through the opening of the upper end portion of the inner element, Flows out to the upper area A2 outside. Thus, the filter element of the present invention is filtered on both the outer and inner elements.
On the other hand, in the filter element, when the backwash arm 20 is connected through the through hole 7b, the lower end portion of the filter element is blocked by the backwash arm 20 and the inflow of fluid before filtration is stopped, and the inner element is stopped. The filtered fluid in the upper area A2 flows into the cylinder of the inner element through the opening at the upper end of the. Further, the fluid flowing into the cylinder passes from the inner peripheral side surface portion of the inner element to the outer peripheral side surface portion, and the first region (the region between the inner peripheral surface measuring portion of the outer element and the outer peripheral side surface portion of the inner element). ) And the inner element is backwashed. Further, the filtered fluid in the upper area A2 passes from the outer peripheral side surface portion of the outer element to the inner peripheral side surface portion, flows into the first region, and the outer element is backwashed. The fluid that has flowed into the first region is discharged through the backwash arm. In this way, the filter element can be backwashed with both the outer and inner elements.
 上述したように、本発明の逆洗型ろ過装置用のフィルタエレメントは、外側エレメント及び内側エレメントの両者でろ過処理ができるようになっており、上述した従来技術の逆洗型ろ過装置のフィルタエレメント500(図12参照)と比べて、ろ過処理面積が増加した構成になっている。すなわち、本発明のフィルタエレメントによれば、従来技術のフィルタエレメント500と比べて、フィルタエレメント・1本当たり「ろ過性能」が向上している。
 また、本発明のフィルタエレメントは、下端部閉塞部及び上蓋の構成により、外側エレメント及び内側エレメントの両者を同時に逆洗することができる。すなわち、本発明は、ろ過処理面積を増加させた構成でありながら、逆洗機能も維持されている。
 したがって、逆洗型ろ過装置に、本発明のフィルタエレメントを搭載すれば、従来技術のフィルタエレメントを搭載する場合と比べて、フィルタエレメントの本数を減少させることができる。そのため、逆洗型ろ過装置を構成するハウジングを小型化することができ、その結果、逆洗型ろ過装置W自体が小型化される。
As described above, the filter element for the backwash type filtration device of the present invention can be filtered by both the outer element and the inner element, and the filter element of the above-mentioned conventional backwash type filtration device. Compared with 500 (see FIG. 12), the filtration processing area is increased. That is, according to the filter element of the present invention, the “filtration performance” per filter element is improved as compared with the filter element 500 of the prior art.
Further, in the filter element of the present invention, both the outer element and the inner element can be backwashed simultaneously due to the configuration of the lower end blocking portion and the upper lid. That is, the present invention has a structure in which the filtration processing area is increased, while maintaining the backwash function.
Therefore, when the filter element of the present invention is mounted on the backwash type filtering device, the number of filter elements can be reduced as compared with the case of mounting the filter element of the prior art. Therefore, it is possible to reduce the size of the housing that constitutes the backwashing type filtration device, and as a result, reduce the size of the backwashing type filtration device W itself.
 また、前記内側エレメントは、側面部の長手方向の長さ寸法が、前記外側エレメントの側面部の長手方向の長さ寸法よりも小さい寸法に形成されており、前記内側エレメントは、その上端部の高さ方向の位置が、前記外側エレメントの上端部の高さ方向の位置に一致した状態になるように、前記上蓋に取り付けられ、その側面部の下端の位置が、前記外側エレメントの側面部の下端よりも上方側に配置され、前記下端部閉塞部が逆円錐形に形成されていることが望ましい。
 また、前記内側エレメントは、側面部の長手方向の長さ寸法が、前記外側エレメントの側面部の長手方向の長さ寸法よりも小さい寸法に形成されており、前記内側エレメントは、その上端部の高さ方向の位置が、前記外側エレメントの上端部の高さ方向の位置に一致した状態になるように、前記上蓋に取り付けられ、その側面部の下端の位置が、前記外側エレメントの側面部の下端よりも上方側に配置され、前記下端部閉塞部が略円板状に形成されていることが望ましい。
In addition, the inner element is formed such that the lengthwise dimension of the side surface portion is smaller than the lengthwise dimension of the side surface portion of the outer element, and the inner element is The position in the height direction is attached to the upper lid so that the position in the height direction of the upper end portion of the outer element coincides with the position of the lower end of the side surface portion of the side surface portion of the outer element. It is desirable that it is arranged above the lower end and that the lower end closing portion is formed in an inverted conical shape.
In addition, the inner element is formed such that the lengthwise dimension of the side surface portion is smaller than the lengthwise dimension of the side surface portion of the outer element, and the inner element is The position in the height direction is attached to the upper lid so that the position in the height direction of the upper end portion of the outer element coincides with the position of the lower end of the side surface portion of the side surface portion of the outer element. It is desirable that it is arranged above the lower end and that the lower end blocking portion is formed in a substantially disc shape.
 上記の構成を採用したのは以下の理由による。
 本発明のフィルタエレメントは、外側エレメントと、外側エレメントの筒内に該外側エレメントと中心軸を同一にして配置された内側エレメントとを有し、その下端部側に、内側エレメントの下端部を閉塞する下端部閉塞部が設けられている。
 そして、上述したように、逆洗型ろ過装置の棚板7(図12参照)にフィルタエレメントを取り付けた場合、外側エレメントの下端部の内周測面部と、内側エレメントの下端部の外周側面部との間の隙間部から、ろ過前の流体が、外側エレメントの内周測面部と、内側エレメントの外周側面部との間の領域(第1領域)に流入してくる。すなわち、従来技術の逆洗型ろ過装置の一重タイプのフィルタエレメント500(図12参照)と比べて、「ろ過前の流体」を流入させる「フィルタエレメントの入口部」の流路の断面積が小さくなっており、入口部分における流速が速くなり、ろ過効率が低下する虞が生じる。
 そこで、内側エレメントの側面部の長手方向の長さ寸法を、外側エレメントの側面部の長手方向の長さ寸法よりも小さくし、且つ内側エレメントの側面部の下端の位置が、外側エレメントの側面部の下端部よりも上方側に配置されるようにし、内側エレメントの下端部を閉塞している下端部閉塞部を「逆円錐形」或いは「円板状」に形成するようにした。
 この構成によれば、「ろ過前の流体」を流入させる「フィルタエレメントの入口部」の流路の断面積を大きく形成できるため、「フィルタエレメントの入口部」における流速が速くなる現象が防止され、「ろ過前の流体」の入口部分・近傍におけるろ過効率の低下することが防止される。
The reason for adopting the above configuration is as follows.
The filter element of the present invention has an outer element and an inner element arranged in the cylinder of the outer element with the same central axis as the outer element, and the lower end of the inner element closes the lower end of the inner element. A lower end blocking portion is provided.
Then, as described above, when the filter element is attached to the shelf plate 7 (see FIG. 12) of the backwash type filtering device, the inner peripheral surface measuring portion of the lower end portion of the outer element and the outer peripheral side surface portion of the lower end portion of the inner element. The fluid before filtration flows into the area (first area) between the inner peripheral surface-measuring portion of the outer element and the outer peripheral side surface portion of the inner element from the gap between the inner element and the inner peripheral surface. That is, as compared with the single-type filter element 500 (see FIG. 12) of the conventional backwash filter, the cross-sectional area of the flow path of the “inlet of the filter element” into which the “fluid before filtration” flows is smaller. Therefore, the flow velocity at the inlet portion becomes high, and the filtration efficiency may decrease.
Therefore, the length dimension of the side surface of the inner element in the longitudinal direction is made smaller than the length dimension of the side surface of the outer element in the longitudinal direction, and the position of the lower end of the side surface of the inner element is set to the side surface of the outer element. It is arranged above the lower end of the inner element, and the lower end closing portion that closes the lower end of the inner element is formed in an "inverse cone shape" or a "disc shape".
According to this configuration, since the cross-sectional area of the flow path of the "inlet of the filter element" into which the "fluid before filtration" flows can be formed large, the phenomenon that the flow velocity at the "inlet of the filter element" becomes fast is prevented. , It is possible to prevent the filtration efficiency from decreasing in the vicinity of the inlet portion of the “fluid before filtration”.
 また、本発明は、複数のフィルタエレメントを収容した中空筒状のハウジングを備え、該フィルタエレメントにより外部から流入するろ過前の流体のろ過を行いながら、ろ過された流体を用いて順番に該フィルタエレメントの洗浄を行う逆洗型ろ過装置であって、前記ハウジング内部を上側エリアと下側エリアの2つのエリアに仕切る棚板と、前記ハウジングの下側に形成されて且つろ過前の流体を前記下側エリアに流入させる装置入口と、前記ハウジングの上方側に形成され且つ前記上側エリアからろ過された流体を排出させる装置出口と、前記ハウジングの中心部に配置され且つ回転自在に形成された回転軸と、前記下側エリアに配置され且つ前記回転軸に接続されて該回転軸の回転に伴い動作する逆洗アームとを有し、前記棚板には複数の貫通孔が形成され、前記フィルタエレメントは、両端が貫通している中空円筒状に形成された外側エレメントと、前記外側エレメントの筒内に、該外側エレメントと中心軸を同一にして配置された中空円筒状に形成された内側エレメントと、前記外側エレメントの上端部の内周側面部と前記内側エレメントの上端部の外周側面部との間に形成れた隙間部を塞ぐ環状に形成された上端部閉塞部とを有し、前記外側エレメントの径方向の長さ寸法は、前記内側エレメントの径方向の長さ寸法よりも大きくなっており、前記内側エレメントは、上端が開口していると共に下端が閉塞された下端部閉塞部になっており、さらに、前記フィルタエレメントは、前記外側エレメントの内周側面部が、前記棚板の貫通孔の内周側面部と面一になるように位置決めされ、その下端部が該棚板の上面に固定され、前記逆洗アームは、その一端部が前記棚板の下端面に当接しながら移動し、前記複数の貫通孔のいずれかに接続され、該接続した貫通孔の位置に固定されている前記フィルタエレメントの筒内と連通するようになっていることを特徴とする。 Further, the present invention includes a hollow cylindrical housing that houses a plurality of filter elements, and while filtering the fluid before filtration that flows from the outside by the filter element, the filtered fluid is sequentially used by using the filtered fluid. A backwashing type filtration device for washing an element, comprising: a shelf plate that partitions the inside of the housing into two areas, an upper area and a lower area; and a fluid that is formed on the lower side of the housing and is not filtered yet. A device inlet for flowing into the lower area, a device outlet formed on the upper side of the housing and for discharging the filtered fluid from the upper area, and a rotation rotatably arranged in the center of the housing. A shaft and a backwash arm that is disposed in the lower area and is connected to the rotary shaft and that operates with the rotation of the rotary shaft. The element includes an outer element formed in a hollow cylindrical shape having both ends penetrating, and an inner element formed in a hollow cylindrical shape having the same central axis as the outer element in the cylinder of the outer element. And an upper end closing portion formed in an annular shape that closes a gap formed between the inner peripheral side surface portion of the upper end portion of the outer element and the outer peripheral side surface portion of the upper end portion of the inner element, The radial length of the outer element is larger than the radial length of the inner element, and the inner element has a lower end closed portion in which the upper end is open and the lower end is closed. Further, in the filter element, the inner peripheral side surface portion of the outer element is positioned so as to be flush with the inner peripheral side surface portion of the through hole of the shelf board, and the lower end portion of the filter element is formed of the shelf board. The backwash arm is fixed to the upper surface, one end of the backwash arm moves while abutting against the lower end surface of the shelf plate, and the backwash arm is connected to any of the plurality of through holes and is fixed at the position of the connected through hole. The filter element communicates with the inside of the cylinder.
 また、前記フィルタエレメントは、前記貫通孔を介して逆洗アームが接続されていない状態の場合には、前記装置入口から流入したろ過前の流体が前記貫通孔を介して、前記外側エレメントの下端部の内周測面部と、前記内側エレメントの下端部の外周側面部との間の隙間部から、該外側エレメントの内周測面部と、該内側エレメントの外周側面部との間の第1領域に流入し、前記第1領域に流入してきたろ過前の流体は、その一部が、前記外側エレメントの内周側面部から外周側面部を通過してろ過され、前記フィルタエレメントの外側の前記上側エリアに流出し、前記第1領域に流入してきたろ過前の流体は、その他部が、前記内側エレメントの外周側面部から内周側面部を通過してろ過され、前記内側エレメントの上端部の開口を通って、前記フィルタエレメントの外側の前記上側エリアに流出するようになっている。
 また、前記フィルタエレメントは、前記貫通孔を介して逆洗アームが接続された場合には、前記フィルタエレメントの下端部が該逆洗アームにより塞がれてろ過前の流体の流入が止まり、前記内側エレメントの上端部の開口から該内側エレメントの筒内に、前記上側エリアのろ過された流体が流入し、前記筒内に流入してき流体が、該内側エレメントの内周側面部から外周側面部を通過して前記第1領域に流入して該内側エレメントの逆洗処理が行われ、さらに、前記上側エリアのろ過された流体が前記外側エレメンの外周側面部から内周側面部を通過して前記第1領域に流入して該外側エレメントの逆洗処理が行われ、前記第1領域に流入してきた流体が前記逆洗アームを介して排出されていくようになっている。
Further, in the filter element, when the backwash arm is not connected through the through hole, the fluid before filtration flowing from the inlet of the apparatus passes through the through hole and the lower end of the outer element. Region between the inner peripheral surface of the inner element and the outer peripheral side surface of the inner element, and a first region between the inner peripheral surface of the outer element and the outer peripheral side surface of the inner element. Part of the fluid before filtration that has flowed into the first region and has passed through the outer peripheral side surface portion from the inner peripheral side surface portion of the outer element, and is filtered to the upper side outside the filter element. The other part of the unfiltered fluid that has flowed out into the area and has flowed into the first region is filtered by passing through the inner peripheral side surface portion from the outer peripheral side surface portion of the inner element, and opening at the upper end portion of the inner element. Through to the upper area outside the filter element.
Further, in the filter element, when a backwash arm is connected through the through hole, a lower end portion of the filter element is closed by the backwash arm to stop inflow of fluid before filtration, and The filtered fluid in the upper area flows into the cylinder of the inner element from the opening of the upper end of the inner element, and the fluid flowing into the cylinder flows from the inner peripheral side surface portion to the outer peripheral side surface portion of the inner element. After passing through and flowing into the first region, the back washing process of the inner element is performed, and further, the filtered fluid in the upper area passes from the outer peripheral side surface portion of the outer element to the inner peripheral side surface portion, and The outer element is backwashed by flowing into the first area, and the fluid flowing into the first area is discharged through the backwash arm.
 このように、本発明の逆洗型ろ過装置では、外側エレメント及び内側エレメントの両者でろ過処理ができるフィルタエレメントを備えており、上述した従来技術の逆洗型ろ過装置のフィルタエレメント500(図12参照)と比べて、フィルタエレメント・1本当たりのろ過処理面積が増加した構成になっている。すなわち、本発明の逆洗型ろ過装置のフィルタエレメンは、従来技術のフィルタエレメント500と比べて、フィルタエレメント・1本当たり「ろ過性能」が向上している。
 また、本発明の逆洗型ろ過装置は、収容されているフィルタエレメントを構成する外側エレメント及び内側エレメントの両者を同時に逆洗することができるようになっている。すなわち、本発明は、フィルタエレメントのろ過処理面積を増加させた構成でありながら、逆洗機能も維持されている。
 したがって、本発明の構成によれば、従来技術の逆洗型ろ過装置に比べて、フィルタエレメントの本数を減少させることができる。その結果、逆洗型ろ過装置を構成するハウジングを小型化させることができ、逆洗型ろ過装置W自体を小型化することが可能になる。
As described above, the backwash filter of the present invention is provided with the filter element capable of performing the filtering process with both the outer element and the inner element, and the filter element 500 (see FIG. 12) of the above-described backwash filter of the related art. Compared to (see), the filter processing area per filter element is increased. That is, in the filter element of the backwashing type filtration device of the present invention, the “filtration performance” per filter element is improved as compared with the filter element 500 of the prior art.
Further, the backwashing type filtration device of the present invention is capable of simultaneously backwashing both the outer element and the inner element constituting the housed filter element. That is, the present invention has a structure in which the filtration processing area of the filter element is increased, while maintaining the backwash function.
Therefore, according to the configuration of the present invention, the number of filter elements can be reduced as compared with the backwashing type filtration device of the related art. As a result, it is possible to reduce the size of the housing that constitutes the backwash type filtration device, and to reduce the size of the backwash type filtration device W itself.
 また、本発明は、複数のフィルタエレメントを収容した中空筒状のハウジングを備え、該フィルタエレメントにより外部から流入するろ過前の流体のろ過を行いながら、ろ過された流体を用いて順番に該フィルタエレメントの洗浄を行う逆洗型ろ過装置であって、前記ハウジング内部を上側エリアと下側エリアの2つのエリアに仕切る棚板と、前記ハウジングの下方側に形成されて且つろ過前の流体を前記下側エリアに流入させる装置入口と、前記ハウジングの上方側に形成され且つ前記上側エリアからろ過された流体を排出させる装置出口と、前記ハウジングの中心部に配置され且つ回転自在に形成された回転軸と、前記下側エリアに配置され且つ前記回転軸に接続されて該回転軸の回転に伴い動作する逆洗アームとを有し、前記棚板には複数の貫通孔が形成され、前記フィルタエレメントは、両端が貫通している中空円筒状に形成された外側エレメントと、前記外側エレメントの筒内に、該外側エレメントと中心軸を同一にして配置された中空・逆円錐形状の内側エレメントと、前記外側エレメントの上端部の内周側面部と前記内側エレメントの上端部の外周側面部との間に形成れた隙間部を塞ぐ環状に形成された上端部閉塞部とを有し、前記内側エレメントは、頂部が下方に配置されており且つ上端部が開口しており、上端部から下端部に向けて径方向の長さ寸法が小さくなっているとともに、該上端部の径方向の長さ寸法が、前記外側エレメントの径方向の長さ寸法より小さくなっており、さらに、前記フィルタエレメントは、前記外側エレメントの内周側面部が、前記棚板の貫通孔の内周側面部と面一になるように位置決めされ、その下端部が該棚板の上面に固定され、前記逆洗アームは、その一端部が前記棚板の下端面に当接しながら移動し、前記複数の貫通孔のいずれかに接続され、該接続した貫通孔の位置に固定されている前記フィルタエレメントの筒内と連通するようになっていることを特徴とする。 Further, the present invention includes a hollow cylindrical housing that houses a plurality of filter elements, and while filtering the fluid before filtration that flows from the outside by the filter element, the filtered fluid is sequentially used by using the filtered fluid. A backwashing type filtration device for washing an element, comprising: a shelf plate partitioning the inside of the housing into two areas, an upper area and a lower area; and a fluid that is formed on the lower side of the housing and is not filtered. A device inlet for flowing into the lower area, a device outlet formed on the upper side of the housing and for discharging the filtered fluid from the upper area, and a rotation rotatably arranged in the center of the housing. A shaft and a backwash arm that is disposed in the lower area and is connected to the rotary shaft and that operates with the rotation of the rotary shaft. The element includes an outer element formed in a hollow cylindrical shape having both ends penetrating, and a hollow/inverse conical inner element arranged in the cylinder of the outer element with the same central axis as the outer element. The inner side surface portion of the upper end portion of the outer element and the outer peripheral side surface portion of the upper end portion of the inner element, the upper end portion closing portion formed in an annular shape to close the gap portion, the inner side The element has a top portion arranged downward and an upper end portion opened, and the length dimension in the radial direction decreases from the upper end portion to the lower end portion, and the radial length of the upper end portion The dimension is smaller than the radial length of the outer element, and further, in the filter element, the inner peripheral side surface portion of the outer element is flush with the inner peripheral side surface portion of the through hole of the shelf board. Is positioned so that the lower end portion is fixed to the upper surface of the shelf board, and the backwash arm moves while one end portion of the backwash arm contacts the lower end surface of the shelf board. It is characterized in that it is connected to the inside of the filter element and communicates with the inside of the cylinder of the filter element fixed at the position of the connected through hole.
 また、本発明は、複数のフィルタエレメントを収容した中空筒状のハウジングを備え、該フィルタエレメントにより外部から流入するろ過前の流体のろ過を行いながら、ろ過された流体を用いて順番に該フィルタエレメントの洗浄を行う逆洗型ろ過装置であって、前記ハウジング内部を上側エリアと下側エリアの2つのエリアに仕切る棚板と、前記ハウジングの下方側に形成されて且つろ過前の流体を前記下側エリアに流入させる装置入口と、前記ハウジングの上方側に形成され且つ前記上側エリアからろ過された流体を排出させる装置出口と、前記ハウジングの中心部に配置され且つ回転自在に形成された回転軸と、前記下側エリアに配置され且つ前記回転軸に接続されて該回転軸の回転に伴い動作する逆洗アームとを有し、前記棚板には複数の貫通孔が形成され、前記フィルタエレメントは、両端が貫通している中空円筒状に形成された第1エレメントと、前記第1エレメントの筒内に、該第1エレメントと中心軸を同一にして配置され且つ両端が貫通している中空円筒状に形成された第2エレメントと、前記第2エレメントの筒内に、該第2エレメントと中心軸を同一にして配置され且つ両端が貫通している中空円筒状に形成された第3エレメントと、前記第3エレメントの筒内に、該第3エレメントと中心軸を同一にして配置され且つ中空円筒状に形成された第4エレメントと、前記第2エレメントの下端部の内周側面部と前記第3エレメントの下端部の外周側面部との間に形成れた隙間部を塞ぐ環状の第1下端部閉塞部と、前記第1エレメントの上端部の内周側面部と、前記第2エレメントの上端部の外周側面部との間に形成れた隙間部を塞ぐ環状の第1上端部閉塞部と、前記第3エレメントの上端部の内周側面部と、前記第4エレメントの上端の外周側面部との間に形成れた隙間部を塞ぐ環状の第2上端部閉塞部とを有し、前記第4エレメントは、上端が開口していると共に下端が閉塞されており、前記第1エレメントの径方向の長さ寸法は、前記第2エレメントの径方向の長さ寸法よりも大きくなっており、前記第2エレメントの径方向の長さ寸法は、前記第3エレメントの径方向の長さ寸法よりも大きくなっており、前記第3エレメントの径方向の長さ寸法は、前記第4エレメントの径方向の長さ寸法よりも大きくなっており、前記フィルタエレメントは、前記第1エレメントの内周側面部が、前記棚板の貫通孔の内周側面部と面一になるように位置決めされ、その下端部が該棚板の上面に固定され、前記逆洗アームは、その一端部が前記棚板の下端面に当接しながら移動し、前記複数の貫通孔のいずれかに接続され、該接続した貫通孔の位置に固定されている前記フィルタエレメントの筒内と連通するようになっていることを特徴とする。 Further, the present invention includes a hollow cylindrical housing that houses a plurality of filter elements, and while filtering the fluid before filtration that flows from the outside by the filter element, the filtered fluid is sequentially used by using the filtered fluid. A backwashing type filtration device for washing an element, comprising: a shelf plate partitioning the inside of the housing into two areas, an upper area and a lower area; and a fluid that is formed on the lower side of the housing and is not filtered. A device inlet for flowing into the lower area, a device outlet formed on the upper side of the housing and for discharging the filtered fluid from the upper area, and a rotation rotatably arranged in the center of the housing. A shaft and a backwash arm that is disposed in the lower area and is connected to the rotary shaft and that operates with the rotation of the rotary shaft. The element has a hollow-cylindrical first element having both ends penetrating, and the element is arranged in the cylinder of the first element with the central axis being the same as that of the first element and having both ends penetrating therethrough. A second element formed in the shape of a hollow cylinder, and a third cylindrical element formed in the cylinder of the second element and having the same central axis as the second element and having both ends penetrating therethrough. An element, a fourth element arranged in the cylinder of the third element with the same central axis as the third element, and formed into a hollow cylindrical shape; and an inner peripheral side surface portion of the lower end of the second element. An annular first lower end portion closing portion that closes a gap formed between the lower end portion and the outer peripheral side surface portion of the third element, an inner peripheral side surface portion of the upper end portion of the first element, and the second An annular first upper end blocking portion that closes a gap formed between the upper end portion of the element and the outer peripheral side surface portion, an inner peripheral side surface portion of the upper end portion of the third element, and an upper end portion of the fourth element An annular second upper end closing portion that closes a gap formed between the outer peripheral side surface portion and the outer peripheral side surface portion, and the fourth element has an upper end opened and a lower end closed; The radial length of the element is larger than the radial length of the second element, and the radial length of the second element is the radial length of the third element. And the radial length of the third element is larger than the radial length of the fourth element, and the filter element is the same as the first element. The inner peripheral side surface is the shelf plate Is positioned so as to be flush with the inner peripheral side surface portion of the through hole, and the lower end portion thereof is fixed to the upper surface of the shelf plate, and one end of the backwash arm abuts on the lower end surface of the shelf plate. While moving while being connected to any of the plurality of through holes, the inside of the cylinder of the filter element fixed at the position of the connected through hole is communicated.
 このように本発明によれば、所望のろ過性能が得られると共に、逆洗型ろ過装置を小型化できる逆洗型ろ過装置用のフィルタエレメントを提供することができる。また、本発明によれば、所望のろ過性能が得られると共に、小型化できる逆洗型ろ過装置を提供することができる。 As described above, according to the present invention, it is possible to provide a filter element for a backwash type filtration device, which can obtain a desired filtration performance and can downsize the backwash type filtration device. Further, according to the present invention, it is possible to provide a backwashing type filtration device which can obtain a desired filtration performance and can be downsized.
本発明の第1実施形態の逆洗型ろ過装置の全体構成を示した模式図である。It is the schematic diagram which showed the whole structure of the backwashing type filtration apparatus of 1st Embodiment of this invention. 本発明の第1実施形態の逆洗型ろ過装置用のフィルタエレメントを説明するための模式図であり、(a)がフィルタエレメントの縦方向の断面を示した模式図であり、(b)がフィルタエレメントの下端に設けられる下蓋を示した模式図であり、(c)がフィルタエレメントの上端に設けられる上蓋を示した模式図である。It is a schematic diagram for demonstrating the filter element for backwashing type filters of 1st Embodiment of this invention, (a) is a schematic diagram which showed the cross section of the longitudinal direction of a filter element, (b) is a schematic diagram. It is a schematic diagram which showed the lower cover provided in the lower end of a filter element, and (c) is a schematic diagram which showed the upper cover provided in the upper end of a filter element. 本発明の第1実施形態の逆洗型ろ過装置の棚板に設けられるフィルタエレメント用の貫通孔を説明するための模式図である。It is a schematic diagram for demonstrating the through-hole for filter elements provided in the shelf board of the backwashing type filtration apparatus of 1st Embodiment of this invention. 本発明の第1実施形態の逆洗型ろ過装置のろ過処理工程及び逆洗処理工程を説明するための模式図である。It is a schematic diagram for demonstrating the filtration process process and the backwash process process of the backwash type filtration apparatus of 1st Embodiment of this invention. 本発明の第1実施形態の逆洗型ろ過装置の変形例を示した模式図である。It is a schematic diagram which showed the modification of the backwashing type filtration apparatus of 1st Embodiment of this invention. 本発明の第2実施形態の逆洗型ろ過装置用のフィルタエレメントを説明するための模式図であり、(a)がフィルタエレメントの縦方向の断面を示した模式図であり、(b)がフィルタエレメントの下端に設けられる下蓋を示した模式図であり、(c)がフィルタエレメントの上端に設けれる上蓋を示した模式図である。It is a schematic diagram for demonstrating the filter element for backwashing type filters of 2nd Embodiment of this invention, (a) is the schematic diagram which showed the cross section of the longitudinal direction of a filter element, (b) is a schematic diagram. It is a schematic diagram which showed the lower lid provided in the lower end of a filter element, and (c) is a schematic diagram which showed the upper lid provided in the upper end of a filter element. 本発明の第2実施形態の逆洗型ろ過装置のろ過処理工程を説明するための模式図である。It is a schematic diagram for demonstrating the filtration process process of the backwashing type filtration apparatus of 2nd Embodiment of this invention. 本発明の第2実施形態の逆洗型ろ過装置の変形例を示した模式図である。It is the schematic diagram which showed the modification of the backwashing type filtration apparatus of 2nd Embodiment of this invention. 本発明の第2実施形態の逆洗型ろ過装置の変形例の棚板に設けられるフィルタエレメント用の貫通孔を説明するための模式図である。It is a schematic diagram for demonstrating the through-hole for filter elements provided in the shelf plate of the modification of the backwashing type filtration apparatus of 2nd Embodiment of this invention. 本発明の第3実施形態の逆洗型ろ過装置を説明するための模式図であり、(a)が第3実施形態と対比させるために示した第1実施形態のフィルタエレメントの模式図であり、(b)が第3実施形態の逆洗型ろ過装置のフィルタエレメントを示した模式図である。It is a schematic diagram for demonstrating the backwashing type filtration apparatus of 3rd Embodiment of this invention, (a) is a schematic diagram of the filter element of 1st Embodiment shown in order to compare with 3rd Embodiment. , (B) is a schematic diagram showing a filter element of the backwashing type filtration device of the third embodiment. 本発明の第3実施形態の逆洗型ろ過装置の変形例を示した模式図であり、(a)が第3実施形態の逆洗型ろ過装置の第1変形例を示した模式図であり、(b)が第3実施形態の逆洗型ろ過装置の第2変形例を示した模式図である。It is the schematic diagram which showed the modification of the backwashing type filtration apparatus of 3rd Embodiment of this invention, (a) is the schematic diagram which showed the 1st modification of the backwashing type filtration apparatus of 3rd Embodiment. , (B) is the schematic diagram which showed the 2nd modification of the backwashing type filtration apparatus of 3rd Embodiment. 従来技術の逆洗型ろ過装置のハウジングの内部の構成を示した模式図である。It is the schematic diagram which showed the internal structure of the housing of the backwash type filtration apparatus of a prior art.
 以下、本発明の実施形態(第1~3実施形態)の逆洗型ろ過装置を図面に基づいて説明する。 Hereinafter, a backwash type filtration device according to an embodiment (first to third embodiments) of the present invention will be described with reference to the drawings.
《第1実施形態》
 先ず、本発明の第1実施形態の逆洗型ろ過装置の構成について、図1~3を参照しながら説明する。
 ここで、図1は、第1実施形態の逆洗型ろ過装置の全体構成を示した模式図である。また、図2は、第1実施形態の逆洗型ろ過装置用のフィルタエレメントを説明するための模式図であり、(a)がフィルタエレメントの縦方向の断面を示した模式図であり、(b)がフィルタエレメントの下端に設けられる下蓋を示した模式図であり、(c)がフィルタエレメントの上端に設けられる上蓋を示した模式図である。図3は、第1実施形態の逆洗型ろ過装置の棚板に設けられるフィルタエレメント用の貫通孔を説明するための模式図である。
<<First Embodiment>>
First, the configuration of the backwashing type filtration device according to the first embodiment of the present invention will be described with reference to FIGS.
Here, FIG. 1 is a schematic view showing the overall configuration of the backwashing type filtration device of the first embodiment. Further, FIG. 2 is a schematic diagram for explaining the filter element for the backwashing type filtration device of the first embodiment, wherein (a) is a schematic diagram showing a vertical cross section of the filter element, FIG. 6B is a schematic diagram showing a lower lid provided at the lower end of the filter element, and FIG. 9C is a schematic diagram showing an upper lid provided at the upper end of the filter element. FIG. 3 is a schematic diagram for explaining a through hole for a filter element provided on the shelf plate of the backwashing type filtration device of the first embodiment.
 図1に示すように、第1実施形態の逆洗型ろ過装置Wは、複数のフィルタエレメント10を収容した中空円筒状のハウジング1を備え、このハウジング1の外部から流入する「ろ過前の流体(ろ過前の元液)」のろ過を行いながら、順番に、ろ過された流体(ろ過処理液)を用いてフィルタエレメント10の洗浄(逆洗処理)を行うようになっている。
 尚、第1実施形態は、フィルタエレメント10の構成に特徴がある。そのため、以下では、フィルタエレメント10の構成を詳細に説明し、それ以外の構成の説明を簡略化する。
As shown in FIG. 1, the backwashing filtration apparatus W of the first embodiment includes a hollow cylindrical housing 1 that houses a plurality of filter elements 10, and a “fluid before filtration” that flows in from the outside of the housing 1. While filtering "(original liquid before filtration)", the filter element 10 is sequentially cleaned (backwashing process) using the filtered fluid (filtration process liquid).
The first embodiment is characterized by the configuration of the filter element 10. Therefore, the configuration of the filter element 10 will be described in detail below, and the description of the other configurations will be simplified.
 上記のハウジング1は、上端が開放され且つ底部1a1を有する中空円筒状の本体部1aと、本体部1aの上端を塞ぐドーム状の蓋体部1bとを備えている。また、ハウジング1は、内部に棚板7が設置され、この棚板7により、ハウジング1内部が入口側エリア(下側エリア)A1と、出口側エリア(上側エリア)A2とに仕切られている。また、本体部1aは、その下端側の側面部に、下側エリアA1に流体を流入させるための装置入口4が形成されている。また、本体部1aは、その上端側の側面部に、上側エリアA2からろ過した流体を排出させるための装置出口5が形成されている。 The above-mentioned housing 1 is provided with a hollow cylindrical main body 1a having an open top and a bottom 1a1, and a dome-shaped lid 1b closing the top of the main body 1a. In addition, a shelf 7 is installed inside the housing 1, and the inside of the housing 1 is partitioned by the shelf 7 into an inlet side area (lower area) A1 and an outlet side area (upper area) A2. .. Further, the main body portion 1a is formed with a device inlet 4 at a lower end side surface portion thereof for allowing a fluid to flow into the lower area A1. Further, the main body portion 1a is formed with a device outlet 5 for discharging the fluid filtered from the upper area A2 on the side surface portion on the upper end side thereof.
 また、棚板7は、略円板状に形成され、その中心部に、回転軸8が回転自在に挿入される回転軸用の貫通孔7aが形成されている。また、棚板7には、貫通孔7aを中心にした同心円上に、複数のフィルタエレメント用の貫通孔7b(7b1、7b2)が形成されている。図示する例では、半径の異なる2つの同心円(内側円、外側円)に、それぞれ、貫通孔7b(7b1、7b2)が形成されている。
 上記の貫通孔7b(7b1、7b2)は、図3に示すように、平面視で円形に形成されている。尚、図3では、説明を簡略化するために、棚板7の中心部の貫通孔7aと、外側に配置されている貫通孔7b1を省略している。また、貫通7aは、貫通孔7bと同様で、平面視で円形に形成されている。
Further, the shelf plate 7 is formed in a substantially disc shape, and a through-hole 7a for the rotary shaft into which the rotary shaft 8 is rotatably inserted is formed in the center thereof. Further, on the shelf board 7, through holes 7b (7b1, 7b2) for a plurality of filter elements are formed on a concentric circle centered on the through hole 7a. In the illustrated example, through holes 7b (7b1, 7b2) are formed in two concentric circles (inner circle, outer circle) having different radii.
The through hole 7b (7b1, 7b2) is formed in a circular shape in plan view, as shown in FIG. In FIG. 3, the through hole 7a at the center of the shelf 7 and the through hole 7b1 arranged on the outer side are omitted to simplify the description. The through hole 7a is similar to the through hole 7b and is formed in a circular shape in plan view.
 そして、各貫通孔7b(7b1、7b2)には、フィルタエレメント10の下端部が気密に固定され、これにより、複数のフィルタエレメント10が棚板7に支持・固定されるようになっている。
 また、この構成により、ハウジング1の下側エリアA1がフィルタエレメント10の筒内と連通する。そして、ハウジング1内部に流入した流体は、フィルタエレメント10の筒内を通過しないと、下側エリアA1(又は上側エリアA2)から上側エリアA2(又は下側エリアA1)に移動できないようになっている。
The lower end of the filter element 10 is airtightly fixed to each through hole 7b (7b1, 7b2), so that the plurality of filter elements 10 are supported and fixed to the shelf plate 7.
Also, with this configuration, the lower area A1 of the housing 1 communicates with the inside of the cylinder of the filter element 10. The fluid flowing into the housing 1 cannot move from the lower area A1 (or the upper area A2) to the upper area A2 (or the lower area A1) without passing through the inside of the cylinder of the filter element 10. There is.
 また、ハウジング1の中心には、蓋体部1bの頂上部から棚板7に向けて延びる回転軸8が設けられている。この回転軸8は、その一端部(上端部)が、蓋体1の上端部に装着されたモータ9の回転軸(図示せず)に接続され、モータ9の駆動により回転するようになっている。また、回転軸8は、その他端部(下端部)側が棚板7の中心部の貫通孔7aを挿通し、下側エリアA1まで突出している。尚、モータ9は、図示しない制御回路により制御されて駆動するようになっている。 Further, at the center of the housing 1, a rotary shaft 8 extending from the top of the lid 1b toward the shelf 7 is provided. One end (upper end) of the rotating shaft 8 is connected to a rotating shaft (not shown) of a motor 9 mounted on the upper end of the lid 1, and is rotated by driving the motor 9. There is. The other end (lower end) side of the rotary shaft 8 is inserted into the through hole 7a at the center of the shelf 7 and projects to the lower area A1. The motor 9 is driven by being controlled by a control circuit (not shown).
 また、ハウジング1の下側エリアA1まで延設された回転軸8の下端部には、逆洗アーム(逆洗パイプ)20が接続されている。この逆洗アーム20は、回転軸8の下端部に固定された基部20aと一体に形成され、その上端面が棚板7の下面を水密にシールしながら回転軸8と共に回動するようになっている。 A backwash arm (backwash pipe) 20 is connected to the lower end of the rotating shaft 8 extending to the lower area A1 of the housing 1. The backwash arm 20 is integrally formed with a base portion 20a fixed to a lower end portion of the rotary shaft 8, and an upper end surface thereof rotates together with the rotary shaft 8 while sealing a lower surface of the shelf plate 7 in a watertight manner. ing.
 具体的には、逆洗アーム20は、基部20aと、基部20aに接続された垂直管20bと、垂直管20bの側面部に接続された2つのL字管20c、20dとを備えている。この垂直管20bは、上端部が基部20aにより密封され、下端部が逆洗液排出口管40に連通している排出管30に回動自在に接続されている。
 また、L字管20cは、一端部が垂直管20bの側面部と接続して垂直管20bと連通しており、他端部に形成された上端面が棚板7の下面に当接している。尚、L字管20cは、上端面が、棚板7の上に形成されている複数の貫通孔7b1に沿って回動するように長さ寸法が設計されている。
 また、L字管20dは、一端部が垂直管20bの側面部と接続して垂直管20bと連通しており、他端部に形成された上端面が棚板7の下面に当接している。尚、L字管20dは、上端面が、棚板7に形成された複数の貫通孔7b2に沿って回動するように長さ寸法が設計されている。
Specifically, the backwash arm 20 includes a base portion 20a, a vertical pipe 20b connected to the base portion 20a, and two L-shaped pipes 20c and 20d connected to a side surface portion of the vertical pipe 20b. The vertical pipe 20b is rotatably connected to a discharge pipe 30 having an upper end sealed by a base 20a and a lower end communicating with the backwash liquid discharge pipe 40.
Further, one end of the L-shaped tube 20c is connected to the side surface of the vertical tube 20b and communicates with the vertical tube 20b, and the upper end surface formed at the other end is in contact with the lower surface of the shelf board 7. .. The length of the L-shaped tube 20c is designed so that the upper end surface thereof rotates along a plurality of through holes 7b1 formed on the shelf plate 7.
Further, one end of the L-shaped pipe 20d is connected to the side face of the vertical pipe 20b and communicates with the vertical pipe 20b, and the upper end face formed at the other end is in contact with the lower face of the shelf board 7. .. The length of the L-shaped tube 20d is designed so that the upper end surface thereof rotates along a plurality of through holes 7b2 formed in the shelf plate 7.
 そして、逆洗アーム20は、モータ9により回転する回転軸8の回転にしたがい動作し、L字管20c、20dの上端面が棚板7の下面に密接すると共に、フィルタエレメント10の下端部が設置されている貫通孔7b(7b1、7b2)と合致する位置に配置される。これにより、逆洗アーム20は、L字管20c、20dの上端面が、棚板7をシールしながら連続的(若しくは断続的)に回動して順次フィルタエレメント10に連通する。 Then, the backwash arm 20 operates according to the rotation of the rotary shaft 8 rotated by the motor 9, and the upper end surfaces of the L-shaped tubes 20c and 20d are brought into close contact with the lower surface of the shelf plate 7, and the lower end portion of the filter element 10 is moved. The through holes 7b (7b1 and 7b2) that are installed are arranged at positions that match. As a result, in the backwash arm 20, the upper end surfaces of the L-shaped pipes 20c and 20d are continuously (or intermittently) rotated while sealing the shelf 7, and are successively communicated with the filter element 10.
 具体的には、図示しない制御回路に制御されて動作するモータ9により、L字管20cが動作し、その上端面が、棚板7に形成された複数の貫通孔7b1のいずれかに接続される。これにより、L次管20cは、前記接続した貫通孔7b1を介して、当該貫通孔7b1の位置に設置されたフィルタエレメント10と接続する(「L字管20c」と、後述する「フィルタエレメント10の外側エレメント11の内周測面部と、内側エレメント12の外周側面部との間の領域」とが連通する)。
 また、前記制御回路に制御されて動作するモータ9により、L字管20dが動作して、その上端面が、棚板7に形成された複数の貫通孔7b2のいずれかに接続される。これにより、L字管20dは、当該接続した貫通孔7b2を介して、この貫通孔7b2の位置に設置されたフィルタエレメント10と接続する(L字管20dと、後述する「フィルタエレメント10の外側エレメント11の内周測面部と、内側エレメント12の外周側面部との間の領域」とが連通する)。
Specifically, the L-shaped tube 20c is operated by the motor 9 controlled and controlled by a control circuit (not shown), and the upper end surface thereof is connected to one of the plurality of through holes 7b1 formed in the shelf board 7. It As a result, the L secondary pipe 20c is connected to the filter element 10 installed at the position of the through hole 7b1 via the connected through hole 7b1 ("L-shaped pipe 20c" and "filter element 10" to be described later. The area between the inner peripheral surface measuring portion of the outer element 11 and the outer peripheral side surface portion of the inner element 12 communicate with each other.
Further, the L-shaped tube 20d is operated by the motor 9 controlled and operated by the control circuit, and the upper end surface thereof is connected to one of the plurality of through holes 7b2 formed in the shelf plate 7. Thereby, the L-shaped pipe 20d is connected to the filter element 10 installed at the position of the through hole 7b2 via the connected through hole 7b2 (the L-shaped pipe 20d and the "outside of the filter element 10" described later. The area between the inner peripheral surface measuring portion of the element 11 and the outer peripheral side surface portion of the inner element 12 communicate with each other).
 また、フィルタエレメント10は、図1、2に示すように、両端が貫通している中空円筒状に形成された外側エレメント(外側フィルタエレメント)11と、外側エレメント11の筒内に、外側エレメント11と中心軸を同一にして配置され且つ両端が貫通している中空円筒状に形成された内側エレメント(内側フィルタエレメント)12と、フィルタエレメント10の下端側において内側エレメント12の下端部の開口を塞ぐ円形板状の下蓋(下端部閉塞部)13と、フィルタエレメント10の上端側において外側エレメント11の内周側面部と内側エレメント12の外周側面部との間に形成れた隙間部を塞ぐ環状(ドーナツ形の板状)の上蓋(上端部閉塞部)14とを備えている。 In addition, as shown in FIGS. 1 and 2, the filter element 10 includes an outer element (outer filter element) 11 formed in a hollow cylindrical shape having both ends penetrating, and an outer element 11 in a cylinder of the outer element 11. And an inner element (inner filter element) 12 formed in the shape of a hollow cylinder having the same central axis and having both ends penetrating, and closing the opening of the lower end of the inner element 12 on the lower end side of the filter element 10. A circular plate-like lower lid (lower end portion closing portion) 13 and an annular shape that closes a gap formed between the inner peripheral side surface portion of the outer element 11 and the outer peripheral side surface portion of the inner element 12 on the upper end side of the filter element 10. And an upper cover (upper end closed portion) 14 (a donut-shaped plate shape).
 上記の上蓋14は、その中心部に、内側エレメント12の直径寸法(内周側面部の直径寸法)と同じ長さ寸法に形成された円形の開口(貫通孔)14aを有する環状(ドーナツ形の板状)に形成されている。そして、内側エレメント12の筒内は、開口14aを介して、フィルタエレメント10の外側(上側エリアA2の領域)と連通している。
 なお、外側エレメント11は、内側エレメント12と同じ高さ寸法に形成されている(長手方向の長さ寸法が同じ寸法になっている)。また、外側エレメント11の直径の長さ寸法(径方向の長さ寸法)は、内側エレメント12の直径の長さ寸法(径方向の長さ寸法)よりも大きくなっている。
The upper lid 14 has an annular shape (a donut shape) having a circular opening (through hole) 14a formed at the center thereof in the same length dimension as the diameter dimension of the inner element 12 (diameter dimension of the inner peripheral side surface portion). It is formed in a plate shape. The inside of the cylinder of the inner element 12 communicates with the outside of the filter element 10 (the area of the upper area A2) via the opening 14a.
The outer element 11 is formed to have the same height dimension as the inner element 12 (the length dimension in the longitudinal direction is the same dimension). Further, the length dimension of the diameter of the outer element 11 (length dimension in the radial direction) is larger than the length dimension of the diameter of the inner element 12 (length dimension in the radial direction).
 また、第1実施形態では、外側エレメント11及び内側エレメント12は、いずれも、ステンレス等の金属製の枠体(図示せず)にノッチワイヤ等のろ材を螺旋状に巻き付けることにより円筒状に形成されたものを用いる。 Further, in the first embodiment, both the outer element 11 and the inner element 12 are formed into a cylindrical shape by spirally winding a filter material such as a notch wire around a metal frame body (not shown) such as stainless steel. Use the one.
 上記の枠体には、例えば、円形リング状の上側部材と、円形リング状の下側部材と、上側部材と下側部材との間に配設された棒状のワイヤ支持材とにより構成されたものを用いることができる。この場合、枠体は、上側部材と下側部材とを所定間隔を開けて配置し(相対向して配置し)、上側部材と下側部材との間に複数のワイヤ支持材を所定間隔・開けて円周状に配設し、各ワイヤ支持材の両端をそれぞれ上側部材と下側部材に固着することにより形成される。
 なお、外側エレメント11に用いる枠体は、内側エレメントに用いる枠体よりも、直径の長さ寸法が大きくなっている。
The frame body is composed of, for example, a circular ring-shaped upper member, a circular ring-shaped lower member, and a rod-shaped wire support member arranged between the upper member and the lower member. Any thing can be used. In this case, in the frame body, the upper member and the lower member are arranged with a predetermined gap (opposed to each other), and the plurality of wire support members are arranged with a predetermined gap between the upper member and the lower member. It is formed by opening and arranging in a circumferential shape, and fixing both ends of each wire support member to an upper member and a lower member, respectively.
The frame body used for the outer element 11 has a larger diameter length than the frame body used for the inner element.
 そして、外側エレメント11用の枠体の円周状に配置されたワイヤ支持材に、ノッチワイヤを外接させながら螺旋状に巻き付けて積層させていくことにより、中空円筒状の外側エレメント11が形成される。また、内側エレメント12用の枠体の円周状に配置されたワイヤ支持材に、ノッチワイヤを外接させながら螺旋状に巻き付けて積層させていくことにより、中空円筒状の内側エレメント12が形成される The hollow cylindrical outer element 11 is formed by spirally winding and stacking the notch wire on the circumferentially arranged wire support material of the frame for the outer element 11 while being circumscribed. .. In addition, the hollow cylindrical inner element 12 is formed by spirally winding and stacking the notch wire on the circumferentially arranged wire support material of the frame for the inner element 12 while being circumscribed.
 また、フィルタエレメント10は、例えば、以下のように組み立てる。
 具体的には、上記のように形成した外側エレメント11の筒内に、上記のように形成した内側エレメント12を配置し、外側エレメント11及び内側エレメント12の中心軸が一致するように位置決めをする。すなわち、外側エレメント11と、内側エレメント12とを中心軸を同一にして配置する。
 その後、フィルタエレメント10の下端側において内側エレメント12の下端部の開口(内側エレメント12の下端部の筒内)を塞ぐ円形板状の下蓋13を取り付ける。また、フィルタエレメント10の上端側において外側エレメント11の内周側面部と、内側エレメント12の外周側面部との間に形成された隙間部を塞ぐ上蓋14を取り付ける。これにより、フィルタエレメント10が完成する。なお、上蓋14により、外側エレメント11及び内側エレメント12が接続され、一体に構成された部品(製品)になる。
Moreover, the filter element 10 is assembled as follows, for example.
Specifically, the inner element 12 formed as described above is arranged in the cylinder of the outer element 11 formed as described above, and positioning is performed so that the central axes of the outer element 11 and the inner element 12 coincide with each other. .. That is, the outer element 11 and the inner element 12 are arranged with their central axes the same.
Then, a circular plate-shaped lower lid 13 that closes the opening at the lower end of the inner element 12 (inside the cylinder at the lower end of the inner element 12) on the lower end side of the filter element 10 is attached. Further, on the upper end side of the filter element 10, an upper lid 14 is attached which closes a gap formed between the inner peripheral side surface of the outer element 11 and the outer peripheral side surface of the inner element 12. As a result, the filter element 10 is completed. In addition, the outer element 11 and the inner element 12 are connected by the upper lid 14 to form an integrated component (product).
 また、フィルタエレメント10は、上述したように、逆洗型ろ過装置Wのハウジング1の内部に設置されている棚板7の貫通孔7bの位置に取り付けられる。
 具体的には、フィルタエレメント10は、外側エレメント11の内周側面部が、棚板7の貫通孔7bの内周側面部と面一になるように位置決めされ、その下端部が、棚板7の上面に固定されて設置される。
Further, as described above, the filter element 10 is attached to the position of the through hole 7b of the shelf plate 7 installed inside the housing 1 of the backwash filter W.
Specifically, the filter element 10 is positioned such that the inner peripheral side surface portion of the outer element 11 is flush with the inner peripheral side surface portion of the through hole 7 b of the shelf board 7, and the lower end portion thereof is located on the shelf board 7. It is fixed and installed on the upper surface of.
 なお、本実施形態では、フィルタエレメント10を構成する外側エレメント11及び内側エレメント12は、枠体にノッチワイヤ等のろ材を螺旋状に巻き付けることにより、中空円筒状に形成されているが、特にこれに限定されるものではない。外側エレメント11及び内側エレメント12は、ろ材で形成されている側面部に流体を通過させてろ過すると共に、逆洗が可能なものであれば良い。例えば、外側エレメント11及び内側エレメント12は、ろ材にノッチワイヤではなく金網を用いたものであっても良い。 In addition, in the present embodiment, the outer element 11 and the inner element 12 constituting the filter element 10 are formed in a hollow cylindrical shape by spirally winding a filter material such as a notch wire around the frame body. It is not limited. The outer element 11 and the inner element 12 may be those capable of allowing a fluid to pass through a side surface portion formed of a filter medium for filtering and performing backwashing. For example, the outer element 11 and the inner element 12 may use wire mesh instead of the notch wire as the filter medium.
 次に、第1実施形態のろ過装置Wにより行われるろ過処理及び逆洗処理について、図1、4を参照しながら説明する。
 ここで、図4は、第1実施形態の逆洗型ろ過装置のろ過処理工程及び逆洗処理工程を説明するための模式図である。なお、図4に示す矢印は、流体の流れを示している。
Next, the filtering process and the backwashing process performed by the filtering device W of the first embodiment will be described with reference to FIGS.
Here, FIG. 4 is a schematic diagram for explaining the filtration process and the backwash process of the backwash type filtering device of the first embodiment. In addition, the arrow shown in FIG. 4 has shown the flow of the fluid.
《ろ過処理工程》
 逆洗型ろ過装置Wのハウジング1の内部に設置されているフィルタエレメント10は、その下端部に棚板7の貫通孔7bを介して逆洗アーム20が接続されていないときに、ろ過処理を行うように構成されている。図1に示す例では、向かって右側から1番目のフィルタエレメント10と、向かって右側から3番目のフィルタエレメント10がろ過処理を行う。また、図4に示す例では、左右両側のフィルタエレメント10がろ過処理を行う。
<Filtration process>
The filter element 10 installed inside the housing 1 of the backwashing filtration apparatus W performs a filtering process when the backwash arm 20 is not connected to the lower end of the backwash arm 20 through the through hole 7b of the shelf plate 7. Is configured to do. In the example shown in FIG. 1, the first filter element 10 from the right side and the third filter element 10 from the right side perform the filtering process. Further, in the example shown in FIG. 4, the filter elements 10 on both the left and right sides perform the filtering process.
 具体的には、ろ過処理を行うフィルタエレメント10は、棚板7の貫通孔7bを介して逆洗アーム20が接続されていない状態の場合、装置入口4から下側エリアA1に流入してくる「ろ過前の流体(ゴミ等のろ過対象物(付着物)が含まれた流体)」が、貫通孔7bを通って、フィルタエレメント10の下端部の開口から流入してくる。
 なお、第1実施形態では、フィルタエレメント10を構成する内側エレメント12の下端部の開口が下蓋13により塞がれて閉塞され、外側エレメント11の下端部の内周測面部と、内側エレメント12の下端部の外周側面部との間の隙間部が解放されて開口している。
 そのため、図4に示すように、フィルタエレメント10では、外側エレメント11の下端部の内周測面部と、内側エレメント12の下端部の外周側面部との間の隙間部から、外側エレメント11の内周測面部と、内側エレメント12の外周側面部との間の領域(第1領域)に「ろ過前の流体」が流入してくる。
Specifically, when the backwash arm 20 is not connected via the through hole 7b of the shelf plate 7, the filter element 10 that performs the filtering process flows from the device inlet 4 into the lower area A1. The “fluid before filtration (fluid containing a filtration target (adhesion) such as dust)” flows through the through hole 7b and flows from the opening at the lower end of the filter element 10.
In the first embodiment, the opening of the lower end portion of the inner element 12 constituting the filter element 10 is closed and closed by the lower lid 13, and the inner circumferential surface of the lower end portion of the outer element 11 and the inner element 12 are closed. The gap between the outer peripheral side surface of the lower end of the is opened and opened.
Therefore, as shown in FIG. 4, in the filter element 10, the inside of the outer element 11 is separated from the gap between the inner peripheral surface section of the lower end of the outer element 11 and the outer peripheral side surface of the lower end of the inner element 12. The “fluid before filtration” flows into the region (first region) between the peripheral surface portion and the outer peripheral side surface portion of the inner element 12.
 また、フィルタエレメント10の上端部では、外側エレメント11の上端部の内周側面部と、内側エレメント12の上端部の外周側面部との間に形成れた隙間部が、上蓋14により塞がれて閉塞されている。また、フィルタエレメント10の上端部において、内側エレメント12の内周測面部の内側部分(筒内)が開口された状態になっている。 In addition, at the upper end of the filter element 10, a gap formed between the inner peripheral side surface of the upper end of the outer element 11 and the outer peripheral side surface of the upper end of the inner element 12 is closed by the upper lid 14. Have been blocked. In addition, at the upper end of the filter element 10, the inner portion (inside the cylinder) of the inner circumferential surface of the inner element 12 is open.
 この構成により、外側エレメント11の内周測面部と、内側エレメント12の外周側面部との間の領域(第1領域)に流入してきた「ろ過前の流体」は、その一部が、外側エレメント11の内周側面部から外周側面部を通過して(すなわち、外側エレメント11を通過して)フィルタエレメント10の外側の領域(上側エリアA2の領域)に流出する。このときに、流体に含まれるゴミ等のろ過対象物が外側エレメント11に捕捉されていき、外側エレメント11を通過した流体からはゴミ等が取り除かれる。すなわち、外側エレメント11を通過した流体は、ろ過されている。 With this configuration, a part of the “fluid before filtration” that has flowed into the region (first region) between the inner peripheral surface measuring portion of the outer element 11 and the outer peripheral side surface portion of the inner element 12 is part of the outer element. After passing through the outer peripheral side surface portion (that is, passing through the outer side element 11) from the inner peripheral side surface portion of 11 to the area outside the filter element 10 (the upper area A2 area). At this time, the filtering target such as dust contained in the fluid is captured by the outer element 11, and the dust and the like are removed from the fluid that has passed through the outer element 11. That is, the fluid that has passed through the outer element 11 is filtered.
 また、外側エレメント11の内周測面部と、内側エレメント12の外周側面部との間の領域(第1領域)に流入してきた「ろ過前の流体」は、その他部(外側エレメント11を通過した以外の流体)が、内側エレメント12の外周側面部から内周側面部を通過して(すなわち、内側エレメント12を通過して)、内側エレメント12の筒内に流入してくる。このときに、流体に含まれるゴミ等のろ過対象物が内側エレメント12に捕捉されていき、内側エレメント12を通過した流体からはゴミ等が取り除かれる。
 なお、内側エレメント12を通過し、内側エレメント12の筒内に流入してきた「ろ過された流体」は、内側エレメント12の上端の開口(及び上蓋14の開口14a)を通って、フィルタエレメント10の外側の領域(上側エリアA2の領域)に流出する。
In addition, the “fluid before filtration” that has flowed into the region (first region) between the inner peripheral surface measuring portion of the outer element 11 and the outer peripheral side surface portion of the inner element 12 has passed through the other portion (passing through the outer element 11). Fluid other than) flows from the outer peripheral side surface portion of the inner element 12 through the inner peripheral side surface portion (that is, passes through the inner element 12) and flows into the cylinder of the inner element 12. At this time, the object to be filtered such as dust contained in the fluid is captured by the inner element 12, and the dust and the like are removed from the fluid that has passed through the inner element 12.
The “filtered fluid” that has passed through the inner element 12 and has flowed into the cylinder of the inner element 12 passes through the opening at the upper end of the inner element 12 (and the opening 14 a of the upper lid 14 ), and the It flows out to the outer area (the area of the upper area A2).
 なお、フィルタエレメント10によりろ過された流体(上側エリアA2の流体)は、その大部分が装置出口5から排出され、その一部が以下で説明する逆洗処理に利用される。 Most of the fluid filtered by the filter element 10 (fluid in the upper area A2) is discharged from the apparatus outlet 5, and a part of it is used for the backwashing process described below.
《逆洗処理工程》
 逆洗型ろ過装置Wのハウジング1の内部に設置されているフィルタエレメント10は、その下端部に棚板7の貫通孔7bを介して逆洗アーム20が接続されているときに、逆洗処理を行うように構成されている。図1に示す例では、向かって右側から2番目のフィルタエレメント10と、向かって右側から4番目のフィルタエレメント10が逆洗処理を行う。また、図4に示す例では、中央に配置されたフィルタエレメント10が逆洗処理を行う。
<<Backwash process>>
The filter element 10 installed inside the housing 1 of the backwashing filtration apparatus W is backwashed when the backwash arm 20 is connected to the lower end of the backwash arm 20 through the through hole 7b of the shelf plate 7. Is configured to do. In the example shown in FIG. 1, the second filter element 10 from the right side and the fourth filter element 10 from the right side perform backwash processing. Further, in the example shown in FIG. 4, the filter element 10 arranged in the center performs the backwashing process.
 具体的には、フィルタエレメント10は、棚板7の貫通孔7bを介して逆洗アーム20が接続された状態になると、フィルタエレメント10の下端部が逆洗アーム20により塞がれ、フィルタエレメント10の下端部への「ろ過前の流体」の流入が止まる。そして、「ろ過前の流体」の流入が止まると、フィルタエレメント10の外側を流れている流体(上側エリアA2を流れているろ過された流体)が、フィルタエレメント10の内部に流入してくる。 Specifically, in the filter element 10, when the backwash arm 20 is connected through the through hole 7b of the shelf plate 7, the lower end portion of the filter element 10 is closed by the backwash arm 20, and the filter element 10 is closed. The inflow of "fluid before filtration" to the lower end of 10 is stopped. Then, when the inflow of the "fluid before filtration" is stopped, the fluid flowing outside the filter element 10 (the filtered fluid flowing in the upper area A2) flows into the inside of the filter element 10.
 なお、フィルタエレメント10の上端部では、上蓋14により、外側エレメント11の上端部の内周側面部と、内側エレメント12の上端部の外周側面部との間に形成れた隙間部が塞がれていると共に、上蓋14の開口14aにより内側エレメント12の上端部の開口が解放された状態になっている。
 また、フィルタエレメント10の下端部では、内側エレメント12の下端部の開口が下蓋13により塞がれて閉塞されていると共に、外側エレメント11の下端部の内周測面部と、内側エレメント12の下端部の外周側面部との間の隙間部が解放されて開口している。
At the upper end of the filter element 10, the upper lid 14 closes a gap formed between the inner peripheral side surface of the upper end of the outer element 11 and the outer peripheral side surface of the upper end of the inner element 12. At the same time, the opening 14a of the upper lid 14 opens the upper end of the inner element 12.
Further, at the lower end of the filter element 10, the opening of the lower end of the inner element 12 is closed and closed by the lower lid 13, and the inner circumferential surface of the lower end of the outer element 11 and the inner element 12 are covered. A gap between the lower end portion and the outer peripheral side surface portion is opened and opened.
 この構成により、フィルタエレメント10は、逆洗アーム20が接続された状態になり、フィルタエレメント10の下端部への「ろ過前の流体」の流入が止まると、上蓋14の開口14aにより解放されている内側エレメント12の上端部の開口から、内側エレメント12の筒内に「上側エリアA2にある、ろ過された流体」が流入してくる。
 また、内側エレメント12は、その下端部の開口が下蓋13により塞がれて閉塞されているため、筒内に流入してきた「ろ過された流体」は、内側エレメント12の内周側面部から外周側面部を通過して(すなわち、内側エレメント12を通過して)、内側エレメント12の外周測面部と、外側エレメント11の内周側面部との間の領域(第1領域)に流入する。このときに、内側エレメント12の側面部の付着しているゴミ等の付着物(ろ過対象物)が洗い流されて取り除かれる逆洗処理が行われる。なお、内側エレメント12を通過した流体は、逆洗処理された付着物(ろ過対象物)が含まれた流体(逆洗液)になっている。
With this configuration, the backwash arm 20 is connected to the filter element 10, and when the “pre-filtration fluid” stops flowing into the lower end portion of the filter element 10, it is released by the opening 14 a of the upper lid 14. The “filtered fluid in the upper area A2” flows into the cylinder of the inner element 12 through the opening at the upper end of the inner element 12.
Further, since the opening of the lower end portion of the inner element 12 is closed and closed by the lower lid 13, the “filtered fluid” that has flowed into the cylinder is discharged from the inner peripheral side surface portion of the inner element 12. After passing through the outer peripheral side surface portion (that is, passing through the inner element 12 ), it flows into a region (first region) between the outer peripheral surface measuring portion of the inner element 12 and the inner peripheral side surface portion of the outer element 11. At this time, a backwashing process is performed in which adhered substances (objects to be filtered) such as dust adhering to the side surfaces of the inner element 12 are washed away and removed. The fluid that has passed through the inner element 12 is a fluid (backwashing liquid) that contains the backwashed deposit (object to be filtered).
 さらに、フィルタエレメント10は、逆洗アーム20が接続された状態になり、フィルタエレメント10の下端部への「ろ過前の流体」の流入が止まると、上側エリアA2を流れている「ろ過された流体」が外側エレメント11の外周側面部から内周側面部を通過して(すなわち、外側エレメント11を通過して)、内側エレメント12の外周測面部と、外側エレメント11の内周側面部との間の領域(第1領域)に流入する。このときに、外側エレメント11の側面部の付着しているゴミ等の付着物(ろ過対象物)が洗い流されて取り除かれる逆洗処理が行われる。なお、外側エレメント11を通過した流体は、逆洗処理された付着物(ろ過対象物)が含まれた流体(逆洗液)になっている。 Further, when the backwash arm 20 is connected to the filter element 10 and the "fluid before filtration" stops flowing into the lower end portion of the filter element 10, the filter element 10 is "filtered" flowing in the upper area A2. The “fluid” passes from the outer peripheral side surface portion of the outer element 11 to the inner peripheral side surface portion (that is, passes through the outer element 11 ), and the outer peripheral surface measuring portion of the inner element 12 and the inner peripheral side surface portion of the outer element 11 It flows into the area between them (first area). At this time, a backwashing process is performed in which adhered substances (objects to be filtered) such as dust adhering to the side surface of the outer element 11 are washed away and removed. The fluid that has passed through the outer element 11 is a fluid (backwashing liquid) that contains the backwashed deposit (object to be filtered).
 そして、内側エレメント12の外周測面部と、外側エレメント11の内周側面部との間の領域(第1領域)に流入してきた逆洗液(内側エレメント12を通過した流体及び外側エレメント11を通過した流体)は、外側エレメント11の下端部の内周測面部と、内側エレメント12の下端部の外周側面部との間の隙間部を通って、逆洗アーム20に流入する。また、逆洗アーム20に流入した逆洗液は、排出管30を経由して逆洗液排出口管40に入り、逆洗型ろ過装置Wから排出されていく。 Then, the backwash liquid (the fluid that has passed through the inner element 12 and the outer element 11) that has flowed into the region (first region) between the outer peripheral surface measurement portion of the inner element 12 and the inner peripheral side surface portion of the outer element 11. Fluid) flows into the backwash arm 20 through the gap between the inner peripheral surface measuring portion of the lower end of the outer element 11 and the outer peripheral side surface of the lower end of the inner element 12. The backwash liquid that has flowed into the backwash arm 20 enters the backwash liquid outlet pipe 40 via the discharge pipe 30, and is discharged from the backwash type filtering device W.
 このように、第1実施形態の構成によれば、フィルタエレメント10は、外側エレメント11及び内側エレメント12の両者でろ過処理ができるようになっており、上述した従来技術の逆洗型ろ過装置のフィルタエレメント500(図12参照)と比べて、ろ過処理面積が増加した構成になっている。すなわち、本実施形態のフィルタエレメント10によれば、従来技術のフィルタエレメント500と比べて、フィルタエレメント・1本当たり「ろ過性能」が向上する。
 また、第1実施形態のフィルタエレメント10は、下蓋13及び上蓋14の構成により、外側エレメント11及び内側エレメント12の両者を同時に逆洗することができる。すなわち、第1実施形態は、ろ過処理面積を増加させた構成でありながら、逆洗機能も維持される。
As described above, according to the configuration of the first embodiment, the filter element 10 can be filtered by both the outer element 11 and the inner element 12, and thus the filter element 10 of the above-described conventional backwashing type filtering device can be used. As compared with the filter element 500 (see FIG. 12), the filtration processing area is increased. That is, according to the filter element 10 of the present embodiment, the “filtration performance” per filter element is improved as compared with the filter element 500 of the related art.
Further, in the filter element 10 of the first embodiment, both the outer element 11 and the inner element 12 can be backwashed simultaneously due to the configuration of the lower lid 13 and the upper lid 14. That is, in the first embodiment, the backwash function is maintained while the filtration processing area is increased.
 そのため、第1実施形態によれば、逆洗型ろ過装置Wにおいて、従来技術のものと比べて、フィルタエレメント10の本数を減少させることができる。その結果、第1実施形態の逆洗型ろ過装置Wは、従来技術のものと比べて、ハウジング1のサイズを小型化することができ、その結果、逆洗型ろ過装置W自体が小型化できる。 Therefore, according to the first embodiment, the number of the filter elements 10 can be reduced in the backwashing filtration device W as compared with the conventional technology. As a result, the backwash type filtration device W of the first embodiment can reduce the size of the housing 1 as compared with that of the prior art, and as a result, the backwash type filtration device W itself can be miniaturized. ..
《第1実施形態の変形例》
 次に、第1実施形態の逆洗型ろ過装置Wの変形例について、図5を参照しながら説明する。ここで、図5は、第1実施形態の逆洗型ろ過装置の変形例を示した模式図である。
 なお、第1実施形態の変形例は、第1実施形態のフィルタエレメント10及び棚板7の構成を一部変形したものであり、フィルタエレメント10及び棚板7以外の構成は、第1実施形態と同じである。そのため、第1実施形態の変形例では、第1実施形態と同じ構成には同じ符号を付している。また、第1実施形態の変形例では、第1実施形態と異なる部分を中心に説明する。
<<Modification of the first embodiment>>
Next, a modified example of the backwashing type filtration device W of the first embodiment will be described with reference to FIG. Here, FIG. 5 is a schematic diagram showing a modified example of the backwashing type filtration device of the first embodiment.
The modified example of the first embodiment is a partial modification of the configurations of the filter element 10 and the shelf plate 7 of the first embodiment. The configurations other than the filter element 10 and the shelf plate 7 are the same as those of the first embodiment. Is the same as. Therefore, in the modification of the first embodiment, the same components as those in the first embodiment are designated by the same reference numerals. Further, in the modified example of the first embodiment, the description will be focused on the parts different from the first embodiment.
 第1実施形態の変形例は、フィルタエレメント10を構成する内側エレメント12の下端部を塞いで閉塞する構成を、下蓋13に変えて、棚板7に設けるようにしている。
 図5に示すように、第1実施形態の変形例では、フィルタエレメント10に下蓋13が設けられていない。一方、第1実施形態の変形例では、棚板7に、内側エレメント12の下端部の開口を塞いで閉塞する平面視・円形状の島部(下端部閉塞部)7dが形成されている。
In the modified example of the first embodiment, the structure in which the lower end of the inner element 12 constituting the filter element 10 is closed and closed is changed to the lower lid 13 and provided on the shelf plate 7.
As shown in FIG. 5, in the modification of the first embodiment, the filter element 10 is not provided with the lower lid 13. On the other hand, in the modified example of the first embodiment, the shelf plate 7 is formed with an island portion (lower end portion closing portion) 7d having a circular shape in plan view, which closes and closes the opening of the lower end portion of the inner element 12.
 具体的には、第1実施形態の変形例では、棚板7に、フィルタエレメント用の貫通孔7b(円形の貫通孔)に代えて、環状(ドーナツ状)に開口する貫通孔7cを形成すると共に、貫通孔7cの内円側に、平面視・円形状の島部7dを形成している。 Specifically, in the modified example of the first embodiment, a through hole 7c having an annular (doughnut-shaped) opening is formed in the shelf plate 7 instead of the through hole 7b (circular through hole) for the filter element. At the same time, an island portion 7d having a circular shape in plan view is formed on the inner circle side of the through hole 7c.
 上記の貫通孔7cは、平面視において、外側エレメント11の内周測面と、内側エレメント12の外周側面との間の隙間部と同じ幅寸法の環状に形成されている。そして、外側エレメント11の内周測面と、内側エレメント12の外周側面との間の領域は、貫通孔7cを介して、ハウジング1の下側エリアA1と連通する。
 また、島部7dは、貫通孔7cの側面部に、図示しない支持部材により支持されており、内側エレメント12の下端部の開口を塞ぎ、第1実施形態の下蓋13と同じ役割を果たす。
The through hole 7c is formed in an annular shape having the same width dimension as the gap portion between the inner peripheral surface of the outer element 11 and the outer peripheral side surface of the inner element 12 in plan view. The area between the inner peripheral surface of the outer element 11 and the outer peripheral side surface of the inner element 12 communicates with the lower area A1 of the housing 1 through the through hole 7c.
Further, the island portion 7d is supported on the side surface portion of the through hole 7c by a supporting member (not shown), closes the opening of the lower end portion of the inner element 12, and plays the same role as the lower lid 13 of the first embodiment.
《第2実施形態》
 次に、本発明の第2実施形態の逆洗型ろ過装置Wについて、図6及び図7を参照しながら説明する。ここで、図6は、第2実施形態の逆洗型ろ過装置用のフィルタエレメントを説明するための模式図であり、(a)がフィルタエレメントの縦方向の断面を示した模式図であり、(b)がフィルタエレメントの下端に設けられる下蓋を示した模式図であり、(c)がフィルタエレメントの上端に設けられる上蓋を示した模式図である。また、図7は、第2実施形態の逆洗型ろ過装置のろ過工程を説明するための模式図である。
<<Second Embodiment>>
Next, a backwashing type filtration device W according to a second embodiment of the present invention will be described with reference to FIGS. 6 and 7. Here, FIG. 6 is a schematic diagram for explaining the filter element for the backwash filter of the second embodiment, and FIG. 6A is a schematic diagram showing a vertical cross section of the filter element, (B) is a schematic diagram showing a lower lid provided at the lower end of the filter element, and (c) is a schematic diagram showing an upper lid provided at the upper end of the filter element. Further, FIG. 7 is a schematic diagram for explaining the filtration process of the backwashing type filtration device of the second embodiment.
 なお、第2実施形態の逆洗型ろ過装置Wは、第1実施形態で用いたフィルタエレメント10を、フィルタエレメント100に変更したものであり、それ以外の構成は、第1実施形態と同じである。そのため、第2実施形態では、第1実施形態と同じ構成には同じ符号を付している。また、第2実施形態の説明では、第1実施形態と異なる部分を中心に説明する。 The backwashing filter W of the second embodiment is the same as that of the first embodiment except that the filter element 10 used in the first embodiment is replaced by a filter element 100. is there. Therefore, in 2nd Embodiment, the same code|symbol is attached|subjected to the same structure as 1st Embodiment. Also, in the description of the second embodiment, the description will focus on the parts that are different from the first embodiment.
 図6に示すように、第2実施形態のフィルタエレメント100は、両端が貫通している中空円筒状に形成された第1エレメント(第1フィルタエレメント)101と、第1エレメント101の筒内に、第1エレメント101と中心軸を同一にして配置され且つ両端が貫通している中空円筒状に形成された第2エレメント(第2フィルタエレメント)102と、第2エレメント102の筒内に、第2エレメント102と中心軸を同一にして配置され且つ両端が貫通している中空円筒状に形成された第3エレメント(第3フィルタエレメント)103と、第3エレメント103の筒内に、第3エレメント103と中心軸を同一にして配置され且つ両端が貫通している中空円筒状に形成された第4エレメント(第4フィルタエレメント)104とを備えている。 As shown in FIG. 6, the filter element 100 of the second embodiment includes a first element (first filter element) 101 formed in a hollow cylindrical shape with both ends penetrating and a cylinder of the first element 101. A second element (second filter element) 102, which is arranged in the same central axis as the first element 101 and has a hollow cylindrical shape with both ends penetrating, and a second element 102 inside the cylinder. The third element (third filter element) 103, which is formed in the shape of a hollow cylinder and has the same central axis as that of the second element 102 and has both ends passing therethrough, and the third element in the cylinder of the third element 103. 103 and a fourth element (fourth filter element) 104 formed in the shape of a hollow cylinder and arranged with the same central axis and having both ends penetrating therethrough.
 なお、第1、2、3、4エレメント101、102、103、104は、いずれも、同じ高さ寸法に形成されている(長手方向の長さ寸法が同じに形成されている)。また、第1エレメント101の直径の長さ寸法(径方向の長さ寸法)は、第2エレメント102の直径の長さ寸法(径方向の長さ寸法)よりも大きくなっており、第2エレメント102の直径の長さ寸法(径方向の長さ寸法)は、第3エレメント103の直径の長さ寸法(径方向の長さ寸法)よりも大きくなっており、第3エレメント103の直径の長さ寸法(径方向の長さ寸法)は、第4エレメント104の直径の長さ寸法(径方向の長さ寸法)よりも大きくなっている。 The first, second, third, fourth element 101, 102, 103, 104 are all formed to have the same height dimension (the length dimension in the longitudinal direction is the same). Further, the diameter length dimension (radial length dimension) of the first element 101 is larger than the diameter length dimension (radial length dimension) of the second element 102, and the second element The length dimension of the diameter of 102 (the length dimension in the radial direction) is larger than the length dimension of the diameter of the third element 103 (length dimension in the radial direction). The length dimension (the length dimension in the radial direction) is larger than the length dimension (the length dimension in the radial direction) of the diameter of the fourth element 104.
 また、フィルタエレメント100は、第2エレメント102の下端部の内周側面部と第3エレメント103の下端部の外周側面部との間に形成れた隙間部を塞ぐ環状(ドーナツ形の板状)の第1下蓋(下端部閉塞部)113aと、第4エレメント104の下端部の開口を塞ぐ円形板状の第2下蓋(下端部閉塞部)113bとを備えている。
 なお、フィルタエレメント100は、第1エレメント101の下端部の内周側面部と、第2エレメント102の下端部の外周側面部との間に形成された隙間部113s1が解放されて開口している。また、フィルタエレメント100は、第3エレメント103の下端部の内周側面部と、第4エレメント104の下端部の外周側面部との間に形成された隙間部113s2が解放されて開口している。
The filter element 100 has an annular shape (a donut-shaped plate shape) that closes a gap formed between the inner peripheral side surface of the lower end of the second element 102 and the outer peripheral side surface of the lower end of the third element 103. The first lower lid (lower end closing portion) 113a and the circular plate-shaped second lower lid (lower end closing portion) 113b that closes the opening of the lower end portion of the fourth element 104.
In the filter element 100, a gap portion 113s1 formed between the inner peripheral side surface portion of the lower end portion of the first element 101 and the outer peripheral side surface portion of the lower end portion of the second element 102 is opened and opened. .. Further, in the filter element 100, the gap 113s2 formed between the inner peripheral side surface of the lower end of the third element 103 and the outer peripheral side surface of the lower end of the fourth element 104 is opened and opened. ..
 また、フィルタエレメント100は、第1エレメント101の上端部の内周側面部と、第2エレメント102の上端部の外周側面部との間に形成れた隙間部を塞ぐ環状(ドーナツ形の板状)の第1上蓋(上端部閉塞部)114aと、第3エレメント103の上端部の内周側面部と、第4エレメント104の上端部の外周側面部との間に形成れた隙間部を塞ぐ環状(ドーナツ形の板状)の第2上蓋(上端部閉塞部)114bとを備えている。
 そして、フィルタエレメント100は、第2エレメント102の上端部の内周側面部と、第3エレメント103の上端部の外周側面部との間に形成された隙間部114s1が解放され開口している。また、フィルタエレメント100は、第4エレメント104の上端部の開口114s2が解放されている。
Further, the filter element 100 has an annular shape (a donut-shaped plate shape) that closes a gap formed between the inner peripheral side surface portion of the upper end portion of the first element 101 and the outer peripheral side surface portion of the upper end portion of the second element 102. The first upper lid (upper end closed portion) 114a, the inner peripheral side surface portion of the upper end portion of the third element 103, and the outer peripheral side surface portion of the upper end portion of the fourth element 104 are closed. An annular (doughnut-shaped plate) second upper lid (upper end closed portion) 114b is provided.
Then, in the filter element 100, the gap 114s1 formed between the inner peripheral side surface of the upper end of the second element 102 and the outer peripheral side surface of the upper end of the third element 103 is opened and opened. Further, in the filter element 100, the opening 114s2 at the upper end of the fourth element 104 is open.
 また、第1、2、3、4エレメント101、102、103、104は、いずれも、第1実施形態の外側エレメント11及び内側エレメント12と同様で、ステンレス等の金属製の枠体(図示せず)にノッチワイヤを螺旋状に巻き付けることにより円筒状に形成されている。 The first, second, third and fourth elements 101, 102, 103, 104 are the same as the outer element 11 and the inner element 12 of the first embodiment, and are made of metal such as stainless steel (not shown). It is formed into a cylindrical shape by spirally winding a notch wire around (not shown).
 そして、上記のフィルタエレメント100は、第1エレメント101の内周側面部が、棚板7の貫通孔7bの内周側面部と面一になるように位置決めされ、その下端部が、棚板7の上面に固定されて設置される。
 なお、棚板7の貫通孔7bの直径は、フィルタエレメント100の第1エレメント101の内周側面部の直径と同じ大きさ寸法になっている。
The filter element 100 is positioned such that the inner peripheral side surface portion of the first element 101 is flush with the inner peripheral side surface portion of the through hole 7b of the shelf board 7, and the lower end portion thereof is located at the shelf board 7. It is fixed and installed on the upper surface of.
The diameter of the through hole 7b of the shelf 7 is the same as the diameter of the inner peripheral side surface of the first element 101 of the filter element 100.
 次に、第2実施形態のろ過装置Wにより行われるろ過処理について、図7を参照しながら説明する。
 ここで、図7は、第2実施形態の逆洗型ろ過装置のろ過処理工程を説明するための模式図である。なお、図7に示す矢印は、流体の流れを示している。
Next, the filtering process performed by the filtering device W of the second embodiment will be described with reference to FIG. 7.
Here, FIG. 7 is a schematic diagram for explaining the filtration treatment process of the backwashing type filtration device of the second embodiment. In addition, the arrow shown in FIG. 7 has shown the flow of the fluid.
 逆洗型ろ過装置Wのハウジング1の内部に設置されているフィルタエレメント100は、第1実施形態と同様、その下端部に棚板7の貫通孔7bを介して逆洗アーム20が接続されていない場合に、ろ過処理を行うように構成されている。 The filter element 100 installed inside the housing 1 of the backwashing filtration apparatus W has the backwash arm 20 connected to the lower end portion thereof through the through hole 7b of the shelf plate 7 as in the first embodiment. If not, it is configured to perform a filtration process.
 具体的には、ろ過処理を行うフィルタエレメント100は、その下端部に棚板7の貫通孔7bを介して逆洗アーム20が接続されていない状態の場合、装置入口4から下側エリアA1に流入する「ろ過前の流体(ゴミ等のろ過対象物(付着物)が含まれた流体)」が、フィルタエレメント100の下端部の開口から流入してくる。 Specifically, when the backwash arm 20 is not connected to the lower end of the filter element 100 through the through hole 7b of the shelf 7 from the device inlet 4 to the lower area A1. The “fluid before filtration (fluid containing a filtration target (adhesion) such as dust)” flows in through the opening at the lower end of the filter element 100.
 具体的には、図示するように、フィルタエレメント100は、その下端部に棚板7の貫通孔7bを介して逆洗アーム20が接続されていない状態の場合、フィルタエレメント100の下端部の隙間部113s1から、第1エレメント101の内周側面部と、第2エレメント102の外周側面部との間の領域(第2領域)に「ろ過前の流体」が流入してくる。 Specifically, as shown in the drawing, in the filter element 100, when the backwash arm 20 is not connected to the lower end of the filter element 100 through the through hole 7b of the shelf 7, a gap at the lower end of the filter element 100 is provided. The “fluid before filtration” flows into the region (second region) between the inner peripheral side surface of the first element 101 and the outer peripheral side surface of the second element 102 from the portion 113s1.
 そして、第1エレメント101の内周側面部と、第2エレメント102の外周側面部との間の領域(第2領域)に流入してきた「ろ過前の流体」は、その一部が、第1エレメント101の内周側面部から外周側面部を通過して(すなわち、第1エレメント101を通過して)、フィルタエレメント100の外側の領域(上側エリアA2の領域)に流出する。このときに、「ろ過前の流体」に含まれるゴミ等のろ過対象物が第1エレメント101に捕捉されていき、第1エレメント101を通過した流体からはゴミ等が取り除かれる。 Then, part of the “fluid before filtration” that has flowed into the region (second region) between the inner peripheral side surface of the first element 101 and the outer peripheral side surface of the second element 102 is the first part. After passing through the inner peripheral side surface portion of the element 101 (that is, passing through the first element 101), the element 101 flows out to the area outside the filter element 100 (the upper area A2 area). At this time, the object to be filtered such as dust contained in the “fluid before filtration” is captured by the first element 101, and the dust is removed from the fluid that has passed through the first element 101.
 また、第1エレメント101の内周側面部と、第2エレメント102の外周側面部との間の領域(第2領域)に流入してきた「ろ過前の流体」は、その他部(第1エレメント101を通過した以外の流体)が、第2エレメント102の外周側面部から内周側面部を通過して(すなわち、第2エレメント102を通過して)、第2エレメント102の内周側面部と、第3エレメント103の外周側面部との間の領域(第3領域)に流入する。このときに、流体に含まれるゴミ等のろ過対象物が第2エレメント102に捕捉されていき、第2エレメント102を通過した流体からはゴミ等が取り除かれる。その後、第2エレメント102を通過して、第3領域に流入した流体(ろ過された流体)は、第2エレメント102の上端部の内周側面部と、第3エレメント103の上端部の外周側面部との間の隙間部114s1からフィルタエレメント100の外側の領域(上側エリアA2の領域)に流出する。 Further, the “fluid before filtration” flowing into the region (second region) between the inner peripheral side surface portion of the first element 101 and the outer peripheral side surface portion of the second element 102 is the other portion (the first element 101). Fluid other than that which has passed through) passes through the inner peripheral side surface portion from the outer peripheral side surface portion of the second element 102 (that is, passes through the second element 102), and the inner peripheral side surface portion of the second element 102, It flows into a region (third region) between the outer peripheral side surface portion of the third element 103. At this time, the filtration target such as dust contained in the fluid is captured by the second element 102, and the dust and the like are removed from the fluid that has passed through the second element 102. Then, the fluid (filtered fluid) that has passed through the second element 102 and has flowed into the third region is an inner peripheral side surface portion of the upper end portion of the second element 102 and an outer peripheral side surface portion of the upper end portion of the third element 103. From a gap 114s1 between the filter element 100 and the portion, it flows out to the area outside the filter element 100 (the area of the upper area A2).
 さらに、フィルタエレメント100は、その下端部に棚板7の貫通孔7bを介して逆洗アーム20が接続されていない状態の場合、フィルタエレメント100の下端部の隙間部113s2から、第3エレメント103の内周側面部と、第4エレメント104の外周側面部との間に形成された領域(第4領域)に「ろ過前の流体」が流入してくる。 Furthermore, when the backwash arm 20 is not connected to the lower end of the filter element 100 via the through hole 7b of the shelf plate 7, the filter element 100 starts from the gap 113s2 at the lower end of the filter element 100 to the third element 103. The “fluid before filtration” flows into the region (fourth region) formed between the inner peripheral side face of the first element 104 and the outer peripheral side face of the fourth element 104.
 そして、第3エレメント103の内周側面部と、第4エレメント104の外周側面部との間に形成された領域(第4領域)に流入してきた「ろ過前の流体」は、その一部が、第3エレメント103の内周側面部から外周側面部を通過して(すなわち、第3エレメント103を通過して)、第2エレメント102の内周側面部と、第3エレメント103の外周側面部との間の領域(第3領域)に流入する。このときに、流体に含まれるゴミ等のろ過対象物が第3エレメント103に捕捉されていき、第3エレメント103を通過した流体からはゴミ等が取り除かれる。その後、第3エレメント103を通過した流体(ろ過された流体)は、第2エレメント102の上端部の内周側面部と、第3エレメント103の上端部の外周側面部との間の隙間部114s1からフィルタエレメント100の外側の領域(上側エリアA2の領域)に流出する。 Then, part of the “fluid before filtration” that has flowed into the region (fourth region) formed between the inner peripheral side surface of the third element 103 and the outer peripheral side surface of the fourth element 104 is , Passing from the inner peripheral side surface portion of the third element 103 to the outer peripheral side surface portion (that is, passing through the third element 103), the inner peripheral side surface portion of the second element 102 and the outer peripheral side surface portion of the third element 103 Flows into a region (third region) between and. At this time, the filtering target such as dust contained in the fluid is captured by the third element 103, and the dust and the like are removed from the fluid that has passed through the third element 103. Thereafter, the fluid that has passed through the third element 103 (filtered fluid) has a gap 114s1 between the inner peripheral side surface of the upper end of the second element 102 and the outer peripheral side surface of the upper end of the third element 103. Flows out of the filter element 100 to the area outside (the area of the upper area A2).
 また、第3エレメント103の内周側面部と、第4エレメント104の外周側面部との間に形成された領域(第4領域)に流入してきた「ろ過前の流体」は、その他部(第3エレメント103を通過した以外の流体)が、第4エレメント104の外周側面部から内周側面部を通過して(すなわち、第4エレメント104を通過して)、第4エレメント104の筒内に流入する。このときに、流体に含まれるゴミ等のろ過対象物が第4エレメント104に捕捉されていき、第4エレメント104を通過した流体からはゴミ等が取り除かれる。その後、第4エレメント104を通過した流体(ろ過された流体)は、第4エレメント104の上端部の開口114s2からフィルタエレメント100の外側の領域(上側エリアA2の領域)に流出する。 In addition, the “fluid before filtration” flowing into the region (fourth region) formed between the inner peripheral side surface portion of the third element 103 and the outer peripheral side surface portion of the fourth element 104 is Fluid other than the fluid passing through the third element 103) passes from the outer peripheral side surface portion of the fourth element 104 to the inner peripheral side surface portion (that is, passes through the fourth element 104) and enters the cylinder of the fourth element 104. Inflow. At this time, the filtering target such as dust contained in the fluid is captured by the fourth element 104, and the dust and the like are removed from the fluid that has passed through the fourth element 104. After that, the fluid that has passed through the fourth element 104 (filtered fluid) flows out from the opening 114s2 at the upper end of the fourth element 104 to the area outside the filter element 100 (the area of the upper area A2).
 また、逆洗型ろ過装置Wのハウジング1の内部に設置されているフィルタエレメント100は、その下端部に棚板7の貫通孔7bを介して逆洗アーム20が接続されている場合に、逆洗処理を行うように構成されている。なお、逆洗処理工程では、図7に示す矢印と反対方向に流体が流れ、各エレメント(第1、第2、第3、第4エレメント101、102、103、104)が逆洗される。 In addition, the filter element 100 installed inside the housing 1 of the backwashing filtration device W has a backwash arm 20 connected to the lower end thereof through the through hole 7b of the shelf plate 7 when the backwash arm 20 is connected. It is configured to perform a washing process. In the backwashing process step, the fluid flows in the direction opposite to the arrow shown in FIG. 7, and each element (first, second, third, fourth element 101, 102, 103, 104) is backwashed.
 具体的には、フィルタエレメント100は、棚板7の貫通孔7bを介して逆洗アーム20が接続された状態になると、フィルタエレメント100が逆洗アーム20により塞がれ、フィルタエレメント100の下端部への「ろ過前の流体」の流入が止まり、以下で示す3つの流路を通って、各フィルタエレメント(第1、第2、第3、第4エレメント101、102、103、104)が逆洗される。 Specifically, in the filter element 100, when the backwash arm 20 is connected through the through hole 7b of the shelf plate 7, the filter element 100 is closed by the backwash arm 20, and the lower end of the filter element 100 is closed. The flow of the “fluid before filtration” into the section is stopped, and each filter element (first, second, third, fourth element 101, 102, 103, 104) passes through the three flow paths shown below. Backwashed.
 先ず、第1の流路を通過する工程を説明する。
 上記の「ろ過前の流体」の流入が止まると、上側エリアA2を流れている「ろ過された流体」が第1エレメント101の外周側面から内周側面を通過して(すなわち、第1エレメント101を通過して)、第1エレメント101の内周測面部と、第2エレメント102の外周側面部との間の領域(第2領域)に流入してくる。このときに、第1エレメント101の側面部の付着しているゴミ等の付着物(ろ過対象物)が洗い流されて取り除かれる逆洗処理が行われる。なお、第1エレメント101を通過した流体は、逆洗処理された付着物(ろ過対象物)が含まれた流体(逆洗液)になっている。この逆洗液は、後述する「第2エレメント102を逆洗した逆洗液」と共に、フィルタエレメント100の下端部の隙間部113s1から逆洗アーム20に流入する。また、逆洗アーム20に流入した逆洗液は、排出管30を経由して逆洗液排出口管40に入り、逆洗型ろ過装置Wから排出されていく。
First, the step of passing through the first flow path will be described.
When the inflow of the "fluid before filtration" is stopped, the "filtered fluid" flowing in the upper area A2 passes from the outer peripheral side surface to the inner peripheral side surface of the first element 101 (that is, the first element 101). Through the inner surface of the first element 101 and the outer peripheral side surface of the second element 102 (second area). At this time, a backwashing process is performed in which adhering substances (objects to be filtered) such as dust adhering to the side surface of the first element 101 are washed away and removed. The fluid that has passed through the first element 101 is a fluid (backwash liquid) that contains the backwash-processed deposit (object to be filtered). This backwash liquid flows into the backwash arm 20 from the gap 113s1 at the lower end of the filter element 100, together with the "backwash liquid obtained by backwashing the second element 102" described later. The backwash liquid that has flowed into the backwash arm 20 enters the backwash liquid outlet pipe 40 via the discharge pipe 30, and is discharged from the backwash type filtering device W.
 次に、第2の流路を通過する工程を説明する。
 上記の「ろ過前の流体」の流入が止まると、上側エリアA2を流れている「ろ過された流体」が、フィルタエレメント100の上端部の隙間部114s1を通って、第2エレメント102の内周測面部と、第3エレメント103の外周側面部との間の領域(第3領域)に流入する。
Next, the step of passing through the second flow path will be described.
When the inflow of the "fluid before filtration" is stopped, the "filtered fluid" flowing in the upper area A2 passes through the gap 114s1 at the upper end of the filter element 100 and passes through the inner circumference of the second element 102. It flows into a region (third region) between the surface-measuring portion and the outer peripheral side surface portion of the third element 103.
 なお、第2エレメント102の下端部の内周測面部と、第3エレメント103の下端部の外周側面部との間は第1下蓋113aで塞がれている。そのため、上記の流入してきた「ろ過された流体」は、その一部が、第2エレメント102の内周側面部から外周側面部を通過して(すなわち、第2エレメント102を通過して)、第2エレメント102の外周測面部と、第1エレメント101の内周側面部との間の領域(第2領域)に流入する。このときに、第2エレメント102の側面部の付着しているゴミ等の付着物(ろ過対象物)が洗い流されて取り除かれる逆洗処理が行われる。なお、第2エレメント102を通過した流体は、逆洗処理された付着物(ろ過対象物)が含まれた流体(逆洗液)になっている。この逆洗液は、上述した「第1エレメント101を逆洗した逆洗液」と共に、フィルタエレメント100の下端部の隙間部113s1から逆洗アーム20に流入し、逆洗型ろ過装置Wから排出されていく。 The first lower lid 113a closes the space between the inner peripheral surface measuring portion at the lower end of the second element 102 and the outer peripheral side surface portion at the lower end of the third element 103. Therefore, part of the inflowing “filtered fluid” passes from the inner peripheral side surface portion of the second element 102 to the outer peripheral side surface portion (that is, passes through the second element 102), It flows into a region (second region) between the outer peripheral surface measuring portion of the second element 102 and the inner peripheral side surface portion of the first element 101. At this time, a backwashing process is performed in which adhering substances (objects to be filtered) such as dust adhering to the side surface of the second element 102 are washed away and removed. The fluid that has passed through the second element 102 is a fluid (backwashing liquid) that contains the backwashed deposit (object to be filtered). This backwash liquid flows into the backwash arm 20 through the gap 113s1 at the lower end of the filter element 100 together with the above-mentioned "backwash liquid obtained by backwashing the first element 101", and is discharged from the backwash type filtration device W. Will be done.
 また、上記の第3領域に流入してきた「ろ過された流体」は、その他部(第2エレメント102を通過した以外の流体)が、第3エレメント103の外周側面部から内周側面部を通過して(すなわち、第3エレメント103を通過して)、第3エレメント103の内周測面部と、第4エレメント104の外周側面部との間の領域(第4領域)に流入する。このときに、第3エレメント103の側面部の付着しているゴミ等の付着物(ろ過対象物)が洗い流されて取り除かれる逆洗処理が行われる。なお、第3エレメント103を通過した流体は、逆洗処理された付着物(ろ過対象物)が含まれた流体(逆洗液)になっている。この逆洗液は、後述する「第4エレメント104を逆洗した逆洗液」と共に、フィルタエレメント100の下端部の隙間部113s2から逆洗アーム20に流入する。また、逆洗アーム20に流入してきた逆洗液は、排出管30を経由して逆洗液排出口管40に入り、逆洗型ろ過装置Wから排出されていく。 Further, in the “filtered fluid” that has flowed into the third region, the other portion (fluid other than the fluid that has passed through the second element 102) passes from the outer peripheral side surface portion of the third element 103 to the inner peripheral side surface portion. Then (that is, after passing through the third element 103), it flows into the region (fourth region) between the inner peripheral surface-measuring portion of the third element 103 and the outer peripheral side surface portion of the fourth element 104. At this time, a backwashing process is performed in which adhering substances such as dust (objects to be filtered) adhering to the side surface of the third element 103 are washed away and removed. The fluid that has passed through the third element 103 is a fluid (backwashing liquid) that contains the backwashed deposit (object to be filtered). The backwash liquid flows into the backwash arm 20 from the gap 113s2 at the lower end of the filter element 100 together with the "backwash liquid obtained by backwashing the fourth element 104" described later. In addition, the backwash liquid that has flowed into the backwash arm 20 enters the backwash liquid outlet pipe 40 via the discharge pipe 30, and is discharged from the backwash type filtering device W.
 最後に、第3の流路を通過する工程を説明する。
 上記の「ろ過前の流体」の流入が止まると、上側エリアA2を流れている「ろ過された流体」が、フィルタエレメント100の上端部の中央部にある開口114s2を通って、第4エレメント104の筒内の領域に流入する。
Finally, the step of passing through the third flow path will be described.
When the inflow of the "fluid before filtration" is stopped, the "filtered fluid" flowing in the upper area A2 passes through the opening 114s2 at the center of the upper end of the filter element 100 and passes through the fourth element 104. Flows into the area inside the cylinder.
 なお、第4レメント104は、下端部の開口が第2下蓋113bで塞がれている。そのため、第4レメント104の筒内に流入してきた「ろ過された流体」は、第4エレメント104の内周側面部から外周側面部を通過して(すなわち、第4エレメント104を通過して)、第4エレメント104の外周測面部と、第3エレメント103の内周側面部との間の領域(第4領域)に流入する。このときに、第4エレメント104の側面部の付着しているゴミ等の付着物(ろ過対象物)が洗い流されて取り除かれる逆洗処理が行われる。なお、第4エレメント104を通過した流体は、逆洗処理された付着物(ろ過対象物)が含まれた流体(逆洗液)になっている。この逆洗液は、上述した「第3エレメント103を逆洗した逆洗液」と共に、フィルタエレメント100の下端部の隙間部113s2から逆洗アーム20に流入し、逆洗型ろ過装置Wから排出されていく。 The opening of the lower end of the fourth element 104 is closed by the second lower lid 113b. Therefore, the “filtered fluid” that has flowed into the cylinder of the fourth element 104 passes from the inner peripheral side surface portion of the fourth element 104 to the outer peripheral side surface portion (that is, passes through the fourth element 104). , And flows into a region (fourth region) between the outer peripheral surface measuring portion of the fourth element 104 and the inner peripheral side surface portion of the third element 103. At this time, a backwashing process is performed in which adhering substances (filtration target) such as dust adhering to the side surface of the fourth element 104 are washed away and removed. The fluid that has passed through the fourth element 104 is a fluid (backwashing liquid) that contains backwashed deposits (objects to be filtered). This backwash liquid flows into the backwash arm 20 through the gap 113s2 at the lower end of the filter element 100 together with the above-mentioned "backwash liquid obtained by backwashing the third element 103", and is discharged from the backwash type filtration device W. Will be done.
 このように、第2実施形態の構成によれば、フィルタエレメント100は、第1エレメント101、第2エレメント102、第3エレメント103、及び第4エレメント104により、すなわち、4本のフィルタエレメントによりろ過処理ができるようになっており、上述した従来技術の逆洗型ろ過装置のフィルタエレメント500(図12参照)と比べて、ろ過処理面積が増加している。すなわち、第2実施形態のフィルタエレメント100によれば、従来技術のフィルタエレメント500と比べて、フィルタエレメント・1本当たり「ろ過性能」が向上する。
 また、第2実施形態のフィルタエレメント100は、第1下蓋113a、第2下蓋113b、第1上蓋114a及び第2上蓋114bの構成により、4本のフィルタエレメント(第1エレメント101、第2エレメント102、第3エレメント103、及び第4エレメント104)を同時に逆洗することができる。すなわち、本実施形態は、ろ過処理面積を増加させた構成でありながら、逆洗機能も維持される。
As described above, according to the configuration of the second embodiment, the filter element 100 is filtered by the first element 101, the second element 102, the third element 103, and the fourth element 104, that is, by four filter elements. The treatment area is increased, and the filtration treatment area is increased as compared with the filter element 500 (see FIG. 12) of the above-mentioned conventional backwash type filtration device. That is, according to the filter element 100 of the second embodiment, the “filtration performance” per filter element is improved as compared with the filter element 500 of the related art.
The filter element 100 of the second embodiment has four filter elements (the first element 101, the second element 101, the second element 111b, the second element element 113b, the second element element 113b, the second element element 113b, and the second element element 114b). The element 102, the third element 103, and the fourth element 104) can be backwashed simultaneously. That is, the present embodiment has a configuration in which the filtration processing area is increased, but the backwash function is also maintained.
 そのため、第2実施形態によれば、逆洗型ろ過装置Wにおいて、従来技術のものと比べて、フィルタエレメント10の本数を減少させることができる。その結果、第2施形態の逆洗型ろ過装置Wは、従来技術のものと比べて、ハウジング1のサイズを小型化することができ、すなわち、逆洗型ろ過装置W自体が小型化できる。 Therefore, according to the second embodiment, in the backwashing filter W, the number of the filter elements 10 can be reduced as compared with the conventional technology. As a result, the backwash type filtration device W of the second embodiment can reduce the size of the housing 1 as compared with the conventional technique, that is, the backwash type filtration device W itself can be miniaturized.
《第2実施形態の変形例》
 次に、第2実施形態の逆洗型ろ過装置Wの変形例について、図8、9を参照しながら説明する。ここで、図8は、第2実施形態の逆洗型ろ過装置の変形例を示した模式図である。また、図9は、第2実施形態の逆洗型ろ過装置の変形例の棚板に設けられる貫通孔を説明するための模式図である。
 なお、図9では、説明を簡略化するために、棚板7の中心部の貫通孔7aと、外側に配置されるフィルタ用の貫通孔を省略している。また、図9では、ハッチングしている部分がフィルタ用の貫通孔になっている。
<<Modification of Second Embodiment>>
Next, a modified example of the backwashing filter W of the second embodiment will be described with reference to FIGS. Here, FIG. 8 is a schematic diagram showing a modified example of the backwashing type filtration device of the second embodiment. Further, FIG. 9 is a schematic diagram for explaining the through holes provided in the shelf plate of the modified example of the backwashing type filtration device of the second embodiment.
In FIG. 9, the through hole 7a at the center of the shelf plate 7 and the through hole for the filter arranged outside are omitted for simplification of the description. Further, in FIG. 9, the hatched portion is a through hole for the filter.
 第2実施形態の変形例は、第2実施形態のフィルタエレメント100及び棚板7の構成を一部・変形したものであり、フィルタエレメント100及び棚板7以外の構成は、第2実施形態と同じである。そのため、第2実施形態の変形例では、第2実施形態と同じ構成には同じ符号を付している。また、第2実施形態の変形例では、第2実施形態と異なる部分を中心に説明する。 The modified example of the second embodiment is a partial modification of the configurations of the filter element 100 and the shelf plate 7 of the second embodiment. The configurations other than the filter element 100 and the shelf plate 7 are the same as those of the second embodiment. Is the same. Therefore, in the modification of the second embodiment, the same components as those in the second embodiment are designated by the same reference numerals. Further, in the modified example of the second embodiment, the description will be focused on the parts different from the second embodiment.
 第2実施形態の変形例は、第2エレメント102の下端部の内周側面部と、第3エレメント103の下端部の外周側面部との間の隙間部を塞いで閉塞する構成を、第1下蓋113aに変えて、棚板7側に設けるようにしている。また、第2実施形態の変形例では、第4エレメント104の下端部の開口を塞いで閉塞する構成を、第2下蓋113bに変えて、棚板7側に設けるようにしている。
 図8に示すように、第2実施形態の変形例では、フィルタエレメント100に第1下蓋113a、第2下蓋113bが設けられていない。一方、第2実施形態の変形例では、棚板7に、下蓋113a、113bの役割を果たす構成を設けている。
The modified example of the second embodiment has a configuration in which the gap between the inner peripheral side surface portion of the lower end portion of the second element 102 and the outer peripheral side surface portion of the lower end portion of the third element 103 is closed and closed. Instead of the lower lid 113a, it is provided on the shelf 7 side. Further, in the modification of the second embodiment, the configuration in which the opening of the lower end portion of the fourth element 104 is closed and closed is changed to the second lower lid 113b and provided on the shelf 7 side.
As shown in FIG. 8, in the modification of the second embodiment, the filter element 100 is not provided with the first lower lid 113a and the second lower lid 113b. On the other hand, in the modification of the second embodiment, the shelf plate 7 is provided with a configuration that serves as the lower lids 113a and 113b.
 具体的には、図8、9に示すように、第2実施形態の変形例では、棚板7に、第1エレメント101の下端部の内周側面部と、第2エレメント102の下端部の外周側面部との隙間部と同じ幅寸法の環状(ドーナツ状)の貫通孔7r1が形成されている。また、棚板7には、上記の貫通孔7r1に加えて、第3エレメント103の下端部の内周側面部と、第4エレメント104の下端部の外周側面部との間の隙間部と同じ幅寸法の環状(ドーナツ状)の貫通孔7r2が形成されている。 Specifically, as shown in FIGS. 8 and 9, in the modified example of the second embodiment, on the shelf plate 7, the inner peripheral side surface portion of the lower end portion of the first element 101 and the lower end portion of the second element 102 are provided. An annular (donut-shaped) through hole 7r1 having the same width dimension as the gap with the outer peripheral side surface is formed. In addition to the through hole 7r1 described above, the shelf board 7 has the same gap as the inner peripheral side surface of the lower end of the third element 103 and the outer peripheral side surface of the lower end of the fourth element 104. An annular (doughnut-shaped) through hole 7r2 having a width dimension is formed.
 そして、第2実施形態の変形例の棚板7は、貫通孔7r1の内周側面部と、貫通孔7r2の外周側部との間に、第2エレメント102の下端部の内周側面部と、第3エレメント103の外周側面部との間に隙間部を塞ぐ環状の島部7e1が形成されている。また、第2実施形態の変形例の棚板7は、貫通孔7r2の内周側面部に、第4エレメント104の下端部の開口を塞ぐ円形の島部7e2が設けられている。 The shelf plate 7 of the modified example of the second embodiment has an inner peripheral side surface portion of the lower end portion of the second element 102 between the inner peripheral side surface portion of the through hole 7r1 and the outer peripheral side portion of the through hole 7r2. An annular island portion 7e1 that closes the gap is formed between the outer peripheral side surface portion of the third element 103. Further, the shelf plate 7 of the modified example of the second embodiment is provided with a circular island portion 7e2 that closes the opening of the lower end portion of the fourth element 104 on the inner peripheral side surface portion of the through hole 7r2.
 第2実施形態では、上記の棚板7の構成により、第1エレメント101の内周測面部と、第2エレメント102の外周側面部との間の領域(第2領域)が、貫通孔7r1を介して、ハウジング1の下側エリアA1と連通する。また、第3エレメント103の内周側面部と、第4エレメント104の外周側面部との間の領域(第4領域)が、貫通孔7r2を介して、ハウジング1の下側エリアA1と連通する。
 また、島部7e1は、貫通孔7r1の側面部に、図示しない支持部材により支持されており、第2エレメント102の下端部の内周側面部と、第3エレメント103の下端部の外周側面部との間の隙間部を塞ぎ、第2実施形態の第1下蓋113aと同じ役割を果たしている。
 また、島部7e2は、貫通孔7r2の側面部に、図示しない支持部材により支持されており、第4エレメント104の下端部の開口を塞ぎ、第2実施形態の第2下蓋113bと同じ役割を果たしている。
In the second embodiment, the area (second area) between the inner peripheral surface-measuring portion of the first element 101 and the outer peripheral side surface portion of the second element 102 has the through hole 7r1 due to the configuration of the shelf plate 7 described above. Through the lower area A1 of the housing 1. Further, an area (fourth area) between the inner peripheral side surface of the third element 103 and the outer peripheral side surface of the fourth element 104 communicates with the lower area A1 of the housing 1 via the through hole 7r2. ..
Further, the island portion 7e1 is supported on the side surface portion of the through hole 7r1 by a support member (not shown), and the inner peripheral side surface portion of the lower end portion of the second element 102 and the outer peripheral side surface portion of the lower end portion of the third element 103. It closes the gap between the first and second lower lids 113a and 113b and plays the same role as the first lower lid 113a of the second embodiment.
In addition, the island portion 7e2 is supported by a supporting member (not shown) on the side surface portion of the through hole 7r2, closes the opening of the lower end portion of the fourth element 104, and has the same role as the second lower lid 113b of the second embodiment. Plays.
《第3実施形態》
 次に、本発明の第3実施形態の逆洗型ろ過装置Wについて、図10を参照しながら説明する。ここで、図10は、本発明の第3実施形態の逆洗型ろ過装置を説明するための模式図であり、(a)が第3実施形態と対比させるために示した第1実施形態のフィルタエレメントの模式図であり、(b)が第3実施形態の逆洗型ろ過装置のフィルタエレメントを示した模式図である。
<<Third Embodiment>>
Next, the backwashing type filtration device W of the third embodiment of the present invention will be described with reference to FIG. Here, FIG. 10 is a schematic diagram for explaining the backwashing type filtration device of the third embodiment of the present invention, and of the first embodiment shown in (a) for comparison with the third embodiment. It is a schematic diagram of a filter element, (b) is a schematic diagram which showed the filter element of the backwashing type filtration apparatus of 3rd Embodiment.
 なお、第3実施形態の逆洗型ろ過装置Wは、第1実施形態で用いたフィルタエレメント10を、フィルタエレメント200aに変更しものであり、それ以外の構成は、第1実施形態と同じである。そのため、第2実施形態では、第1実施形態と同じ構成には同じ符号を付している。また、第2実施形態の説明では、第1実施形態と異なる部分を中心に説明する。 The backwashing filtration apparatus W of the third embodiment is the same as the first embodiment except that the filter element 10 used in the first embodiment is changed to a filter element 200a. is there. Therefore, in 2nd Embodiment, the same code|symbol is attached|subjected to the same structure as 1st Embodiment. Also, in the description of the second embodiment, the description will focus on the parts that are different from the first embodiment.
 図10(a)に示す第1実施形態のフィルタエレメント10は、上述したように、従来技術のものと比べて、ろ過面積が大きくできると共に、逆洗機能も維持できるという利点がある。その一方で、第1実施形態のフィルタエレメント10は、「ろ過前の流体」を流入させる「フィルタエレメント10の入口部」の流路の断面積が小さくなっている。
 具体的には、第1実施形態のフィルタエレメント10は、「ろ過前の流体」が、外側エレメント11の下端部の内周測面部と、内側エレメント12の外周側面部の下端部との間の隙間部から流入してくるようになっている。すなわち、第1実施形態のフィルタエレメント10は、従来技術の一重タイプのフィルタエレメント500(図12参照)と比べて、その構造上、「ろ過前の流体」を流入させる「フィルタエレメント10の入口部」の流路の断面積が小さくなっており、入口部分における流速が速くなる現象が生じる。これにより、フィルタエレメント10の下端部側において、ろ過効率の低下を招く虞がある。
As described above, the filter element 10 of the first embodiment shown in FIG. 10(a) has an advantage that the filtration area can be increased and the backwash function can be maintained, as compared with the conventional filter element. On the other hand, in the filter element 10 of the first embodiment, the cross-sectional area of the flow path of the “inlet portion of the filter element 10” into which the “fluid before filtration” flows is small.
Specifically, in the filter element 10 of the first embodiment, the “fluid before filtration” is generated between the inner peripheral measuring surface portion of the lower end portion of the outer element 11 and the lower end portion of the outer peripheral side surface portion of the inner element 12. It is designed to come in through the gap. That is, the filter element 10 of the first embodiment has a structure "inlet part of the filter element 10" into which "fluid before filtration" flows in because of its structure, as compared with the single-type filter element 500 (see FIG. 12) of the related art. The cross-sectional area of the channel is small, and the phenomenon that the flow velocity at the inlet portion becomes fast occurs. As a result, there is a possibility that the lower end side of the filter element 10 may lower the filtration efficiency.
 そのため、図10(b)に示す第3実施形態では、第1実施形態(図10(a)参照)と比べて、内側エレメント212aの長手方向(軸方向)の長さ寸法(ろ材を巻き付けて形成した側面部の長手方向の長さ寸法)を短く形成し、内側エレメント212aの側面部の下端部の位置が外側エレメント11の側面部(ろ材を巻き付けて形成した側面部)の下端部よりも上方側に配置されるようにし(すなわち、内側エレメント212aの下端部が棚板7の上面よりも上方に離間した位置に配置されるようにし)、且つ下端の開口を、逆円錐形に形成された下蓋213aで塞いで、「ろ過前の流体」を流入させる「フィルタエレメント200aの入口部」の流路の断面積を大きく形成するようにした。
 なお、第3実施形態では、第1実施形態と同じ構成には同じ符号を付している。また、第3実施形態の説明では、第1実施形態と異なる部分を中心に説明する。
Therefore, in the third embodiment shown in FIG. 10( b ), the length dimension in the longitudinal direction (axial direction) of the inner element 212 a (when the filter medium is wound around) is larger than that in the first embodiment (see FIG. 10( a )). The length of the formed side surface portion in the longitudinal direction is made shorter, and the position of the lower end portion of the side surface portion of the inner element 212a is lower than that of the side surface portion of the outer element 11 (the side surface portion formed by winding the filter medium). The inner element 212a is arranged on the upper side (that is, the lower end portion of the inner element 212a is arranged at a position separated from the upper surface of the shelf plate 7 above), and the lower end opening is formed in an inverted conical shape. The lower lid 213a is closed to increase the cross-sectional area of the flow path of the "inlet of the filter element 200a" into which the "fluid before filtration" flows.
In the third embodiment, the same components as those in the first embodiment are designated by the same reference numerals. Also, in the description of the third embodiment, the description will focus on the parts that are different from the first embodiment.
 具体的には、第3実施形態のフィルタエレメント200aは、外側エレメント11と、外側エレメント11の筒内に、外側エレメント11と中心軸を同一にして配置され且つ両端が貫通している中空円筒状に形成された内側エレメント(内側フィルタエレメント)212aと、内側エレメント212aの下端部の開口を塞ぐ逆円錐形の下蓋(下端部閉塞部)213aと、フィルタエレメント200aの上端側において外側エレメント11の内周側面部と内側エレメント212aの外周側面部との間に形成された隙間部を塞ぐ環状(ドーナツ状)の上蓋(上端部閉塞部)14とを備えている。 Specifically, the filter element 200a of the third embodiment has a hollow cylindrical shape in which the outer element 11 and the outer element 11 have the same central axis as the outer element 11 and the central axis is the same, and both ends penetrate. Formed on the inner element (inner filter element) 212a, a lower lid (lower end closed portion) 213a of an inverted conical shape that closes the opening of the lower end of the inner element 212a, and the outer element 11 on the upper end side of the filter element 200a An annular (doughnut-shaped) upper lid (upper end portion closing portion) 14 that closes a gap formed between the inner peripheral side surface portion and the outer peripheral side surface portion of the inner element 212a is provided.
 また、外側エレメント11の直径の長さ寸法は、第1実施形態と同様、内側エレメント212aの直径の長さ寸法よりも大きくなっている。また、内側エレメント212aの長手方向の長さ寸法(ろ材を巻き付けて形成した側面部の長手方向の長さ寸法)は、外側エレメント11の長手方向の長さ寸法(ろ材を巻き付けて形成した側面部の長手方向の長さ寸法)よりも小さい寸法に形成されている。
 そして、内側エレメント212aは、上端部の高さ方向の位置が、外側エレメント11の上端部の高さ方向の位置に一致させた状態になるように、上蓋14に取り付けられており、側面部の下端の位置が、外側エレメント11の側面部の下端よりも上方側に配置されている(内側エレメント212aは、その下端の位置が、棚板7の上面よりも上方側に離間した位置に配置されている)。
Further, the length dimension of the diameter of the outer element 11 is larger than the length dimension of the diameter of the inner element 212a, as in the first embodiment. Further, the length dimension in the longitudinal direction of the inner element 212a (the length dimension in the longitudinal direction of the side surface portion formed by winding the filter medium) is the length dimension in the longitudinal direction of the outer element 11 (the side surface portion formed by winding the filter material). Is smaller than the length dimension in the longitudinal direction).
The inner element 212a is attached to the upper lid 14 so that the position of the upper end in the height direction is aligned with the position of the upper end of the outer element 11 in the height direction. The position of the lower end is arranged above the lower end of the side surface portion of the outer element 11 (in the inner element 212a, the position of the lower end thereof is arranged above the upper surface of the shelf plate 7 and at a position above the upper surface of the shelf plate 7). ing).
 また、内側エレメント212aの下端部の開口は、逆円錐形の下蓋(下端部閉塞部)213aにより塞がれて閉塞されている。下蓋213aの上端部の直径の長さ寸法は、内側エレメント212aの直径の長さ寸法と同じになっている。また、下蓋213aは、逆円錐状の頂部が、棚板7の上面の高さと略同じ位置に配置されている(下蓋213aは、逆円錐状の頂部が、外側エレメント11の下端部と同じ位置に配置されている)。 The opening at the lower end of the inner element 212a is closed and closed by an inverted conical lower lid (lower end closing part) 213a. The diameter length dimension of the upper end portion of the lower lid 213a is the same as the diameter length dimension of the inner element 212a. Further, the lower lid 213a is arranged such that the inverted cone-shaped top portion is substantially at the same level as the height of the upper surface of the shelf plate 7 (the lower lid 213a has the inverted cone-shaped top portion and the lower end portion of the outer element 11). Are located in the same position).
 この構成によれば、第1実施形態のフィルタエレメント10(図10(a)参照)と比べて、「ろ過前の流体」を流入させる「フィルタエレメント200aの入口部」の流路の断面積が大きくなり、入口部分における流速が速くなる現象が防止される。その結果、第3実施形態によれば、第1実施形態と同様の作用効果が得られることに加えて、さらに、「ろ過前の流体」の入口部分におけるろ過効率の低下が防止される。 According to this configuration, as compared with the filter element 10 of the first embodiment (see FIG. 10A), the cross-sectional area of the flow path of the “inlet portion of the filter element 200a” into which the “fluid before filtration” flows is smaller. The phenomenon that the flow velocity becomes large and the flow velocity at the inlet portion becomes high is prevented. As a result, according to the third embodiment, in addition to the same operational effect as in the first embodiment, further reduction in filtration efficiency at the inlet portion of the “fluid before filtration” is prevented.
《第3実施形態の変形例》
 次に、第3実施形態の変形例について、図11を参照しながら説明する。ここで、図11は、第3実施形態の逆洗型ろ過装置の変形例を示した模式図であり、(a)が第3実施形態の逆洗型ろ過装置の第1変形例を示した模式図であり、(b)が第3実施形態の逆洗型ろ過装置の第2変形例を示した模式図である。
<<Modification of Third Embodiment>>
Next, a modified example of the third embodiment will be described with reference to FIG. Here, FIG. 11 is a schematic diagram showing a modified example of the backwash type filtering device of the third embodiment, and (a) shows a first modified example of the backwash type filtering device of the third embodiment. It is a schematic diagram and (b) is a schematic diagram showing the 2nd modification of the backwash type filtration device of a 3rd embodiment.
 先ず、第3実施形態の第1変形例について、図11(a)を用いて説明する。
 第3実施形態の第1変形例は、第3実施形態のフィルタ200aの下蓋213aを下蓋213bに変更したものであり、その他の構成は、第3実施形態のものと同じである。
First, a first modified example of the third embodiment will be described with reference to FIG.
In the first modification of the third embodiment, the lower lid 213a of the filter 200a of the third embodiment is changed to a lower lid 213b, and the other configurations are the same as those of the third embodiment.
 具体的には、第3実施形態の第1変形例のフィルタエレメント200bは、図10(b)に示した第3実施形態と同様、外側エレメント11と、外側エレメント11の筒内に、外側エレメント11と中心軸を同一にして配置され且つ両端が貫通している中空円筒状に形成された内側エレメント212aと、フィルタエレメント10の上端側において外側エレメント11の内周側面部と内側エレメント212aの外周側面部との間に形成れた隙間部を塞ぐ環状(ドーナツ状)の上蓋(上端部閉塞部)14とを備えている。
 そして、第3実施形態の変形例では、内側エレメント212aの下端部の開口を塞ぐ下蓋(下端部閉塞部)213bが、逆円錐形ではなく、円板状に形成されている。
Specifically, the filter element 200b of the first modified example of the third embodiment is similar to the third embodiment shown in FIG. 10(b) in the outer element 11 and the outer element 11 inside the cylinder. 11, an inner element 212a formed in the shape of a hollow cylinder having the same central axis as that of the inner element 212a and having both ends penetrating, and the inner peripheral side surface of the outer element 11 and the outer periphery of the inner element 212a on the upper end side of the filter element 10. An annular (doughnut-shaped) upper lid (upper end portion closing portion) 14 that closes a gap portion formed between the side surface portion and the side surface portion is provided.
Further, in the modification of the third embodiment, the lower lid (lower end closing portion) 213b that closes the opening of the lower end of the inner element 212a is formed in a disk shape instead of an inverted conical shape.
 第3実施形態の第1変形例は、上述した第3実施形態と同様、第1実施形態のフィルタエレメント10(図10(a)参照)と比べて、「ろ過前の流体」を流入させる「フィルタエレメント200bの入口部」の流路の断面積が大きくなっている。そのため、第3実施形態の第1変形例によれば、入口部分における流速が速くなる現象が防止され「ろ過前の流体」の入口部分におけるろ過効率が低下することを防止できる。 The first modification of the third embodiment is similar to the above-described third embodiment in that the “fluid before filtration” is introduced as compared with the filter element 10 of the first embodiment (see FIG. 10A). The cross-sectional area of the flow path at the “inlet of the filter element 200b” is large. Therefore, according to the first modification of the third embodiment, it is possible to prevent the phenomenon that the flow velocity at the inlet portion becomes fast and prevent the filtration efficiency at the inlet portion of the “fluid before filtration” from decreasing.
 次に、第3実施形態の第2変形例について、図11(b)を用いて説明する。
 第3実施形態の第2変形例は、フィルタエレメント200cを構成する内側フィルタ212cの形状が、両端が貫通された中空円筒状ではなく、上端が開口していると共に、下端の頂部が閉塞している中空・逆円錐形状になっている。
Next, a second modified example of the third embodiment will be described with reference to FIG.
In the second modified example of the third embodiment, the shape of the inner filter 212c forming the filter element 200c is not a hollow cylindrical shape with both ends penetrating, but the upper end is open and the lower end is closed. It has a hollow and inverted cone shape.
 具体的には、図11(b)に示すように、フィルタエレメント200cは、外側エレメント11と、外側エレメント11の筒内に、外側エレメント11と中心軸を同一にして配置された中空・逆円錐形状の内側エレメント212cと、フィルタエレメント200cの上端側において外側エレメント11の内周側面部と内側エレメント212cの外周側面部との間に形成れた隙間部を塞ぐ環状(ドーナツ状)の上蓋(上端部閉塞部)14とを備えている。 Specifically, as shown in FIG. 11( b ), the filter element 200 c is a hollow/inverted cone in which the central axis of the outer element 11 is the same as that of the outer element 11 in the cylinder of the outer element 11. A ring-shaped (doughnut-shaped) upper lid (upper end) that closes the gap formed between the inner element 212c having a shape and the inner peripheral side surface of the outer element 11 and the outer peripheral side surface of the inner element 212c on the upper end side of the filter element 200c. Part closing part) 14.
 なお、内側エレメント212cは、頂部が下方に配置されており、上端部から下端部に向けて径方向の長さ寸法が小さくなっているとともに、上端部の径方向の長さ寸法が、外側エレメント11の径方向の長さ寸法より小さくなっている。
 また、第3実施形態の第2変形例では、内側エレメント212cの下端部が頂部になっており、開口している形状ではないので、下蓋213a、213bに相当する構成は設けられていない。
In addition, the inner element 212c is arranged such that the top portion is arranged downward, and the length dimension in the radial direction decreases from the upper end portion to the lower end portion, and the radial length dimension of the upper end portion is equal to the outer element. It is smaller than the length dimension of 11 in the radial direction.
Further, in the second modified example of the third embodiment, the lower end of the inner element 212c is the apex and does not have an open shape, so a configuration corresponding to the lower lids 213a and 213b is not provided.
 第3実施形態の第2変形例は、この構成により、上述した第3実施形態と同様、第1実施形態のフィルタエレメント10(図10(a)参照)と比べて、「ろ過前の流体」を流入させる「フィルタエレメント200cの入口部」の流路の断面積が大きくなっている。そのため、第3実施形態の第3変形例によれば、入口部分における流速が速くなる現象が防止され「ろ過前の流体」の入口部分におけるろ過効率が低下することを防止できる。 With this configuration, the second modified example of the third embodiment is similar to the above-described third embodiment in comparison with the filter element 10 of the first embodiment (see FIG. 10A), “fluid before filtration”. The cross-sectional area of the flow path of the "inlet portion of the filter element 200c" through which the air flows is large. Therefore, according to the third modified example of the third embodiment, the phenomenon that the flow velocity at the inlet portion becomes faster can be prevented, and the filtration efficiency at the inlet portion of the “fluid before filtration” can be prevented from decreasing.
 以上説明したように、本実施形態(第1~第3実施形態)によれば、所望のろ過性能が得られると共に、逆洗型ろ過装置Wを小型化できる逆洗型ろ過装置用のフィルタエレメント10、100、200a、200b、200cを提供することができる。また、本実施形態(第1~第3実施形態)によれば、所望のろ過性能が得られると共に、小型化できる逆洗型ろ過装置Wを提供することができる。 As described above, according to the present embodiment (first to third embodiments), a desired filtering performance can be obtained, and the backwash filter apparatus W can be downsized. 10, 100, 200a, 200b, 200c can be provided. Further, according to the present embodiment (first to third embodiments), it is possible to provide the backwashing type filtration device W which can obtain desired filtration performance and can be downsized.
 なお、本発明は、上述した実施形態に限定されるものではなく、その要旨の範囲内において種々の変更が可能である。 The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the gist thereof.
 例えば、上述した第2実施形態では、フィルタエレメント100は、4層のエレメント(第1~第4エレメント)で構成されているが、フィルタエレメントの数が4層より多く設けられていても良い。 For example, in the above-described second embodiment, the filter element 100 is composed of four layers of elements (first to fourth elements), but the number of filter elements may be more than four.
 また、上述した第1実施形態では、内側エレメント(内側フィルタエレメント)12に両端が貫通している中空円筒状に形成されたものを用いて、その下端部の開口を円形板状の下蓋13で塞いでいるが、特にこれに限定されるものではない。
 例えば、内側エレメント12に、上端が開口し且つ下端が閉塞されている中空円筒状に形成されたものを用いるようにしてもよい。すなわち、内側エレメント12の下端部に、予め、下端を閉塞した下端部閉塞部を設けておく。この構成によれば、第1実施形態のように下蓋13を設けたり、或いは、第1実施形態の変形例のように棚板7側に内側エレメント12の下端部の開口を塞ぐ島部7dを設けたりする必要がない。この場合、ノッチワイヤ等のろ材を巻き付けるための枠体には、円形リング状の上側部材と、円形板状の下側部材と、上側部材と下側部材との間に配設された棒状のワイヤ支持材とにより構成されたものを用いると良い(内側エレメント12を構成する枠体自体が、その下端が閉塞された構成になっている)。
Further, in the above-described first embodiment, an inner element (inner filter element) 12 having a hollow cylindrical shape with both ends penetrating is used, and the opening at the lower end thereof is a circular plate-shaped lower lid 13. However, it is not limited to this.
For example, the inner element 12 may have a hollow cylindrical shape with an open upper end and a closed lower end. That is, the lower end portion of the inner element 12 is previously provided with a lower end closing portion that closes the lower end. According to this configuration, the lower lid 13 is provided as in the first embodiment, or the island portion 7d that closes the lower end opening of the inner element 12 on the shelf 7 side as in the modification of the first embodiment. There is no need to provide. In this case, the frame body around which the filter material such as the notch wire is wound includes a circular ring-shaped upper member, a circular plate-shaped lower member, and a rod-shaped wire disposed between the upper member and the lower member. It is preferable to use a member constituted by a supporting material (the frame body forming the inner element 12 has a structure in which its lower end is closed).
 なお、第2実施形態の第4エレメント104についても、上端が開口し且つ下端が閉塞されている中空円筒状に形成されたものを用いるようにしてもよい。
 また、第3実施形態の内側エレメント212a(図10(b)、図11(a))についても、上端が開口し且つ下端が閉塞されている中空円筒状に形成されたものを用いるようにしてもよい。この場合、内側エレメント212aの側面部(ろ材を巻き付けて構成された部分)の長手方向の長さ寸法が、外側エレメント11の側面部(ろ材を巻き付けて構成された部分)の長手方向の長さ寸法よりも小さい寸法に形成されている。そして、ろ材を巻き付けるための枠体の下側部材が、逆円錐形や円板状に形成されている。
The fourth element 104 of the second embodiment may also be a hollow cylinder having an open upper end and a closed lower end.
Also, for the inner element 212a (FIG. 10(b), FIG. 11(a)) of the third embodiment, a hollow cylindrical element having an open upper end and a closed lower end is used. Good. In this case, the length dimension in the longitudinal direction of the side surface portion (portion formed by winding the filter medium) of the inner element 212a is the length of the side surface portion of the outer element 11 (portion formed by winding the filter medium) in the longitudinal direction. The size is smaller than the size. The lower member of the frame body around which the filter medium is wound is formed in an inverted cone shape or a disk shape.
W…逆洗型ろ過装置
1…ハウジング
1a…本体部(ハウジング)
1a1…底部(ハウジング)
1b…蓋体部(ハウジング)
4…装置入口(ハウジング)
5…装置出口(ハウジング)
7…棚板
7a…貫通孔
7b、7b1、7b2…貫通孔
7c…貫通孔
7d、7e1、7e2…島部
7r1、7r2……貫通孔
8…回転軸
9…モータ
10…フィルタエレメント
11…外側エレメント
12…内側エレメント
13…下蓋(フィルタエレメント)
14…上蓋(フィルタエレメント)
14a…開口(フィルタエレメント)
20…逆洗アーム
20a…基部(逆洗アーム)
20b…垂直管(逆洗アーム)
20c、20d…L字管(逆洗アーム)
30…排出管
40…逆洗液排出口

100…フィルタエレメント
101…第1エレメント(第1フィルタエレメント)
102…第2エレメント(第2フィルタエレメント)
103…第3エレメント(第3フィルタエレメント)
104…第4エレメント(第4フィルタエレメント)
113a…第1下蓋(ファイルタエレメント)
113b…第2下蓋(フィルタエレメント)
114a…第1上蓋(フィルタエレメント)
114b…第2上蓋(フィルタエレメント)

200a…フィルタエレメント
212a…内側エレメント(フィルタエレメント)
213a…下蓋(フィルタエレメント)
200b…フィルタエレメント
213b…下蓋(フィルタエレメント)

200c…フィルタエレメント
212c…内側エレメント(フィルタエレメント)
W...Backwash type filtration device 1...Housing 1a...Main body (housing)
1a1... Bottom (housing)
1b... Lid body (housing)
4... Device inlet (housing)
5: Device outlet (housing)
7... Shelf plate 7a... Through holes 7b, 7b1, 7b2... Through hole 7c... Through holes 7d, 7e1, 7e2... Island portions 7r1, 7r2... Through hole 8... Rotating shaft 9... Motor 10... Filter element 11... Outer element 12... Inner element 13... Lower lid (filter element)
14... Top cover (filter element)
14a... Opening (filter element)
20... Backwash arm 20a... Base (backwash arm)
20b... Vertical pipe (backwash arm)
20c, 20d... L-shaped tube (backwash arm)
30... Discharge pipe 40... Backwash liquid discharge port

100... Filter element 101... First element (first filter element)
102...second element (second filter element)
103... Third element (third filter element)
104... Fourth element (fourth filter element)
113a... 1st lower lid (filter element)
113b...second lower lid (filter element)
114a... 1st upper lid (filter element)
114b...second upper lid (filter element)

200a... Filter element 212a... Inner element (filter element)
213a... Lower lid (filter element)
200b... Filter element 213b... Lower lid (filter element)

200c... Filter element 212c... Inner element (filter element)

Claims (8)

  1.  逆洗型ろ過装置に装着され該装置内を流れるろ過前の流体をろ過すると共に、ろ過された流体を利用して逆洗を行う逆洗型ろ過装置用のフィルタエレメントであって、
     両端が貫通している中空円筒状に形成された外側エレメントと、
     前記外側エレメントの筒内に、該外側エレメントと中心軸を同一にして配置された中空円筒状に形成された内側エレメントとを有し、
     前記外側エレメントの径方向の長さ寸法は、前記内側エレメントの径方向の長さ寸法よりも大きくなっており、
     前記内側エレメントは、上端が開口していると共に下端が閉塞された下端部閉塞部になっており、
     その上端部側には、前記外側エレメントの上端部の内周側面部と前記内側エレメントの上端部の外周側面部との間に形成れた隙間部を塞ぐ環状の上蓋が設けられていることを特徴とする逆洗型ろ過装置用のフィルタエレメント。
    A filter element for a backwash type filtration device, which is mounted on a backwash type filtration device and filters a fluid before filtration flowing in the device, and which performs backwashing using the filtered fluid,
    An outer element formed in a hollow cylindrical shape having both ends penetrating,
    In the cylinder of the outer element, an inner element formed in a hollow cylindrical shape having the same central axis as the outer element is arranged,
    The radial length of the outer element is larger than the radial length of the inner element,
    The inner element is a lower end closed portion in which the upper end is open and the lower end is closed,
    On the upper end portion side, an annular upper lid that closes a gap formed between the inner peripheral side surface portion of the upper end portion of the outer element and the outer peripheral side surface portion of the upper end portion of the inner element is provided. A filter element for a characteristic backwash type filtration device.
  2.  前記内側エレメントは、側面部の長手方向の長さ寸法が、前記外側エレメントの側面部の長手方向の長さ寸法よりも小さい寸法に形成されており、
     前記内側エレメントは、その上端部の高さ方向の位置が、前記外側エレメントの上端部の高さ方向の位置に一致した状態になるように、前記上蓋に取り付けられ、その側面部の下端の位置が、前記外側エレメントの側面部の下端よりも上方側に配置され、
     前記下端部閉塞部が逆円錐形に形成されていることを特徴とする請求項1に記載の逆洗型ろ過装置用のフィルタエレメント。
    The inner element is formed such that the longitudinal dimension of the side surface portion is smaller than the longitudinal dimension of the lateral surface portion of the outer element,
    The inner element is attached to the upper lid so that the position of the upper end of the inner element in the height direction coincides with the position of the upper end of the outer element in the height direction. Is disposed above the lower end of the side surface of the outer element,
    The filter element for a backwash type filtering device according to claim 1, wherein the lower end blocking portion is formed in an inverted conical shape.
  3.  前記内側エレメントは、側面部の長手方向の長さ寸法が、前記外側エレメントの側面部の長手方向の長さ寸法よりも小さい寸法に形成されており、
     前記内側エレメントは、その上端部の高さ方向の位置が、前記外側エレメントの上端部の高さ方向の位置に一致した状態になるように、前記上蓋に取り付けられ、その側面部の下端の位置が、前記外側エレメントの側面部の下端よりも上方側に配置され、
     前記下端部閉塞部が略円板状に形成されていることを特徴とする請求項1に記載の逆洗型ろ過装置用フィルタエレメント。
    The inner element is formed such that the longitudinal dimension of the side surface portion is smaller than the longitudinal dimension of the lateral surface portion of the outer element,
    The inner element is attached to the upper lid so that the position of the upper end of the inner element in the height direction coincides with the position of the upper end of the outer element in the height direction. Is disposed above the lower end of the side surface of the outer element,
    The filter element for a backwashing type filtration device according to claim 1, wherein the closing portion of the lower end portion is formed in a substantially disc shape.
  4.  複数のフィルタエレメントを収容した中空筒状のハウジングを備え、該フィルタエレメントにより外部から流入するろ過前の流体のろ過を行いながら、ろ過された流体を用いて順番に該フィルタエレメントの洗浄を行う逆洗型ろ過装置であって、
     前記ハウジング内部を上側エリアと下側エリアの2つのエリアに仕切る棚板と、
     前記ハウジングの下側に形成されて且つろ過前の流体を前記下側エリアに流入させる装置入口と、
     前記ハウジングの上方側に形成され且つ前記上側エリアからろ過された流体を排出させる装置出口と、
     前記ハウジングの中心部に配置され且つ回転自在に形成された回転軸と、
     前記下側エリアに配置され且つ前記回転軸に接続されて該回転軸の回転に伴い動作する逆洗アームとを有し、
     前記棚板には複数の貫通孔が形成され、
     前記フィルタエレメントは、
     両端が貫通している中空円筒状に形成された外側エレメントと、
     前記外側エレメントの筒内に、該外側エレメントと中心軸を同一にして配置された中空円筒状に形成された内側エレメントと、
     前記外側エレメントの上端部の内周側面部と前記内側エレメントの上端部の外周側面部との間に形成れた隙間部を塞ぐ環状に形成された上端部閉塞部とを有し、
     前記外側エレメントの径方向の長さ寸法は、前記内側エレメントの径方向の長さ寸法よりも大きくなっており、
     前記内側エレメントは、上端が開口していると共に下端が閉塞された下端部閉塞部になっており、
     さらに、前記フィルタエレメントは、前記外側エレメントの内周側面部が、前記棚板の貫通孔の内周側面部と面一になるように位置決めされ、その下端部が該棚板の上面に固定され、
     前記逆洗アームは、その一端部が前記棚板の下端面に当接しながら移動し、前記複数の貫通孔のいずれかに接続され、該接続した貫通孔の位置に固定されている前記フィルタエレメントの筒内と連通するようになっていることを特徴とする逆洗型ろ過装置。
    A hollow cylindrical housing containing a plurality of filter elements is provided, and while filtering the fluid that flows from the outside before filtration with the filter elements, the filtered fluid is used to sequentially wash the filter elements. A washing filter device,
    A shelf board that partitions the inside of the housing into two areas, an upper area and a lower area,
    A device inlet formed on the lower side of the housing and allowing the unfiltered fluid to flow into the lower area;
    A device outlet formed on the upper side of the housing and for discharging filtered fluid from the upper area;
    A rotating shaft disposed in the center of the housing and rotatably formed;
    A backwash arm that is disposed in the lower area and is connected to the rotary shaft and that operates with rotation of the rotary shaft;
    A plurality of through holes are formed in the shelf board,
    The filter element is
    An outer element formed in a hollow cylindrical shape having both ends penetrating,
    In the cylinder of the outer element, an inner element formed in the shape of a hollow cylinder and having the same central axis as the outer element,
    An inner peripheral side surface portion of the upper end portion of the outer element and an outer peripheral side surface portion of the upper end portion of the inner element, and an annular upper end portion closing portion that closes a gap formed between the inner element and the outer element,
    The radial length of the outer element is larger than the radial length of the inner element,
    The inner element is a lower end closed portion in which the upper end is open and the lower end is closed,
    Further, the filter element is positioned such that an inner peripheral side surface portion of the outer element is flush with an inner peripheral side surface portion of the through hole of the shelf board, and a lower end portion thereof is fixed to an upper surface of the shelf board. ,
    The backwash arm moves while one end of the backwash arm contacts the lower end surface of the shelf plate, is connected to any of the plurality of through holes, and is fixed at the position of the connected through hole. A backwash type filtration device, which is characterized in that it communicates with the inside of the cylinder.
  5.  前記フィルタエレメントは、前記貫通孔を介して逆洗アームが接続されていない状態の場合には、
     前記装置入口から流入したろ過前の流体が前記貫通孔を介して、前記外側エレメントの下端部の内周測面部と、前記内側エレメントの下端部の外周側面部との間の隙間部から、該外側エレメントの内周測面部と、該内側エレメントの外周側面部との間の第1領域に流入し、
     前記第1領域に流入してきたろ過前の流体は、その一部が、前記外側エレメントの内周側面部から外周側面部を通過してろ過され、前記フィルタエレメントの外側の前記上側エリアに流出し、
     前記第1領域に流入してきたろ過前の流体は、その他部が、前記内側エレメントの外周側面部から内周側面部を通過してろ過され、前記内側エレメントの上端部の開口を通って、前記フィルタエレメントの外側の前記上側エリアに流出することを特徴とする請求項4に記載のろ過装置。
    The filter element, when the backwash arm is not connected via the through hole,
    The unfiltered fluid that has flowed in from the inlet of the device passes through the through-hole, from the gap between the inner peripheral surface section of the lower end of the outer element and the outer peripheral side surface of the lower end of the inner element, Flowing into the first region between the inner peripheral surface measuring portion of the outer element and the outer peripheral side surface portion of the inner element,
    A part of the unfiltered fluid that has flowed into the first region is filtered by passing from the inner peripheral side surface portion of the outer element to the outer peripheral side surface portion, and flows out to the upper area outside the filter element. ,
    The unfiltered fluid that has flowed into the first region is filtered with the other portion passing from the outer peripheral side surface portion of the inner element to the inner peripheral side surface portion thereof, and passing through the opening of the upper end portion of the inner element, 5. Filtration device according to claim 4, characterized in that it flows out to the upper area outside the filter element.
  6.  前記フィルタエレメントは、前記貫通孔を介して逆洗アームが接続された場合には、
     前記フィルタエレメントの下端部が該逆洗アームにより塞がれてろ過前の流体の流入が止まり、
     前記内側エレメントの上端部の開口から該内側エレメントの筒内に、前記上側エリアのろ過された流体が流入し、前記筒内に流入してき流体が、該内側エレメントの内周側面部から外周側面部を通過して前記第1領域に流入して該内側エレメントの逆洗処理が行われ、
     さらに、前記上側エリアのろ過された流体が前記外側エレメンの外周側面部から内周側面部を通過して前記第1領域に流入して該外側エレメントの逆洗処理が行われ、
     前記第1領域に流入してきた流体が前記逆洗アームを介して排出されていくことを特徴とする請求項5に記載の逆洗型ろ過装置。
    The filter element, when the backwash arm is connected through the through hole,
    The lower end of the filter element is closed by the backwash arm to stop the inflow of fluid before filtration,
    The filtered fluid in the upper area flows into the cylinder of the inner element from the opening of the upper end of the inner element, and the fluid that flows into the cylinder changes from the inner peripheral side surface portion to the outer peripheral side surface portion of the inner element. To flow into the first region to undergo backwashing of the inner element,
    Further, the filtered fluid in the upper area passes through the inner peripheral side surface portion from the outer peripheral side surface portion of the outer element to flow into the first region to perform backwashing treatment of the outer element,
    The backwashing type filtration apparatus according to claim 5, wherein the fluid that has flowed into the first region is discharged through the backwashing arm.
  7.  複数のフィルタエレメントを収容した中空筒状のハウジングを備え、該フィルタエレメントにより外部から流入するろ過前の流体のろ過を行いながら、ろ過された流体を用いて順番に該フィルタエレメントの洗浄を行う逆洗型ろ過装置であって、
     前記ハウジング内部を上側エリアと下側エリアの2つのエリアに仕切る棚板と、
     前記ハウジングの下方側に形成されて且つろ過前の流体を前記下側エリアに流入させる装置入口と、
     前記ハウジングの上方側に形成され且つ前記上側エリアからろ過された流体を排出させる装置出口と、
     前記ハウジングの中心部に配置され且つ回転自在に形成された回転軸と、
     前記下側エリアに配置され且つ前記回転軸に接続されて該回転軸の回転に伴い動作する逆洗アームとを有し、
     前記棚板には複数の貫通孔が形成され、
     前記フィルタエレメントは、
     両端が貫通している中空円筒状に形成された外側エレメントと、
     前記外側エレメントの筒内に、該外側エレメントと中心軸を同一にして配置された中空・逆円錐形状の内側エレメントと、
     前記外側エレメントの上端部の内周側面部と前記内側エレメントの上端部の外周側面部との間に形成れた隙間部を塞ぐ環状に形成された上端部閉塞部とを有し、
     前記内側エレメントは、頂部が下方に配置されており且つ上端部が開口しており、上端部から下端部に向けて径方向の長さ寸法が小さくなっているとともに、該上端部の径方向の長さ寸法が、前記外側エレメントの径方向の長さ寸法より小さくなっており、
     さらに、前記フィルタエレメントは、前記外側エレメントの内周側面部が、前記棚板の貫通孔の内周側面部と面一になるように位置決めされ、その下端部が該棚板の上面に固定され、
     前記逆洗アームは、その一端部が前記棚板の下端面に当接しながら移動し、前記複数の貫通孔のいずれかに接続され、該接続した貫通孔の位置に固定されている前記フィルタエレメントの筒内と連通するようになっていることを特徴とする逆洗型ろ過装置。
    A hollow cylindrical housing containing a plurality of filter elements is provided, and while filtering the fluid that flows from the outside before filtration with the filter elements, the filtered fluid is used to sequentially wash the filter elements. A washing filter device,
    A shelf board that partitions the inside of the housing into two areas, an upper area and a lower area,
    A device inlet formed on the lower side of the housing and allowing a fluid before filtration to flow into the lower area;
    A device outlet formed on the upper side of the housing and for discharging filtered fluid from the upper area;
    A rotating shaft disposed in the center of the housing and rotatably formed;
    A backwash arm that is disposed in the lower area and is connected to the rotary shaft and that operates with rotation of the rotary shaft;
    A plurality of through holes are formed in the shelf board,
    The filter element is
    An outer element formed in a hollow cylindrical shape having both ends penetrating,
    In the cylinder of the outer element, a hollow inner cone-shaped inner element arranged with the same central axis as the outer element,
    An inner peripheral side surface portion of the upper end portion of the outer element and an outer peripheral side surface portion of the upper end portion of the inner element, and an annular upper end portion closing portion that closes a gap formed between the inner element and the outer element,
    The inner element has a top portion arranged downward and an upper end portion opened, and the length dimension in the radial direction decreases from the upper end portion to the lower end portion, and The length dimension is smaller than the radial dimension of the outer element,
    Further, the filter element is positioned such that an inner peripheral side surface portion of the outer element is flush with an inner peripheral side surface portion of the through hole of the shelf board, and a lower end portion thereof is fixed to an upper surface of the shelf board. ,
    The backwash arm moves while one end of the backwash arm contacts the lower end surface of the shelf plate, is connected to any of the plurality of through holes, and is fixed at the position of the connected through hole. A backwash type filtration device, which is characterized in that it communicates with the inside of the cylinder.
  8.  複数のフィルタエレメントを収容した中空筒状のハウジングを備え、該フィルタエレメントにより外部から流入するろ過前の流体のろ過を行いながら、ろ過された流体を用いて順番に該フィルタエレメントの洗浄を行う逆洗型ろ過装置であって、
     前記ハウジング内部を上側エリアと下側エリアの2つのエリアに仕切る棚板と、
     前記ハウジングの下方側に形成されて且つろ過前の流体を前記下側エリアに流入させる装置入口と、
     前記ハウジングの上方側に形成され且つ前記上側エリアからろ過された流体を排出させる装置出口と、
     前記ハウジングの中心部に配置され且つ回転自在に形成された回転軸と、
     前記下側エリアに配置され且つ前記回転軸に接続されて該回転軸の回転に伴い動作する逆洗アームとを有し、
     前記棚板には複数の貫通孔が形成され、
     前記フィルタエレメントは、
     両端が貫通している中空円筒状に形成された第1エレメントと、
     前記第1エレメントの筒内に、該第1エレメントと中心軸を同一にして配置され且つ両端が貫通している中空円筒状に形成された第2エレメントと、
     前記第2エレメントの筒内に、該第2エレメントと中心軸を同一にして配置され且つ両端が貫通している中空円筒状に形成された第3エレメントと、
     前記第3エレメントの筒内に、該第3エレメントと中心軸を同一にして配置され且つ中空円筒状に形成された第4エレメントと、
     前記第2エレメントの下端部の内周側面部と前記第3エレメントの下端部の外周側面部との間に形成れた隙間部を塞ぐ環状の第1下端部閉塞部と、
     前記第1エレメントの上端部の内周側面部と、前記第2エレメントの上端部の外周側面部との間に形成れた隙間部を塞ぐ環状の第1上端部閉塞部と、
     前記第3エレメントの上端部の内周側面部と、前記第4エレメントの上端の外周側面部との間に形成れた隙間部を塞ぐ環状の第2上端部閉塞部とを有し、
     前記第4エレメントは、上端が開口していると共に下端が閉塞されており、
     前記第1エレメントの径方向の長さ寸法は、前記第2エレメントの径方向の長さ寸法よりも大きくなっており、前記第2エレメントの径方向の長さ寸法は、前記第3エレメントの径方向の長さ寸法よりも大きくなっており、前記第3エレメントの径方向の長さ寸法は、前記第4エレメントの径方向の長さ寸法よりも大きくなっており、
     前記フィルタエレメントは、前記第1エレメントの内周側面部が、前記棚板の貫通孔の内周側面部と面一になるように位置決めされ、その下端部が該棚板の上面に固定され、
     前記逆洗アームは、その一端部が前記棚板の下端面に当接しながら移動し、前記複数の貫通孔のいずれかに接続され、該接続した貫通孔の位置に固定されている前記フィルタエレメントの筒内と連通するようになっていることを特徴とする逆洗型ろ過装置。
    A hollow cylindrical housing containing a plurality of filter elements is provided, and while filtering the fluid that flows from the outside before filtration with the filter elements, the filtered fluid is used to sequentially wash the filter elements. A washing filter device,
    A shelf board that partitions the inside of the housing into two areas, an upper area and a lower area,
    A device inlet formed on the lower side of the housing and allowing a fluid before filtration to flow into the lower area;
    A device outlet formed on the upper side of the housing and for discharging filtered fluid from the upper area;
    A rotating shaft disposed in the center of the housing and rotatably formed;
    A backwash arm that is disposed in the lower area and is connected to the rotary shaft and that operates with rotation of the rotary shaft;
    A plurality of through holes are formed in the shelf board,
    The filter element is
    A first element formed in a hollow cylindrical shape having both ends penetrating,
    A second element, which is arranged in the cylinder of the first element and has the same central axis as that of the first element, and which is formed in a hollow cylindrical shape with both ends passing through;
    A third element, which is arranged in the cylinder of the second element and has the same central axis as the second element, and which has a hollow cylindrical shape and has both ends penetrating therethrough;
    A fourth element, which is arranged in the cylinder of the third element and has the same central axis as the third element, and which is formed in a hollow cylindrical shape;
    An annular first lower end closing portion that closes a gap formed between an inner peripheral side surface portion of the lower end portion of the second element and an outer peripheral side surface portion of the lower end portion of the third element,
    An annular first upper end closing portion that closes a gap formed between an inner peripheral side surface portion of the upper end portion of the first element and an outer peripheral side surface portion of the upper end portion of the second element;
    An inner peripheral side surface portion of an upper end portion of the third element, and an annular second upper end portion closing portion that closes a gap portion formed between an outer peripheral side surface portion of an upper end portion of the fourth element,
    The fourth element has an open upper end and a closed lower end,
    The radial length of the first element is larger than the radial length of the second element, and the radial length of the second element is the radial length of the third element. Is larger than the length dimension in the direction, and the length dimension in the radial direction of the third element is larger than the length dimension in the radial direction of the fourth element,
    The filter element is positioned such that an inner peripheral side surface portion of the first element is flush with an inner peripheral side surface portion of the through hole of the shelf plate, and a lower end portion thereof is fixed to an upper surface of the shelf plate,
    The backwash arm moves while one end of the backwash arm contacts the lower end surface of the shelf plate, is connected to any of the plurality of through holes, and is fixed at the position of the connected through hole. A backwash type filtration device, which is characterized in that it communicates with the inside of the cylinder.
PCT/JP2019/038869 2018-12-05 2019-10-02 Filter element for backwash filtering device, and backwash filtering device WO2020116009A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4863377U (en) * 1971-11-15 1973-08-11
JP2001046811A (en) * 1999-08-06 2001-02-20 Mitsubishi Rayon Co Ltd Filtering filter and filter apparatus
JP2001198411A (en) * 2000-01-21 2001-07-24 Matsushita Electric Ind Co Ltd Laminated filter
JP2014530099A (en) * 2011-10-14 2014-11-17 パンアジア カンパニー リミテッド Multi-cage type ballast water filtration device and method for automatically controlling sequential backwashing
WO2017010144A1 (en) * 2015-07-10 2017-01-19 神奈川機器工業株式会社 Filter element, backwashing-type filtration device, method for filtering using filter element, and method for backwashing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4863377U (en) * 1971-11-15 1973-08-11
JP2001046811A (en) * 1999-08-06 2001-02-20 Mitsubishi Rayon Co Ltd Filtering filter and filter apparatus
JP2001198411A (en) * 2000-01-21 2001-07-24 Matsushita Electric Ind Co Ltd Laminated filter
JP2014530099A (en) * 2011-10-14 2014-11-17 パンアジア カンパニー リミテッド Multi-cage type ballast water filtration device and method for automatically controlling sequential backwashing
WO2017010144A1 (en) * 2015-07-10 2017-01-19 神奈川機器工業株式会社 Filter element, backwashing-type filtration device, method for filtering using filter element, and method for backwashing

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