CN106731105B - Open type self-cleaning pre-pump filter and impurity filtering method - Google Patents
Open type self-cleaning pre-pump filter and impurity filtering method Download PDFInfo
- Publication number
- CN106731105B CN106731105B CN201611180112.5A CN201611180112A CN106731105B CN 106731105 B CN106731105 B CN 106731105B CN 201611180112 A CN201611180112 A CN 201611180112A CN 106731105 B CN106731105 B CN 106731105B
- Authority
- CN
- China
- Prior art keywords
- filter screen
- cylindrical filter
- rotating shaft
- water
- cylindrical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 69
- 239000012535 impurity Substances 0.000 title claims abstract description 36
- 238000001914 filtration Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 123
- 239000007921 spray Substances 0.000 claims abstract description 53
- 238000005406 washing Methods 0.000 claims abstract description 42
- 239000010865 sewage Substances 0.000 claims abstract description 20
- 238000002955 isolation Methods 0.000 claims description 35
- 239000013013 elastic material Substances 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 18
- 238000003973 irrigation Methods 0.000 description 7
- 230000002262 irrigation Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000011001 backwashing Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 208000034699 Vitreous floaters Diseases 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- -1 organic organisms Substances 0.000 description 1
- 230000003094 perturbing effect Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009287 sand filtration Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters 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
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
Abstract
The invention relates to the technical field of filtering equipment, in particular to an open type self-cleaning pre-pump filter and an impurity filtering method. The device comprises a frame, a cylinder filter screen, a cleaning mechanism, a disturbance device and a driving mechanism; the cylinder filter screen is fixedly arranged on the frame; the wiper mechanism includes: a hollow rotating shaft and a spray washing pipe; the hollow rotating shaft can be rotatably arranged on the cylindrical filter screen; the spray washing pipe is arranged in the cylindrical filter screen and communicated with the hollow rotating shaft; the spray washing pipe is provided with a nozzle; the disturbing device is fixedly arranged on the hollow rotating shaft, is positioned on the outer side of the cylindrical filter screen, is arranged corresponding to the spray washing pipe, and is driven by the hollow rotating shaft to synchronously rotate with the spray washing pipe; one end of the cylinder filter screen is provided with a water outlet; the driving mechanism is used for driving the hollow rotating shaft to rotate. The invention has good self-cleaning effect, good filtering effect on sewage and high filtering efficiency of the filter.
Description
Technical Field
The invention relates to the technical field of filtering equipment, in particular to an open type self-cleaning pre-pump filter and an impurity filtering method.
Background
With the increasing population and the shortage of water resources in the world, more and more crops and trees in regions are gradually irrigated by adopting a drip irrigation technology, the drip irrigation tape has strict requirements on the allowable impurity content ratio of water, the filter can be used only when the filtering precision of the filter on the water quality reaches a certain standard, and otherwise the drip irrigation tape can be blocked.
At the present stage, two main ways of filtering surface water for agricultural irrigation with high impurity content are natural precipitation combined with sand filtration (medium filtration) and/or net filtration. The natural sedimentation requires a certain time to enable sundries such as soil, sand grains, mineral debris and the like with specific gravity larger than that of water to be sedimented at the bottom of the water pool, so that the water consumption cannot be met when a large amount of agricultural water is needed in summer, and substances such as organic organisms, plastic films, algae and the like suspended in the water and with specific gravity smaller than that of the water cannot be effectively removed; the sandstone medium filtering equipment is generally combined with a screen filter on the basis of natural sedimentation of a pressure container, but the energy consumption loss is large, and the self-cleaning effect is not ideal. The self-cleaning type automatic back-flushing net filter based on the negative pressure principle filters water under a closed condition, but a closed pressure container has the limitations of limited capacity and maximum tolerance on the content of impurities in water, and the efficiency of filtering and treating water is greatly influenced by the content of impurities in water. The higher the impurity content in the water, the lower the filtration efficiency. Under the prior art condition, for the net type self-cleaning filter, when the impurity content in water is higher than a certain amount, the self-cleaning effect is not ideal, frequent backwashing is needed, and the irrigation efficiency is greatly reduced. Especially in the flood outbreak season, the impurity content of surface water is very high usually, and at this moment, the filter is very easy to be paralyzed, brings huge loss to agricultural production.
Disclosure of Invention
In view of this, the present invention provides an open type self-cleaning pre-pump filter and a method for filtering impurities, and mainly aims to improve the self-cleaning and filtering effects of the filter and improve the filtering efficiency of the filter.
In order to achieve the purpose, the invention mainly provides the following technical scheme:
in one aspect, embodiments of the present invention provide an open self-cleaning pre-pump filter comprising a frame, a cylindrical screen, a cleaning mechanism, a perturbation device, and a drive mechanism;
the cylindrical filter screen is arranged on the rack and is fixedly connected with the rack;
the cleaning mechanism can be rotatably arranged on the cylindrical filter screen; the cleaning mechanism includes: a hollow rotating shaft and a spray washing pipe;
the hollow rotating shaft is rotatably arranged on the cylindrical filter screen and is coaxial with the cylindrical filter screen;
one or more spray washing pipes are arranged; the spray washing pipe is arranged inside the cylinder filter screen; the spray washing pipe is fixedly arranged on the hollow rotating shaft and is communicated with the hollow rotating shaft; the spray pipe is provided with a nozzle along the axial direction of the cylindrical filter screen and is used for spraying pressurized water to the cylindrical filter screen;
one end of the hollow rotating shaft is provided with a water inlet which is used for providing pressurized water for the spray washing pipe;
the disturbance device is fixedly arranged on the hollow rotating shaft, is positioned on the outer side of the cylindrical filter screen, is arranged corresponding to the spray pipe, and is driven by the hollow rotating shaft to synchronously rotate with the spray pipe;
one end of the cylindrical filter screen is provided with a water outlet for sucking out filtered water;
the driving mechanism is arranged on the rack and used for driving the hollow rotating shaft to rotate.
Further, the perturbation device comprises: a perturbation member and a pilot member;
the disturbing component is fixedly connected with the hollow rotating shaft; said disturbing member having an end portion near said cylindrical screen, said end portion being parallel to an outer wall of said cylindrical screen;
the pilot component is fixedly connected with the hollow rotating shaft and is arranged in front of the disturbing component along the rotating direction; the pilot member has one end near the cylinder screen, the one end of the pilot member being parallel to the outer wall of the cylinder screen;
a gap is provided between the pilot member and the perturbation member.
Further, the disturbing component is of a groove structure; the groove structure is arranged along the axial direction of the cylinder filter screen; the openings of the groove structures face the cylinder filter screen.
Further, the cleaning mechanism further comprises: a negative pressure isolation member;
the negative pressure isolation component is fixedly arranged on the spray washing pipe and is arranged on two sides of the spray nozzle along the distribution direction of the spray nozzle; the opening of the negative pressure isolation member faces the ejection direction of the ejection port.
Further, a gap between the perturbation member and the pilot member and an opening of the negative pressure isolation member are disposed opposite.
Furthermore, the outer side of the nozzle is a linear gap, and the inner side of the nozzle is a circular through hole; the circular through hole is communicated with the linear gap; the width of the linear gap is not larger than the diameter of the circular through hole.
Further, the method also comprises the following steps: a water pump;
a water inlet pipe of the water pump is communicated with the water outlet and is used for pumping filtered water;
and the water outlet pipe of the water pump is communicated with the water inlet and is used for providing pressurized water for the spray washing pipe through the hollow rotating shaft.
Further, a flexible component is arranged between the disturbance device and the cylinder filter screen; the flexible member is disposed on the perturbation member and/or the pilot member at an end proximate to the cylindrical screen;
the negative pressure isolation component is provided with an elastic material; the elastic material is disposed between the negative pressure isolation member and the cylindrical screen.
In another aspect, an embodiment of the present invention provides an impurity filtering method, including the following steps:
the cylindrical filter screen is vertically arranged in the sewage, and the sewage flows from the outside of the cylindrical filter screen to the inside of the cylindrical filter screen;
the opening of the negative pressure isolation component and the opening of the disturbance component are arranged oppositely, and a closed space is formed inside and outside the cylindrical filter screen; the cleaning mechanism arranged in the cylindrical filter screen and the disturbance device arranged outside the cylindrical filter screen are driven to synchronously rotate;
providing pressurized water to the cleaning mechanism; the pressurized water is sprayed to the cylindrical filter screen from the nozzle so as to wash away impurities on the outer wall of the cylindrical filter screen; a dynamic isolation area is formed between the negative pressure isolation component and the cylindrical filter screen and is used for protecting water sprayed from the nozzle from being influenced by water flow flowing into the cylindrical filter screen; meanwhile, when the disturbance device moves circularly, the sewage is driven to rotate, so that impurities in the sewage are far away from the cylindrical filter screen under the action of centrifugal force; when the disturbing device rotates, a dynamic negative pressure area is formed between the disturbing device and the cylinder filter screen; the dynamic negative pressure region corresponds to the dynamic isolation region, so that the internal and external pressure difference of the cylindrical filter screen is changed, and impurities are separated from the cylindrical filter screen; the separated impurities are flushed into a disturbance device for collection or are intensively led out by adopting other modes;
the cleaning water flowing into the cylinder filter screen is sucked out, and the sewage is filtered.
Further, the method adopts any one of the open type self-cleaning pre-pump filters to carry out filtering operation.
By means of the technical scheme, the open type self-cleaning pre-pump filter provided by the invention at least has the following advantages:
the self-cleaning effect of the filter is good, the filtering effect on sewage is good, and the filtering efficiency of the filter is high.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to make the technical solutions of the present invention practical in accordance with the contents of the specification, the following detailed description is given of preferred embodiments of the present invention with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic illustration of an open self-cleaning pre-pump filter operating condition provided by an embodiment of the present invention;
FIG. 2 is a schematic combined front view of a cylinder screen, cleaning mechanism and agitation apparatus of an open self-cleaning pre-pump filter according to an embodiment of the present invention;
FIG. 3 is a top view of a combination of a cylinder screen, a cleaning mechanism and a perturbation device of an open self-cleaning pre-pump filter according to an embodiment of the present invention;
FIG. 4 is a schematic top view of another embodiment of a combination of a cylinder screen, a cleaning mechanism, and a perturbation device of an open self-cleaning pre-pump filter according to an embodiment of the present invention;
FIG. 5 is a schematic top view of yet another embodiment of a combination of a cylinder screen, a cleaning mechanism, and a perturbation device for an open self-cleaning pre-pump filter in accordance with an embodiment of the present invention.
Shown in the figure:
1 is a water pool, 2 is a frame, 3 is a driving mechanism, 4 is a cleaning mechanism, 4-1 is a hollow rotating shaft, 4-11 is a water inlet, 4-2 is a spray pipe, 4-3 is a negative pressure isolation component, 4-31 is an elastic material, 5 is a water pump, 6 is a disturbance device, 6-1 is a disturbance component, 6-2 is a flexible component, 6-3 is a guide component, 7 is a cylindrical filter screen, 7-1 is an upper end cover, 7-2 is a filter screen body, 7-3 is a lower end cover, 7-4 is a water outlet, 8 is a driving wheel, 9 is a water outlet pipe, and 10 is a water inlet pipe.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the predetermined object, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In one aspect, as shown in fig. 1-3, embodiments of the present invention provide an open self-cleaning pre-pump filter comprising a frame 2, a cylindrical screen 7, a cleaning mechanism 4, a perturbation device 6, and a drive mechanism 3;
the frame 2 is a frame structure and is formed by welding or assembling formed steel.
The cylindrical filter screen 7 is arranged on the frame 2 and is fixedly connected with the frame 2; the cylindrical filter screen 7 is arranged on the frame 2; in the embodiment, the cylinder filter screen 7 is preferably detachably connected to the frame 2 through fasteners such as bolts and screws, so that subsequent disassembly and maintenance are facilitated; this embodiment does not, of course, exclude the cylinder screen 7 being welded to the frame 2 in order to make the connection reliable. In the working state, the cylindrical filter screen 7 is placed in the water tank 1 and is surrounded by sewage, but the upper end of the cylindrical filter screen 7 needs to be exposed out of the water surface.
The cylinder screen 7 includes: the filter screen comprises a filter screen body 7-2, an upper end cover 7-1 and a lower end cover 7-3; the filter screen body 7-2 is formed by welding steel plates in a curling manner; the upper end cover 7-1 is fixedly arranged at the upper end of the filter screen body 7-2, and preferably, the upper end cover 7-1 is fixedly connected with the upper end of the filter screen body 7-2 through a bolt in the embodiment; the lower end cover 7-3 is fixedly arranged at the lower end of the filter screen body 7-2. During operation, the filter is suspended in water, and the upper end cover 7-1 can be suspended above the water surface, so that the upper end cover 7-1 can be selected as a non-sealing element, and the processing cost can be reduced.
The cleaning mechanism 4 is rotatably arranged on the cylinder filter screen 7; the cleaning mechanism 4 includes: a hollow rotating shaft 4-1 and a spray washing pipe 4-2;
the hollow rotating shaft 4-1 is rotatably arranged on the cylindrical filter screen 7 and is coaxial with the cylindrical filter screen 7; in the embodiment, the hollow rotating shaft 4-1 is preferably rotatably arranged on the upper end cover 7-1 and is coaxial with the filter screen body 7-2; further, the hollow rotating shaft 4-1 is connected with the upper end cover 7-1 through a bearing, so that the hollow rotating shaft 4-1 can rotate relative to the upper end cover 7-1; further, the hollow rotating shaft 4-1 is connected with the upper end cover 7-1 through a self-aligning bearing. It is of course not excluded that the hollow shaft 4-1 is connected to the upper end cap 7-1 via a nylon sleeve.
The upper end of the hollow rotating shaft 4-1 is fixedly provided with a driving wheel 8, and in the embodiment, the driving wheel 8 is preferably connected with the hollow rotating shaft 4-1 through welding; certainly, the driving wheel 8 is not excluded from being sleeved on the hollow rotating shaft 4-1 and fixed through a pin shaft or a bolt.
The driving wheel 8 is in transmission connection with the driving mechanism 3, preferably, the driving wheel 8 and the driving mechanism 3 are in transmission through a chain, and the transmission is reliable; in the embodiment, the driving mechanism 3 is preferably a motor, so that the cost is low and the control is convenient; the use of hydraulic motors is of course not excluded. The drive mechanism 3 is preferably fixed on the cover plate in the embodiment, but may be fixed on other suitable positions of the frame 2.
One or more spray washing pipes 4-2; the spray washing pipe 4-2 is arranged inside the cylindrical filter screen 7; the spray washing pipe 4-2 is fixedly arranged on the hollow rotating shaft 4-1 and is communicated with the hollow rotating shaft 4-1; in the present embodiment, it is preferable that the plurality of spray pipes 4-2 are provided, and the plurality of spray pipes 4-2 are uniformly distributed on the hollow rotating shaft 4-1 along the rotating direction of the hollow rotating shaft 4-1. In the embodiment, the hollow rotating shaft 4-1 is preferably of a cylindrical tubular structure, so that materials are convenient to obtain, and the rotation is stable and reliable; of course, the hollow rotating shaft 4-1 can also be in a polygonal prism structure, and is easy to connect and communicate with the spray washing pipe 4-2.
A nozzle is arranged on the spray washing pipe 4-2 along the axial direction of the cylindrical filter screen 7 and is used for spraying pressurized cleaning water to the cylindrical filter screen 7; the water ejected from the nozzle needs to be faster, requiring higher water pressure in the spray pipe 4-2.
One end of the hollow rotating shaft 4-1 is provided with a water inlet 4-11 for providing pressurized water for the spray washing pipe 4-2; the water inlet 4-11 is in communication with the water outlet pipe 9 of the water pump 5 to provide pressurized rinse water to the spray wash pipe 4-2 via the hollow rotating shaft 4-1.
The disturbing device 6 is fixedly arranged on the hollow rotating shaft 4-1, is positioned on the outer side of the cylindrical filter screen 7, is arranged corresponding to the spray washing pipe 4-2, and is driven by the hollow rotating shaft 4-1 to synchronously rotate with the spray washing pipe 4-2; in the embodiment, the disturbing device 6 is preferably welded on the hollow rotating shaft 4-1 so as to ensure reliable connection;
the disturbing device 6 and the spray washing pipe 4-2 do circular motion together through the hollow rotating shaft 4-1, so that a dynamic negative pressure area is formed between the disturbing component 6-1 and the cylindrical filter screen 7, the washing effect of the spray washing pipe 4-2 on the cylindrical filter screen 7 is improved, and the self-cleaning effect of the filter is further improved.
The spraying direction of the spray washing pipe 4-2 points to the opening of the disturbing component 6-1; a gap is arranged between the disturbing component 6-1 and the cylinder filter screen 7; in this embodiment, the distance between the opening of the disturbing member 6-1 and the outer wall of the cylindrical screen 7 is preferably 1mm to 10mm, and the disturbing member 6-1 is kept close to the cylindrical screen 7 without interfering with the cylindrical screen 7 to increase the effect of generating a dynamic negative pressure zone with the cylindrical screen 7 during rotation, thereby improving the self-cleaning effect.
One end of the cylindrical filter screen 7 is provided with a water outlet 7-4 for sucking out filtered water; in the embodiment, the water outlet 7-4 is preferably arranged on the lower end cover 7-3 and is used for flowing out filtered clean water; the water outlet 7-4 is communicated with a water inlet pipe 10 of the water pump 5, so that the water pump 5 can suck the filtered cleaning water. The water pump 5 can be arranged on the frame 2 for convenient control; it is of course not excluded that the water pump 5 is arranged in other safe positions.
The driving mechanism 3 is arranged on the frame 2 and is used for driving the hollow rotating shaft 4-1 to rotate. In the preferred embodiment, the driving mechanism 3 is fixed on the frame 2 through bolts, and drives the driving wheel 8 through chain transmission.
The embodiment of the invention provides an open type self-cleaning pre-pump filter which is good in self-cleaning effect and good in sewage filtering effect, and further improves the filtering efficiency of the filter.
As a preference of the above embodiment, referring to fig. 5, the perturbation device 6 includes: perturbation member 6-1 and pilot member 6-3;
the disturbance component 6-1 is fixedly connected with the hollow rotating shaft 4-1; disturbing member 6-1 has an end portion close to cylindrical screen 7, parallel to the outer wall of cylindrical screen 7;
the pilot component 6-3 is fixedly connected with the hollow rotating shaft 4-1; the pilot member 6-3 may be fixed directly to the hollow rotating shaft 4-1 or indirectly to the hollow rotating shaft 4-1 through a connecting member. The pilot member 6-3 is disposed forward of the perturbation member 6-1 in the rotation direction; the guide member 6-3 has an end near the cylindrical screen 7 parallel to the outer wall of said cylindrical screen 7 so that the guide member 6-3 can rotate with a fixed clearance from the cylindrical screen 7.
There is a gap between the pilot member 6-3 and the disturbing member 6-1 so that in operation the pilot member 6-3 and the disturbing member 6-1 cooperate to clean the cylinder screen 7 and keep impurities away from the cylinder screen 7. When the guide member 6-3 rotates, a dynamic negative pressure area is generated between the guide member and the cylinder filter screen 7 to help the impurities on the cylinder filter screen 7 fall off, and meanwhile, the guide member 6-3 is arranged close to the outer wall of the cylinder filter screen 7 to contact and pull away part of the impurities on the cylinder filter screen 7 to help the cylinder filter screen 7 to be cleaned.
Preferably, the disturbing member 6-1 is a groove structure; the groove structure is arranged along the axial direction of the cylinder filter screen 7; the openings of the groove structures face the cylinder screen 7. The disturbance component 6-1 is fixedly connected to the hollow rotating shaft 4-1 through a connecting rod; the fixed connection is preferably welded; of course, it may be secured by fasteners. This embodiment is preferred in that the jet direction of the nozzle is directed towards the opening of the turbulence member 6-1 for jetting pressurized water in the direction of the turbulence member 6-1. Of course, the spraying direction of the nozzle can also point to the gap between the disturbing component 6-1 and the pilot component 6-3, so that the pilot component 6-3 arranged in front of the disturbing component 6-1 can be matched with the washing mechanism 4 when a dynamic negative pressure area is generated between the guide component 6-3 and the cylindrical filter screen 7 during rotation to clean the cylindrical filter screen 7, and the disturbing component 6-1 arranged behind the pilot component 6-3 can continue to carry out fluid disturbance, so that the cleaning effect is better.
In the embodiment, the upper end of the disturbing member 6-1 is preferably closed; further, the upper end of the disturbing member 6-1 is sealed by arranging a baffle plate for preventing the sundries rushing into the disturbing member 6-1 from rushing upwards out of the disturbing member 6-1.
Preferably, the outer wall of the disturbing member 6-1 is a cambered surface; the cambered surface is bent along the rotating direction of the disturbing member 6-1, so that the water surface can be cut conveniently. Further, the curvature of the front part of the cambered surface along the rotating direction of the disturbing member 6-1 is smaller than that of the rear part, so that the resistance of the disturbing member 6-1 in water is reduced, and the power consumption is saved. The disturbing member 6-1 can generate a dynamic negative pressure zone between the disturbing member and the cylindrical filter screen 7 when rotating to help the impurities on the cylindrical filter screen 7 to fall off, and the disturbing member 6-1 is arranged close to the outer wall of the cylindrical filter screen 7 to contact and pull away part of the impurities on the cylindrical filter screen 7 to help the cylindrical filter screen 7 to be cleaned.
As a preference of the above embodiment, referring to fig. 4, the front part of the outer wall of the disturbing member 6-1 in the rotating direction has an angle of 10 ° to 30 ° with the tangent plane of the cylindrical screen 7; the section is located at the front end of the cylindrical filter screen 7 corresponding to the disturbing member 6-1, and is used for reducing the resistance of the fluid; further, the front end of disturbing member 6-1 is closely attached to the outer wall of cylindrical screen 7 so that disturbing member 6-1 can peel off part of the foreign matter. Of course, the outer wall of disturbing member 6-1 may be curved with a curvature such that the outer wall of disturbing member 6-1 gradually approaches the outer wall of cylindrical screen 7 as it extends from the middle or near the middle to the front end and/or the rear end. Further, the front portion of the outer wall of the turbulence member 6-1 has a smaller curvature than the rear portion, which contributes to reducing the resistance to flow.
Preferably, the openings of the disturbing member 6-1 are of a circular arc structure to fit the outer wall of the cylindrical screen 7.
Preferably, as in the previous embodiment, both ends of perturbing member 6-1 are aligned with both ends of cylindrical sieve 7, to coordinate with washing means 4.
As a preference of the above embodiment, the disturbing member 6-1 includes: a first plate and a second plate;
the first plate is fixedly connected with the second plate; the first plate is provided with a groove; the groove is arranged along the axial direction of the cylinder filter screen 7; the opening direction of the groove is opposite to the opening direction of the negative pressure isolating component 4-3; the second plate is arranged on the outer side of the first plate and fixedly connected with the first plate; the front ends of the second plate and the first plate along the rotating direction are arranged in a closed manner; the rear ends of the second plate and the first plate along the rotation direction are provided with cavity inlets; the cavity inlet is arranged corresponding to the nozzle and is used for receiving sundries sprayed from the cylindrical filter screen 7 by the nozzle;
as a preference of the above embodiment, the first plate member is arc-shaped; the second plate is arc-shaped; the circular arc diameter of the second plate is larger. Further, the first plate and the second plate are arranged eccentrically.
As a preference of the above embodiment, the cleaning mechanism 4 further includes: a negative pressure isolation member 4-3;
the negative pressure isolation component 4-3 is fixedly arranged on the spray washing pipe 4-2 and is arranged on two sides of the spray nozzle along the distribution direction of the spray nozzle; the opening of the negative pressure isolation component 4-3 faces the spraying direction of the nozzle; a dynamic isolation area is formed between the negative pressure isolation component 4-3 and the cylinder filter screen 7 and is used for protecting water sprayed from the nozzle from the water flow flowing into the cylinder filter screen 7.
Preferably, as in the above embodiment, the gap between the perturbation member 6-1 and the pilot member 6-3 and the opening of the negative pressure isolation member 4-3 are disposed opposite to each other. Alternatively, the opening of the negative pressure isolation component 4-3 is opposite to the opening of the disturbance component 6-1, a closed space is formed inside and outside the cylindrical filter screen 7, the disturbance component 6-1 distributes sewage in rotation, and a dynamic negative pressure area is formed between the disturbance component 6-1 and the cylindrical filter screen 7; the dynamic negative pressure area corresponds to the dynamic isolation area, so that the internal and external pressure difference of the cylindrical filter screen 7 is changed, the internal pressure of the cylindrical filter screen 7 is smaller than the external pressure, the changed external pressure is smaller than the internal pressure, and the separation of impurities from the cylindrical filter screen 7 is promoted; the separated impurities are flushed into the disturbing component 6-1 to be collected or collected and led out in other modes.
As a preference of the above embodiment, the outer side of the spout is a linear slit, and the inner side is a circular through hole; the circular through hole is communicated with the linear gap; the width of the linear gap is not more than the diameter of the circular through hole, so that the sprayed water flow is dispersed, and the full coverage of the cylindrical filter screen 7 is realized. Alternatively, the nozzle is a nozzle arranged on the spray pipe 4-2, and the water spraying by the nozzle can also realize the dispersion of the sprayed water flow so as to achieve the overall washing of the cylinder filter screen 7. Preferably, the nozzle is a fan-shaped independent nozzle.
As a preferable aspect of the above embodiment, the method further includes: a water pump 5; a water inlet pipe 10 of the water pump 5 is communicated with a water outlet 7-4 and used for pumping filtered water; a water outlet pipe 9 of the water pump 5 is communicated with a water inlet 4-11 and is used for providing pressurized water for the spray washing pipe 4-2 through the hollow rotating shaft 4-1. In the embodiment, the water pump 5 is preferably arranged on the frame 2, so that the control is convenient; it is of course not excluded that the water pump 5 is arranged at another location outside the housing 2. Alternatively, the water pump 5 includes: a first water pump and a second water pump; the first water pump is communicated with the water outlet 7-4 and used for sucking filtered water and then conveying the water to a place where clean water is needed; the second water pump is communicated with the water inlet 4-11 and is used for providing pressurized water for the spray washing pipe 4-2 through the hollow rotating shaft 4-1. And the second water pump pumps the cleaning water to provide pressurized cleaning water for the spray washing pipe 4-2.
Preferably, as for the above embodiment, a flexible member 6-2 is arranged between the perturbation device 6 and the cylindrical screen 7; the flexible member is disposed at an end of the perturbation member and/or the pilot member proximate to the cylindrical screen. In the embodiment, the flexible member 6-2 is preferably a rubber sheet or a steel brush; of course other flexible objects such as rubber brushes are not excluded. This embodiment preferably has the flexible member 6-2 in slidable contact with the cylindrical screen 7.
As a preference of the above embodiment, the negative pressure isolation member 4-3 is provided with an elastic material 4-31; an elastic material 4-31 is disposed between the negative pressure isolation member 4-3 and the cylindrical screen 7. In this embodiment, the elastic material 4-31 is preferably a rubber strip or sheet, etc. for sealing. In this embodiment, the elastic material 4-31 is preferably in slidable contact with the cylindrical screen 7.
Preferably, the cylindrical filter screen 7 is a stainless steel punched mesh or a stainless steel woven mesh, so that the structure is reliable and the processing cost is low. Of course, the preferred embodiment does not exclude the cylindrical screen 7 from being filtered by the cylindrical support supporting mesh; the mesh has predetermined filtration precision, can filter predetermined impurity. Further, cylinder fixing members having through holes are provided at the inner and outer sides of the cylinder screen 7 for fixing and protecting the cylinder screen 7; alternatively, it is also possible to fix the cylinder fixing member for filtration by the inside and outside of the filter cloth.
As a preference of the above embodiment, the mesh of the cylindrical screen 7 is circular; the diameter of the mesh is 50-550 μm to achieve the desired filtering effect.
In another aspect, an embodiment of the present invention provides an impurity filtering method, including the following steps:
the cylindrical filter screen 7 is vertically arranged in the sewage, and the sewage flows from the outside of the cylindrical filter screen 7 to the inside of the cylindrical filter screen 7;
the opening of the negative pressure isolation component 4-3 is opposite to the opening of the disturbance component 6-1, and a closed space is formed inside and outside the cylindrical filter screen 7; the cleaning mechanism 4 arranged in the cylinder filter screen 7 and the disturbing device 6 arranged outside the cylinder filter screen 7 are driven to synchronously rotate;
supplying pressurized water to the washing means 4; the pressurized water is sprayed to the cylindrical filter screen 7 from the nozzle so as to wash away impurities on the outer wall of the cylindrical filter screen 7; a dynamic isolation area is formed between the negative pressure isolation component 4-3 and the cylindrical filter screen 7 and is used for protecting water sprayed by the nozzle from being influenced by water flow flowing into the cylindrical filter screen 7; meanwhile, the disturbance device 6 drives the sewage to rotate when in circular motion, so that impurities in the sewage are far away from the cylindrical filter screen 7 under the action of centrifugal force; when the disturbing device 6 rotates, a dynamic negative pressure area is formed between the disturbing device and the cylindrical filter screen 7; the dynamic negative pressure area corresponds to the dynamic isolation area, so that the internal and external pressure difference of the cylindrical filter screen 7 is changed, the internal pressure of the cylindrical filter screen 7 is smaller than the external pressure, the changed external pressure is smaller than the internal pressure, and impurities are separated from the cylindrical filter screen 7; the separated impurities are flushed into a disturbing device 6 for collection or export;
the cleaning water flowing into the cylinder filter screen 7 is sucked out, and the sewage is filtered.
Preferably, the method of the above embodiment is a method of performing a filtration operation using any one of the open type self-cleaning pre-pump filters described above.
The cleaning mechanism 4 of the open type self-cleaning pump prefilter provided by the embodiment of the invention is driven to rotate to circularly wash the cylindrical filter screen 7, so that the self-cleaning of the cylindrical filter screen 7 is realized, the cleaning of the cylindrical filter screen 7 is kept, the filtering effect is improved, the shutdown cleaning is not needed, and the filtering efficiency can be improved.
The open type self-cleaning pre-pump filter provided by the embodiment of the invention has the advantages of simple structure, strong capability of continuously backwashing floaters, sludge and other impurities, stable operation, capability of independently finishing work links such as trash blocking and filtering, capability of better meeting the filtering requirements of different irrigation projects on water quality, capability of avoiding shutdown maintenance, capability of improving irrigation efficiency and capability of reducing the maintenance cost of the filter.
While the invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. An open type self-cleaning pre-pump filter is characterized by comprising a frame, a cylinder filter screen, a cleaning mechanism, a disturbance device and a driving mechanism;
the cylindrical filter screen is arranged on the rack and is fixedly connected with the rack;
the cleaning mechanism can be rotatably arranged on the cylindrical filter screen; the cleaning mechanism includes: a hollow rotating shaft and a spray washing pipe;
the hollow rotating shaft is rotatably arranged on the cylindrical filter screen and is coaxial with the cylindrical filter screen;
one or more spray washing pipes are arranged; the spray washing pipe is arranged inside the cylinder filter screen; the spray washing pipe is fixedly arranged on the hollow rotating shaft and is communicated with the hollow rotating shaft; the spray pipe is provided with a nozzle along the axial direction of the cylindrical filter screen and is used for spraying pressurized water to the cylindrical filter screen;
one end of the hollow rotating shaft is provided with a water inlet which is used for providing pressurized water for the spray washing pipe;
the disturbance device is fixedly arranged on the hollow rotating shaft, is positioned on the outer side of the cylindrical filter screen, is arranged corresponding to the spray washing pipe, and is driven by the hollow rotating shaft to synchronously rotate with the spray washing pipe;
one end of the cylindrical filter screen is provided with a water outlet which is used for sucking out filtered water;
the driving mechanism is arranged on the rack and used for driving the hollow rotating shaft to rotate;
the perturbation device comprises: a perturbation member and a pilot member;
the disturbing component is fixedly connected with the hollow rotating shaft; the disturbance member has an end proximate to the cylindrical screen, the end parallel to an outer wall of the cylindrical screen;
the pilot component is fixedly connected with the hollow rotating shaft and is arranged in front of the disturbance component along the rotating direction; the pilot member has one end near the cylinder screen, the one end of the pilot member being parallel to the outer wall of the cylinder screen;
a gap is arranged between the pilot component and the disturbance component;
the disturbing component is of a groove structure; the groove structure is arranged along the axial direction of the cylinder filter screen; the openings of the groove structures face the cylinder filter screen.
2. The open self-cleaning pre-pump filter of claim 1,
the wiper mechanism still includes: a negative pressure isolation member;
the negative pressure isolation components are fixedly arranged on the spray washing pipe and are arranged on two sides of the spray nozzles along the distribution direction of the spray nozzles; the opening of the negative pressure isolation member faces the ejection direction of the ejection port.
3. The open self-cleaning pre-pump filter of claim 2,
the clearance between the perturbation member and the pilot member and the opening of the negative pressure isolation member are disposed opposite.
4. The open self-cleaning pre-pump filter according to any of claims 1 to 3,
the outer side of the nozzle is a linear gap, and the inner side of the nozzle is a circular through hole; the circular through hole is communicated with the linear gap; the width of the linear gap is not larger than the diameter of the circular through hole.
5. The open self-cleaning pre-pump filter of claim 1, further comprising: a water pump;
a water inlet pipe of the water pump is communicated with the water outlet and is used for pumping filtered water;
and the water outlet pipe of the water pump is communicated with the water inlet and is used for providing pressurized water for the spray washing pipe through the hollow rotating shaft.
6. The open self-cleaning pre-pump filter of claim 2,
a flexible component is arranged between the disturbance device and the cylinder filter screen; the flexible member is disposed on the disturbance member and/or the pilot member at an end proximate to the cylindrical screen;
the negative pressure isolation component is provided with an elastic material; the elastic material is disposed between the negative pressure isolation member and the cylindrical screen.
7. An impurity filtering method is characterized by comprising the following steps:
the cylindrical filter screen is vertically arranged in the sewage, and the sewage flows from the outside of the cylindrical filter screen to the inside of the cylindrical filter screen;
the opening of the negative pressure isolation component and the opening of the disturbance component are arranged oppositely, and a closed space is formed inside and outside the cylindrical filter screen; the cleaning mechanism arranged in the cylindrical filter screen and the disturbance device arranged outside the cylindrical filter screen are driven to synchronously rotate;
providing pressurized water to the cleaning mechanism; the pressurized water is sprayed to the cylindrical filter screen from the nozzle so as to wash away impurities on the outer wall of the cylindrical filter screen; a dynamic isolation area is formed between the negative pressure isolation component and the cylindrical filter screen and is used for protecting water sprayed from the nozzle from being influenced by water flow flowing into the cylindrical filter screen; meanwhile, the disturbance device drives the sewage to rotate when in circular motion, so that impurities in the sewage are far away from the cylindrical filter screen under the action of centrifugal force; when the disturbing device rotates, a dynamic negative pressure area is formed between the disturbing device and the cylinder filter screen; the dynamic negative pressure area corresponds to the dynamic isolation area, so that the internal and external pressure difference of the cylindrical filter screen is changed, and the separation of impurities from the cylindrical filter screen is promoted; the separated impurities are flushed into a disturbing device for collection or export;
the cleaning water flowing into the cylinder filter screen is sucked out, so that the sewage is filtered;
the method employs the open self-cleaning pre-pump filter of any one of claims 2, 3 and 6 for filtration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611180112.5A CN106731105B (en) | 2016-12-19 | 2016-12-19 | Open type self-cleaning pre-pump filter and impurity filtering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611180112.5A CN106731105B (en) | 2016-12-19 | 2016-12-19 | Open type self-cleaning pre-pump filter and impurity filtering method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106731105A CN106731105A (en) | 2017-05-31 |
| CN106731105B true CN106731105B (en) | 2023-01-06 |
Family
ID=58890765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611180112.5A Active CN106731105B (en) | 2016-12-19 | 2016-12-19 | Open type self-cleaning pre-pump filter and impurity filtering method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106731105B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026671A (en) * | 2018-09-17 | 2018-12-18 | 辽宁格瑞特泵业有限公司 | Automatic desilting filter |
| CN112619241A (en) * | 2021-01-14 | 2021-04-09 | 河南锦源环保科技有限公司 | Split type filtering system and filtering method thereof |
| CN114949987A (en) * | 2022-06-02 | 2022-08-30 | 石河子大学 | Pump pre-filter with negative pressure blockage cleaning device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202516387U (en) * | 2012-03-15 | 2012-11-07 | 王忠森 | Scraper type continuous filter |
| CN102814064A (en) * | 2012-08-17 | 2012-12-12 | 安徽菲利特流体设备制造有限公司 | Negative pressure self-cleaning water filter |
| CN105879466A (en) * | 2016-06-12 | 2016-08-24 | 新疆石达赛特科技有限公司 | Self-driven cylindrical screen type forebay filter |
| CN206334419U (en) * | 2016-12-19 | 2017-07-18 | 新疆石达赛特科技有限公司 | A kind of open self-cleaning pump front filter |
-
2016
- 2016-12-19 CN CN201611180112.5A patent/CN106731105B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202516387U (en) * | 2012-03-15 | 2012-11-07 | 王忠森 | Scraper type continuous filter |
| CN102814064A (en) * | 2012-08-17 | 2012-12-12 | 安徽菲利特流体设备制造有限公司 | Negative pressure self-cleaning water filter |
| CN105879466A (en) * | 2016-06-12 | 2016-08-24 | 新疆石达赛特科技有限公司 | Self-driven cylindrical screen type forebay filter |
| CN206334419U (en) * | 2016-12-19 | 2017-07-18 | 新疆石达赛特科技有限公司 | A kind of open self-cleaning pump front filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106731105A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101666168B (en) | Swimming pool bottom hydro power pushed automatic cleaner | |
| CN106731105B (en) | Open type self-cleaning pre-pump filter and impurity filtering method | |
| AU2017228582A1 (en) | Submersible filter system | |
| CN105879466A (en) | Self-driven cylindrical screen type forebay filter | |
| CN2910324Y (en) | Micro solid/liquid separator | |
| CN202724807U (en) | Negative pressure self-cleaning water filter | |
| CN205699728U (en) | A kind of cylinder well strainer | |
| CN111096214A (en) | Ecological garden rainwater cyclic utilization system | |
| CN114377463A (en) | High efficiency sewage residue processing apparatus | |
| CN117563315A (en) | Front filtering device of hydraulic drive dirt suction type self-cleaning pump | |
| CN102814064A (en) | Negative pressure self-cleaning water filter | |
| CN104740924B (en) | Hydroturbine propelled microfilter | |
| CN110124382A (en) | Floated automatic cleaning strainer | |
| CN208372631U (en) | Floatation type is without press filtering device before pumping | |
| CN214714861U (en) | Water control device special for coal geological engineering | |
| CN214680311U (en) | A anti-clogging device for sewage treatment | |
| CN204723866U (en) | Hydroturbine repulsive-type maglev Microfilter | |
| CN208626764U (en) | A kind of Biocidal algae-killing agent liquid medicine filtering device | |
| CN108755642A (en) | Floater processing unit | |
| CN206334419U (en) | A kind of open self-cleaning pump front filter | |
| KR100806543B1 (en) | Device to remove moss from sewage disposal plant | |
| CN219437960U (en) | Drum-type suspended solid filter equipment | |
| CN214090827U (en) | Wall spraying device for house construction | |
| CN216170239U (en) | Grating cleaning equipment of grating machine | |
| CN220823779U (en) | Irrigation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |