CN111760341A - Extrusion type fiber filter and backwashing method thereof - Google Patents
Extrusion type fiber filter and backwashing method thereof Download PDFInfo
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- CN111760341A CN111760341A CN202010712857.1A CN202010712857A CN111760341A CN 111760341 A CN111760341 A CN 111760341A CN 202010712857 A CN202010712857 A CN 202010712857A CN 111760341 A CN111760341 A CN 111760341A
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- 239000000835 fiber Substances 0.000 title claims abstract description 187
- 238000011001 backwashing Methods 0.000 title claims abstract description 62
- 238000001125 extrusion Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000008859 change Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 56
- 230000003205 diastolic effect Effects 0.000 claims description 31
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 35
- 230000009471 action Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241000755266 Kathetostoma giganteum Species 0.000 description 1
- 241001417935 Platycephalidae Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/48—Filters 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
- B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/48—Filters 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
- B01D24/4807—Handling the filter cake for purposes other than regenerating
- B01D24/4815—Handling the filter cake for purposes other than regenerating for washing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/04—Controlling the filtration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Filtering Materials (AREA)
Abstract
The invention provides an extrusion type fiber filter and a backwashing method thereof, relates to the technical field of filtering equipment, and mainly aims to provide a novel extrusion type filtering device. The extrusion type fiber filter comprises a shell and a filtering component arranged in the shell along the axial direction of the shell, wherein the shell is respectively provided with an extrusion area and a relaxation area along the axial direction of the shell, and any cross-sectional area of the extrusion area in the axial direction is smaller than any cross-sectional area of the relaxation area in the axial direction; the filter assembly comprises a porous hanging scaffold and a plurality of fiber bundles fixedly arranged on the porous hanging scaffold, and the porous hanging scaffold can drive the fiber bundles to do piston motion along the axial direction of the shell; when the perforated hanging scaffold moves, the fiber bundles can move between the squeezing area and the relaxation area along the axial direction of the shell to change the distribution density of the fiber bundles. The invention can provide the extrusion type fiber filter which is novel in structure and convenient to use.
Description
Technical Field
The invention relates to the technical field of filtering equipment, in particular to an extrusion type fiber filter and a backwashing method thereof.
Background
Filters, as the name implies, are devices for filtering suspended matter in water, which are closely related to people's daily life, most commonly drinking water filtration devices. In the face of different impurities, different filtering methods are often needed, including sand filtering, activated carbon and fiber filtering, and the like. The filter paper and the filter element commonly used in the experiment are one of the fiber filters. At present, the fiber filtering equipment commonly used in the market mainly utilizes a perforated plate or a rubber bag and the like to extrude fiber bundles so as to reduce gaps among the fiber bundles, thereby realizing the purpose of filtering the fiber bundles.
Disclosure of Invention
The invention aims to provide an extrusion type fiber filter and a backwashing method thereof, and provides a novel fiber bundle extrusion structure. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a squeezing type fiber filter, which comprises a shell and a filtering component arranged in the shell along the axial direction of the shell,
the casing is respectively provided with an extrusion area and a relaxation area along the axis direction of the casing, and any cross-sectional area of the extrusion area in the axis direction is smaller than any cross-sectional area of the relaxation area in the axis direction;
the filter assembly comprises a porous hanging scaffold and a plurality of fiber bundles fixedly arranged on the porous hanging scaffold, and the porous hanging scaffold can drive the fiber bundles to perform piston movement along the axial direction of the shell;
when the perforated hanging scaffold moves, the fiber bundle can move between the squeezing area and the relaxing area along the axial direction of the shell to change the distribution density of the fiber bundle.
The space of the relaxation area is larger than that of the extrusion area, and the fiber bundles with the same number move from the extrusion area to the relaxation area under the action of the drawing action of the vertical disc and the scouring of backwashing water and backwashing gas, so that the distribution density of the fiber bundles is reduced, and the distance between the adjacent fiber bundles is increased. When the fiber bundles move between the extrusion area and the relaxation area under the drive of the porous hanging scaffold, the distribution density of the fiber bundles is constantly changed, and when the fiber bundles are positioned in the extrusion area, gaps among the fiber bundles are smaller, and the filter is in a filtering state; when it is in the diastolic region, the gap between the fiber bundles is large, and the filter is in a backwashing state. Compared with the traditional extrusion type, the mode of adjusting the distribution density of the fiber bundles by changing the area of the fiber bundles has completely different structure and action mode.
In the above technical solution, preferably, the device further includes a driving assembly, the driving assembly includes a pivot shaft penetrating through one end of the housing along an axial direction of the housing, and the pivot shaft is fixedly connected to the porous hanging scaffold and drives the porous hanging scaffold to move.
In the above technical solution, preferably, the driving assembly further includes a power supply member capable of driving the pivot to move, and the power supply member includes at least one of a hydraulic device, a pneumatic device and an electric device.
In the above technical solution, preferably, the filter assembly further includes a porous hanging plate located below the porous hanging plate, and the porous hanging plate is fixedly connected to the other end of the fiber bundle and can provide a downward pulling force to the fiber bundle.
Two ends of the fiber bundle are respectively connected with the porous hanging plate and the porous hanging plate.
In the above technical solution, preferably, the density of the porous vertical disc is greater than the density of water.
In the above technical solution, preferably, the compression region is located at an upper end of the diastolic region.
At the moment, the porous hanging plate is always positioned below the porous hanging plate under the action of gravity, and can provide a downward force for the fiber bundles, so that all the fiber bundles can smoothly move to the diastolic area when the porous hanging plate moves towards the diastolic area.
In the above technical solution, preferably, the upper surface area of the porous hanging plate is larger than the lower surface area of the porous hanging plate, so that when the fiber bundle moves into the diastole zone along with the porous hanging plate, the gap between adjacent fiber bundles becomes larger.
In the above technical solution, preferably, the squeezing area is located at a lower end of the relaxation area, and the pivot passes through the porous hanging scaffold and is fixedly connected with the porous hanging scaffold.
Because the diastole area is positioned above the extrusion area, in order to ensure that the fiber bundles can completely enter the diastole area, the porous hanging scaffold and the porous hanging scaffold are fixedly connected with the pivot, and the length of the fiber bundles is greater than the distance between the porous hanging scaffold and the porous hanging scaffold.
In the above technical solution, preferably, the inner side wall of the diastolic area is further fixedly provided with a baffle, the porous hanging plate can move only on one side of the baffle, and when the porous hanging plate moves to the position of the baffle, the porous hanging plate continues to move for a certain distance, so as to further loosen the fiber bundle and facilitate backwashing.
In the above technical solution, preferably, at least one of two ends of the housing in the axial direction is a curved surface structure.
The filter has different pressure-resistant requirements, and when the internal pressure of the filter is higher, the end part of the filter needs to be arranged to be of a curved surface structure so as to improve the pressure-resistant capacity of the filter.
In the above technical solution, preferably, a joint between the squeezing area and the diastolic area is an arc-shaped structure.
Because the fiber bundle has multiple friction with the squeezing area and the relaxation area, in order to reduce the abrasion of the fiber bundle, the joint of the two areas is arranged to be in an arc-shaped structure.
In the above technical solution, preferably, a plurality of holes are alternately arranged on the porous hanging scaffold, and the fiber bundle is fixedly arranged on the porous hanging scaffold through the holes. The staggered fiber bundles can ensure that the adjacent fiber bundles are mutually attached (for example, the center of the second layer of fiber bundles can be arranged right opposite to the gap between the two adjacent fiber bundles of the first layer, the third layer of fiber bundles is arranged right opposite to the gap between the second layer of fiber bundles, and the like), so that the fiber bundles are arranged more tightly, the gaps are smaller, and the filtering precision is improved.
In the above technical solution, preferably, the housing is provided with a water inlet, a water outlet, a backwash air inlet, a backwash water outlet and an air outlet which are communicated with the internal environment and the external environment.
The invention also provides a backwashing method of the extrusion type fiber filter, which comprises the following steps:
the method comprises the following steps: moving the perforated hanging scaffold with the fiber bundle along the axial direction of the housing until the fiber bundle at least partially enters the diastolic zone;
step two: injecting backwashing liquid and backwashing gas into the shell, wherein the fiber bundle in the diastole area can be subjected to friction shaking under the action of the fluid;
step three: controlling the porous hanging scaffold to repeatedly move along the axis direction of the shell for multiple times and driving the fiber bundle to move to different positions of the diastolic area;
step four: discharging backwash water in the shell and detecting the water quality;
step five: when the backwashing water meets the water quality requirement, the backwashing is finished; and when the backwashing water does not meet the water quality requirement, repeating the second step to the fourth step.
Step three, the fiber bundle can be frequently and rapidly pulled to different positions for multiple times so as to be fully cleaned. The method can realize effective cleaning of the fiber bundle.
Compared with the prior art, the invention provides an extrusion type fiber filter and a backwashing method thereof, wherein the filter comprises a shell, a filtering component and a driving component, the structure of the shell is specially designed to comprise an extrusion area and a relaxation area, and a fiber bundle in the filtering component can be adjusted to be in a filtering state or a relaxation state by working on two different areas, so that the filtering or backwashing treatment is conveniently carried out. Compared with the traditional filter, the filter is more convenient to operate, does not influence the filtering precision of equipment, and is particularly suitable for filtering water with high suspended matter content.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view showing a filter state structure of a squeeze type fiber filter according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a backwashing state of the extrusion type fiber filter in the first embodiment of the invention;
fig. 3 is a schematic view showing a filter state structure of a squeeze type fiber filter according to a second embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a backwashing state of the extrusion type fiber filter in a second embodiment of the invention;
fig. 5 is a schematic view showing a filter state structure of a squeeze type fiber filter according to a third embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a backwashing state of a squeeze type fiber filter in a third embodiment of the invention;
fig. 7 is a schematic view showing a filter state of a squeeze type fiber filter according to a fourth embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a backwashing state of a squeeze type fiber filter in a fourth embodiment of the invention;
fig. 9 is a schematic view of the structure of the fiber bundle of fig. 8.
In the figure: 1. a housing; 11. an extrusion zone; 12. a diastolic region; 121. a baffle plate; 2. a filter assembly; 21. a porous hanging scaffold; 22. a fiber bundle; 23. a porous hanging disc; 3. a drive assembly; 31. a pivot; 32. an energy supply member; 4. a water inlet; 5. a water outlet; 6. backwashing the air inlet; 7. backwashing the water supply port; 8. backwashing the water outlet; 9. and (7) an exhaust port.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
FIG. 1 is a schematic view showing a filter state of a squeeze type fiber filter according to a first embodiment of the present invention; it can be seen that the extrusion type fiber filter is of a vertical structure as a whole, the extrusion area and the relaxation area are sequentially arranged from top to bottom along the axial direction of the extrusion area, and the width (or the inner diameter) of the relaxation area is obviously larger than that of the extrusion area; the filtering component is positioned in the extrusion area under the action of the driving component, most of structures of the fiber bundles are positioned in the extrusion area at the moment, and pores among the fiber bundles are reduced due to the reduction of the volume for filtering; in addition, the upper end of the shell is provided with a water inlet and an air outlet, the side wall of the lower end of the extrusion area is provided with a backwashing water outlet, and the lower end of the shell is provided with a water outlet, a backwashing air inlet and a backwashing water supply port.
FIG. 2 is a schematic structural diagram of a backwashing state of the extrusion type fiber filter in the first embodiment of the invention; compared with the figure 1, this extrusion formula fiber filter is in the backwash state this moment, and filter component is located the diastole zone under drive assembly's effect, because the volume grow, and the lower extreme separates the tow under the pulling of porous hanging down the dish simultaneously, and the hole grow between the tow, and when the lower surface of porous hanging down the dish was connected with the baffle laminating that is located on the casing inside wall, porous hanging dish removed a section distance again, and the tow is in lax state, and the distribution density of tow reduces, is convenient for wash.
Fig. 3 is a schematic structural diagram of a filtration state of the extrusion type fiber filter in a second embodiment of the invention, and fig. 4 is a schematic structural diagram of a backwashing state of the extrusion type fiber filter in the second embodiment of the invention; as can be seen by carefully observing and comparing, the difference between the two different embodiments is that the structures of the two ends of the shell are different, and the upper end and the lower end of the shell are changed into flat heads from curved structures protruding outwards.
FIG. 5 is a schematic view showing a filter state of a squeeze type fiber filter according to a third embodiment of the present invention; compared with the figure 1, the extrusion area and the relaxation area are sequentially arranged along the axial direction from bottom to top, and the pivot in the driving assembly is fixedly connected with the porous hanging plate, namely, the distance between the porous hanging plate and the porous hanging plate is constant, and the length of the fiber bundle between the porous hanging plate and the porous hanging plate is larger than the distance between the porous hanging plate and the porous hanging plate. When the device is in the filtration state, the fiber bundle is located in the extrusion region.
FIG. 6 is a schematic structural diagram of a backwashing state of a squeezing type fiber filter in a third embodiment of the invention; compared with the fig. 5, the extrusion type fiber filter is in a backwashing state, the filter assembly moves into the relaxation area under the action of the driving assembly, the fiber bundle is in a loose state, the distribution density of the fiber bundle is reduced, and backwashing and cleaning are facilitated.
FIG. 7 is a schematic view showing a filter state of a squeeze type fiber filter according to a fourth embodiment of the present invention; it can be seen that the extrusion type fiber filter is of a vertical structure as a whole, the extrusion area and the relaxation area are sequentially arranged from top to bottom along the axial direction of the extrusion area, and the width (or the inner diameter) of the relaxation area is obviously larger than that of the extrusion area; the filter assembly is positioned in the extrusion area under the action of the driving assembly and only comprises the porous hanging scaffold and the fiber bundle structure, most of the structure of the fiber bundle is positioned in the extrusion area under the pulling of the porous hanging scaffold, the lower end of the fiber bundle extends towards the direction of the relaxation area, and the lower end of the fiber bundle is not fixed, so that the fiber bundle is easier to clean and is mainly suitable for filtering high-concentration water such as slurry.
FIG. 8 is a schematic structural diagram of a backwashing state of a squeeze type fiber filter in a fourth embodiment of the invention; when the porous hanging scaffold moves from the extrusion area to the relaxation area, the fiber bundle moves along with the porous hanging scaffold and enters the relaxation area. Because the space in the diastole area is larger, the fiber bundle is in a free state without the extrusion and constraint of the side wall of the shell, the backwashing treatment of the fiber bundle is convenient, and the figure 9 is the state of the fiber bundle at this time.
The present invention provides a squeeze fiber filter including a housing 1 and a filter assembly 2 disposed inside the housing 1. Wherein, the shell 1 is provided with a water inlet 4, a water outlet 5, a backwashing air inlet 6, a backwashing water outlet 8 and an air outlet 9 which are communicated with the internal and external environment: when filtering treatment is carried out, liquid to be treated flows into the shell 1 through the water inlet 4, is treated by the filtering component 2 and then flows out of the water outlet 5; when backwashing is carried out, clean water flows in from the water inlet 4 (a backwashing water supply port 7 can also be additionally arranged on the shell 1, at the moment, the clean water flows in from the backwashing water supply port 7), gas is continuously supplied into the shell 1 through a backwashing air inlet 6 positioned at the bottom of the shell 1, redundant gas is discharged through the air outlet 9, and waste water after cleaning is discharged through the backwashing water outlet 8.
In order to realize better filtering effect and backwashing effect, the filter adopts an extrusion mode and utilizes the volume change to respectively carry out filtering and backwashing treatment.
Specifically, the filter assembly 2 comprises a porous hanging scaffold 21 and a plurality of fiber bundles 22 fixedly arranged on the porous hanging scaffold 21, and the porous hanging scaffold 21 can drive the fiber bundles 22 to do piston motion along the axial direction of the shell 1; the shell 1 is sequentially provided with a squeezing area 11 and a relaxation area 12 along the axial direction of the shell, wherein any cross-sectional area of the squeezing area 11 in the axial direction is smaller than that of the relaxation area 12 in the axial direction, which means that the distribution density of the fiber bundles 22 in the squeezing area 11 is different from that in the relaxation area 12, and the distribution density in the squeezing area 11 is larger than that in the relaxation area 12; when the perforated hanging scaffold 21 moves, the fiber bundle 22 can move between the squeezing area 11 and the relaxation area 12 along the axial direction of the shell 1, and the distribution density of the fiber bundle 22 changes, so that the fiber bundle 22 is switched between the filtering state and the backwashing state.
Since the volume of the diastolic area 12 is larger relative to the compressed area 11, the distribution density of the fiber bundles 22 decreases as the same number of fiber bundles 22 move from the compressed area 11 to the diastolic area 12, as indicated by an increase in the distance between adjacent fiber bundles 22. When the fiber bundle 22 moves between the squeezing area 11 and the relaxation area 12 under the driving of the porous hanging scaffold 21, the distribution density of the fiber bundle 22 is changed continuously, when the fiber bundle is positioned in the squeezing area 11, the gap between the fiber bundle 22 is smaller, and the filter is in a filtering state; when it is in the diastolic region 12, the gap between the fiber bundles 22 is large and the filter is in a backwash state. The manner of adjusting the distribution density of the fiber bundle 22 by changing the area of the fiber bundle 22 is completely different in structure and action compared with the conventional extrusion type.
It should be noted that each fiber bundle 22 is made of a plurality of fiber filaments twisted together. When the plurality of fiber bundles 22 are in the compressed state, the fiber filaments constituting the fiber bundles 22 are also in the mutually compressed state and the gap between two adjacent fiber filaments is narrowed or even fitted to each other under pressure.
In addition, considering that the fiber bundle 22 needs to be moved between the compression region 11 and the relaxation region 12 frequently when the filter is used, since the fiber bundle 22 has a plurality of frictions with the compression region 11 and the relaxation region 12, in order to reduce the abrasion of the fiber bundle 22, it is an alternative embodiment to provide the connection between the compression region 11 and the relaxation region 12 in an arc-shaped structure.
As an alternative embodiment, a plurality of holes are alternately arranged on the perforated hanging scaffold 21, and the fiber bundles 22 are fixedly arranged on the perforated hanging scaffold 21 through the holes. The staggered fiber bundles 22 can ensure that the adjacent fiber bundles 22 are attached to each other (for example, the center of the second layer of fiber bundles 22 can be arranged over against the gap between the two adjacent fiber bundles 22 in the first layer, the center of the third layer of fiber bundles 22 is arranged over against the gap between the two adjacent fiber bundles 22 in the second layer, and so on), so that the gap between the fiber bundles 22 is smaller, the attachment is tighter, and the improvement of the filtering precision is facilitated.
The fiber bundle 22 may also be secured to the perforated platform 21 by a drawstring or other structure.
In order to make the movement of the perforated hanging scaffold 21 more convenient and smoother, as an alternative embodiment, the filter further includes a driving assembly 3, the driving assembly 3 includes a pivot 31 penetrating through one end of the housing 1 along the axial direction of the housing 1, and the pivot 31 is fixedly connected with the perforated hanging scaffold 21 and drives the perforated hanging scaffold 21 to move along the axial direction of the housing 1.
As an alternative embodiment, the driving assembly 3 further comprises a power member 32 capable of driving the pivot 31 to move, and the power member 32 comprises at least one of a hydraulic device, a pneumatic device and an electric device.
In use, the pivot 31 is movable axially or telescopically relative to the housing 1 by the energiser member 32, thereby pulling the perforated platform 21 axially between the diastolic and compressive regions 12, 11.
Alternatively, the pivot 31 may be rotatable about an axis and in so doing urge the perforated platform 21 and along its length, in which case the pivot 31 may be a rod with a threaded surface and the perforated platform 21 is threadably connected to the pivot 31 and is capable of movement along its length.
It should be noted that the housing 1 may be of a vertical structure or a horizontal structure.
For convenience of use, the upright housing 1 is preferably constructed such that the pivot 31 is disposed in the vertical direction.
In consideration of the fact that the housing 1 needs to bear a certain pressure during filtering, in order to increase the bearing pressure of the housing 1, as an alternative embodiment, at least one of the two ends of the housing 1 in the axial direction is of a curved structure.
The filter has different pressure-resistant requirements, and when the internal pressure of the filter is higher, the end part of the filter needs to be provided with an outwardly convex curved surface structure so as to improve the pressure-resistant capability of the filter; when the pressure inside the filter is relatively small, it is possible to design both ends of the filter in the axial direction to be flat-headed structures.
Specifically, when the pressure resistance of the filter is designed to be less than 0.2MPa, two ends of the filter are flat-head structures; when the pressure resistance of the designed filter is more than 0.2MPa, the two ends of the designed filter are of curved surface structures.
The invention also provides a backwashing method of the extrusion type fiber filter, which comprises the following steps:
the method comprises the following steps: moving the perforated platform 21 with the fiber bundle 22 in the axial direction of the housing 1 until the fiber bundle 22 at least partially enters the diastolic section 12;
step two: injecting backwashing liquid and backwashing gas into the shell 1, wherein the fiber bundle 22 in the diastole area 12 can be rubbed and shaken under the action of the fluid;
step three: controlling the porous hanging scaffold 21 to repeatedly move along the axial direction of the shell 1 for a plurality of times and driving the fiber bundle 22 to move to different positions of the diastolic area 12;
step four: discharging the backwashing water in the shell 1 and detecting the water quality;
step five: when the backwashing water meets the water quality requirement, the backwashing is finished; and when the backwashing water does not meet the water quality requirement, repeating the second step to the fourth step.
By frequently and repeatedly pulling the fiber bundle 22 to different locations within the diastolic region 12 (i.e., pulling the fiber bundle 22 up and down within the diastolic region 12), an efficient and effective cleaning of the fiber bundle 22 may be achieved.
In addition, the pulling speed of the fiber bundle 22 can be adjusted according to the actual situation.
In order to judge the backwashing effect of the filter, as an optional implementation mode, water quality detection can be carried out on water discharged from the backwashing water outlet 8, a certain standard can be established for the water quality, and when the corresponding standard is reached, the backwashing operation is completed, and the filter assembly 2 is moved to the initial position; and when the corresponding standard is not met, repeating the operation step B.
Alternatively, the operation of step B may be repeated a certain number of times, empirically or as specified.
The technical scheme of the invention is further explained by combining the attached drawings.
Example 1:
as shown in fig. 1-2, the present invention provides a squeeze type fiber filter, which comprises a housing 1, a driving unit 3, and a filter unit 2, wherein the filter unit 2 comprises a perforated hanging plate 21, a fiber bundle 22, and a perforated hanging plate 23, and both ends of the fiber bundle 22 are connected to the perforated hanging plate 21 and the perforated hanging plate 23, respectively.
It should be noted that there is no necessary connection between the area of the perforated hanging plate 23 and the area of the perforated hanging plate 21. However, in order to achieve a good backwashing effect, the area of the perforated hanging plate 23 is generally set larger than the area of the perforated hanging plate 21.
Specifically, the fiber bundle 22 may be directly connected to the perforated hanging plate 23, or may be indirectly fixed to the perforated hanging plate 23 by a string or the like.
For convenience of operation, as an alternative embodiment, the compression zone 11 is located at the upper end of the diastolic zone 12.
At this time, the perforated hanging plate 23 is always located under the perforated hanging plate 21 under the action of gravity, and can provide a downward force to the fiber bundles 22, so that it can be ensured that all the fiber bundles 22 can smoothly move into the diastolic area 12 when the perforated hanging plate 21 moves toward the diastolic area 12. That is, the porous hanging disc 23 has a density greater than that of water.
When the fiber bundle 22 moves into the diastolic area 12 along with the porous hanging plate 21, in order to ensure that the fiber bundle 22 can be in a relaxed state and is convenient to clean, as an alternative embodiment, a baffle plate 121 is fixed on the inner side wall of the diastolic area 12, and the porous hanging plate 23 can only move on one side of the baffle plate 121.
Specifically, the baffle 121 is a block structure, and may also be a ring structure disposed around the inner sidewall of the diastolic area 12.
Under the action of the baffle 121, the lower surface of the porous hanging disc 23 is connected with the baffle, and at the moment, the porous hanging disc 21 moves downwards for a certain distance to enable the fiber bundle 22 to be in a loose state, so that the fiber bundle 22 can shake and rub with each other under the disturbance of gas and liquid when the fiber bundle 22 is subjected to backwashing treatment, and a good cleaning effect is achieved.
Example 2:
the present embodiment 2 is different from embodiment 1 in that: as shown in fig. 3-4, the ends of the filter are now flat-headed.
The filter can be suitably constructed in a pressure-resistant manner according to the requirements and the intended use.
Example 3:
the present embodiment 3 is different from embodiment 1 in that: as shown in fig. 5 to 6, the present invention provides a squeeze type fiber filter comprising a housing 1, a driving module 3 and a filtering module 2, wherein a squeezing zone 11 is located at the lower end of a relaxation zone 12, and a pivot 31 is fixedly connected to a porous hanging plate 23 through a porous hanging plate 21.
Since the diastolic area 12 is located above the compression area 11, in order to ensure that the fiber bundle 22 can completely enter the diastolic area 12, the perforated hanging plate 21 and the perforated hanging plate 23 are fixedly connected to the pivot 31. At this time, the length of the fiber bundle 22 is greater than the distance between the perforated hanging scaffold 21 and the perforated hanging scaffold 23.
It should be noted that, under the fixing action of the pivot 31, the distance between the perforated hanging scaffold 21 and the perforated hanging scaffold 23 is constant, and the length of the fiber bundle 22 between the two is greater than the distance between the two. Thus when the bundle 22 is moved into the diastolic section 12, urged by the pivot 31, the bundle 22 is in a relaxed state.
Example 4:
the present embodiment 4 is different from embodiment 1 in that: as shown in fig. 7 to 9, the present invention provides a squeeze type fiber filter, which comprises a housing 1, a driving module 3 and a filter module 2, wherein the filter module 2 only comprises a porous hanging scaffold 21 and a fiber bundle 22 structure, one end of the fiber bundle 22 is connected with the porous hanging scaffold 21, and the other end is free to hang down under the action of gravity.
Compared with the above embodiment, the lower end of the fiber bundle 22 in the embodiment is in a loose state, so that the fiber bundle is more convenient to clean, and is more suitable for water to be filtered with extremely high suspended matter content in water.
When the extrusion type fiber filter is used for filtering water, the driving assembly 3 works and pulls the porous hanging scaffold 21 and the fiber bundle 22 into the extrusion area 11; when the squeezing type fiber filter needs to be backwashed, the driving component 3 is only required to drive the porous hanging scaffold 21 to move towards the diastolic area 12.
In addition, it should be noted that the number of the filter components in the filter may be one or more. When the number of the filter assemblies 2 is plural, plural filter assemblies 2 are arranged side by side.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The extrusion type fiber filter is characterized by comprising a shell (1) and a filter component (2) arranged in the shell (1) along the axial direction of the shell (1),
the casing (1) is respectively provided with an extrusion area (11) and a relaxation area (12) along the axial direction of the casing, and any cross-sectional area of the extrusion area (11) in the axial direction is smaller than any cross-sectional area of the relaxation area (12) in the axial direction;
the filter assembly (2) comprises a porous hanging scaffold (21) and a plurality of fiber bundles (22) fixedly arranged on the porous hanging scaffold (21), and the porous hanging scaffold (21) can drive the fiber bundles (22) to do piston motion along the axial direction of the shell (1);
when the perforated hanging scaffold (21) moves, the fiber bundle (22) can move between the compression zone (11) and the relaxation zone (12) along the axial direction of the shell (1) to change the distribution density of the fiber bundle (22).
2. The extrusion type fiber filter of claim 1, further comprising a driving assembly (3), wherein the driving assembly (3) comprises a pivot (31) penetrating through one end of the housing (1) along the axial direction of the housing (1), and the pivot (31) is fixedly connected with the porous hanging scaffold (21) and drives the porous hanging scaffold (21) to move.
3. The extruded fiber filter of claim 2, wherein the drive assembly (3) further comprises a power member (32) capable of driving the pivot shaft (31) to move, and the power member (32) comprises at least one of a hydraulic device, a pneumatic device and an electric device.
4. The extruded fiber filter of claim 2, wherein the filter assembly (2) further comprises a perforated hanging plate (23) located below the perforated hanging plate (21), the perforated hanging plate (23) being fixedly connected to the other end of the fiber bundle (22) and providing a downward pulling force to the fiber bundle (22).
5. The extruded fiber filter of claim 4 wherein the extrusion zone (11) is located at the upper end of the diastolic zone (12).
6. The extruded fiber filter of claim 4, wherein the extrusion zone (11) is located at the lower end of the relaxation zone (12), and the pivot (31) passes through the porous hanging plate (21) and is fixedly connected with the porous hanging plate (23).
7. The extrusion type fiber filter according to claim 4, wherein a baffle plate (121) is fixedly arranged on the inner side wall of the diastole region (12), and the porous vertical disc (23) can move only on one side of the baffle plate (121).
8. The extrusion type fiber filter according to claim 1, wherein a plurality of holes (211) are arranged on the perforated hanging scaffold (21) in a staggered mode, and the fiber bundles (22) are fixedly arranged on the perforated hanging scaffold (21) through the holes (211).
9. The extrusion type fiber filter according to any one of claims 1-8, wherein the shell (1) is provided with a water inlet (4), a water outlet (5), a backwashing air inlet (6), a backwashing water outlet (8) and an air outlet (9) which are communicated with the internal environment and the external environment.
10. The backwashing method of the extrusion type fiber filter according to any one of claims 1 to 9, comprising the steps of:
the method comprises the following steps: moving the perforated hanging scaffold (21) with the fiber bundle (22) in the axial direction of the housing (1) until the fiber bundle (22) at least partially enters the diastolic zone (12);
step two: injecting a backwash liquid and a backwash gas into the housing (1), the fibre bundle (22) in the diastolic zone (12) being frictionally shakable by the fluid;
step three: controlling the porous hanging scaffold (21) to repeatedly move along the axial direction of the shell (1) for multiple times and driving the fiber bundle (22) to move to different positions of the diastolic area (12);
step four: discharging backwash water in the shell (1) and detecting the water quality;
step five: when the backwashing water meets the water quality requirement, the backwashing is finished; and when the backwashing water does not meet the water quality requirement, repeating the second step to the fourth step.
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| CN202010712857.1A CN111760341A (en) | 2020-07-22 | 2020-07-22 | Extrusion type fiber filter and backwashing method thereof |
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| CN202010712857.1A CN111760341A (en) | 2020-07-22 | 2020-07-22 | Extrusion type fiber filter and backwashing method thereof |
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Application publication date: 20201013 |