CN112691415A - Backwashing filter and cleaning method - Google Patents
Backwashing filter and cleaning method Download PDFInfo
- Publication number
- CN112691415A CN112691415A CN201911014339.6A CN201911014339A CN112691415A CN 112691415 A CN112691415 A CN 112691415A CN 201911014339 A CN201911014339 A CN 201911014339A CN 112691415 A CN112691415 A CN 112691415A
- Authority
- CN
- China
- Prior art keywords
- filter
- cartridge
- cleaning
- bearing seat
- side wall
- 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.)
- Pending
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 54
- 238000011001 backwashing Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims description 7
- 239000013049 sediment Substances 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 239000012466 permeate Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 4
- 238000012827 research and development Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Images
Classifications
-
- 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
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/04—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being clamped between pervious fixed walls
- B01D24/08—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being clamped between pervious fixed walls the filtering material being supported by at least two pervious coaxial walls
-
- 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
- B01D24/4605—Regenerating the filtering material in the filter by scrapers, brushes, nozzles or the like placed on the cake-side of the stationary filtering material and only contacting the external layer
- B01D24/461—Regenerating the filtering material in the filter by scrapers, brushes, nozzles or the like placed on the cake-side of the stationary filtering material and only contacting the external layer by scrapers
-
- 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
Abstract
The invention relates to the technical field of technical research and development of filters, and the invention comprises the following contents: the invention discloses a backwashing filter, which comprises a filter main body, wherein a filter cylinder is arranged in the filter main body, a filter element is arranged in the filter cylinder, a transmission component is arranged on one side of the filter main body and is used for transmitting the filter cylinder to rotate, a cleaning component is arranged and is arranged in an inner cavity of the filter main body and is used for cleaning the outer side wall of the filter cylinder, and a cleaning component which is used for cleaning relative to the outer side wall of the filter cylinder is arranged on the outer side wall or the inner side wall of the filter cylinder, and the backwashing filter has the advantages that: the filter cleaning structure and the cleaning method of the filter are completely new, are suitable for the household water collecting tank, have good cleaning effect, and are particularly suitable for being used in water purification systems, particularly water purification systems of families, communities and the like.
Description
Technical Field
The invention relates to the technical field of filter research and development, in particular to a backwashing filter and a cleaning method.
Background
A general filter for home or industrial use generally includes a filter main body, a filter element, a water inlet/outlet, and a filter element installed in a filter cartridge, and purified water entering the filter cartridge and permeating through the outer wall of the filter cartridge is discharged.
Disclosure of Invention
Objects of the invention
To solve at least one technical problem in the background art, a backwashing filter is provided.
To solve at least one technical problem in the background art, a cleaning method for a backwashing filter is provided.
(II) technical scheme
In order to solve the problems, the technical scheme of the invention is as follows: the utility model provides a backwashing filter, includes the filter main part, the filter main part in be provided with the cartridge filter, the cartridge filter in establish the filter core, its characterized in that: the filter comprises a filter body, a transmission assembly, a cleaning assembly and a cleaning assembly, wherein the transmission assembly is used for transmitting the filter cartridge to rotate, the cleaning assembly is arranged in an inner cavity of the filter body and used for cleaning the outer side wall of the filter cartridge, and the cleaning assembly which is used for cleaning the outer side wall of the filter cartridge is arranged on the outer side wall or the inner side wall of the filter cartridge.
In an optional embodiment, the transmission assembly is a transmission motor which is in transmission connection with the filter cartridge through a transmission shaft to drive the filter cartridge and enable the filter cartridge to be driven.
In an alternative embodiment, the filter cartridge is rotatably mounted to the filter body by a first rotatable member.
In an alternative embodiment, the first rotating member includes a lower bearing seat disposed at the bottom of the filter body, the bottom of the filter cartridge is disposed on an outer ring shaft engaged with the bearing seat, and the outer ring shaft at the bottom of the filter cartridge is rotatably mounted on the lower bearing of the lower bearing seat.
In an alternative embodiment, the first rotating member includes an upper bearing seat disposed at the top of the filter body, and the transmission shaft of the transmission motor is rotatably inserted through the upper bearing of the upper bearing seat.
In an optional embodiment, a sewage drain pipe is arranged between the filter body and the filter cartridge and is positioned on the side wall of the filter body.
In an optional embodiment, the filter cartridge comprises an inner ring side plate and an outer ring side plate, the inner ring side plate and the outer ring side plate are provided with through holes, a filter material is arranged between the inner ring side plate and the outer ring side plate, and the inner ring plate is hollow to form the central cavity of the filter cartridge.
In an alternative embodiment, the outer ring shaft is hollow to form a water flow passage, one end of the outer ring shaft is arranged to extend to the inner side of the filter cylinder through the bottom surface of the filter cylinder, and the other end of the outer ring shaft extends to the direction of the water inlet pipe to the inner side of the water inlet pipe.
In an optional embodiment, the upper bearing seat or the lower bearing seat is sleeved with a waterproof rubber sleeve.
In an optional embodiment, the cleaning assembly comprises a column arranged on the filter body, and a first bristle assembly and/or a first scraper assembly abutting against the outer side wall of the filter cartridge are arranged on one side of the column.
In an alternative embodiment, the pillars are provided in groups parallel to the outer surface of the filter cartridge and in the filter body.
In an optional embodiment, the upper end and the lower end of the upright post are respectively provided with an upper connecting rod and a lower connecting rod, the upper connecting rod and the lower connecting rod are respectively rotatably and correspondingly mounted on the upper bearing seat and the lower bearing seat through a second rotating part, and the other side of the upright post is provided with a second bristle assembly and/or a second scraper blade assembly which are abutted against the inner side wall of the filter body.
In an alternative embodiment, the second rotating member includes an upper connecting ring and a lower connecting ring, which are disposed on the upper bearing seat outer ring and the lower bearing seat outer ring, and the upper connecting ring diameter and the lower connecting ring diameter are disposed to match the corresponding upper bearing seat diameter and the lower bearing seat diameter.
In an alternative embodiment, an outlet tube is provided which extends to the filter body between the filter cartridge and the inner side wall of the filter body.
A cleaning method using the backwashing filter as described above:
a, connecting a pressure water source into a water inlet, so that water flow continuously enters the inner cylinder of the filter cylinder and permeates and filters the water flow to the outer side wall of the filter cylinder for discharging;
and b, opening the transmission assembly to drive the filter cylinder to continuously rotate, and discharging the sediment deposited on the filter cylinder from the outer side wall of the filter cylinder due to the continuous rotation of the filter cylinder and simultaneously cleaning the filter cylinder by the cleaning assembly so as to separate the sediment from the filter cylinder and discharge the sediment from the drain pipe.
The drive assembly was turned off after observing the water flow gradually becoming clear from dirt.
The technical scheme of the invention has the following beneficial technical effects: the filter cleaning structure and the cleaning method of the filter are novel, are suitable for the household water collecting tank, have good cleaning effect, are particularly suitable for being used in water purification systems, particularly water purification systems of families, communities and the like, and are particularly suitable for application environments with filter materials of high-efficiency manganese sand filter materials and coconut shell activated carbon as filter materials.
Drawings
FIG. 1 is a schematic perspective view of a backwashing filter according to the present invention;
FIG. 2 is a schematic front view of a back-cleaning filter according to the present invention;
FIG. 3 is a perspective view of a backwashing filter according to the present invention;
FIG. 4 is a schematic diagram of a filter cartridge structure of a backwashing filter according to the present invention;
fig. 5 is a schematic structural diagram of a column of the backwashing filter according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Example 1: as shown in fig. 1 to 5, the present invention provides a backwashing filter, including a filter body 1, a filter cartridge 2 is arranged in the filter main body 1, a filter core 22 is arranged in the filter cartridge 2, in an alternative embodiment, a water outlet pipe 12 is provided, the water outlet pipe 12 extending to the filter body 1 between the filter cartridge 2 and the inner side wall of the filter body 1, a transmission component arranged on one side of the filter main body 1, the transmission component drives the filter cartridge 2 to rotate, a cleaning component is arranged in the inner cavity of the filter main body and is used for cleaning the outer side wall of the filter cartridge, the outer side wall or the inner side wall of the filter cylinder is provided with a cleaning component for cleaning relative to the outer side wall of the filter cylinder, and dirt thrown out of the outer side wall of the filter cylinder can be further cleaned or scraped by matching with the cleaning bristles or the soft cleaning scraper.
In an alternative embodiment, the transmission assembly is a transmission motor 3 which is in transmission connection with the filter cartridge 2 through a transmission shaft 31 to drive the filter cartridge 2 and enable the filter cartridge to be driven, and the outer side wall of the filter cartridge can be in rotary contact with the cleaning bristles or the soft cleaning scraper of the cleaning assembly.
In an alternative embodiment, the filter cartridge 2 is rotatably mounted on the filter body 1 through a first rotating member, in a preferred embodiment, the first rotating member includes a lower bearing seat 6 disposed at the bottom of the filter body 1, the bottom of the filter cartridge 2 is disposed on an outer ring shaft 21 engaged with the bearing seat, and the outer ring shaft 21 at the bottom of the filter cartridge 2 is rotatably mounted on the lower bearing of the lower bearing seat 6.
In an alternative embodiment, the first rotating member includes an upper bearing seat disposed at the top of the filter body 1, and a transmission shaft of the transmission motor is rotatably inserted through the upper bearing of the upper bearing seat to connect with the top end face of the filter cartridge.
In an alternative embodiment, a sewage drain pipe 13 is provided, and the sewage drain pipe 13 is disposed between the filter body 1 and the filter cartridge 2 and on the side wall of the filter body 1.
In an optional embodiment, the water inlet pipe 14 is disposed at the bottom of the filter main body 1, the filter cartridge 2 includes an inner ring side plate 201 and an outer ring side plate 202 having through holes, the filter material 22 is disposed between the inner ring side plate 201 and the outer ring side plate 202, an upper cover plate 203 and a lower cover plate 204 are disposed at the bottom and the top of the inner ring side plate 201 and the outer ring side plate 202, the inner ring plate is hollow to form the filter cartridge central cavity 200, and the inner ring side plate 201 and the outer ring side plate 202 may adopt a structure similar to a mesh filter screen.
In an alternative embodiment, the outer ring shaft 21 is hollow to form the water flow channel 210, one end of the outer ring shaft 21 is disposed to extend through the bottom surface of the filter cartridge 2 to the inside of the filter cartridge 2, and the other end of the outer ring shaft 21 extends into the water inlet pipe 14 toward the direction of the water inlet pipe 14, so as to guide the water flow to be filtered to the filter cartridge, specifically, to the hollow water inlet cavity formed by the inner ring side plate, so that the water flow enters the inner cylinder of the filter cartridge, passes through the filter and then seeps out from the outer side wall of the filter cartridge.
In an optional embodiment, the upper bearing seat or the lower bearing seat is sleeved with a waterproof rubber sleeve.
In an alternative embodiment, the cleaning assembly includes a pillar 4 disposed on the inside of the filter body 1, and a first bristle assembly 41 and/or a first scraper assembly abutting against the outer sidewall of the filter cartridge is disposed on one side of the pillar 4.
In an optional embodiment, the pillars 4 are multiple groups and are parallel to the outer surface of the filter cartridge and are disposed in the filter main body, in this embodiment, the pillars can be selectively disposed close to the side wall of the filter main body, or disposed between the inner side wall of the filter main body and the filter cartridge, and two ends of the pillars can be rotatably mounted on the filter main body through a rotating shaft.
In an optional embodiment, in order to clean the outer side wall of the filter cartridge and the inner side wall of the filter body at the same time, an upper connecting rod 43 and a lower connecting rod 44 are respectively arranged at the upper end and the lower end of the upright post 4, the upper connecting rod 43 and the lower connecting rod 44 are respectively rotatably and correspondingly mounted on the upper bearing seat 5 and the lower bearing seat 6 through a second rotating member, the other side of the upright post 4 is provided with a second bristle assembly 42 and/or a second scraper assembly which are abutted against the inner side wall of the filter body 1, the upright post rotates along with water flow to clean the side wall of the filter cartridge and the inner side wall of the filter body 1 at the same time,
in an alternative embodiment, the second rotating member includes an upper connecting ring 431 and a lower connecting ring 441 which are arranged on the outer rings of the upper bearing seat 5 and the lower bearing seat 6, and the diameters of the upper connecting ring 431 and the lower connecting ring 441 are matched with the diameters of the corresponding upper bearing seat 5 and the lower bearing seat 6.
Preferably, a plurality of groups of transmission motors can be additionally arranged, and the transmission motors drive the transmission gears through the transmission shafts to be meshed with the gears at the outer edges of the upper connecting rings and drive the stand columns to rotate in a transmission mode, so that a better cleaning effect is obtained.
Optionally, the first bristle component and the second bristle component are cleaning bristles, and the first scraper component or the second scraper component is a soft cleaning scraper or a hard material scraper.
Optionally, a control switch is arranged to control the transmission assembly to be closed.
Example 2:
a cleaning method of a backwashing filter comprises the following steps:
a pressurized water source is connected into a water inlet, so that water flow continuously enters the inner cylinder of the filter cylinder and permeates and filters the water flow to the outer side wall of the filter cylinder for discharging;
and the transmission assembly is started to drive the filter cylinder to rotate continuously, and the sediment deposited on the filter cylinder is discharged from the outer side wall of the filter cylinder due to the continuous rotation of the filter cylinder and is separated from the filter cylinder and discharged by the sewage discharge pipe due to the simultaneous cleaning of the filter cylinder by the cleaning assembly.
The water inlet pipe continuously feeds water and in the continuous rotating process of the filter cylinder, dirt or other substances adhered to the filter cylinder can continuously rotate, the dirt can be discharged out of the outer side wall of the filter cylinder along with the action of centrifugal force, the dirt or other adhered substances adhered to the outer cylinder of the filter cylinder are separated under the action of cleaning brush hair or cleaning scraper blade cleaning or scraping acting force, then the dirt water is continuously discharged out of the filter, when the cleanliness of water flow is high, the rotation of the filter cylinder is stopped, and the cleaning of the filter is completed.
The drive assembly was turned off after observing the water flow gradually becoming clear from dirt.
It is to be understood, therefore, that the foregoing detailed description of the invention is merely illustrative of or illustrative of the principles of the invention and is not to be taken in a limiting sense. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (15)
1. The utility model provides a backwashing filter, includes the filter main part, the filter main part in be provided with the cartridge filter, the cartridge filter in establish the filter core, its characterized in that: the filter comprises a filter body, a transmission assembly, a cleaning assembly and a cleaning assembly, wherein the transmission assembly is used for transmitting the filter cartridge to rotate, the cleaning assembly is arranged in an inner cavity of the filter body and used for cleaning the outer side wall of the filter cartridge, and the cleaning assembly which is used for cleaning the outer side wall of the filter cartridge is arranged on the outer side wall or the inner side wall of the filter cartridge.
2. A backwash filter as in claim 1 wherein: the transmission assembly is formed by connecting a transmission motor with the filter cartridge through a transmission shaft in a transmission manner to drive the filter cartridge.
3. A backwash filter as claimed in claim 2 wherein: the filter cartridge is rotatably arranged on the filter main body through a first rotating piece.
4. A backwash filter as claimed in claim 3 wherein: the first rotating piece comprises a lower bearing seat arranged at the bottom of the filter main body, the bottom of the filter cartridge is arranged on an outer annular shaft matched with a bearing seat bearing, and the outer annular shaft at the bottom of the filter cartridge is rotatably arranged on the lower bearing of the lower bearing seat.
5. A backwash filter as claimed in claim 4 wherein: the first rotating piece comprises an upper bearing seat arranged at the top of the filter main body, and a transmission shaft of the transmission motor is rotatably arranged on an upper bearing of the upper bearing seat in a penetrating way.
6. A backwash filter as claimed in claim 4 wherein: set up sewage drain pipe, sewage drain pipe set up in filter main part and cartridge filter between and be located the filter main part lateral wall on.
7. A backwash filter as claimed in claim 4 wherein: the filter cartridge comprises an inner ring side plate and an outer ring side plate, wherein the inner ring side plate and the outer ring side plate are provided with through holes, a filter material is arranged between the inner ring side plate and the outer ring side plate, and the inner ring plate is a hollow structure to form the central cavity of the filter cartridge.
8. A backwash filter as claimed in claim 4 wherein: the filter main part bottom is provided with the inlet tube, and the outer ring axle forms the water flow channel for the cavity, and the one end that sets up the outer ring axle passes the cartridge filter bottom surface and extends to the cartridge filter inboard, and the other end of outer ring axle extends to within the inlet tube towards the inlet tube.
9. A backwash filter as in claim 8 wherein: and the upper bearing seat or the lower bearing seat is sleeved with a waterproof rubber sleeve.
10. A backwash filter as in claim 1 wherein: the cleaning component comprises a stand column arranged on the inside of the filter main body, and one side of the stand column is provided with a first bristle component and/or a first scraper component which are connected with the outer side wall of the filter cartridge.
11. A backwash filter as in claim 10 wherein: the upright posts are multiple groups and are parallel to the outer surface of the filter cartridge and arranged in the filter main body.
12. A backwash filter as in claim 11 wherein: the upper end and the lower tip of stand be provided with connecting rod and lower connecting rod respectively, last connecting rod and lower connecting rod rotate rotatable correspondence through the second respectively and install on bolster bearing housing and step, the opposite side of stand have toward filter main part inside wall connect the second brush hair subassembly and/or second scraper blade subassembly that supports.
13. A backwash filter as in claim 12 wherein: the second rotating piece comprises an upper connecting ring and a lower connecting ring which are arranged on the outer ring of the upper bearing seat and the outer ring of the lower bearing seat, and the diameters of the upper connecting ring and the lower connecting ring are matched with the diameters of the upper bearing seat and the lower bearing seat.
14. A backflush filter according to any one of claims 1 to 13 wherein: and a water outlet pipe is arranged and extends to the filter main body between the filter cartridge and the inner side wall of the filter main body.
15. A cleaning method using the backwashing filter of any one of 1 to 14:
a, a pressure water source is connected into a water inlet, so that water flow continuously enters the inner cylinder of the filter cylinder and permeates and filters the water flow to the outer side wall of the filter cylinder to be discharged;
b, opening the transmission assembly to drive the filter cylinder to rotate continuously, discharging the sediment deposited on the filter cylinder from the outer side wall of the filter cylinder due to the continuous rotation of the filter cylinder and separating the sediment from the filter cylinder and discharging the sediment from a drain pipe due to the fact that the filter cylinder is cleaned by the cleaning assembly at the same time;
c, turning off the transmission assembly after observing that the water flow is gradually changed to be clear by dirt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911014339.6A CN112691415A (en) | 2019-10-23 | 2019-10-23 | Backwashing filter and cleaning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911014339.6A CN112691415A (en) | 2019-10-23 | 2019-10-23 | Backwashing filter and cleaning method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112691415A true CN112691415A (en) | 2021-04-23 |
Family
ID=75505335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911014339.6A Pending CN112691415A (en) | 2019-10-23 | 2019-10-23 | Backwashing filter and cleaning method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112691415A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113499616A (en) * | 2021-09-08 | 2021-10-15 | 启东市建筑机械厂有限公司 | Construction effluent treatment plant |
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| CN205495080U (en) * | 2016-04-11 | 2016-08-24 | 温州菲德石化科技有限公司 | Self -cleaning net filter |
| CN212039166U (en) * | 2019-10-23 | 2020-12-01 | 揭阳市蓝润科技有限公司 | Improved backwashing filter |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4030084A1 (en) * | 1990-09-22 | 1992-03-26 | Boll & Kirch Filter | Cleaning fluid filters by low pressure filtrate reverse flow - using turntable mounted rinser rotated by drive unit and drawing filtrate from inlet |
| CN2598614Y (en) * | 2003-01-22 | 2004-01-14 | 刘鸿才 | Water filter |
| CN101607155A (en) * | 2008-06-19 | 2009-12-23 | 北京中天油石油天然气科技有限公司 | Self-cleaning filter |
| CN104857762A (en) * | 2015-04-28 | 2015-08-26 | 安庆市紫韵电子商务有限公司 | Reverse cleaning filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113499616A (en) * | 2021-09-08 | 2021-10-15 | 启东市建筑机械厂有限公司 | Construction effluent treatment plant |
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