CN107952271A - continuous self-washing filter - Google Patents
continuous self-washing filter Download PDFInfo
- Publication number
- CN107952271A CN107952271A CN201610963632.7A CN201610963632A CN107952271A CN 107952271 A CN107952271 A CN 107952271A CN 201610963632 A CN201610963632 A CN 201610963632A CN 107952271 A CN107952271 A CN 107952271A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- jet
- air
- continuous self
- washing filter
- 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.)
- Granted
Links
- 238000005406 washing Methods 0.000 title claims abstract description 29
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 9
- 231100000719 pollutant Toxicity 0.000 claims abstract description 9
- 238000005086 pumping Methods 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 10
- 239000012530 fluid Substances 0.000 description 8
- 238000005111 flow chemistry technique Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/001—Filters in combination with devices for the removal of gas, air purge systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/28—Strainers not provided for elsewhere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
-
- 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
Landscapes
- 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)
- Filtration Of Liquid (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Nozzles (AREA)
Abstract
The present invention provides a kind of filter, the filter is the continuous self-washing filter (100) for removing pollutant when pumping Zhi Liushui, its first jet (120a) and second nozzle (120b) alternately discharge air, so as to which while can continuously be pumped by immersible pump (200), self-cleaning can be carried out.
Description
Technical field
The present invention relates to the continuous self-washing filter that can be used in branch flow processing method.
Background technology
Filter (strainer) is the device for removing the foreign matter that included in the fluid of flowing and particle is big.
With reference to Fig. 1, illustrate carrying out pollution level high Zhi Liushui method (that is, the branch to flowing into river of water process
The method for treating water of stream) in the filter that uses.
Storage dam is set in the downstream in tributary, and the Zhi Liushui 200 of the upstream side of storage dam will be stored in using immersible pump
Pump to be transmitted to treatment facility 300.Filtration treatment is carried out to the Zhi Liushui for being sent to treatment facility 300, by sludge in addition
Store and discharge, and processing water is supplied again to Zhi Liushui.
Filter 100 is arranged on the upper end of immersible pump 200.This is because in the case of no filter 100, worry
Pollutant included in Zhi Liushui can block immersible pump 200 or even delivery pipe.
In general, filter 100 includes net (mesh), the pollutant included in Zhi Liushui is stuck in the net of filter 100
(mesh) on, so that strainability declines, or possibly Zhi Liushui can not be sucked, it is therefore desirable to clean the net of filter 100.
Japanese Patent Publication the 2003-305316th discloses following self-washing filter (self-washing type
strainer))：By compressor 190 to filter 100 supply air after, by backwash (backwashing) to net into
Row physical cleaning.
Here, both nozzles and immersible pump being connected with outside condenser are provided with the inner side of filter 100.Immersible pump
The fluid of filter 100 is aspirated through, nozzle discharges the air supplied by compressor in the opposite direction along with fluid suction side,
To be backwashed to net.
However, in the above prior art, since nozzle and immersible pump are all located at the inner side of filter, the sky of nozzle
The fluid of gas discharge direction and immersible pump suction direction is opposite.This is that net is carried out to backwash necessary structure.
But due to this structure, cause in the case where being backwashed by nozzle to film, immersible pump can not be together
Work.When working at the same time, since the air discharge direction of nozzle and the fluid suction direction of immersible pump are led on the contrary, therefore reducing
The backwash effect of nozzle is crossed, or reduces the fluid soakage of immersible pump.If backwash effect reduces, under fluid soakage
Drop, therefore the result is that the pumping efficiency of immersible pump reduces.Meanwhile compressor and immersible pump can keep excess load, and used
Power can increase, so as to increase operating cost.
Especially when the low immersible pump of pumping efficiency is applied to branch flow processing method as shown in Figure 1, exist as
Lower problem：The treatment effeciency for the treatment of facility 300 also reduces identical degree together, therefore the whole efficiency of branch stream treatment also drops
It is low.
That is, original intention is to reduce the pollution netted to improve pumping efficiency, so by the backwash of self-washing filter
And due to the fluid of backwash direction and immersible pump suction direction on the contrary, therefore the result is that even if using self-washing filter,
Pumping efficiency can not be improved and cause tributary water treatment efficiency to reduce.
[prior art literature]
[patent document]
(patent document 1) JP2003-305316A
(patent document 2) JP1994-068440U
(patent document 3) JP1980-020638A
The content of the invention
Technical problem
The present invention is to propose to solve the above-mentioned problems.
Specifically, it is intended to propose same to enable filter to be backwashed using self-washing filter the advantages of
When do not reduce immersible pump efficiency continuous self-washing filter.
Technological means
To solve the above-mentioned problems, one embodiment of the invention provides a kind of continuous self-washing filter, described continuous
Self-washing filter be for when pump Zhi Liushui removal pollutant continuous self-washing filter 100, the filter 100
Including：Be arranged on the filter 100 net 111,112,113,114 on directive side；It is arranged on the filtering
A part of net of first jet 120a and second nozzle 120b, the first jet 120a into the net of the inner side of device 100
Discharge air, another part net discharge air of the second nozzle 120b into the net；To the first jet 120a and
The compressor 190 of the second nozzle 120b supplies air；And the tributary water pump for flowing into the inner side of filter 100 is sent to
The immersible pump 200 for the treatment of facility 300, wherein, the first jet 120a and the second nozzle 120b alternately discharge air.
Moreover it is preferred that the first jet 120a and second nozzle 120b distinguishes two-way discharge air, Er Qiesuo
It is 90 degree to state the angle between the direction of first jet 120a and second nozzle 120b discharge air.
Moreover it is preferred that the first jet 120a is connected with the compressor 190 by air hose 130a, described
Two nozzle 120b are connected with the compressor 190 by another air hose 130b, and the air is arranged on by opening and closing
Valve V, the first jet 120a and the second nozzle 120b on pipe 130a, 130b alternately discharge air.
Moreover it is preferred that by the first jet 120a and second nozzle 120b with reference to and integrated spray nozzle is provided
140。
Moreover it is preferred that multiple outlets 141,142,143,144 are set on the integrated spray nozzle 140, so that portion
Outlet 141,143 is divided to perform the function of the first jet 120a, and other outlets 142,144 perform the second nozzle
The function of 120b, the section outlet 141,143 and other described outlets 142,144 alternately discharge air.
Moreover it is preferred that the integrated spray nozzle 140 and the compressor 190 are connected by air hose 150, described
The inner side of integrated spray nozzle 140 sets three-way valve, by the work of the three-way valve, the section outlet 141,143 and institute
State other outlets 142,144 and alternately discharge air.
Moreover it is preferred that the filter 100 is hexahedron, the net 111,112,113,114 is arranged on the filtering
On four sides of device 100.
Moreover it is preferred that the immersible pump 200 and the treatment facility 300 are connected by tributary current road 210, in institute
State to set in tributary current road 210 and be used to sense the sensor S1 of flow or hydraulic pressure per hour, sensed in the sensor S1
Flow per hour or in the case that hydraulic pressure is less than a reference value that has set, the compressor 190 works, so that first spray
Any one of mouth 120a and the second nozzle 120b discharge air, in the sensor S1 flows per hour sensed or
In the case that hydraulic pressure exceedes a reference value set, the compressor 190 is stopped, so that the first jet 120a and institute
State any one described suspension discharge air in second nozzle 120b.
In addition, after the compressor 190 is stopped, in the sensor S1 flows per hour sensed or hydraulic pressure
In the case of again less than a reference value set, the compressor 190 works, the first jet 120a and described
Another nozzle air bleed outside any one for discharging air first in two nozzle 120b.
Beneficial effect
By the present invention, filter can be backwashed voluntarily, it is not necessary to for cleaning the single equipment of filter
Investment and special operation, therefore there is economic benefit.
In addition, the work of immersible pump need not be stopped when filter is backwashed, therefore can continuously run.
Therefore, when filter according to the present invention is applied to branch flow processing method, it is not necessary in order to clean filtering
Device and interrupt branch stream treatment, therefore branch stream treatment can be carried out with excellent efficiency.
Brief description of the drawings
Fig. 1 is the figure for illustrating branch flow processing method.
Fig. 2 is the schematic perspective view of filter according to the present invention.
Fig. 3 A and Fig. 3 B are the plans of filter nozzle, according to the present invention for illustrating to work alternatively.
Fig. 4 is the schematic sectional view of filter according to the present invention.
Fig. 5 is the schematic perspective view of filter according to another embodiment of the present invention.
Fig. 6 is the schematic perspective view of filter according to still another embodiment of the invention.
Embodiment
With reference to Fig. 2 to Fig. 4 explanations continuous self-washing filter according to the present invention.
Continuous self-washing filter 100 is used to remove pollutant when pumping Zhi Liushui according to the present invention, including sets
Filter 100 net 111,112,113,114 on directive side.That is, it is hexahedron in filter 100
In the case of, net 111,112,113,114 is set on four sides.A pair of of net 111,113 and a pair of of net 112,114 mutual faces
It is right.
It is as described above important in branch flow processing method in a manner of omnirange sets net 111,112,113,114
's.This is because as shown in Figure 1, stopped using storage dam behind tributary in the case of pumping Zhi Liushui, the pollutant of Zhi Liushui
Quite a lot of, in the case where only setting net in one direction, pollution is formed comparatively fast and the lifetime of net.
Filter 100 includes the first jet 120a and second nozzle 120b for being arranged on the inner side of filter 100, this first
Nozzle 120a discharges air to a part of net 111,113, and second nozzle 120b discharges air to another part net 112,114.
Two-way setting is used for the outlet 121,123 for discharging air on first jet 120a, similarly, in second nozzle
Also two-way setting is used for the outlet 122,124 for discharging air on 120b.
Wherein, the angle between the direction of first jet 120a and second nozzle 120b discharges air is 90 degree.
It is additionally provided with the compressor 190 for supplying air to first jet 120a and second nozzle 120b.
First jet 120a is connected with compressor 190 by air hose 130a, and second nozzle 120b and compressor 190 pass through
Another air hose 130b connections.By opening and closing the valve V being arranged on air hose 130a, 130b, to control air respectively
The flowing of pipe 130a, 130b.Valve can be arranged on each air hose, can also be separately provided.
In addition, the tributary water pump of the inner side of inflow filter 100 is sent to by treatment facility 300 by immersible pump 200.
Filter 100 according to the present invention is characterized in that first jet 120a and second nozzle 120b alternately discharge sky
Gas.
As shown in Figure 3A, if only making first jet 120a work, net 111,113 is backwashed.In this case,
While forming negative relative in the inner side of filter 100, Zhi Liushui travels naturally through other nets 112,114 inflow filters
100 inner side is simultaneously pumped by immersible pump 200.
In this process, although net 111,113 is cleaned and removes pollutant, the net 112,114 of influent water
Continue to be contaminated.
Then, completed in first jet 120a after air discharges and clean net 111,113, as shown in Figure 3B, only make the
Two nozzle 120b work to be backwashed to net 112,114.In this case, formed again in the inner side of filter 100 negative
Pressure, while Zhi Liushui is flowed into by the net 111,113 after cleaning.
Similarly, in this process, while net 112,114 is cleaned to remove pollutant, the net of influent water
111st, 113 is contaminated.
Therefore, air is alternately discharged by first jet 120a and second nozzle 120b, cleans a part of net and tributary
Water is flowed into by others net, therefore continuous work and self-cleaning can be carried out at the same time.
Specifically, set in the tributary current road 210 of connection immersible pump 200 and treatment facility 300 and be used to sense tributary
The water sensor S1 of flow or hydraulic pressure per hour, to carry out automated control based on the information sensed at this.
That is, when the sensor S1 flows per hour sensed or hydraulic pressure are less than a reference value set, meaning
Needs to clean pollution, therefore compressor 190 works with any into first jet 120a and second nozzle 120b
Person discharges air, so as to start to clean.
Being assumed to be makes first jet 120a work clean the situation of net 111,113.
The cleaning of net 111,113 is carried out if over continuing for pump time, then sensor S1 is sensed per hour
Flow or hydraulic pressure increase.In the case where the value sensed exceedes a reference value set, compressor 190 is stopped and stops
Discharge air.
Hereafter, if pump time further continues, pollution is formed again.Therefore, sensed in sensor S1 every small
In the case that Shi Liuliang or hydraulic pressure are again less than a reference value set, compressor 190 is worked, and make first jet 120a and
Another nozzle air bleed outside any of the above-described person for discharging air first in second nozzle 120b.In the feelings of foregoing hypothesis
Under condition, second nozzle 120b work is set to clean net 112,114.
The cleaning of net 112,114 can be carried out with continuing for pump time.Hereafter, sensed in sensor S1 every small
In the case that Shi Liuliang or hydraulic pressure exceed a reference value set, compressor 190 is stopped and stop to discharge air.
Hereafter, in the case where needing to clean again, first jet 120a is made to work.
With reference to Fig. 5, illustrate continuous self-washing filter 100' according to another embodiment of the present invention.Shown in Fig. 2
Embodiment is different, there is provided the integrated spray nozzle 140 that first jet and second nozzle combine.
Multiple outlets 141,142,143,144 are set on integrated spray nozzle 140, so that section outlet 141,143
The function of first jet is performed, and other outlets 142,144 perform the function of second nozzle.
Similarly, section outlet 141,143 and other outlets 142,144 alternately discharge air, with alternately clear
Wash net 111,113 and net 112,114.
In order to alternately be controlled, it is preferable that in the air being connected between integrated spray nozzle 140 and compressor 190
Three-way valve (not shown) is set on pipe 150.By the work of three-way valve, section outlet 141,143 and other outlets 142,
144 alternately discharge air.
With reference to Fig. 6, illustrate continuous self-washing filter 100 according to still another embodiment of the invention ".
Filter 100 shown in Fig. 6 " is not hexahedral shape but cylindrical, and similarly, filter 100 " includes multiple
Film, so as to being achieved alternatively cleaning and the inflow of tributary water.
Although it is not shown, can also be any shapes such as pentagonal prism, hexagonal prisms.
More than, in the present specification, the invention has been described for the embodiment referring to the drawings shown in, so that the technology of this area
Personnel can easily understand that and implement the present invention, but this is only exemplary, it will be understood to those skilled in the art that can
Various modifications are carried out according to an embodiment of the invention and make equivalent other embodiment.Therefore, protection scope of the present invention should
Determined according to the scope of claims.
[explanation of reference numeral]
100,100',100":Filter
111,112,113,114:Net
120a:First jet
120b:Second nozzle
121,122,123,124:Outlet
130a,130b:Air hose
140:Integrated spray nozzle
141,142,143,144:Outlet
150:Air hose
190:Compressor
200:Immersible pump
210:Tributary current road
300:Treatment facility
Claims (9)
1. a kind of continuous self-washing filter, the continuous self-washing filter is for removing pollutant when pumping Zhi Liushui
Continuous self-washing filter (100), wherein, the continuous self-washing filter (100) includes：
Be arranged on the filter (100) net (111,112,113,114) on directive side；
It is arranged on the first jet (120a) and second nozzle (120b) of the inner side of the filter (100), the first jet
The part net discharge air of (120a) into the net, another part net row of the second nozzle (120b) into the net
Go out air；
To the first jet (120a) and the compressor (190) of the second nozzle (120b) supply air；And
The tributary water pump flowed on the inside of the filter (100) is sent to the immersible pump (200) for the treatment of facility (300),
Wherein, the first jet (120a) and the second nozzle (120b) alternately discharge air.
2. continuous self-washing filter according to claim 1, wherein, the first jet (120a) and second spray
Mouth (120b) two-way discharge air, and the first jet (120a) and the second nozzle (120b) discharge air respectively
Angle between direction is 90 degree.
3. continuous self-washing filter according to claim 1, wherein, the first jet (120a) and the compressor
(190) connected by air hose (130a), the second nozzle (120b) and the compressor (190) pass through another air hose
(130b) is connected, by opening and closing the valve (V) being arranged on the air hose (130a, 130b), the first jet
(120a) and the second nozzle (120b) alternately discharge air.
4. continuous self-washing filter according to claim 1, wherein, by the first jet (120a) and described second
Nozzle (120b) with reference to and integrated spray nozzle (140) is provided.
5. continuous self-washing filter according to claim 4, wherein, set on the integrated spray nozzle (140) more
A outlet (141,142,143,144), section outlet (141,143) perform the function of the first jet (120a), and
Other outlets (142,144) perform the function of the second nozzle (120b),
The section outlet (141,143) and other described outlets (142,144) alternately discharge air.
6. continuous self-washing filter according to claim 5, wherein, the integrated spray nozzle (140) and the compression
Machine (190) is connected by air hose (150), is set three-way valve in the inner side of the integrated spray nozzle (140), is passed through the three-dimensional
The work of valve, the section outlet (141,143) and other described outlets (142,144) alternately discharge air.
7. continuous self-washing filter according to claim 1, wherein, the filter (100) is hexahedron,
The net (111,112,113,114) is arranged on four sides of the filter (100).
8. continuous self-washing filter according to any one of claim 1 to 7, wherein, the immersible pump (200) and institute
Treatment facility (300) is stated to connect by tributary current road (210),
Set in the tributary current road (210) and be used to sense the sensor of flow or hydraulic pressure (S1) per hour,
In the case where the flow per hour or hydraulic pressure that the sensor (S1) is sensed are less than a reference value set, make described
Compressor (190) works, so that the discharge of any one of the first jet (120a) and the second nozzle (120b) is empty
Gas,
In the case where the flow per hour or hydraulic pressure that the sensor (S1) is sensed exceed a reference value set, make described
Compressor (190) is stopped, so that described any in the first jet (120a) and the second nozzle (120b)
Person stops discharge air.
9. continuous self-washing filter according to claim 8, wherein, after the compressor (190) is stopped,
In the case that the flow per hour or hydraulic pressure that the sensor (S1) is sensed are again less than a reference value set, make institute
Compressor (190) work is stated, and makes the air of discharge first in the first jet (120a) and the second nozzle (120b)
Another nozzle air bleed outside any one.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2016-0133781 | 2016-10-14 | ||
| KR1020160133781A KR101889073B1 (en) | 2016-10-14 | 2016-10-14 | A self-washing type strainer for continuous process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107952271A true CN107952271A (en) | 2018-04-24 |
| CN107952271B CN107952271B (en) | 2020-02-07 |
Family
ID=61953439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610963632.7A Expired - Fee Related CN107952271B (en) | 2016-10-14 | 2016-10-28 | Continuous self-cleaning filter |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101889073B1 (en) |
| CN (1) | CN107952271B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111617533A (en) * | 2020-06-09 | 2020-09-04 | 北京华宇辉煌生态环保科技股份有限公司 | General double-cylinder immersible pump is from clear filter equipment |
| WO2022000035A1 (en) * | 2020-07-01 | 2022-01-06 | Mountain Road Trading Pty Ltd | Pump strainer with pneumatic cleaning |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1134119A (en) * | 1993-10-27 | 1996-10-23 | 梅姆泰克有限公司 | Method and apparatus for recovering water from sewer main |
| JP2003305316A (en) * | 2002-04-11 | 2003-10-28 | Takashi Yamamoto | Self-cleaning strainer and aeration device using the same |
| JP2005013779A (en) * | 2003-06-23 | 2005-01-20 | Daido Steel Co Ltd | Filter |
| US20070227956A1 (en) * | 2006-03-31 | 2007-10-04 | Wietham Robert J | Self-cleaning screen with check valve for use in shallow water pumping |
| CN103041637A (en) * | 2012-12-31 | 2013-04-17 | 上海安赐机械设备有限公司 | Scraping disc filtering device applicable to wastewater treatment in PTA industry and technology |
| CN104174200A (en) * | 2014-07-31 | 2014-12-03 | 美盛隆制罐（惠州）有限公司 | Backwashing filter |
| CN205042213U (en) * | 2015-08-25 | 2016-02-24 | 东莞安默琳机械制造技术有限公司 | Backwashing filter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5520638A (en) | 1978-08-01 | 1980-02-14 | Toshiba Corp | Suction disturbing material isolating method of suction part mesh and device thereof |
| JPH0668440U (en) | 1993-03-08 | 1994-09-27 | 恒 森田 | Aquarium air supply |
| EP1485181B1 (en) * | 2002-02-21 | 2007-09-12 | Gordon Construction, Inc. | Self-cleaning fluid filter system |
-
2016
- 2016-10-14 KR KR1020160133781A patent/KR101889073B1/en active IP Right Grant
- 2016-10-28 CN CN201610963632.7A patent/CN107952271B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1134119A (en) * | 1993-10-27 | 1996-10-23 | 梅姆泰克有限公司 | Method and apparatus for recovering water from sewer main |
| CN1068238C (en) * | 1993-10-27 | 2001-07-11 | Crc废物处理及排污控制有限公司 | Method and apparatus for recovering water from sewer main |
| JP2003305316A (en) * | 2002-04-11 | 2003-10-28 | Takashi Yamamoto | Self-cleaning strainer and aeration device using the same |
| JP2005013779A (en) * | 2003-06-23 | 2005-01-20 | Daido Steel Co Ltd | Filter |
| US20070227956A1 (en) * | 2006-03-31 | 2007-10-04 | Wietham Robert J | Self-cleaning screen with check valve for use in shallow water pumping |
| CN103041637A (en) * | 2012-12-31 | 2013-04-17 | 上海安赐机械设备有限公司 | Scraping disc filtering device applicable to wastewater treatment in PTA industry and technology |
| CN104174200A (en) * | 2014-07-31 | 2014-12-03 | 美盛隆制罐（惠州）有限公司 | Backwashing filter |
| CN205042213U (en) * | 2015-08-25 | 2016-02-24 | 东莞安默琳机械制造技术有限公司 | Backwashing filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111617533A (en) * | 2020-06-09 | 2020-09-04 | 北京华宇辉煌生态环保科技股份有限公司 | General double-cylinder immersible pump is from clear filter equipment |
| WO2022000035A1 (en) * | 2020-07-01 | 2022-01-06 | Mountain Road Trading Pty Ltd | Pump strainer with pneumatic cleaning |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20180041517A (en) | 2018-04-24 |
| CN107952271B (en) | 2020-02-07 |
| KR101889073B1 (en) | 2018-08-16 |
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