CN102784504B - Automatic backwashing system in filtering device with multi filter drums - Google Patents
Automatic backwashing system in filtering device with multi filter drums Download PDFInfo
- Publication number
- CN102784504B CN102784504B CN201210304909.7A CN201210304909A CN102784504B CN 102784504 B CN102784504 B CN 102784504B CN 201210304909 A CN201210304909 A CN 201210304909A CN 102784504 B CN102784504 B CN 102784504B
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- filter
- fixed
- main shaft
- lower bearing
- cylinder
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- Expired - Fee Related
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- 238000001914 filtration Methods 0.000 title abstract description 16
- 238000011001 backwashing Methods 0.000 title abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000009471 action Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 230000003028 elevating effect Effects 0.000 claims description 19
- 239000010865 sewage Substances 0.000 claims description 16
- 238000002788 crimping Methods 0.000 claims description 3
- 235000015111 chews Nutrition 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/668—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with valves, e.g. rotating valves for coaxially placed filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/114—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/04—Supports for the filtering elements
- B01D2201/043—Filter tubes connected to plates
- B01D2201/0453—Filter tubes connected to plates positioned between at least two plates
Abstract
The invention discloses an automatic backwashing system in a filtering device with multi filter drums. The automatic backwashing system is characterized in that: a motor drives a main shaft to rotate; a lifting system drives a rotating shaft to ascend and descend; a multi-way connecting base connects the main shaft, a rotary arm and a drainage pipe together; the main shaft drives the rotary arm to ascend and descend and rotate; the drainage pipe stays still; a suction nozzle, which can be connected with a water inlet on a separating plate in a sealing way, is fixed at an upper port of the rotary arm; an end of the drainage pipe is connected with an electric drainage valve or a pneumatic drainage valve; and a control system controls action of the motor, the lifting mechanism and the electric drainage valve or the pneumatic drainage valve. By using the filtering device disclosed by the invention, when one filter drum backwashes, other filter drums keep on filtering, therefore, water yield is not influenced at all; since backwashing water flow is high in magnitude, filter screens of the filter drums can be washed more cleanly and more thoroughly, therefore, the backwashing effect is good, the backwashing frequency is low, and the backwashing water can be saved; during rotation of the automatic backwashing system, the suction nozzle and the separating plate are separated, thus relative friction between the suction nozzle and the separating plate can be avoided, and the service life of the suction nozzle can be prolonged; and in addition, all components are connected mutually with high reliability and good sealing performance.
Description
Technical field
The present invention relates to the automatic backwash system in a kind of many filter cylinders filter.
Background technology
In fields such as metallurgy, electric power, oil, chemical industry, medicine, food, printing and dyeing, papermaking, urban water supply, central air-conditioning, river water cleaning, middle water treatment, agricultural irrigation, sewage disposals, filter plant is widely used in filtration and the separation process of the fluids such as water, emulsion in various lubricated, cooling, production systems, and what at present a lot of enterprises were used remains traditional filter plant.
The cartridge structure of traditional filter plant is the many filter element filterings structure that adopts single filter cylinder filtration or the multiple different filter cores of the inside stack mostly.Many filter element filterings equipment filters layer by layer, good filtration effect, but its filtration water yield is few, the aquifer yield of filter plant is little, filter lost efficacy after easy to clean not, when cleaning, not only take time and effort, and waste the more energy and water source, even transfer to lose efficacy because filter core is irreversible, be used for the filtration of meticulous a small amount of water.Single filter cylinder filter plant is with above-mentioned many filter element filterings equipment same volume in the situation that, and the filtration water yield is larger, and single net cartridge structure, once strainer filtering lost efficacy, be easier to clean up, continue to use, according to the size of its filter screen hole, can be used on different occasions, its range of application is wider.Its backwash adopts automatic backwash system more, and when its work, water enters from entrance, discharges from outlet through filter cylinder, and impurity is trapped within filter cylinder outer surface, and inlet outlet pressure differential increases.In the time that pressure reduction reaches setting value, automatic control system starts backwashing system, and the electrically operated valve of sewage draining exit is opened, filter cylinder rotation, and while forwarding soil pick-up groove to, backwash current from inside to outside rinse, and dirt is rinsed out, and discharge through sewage draining exit.Filter cylinder rotates a circle, and whole surface is cleaned.Backwash process finishes, the stall of blowoff valve disable motor.Still there is following shortcoming in its backwashing system: effect that (1) is counter while cleaning is poor, stops up when serious and need artificial unloading's filter cylinder to clean, labor intensive material resources; (2) must stop filtration and just can carry out backwash, the filtration water yield is few, and production efficiency is low.
Summary of the invention
Object of the present invention solves the above-mentioned problems in the prior art exactly, automatic backwash system in a kind of many filter cylinders filter is provided, adopt the filter of this backwashing system, when a filter cylinder backwash, other filter cylinder continues to filter, backwash effect is good, and backwash frequency is low, saves backwashing water, when rotation, nozzle separates with dividing plate, high, the good seal performance of connection reliability between its each parts.
For achieving the above object, technical solution of the present invention is: the automatic backwash system in a kind of many filter cylinders filter, and it comprises motor, main shaft with reductor, leads to joint chair, one or more bent-tube boiler turning arm, nozzle, blow-off pipe, pneumatic sewage drain valve or electronic blowoff valve more, elevating mechanism, two pressure sensors and Back Washing Control System; Motor with reductor and elevating mechanism are arranged on many filter cylinders filter housing top, lead to joint chair, each turning arm is positioned at filter cavity of resorption more; The output gear of reductor engages with the gear of main shaft upper end, and the output gear of reductor is thicker than mainshaft gear, and thickness difference is not less than the height that main shaft rises or falls; Be fixed on filter housing with the motor of reductor; The upper end of main shaft is provided with the elevating mechanism of controlling lifting spindle, main shaft passes through filter housing epicoele wall and dividing plate, lower end is fixed on leads in joint chair upper end open more, each turning arm lower port is separately fixed at leads on the middle each sidewall opening of joint chair more, and with lead to joint chair more and be communicated with, upper port be fixed with dividing plate on the water inlet nozzle that can be tightly connected; Lead to that joint chair lower ending opening is rotatable to be liftably fixed in filter blow-off pipe upper port more, and be communicated with blow-off pipe; Blow-off pipe passes through and seals and is fixed on housing cavity of resorption wall, and end connects electronic blowoff valve or pneumatic sewage drain valve; What two pressure sensors were arranged on respectively filter enters sewage mouth and pure water inlet place, its information output is connected on Back Washing Control System, and the output of Back Washing Control System is connected on motor, electronic blowoff valve or pneumatic sewage drain valve, the control end of elevating mechanism.
The syndeton of leading to joint chair and main shaft, each bent-tube boiler turning arm and blow-off pipe described above is more: described main shaft lower end has been bolted ring flange, lead to joint chair upper port more and be welded with ring flange, the edge of two ring flanges is fixed together by bolt, nut and pad; Each turning arm lower port is welded on leads on the middle each sidewall opening of joint chair more; Lead to joint chair lower port more and be welded with ring flange, there is the convex edge matching with the flange plate structure that leads to joint chair lower port seal upper end more, seal with lead to together with joint chair lower port is bolted more, the lower surface of convex edge, seal upper end is welded with guide pillar, seal lower end overcoat rotating ring; The inner convex platform of rotating ring lower end is connected in the fixed ring groove of filter blow-off pipe upper port, outer lug boss has the guide pillar hole matching with guide pillar, guide pillar is positioned at guide pillar hole, on guide pillar between the outer lug boss of the convex edge of seal upper end and rotating ring lower end, cover has spring, on seal and rotating ring, there is respectively corresponding seal groove, in seal groove, be crimped with sealing ring.
The structure that nozzle described above is fixed on turning arm upper port is: turning arm upper port has a ring flange, and there is a ring flange nozzle lower end, together with nozzle is bolted by ring flange with turning arm; The outer rim crimping of nozzle upper end is also adhesively fixed with the fluorubber that a circle upper end is umbrella shape and chews.
Elevating mechanism described above comprises upper and lower bearing assembly, symmetrical cam and cylinder; Upper and lower bearing assembly overcoat is fixed on the holder of filter housing upper end, and upper and lower bearing assembly inner sleeve has spindle hole; Main shaft is positioned at upper and lower bearing assembly inner sleeve spindle hole, and is fixed together with upper and lower bearing assembly inner sleeve; Cam is symmetrically distributed in the both sides of main shaft, it is positioned at lower bearing component and puts the cam hole having outward, and be hinged on lower bearing component overcoat wall by bearing pin, its eccentric one end is fixed on the cylinder piston rod that passes through lower bearing component overcoat wall, cylinder symmetry is fixed on the cylinder holder of filter housing upper end, and the action of cylinder is by control system control.
Because the present invention has adopted such scheme, it has the following advantages: 1, automatically identify pressure reduction, automatic backwash, automatic pollution discharge, operating cost low.2,, when one of them cartridge filter independent back flushing is washed, other cartridge filter continuous operation, does not affect the water outlet water yield.3, backwashing water intensity of flow is large, and the filter gauze cleaning of cartridge filter obtains more thoroughly clean, makes filter cartridge efficiency high, and backwash frequency is low.4, elevating mechanism can move up and down by driven rotary arm, and in the time that main shaft rotates, the nozzle of turning arm and water inlet depart from, and have avoided the relative friction of nozzle with dividing plate, have extended the life-span of nozzle, have stopped the equipment fault causing thus.5, Back Washing Control System perfect in shape and function, simple and reliable.Electronic or pneumatic sewage drain valve is just opened in the time of blowdown, closes, thereby effectively saved water when not blowdown, has saved water resource.
Brief description of the drawings
Fig. 1 is that the present invention is arranged on the mounting structure schematic diagram in a kind of many filter cylinders filter;
Fig. 2 is the syndeton schematic diagram of four-way Connection Block and main shaft, turning arm and blow-off pipe in the present invention;
Fig. 3 is the syndeton schematic diagram of turning arm and nozzle in the present invention;
Fig. 4 is the syndeton main sectional view of lower bearing component and cam in elevating mechanism in the present invention;
Fig. 5 is the syndeton top view of lower bearing component and cam in elevating mechanism in the present invention.
Detailed description of the invention
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, the present embodiment comprises motor 1 with reductor, main shaft 2, four-way Connection Block 12, two bent-tube boiler turning arms 11,17, nozzle 20, blow-off pipe 16, pneumatic sewage drain valve 13, elevating mechanism, two pressure sensors 29,30 and Back Washing Control System.Motor 1 with reductor and elevating mechanism are arranged on many filter cylinders filter housing 21 tops, and four-way Connection Block 12, two turning arms 11,17 are positioned at cavity of resorption.The output gear of reductor engages with the gear of main shaft 2 upper ends, and the output gear of reductor is thicker than mainshaft gear, and thickness difference is not less than the height that main shaft rises or falls.Motor 1 with reductor is fixed on filter housing 21.The upper end of main shaft 2 is provided with the elevating mechanism of controlling lifting spindle.Elevating mechanism comprises upper and lower bearing assembly, symmetrical cam 24 and cylinder 6.Upper and lower bearing assembly overcoat 4,23 is bolted on the holder 22 of filter housing 21 upper ends, and upper and lower bearing assembly inner sleeve 25,31 has spindle hole 10.Main shaft 2 is positioned at upper and lower bearing assembly inner sleeve 25,31 spindle holes 10, and is fixed together with upper and lower bearing assembly 25,31 inner sleeves.Cam 24 is symmetrically distributed in the both sides of main shaft 2, it is positioned at the cam hole 8 having on lower bearing component overcoat 23, and be hinged on lower bearing component overcoat 23 walls by bearing pin 3, its eccentric one end is fixed on the cylinder piston rod 5 that passes through lower bearing component overcoat wall, cylinder 6 symmetries are fixed on the cylinder holder of housing 21 upper ends, and the action of cylinder 6 is by control system control.18 is ball.Cam 24 is sleeping, and main shaft 2 is in extreme lower position at ordinary times, and when cam 24 is holded up, main shaft 2 is in extreme higher position.Main shaft 2 passes through filter housing 21 epicoele walls and dividing plate 27, and lower end is fixed with ring flange 32 by bolt 33, and the edge that four-way Connection Block upper port 48 is welded with ring flange 46, two ring flanges 32,46 is fixed together by bolt, nut 47 and pad.Two turning arm 17,11 lower port are welded on the each sidewall opening 45,35 in the middle of four-way Connection Block, and are communicated with four-way Connection Block 12.Four-way Connection Block lower port 36 is welded with ring flange 43, there is the convex edge 34 matching with the ring flange 43 of four-way Connection Block lower port seal 42 upper ends, seal 42 is fixed together by bolt 44 with four-way Connection Block lower port, the lower surface of seal 42 convex edges, upper end is welded with guide pillar 40, seal 42 lower end overcoat rotating rings 38.The inner convex platform of rotating ring 38 lower ends is connected in fixed ring 39 grooves of filter blow-off pipe 16 upper port, outer lug boss has the guide pillar hole matching with guide pillar 40, guide pillar 40 is positioned at guide pillar hole, on guide pillar 40 between the outer lug boss of the convex edge of seal 42 upper ends and rotating ring 38 lower ends, cover has spring 41, on seal 42 and rotating ring 38, there is respectively corresponding seal groove, in seal groove, be crimped with sealing ring 37.Two turning arm 17,11 upper port be fixed with dividing plate on water inlet 28 nozzle 20 that can be tightly connected, its fixed structure is: turning arm 17 or 11 upper port have a ring flange 49, there is a ring flange 50 nozzle 20 lower ends, together with nozzle 20 is bolted by ring flange 50,49 with turning arm 17 or 11; Nozzle 20 upper end outer rim crimping are also adhesively fixed with the fluorubber that a circle upper end is umbrella shape and chew 7.Blow-off pipe 16 passes through and seals and is fixed on filter housing 21 cavity of resorption walls, and end connects pneumatic sewage drain valve 13.What two pressure sensors 29,30 were arranged on respectively filter enters sewage mouth 19 and pure water inlet 9 places, its information output is connected on Back Washing Control System, and the output of Back Washing Control System is connected on motor 1, pneumatic sewage drain valve 13, the control end of cylinder 6.
Above-described embodiment is only preferred and exemplary, and those skilled in the art for example can adopt other structure to realize this patent according to the description of this patent, as one, three or other number of turning arm; Elevating mechanism adopts as long as ensure and only makes lifting spindle and non-rotary other structure; Lead to other syndeton of joint chair and main shaft, turning arm and blow-off pipe etc., it is all covered by the protection domain of this patent more.
Claims (5)
1. the automatic backwash system in the filter of filter cylinder more than, is characterized in that: it comprises motor, main shaft with reductor, leads to joint chair, one or more bent-tube boiler turning arm, nozzle, blow-off pipe, pneumatic sewage drain valve or electronic blowoff valve more, elevating mechanism, two pressure sensors and Back Washing Control System; Motor with reductor and elevating mechanism are arranged on many filter cylinders filter housing top, lead to joint chair, each turning arm is positioned at filter cavity of resorption more; The output gear of reductor engages with the gear of main shaft upper end, and the output gear of reductor is thicker than mainshaft gear, and thickness difference is not less than the height that main shaft rises or falls; Be fixed on filter housing with the motor of reductor; The upper end of main shaft is provided with the elevating mechanism of controlling lifting spindle, main shaft passes through filter housing epicoele wall and dividing plate, lower end is fixed on leads in joint chair upper end open more, each turning arm lower port is separately fixed at leads on the middle each sidewall opening of joint chair more, and with lead to joint chair more and be communicated with, upper port be fixed with dividing plate on the water inlet nozzle that can be tightly connected; Lead to that joint chair lower ending opening is rotatable to be liftably fixed in filter blow-off pipe upper port more, and be communicated with blow-off pipe; Blow-off pipe passes through and seals and is fixed on housing cavity of resorption wall, and end connects electronic blowoff valve or pneumatic sewage drain valve; What two pressure sensors were arranged on respectively filter enters sewage mouth and pure water inlet place, its information output is connected on Back Washing Control System, and the output of Back Washing Control System is connected on motor, electronic blowoff valve or pneumatic sewage drain valve, the control end of elevating mechanism.
2. according to the automatic backwash system in claim 1 more than filter cylinder filter, it is characterized in that: the described syndeton of leading to joint chair and main shaft, each bent-tube boiler turning arm and blow-off pipe is more: described main shaft lower end has been bolted ring flange, lead to joint chair upper port more and be welded with ring flange, the edge of two ring flanges is fixed together by bolt, nut and pad; Each turning arm lower port is welded on leads on the middle each sidewall opening of joint chair more; Lead to joint chair lower port more and be welded with ring flange, there is the convex edge matching with the flange plate structure that leads to joint chair lower port seal upper end more, seal with lead to together with joint chair lower port is bolted more, the lower surface of convex edge, seal upper end is welded with guide pillar, seal lower end overcoat rotating ring; The inner convex platform of rotating ring lower end is connected in the fixed ring groove of filter blow-off pipe upper port, outer lug boss has the guide pillar hole matching with guide pillar, guide pillar is positioned at guide pillar hole, on guide pillar between the outer lug boss of the convex edge of seal upper end and rotating ring lower end, cover has spring, on seal and rotating ring, there is respectively corresponding seal groove, in seal groove, be crimped with sealing ring.
3. according to the automatic backwash system in the many filter cylinders filter described in claim 1 or 2, it is characterized in that: the structure that described nozzle is fixed on turning arm upper port is: turning arm upper port has a ring flange, there is a ring flange nozzle lower end, together with nozzle is bolted by ring flange with turning arm; The outer rim crimping of nozzle upper end is also adhesively fixed with the fluorubber that a circle upper end is umbrella shape and chews.
4. the automatic backwash system in many filter cylinders filter according to claim 3, is characterized in that: described elevating mechanism comprises upper and lower bearing assembly, symmetrical cam and cylinder; Upper and lower bearing assembly overcoat is fixed on the holder of filter housing upper end, and upper and lower bearing assembly inner sleeve has spindle hole; Main shaft is positioned at upper and lower bearing assembly inner sleeve spindle hole, and is fixed together with upper and lower bearing assembly inner sleeve; Cam is symmetrically distributed in the both sides of main shaft, it is positioned at lower bearing component and puts the cam hole having outward, and be hinged on lower bearing component overcoat wall by bearing pin, its eccentric one end is fixed on the cylinder piston rod that passes through lower bearing component overcoat wall, cylinder symmetry is fixed on the cylinder holder of filter housing upper end, and the action of cylinder is by control system control.
5. according to the automatic backwash system in the many filter cylinders filter described in claim 1 or 2, it is characterized in that: described elevating mechanism comprises upper and lower bearing assembly, symmetrical cam and cylinder; Upper and lower bearing assembly overcoat is fixed on the holder of filter housing upper end, and upper and lower bearing assembly inner sleeve has spindle hole; Main shaft is positioned at upper and lower bearing assembly inner sleeve spindle hole, and is fixed together with upper and lower bearing assembly inner sleeve; Cam is symmetrically distributed in the both sides of main shaft, it is positioned at lower bearing component and puts the cam hole having outward, and be hinged on lower bearing component overcoat wall by bearing pin, its eccentric one end is fixed on the cylinder piston rod that passes through lower bearing component overcoat wall, cylinder symmetry is fixed on the cylinder holder of filter housing upper end, and the action of cylinder is by control system control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210304909.7A CN102784504B (en) | 2012-08-26 | 2012-08-26 | Automatic backwashing system in filtering device with multi filter drums |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210304909.7A CN102784504B (en) | 2012-08-26 | 2012-08-26 | Automatic backwashing system in filtering device with multi filter drums |
Publications (2)
| Publication Number | Publication Date |
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| CN102784504A CN102784504A (en) | 2012-11-21 |
| CN102784504B true CN102784504B (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210304909.7A Expired - Fee Related CN102784504B (en) | 2012-08-26 | 2012-08-26 | Automatic backwashing system in filtering device with multi filter drums |
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| CN102989223A (en) * | 2012-12-04 | 2013-03-27 | 南通海利源船舶设备工程有限公司 | Automatic backwash filtering device |
| CN103212232B (en) * | 2013-05-07 | 2015-07-22 | 南通海狮船舶机械有限公司 | Full-automatic high-precision back-flushing filter |
| CN103432810B (en) * | 2013-09-06 | 2015-04-01 | 上海滤威过滤系统有限公司 | Backwashing filter |
| KR102055954B1 (en) * | 2013-11-29 | 2019-12-16 | 한국조선해양 주식회사 | Filter apparatus |
| CN104307234B (en) * | 2014-11-03 | 2016-01-20 | 南通海狮船舶机械有限公司 | Ballast water treatment system high-precision full-automatic high-pressure backwash filter |
| CN109126251A (en) * | 2018-08-09 | 2019-01-04 | 温州匠振科技有限公司 | A kind of foreign body filtering and tapping equipment of automatic intelligent |
| CN109701305A (en) * | 2019-03-12 | 2019-05-03 | 中国电建集团中南勘测设计研究院有限公司 | A kind of automatic backwash blowdown water filter |
| CN110841359A (en) * | 2019-11-26 | 2020-02-28 | 无锡伊诺特过滤系统有限公司 | Back flush filter |
| CN113648715B (en) * | 2021-10-20 | 2022-02-11 | 品孚罗特过滤设备（北京）有限公司 | Continuous filtering multi-cavity alternate offline composite filtering device |
| CN115105884B (en) * | 2022-08-29 | 2022-11-15 | 上寻环保科技(云南)有限公司 | Treatment tank for sewage treatment equipment |
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| CN102784504A (en) | 2012-11-21 |
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