CN112007412A - Rotation type is automatic sweeps emulsion filter - Google Patents
Rotation type is automatic sweeps emulsion filter Download PDFInfo
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- CN112007412A CN112007412A CN201910454578.7A CN201910454578A CN112007412A CN 112007412 A CN112007412 A CN 112007412A CN 201910454578 A CN201910454578 A CN 201910454578A CN 112007412 A CN112007412 A CN 112007412A
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- filter
- emulsion
- barrel
- purging
- differential pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/067—Construction of the filtering drums, e.g. mounting or sealing arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D33/50—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/80—Accessories
- B01D33/804—Accessories integrally combined with devices for controlling the filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/80—Accessories
- B01D33/804—Accessories integrally combined with devices for controlling the filtration
- B01D33/808—Accessories integrally combined with devices for controlling the filtration by pressure measuring
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a rotary type automatic purging emulsion filter, which relates to the technical field of energy conservation and environmental protection and comprises a filter inner barrel, a filter outer barrel, a motor, a chain gear and a reduction gear box; the inner filter barrel is arranged inside the outer filter barrel, the outer filter barrel is welded with a support, the support is provided with a motor, the motor is connected with a reduction gear box, an output shaft reduced by the reduction gear box is provided with a chain gear, the chain gear is connected with the inner filter barrel through a chain, and the motor drives the inner filter barrel to rotate. The invention has large sprayed steam purging area by the left and right rows of nozzles, the filter screen is made into a rotary barrel and is driven by a motor to rotate and purge at the same time in the purging process, the whole surface of the filter screen is purged cleanly, and the filter and even the whole emulsification treatment system are ensured not to be blocked; the waste emulsion can be treated, so that the waste emulsion is changed into valuable, and the energy-saving and environment-friendly effects are achieved.
Description
Technical Field
The invention relates to the technical field of energy conservation and environmental protection, in particular to a rotary type automatic purging emulsion filter.
Background
Emulsions are widely used in metal processing processes such as grinding, electro-mechanical, machining, metallurgy, forging, etc., and the emulsions are mainly used for lubrication, cooling, surface cleaning, and corrosion prevention, so that it is necessary to produce a large amount of waste emulsions (also called waste oils) mainly composed of water, mechanical impurities, base oils (mineral oils, vegetable oils, and synthetic oils), fatty acids, surfactants, corrosion inhibitors, various additives, and the like. In industrial production, with the circulation and wide use of the emulsion, the emulsion is deteriorated due to the alternation of cold and hot water, the microbial degradation, the mixing of dust, iron scraps and impurities, so that the original characteristics and effectiveness of the emulsion are lost, and the emulsion needs to be replaced periodically, so that more waste emulsion is continuously generated.
The waste emulsion is generally alkaline, and due to more surfactants and organic additives, the COD value and the BOD value of the waste emulsion are seriously exceeded, and if the waste emulsion is improperly treated, the health and the ecological environment of a human body are seriously harmed. The waste emulsion generated by steel-making enterprises every year is huge, in the case of a large steel-making enterprise, the waste emulsion generated every year is usually not less than 4000 tons, and at present, the emulsion is used as waste to perform paid recovery treatment for specially qualified emulsion treatment enterprises, namely, the enterprises generating the waste emulsion spend a large amount of capital for treatment every year. In particular, in recent years, the country has paid more attention to environmental protection and has strengthened waste oil management, in particular, waste oil is taken into the range of hazardous waste, namely, a unit which has to have the disposal qualification of hazardous waste is qualified for treatment. Meanwhile, the disposal cost of the waste oil is high, the disposal cost of each ton of the waste oil reaches more than 7 thousand RMB, and the cost of each ton of the waste oil reaches 3000 ten thousand RMB every year.
Further, most of the waste oil-producing companies have waste oil disposal facilities, but cannot perform waste oil disposal because they cannot obtain the disposal quality of national hazardous wastes. Most domestic enterprises using emulsion are confronted with the difficulties of large waste oil amount, high disposal cost and incapability of effective disposal.
In addition, the waste emulsion has too high contents of carbide, various impurities and water, and is generally recycled after regeneration and purification treatment. The conventional purification and regeneration methods for emulsion are roughly divided into physical methods (including precipitation, centrifugation, filtration, distillation, water washing, vacuum purification and electrostatic purification) and chemical methods (mainly sulfuric acid purification), and also physical and chemical methods are combined to generate physicochemical methods for regeneration (including coagulation, alkali neutralization, adsorption and the like).
In the traditional disposal method, the waste gas utilization efficiency and the combustion efficiency are low, generally speaking, the combustion efficiency of the waste emulsion in a furnace is only about 45%, and the waste emulsion has higher requirements on the combustible content (namely the calorific value) of the waste oil, otherwise, the waste emulsion cannot be combusted, meanwhile, the waste gas generated in the disposal process is difficult to recycle, and the defect of generating a large amount of harmful waste gas is also existed. Although the treatment mode is improved compared with the treatment mode, the purposes of consuming and disposing the waste emulsion can be achieved, but the heat energy of the waste emulsion cannot be fully utilized due to short combustion stroke and low efficiency in the furnace, the pollution of furnace walls and flues and the pollution of the atmospheric environment can be caused, the utilization of renewable energy sources cannot be realized, and the popularization and the use cannot be realized.
Disclosure of Invention
Technical problem to be solved
The invention provides a rotary type automatic purging emulsion filter, which can treat waste emulsion, changes waste emulsion into valuable, and is energy-saving and environment-friendly.
(II) technical scheme
A rotary type automatic purging emulsion filter comprises a filter inner barrel, a filter outer barrel, a motor, a chain gear and a reduction gear box; the inner filter barrel is arranged inside the outer filter barrel, the outer filter barrel is welded with a support, the support is provided with a motor, the motor is connected with a reduction gear box, an output shaft reduced by the reduction gear box is provided with a chain gear, the chain gear is connected with the inner filter barrel through a chain, and the motor drives the inner filter barrel to rotate.
According to an embodiment of the invention, a gear housing is mounted on the chain and the chain gear.
According to an embodiment of the invention, the inner barrel of the filter comprises a filter screen frame, a filter screen upper end cover plate, a filter screen lower end cover plate and an outlet after the emulsion at the lower end is filtered; the inner barrel of the filter is covered by a filter screen frame and an outer filter screen, and then is formed by welding a filter screen upper end cover plate and a filter screen frame by a filter screen upper end cover plate and a filter screen lower end cover plate and welding the filter screen frame by the filter screen lower end cover plate; the lower part of the filter inner barrel is provided with an outlet of which the lower end emulsion is filtered.
According to an embodiment of the present invention, the screen frame is formed by welding stainless steel plates with rows of holes rolled into a barrel shape.
According to an embodiment of the invention, the filter outer barrel is supported by a lower end bearing and an upper end bearing, the upper end bearing penetrates through an upper end cover plate of the filter and is provided with a chain gear, and the filter outer barrel and the upper end cover plate of the filter are sealed by a shaft; the lower part of the outer barrel of the filter is provided with a funnel-shaped cover plate and a shaft seal, and the funnel-shaped cover plate is connected with a drain pipe and a drain valve.
According to an embodiment of the invention, the outer barrel of the filter is provided with an emulsion inlet pipe and an emulsion outlet pipe, the emulsion inlet pipe is provided with an emulsion inlet valve, and the emulsion outlet pipe is provided with an emulsion outlet valve; the left row of steam purging nozzles and the right row of steam purging nozzles are respectively installed at the left end and the right end of the outer barrel of the filter, the left row of steam purging nozzles are provided with the left row of steam purging nozzles, the right row of steam purging nozzles are provided with the right row of steam purging nozzles, and the heights of the right row of steam purging nozzles and the left row of steam purging nozzles are the same as the height of the outer barrel of the filter.
According to an embodiment of the present invention, a steam purge valve is further disposed on the filter outer barrel.
According to an embodiment of the invention, the purging emulsion filter comprises an emulsion differential pressure transmitter, an emulsion differential pressure transmitter instrument tube is respectively arranged on an emulsion inlet pipe and an emulsion outlet pipe, the emulsion differential pressure transmitter instrument tube is connected with the emulsion differential pressure transmitter, and the emulsion differential pressure transmitter is used for monitoring the differential pressure change condition of the filter barrel.
According to one embodiment of the invention, the emulsion differential pressure transmitter is a diaphragm differential pressure transmitter.
According to an embodiment of the invention, the purging emulsion filter further comprises a control box, the control box is used for controlling the filter to be in a filtering state of operation, and when the emulsion differential pressure transmitter detects that the differential pressure between the emulsion inlet and the emulsion outlet is greater than a certain value, the control box is used for controlling the emulsion inlet valve to be closed; closing the emulsion outlet valve; opening a filter blow-down valve; opening the right row of steam blowing nozzles and the left row of steam blowing nozzles, and starting the motor; the motor drives the inner barrel of the filter to rotate through the chain, each corner of the rotary filter screen is swept, and the sweeping is finished after 30 minutes.
(III) advantageous effects
The rotary type automatic purging emulsion filter provided by the invention has the advantages that the spraying steam purging area is large due to the left and right rows of nozzles, the filter screen is made into a rotary barrel and is driven by the motor to rotate and purge at the same time in the purging process, the whole surface of the filter screen is completely purged, and the filter and even the whole emulsion treatment system are not blocked; the invention can treat the waste emulsion, changes the waste emulsion into valuables, and is energy-saving and environment-friendly.
Drawings
In the present invention, like reference numerals refer to like features throughout, wherein:
FIG. 1 is a front view of an emulsion filter;
FIG. 2 is a schematic view of the inner barrel structure of the filter;
FIG. 3 is a left side view of the emulsion filter;
fig. 4 is a top view of the emulsion filter.
Description of reference numerals:
1. a screen frame; 2. filtering with a screen; 3. a cover plate at the upper end of the filter screen; 4. the upper end cover plate of the filter screen is welded with the filter screen frame; 5. a cover plate at the lower end of the filter screen; 6. an outlet for filtering the emulsion at the lower end; 7. the lower end cover plate of the filter screen is welded with the filter screen frame; 8. a row of steam blowing nozzles are arranged on the right; 9. the left row of steam purge nozzles; 10. a steam purge valve; 11. a lower end bearing; 12. a blowoff valve; 13. a cover plate at the upper end of the filter; 14. an upper end bearing; 15. a filter outer tub; 16. a chain; 17. a chain gear; 18. a reduction gear box; 19. a motor; 20. an emulsion outlet valve; 21. an emulsion inlet valve; 22. a gear housing; 23. the left row of steam purge nozzles; 24. a row of steam blowing nozzles are arranged on the right; 25. an emulsion differential pressure transmitter instrumentation tube; 26. and an emulsion differential pressure transmitter.
Detailed Description
The technical scheme of the invention is further explained by combining the drawings and the embodiment.
Because the waste emulsion has more complex components and high viscosity, the waste emulsion sometimes exists in liquid in the form of floccule and can be coagulated into paste at low temperature in winter. The emulsion must therefore be subjected to rigorous filtration before it can be processed. Otherwise, if the emulsion impurities enter the system, instruments, oil guns, valves and pipelines of the system need to be blocked. The impurity of adhesion is more and more on filtering the filter screen after a period of time filters, and the resistance is bigger and bigger, and the electric current of oil transfer pump also can the grow, must in time report to the police and sweep with steam, blows the impurity of adhesion on the filter screen to the sump oil pond in, after a period of time to the filter sweep the back of decontaminating, gets back to again and carry the emulsion procedure. The treated emulsion can be directly and specially used for regenerative power generation of power plants or power enterprises. Thus, better combustion and utilization of the emulsion can be ensured, and an optimized environment-friendly effect can be achieved.
Referring to fig. 1, a rotary type automatic purging emulsion filter comprises a filter inner barrel, a filter outer barrel 15, a motor 19, a chain 16, a chain gear 17, a reduction gear box 18 and a gear housing 22; the filter inner barrel is arranged inside the filter outer barrel 15, a support is welded on the filter outer barrel 15, a motor 19 is arranged on the support, the motor 19 is connected with a reduction gear box 18, a chain gear 17 is arranged on an output shaft reduced by the reduction gear box 18, the chain gear 17 is connected with the filter inner barrel through a chain 16, the filter inner barrel is driven by the motor 19 to rotate, and a gear cover 22 is arranged on the chain 16 and the chain gear 17.
Referring to fig. 2, the inner barrel of the filter comprises a filter screen frame 1, a filter screen 2, a filter screen upper end cover plate 3, a filter screen lower end cover plate 5 and an outlet 6 for filtering lower end emulsion; the inner barrel of the filter is covered by a filter screen frame 1 and an outer layer filter screen 2, and then is composed of a filter screen upper end cover plate 3 and a filter screen lower end cover plate 5 which are welded 4 and 7 respectively; the filter screen frame is formed by rolling a stainless steel plate with rows of meshes into a barrel shape and welding; the lower part of the filter inner barrel is provided with an outlet 6 of which the lower end emulsion is filtered.
Referring to fig. 3, the filter outer tub 15 is supported by a lower end bearing 11 and an upper end bearing 14, the upper end bearing 14 penetrates through the filter upper end cover plate 13 and is provided with a chain gear, and the filter outer tub 15 and the filter upper end cover plate 13 are in shaft seal; the lower part of the outer barrel 15 of the filter is provided with a funnel-shaped cover plate and a shaft seal, and the funnel-shaped cover plate is connected with a drain pipe and a drain valve 12.
The outer barrel of the filter is provided with an emulsion inlet pipe and an emulsion outlet pipe, the emulsion inlet pipe is provided with an emulsion inlet valve 21, and the emulsion outlet pipe is provided with an emulsion outlet valve 20; the left end and the right end of the outer barrel of the filter are respectively provided with a left row of steam blowing nozzles 23 and a right row of steam blowing nozzles 24, the left row of steam blowing nozzles 23 are provided with a left row of steam blowing nozzles 9, the right row of steam blowing nozzles 24 are provided with a right row of steam blowing nozzles 8, and the heights of the right row of steam blowing nozzles 8 and the left row of steam blowing nozzles 9 are the same as that of the outer barrel 15 of the filter; the outer barrel of the filter is also provided with a steam purging valve 10.
With reference to fig. 4, the purging emulsion filter further includes a control box, an emulsion differential pressure transmitter 26, and a heat tracing system; an emulsion differential pressure transmitter instrument tube 25 is respectively arranged on the emulsion inlet tube and the emulsion outlet tube, the emulsion differential pressure transmitter instrument tube 25 is connected with the emulsion differential pressure transmitter 26, the emulsion differential pressure transmitter 26 is used for monitoring the differential pressure change condition of the filter barrel, and the emulsion differential pressure transmitter 26 adopts a diaphragm type differential pressure transmitter.
The control box is used for controlling the filter to be in a running filtering state, and when the emulsion differential pressure transmitter detects that the differential pressure between the emulsion inlet and the emulsion outlet is larger than a certain value, the control box is used for controlling the emulsion inlet valve 21 to be closed; closing the emulsion outlet valve 20; opening the filter drain valve 12; opening the right row of steam blowing nozzles 8 and the left row of steam blowing nozzles 9, and starting the motor 19; the motor drives the inner barrel of the filter to rotate through the chain 16, each corner of the rotary filter screen is swept, and the sweeping process is finished after 30 minutes of sweeping.
The emulsion filter heat tracing system can be electrically heated or heated by steam, and all the pipelines of the outer barrel of the filter are required to be ensured.
The rotary automatic purging emulsion filter can be applied to a waste emulsion treatment system of a power plant boiler, emulsion flows through the filter after the system starts to operate, the filter operates for a period of time, the differential pressure of an inlet filter screen and an outlet filter screen of a filter barrel is increased, and purging is automatically started when the differential pressure is increased to a certain value (for example, the differential pressure is greater than 500 KPa). The filter does not use a pipe as a blowing nozzle like the traditional filter, and the sprayed steam can only blow a local area. The invention is provided with the left and right rows of nozzles and the filter screen which are made into the rotary barrel, and the rotary barrel is driven by the motor, and the rotary barrel rotates and sweeps in the sweeping process, so that the whole surface of the filter screen is completely blown, and the filter and even the whole emulsification treatment system are not blocked. Starting purging is controlled by a program, an inlet valve is automatically closed, an outlet valve is closed, a blowdown valve is opened, a rotary filter screen motor is started, a purging steam valve is opened, and purging is stopped after 30 minutes of purging.
In conclusion, by adopting the technical scheme of the invention, the rotary type automatic purging emulsion filter is provided with the left row of nozzles and the right row of nozzles, the sprayed steam purging area is large, the filter screen is made into the rotary barrel and is driven by the motor, the rotary barrel rotates and purges in the purging process, the whole surface of the filter screen is completely purged, and the filter and even the whole emulsion treatment system are ensured not to be blocked; the invention can treat the waste emulsion, changes the waste emulsion into valuables, and is energy-saving and environment-friendly.
Claims (10)
1. The utility model provides an automatic emulsion filter that sweeps of rotation type which characterized in that: comprises a filter inner barrel, a filter outer barrel, a motor, a chain gear and a reduction gear box; the inner filter barrel is arranged inside the outer filter barrel, the outer filter barrel is welded with a support, the support is provided with a motor, the motor is connected with a reduction gear box, an output shaft reduced by the reduction gear box is provided with a chain gear, the chain gear is connected with the inner filter barrel through a chain, and the motor drives the inner filter barrel to rotate.
2. A rotary self-purging emulsion filter as recited in claim 1, wherein said chain, chain gears are provided with gear housings.
3. The rotary automatic purging emulsion filter as claimed in claim 1, wherein the inner filter barrel comprises a filter screen frame, a filter screen upper end cover plate, a filter screen lower end cover plate, and an outlet for filtered emulsion at the lower end; the inner barrel of the filter is covered by a filter screen frame and an outer filter screen, and then is formed by welding a filter screen upper end cover plate and a filter screen frame by a filter screen upper end cover plate and a filter screen lower end cover plate and welding the filter screen frame by the filter screen lower end cover plate; the lower part of the filter inner barrel is provided with an outlet of which the lower end emulsion is filtered.
4. A rotary self-purging emulsion filter as recited in claim 3, wherein said screen frame is formed by welding stainless steel sheets having rows of openings rolled up into a barrel.
5. The rotary automatic purging emulsion filter as claimed in claim 1, wherein said filter outer barrel is supported by a lower end bearing and an upper end bearing, said upper end bearing passes through the filter upper end cover plate and is mounted with a chain gear, said filter outer barrel and said filter upper end cover plate have a shaft seal; the lower part of the outer barrel of the filter is provided with a funnel-shaped cover plate and a shaft seal, and the funnel-shaped cover plate is connected with a drain pipe and a drain valve.
6. The emulsion filter with the rotary automatic purging function as claimed in claim 5, wherein the outer filter barrel is provided with an emulsion inlet pipe and an emulsion outlet pipe, the emulsion inlet pipe is provided with an emulsion inlet valve, and the emulsion outlet pipe is provided with an emulsion outlet valve; the left row of steam purging nozzles and the right row of steam purging nozzles are respectively installed at the left end and the right end of the outer barrel of the filter, the left row of steam purging nozzles are provided with the left row of steam purging nozzles, the right row of steam purging nozzles are provided with the right row of steam purging nozzles, and the heights of the right row of steam purging nozzles and the left row of steam purging nozzles are the same as the height of the outer barrel of the filter.
7. A rotary self-purging emulsion filter as recited in claim 5, wherein said filter outer barrel is further provided with a steam purge valve.
8. The rotary type automatic purging emulsion filter as claimed in claim 1, wherein the purging emulsion filter comprises an emulsion differential pressure transmitter, an emulsion differential pressure transmitter instrument tube is respectively installed on the emulsion inlet pipe and the emulsion outlet pipe, the emulsion differential pressure transmitter instrument tube is connected with the emulsion differential pressure transmitter, and the emulsion differential pressure transmitter is used for monitoring the differential pressure change condition of the filter barrel.
9. A rotary automatic purging emulsion filter as claimed in claim 8, wherein said emulsion differential pressure transmitter is a diaphragm differential pressure transmitter.
10. The rotary automatic purging emulsion filter of claim 1, further comprising a control box for controlling the filter to be in a filtering state of operation, wherein when the emulsion differential pressure transmitter detects that the differential pressure between the emulsion inlet and the emulsion outlet is greater than a certain value, the control box is for controlling the emulsion inlet valve to be closed; closing the emulsion outlet valve; opening a filter blow-down valve; opening the right row of steam blowing nozzles and the left row of steam blowing nozzles, and starting the motor; the motor drives the inner barrel of the filter to rotate through the chain, each corner of the rotary filter screen is swept, and the sweeping is finished after 30 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910454578.7A CN112007412A (en) | 2019-05-29 | 2019-05-29 | Rotation type is automatic sweeps emulsion filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910454578.7A CN112007412A (en) | 2019-05-29 | 2019-05-29 | Rotation type is automatic sweeps emulsion filter |
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| Publication Number | Publication Date |
|---|---|
| CN112007412A true CN112007412A (en) | 2020-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910454578.7A Pending CN112007412A (en) | 2019-05-29 | 2019-05-29 | Rotation type is automatic sweeps emulsion filter |
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| CN205867702U (en) * | 2016-07-18 | 2017-01-11 | 江苏元贞智能科技有限公司 | Full -automatic rainwater filter wash device |
| CN106731168A (en) * | 2017-01-06 | 2017-05-31 | 启东市飞宏自动化设备有限公司 | A kind of full-automatic back washing filtration system |
| CN206454340U (en) * | 2017-01-09 | 2017-09-01 | 南通诚通机电科技有限公司 | High-pressure automatic back-flushing filter for sea water filter |
| EP3339501A1 (en) * | 2015-08-18 | 2018-06-27 | LG Electronics Inc. | Laundry handling apparatus |
| US20190038091A1 (en) * | 2017-08-01 | 2019-02-07 | Siu Tung Nam | Gas driven automatic moving steam circulation window wiping robot |
| CN109453558A (en) * | 2017-09-06 | 2019-03-12 | 宝山钢铁股份有限公司 | A kind of filtering sweeping control equipment of waste emulsion liquid processing system |
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2019
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Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4271018A (en) * | 1978-09-22 | 1981-06-02 | Mordeki Drori | Backwashable fluid filters |
| CN102258898A (en) * | 2011-02-23 | 2011-11-30 | 淄博市博山防爆电器厂有限公司 | Automatic backwashing liquid-returning filter |
| CN202724859U (en) * | 2012-05-07 | 2013-02-13 | 刘智刚 | Efficient self-washing emulsion filtering machine system |
| CN204485584U (en) * | 2015-03-31 | 2015-07-22 | 梅县梅雁旋窑水泥有限公司 | A kind of track duster for cement plant |
| EP3339501A1 (en) * | 2015-08-18 | 2018-06-27 | LG Electronics Inc. | Laundry handling apparatus |
| CN105148595A (en) * | 2015-08-31 | 2015-12-16 | 洛阳双瑞金属复合材料有限公司 | Vertical automatic backwash filter device |
| CN205867702U (en) * | 2016-07-18 | 2017-01-11 | 江苏元贞智能科技有限公司 | Full -automatic rainwater filter wash device |
| CN106731168A (en) * | 2017-01-06 | 2017-05-31 | 启东市飞宏自动化设备有限公司 | A kind of full-automatic back washing filtration system |
| CN206454340U (en) * | 2017-01-09 | 2017-09-01 | 南通诚通机电科技有限公司 | High-pressure automatic back-flushing filter for sea water filter |
| US20190038091A1 (en) * | 2017-08-01 | 2019-02-07 | Siu Tung Nam | Gas driven automatic moving steam circulation window wiping robot |
| CN109453558A (en) * | 2017-09-06 | 2019-03-12 | 宝山钢铁股份有限公司 | A kind of filtering sweeping control equipment of waste emulsion liquid processing system |
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Application publication date: 20201201 |