CN102512870A - Automatic back-washing combined filter - Google Patents
Automatic back-washing combined filter Download PDFInfo
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- CN102512870A CN102512870A CN2012100016585A CN201210001658A CN102512870A CN 102512870 A CN102512870 A CN 102512870A CN 2012100016585 A CN2012100016585 A CN 2012100016585A CN 201210001658 A CN201210001658 A CN 201210001658A CN 102512870 A CN102512870 A CN 102512870A
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- tank body
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- filter tank
- cyclone
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- 238000011001 backwashing Methods 0.000 title abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 101
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- 229910000831 Steel Inorganic materials 0.000 claims description 4
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- 229910052742 iron Inorganic materials 0.000 claims description 4
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Abstract
The invention relates to an automatic back-washing combined filter which is characterized by comprising a sediment filter tank body; a sediment inlet, a back-washing water outlet and an air inlet/exhaust valve are arranged at the top of the sediment filter tank body; a water-sediment swirler is arranged in the sediment filter tank body; an outlet opening at the bottom of the sediment filter tank body passes out of the baseplate of the sediment filter tank body and is connected with a sand tank; one end of an overflow pipe connected with the water-sediment swirler extends into a water-sediment swirler tank body, and the other end of the overflow pipe is connected with the junction between the outflow pipe and a back-washing drainage pipe; an electromagnetic three-way valve is arranged at the junction; two ends of the outflow pipe are arranged in the sediment filter tank body; a water inlet tube passing out of the sediment filter tank body is connected on the water-sediment swirler tank body; drain pipes passing out of the bottom plate of the sediment filter tank body are connected with the bottoms of two mesh gauze filters arranged in the sediment filter tank body; two ends of the back-washing drainage pipes pass out of the sediment filter tank body and are correspondingly connected on the drain pipes; an impeller is arranged in the sediment filter tank body; and the motor fixed on the sediment filter tank body provides power for the impeller.
Description
Technical field
The present invention relates to a kind of filter, particularly draw yellow drip irrigation and use the automatic backwash combination filter about a kind of.
Background technology
The Huanghe valley belongs to arid, semiarid zone more, and the problem of shortage of water resources is seriously restricting development of industry and agriculture always.Especially in recent years the Yellow River available water is decline trend year by year.The upper and middle reaches, the Yellow River come that water is on the low side, downstream are regional arid year after year short of rain, and water requirement constantly increases, and the water resource imbalance between supply and demand is more outstanding.Huanghe water is few, sand is many, the past to draw yellow the irrigation be the ground flood irrigation mostly, the problem that channel washes away and deposit not only appears, more serious is that a large amount of precious water resource are wasted, and has aggravated the anxiety of Yellow River Water Resources and short.Drip irrigation is to utilize plastic conduit that water is delivered to crop root through aperture on the about 10mm hollow billet of diameter or water dropper to carry out localized irrigation; Because of its smart amount, controlled characteristics are considered to the most effective a kind of water-saving irrigation mode in present drought and water shortage area, the utilization rate of water can reach 95%.The water saving of drip irrigation, joint fertilizer, saving of labor, maintenance soil texture, improve product quality, advantage such as increase production and improve productivity is by well recognized, in practical application, attain in maturation.Along with becoming increasingly conspicuous of the developing rapidly of Huanghe valley industrial or agricultural, Yellow River Water Resources imbalance between supply and demand, adopt and draw yellow drip irrigation and become the important channel that addresses these problems.And Inner Mongolia Autonomous Region increases newly in the implementation process of a collection of Important Project such as " four ten million mu " water-saving irrigation, the water rights conversion of Ning Meng the Yellow River, and drawing yellow drip irrigation technique also has very important effect.
Draw Huang and must draw sand, for the drip irrigation technique of easy blocking, the problem that solves water quality becomes the most important thing of this technology of use.The outstanding behaviours that drip irrigation system stops up is the obstruction of douche; Its main cause is that the douche channel size generally has only 0.5～1.2mm, and impurity such as the suspension in the Huanghe water, dissolving salt, chemical precipitation, organic matter, microorganism all very easily cause the obstruction of douche.Douche stops up to have become and draws the key problem on obstacle of yellow drip irrigation technique in applying, and the quality that its solves is directly determining the service life and the application benefit of drip irrigation system.Though from first international drip irrigation meeting in 1971 since Israel holds; A large amount of scientific research scholars attempts to solve the drip irrigation system blockage problem from many-sides such as the processing of reasonable disposition filter plant, periodicity acid and chlorine and douche labyrinth flow-path optimal design; But still fail to solve well, main cause is that the mechanism of drip emitter obstruction is not clear.Present nearly all data show that irrigation water quality and douche stop up closely related; The existence of suspended particulate substance is the direct factor that causes drip irrigation system to stop up in the water source; The Yellow River water quality is complicated; Exist significantly different with general high sand-carrying water source; Wherein contain the sand grain that exhibiting high surface adheres to one deck microbial film, abundant nitrogen phosphorus nutrition element and microorganism, and other high sand-carrying water source only is to contain the suspended sand particle, this makes the douche that draws yellow drip irrigation system stop up control technology to exist significantly different.Filtering also is the important method that solves Sedimentation Problems; Use more filter several types such as sand filter, filter, eddy flow water sand separator and laminated filter are arranged; Also there is part to develop the filter product in suitable high sand-carrying water source both at home and abroad; Like: the Li Shuan of Xinjiang Tianye (Group) Co., Ltd. congruence (patent No.: ZL200520133926.4) disclose a kind of backwash combination filter, can reduce the influence of silt blocking filter through backwash, but it be manually to control backwash; Can not directly carry out automatic backwash through the variation of tank body internal pressure, the backwash controllability is not strong.(the patent No.s: ZL200520024929.4) disclose a kind of centrifugal screen cloth integral type slight irrigation filter such as the Sun Xin of Yuncheng City Inst. of Water Conservancy Science Shanxi Prov. loyalty; It is bad to have solved the filter effect that centrifugal screen cloth combined filter exists in the prior art; Complex structure and other problems; But still only limit to medium and screen cloth cascade filtration, it is best that filter effect fails to reach.Of paramount importancely be, the water source of silt, microorganism, organic matter need control simultaneously in to(for) this special water quality in the Yellow River could fundamentally solve the douche blockage problem, and exploitation is suitable draws yellow combined filter has become present urgent problem.
Summary of the invention
To the problems referred to above, it is strong to the purpose of this invention is to provide a kind of self adaptation ability of regulation and control, and the yellow drip irrigation of drawing that can effectively solve problems such as plugged filter and water filtration degree are not enough is used the automatic backwash combination filter.
For realizing above-mentioned purpose, the present invention takes following technical scheme: a kind of automatic backwash combination filter is characterized in that: it comprises sandrock filter tank body, the husky cyclone of water, granular membrane, impeller-agitator and the husky jar of dirt; Said sandrock filter tank body supports through the tank body bracing frame; The top of said sandrock filter tank body is provided with sand inlet, backwash delivery port and air inlet and exhaust valve; The husky cyclone of said water comprises the husky cyclone tank body of the water that is arranged in the said sandrock filter tank body, and the base plate that the bottom outlet of the husky cyclone tank body of said water passes said sandrock filter tank body connects husky jar of said dirt; The top seal of the husky cyclone tank body of said water and connect an overflow pipe; One end of said overflow pipe stretches into the husky cyclone tank interior of said water; The other end connects the junction of outflow tube and backwash drainage tube; The junction of said outflow tube and backwash drainage tube is provided with the electromagnetism three-way valve, and the two ends of said outflow tube are arranged in the said sandrock filter tank body, and the two ends of said backwash drainage tube all pass said sandrock filter tank body; Also connect a water inlet pipe on the husky cyclone tank body of said water, the other end of said water inlet pipe passes said sandstone and filters tank body, and the said water inlet pipe that is positioned at said sandstone filtering tank external is provided with controller and Pressure gauge; Said granular membrane has two; Be arranged in the said sandrock filter tank body; The bottom of two said granular membranes all connects a drainpipe; The other end of two said drainpipes all passes the base plate of said sandrock filter tank body, and two said drainpipes are positioned at the outside end of said sandrock filter tank body and are provided with Pressure gauge and magnetic valve; The two ends of said backwash drainage tube all pass said sandrock filter tank body correspondence and are connected on the said drainpipe of said granular membrane; Said impeller-agitator comprises two impellers that are arranged in the said sandrock filter tank body; Two said impellers connect a rotating shaft respectively; The bottom that said sandrock filter tank body is all passed in two said rotating shafts connects a travelling gear, is provided with driving-chain between two said travelling gears, and one of them said travelling gear connects gearbox through power transmission shaft; Said gearbox connects motor, and said motor is fixed on the said sandrock filter tank body; Said dirt is a circle tube tank body for husky jar; Support through the husky jar bracing frame of dirt; The end sealing that said dirt is husky jar; And it is provided with a sand excluding valve, and the other end that said dirt is husky jar connects an end cap, and the upward middle part of said sand and dust jar connects the bottom outlet of the husky cyclone tank body of said water through adpting flange.
The top of the husky cyclone tank body of said water is cylinder, and the middle part is the bigger cone of cone angle, and the bottom is the less cone of cone angle.
One section outer wall that said overflow pipe is positioned at the husky cyclone tank body of said water is provided with the stirring circular cone; The internal diameter of said overflow pipe is 250mm, and the wall thickness of said overflow pipe is 22mm～24mm.
Said water inlet pipe is an involute shape with the port cross sectional shape that the husky cyclone tank body of said water is connected.
The skin of said granular membrane is a screen cloth, and rhombus iron bar and steel skeleton are housed in the said screen cloth.
The top of said sandrock filter tank body is provided with hanger; The end cap that said dirt is husky jar is provided with handle.
The present invention is owing to take above technical scheme; It has the following advantages: 1, the present invention includes the sandrock filter tank body; Be provided with husky cyclone of water and granular membrane in the sandrock filter tank body, therefore, can carry out three-stage filtration multiple size particles thing (comprising silt, microorganism etc.) and organic matter etc. in the water source, the Yellow River; Use flowing water matter and obviously promoted, make the more existing filtration measure of plugging rate of douche reduce more than 60%.2, the top of the husky cyclone tank body of water of the present invention is cylinder, and the middle part is the bigger cone of cone angle, and the bottom is the less cone of cone angle; The heavy wall overflow pipe is used in the two-stage setting of middle and lower part, and the overflow pipe outer wall is provided with the stirring awl; Therefore; Can reduce the influence of short-circuit flow, effectively control silt, make the husky separation of water faster, more thorough separating effect.3, the present invention can be according to the pressure reduction in the sandrock filter tank body; Through closed electromagnetic valve and the conversion of electromagnetism three-way valve direction on the controller control drainpipe that is provided with on the water inlet pipe; Make water get into drainpipe through the backwash drainage tube through overflow pipe; Again through discharging by the backwash delivery port behind granular membrane and the sandstone, thereby reach the purpose that granular membrane and sandstone are carried out backwash, and can have the time that backwash begins accurately and control.4, be provided with two agitator arms in the sandrock filter tank body of the present invention, agitator arm can improve the efficient of backwash.5, but the husky jar integral demounting of the dirt below the sandrock filter tank body of the present invention is an independent part, makes structure become simpler, more convenient operation, the service life that can improve device.6, water inlet pipe of the present invention is an involute shape with the port cross sectional shape that the husky cyclone tank body of water is connected, and therefore, can reduce the influence of short-circuit flow to separating effect, makes separation more thorough.7, the outlet diameter of the husky cyclone of water of the present invention is very little, therefore, can reduce the volume of negative pressuren zone air column, reduces the harm of cavitation.Structure of the present invention is provided with ingenious, and is easy to operate, and the self adaptation ability of regulation and control is strong, good filtration effect, and can automatic backwash, efficiently solve problems such as plugged filter and water filtration degree are not enough, can be widely used in and draw in the yellow drip irrigation process.
Description of drawings
Fig. 1 is an overall structure sketch map of the present invention
Fig. 2 is a partial cutaway schematic of the present invention
Fig. 3 is the husky jar structure sketch map of impeller-agitator of the present invention and dirt
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is carried out detailed description.
Like Fig. 1, shown in Figure 2, the present invention includes sandrock filter tank body 1, the husky cyclone 2 of water, granular membrane 3, impeller-agitator 4 and the husky jar 5 of dirt.
Sandrock filter tank body 1 of the present invention supports through tank body bracing frame 6.The oblique upper of sandrock filter tank body 1 is provided with sand inlet 11, and sand inlet 11 is provided with end cap 12, with sand inlet 11 relative sandrock filter tank body 1 tops backwash delivery port 13 is set.The top center place of sandrock filter tank body 1 is provided with air inlet and exhaust valve 14, and air inlet and exhaust valve 14 both sides are arranged with hanger 15.
The husky cyclone 2 of water of the present invention is arranged on the inside of sandrock filter tank body 1, and the husky cyclone 2 of water comprises the husky cyclone tank body 21 of water, and the top of the husky cyclone tank body 21 of water is cylinders, and the middle part is the bigger cone of cone angle, and the bottom is the less cone of cone angle.The base plate that the bottom outlet of the husky cyclone tank body 21 of water passes sandrock filter tank body 1 connects husky jar 5 of dirt.The top seal of the husky cyclone tank body 21 of water and connect an overflow pipe 22, an end of overflow pipe 22 stretches into the husky cyclone tank body of water 21 inside, and in the overflow pipe 22 tube wall arranged outside of this section the circular cone 23 of stirring is arranged.The other end of overflow pipe 22 connects the junction of outflow tube 24 and backwash drainage tube 25; The junction of outflow tube 24 and backwash drainage tube 25 is provided with electromagnetism three-way valve 26; The two ends of outflow tube 24 are arranged in the sandrock filter tank body 1, and the two ends of backwash drainage tube 25 all pass sandrock filter tank body 1.Also connect a water inlet pipe 27 on the husky cyclone tank body 21 of water, the other end side direction tangent line of water inlet pipe 27 passes sandstone and filters tank body 1, and is positioned at sandstone and filters tank body 1 outside water inlet pipe 27 and be provided with controller 28 and Pressure gauge 29.
Like Fig. 1, Fig. 2, shown in Figure 3; Impeller-agitator 4 of the present invention comprises two impellers 41; Two impellers 41 are symmetricly set on the inside of sandrock filter tank body 1, the both sides, front and back of the husky cyclone 2 of water, and two impellers 41 connect the bottom that 42, two rotating shafts 42 of a rotating shaft all pass sandrock filter tank body 1 respectively and connect a travelling gear 43; Be provided with driving-chain 44 between two travelling gears 43; One of them travelling gear 43 connects gearbox 45 through power transmission shaft, and gearbox 45 connects motor 46, and motor 46 is fixed on the sandstone filter tank body 1 through bearing frame 47.Impeller-agitator 4 operation principles are: change the rotating speed of motor 46 through gearbox 45, and send power to travelling gear 43 and rotating shaft 42, and then drives impeller 41 stirs.
Dirt of the present invention is a circle tube tank body for husky jar 5; Support through the husky jar bracing frame 7 of dirt, the end sealing that dirt is husky jar 5, and it is provided with a sand excluding valve 51; Can uninterruptedly arrange sand through the continual husky valve 51 of dirt of opening in the running, to prolong the clear husky cycle.The other end that dirt is husky jar 5 connects an end cap 52 through bolt, and end cap 52 is provided with a handle 53, and the upward middle part of sand and dust jar 5 connects the bottom outlet of the husky cyclone tank body 21 of water through adpting flange 54.
In the foregoing description, overflow pipe of the present invention 22 adopts the heavy wall overflow pipes, the tube wall of overflow pipe 22 be in the prior art overflow pipe pipe thickness 115%～125%.When the inner diameter d of overflow pipe=250mm, overflow pipe wall thickness of the prior art is generally 10mm～20mm, and the wall thickness of overflow pipe 22 of the present invention is about 22mm～24mm; And one section outer wall that overflow pipe 22 of the present invention is positioned at the husky cyclone tank body 21 of water is provided with stirring circular cone 23, therefore, can reduce the influence of short-circuit flow to separating effect significantly.
In the foregoing description, water inlet pipe 27 is an involute shape with the port cross sectional shape that the husky cyclone tank body 21 of water is connected, and also can reduce the influence of short-circuit flow to separating effect.
In the foregoing description, the bottom outlet diameter of the husky cyclone tank body 21 of water is very little, can reduce the volume of air column in the negative pressuren zone, reduces the harm of cavitation.
In the foregoing description; The controller 28 that is provided with on the water inlet pipe 27 of connection on the husky cyclone tank body 21 of water is used to control the magnetic valve 35 that is provided with on the drainpipe 33 of two granular membrane 3 bottoms connections, and the electromagnetism three-way valve 26 of the junction setting of outflow tube 24 and backwash drainage tube 25.
Concrete workflow of the present invention is following.
1) presets sandstone 8 through sand inlet 11 in the sandrock filter tank body 1, during operation, sand inlet 11 is closed;
2) water source to be filtered is got in the husky cyclone 2 of water by water inlet pipe 27 tangentials; The pressure of fluid can convert the kinetic energy of fluid in the rotation of the husky cyclone tank body of water 21 inner high speed; The powerful centrifugal force field that produces in the fluid motion process; The husky cyclone 2 of water gets into husky jar 5 of dirt through adpting flange 54 downwards in the drive lower edge of centrifugal force to make the bigger component of density in the mixture (or diameter) (thick phase); Turn on the connecting bolt on sand and dust jar 5 and the end cap 52,53 draw back end cap 52, bulky grain is got rid of through shaking hands; Also can uninterruptedly arrange sand in the running, to prolong the clear husky cycle through the continual husky valve 51 of dirt of opening.
3) less component (light phase) the upwards migration when rotatablely moving of density (or diameter), eddy flow is discharged from overflow pipe 22 in forming, on the sandstone 8 in outflow tube 24 is scattering into sandrock filter tank body 1;
4) fluid arrives two granular membranes 3 after sandstone 8 filters, and the drainpipe 33 that after two granular membranes 3 filter, connects through two granular membrane 3 bottoms is discharged the water after obtaining filtering.
5) when in the sandrock filter tank body 1 owing to stop up when causing that pressure is elevated to setting value; Magnetic valve 35 on the controller 28 control drainpipes 33 that are provided with on the water inlet pipe 27 cuts out with electromagnetism three-way valve 26 directions and changes; Make water get into drainpipe 33 through backwash drainage tube 25 through overflow pipe 22; Discharge by backwash delivery port 13 through granular membrane 3 and sandstone 8 backs again; Thereby reach the purpose that granular membrane 3 and sandstone 8 are carried out backwash, backwashing time is 10min, and backwashing period is 1h.
In said process; Can be through the pressure in the air inlet and exhaust valve 14 adjusting sandrock filter tank bodies 1; Be positioned at the Pressure gauge 34 that is provided with on the end of sandrock filter tank body 1 outside through Pressure gauge 29, two drainpipes 33 that are provided with on the water inlet pipe 27, read the force value of import and export respectively.
Above-mentioned each embodiment only is used to explain the present invention, and wherein the structure of each parts, connected mode etc. can change to some extent, and every equivalents of on the basis of technical scheme of the present invention, carrying out and improvement all should not got rid of outside protection scope of the present invention.
Claims (10)
1. automatic backwash combination filter is characterized in that: it comprises husky jar of sandrock filter tank body, the husky cyclone of water, granular membrane, impeller-agitator and dirt;
Said sandrock filter tank body supports through the tank body bracing frame; The top of said sandrock filter tank body is provided with sand inlet, backwash delivery port and air inlet and exhaust valve;
The husky cyclone of said water comprises the husky cyclone tank body of the water that is arranged in the said sandrock filter tank body, and the base plate that the bottom outlet of the husky cyclone tank body of said water passes said sandrock filter tank body connects husky jar of said dirt; The top seal of the husky cyclone tank body of said water and connect an overflow pipe; One end of said overflow pipe stretches into the husky cyclone tank interior of said water; The other end connects the junction of outflow tube and backwash drainage tube; The junction of said outflow tube and backwash drainage tube is provided with the electromagnetism three-way valve, and the two ends of said outflow tube are arranged in the said sandrock filter tank body, and the two ends of said backwash drainage tube all pass said sandrock filter tank body; Also connect a water inlet pipe on the husky cyclone tank body of said water, the other end of said water inlet pipe passes said sandstone and filters tank body, and the said water inlet pipe that is positioned at said sandstone filtering tank external is provided with controller and Pressure gauge;
Said granular membrane has two; Be arranged in the said sandrock filter tank body; The bottom of two said granular membranes all connects a drainpipe; The other end of two said drainpipes all passes the base plate of said sandrock filter tank body, and two said drainpipes are positioned at the outside end of said sandrock filter tank body and are provided with Pressure gauge and magnetic valve; The two ends of said backwash drainage tube all pass said sandrock filter tank body correspondence and are connected on the said drainpipe of said granular membrane;
Said impeller-agitator comprises two impellers that are arranged in the said sandrock filter tank body; Two said impellers connect a rotating shaft respectively; The bottom that said sandrock filter tank body is all passed in two said rotating shafts connects a travelling gear, is provided with driving-chain between two said travelling gears, and one of them said travelling gear connects gearbox through power transmission shaft; Said gearbox connects motor, and said motor is fixed on the said sandrock filter tank body;
Said dirt is a circle tube tank body for husky jar; Support through the husky jar bracing frame of dirt; The end sealing that said dirt is husky jar; And it is provided with a sand excluding valve, and the other end that said dirt is husky jar connects an end cap, and the upward middle part of said sand and dust jar connects the bottom outlet of the husky cyclone tank body of said water through adpting flange.
2. a kind of automatic backwash combination filter as claimed in claim 1 is characterized in that: the top of the husky cyclone tank body of said water is cylinder, and the middle part is the bigger cone of cone angle, and the bottom is the less cone of cone angle.
3. a kind of automatic backwash combination filter as claimed in claim 1 is characterized in that: one section outer wall that said overflow pipe is positioned at the husky cyclone tank body of said water is provided with the stirring circular cone; The internal diameter of said overflow pipe is 250mm, and the wall thickness of said overflow pipe is 22mm～24mm.
4. a kind of automatic backwash combination filter as claimed in claim 2 is characterized in that: one section outer wall that said overflow pipe is positioned at the husky cyclone tank body of said water is provided with the stirring circular cone; The internal diameter of said overflow pipe is 250mm, and the wall thickness of said overflow pipe is 22mm～24mm.
5. like claim 1 or 2 or 3 or 4 described a kind of automatic backwash combination filters, it is characterized in that: said water inlet pipe is an involute shape with the port cross sectional shape that the husky cyclone tank body of said water is connected.
6. like claim 1 or 2 or 3 or 4 described a kind of automatic backwash combination filters, it is characterized in that: the skin of said granular membrane is a screen cloth, and rhombus iron bar and steel skeleton are housed in the said screen cloth.
7. a kind of automatic backwash combination filter as claimed in claim 5 is characterized in that: the skin of said granular membrane is a screen cloth, and rhombus iron bar and steel skeleton are housed in the said screen cloth.
8. like claim 1 or 2 or 3 or 4 or 7 described a kind of automatic backwash combination filters, it is characterized in that: the top of said sandrock filter tank body is provided with hanger; The end cap that said dirt is husky jar is provided with handle.
9. a kind of automatic backwash combination filter as claimed in claim 5, it is characterized in that: the top of said sandrock filter tank body is provided with hanger; The end cap that said dirt is husky jar is provided with handle.
10. a kind of automatic backwash combination filter as claimed in claim 6, it is characterized in that: the top of said sandrock filter tank body is provided with hanger; The end cap that said dirt is husky jar is provided with handle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210001658 CN102512870B (en) | 2012-01-05 | 2012-01-05 | Automatic back-washing combined filter |
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| CN 201210001658 CN102512870B (en) | 2012-01-05 | 2012-01-05 | Automatic back-washing combined filter |
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| CN102512870A true CN102512870A (en) | 2012-06-27 |
| CN102512870B CN102512870B (en) | 2013-10-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103432810A (en) * | 2013-09-06 | 2013-12-11 | 上海滤威过滤系统有限公司 | Backwashing filter |
| CN108117112A (en) * | 2017-12-11 | 2018-06-05 | 宁波清智环保科技有限公司 | For the processing unit of sewage |
| CN109340888A (en) * | 2018-09-26 | 2019-02-15 | 北京科普森自动化工程技术有限公司 | A kind of central heating stations alarm method and system |
| CN114307363A (en) * | 2021-12-31 | 2022-04-12 | 中国农业大学 | Automatic back flush centrifugation-grit integral filter |
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| JPH01104315A (en) * | 1987-07-30 | 1989-04-21 | Mitsubishi Oil Co Ltd | Integrated separation/removal equipment of solid and/or gaseous foreign matter in lubricating oil |
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| CN2860589Y (en) * | 2005-10-21 | 2007-01-24 | 新疆天业（集团）有限公司 | Reversal combined filter |
| CN201921590U (en) * | 2011-01-30 | 2011-08-10 | 李永奇 | Stirring type grit-screen combined multi-stage drip irrigation filter |
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| CN2778366Y (en) * | 2005-02-22 | 2006-05-10 | 邹云 | Integrated sanding screen filter |
| CN2860589Y (en) * | 2005-10-21 | 2007-01-24 | 新疆天业（集团）有限公司 | Reversal combined filter |
| CN201921590U (en) * | 2011-01-30 | 2011-08-10 | 李永奇 | Stirring type grit-screen combined multi-stage drip irrigation filter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103432810A (en) * | 2013-09-06 | 2013-12-11 | 上海滤威过滤系统有限公司 | Backwashing filter |
| CN103432810B (en) * | 2013-09-06 | 2015-04-01 | 上海滤威过滤系统有限公司 | Backwashing filter |
| CN108117112A (en) * | 2017-12-11 | 2018-06-05 | 宁波清智环保科技有限公司 | For the processing unit of sewage |
| CN109340888A (en) * | 2018-09-26 | 2019-02-15 | 北京科普森自动化工程技术有限公司 | A kind of central heating stations alarm method and system |
| CN114307363A (en) * | 2021-12-31 | 2022-04-12 | 中国农业大学 | Automatic back flush centrifugation-grit integral filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102512870B (en) | 2013-10-30 |
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