CN114703918A - Building ash water recycling system - Google Patents

Building ash water recycling system Download PDF

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Publication number
CN114703918A
CN114703918A CN202210355607.6A CN202210355607A CN114703918A CN 114703918 A CN114703918 A CN 114703918A CN 202210355607 A CN202210355607 A CN 202210355607A CN 114703918 A CN114703918 A CN 114703918A
Authority
CN
China
Prior art keywords
pipe
water
tank
electromagnetic valve
building
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210355607.6A
Other languages
Chinese (zh)
Inventor
白文涛
罗远光
皮萌萌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baoding Liyuan Water Technology Development Service Center
Original Assignee
Baoding Liyuan Water Technology Development Service Center
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baoding Liyuan Water Technology Development Service Center filed Critical Baoding Liyuan Water Technology Development Service Center
Priority to CN202210355607.6A priority Critical patent/CN114703918A/en
Publication of CN114703918A publication Critical patent/CN114703918A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00Methods or layout of installations for water supply
    • E03B1/04Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/041Greywater supply systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11Filters 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
    • B01D29/117Filters 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 outward flow filtration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62Regenerating the filter material in the filter
    • B01D29/64Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6469Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
    • B01D29/6476Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to the filtering element
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62Regenerating the filter material in the filter
    • B01D29/64Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6469Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
    • B01D29/6484Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a translatory movement with respect to the filtering element
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00Methods or layout of installations for water supply
    • E03B1/04Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/041Greywater supply systems
    • E03B1/042Details thereof, e.g. valves or pumps
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03DWATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D5/00Special constructions of flushing devices, e.g. closed flushing system
    • E03D5/003Grey water flushing systems
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00Methods or layout of installations for water supply
    • E03B1/04Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/041Greywater supply systems
    • E03B2001/045Greywater supply systems using household water

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Sanitary Device For Flush Toilet (AREA)

Abstract

The invention discloses a building ash water recycling system, which comprises a water tank communicated with a drain pipe of a building on the upper floor and a toilet flushing pipe communicated with the bottom of the water tank, wherein the toilet flushing pipe is connected with a water inlet of a urinal; the toilet flushing pipe is provided with a second electromagnetic valve, a second liquid level switch is arranged in the water tank close to the bottom, and a first liquid level switch is arranged in the water tank close to the top. The invention realizes the collection of the upper layer of grey water and the use of the collected grey water for flushing a toilet, thereby realizing the reutilization of the grey water and saving water resources.

Description

Building ash water recycling system
Technical Field
The invention relates to the technical field of water saving devices, in particular to a building ash water recycling system.
Background
In most multi-storey and high-rise buildings, a large amount of wash water, bath water, vegetable water and washing water is generated in life, the domestic waste water is collectively called as grey water, and the grey water is usually directly drained into a sewer pipe and flows away. Since the content of impurities and dirt in the grey water is not very high, the waste of water resource is caused when every household inhabitant directly discharges the grey water into a sewer pipe. In the present society with increasingly scarce water resources, if the grey water can be reused, a large amount of water resources can be saved.
The patent application with publication number CN212450908U discloses a domestic sewage recycling device, including the work board, the top fixedly connected with stirring shell of work board, the top fixedly connected with feed liquor pipe of stirring shell, one side fixedly connected with motor of stirring shell, the output shaft of motor passes through shaft coupling fixedly connected with pivot, the outer wall swing joint of pivot has the bearing main part, the inside wall fixedly connected with baffle of stirring shell. This domestic sewage recycling device has reached the effectual purpose of this sewage recycling device environmental protection to solved the not good problem of general sewage recycling device environmental protection effect, made the sewage of accomplishing the processing can reach the requirement of reuse, practiced thrift the water resource. The application structure is complex, the occupied space is large, and the stirring device, the motor and other equipment need to be equipped, so that the application structure is not suitable for buildings and other buildings.
Patent application with publication number CN213708020U discloses a domestic sewage recycles device, the power distribution box comprises a box body, the flocculating agent case, servo motor, the hybrid pole, this application is through the box, servo motor, the hybrid pole, the flocculating agent case, the swash plate, first pump machine, the raceway, the delivery head, the connecting plate, active carbon filtration membrane, banana fiber filtration membrane, metal filtration membrane, hyperfine filtration membrane, guide plate, ultraviolet ray disinfection lamp and ozone generator's setting realization domestic sewage handles, but same structure is complicated, with high costs, occupation space is big, and be not fit for buildings such as building.
Disclosure of Invention
The invention aims to provide a building grey water recycling system, which collects and recycles the grey water of the upper layer to save water resources.
In order to realize the purpose, the technical scheme adopted by the invention is as follows:
a building ash water recycling system comprises a water tank communicated with a drain pipe of a house on the upper floor and a toilet flushing pipe communicated with the bottom of the water tank, wherein the toilet flushing pipe is connected with a water inlet of a toilet, a three-way electromagnetic valve is arranged on the drain pipe, an inlet of the three-way electromagnetic valve is connected with the drain pipe, one outlet of the three-way electromagnetic valve is communicated with the top of the water tank, the other outlet of the three-way electromagnetic valve is connected with a bypass pipe, and the bypass pipe is communicated with a sewer pipe of a building; the toilet flushing pipe is provided with a second electromagnetic valve, a second liquid level switch is arranged in the water tank close to the bottom, and a first liquid level switch is arranged in the water tank close to the top.
Furthermore, be connected with first flushing pipe on the drain pipe, the one end that the drain pipe was kept away from to first flushing pipe communicates with the upper hose of building, be equipped with first solenoid valve on the first flushing pipe.
Furthermore, a second flushing pipe is connected to the position, close to the outlet of the second electromagnetic valve, of the toilet flushing pipe, one end, far away from the toilet flushing pipe, of the second flushing pipe is connected with the water feeding pipe, and a third electromagnetic valve is arranged on the second flushing pipe.
Furthermore, a filter tank is arranged on a drain pipe between the three-way electromagnetic valve and the water tank, the filter tank comprises a vertically closed tank and a vertically cylindrical filter screen fixedly arranged in the tank, and the filter screen divides the interior of the tank into two cavities, namely an inner cavity in the filter screen and an outer cavity outside the filter screen; the inner cavity is communicated with a water discharge pipe to which the grey water flows, and the outer cavity is communicated with a water discharge pipe to which the grey water flows.
Furthermore, a drain communicated with the inner cavity is arranged at the bottom of the tank, a drain pipe is fixedly connected with the drain outlet, one end, far away from the tank, of the drain pipe is connected with a sewer pipe, and a fourth electromagnetic valve is arranged on the drain pipe.
Furthermore, a scraping ring is arranged in the filter screen, the outer side of the scraping ring is abutted against the inner side of the filter screen, the scraping ring is coaxial with the filter screen, a pull rod is fixedly connected to the scraping ring, the pull rod is connected with the top of the pot in a penetrating and sliding mode, and the pull rod is in sealing fit with the pot.
Furthermore, an elastic spiral belt is arranged in the filter screen, the outer side of the spiral belt is abutted against the inner side of the filter screen, and a motor for driving the spiral belt to rotate is arranged outside the tank.
Furthermore, a rotating shaft is fixedly arranged at the center of the spiral belt, and the motor is in magnetic coupling transmission connection with the rotating shaft.
The invention has the positive effects that:
1. the invention is provided with a water tank, a toilet flushing pipe, a drain pipe, a three-way electromagnetic valve, a bypass pipe and a second electromagnetic valve, wherein a second liquid level switch is arranged in the water tank, so that the collection of the upper layer of grey water and the use of the upper layer of grey water for toilet flushing are realized, thereby realizing the reuse of the grey water and saving water resources.
2. The inlet of the S-shaped bend of the drain pipe is connected with a first flushing pipe, the first flushing pipe is communicated with a water feeding pipe of a building, a first electromagnetic valve is arranged on the first flushing pipe, the first electromagnetic valve acts regularly to flush the water coiling pipe and the bypass pipe, and dirt is prevented from being accumulated in the drain pipe and the bypass pipe to cause blockage.
3. The invention is provided with the filter tank, can prevent the blockage of the toilet flushing pipe or the aggregation and the precipitation of dirt in the water tank, and reduces the maintenance workload of the water tank.
4. Be equipped with scraping ring or spiral area in filtering jar, can scrape the filth on the filter screen inner wall in filtering jar down to reduce the resistance of filter screen, avoid the filth to block up the filter screen.
Drawings
FIG. 1 is a schematic diagram of embodiment 1;
FIG. 2 is a schematic diagram of embodiment 2;
FIG. 3 is a schematic view of the construction of a canister in example 2;
FIG. 4 is a schematic view of the construction of a canister in example 3;
FIG. 5 is a schematic view of the construction of a canister in example 4;
in the figure:
1. a water feeding pipe; 2. a first flush pipe; 3. a first solenoid valve; 4. an absorption basin; 5. s bending; 6. a drain pipe; 7. a floor drain; 8. a three-way electromagnetic valve; 9. a water tank; 10. a first liquid level switch; 11. a second liquid level switch; 12. a bypass pipe; 13. a second solenoid valve; 14. a third electromagnetic valve; 15. a toilet flushing pipe; 16. a second flush pipe; 17. a urinal; 18. a filter tank; 19. a fourth solenoid valve; 20. a blow-off pipe; 21. a sewer pipe; 22. filtering with a screen; 23. a water inlet; 24. a can lid; 25. a water outlet; 26. scraping rings; 27. a pull rod; 28. a helical band; 29. a motor; 30. a sewage draining outlet; 31. and (5) a tank body.
Detailed Description
Example 1
As shown in fig. 1, a building gray water recycling system includes a rectangular water tank 9 communicating with a drain pipe 6 of a house of an upper story and a toilet wash pipe 15 communicating with the bottom of the water tank 9. The water tank 9 is fixedly arranged at a position, close to the roof, of the house on the upper floor, and the hand washing basin 4 and the floor drain of the house on the upper floor are both connected with the drainage pipe 6. The toilet flushing pipe 15 is connected with a water inlet 17 of a urinal 17, the drain pipe 6 is provided with a three-way electromagnetic valve 8, an inlet on the left side of the three-way electromagnetic valve 8 is connected with the drain pipe 6, an outlet on the right side of the three-way electromagnetic valve 8 is communicated with the top of the water tank 9, an outlet on the lower side of the three-way electromagnetic valve 8 is connected with a bypass pipe 12, and the right end of the bypass pipe 12 is communicated with a sewer pipe 21 of a building. The toilet flushing pipe 15 is provided with a second electromagnetic valve 13, a second liquid level switch 11 is arranged in the water tank 9 close to the bottom, and a first liquid level switch 10 is arranged in the water tank 9 close to the top.
When the liquid level in the water tank 9 is lower than the second liquid level switch 11, the grey water flowing into the water discharge pipe 6 flows into the water tank 9 through the upper part of the water tank 9 after passing through the three-way electromagnetic valve 8. When the toilet is needed to be flushed, the second electromagnetic valve 13 is opened, and water in the water tank 9 flows through the toilet flushing pipe 15 to flush the toilet.
When the liquid level in the water tank 9 is higher than the first liquid level switch 10, the three-way electromagnetic valve 8 acts, and at the moment, the grey water flowing into the drain pipe 6 flows through the three-way electromagnetic valve 8, then flows downwards into the bypass pipe 12 and then flows into the sewer pipe 21, so that the overflow of the water tank 9 is prevented.
The inlet of the S-bend 5 of the drain pipe 6 is connected with a first flushing pipe 2, the left end of the first flushing pipe 2 is communicated with a water feeding pipe 1 of a building, and a first electromagnetic valve 3 is arranged on the first flushing pipe 2.
The first solenoid valve 3 is operated at a timing to flush the drain pipe 6 and the bypass pipe 12, thereby preventing the clogging of the drain pipe 6 and the bypass pipe 12 due to the accumulation of dirt.
The toilet flushing pipe 15 is connected with a second flushing pipe 16 at a position close to an outlet at the lower end of the second electromagnetic valve 13, the left end of the second flushing pipe 16 is connected with the water feeding pipe 1, and a third electromagnetic valve 14 is arranged on the second flushing pipe 16.
After the toilet flushing is completed each time, the third electromagnetic valve 14 is opened to flush the toilet flushing pipe 15, so that the blockage caused by the deposition of dirt in the toilet flushing pipe 15 is prevented.
Example 2
As shown in fig. 2 and 3, the present embodiment is different from embodiment 1 in that:
a filter tank 18 is arranged on the water discharge pipe 6 between the three-way electromagnetic valve 8 and the water tank 9, and the filter tank 18 comprises a vertical closed tank and a cylindrical filter screen 22 vertically and fixedly arranged in the tank. The can comprises a can body 31 at the lower part and a can cover 24 screwed on the top of the can body 31, the can cover 24 compresses the filter screen 22 in the can body 31, and the interior of the can is divided into two cavities, namely an inner cavity in the filter screen 22 and an outer cavity outside the filter screen 22. The water inlet 23 that is equipped with interior cavity intercommunication is equipped with in cover 24 left side, jar body 31 right side is equipped with the delivery port 25 with outer cavity intercommunication, jar body 31 bottom is equipped with the drain 30 with the conical storage dirty room intercommunication of interior cavity lower part, the water inlet 23 links to each other with grey water arrival's drain pipe 6, delivery port 25 and grey water arrival's drain pipe 6 intercommunication.
The sewage outlet 30 is fixedly connected with a sewage pipe 20, the right end of the sewage pipe 20 is connected with a sewer pipe 21, and a fourth electromagnetic valve 19 is arranged on the sewage pipe 20.
The grey water flows into the inner cavity body through the water inlet, is filtered by the filter screen 22 and then flows into the water tank 9 through the water outlet 25 so as to reduce the content of dirt in the water tank 9, prevent the toilet flushing pipe 15 from being blocked or prevent the dirt from aggregating and precipitating in the water tank 9 and reduce the maintenance workload of the water tank 9.
After the fourth electromagnetic valve 19 is opened, the filtered dirt in the dirt storage chamber can be discharged.
Example 3
As shown in fig. 4, the present embodiment is different from embodiment 2 in that:
be equipped with scraping ring 26 in the filter screen 22, scraping ring 26's the outside supports the inboard at filter screen 22, scraping ring 26 is coaxial with filter screen 22, fixedly connected with pull rod 27 on scraping ring 26, pull rod 27 and cover 24 run through sliding connection, be equipped with the sealing washer between pull rod 27 and the cover 24.
The pull rod 27 is pulled periodically to scrape off dirt on the inner wall of the filter screen 22, so as to reduce the resistance of the filter screen 22 and prevent the filter screen 22 from being blocked by the dirt.
Example 4
As shown in fig. 5, the present embodiment is different from embodiment 2 in that:
an elastic spiral belt 28 is arranged in the filter screen 22, the outer side of the spiral belt 28 is abutted against the inner side of the filter screen 22, and a motor 29 for driving the spiral belt 28 to rotate is arranged outside the tank. The center of the spiral belt 28 is fixedly provided with a rotating shaft, and the motor 29 is in magnetic coupling transmission connection with the rotating shaft.
The motor 29 is rotated periodically to scrape off the dirt on the inner wall of the filter screen 22, so as to reduce the resistance of the filter screen 22, prevent the dirt from blocking the filter screen 22 and save manpower.
The above-mentioned embodiments are described in detail and specifically for the purpose of illustrating the technical ideas and features of the present invention, and it is an object of the present invention to enable those skilled in the art to understand the contents of the present invention and to implement the same, but not to limit the present invention only by the embodiments, and it is not limited to the scope of the present invention, i.e. equivalent changes or modifications made within the spirit of the present invention, and it is within the scope of the present invention for those skilled in the art to make local modifications within the system and changes or modifications between subsystems without departing from the structure of the present invention. At present, the technical scheme of the application has been subjected to pilot plant test, namely small-scale experiment before large-scale mass production of products; after the pilot test is finished, the investigation for the use of the user is carried out in a small range, and the investigation result shows that the satisfaction degree of the user is higher; now, the preparation of products for official production and industrialization have been started.

Claims (8)

1. A building ash water recycling system is characterized by comprising a water tank (9) communicated with a drainage pipe (6) of a building on the upper floor and a toilet flushing pipe (15) communicated with the bottom of the water tank (9), wherein the toilet flushing pipe (15) is connected with a water inlet of a toilet (17), a three-way electromagnetic valve (8) is arranged on the drainage pipe (6), an inlet of the three-way electromagnetic valve (8) is connected with the drainage pipe (6), one outlet of the three-way electromagnetic valve (8) is communicated with the top of the water tank (9), the other outlet of the three-way electromagnetic valve (8) is connected with a bypass pipe (12), and the bypass pipe (12) is communicated with a sewer pipe (21) of a building; the toilet flushing device is characterized in that a second electromagnetic valve (13) is arranged on the toilet flushing pipe (15), a second liquid level switch (11) is arranged in the water tank (9) close to the bottom, and a first liquid level switch (10) is arranged in the water tank (9) close to the top.
2. The building gray water recycling system according to claim 1, characterized in that a first flushing pipe (2) is connected to the drain pipe (6), one end of the first flushing pipe (2) far away from the drain pipe (6) is communicated with a water supply pipe (1) of a building, and a first electromagnetic valve (3) is arranged on the first flushing pipe (2).
3. The building ash water recycling system according to claim 1, wherein the toilet flushing pipe (15) is connected with a second flushing pipe (16) at a position close to the outlet of the second electromagnetic valve (13), one end of the second flushing pipe (16) far away from the toilet flushing pipe (15) is connected with the water feeding pipe (1), and the second flushing pipe (16) is provided with a third electromagnetic valve (14).
4. The building gray water recycling system of claim 1, characterized in that a filter tank (18) is arranged on the drain pipe (6) between the three-way electromagnetic valve (8) and the water tank (9), the filter tank (18) comprises a vertically closed tank and a cylindrical filter screen (22) vertically and fixedly arranged in the tank, the filter screen (22) divides the interior of the tank into two cavities, namely an inner cavity in the filter screen (22) and an outer cavity outside the filter screen (22); the inner cavity is communicated with a drainage pipe (6) for the incoming direction of the grey water, and the outer cavity is communicated with the drainage pipe (6) for the outgoing direction of the grey water.
5. The building ash water recycling system according to claim 4, wherein a sewage outlet (30) communicated with the inner cavity is arranged at the bottom of the tank, a sewage pipe (20) is fixedly connected to the sewage outlet (30), one end of the sewage pipe (20) far away from the tank is connected with a sewer pipe (21), and a fourth electromagnetic valve (19) is arranged on the sewage pipe (20).
6. A building ash water recycling system according to claim 4, characterized in that a scraping ring (26) is arranged in the filter screen (22), the outer side of the scraping ring (26) abuts against the inner side of the filter screen (22), the scraping ring (26) is coaxial with the filter screen (22), a pull rod (27) is fixedly connected to the scraping ring (26), the pull rod (27) is connected with the top of the tank in a penetrating and sliding manner, and the pull rod (27) is in sealing fit with the tank.
7. A building ash water recycling system according to claim 4, characterized in that an elastic spiral belt (28) is arranged in the filter screen (22), the outer side of the spiral belt (28) is abutted against the inner side of the filter screen (22), and a motor (29) for driving the spiral belt (28) to rotate is arranged outside the tank.
8. The building gray water recycling system as claimed in claim 7, wherein a rotating shaft is fixedly arranged at the center of said spiral belt (28), and said motor (29) is magnetically coupled and connected with the rotating shaft.
CN202210355607.6A 2022-04-06 2022-04-06 Building ash water recycling system Pending CN114703918A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210355607.6A CN114703918A (en) 2022-04-06 2022-04-06 Building ash water recycling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210355607.6A CN114703918A (en) 2022-04-06 2022-04-06 Building ash water recycling system

Publications (1)

Publication Number Publication Date
CN114703918A true CN114703918A (en) 2022-07-05

Family

ID=82172036

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210355607.6A Pending CN114703918A (en) 2022-04-06 2022-04-06 Building ash water recycling system

Country Status (1)

Country Link
CN (1) CN114703918A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203944189U (en) * 2014-04-18 2014-11-19 石家庄市新科顺达工贸有限公司 A kind of large flow self-cleaning filter
CN204098152U (en) * 2014-10-17 2015-01-14 马潇健 A kind of campus water-saving device
CN211357949U (en) * 2019-10-18 2020-08-28 北京诺百金科水处理技术有限公司 A preliminary treatment filtration equipment for pure water preparation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203944189U (en) * 2014-04-18 2014-11-19 石家庄市新科顺达工贸有限公司 A kind of large flow self-cleaning filter
CN204098152U (en) * 2014-10-17 2015-01-14 马潇健 A kind of campus water-saving device
CN211357949U (en) * 2019-10-18 2020-08-28 北京诺百金科水处理技术有限公司 A preliminary treatment filtration equipment for pure water preparation

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Application publication date: 20220705