Mobile membrane process water production and injection device

Abstract

The utility model discloses a mobile membrane method filters injection water device, including removal car, storage tank, ultrafilter, water pump, inlet pipeline, circulation pipeline, water taking pipeline and water taking valve, wherein, the inlet pipeline is used for connecting purified water water point to access purified water, the water inlet of ultrafilter is linked with inlet pipeline, the water outlet of ultrafilter is linked with the entrance of storage tank, the outlet of water pump is linked with the outlet of storage tank, the outlet of water pump is linked with one end of circulation pipeline, the other end of circulation pipeline is linked with storage tank, one end of water taking pipeline is linked with circulation pipeline, water taking valve is connected in water taking pipeline, storage tank, ultrafilter, water pump, inlet pipeline, circulation pipeline and water taking pipeline all set up on removal car. The utility model discloses can move to the place that needs to use injection water and filter and produce injection water, can improve the convenience of injection water water.

Description

Technical Field

[0001] This utility model relates to a mobile membrane filtration device for producing injectable water. Background Technology

[0002] Currently, ultrafiltration membrane filtration is a common method for producing water for injection. For example, Chinese Patent CN204454761U discloses an ultrafiltration water for injection system that can produce water for injection through ultrafiltration membrane filtration. However, existing ultrafiltration water for injection systems are usually immobile and can only be used in fixed locations. Therefore, they can only produce water for injection at fixed locations. This often results in the location where water for injection is needed being far from the location where it is produced, leading to inconvenience in using the water for injection. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a mobile membrane filtration device for producing injectable water. It can be moved to the location where injectable water is needed and filter to produce injectable water, thereby improving the convenience of using injectable water.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a mobile membrane filtration water injection device, including a mobile vehicle, a storage tank, an ultrafiltration membrane, a water pump, an inlet pipeline, a circulation pipeline, a water intake pipeline, and a water intake valve;

[0005] The inlet pipe is used to connect to the purified water point so that purified water can be supplied;

[0006] The inlet of the ultrafiltration membrane is connected to the inlet pipeline, and the outlet of the ultrafiltration membrane is connected to the inlet of the storage tank.

[0007] The inlet of the water pump is connected to the outlet of the storage tank, the outlet of the water pump is connected to one end of the circulation pipeline, and the other end of the circulation pipeline is connected to the storage tank.

[0008] One end of the water intake pipeline is connected to the circulation pipeline, and the water intake valve is connected in the water intake pipeline;

[0009] The storage tank, the ultrafiltration membrane, the water pump, the inlet pipe, the circulation pipe, and the water intake pipe are all mounted on the mobile vehicle.

[0010] Furthermore, at least a portion of the water inlet pipe is a flexible hose.

[0011] Further, a specific structure of the purified water usage point is provided, wherein the purified water usage point includes a water supply pipeline, a water supply valve, and a connector pipe;

[0012] One end of the water supply valve is connected to the water supply pipeline;

[0013] The connector pipe is connected to the other end of the water supply valve;

[0014] One end of the water inlet pipe is provided with a docking connector for connecting with the connector pipe.

[0015] Further, a specific structure of the aforementioned mating joint is provided, wherein the mating joint includes a pipe seat, a pipe body, a sliding sleeve, a spring, and a retaining ball;

[0016] The pipe seat is connected to one end of the water inlet pipe, and the pipe seat is provided with a connection channel communicating with the water inlet pipe;

[0017] The tube body is connected to the tube seat, and the tube body is provided with a tube channel communicating with the connecting channel;

[0018] The tube body is provided with at least two locking holes arranged sequentially along the circumference, and the locking holes extend radially and communicate with the tube channel;

[0019] The connector tube is provided with an insertion part for insertion into the tube channel. The outer wall of the insertion part is provided with a locking groove that aligns with the locking hole when the insertion part is inserted into the tube channel. At least one sealing ring is also embedded on the outer wall of the insertion part for sealing and abutting against the inner wall of the tube channel.

[0020] The locking ball corresponds to the locking hole one by one and is installed in the corresponding locking hole. One end of the locking hole that communicates with the tube channel is provided with a boss that protrudes radially inward. The boss is used to abut against the locking ball to prevent the locking ball from sliding into the tube channel.

[0021] The sliding sleeve is slidably fitted onto the tube body, and the inner wall of the sliding sleeve is provided with a conical part for abutting against the locking ball in the lock hole;

[0022] The spring is sleeved on the tube body and located between the sliding sleeve and the tube seat. One end of the spring abuts against the end face of the tube seat, and the other end of the spring abuts against the sliding sleeve. The spring is used to drive the sliding sleeve to slide until the conical part abuts against the retaining bead and drive the retaining bead to slide radially inward until it is engaged in the locking groove.

[0023] Furthermore, an inlet valve is connected to the inlet pipeline, and a product water valve is connected between the outlet of the ultrafiltration membrane and the inlet of the storage tank.

[0024] Furthermore, the mobile membrane filtration water injection device also includes a backwashing pipeline and a sewage discharge pipeline;

[0025] One end of the backwash pipeline is connected to the outlet of the water pump, and the other end of the backwash pipeline is connected to the backwash port of the ultrafiltration membrane.

[0026] The sewage discharge pipeline is connected to the inlet of the ultrafiltration membrane;

[0027] A backwash valve is connected to the backwash pipeline, a drain valve is connected to the drain pipeline, and an on / off valve is connected to the circulation pipeline.

[0028] Furthermore, the mobile membrane filtration water injection device also includes controllers connected to the inlet valve, the product water valve, the on / off valve, the backwash valve, and the drain valve, respectively. The inlet valve, the product water valve, the on / off valve, the backwash valve, and the drain valve are all solenoid valves.

[0029] Furthermore, a pressure gauge is connected to the outlet of the water pump, and the water pump is a centrifugal pump.

[0030] Furthermore, a flow meter is connected to the inlet of the ultrafiltration membrane.

[0031] Furthermore, one end of the circulation pipeline is connected to the outlet of the water pump, and the other end of the circulation pipeline is connected to the nozzle in the storage tank.

[0032] After adopting the above technical solution, the mobile vehicle is first moved to the location where injection water is needed. Then, the inlet pipe is connected to the nearest purified water point. The purified water supplied by the purified water point flows from the inlet pipe into the ultrafiltration membrane for filtration, producing qualified injection water. The injection water flows from the outlet of the ultrafiltration membrane into the storage tank for storage. When the injection water in the storage tank reaches a certain level, the water pump can be started to pump the injection water in the storage tank into the circulation pipeline. Then, the injection water in the circulation pipeline flows back to the storage tank. When injection water is needed, the water intake valve is opened, allowing a portion of the injection water in the circulation pipeline to flow out from the water intake pipeline, thus meeting the injection water demand. When no water is needed, the water intake valve is closed, allowing all the injection water in the circulation pipeline to flow back to the storage tank. The mobile membrane filtration injection water production device of this embodiment can be moved to any location where injection water is needed by the mobile vehicle and produces injection water through ultrafiltration membrane filtration, greatly improving the convenience of injection water use. Attached Figure Description

[0033] Figure 1 This is a process flow diagram of the mobile membrane filtration water injection device of this utility model;

[0034] Figure 2 This is a schematic diagram of the structure of the butt joint of this utility model when it is connected to the joint pipe;

[0035] Figure 3 This is a schematic diagram of the structure of the butt joint and the joint pipe of this utility model when they are separated.

[0036] In the diagram: 1. Storage tank; 2. Ultrafiltration membrane; 3. Water pump; 4. Inlet pipe; 5. Circulation pipe; 6. Water intake pipe; 7. Water intake valve; 8. Purified water usage point; 9. Water supply pipe; 10. Water supply valve; 11. Connector pipe; 12. Pipe seat; 13. Pipe body; 14. Sliding sleeve; 15. Spring; 16. Clamping ball; 17. Connecting channel; 18. Pipe channel; 19. Locking hole; 20. Insertion part; 21. Locking groove; 22. Sealing ring; 23. Boss part; 24. Conical part; 25. Inlet valve; 26. Product water valve; 27. Backwash pipe; 28. Sewage pipe; 29. ​​Backwash valve; 30. Sewage valve; 31. On / off valve; 32. Pressure gauge; 33. Flow meter; 34. Nozzle. Detailed Implementation

[0037] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0038] like Figure 1 As shown, a mobile membrane filtration water injection device includes a mobile vehicle, a storage tank 1, an ultrafiltration membrane 2, a water pump 3, an inlet pipe 4, a circulation pipe 5, a water intake pipe 6, and a water intake valve 7.

[0039] The water inlet pipe 4 is used to connect to the purified water point 8 so that purified water can be supplied;

[0040] The inlet of the ultrafiltration membrane 2 is connected to the inlet pipe 4, and the outlet of the ultrafiltration membrane 2 is connected to the inlet of the storage tank 1.

[0041] The inlet of the water pump 3 is connected to the outlet of the storage tank 1, the outlet of the water pump 3 is connected to one end of the circulation pipeline 5, and the other end of the circulation pipeline 5 is connected to the storage tank 1.

[0042] One end of the water intake pipe 6 is connected to the circulation pipe 5, and the water intake valve 7 is connected in the water intake pipe 6;

[0043] The storage tank 1, the ultrafiltration membrane 2, the water pump 3, the inlet pipe 4, the circulation pipe 5, and the water intake pipe 6 are all mounted on the mobile vehicle. Specifically, the mobile vehicle is first moved to the location where injection water is needed. Then, the inlet pipe 4 is connected to the nearest purified water point 8. The purified water supplied by the purified water point 8 flows from the inlet pipe 4 into the ultrafiltration membrane 2 for filtration, producing qualified injection water. The injection water flows from the outlet of the ultrafiltration membrane 2 into the storage tank 1 for storage. When the injection water in the storage tank 1 reaches a certain level, the water pump 3 can be activated to pump the injection water from the storage tank 1 into the circulation pipe 5. Then, the injection water in the circulation pipe 5 flows back to the storage tank 1 along the circulation pipe 5. When injection water is needed, the water intake valve 7 is opened, allowing a portion of the injection water in the circulation pipeline 5 to flow out from the water intake pipeline 6, thus meeting the water demand for injection water. When no water is needed, the water intake valve 7 is closed, allowing all the injection water in the circulation pipeline 5 to flow back into the storage tank 1. The mobile membrane filtration injection water production device of this embodiment can be moved to any location where injection water is needed via the mobile vehicle and produced through filtration by the ultrafiltration membrane 2, greatly improving the convenience of injection water use. More specifically, multiple purified water usage points 8 can be distributed throughout the workshop. Chinese Patent CN105016556A discloses a high-quality pharmaceutical purified water supply system with multiple purified water usage points 8, which can be distributed in different workshops or at different locations within a single workshop. In this embodiment, after moving the mobile vehicle to the location where injection water is needed, the inlet pipeline 4 is connected to the nearest purified water usage point 8. More specifically, the mobile membrane filtration water injection device of this application embodiment is mainly suitable for situations where the water injection volume is less than 500L / h. The specific structure of the mobile vehicle is prior art well known to those skilled in the art, and will not be described in detail in this embodiment.

[0044] like Figure 1 As shown, at least a portion of the water inlet pipe 4 is a flexible hose; specifically, the length of the flexible hose needs to be set sufficiently long according to usage requirements.

[0045] like Figure 1 As shown, the purified water water point 8 may include a water supply pipeline 9, a water supply valve 10, and a connector pipe 11;

[0046] One end of the water supply valve 10 is connected to the water supply pipeline 9;

[0047] The connector pipe 11 is connected to the other end of the water supply valve 10;

[0048] One end of the water inlet pipe 4 is provided with a docking connector for connecting with the connector pipe 11.

[0049] Specifically, when the mobile vehicle moves to the location where water injection is needed, the connector on the inlet pipe 4 is connected to the connector pipe 11, and then the water supply valve 10 is opened. This allows the purified water in the water supply pipe 9 to flow sequentially through the water supply valve 10, the connector pipe 11, and the connector before flowing into the inlet pipe 4, and then into the ultrafiltration membrane 2 from the inlet pipe 4. The water supply pipe 9 is a U-shaped pipe.

[0050] like Figures 1-3 As shown, the mating joint includes a pipe seat 12, a pipe body 13, a sliding sleeve 14, a spring 15, and a retaining ball 16;

[0051] The pipe seat 12 is connected to one end of the water inlet pipe 4, and the pipe seat 12 is provided with a connecting channel 17 that communicates with the water inlet pipe 4;

[0052] The tube body 13 is connected to the tube seat 12, and the tube body 13 is provided with a tube channel 18 communicating with the connecting channel 17;

[0053] The tube body 13 is provided with at least two locking holes 19 arranged sequentially in the circumferential direction, and the locking holes 19 extend radially and communicate with the tube channel 18;

[0054] The connector tube 11 is provided with an insertion part 20 for insertion into the tube channel 18. The outer wall of the insertion part 20 is provided with a locking groove 21 that aligns with the locking hole 19 when the insertion part 20 is inserted into the tube channel 18. At least one sealing ring 22 is also embedded on the outer wall of the insertion part 20 for sealing and abutting against the inner wall of the tube channel 18.

[0055] The locking bead 16 corresponds to the locking hole 19 and is installed in the corresponding locking hole 19. The end of the locking hole 19 that communicates with the pipe channel 18 is provided with a boss portion 23 that protrudes radially inward. The boss portion 23 is used to abut against the locking bead 16 to prevent the locking bead 16 from sliding into the pipe channel 18.

[0056] The sliding sleeve 14 is slidably sleeved on the tube body 13, and the inner wall of the sliding sleeve 14 is provided with a conical part 24 for abutting against the locking bead 16 in the lock hole 19.

[0057] The spring 15 is sleeved on the tube body 13 and located between the sliding sleeve 14 and the tube seat 12. One end of the spring 15 abuts against the end face of the tube seat 12, and the other end of the spring 15 abuts against the sliding sleeve 14. The spring 15 is used to drive the sliding sleeve 14 to slide until the conical part 24 abuts against the retaining bead 16 and drives the retaining bead 16 to slide radially inward until it is engaged in the locking groove 21.

[0058] Specifically, when connecting the connector on the inlet pipe 4 to the connector pipe 11, first slide the sliding sleeve 14 into place in the direction of compressing the spring 15. Then, insert the insertion part 20 on the connector pipe 11 into the pipe channel 18 so that the locking groove 21 is aligned with the locking hole 19, and the insertion part 20 is sealed to the pipe body 13 by the sealing ring 22. Then, release the sliding sleeve 14, the spring 15 rebounds and extends, and drives the sliding sleeve 14 to slide, so that the conical part 24 on the sliding sleeve 14 abuts against the retaining bead 16 and drives the retaining bead 16 to slide radially inward until it is engaged in the locking groove 21, thereby preventing the insertion part 20 from being pulled out of the pipe channel 18. Then, open the water supply valve 10 so that the purified water in the water supply pipe 9 flows sequentially through the water supply valve 10, the connector pipe 11, the pipe channel 18, and the connecting channel 17 before flowing into the inlet pipe 4. Then, the purified water flows from the inlet pipe 4 into the ultrafiltration membrane 2. When disassembling the connector and connector tube 11, first slide the sliding sleeve 14 in the direction of compressing the spring 15 to disengage the conical part 24 from the retaining bead 16. Then, pull the insertion part 20 out of the tube channel 18. Since the conical part 24 is disengaged from the retaining bead 16 at this time, the retaining bead 16 will not get stuck in the locking groove 21, preventing the insertion part 20 from being pulled out. The quick assembly and disassembly of the connector and connector tube 11 allows the water inlet pipe 4 to be quickly connected to or disconnected from the purified water point 8, making it more convenient to use.

[0059] like Figure 1 As shown, an inlet valve 25 is connected to the inlet pipe 4, and a product water valve 26 is connected between the outlet of the ultrafiltration membrane 2 and the inlet of the storage tank 1.

[0060] like Figure 1 As shown, the mobile membrane filtration water injection device may further include a backwashing pipeline 27 and a sewage discharge pipeline 28.

[0061] One end of the backwash pipeline 27 is connected to the outlet of the water pump 3, and the other end of the backwash pipeline 27 is connected to the backwash port of the ultrafiltration membrane 2.

[0062] The sewage discharge pipe 28 is connected to the water inlet of the ultrafiltration membrane 2;

[0063] A backwash valve 29 is connected to the backwash pipeline 27, a drain valve 30 is connected to the drain pipeline 28, and an on / off valve 31 is connected to the circulation pipeline 5. Specifically, during normal production of injection water, the inlet valve 25, the product water valve 26, and the on / off valve 31 are opened, while the backwash valve 29 and the drain valve 30 are closed, and the water pump 3 remains running. During backwashing, the inlet valve 25, the product water valve 26, and the on / off valve 31 are closed, while the backwash valve 29 and the drain valve 30 are opened, and the water pump 3 remains running. At this time, the injection water in the storage tank 1 will flow from the backwash port into the ultrafiltration membrane 2 under the pumping of the water pump 3, and then flow from the inlet of the ultrafiltration membrane 2 into the drain pipeline 28 for discharge. This allows for backwashing of the ultrafiltration membrane 2 to remove contaminants, thereby mitigating membrane flux decline, restoring membrane performance, and extending membrane lifespan.

[0064] Specifically, the mobile membrane filtration water injection device may further include a controller connected to the inlet valve 25, the product water valve 26, the on / off valve 31, the backwash valve 29, and the drain valve 30, respectively. The inlet valve 25, the product water valve 26, the on / off valve 31, the backwash valve 29, and the drain valve 30 are all solenoid valves. Specifically, the controller is used to control the opening and closing of the inlet valve 25, the product water valve 26, the on / off valve 31, the backwash valve 29, and the drain valve 30. The controller is also connected to the water pump 3 and is used to control the start and stop of the water pump 3. The controller may be a PLC controller.

[0065] like Figure 1 As shown, the outlet of the water pump 3 is connected to a pressure gauge 32, the water pump 3 is a centrifugal pump, the inlet of the ultrafiltration membrane 2 is connected to a flow meter 33, one end of the circulation pipeline 5 is connected to the outlet of the water pump 3, and the other end of the circulation pipeline 5 is connected to the nozzle 34 in the storage tank 1.

[0066] In summary, the mobile vehicle is first moved to the location where injection water is needed. Then, the inlet pipe 4 is connected to the nearest purified water point 8. The purified water supplied by the purified water point 8 flows from the inlet pipe 4 into the ultrafiltration membrane 2 for filtration, producing qualified injection water. The injection water flows from the outlet of the ultrafiltration membrane 2 into the storage tank 1 for storage. When the injection water in the storage tank 1 reaches a certain level, the water pump 3 can be started to pump the injection water in the storage tank 1 into the circulation pipe 5. Then, the injection water in the circulation pipe 5 will flow back to the storage tank 1 along the circulation pipe 5. When injection water is needed, the water intake valve 7 is opened, allowing a portion of the injection water in the circulation pipe 5 to flow out from the water intake pipe 6 to meet the injection water demand. When no water is needed, the water intake valve 7 is closed, allowing all the injection water in the circulation pipe 5 to flow back to the storage tank 1. The mobile membrane filtration device for producing injectable water according to the embodiments of this application can be moved to any location where injectable water is needed by the mobile vehicle and produced by filtering through the ultrafiltration membrane 2, which greatly improves the convenience of using injectable water.

[0067] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mobile membrane filtration device for producing injectable water, characterized in that, It includes a mobile vehicle, a storage tank (1), an ultrafiltration membrane (2), a water pump (3), an inlet pipe (4), a circulation pipe (5), a water intake pipe (6), and a water intake valve (7); The water inlet pipe (4) is used to connect to the purified water point (8) so that purified water can be supplied; The inlet of the ultrafiltration membrane (2) is connected to the inlet pipe (4), and the outlet of the ultrafiltration membrane (2) is connected to the inlet of the storage tank (1). The inlet of the water pump (3) is connected to the outlet of the storage tank (1), the outlet of the water pump (3) is connected to one end of the circulation pipeline (5), and the other end of the circulation pipeline (5) is connected to the storage tank (1). One end of the water intake pipe (6) is connected to the circulation pipe (5), and the water intake valve (7) is connected in the water intake pipe (6); The storage tank (1), the ultrafiltration membrane (2), the water pump (3), the water inlet pipe (4), the circulation pipe (5), and the water intake pipe (6) are all installed on the mobile vehicle.

2. The mobile membrane filtration water injection device according to claim 1, characterized in that, At least a portion of the water inlet pipe (4) is a flexible hose.

3. The mobile membrane filtration water injection device according to claim 1, characterized in that, The purified water point (8) includes a water supply pipeline (9), a water supply valve (10), and a connector pipe (11); One end of the water supply valve (10) is connected to the water supply pipeline (9); The connector pipe (11) is connected to the other end of the water supply valve (10); One end of the water inlet pipe (4) is provided with a docking connector for connecting with the connector pipe (11).

4. The mobile membrane filtration water injection device according to claim 3, characterized in that, The mating joint includes a pipe seat (12), a pipe body (13), a sliding sleeve (14), a spring (15), and a retaining ball (16); The pipe seat (12) is connected to one end of the water inlet pipe (4), and the pipe seat (12) is provided with a connecting channel (17) communicating with the water inlet pipe (4); The tube body (13) is connected to the tube seat (12), and the tube body (13) is provided with a tube channel (18) communicating with the connecting channel (17); The tube body (13) is provided with at least two locking holes (19) arranged sequentially along the circumference, the locking holes (19) extending radially and communicating with the tube channel (18); The connector tube (11) is provided with an insertion part (20) for insertion into the tube channel (18). The outer wall of the insertion part (20) is provided with a locking groove (21) that aligns with the locking hole (19) when the insertion part (20) is inserted into the tube channel (18). At least one sealing ring (22) for sealing and abutting against the inner wall of the tube channel (18) is also embedded on the outer wall of the insertion part (20). The locking bead (16) corresponds to the locking hole (19) and is installed in the corresponding locking hole (19). The end of the locking hole (19) that communicates with the pipe channel (18) is provided with a boss (23) that protrudes radially inward. The boss (23) is used to abut against the locking bead (16) to prevent the locking bead (16) from sliding into the pipe channel (18). The sliding sleeve (14) is slidably sleeved on the tube body (13), and the inner wall of the sliding sleeve (14) is provided with a conical part (24) for abutting against the locking ball (16) in the lock hole (19); The spring (15) is sleeved on the tube body (13) and located between the sliding sleeve (14) and the tube seat (12). One end of the spring (15) abuts against the end face of the tube seat (12), and the other end of the spring (15) abuts against the sliding sleeve (14). The spring (15) is used to drive the sliding sleeve (14) to slide until the conical part (24) abuts against the retaining bead (16) and drives the retaining bead (16) to slide radially inward until it is engaged in the locking groove (21).

5. The mobile membrane filtration water injection device according to claim 1, characterized in that, The inlet pipe (4) is connected to an inlet valve (25), and a product water valve (26) is connected between the outlet of the ultrafiltration membrane (2) and the inlet of the storage tank (1).

6. The mobile membrane filtration water injection device according to claim 5, characterized in that, It also includes backwashing lines (27) and sewage lines (28); One end of the backwash line (27) is connected to the outlet of the water pump (3), and the other end of the backwash line (27) is connected to the backwash port of the ultrafiltration membrane (2). The sewage pipe (28) is connected to the inlet of the ultrafiltration membrane (2); A backwash valve (29) is connected to the backwash pipeline (27), a drain valve (30) is connected to the drain pipeline (28), and an on / off valve (31) is connected to the circulation pipeline (5).

7. The mobile membrane filtration water injection device according to claim 6, characterized in that, It also includes controllers connected to the inlet valve (25), the product water valve (26), the on / off valve (31), the backwash valve (29), and the drain valve (30), respectively. The inlet valve (25), the product water valve (26), the on / off valve (31), the backwash valve (29), and the drain valve (30) are all solenoid valves.

8. The mobile membrane filtration water injection device according to claim 1, characterized in that, The outlet of the water pump (3) is connected to a pressure gauge (32), and the water pump (3) is a centrifugal pump.

9. The mobile membrane filtration water injection device according to claim 1, characterized in that, The inlet of the ultrafiltration membrane (2) is connected to a flow meter (33).

10. The mobile membrane filtration water injection device according to claim 1, characterized in that, One end of the circulation pipeline (5) is connected to the outlet of the water pump (3), and the other end of the circulation pipeline (5) is connected to the nozzle (34) in the storage tank (1).

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