Automatic drainage device of water pump
By designing an automatic drainage device for water pumps, the automatic continuous water absorption of centrifugal pumps is achieved by using the negative pressure effect, which solves the problem of water shortage when starting the centrifugal pump in the prior art, and removes impurities through reverse flushing, which simplifies operation and improves the water pumping effect.
Patent Information
- Application Number
- CN202421495230.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-27
AI Technical Summary
In production enterprises, the suction port of the centrifugal pump is higher than the height of the pool, resulting in a lack of sufficient water when the centrifugal pump is started, resulting in idling and inability to pump water. The existing water replenishment methods are complicated to operate or have a short service life, and there are problems such as lax sealing and water reflux.
An automatic drainage device for water pump is designed. By injecting water into the drainage chamber, the centrifugal pump and the suction pipe are used to extract water in the drainage chamber to form negative pressure and automatically replenish water, achieving automatic continuous absorption of water. At the same time, water is injected simultaneously during drainage, and water in the drainage chamber is replenished through the water replenishing pipe during maintenance to avoid water shortage. After the water replenishment is completed, drain the excess water back into the pool and rinse the filter cover in reverse to remove impurities.
The automatic continuous water absorption of the centrifugal pump is realized, which simplifies operation, avoids the problem of water deficiency in the drainage chamber, and removes impurities on the filter cover through reverse rinsing, ensuring the water pumping effect.
Smart Images
Figure CN222633488U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water pump diversion, in particular to an automatic water pump diversion device. Background Art
[0002] Some pump rooms are built in production enterprises. However, the water suction port of the centrifugal pump in the pump room is higher than the height of the water pool, and this height is often greater than the maximum water suction height of the centrifugal pump. When the centrifugal pump is started, there is not enough water in the centrifugal pump to meet the water volume required by the self-priming seal of the centrifugal pump. When the centrifugal pump is running, it cannot suck up water and causes the centrifugal pump to run idle, and then the pumping operation cannot be achieved. The operator needs to fill the centrifugal pump with water first, and then start the centrifugal pump to pump water.
[0003] The existing water replenishment methods include: one is to open a hole on the suction pipe of the centrifugal pump, and inject water before starting the centrifugal pump to achieve the purpose of drainage; the other is to install a bottom valve at the bottom of the suction pipe. After the first drainage, when the centrifugal pump is shut down, the water in the suction pipe pushes the bottom valve to close under the action of gravity. When the centrifugal pump is restarted, the water in the suction pipe is used to achieve the drainage effect; although the former has a direct effect, the operation is relatively complicated, and the latter is more convenient than the former in operation, but there is a problem of short service life. Once the bottom valve is corroded for a long time, it will be loosely sealed, resulting in the inability to prevent the water in the suction pipe from flowing back into the pool, and the drainage effect is lost;
[0004] In view of the above technical defects, a solution is now proposed. Utility Model Content
[0005] The purpose of the utility model is to provide an automatic drainage device for a water pump to solve the technical defects mentioned above. The utility model injects water into the drainage chamber, and the centrifugal pump cooperates with the water suction pipe to first extract the water in the drainage chamber, forming a negative pressure to automatically replenish water from the pool, thereby achieving the effect of automatic and continuous water absorption by the centrifugal pump; and simultaneously injects water into the water replenishment chamber during drainage, so that the missing water in the drainage chamber can be replenished through the water replenishment pipe during maintenance to avoid the problem of lack of water in the drainage chamber and inability to drain; and after the water replenishment is completed, the excess water is discharged back to the pool through the connecting pipe, and the filter cover is backwashed to remove filtered impurities.
[0006] This is achieved through the following technical solutions:
[0007] A water pump automatic drainage device comprises a drainage box, wherein a partition is fixedly connected to the inside of the drainage box, and a water replenishment chamber and a drainage chamber are respectively arranged on the top and bottom sides of the partition in the drainage box, and a connecting pipe and a water suction pipe are respectively fixedly connected to the outer walls on both sides of the drainage box, one end of the connecting pipe is connected to the drainage chamber, and the free end of the connecting pipe is fixedly connected to a water suction pipe through a filter tank, and the two ends of the water suction pipe are respectively connected to the water replenishment chamber and the drainage chamber, and a centrifugal pump is fixedly connected to the water suction pipe, and a drain pipe is fixedly connected to the top of the drainage box.
[0008] Preferably, the water outlet end of the connecting pipe is located above one side of the drainage chamber, the water inlet end of the water suction pipe is located below one side of the drainage chamber, and a check valve is fixedly provided on the water suction pipe.
[0009] Preferably, a water injection pipe communicating with the water replenishment chamber is fixedly connected to the top of the drainage box, and a water injection valve is fixedly provided on the water injection pipe.
[0010] Preferably, a water supply pipe is fixedly connected to one side of the drainage box, and both ends of the water supply pipe are respectively connected to the water supply chamber and the drainage chamber, the water inlet end of the water supply pipe is located below one side of the water supply chamber, and a water supply valve is fixedly provided on the water supply pipe.
[0011] Preferably, one end of the water suction pipe is fixedly connected to the bottom of the filter tank, the free end of the connecting pipe is fixedly connected to the annular outer wall of the filter tank, a filter cover is provided inside the filter tank and on the outside of the water suction pipe, and the top of the filter tank is detachably connected to a tank cover that abuts the filter cover.
[0012] The beneficial effects of the utility model are as follows:
[0013] When the utility model is in use, after water is injected into the drainage chamber, the centrifugal pump cooperates with the water suction pipe to first extract the water in the drainage chamber, and as the amount of water in the drainage chamber decreases, a negative pressure effect is formed, and then cooperates with the water suction pipe extending into the pool to automatically extract the water in the pool and replenish it into the drainage chamber, thereby achieving the effect of automatic and continuous water absorption by the centrifugal pump; and during the drainage process of the water suction pipe, water is simultaneously injected into the water replenishment chamber, so that when the centrifugal pump is shut down for maintenance, the missing water in the drainage chamber can be replenished through the water replenishment pipe by only opening the water replenishment valve, effectively avoiding the problem of water shortage in the drainage chamber caused by repeated start and stop of the centrifugal pump, and then being unable to perform drainage; and after the water replenishment in the drainage chamber is completed, the excess water is discharged back into the pool through the connecting pipe and the water suction pipe. In this process, the reflux water reversely flushes the filter cover in the filter tank, and simultaneously completes the removal of impurities on the filter cover, and the tank cover is detachably connected to the filter tank, so that the filter cover can be taken out, which is convenient for effectively cleaning impurities that are difficult to remove by flushing, thereby ensuring the later pumping effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The utility model is further described below in conjunction with the accompanying drawings;
[0015] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;
[0016] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;
[0017] Figure 3 It is a schematic diagram of the internal structure of the drainage box of the utility model;
[0018] Figure 4 It is a schematic diagram of the internal structure of the filter tank of the utility model.
[0019] Legend:
[0020] 1. Drainage box; 11. Partition; 12. Water supply chamber; 13. Drainage chamber; 14. Connecting pipe; 15. Water suction pipe; 16. Centrifugal pump; 17. Drain pipe; 18. Check valve; 19. Water injection pipe; 110. Water injection valve; 111. Water supply pipe; 112. Water supply valve;
[0021] 2. Filter tank; 21. Suction pipe; 22. Filter cover; 23. Tank cover. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] Embodiment 1: The problem that the operation process in the prior art is relatively complicated or it is difficult to ensure the drainage effect can be solved by the following solution;
[0024] See also Figure 1 - Figure 4As shown, in this embodiment, a water pump automatic drainage device comprises a drainage box 1, the interior of the drainage box 1 is fixedly connected with a partition 11, and the drainage box 1 is located at the top and bottom sides of the partition 11 respectively. The volume of the water replenishment chamber 12 is larger than the volume of the drainage chamber 13, so that after the water replenishment chamber 12 replenishes the drainage chamber 13 with water, the excess water is discharged back to the pool through the connecting pipe 14 and the water suction pipe 21, and the impurities inside the filter tank 2 are washed and removed. The outer walls on both sides of the drainage box 1 are respectively fixedly connected with a connecting pipe 14 and a water suction pipe 15, the connecting pipe 14 is used to connect the drainage chamber 13 with the water suction pipe 21, and the water suction pipe 15 is used to cooperate with the centrifugal pump 16 to extract the water in the drainage chamber 13, one end of the connecting pipe 14 is connected with the drainage chamber 13, and the free end of the connecting pipe 14 is fixedly connected with the water suction pipe 21 through the filter tank 2;
[0025] The centrifugal pump 16 draws water from the drainage chamber 13. As the amount of water in the drainage chamber 13 decreases, a negative pressure effect is formed inside the drainage chamber 13. Together with the water suction pipe 21 extending into the pool, the water in the pool is automatically pumped and replenished into the drainage chamber 13. The water suction speed of the centrifugal pump 16 and the water inlet speed of the water suction pipe 21 are the same, and the liquid level in the drainage chamber 13 will not continue to drop, thereby achieving the automatic and continuous water suction effect of the centrifugal pump 16. The two ends of the water suction pipe 15 are respectively connected to the water replenishment chamber 12 and the drainage chamber 13, so that the water suction pipe 15 can simultaneously fill the water replenishment chamber 12 during drainage, until the water replenishment chamber 12 is filled with water and then discharged through the drain pipe 17. The centrifugal pump 16 is fixedly connected to the water suction pipe 15, and the drain pipe 17 is fixedly connected to the top of the drainage box 1.
[0026] The water outlet end of the connecting pipe 14 is located above one side of the drainage chamber 13 to prevent the water in the drainage chamber 13 from being completely discharged back into the pool through the connecting pipe 14 when the centrifugal pump 16 is shut down, thereby failing to achieve drainage and water absorption when the centrifugal pump 16 is started for the second time. The water inlet end of the suction pipe 15 is located below one side of the drainage chamber 13, so that before the centrifugal pump 16 is started, part of the water in the drainage chamber 13 enters the inside of the centrifugal pump 16, thereby achieving a self-priming sealing effect of the centrifugal pump 16. A check valve 18 is fixedly provided on the suction pipe 15 to prevent the water in each pipe from flowing back and driving the water in the water replenishment chamber 12 to flow back when the centrifugal pump 16 is shut down.
[0027] A water injection pipe 19 connected to the water replenishment chamber 12 is fixedly connected to the top of the drainage box 1, and a water injection valve 110 is fixedly provided on the water injection pipe 19, which is used to inject water into the drainage chamber 13 when the centrifugal pump 16 is started for the first time, thereby satisfying the self-priming seal when the centrifugal pump 16 is started for the first time to absorb water. The water injection valve 110 is used to prevent water from being discharged through the water injection pipe 19 when it is discharged.
[0028] A water replenishment pipe 111 is fixedly connected to one side of the drainage box 1, and both ends of the water replenishment pipe 111 are respectively connected to the water replenishment chamber 12 and the drainage chamber 13. The water inlet end of the water replenishment pipe 111 is located at the lower side of the water replenishment chamber 12, which helps to drain all the water in the water replenishment chamber 12. A water replenishment valve 112 is fixedly provided on the water replenishment pipe 111. The water replenishment chamber 12 is filled during drainage. When the centrifugal pump 16 is shut down for maintenance, the missing water in the drainage chamber 13 is replenished through the water replenishment pipe 111 by opening the water replenishment valve 112, which effectively avoids the problem of water shortage in the drainage chamber 13 caused by repeated starting and stopping of the centrifugal pump 16, and the inability to drain. It also solves the problem of the need to repeat the more complicated water injection operation when the centrifugal pump 16 is started for the first time.
[0029] One end of the water extraction pipe 21 is fixedly connected to the bottom of the filter tank 2, and the free end of the connecting pipe 14 is fixedly connected to the annular outer wall of the filter tank 2. A filter cover 22 is provided inside the filter tank 2 and outside the water extraction pipe 21. A tank cover 23 abutting against the filter cover 22 is detachably connected to the top of the filter tank 2. The specific connection method is bolt connection. The water in the pool enters the drainage chamber 13 under the negative pressure state in the drainage chamber 13. Impurities in the water follow the water and enter the water extraction pipe 21 synchronously, and then enter the filter tank 2, and are filtered through the filter cover 22 to prevent the water from leaking. The centrifugal pump 16 is blocked inside, and the centrifugal pump 16 is stopped and the water replenishment valve 112 is opened, so that the water replenishment chamber 12 replenishes the drainage chamber 13 with water, and the excess water is discharged back to the pool through the connecting pipe 14 and the pumping pipe 21. In this process, the reflux water backwashes the filter cover 22 in the filter tank 2, and simultaneously completes the removal of impurities on the filter cover 22. By utilizing the tank cover 23 and the filter tank 2 bolt connection, the filter cover 22 can be taken out of the filter tank 2, which is convenient for effectively cleaning impurities that are difficult to remove by flushing, thereby ensuring the subsequent pumping effect.
[0030] The working process and principle of the utility model are as follows:
[0031] During use of the utility model, water is injected into the water replenishment chamber 12 through the water injection pipe 19, and the water replenishment valve 112 is opened at the same time, and the water enters the drainage chamber 13 through the water replenishment pipe 111, and part of the water in the drainage chamber 13 enters the inside of the centrifugal pump 16 to meet the self-priming seal when the centrifugal pump 16 is started to absorb water for the first time, and then the water replenishment valve 112 and the water injection valve 110 are closed;
[0032] The centrifugal pump 16 is started to cooperate with the water suction pipe 15 to extract the water in the drainage chamber 13. As the amount of water in the drainage chamber 13 decreases, a negative pressure effect is formed inside the drainage chamber 13. The water in the pool is automatically pumped and replenished into the drainage chamber 13 in cooperation with the water suction pipe 21 and the connecting pipe 14 extending into the pool, so as to realize the automatic and continuous water absorption effect of the centrifugal pump 16. Impurities in the water follow the water and enter the water suction pipe 21 synchronously, and then enter the filter tank 2, and are filtered by the filter cover 22. The water in the water suction pipe 15 enters the water replenishment chamber 12, and is discharged through the drain pipe 17 after it is filled.
[0033] When the centrifugal pump 16 is shut down for maintenance, the water replenishment valve 112 is opened, and the water in the water replenishment chamber 12 is replenished through the water replenishment pipe 111 to replenish the missing water in the drainage chamber 13. After replenishment, the excess water is discharged back into the pool through the connecting pipe 14 and the pumping pipe 21. In this process, the reflux water backwashes the filter cover 22 in the filter tank 2, and simultaneously removes impurities on the filter cover 22. For impurities that are difficult to rinse and clean, the tank cover 23 is separated from the filter tank 2, and the filter cover 22 is taken out for cleaning.
[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A water pump automatic drainage device, comprising a drainage box (1), characterized in that: The drainage box (1) is fixedly connected to a partition (11) inside, and the drainage box (1) is located at the top and bottom sides of the partition (11) respectively. A connecting pipe (14) and a water suction pipe (15) are fixedly connected to the outer walls of both sides of the drainage box (1), one end of the connecting pipe (14) is connected to the drainage chamber (13), and the free end of the connecting pipe (14) is fixedly connected to a water suction pipe (21) through a filter tank (2), and the two ends of the water suction pipe (15) are respectively connected to the water replenishment chamber (12) and the drainage chamber (13), and a centrifugal pump (16) is fixedly connected to the water suction pipe (15). The top of the drainage box (1) is fixedly connected to a drainage pipe (17).
2. The automatic drainage device for a water pump according to claim 1, characterized in that: The water outlet end of the connecting pipe (14) is located above one side of the drainage chamber (13), the water inlet end of the water suction pipe (15) is located below one side of the drainage chamber (13), and a check valve (18) is fixedly provided on the water suction pipe (15).
3. The automatic drainage device for a water pump according to claim 1, characterized in that: A water injection pipe (19) communicating with the water replenishment chamber (12) is fixedly connected to the top of the drainage box (1), and a water injection valve (110) is fixedly provided on the water injection pipe (19).
4. The automatic drainage device for a water pump according to claim 1, characterized in that: A water supply pipe (111) is fixedly connected to one side of the drainage box (1), and two ends of the water supply pipe (111) are respectively connected to the water supply chamber (12) and the drainage chamber (13), the water inlet end of the water supply pipe (111) is located below one side of the water supply chamber (12), and a water supply valve (112) is fixedly provided on the water supply pipe (111).
5. The automatic drainage device for a water pump according to claim 1, characterized in that: One end of the water extraction pipe (21) is fixedly connected to the bottom of the filter tank (2), and the free end of the connecting pipe (14) is fixedly connected to the annular outer wall of the filter tank (2). A filter cover (22) is provided inside the filter tank (2) and outside the water extraction pipe (21). A tank cover (23) abutting against the filter cover (22) is detachably connected to the top of the filter tank (2).