Water suction pump and water suction test device

Abstract

The utility model relates to a water suction pump and a water suction test device, the water suction pump comprises a pump body, an outer pipe, an inner pipe, a first plugging part and a filtering part, the upper end of the outer pipe is fixedly connected with the inlet end of the pump body, the inner pipe is fixedly connected in the outer pipe, and the lower end of the inner pipe is used for being connected with a water inlet pipe; the outer surface of the inner pipe and the inner surface of the outer pipe form a drainage channel for draining water in the outer pipe, the first blocking part is detachably connected to the lower end of the drainage channel and used for blocking the lower end of the drainage channel, and the filtering part is arranged in the outer pipe and used for filtering water entering the pump body through the outer pipe. According to the water suction pump and the water suction test device, after water suction is stopped, the second plugging part seals the upper end pipe opening of the inner pipe, water flowing back to the designated water taking position from the inner pipe and the water inlet pipe is reduced, and water and impurities drained through the drainage channel are increased. The total amount of the impurities at the specified water taking position is reduced, the impurities entering the outer pipe from the specified water taking position are reduced during subsequent water pumping, the impurities blocking the filtering part are reduced, and the water pumping efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumping equipment, in particular to a water pump and a water pumping test device. Background Art

[0002] The pumping test device is a device used to extract water from lakes and reservoirs, including pumping equipment, water level observation tools, etc., among which the commonly used pumping equipment is a pumping pump. Before using the existing pumping pump to pump water, the inlet end of the pumping pump is connected to the outlet end of the water inlet pipe, and the inlet end of the water inlet pipe is connected to a filter cover for filtering the water entering the water inlet pipe. The inlet end of the water inlet pipe is placed in a designated water intake position in the water body, and then the pumping pump is started to pump out the water at the designated water intake position. The filter cover can reduce the impurities entering the pumping pump and reduce the possibility of damage to the pumping pump. Although the existing pumping pump can pump out water at the designated position, the existing pumping pump cannot remove impurities in the water near the designated water intake position. After each water extraction from the designated water intake position, the amount of impurities in the water near the designated water intake position will not decrease. During each pumping, more impurities may block some of the filter holes of the filter cover, which easily leads to low efficiency of each pumping. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a water pump and a water pumping test device to solve the problem that the existing water pump is unable to collect impurities in the water near the designated water intake position. After each water is pumped from the designated water intake position, the amount of impurities in the water near the designated water intake position will not decrease. During each water pumping, more impurities may clog some filter holes of the filter cover, which may easily lead to a technical problem that the efficiency of each water pumping is relatively low.

[0004] The utility model is realized by the following technical solutions:

[0005] A water pump comprises a pump body, an outer tube, an inner tube, a first blocking portion and a filter portion, wherein the upper end of the outer tube is fixedly connected to the inlet end of the pump body, the inner tube is fixedly connected inside the outer tube, the lower end of the inner tube is used to connect to a water inlet pipe, the outer surface of the inner tube and the inner surface of the outer tube form a drainage channel for the water in the outer tube to be discharged, the first blocking portion is detachably connected to the lower end of the drainage channel and is used to block the lower end of the drainage channel, and the filter portion is arranged inside the outer tube and is used to filter the water entering the pump body through the outer tube.

[0006] It is further defined that the filter portion includes a first filter screen, a second filter screen and a fixed ring, the first filter screen is cylindrical, the second filter screen is fixedly disposed at the upper end of the first filter screen and closes the upper end pipe opening of the second filter screen, the fixed ring is disposed at the lower end of the second filter screen and is fixedly connected to the second filter screen, the outer circumferential surface of the fixed ring is fixedly connected to the inner circumferential surface of the outer tube; the drainage channel is connected to the inner cavity of the first filter screen.

[0007] It is further defined that the inner tube and the outer tube are arranged coaxially; the first sealing portion comprises an elastic sealing ring and a first limiting ring, the upper end of the elastic sealing ring is located in the drainage channel, the elastic sealing ring is interference fit with the drainage channel, the first limiting ring is fixedly connected to the lower side surface of the elastic sealing ring, and the outer circumferential surface of the first limiting ring protrudes outward from the outer circumferential surface of the elastic sealing ring.

[0008] It is further defined that it also includes a second sealing part, which is arranged on the inner tube, and the second sealing part is used to close the upper end pipe opening of the inner tube after the pump body stops, and the second sealing part is also used to open the upper end pipe opening of the inner tube after the pump body starts.

[0009] It is further defined that the second sealing portion includes a sealing block and a connecting portion, the sealing block is located on the upper side of the inner tube, the size of the sealing block is larger than the size of the upper end of the inner tube so that the sealing block can close the upper end of the inner tube, and the connecting portion can be slidably arranged in the inner tube up and down, and the connecting portion is fixedly connected to the sealing block.

[0010] It is further defined that the upper surface of the blocking block is gradually inclined downward from the middle to the peripheral side.

[0011] It is further defined that the inner surface of the upper end of the inner tube protrudes inward to form a second limiting ring; the connecting part includes a sliding ring and a connecting rod, the sliding ring is slidably fitted in the inner tube, one end of the connecting rod is fixedly connected to the sliding ring, and the other end is fixedly connected to the blocking block.

[0012] The utility model also provides a water pumping test device, comprising the water pump.

[0013] The beneficial effects of the utility model are:

[0014] After using the water pump and water pumping test device described in the utility model, the impurities returning to the designated water intake position can be reduced, thereby reducing the total amount of impurities in the designated water intake position. During subsequent water pumping, the impurities entering the outer tube from the designated water intake position will be reduced, and the impurities clogging the filter part will be reduced, thereby improving the water pumping efficiency.

[0015] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is a partial cross-sectional view of the utility model;

[0018] Figure 3 It is a partial exploded view of the utility model;

[0019] Figure 4 It is a partial structural view of the utility model in the pumping state;

[0020] Figure 5 This is a partial structural view of the utility model in the drainage state.

[0021] In the figure: 1, pump body; 2, outer tube; 3, inner tube; 4, first blocking part; 41, elastic sealing ring; 42, first limiting ring; 5, filtering part; 51, first filter screen; 52, second filter screen; 53, fixing ring; 6, drainage channel; 7, second blocking part; 71, blocking block; 72, connecting part; 721, sliding ring; 722, connecting rod; 8, second limiting ring; DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0027] See also Figure 1-5 The utility model provides a technical solution: a water pump, comprising a pump body 1, an outer tube 2, an inner tube 3, a first plugging portion 4 and a filter portion 5, wherein the model of the pump body 1 is 25F-8, the upper end of the outer tube 2 is fixedly connected to the inlet end of the pump body 1, the inner tube 3 is fixedly connected inside the outer tube 2, the lower end of the inner tube 3 is used to connect to the water inlet pipe, and a drainage channel 6 for the water in the outer tube 2 to be discharged is formed between the outer surface of the inner tube 3 and the inner surface of the outer tube 2. Specifically, the space between the outer surface of the inner tube 3 and the inner surface of the outer tube 2 is the drainage channel 6. The first plugging portion 4 is detachably connected to the lower end of the drainage channel 6 and is used to plug the lower end of the drainage channel 6. The filter portion 5 is arranged in the outer tube 2 and is used to filter the water entering the pump body 1 through the outer tube 2.

[0028] The initial state of the water pump described in the utility model is: the first blocking part 4 is connected to the lower end of the drainage channel 6, the first blocking part 4 blocks the lower end of the drainage channel 6, the upper end of the outer tube 2 is fixedly connected to the inlet end of the pump body 1, and the lower end of the inner tube 3 is connected to the water inlet pipe.

[0029] Before using the water pump of the utility model to pump water, a water filling operation is performed, that is, the inlet end of the water inlet pipe is raised so that the height of the inlet end of the water inlet pipe is higher than the outlet end of the pump body 1, and then water is poured into the water inlet pipe so that the water inlet pipe, the inner tube 3, the outer tube 2 and the inner cavity of the pump body 1 are all filled with water. Then the inlet end of the water inlet pipe is blocked and placed at the designated water intake position.

[0030] When the water pump of the utility model is used to pump water, the plugging of the inlet end of the water inlet pipe is removed and the pump body 1 is started, and the water at the designated water intake position can enter the pump body 1 through the water inlet pipe, the inner pipe 3 and the outer pipe 2 in sequence, and then the water is discharged from the outlet end of the pump body 1. The filter part 5 can filter the water entering the pump body 1 through the outer pipe 2, so that the impurities in the water entering the outer pipe 2 from the designated water intake position through the water inlet pipe and the inner pipe 3 can be retained in the outer pipe 2.

[0031] After the water pump of the utility model stops pumping water, the first blocking part 4 is quickly removed from the lower end of the drainage channel 6 to release the blocking of the drainage channel 6 by the first blocking part 4. Part of the water in the water pump will flow back from the inner tube 3 and the water inlet pipe to the designated water intake position, and part of the impurities in the outer tube 2 will return to the designated water intake position along with the water flowing back from the inner tube 3 and the water inlet pipe to the designated water intake position, and part of the water in the water pump will be discharged from the drainage channel 6, and part of the impurities in the outer tube 2 will be discharged along with the water discharged from the drainage channel 6. The impurities returning to the designated water intake position can be reduced, and the total amount of impurities in the designated water intake position can be reduced. In the subsequent pumping, the impurities entering the outer tube 2 from the designated water intake position will be reduced, and the impurities blocking the filter part 5 will be reduced, and the pumping efficiency can be improved.

[0032] In this embodiment, the inner tube 3 is fixedly connected to the outer tube 2 via a connecting plate. Specifically, the connecting plate is located in the drainage channel 6, one end of the connecting plate is fixedly connected to the outer tube 2, and the other end of the connecting plate is fixedly connected to the inner tube 3. It can be understood that in other embodiments, the inner tube 3 can also be fixedly connected to the outer tube 2 via a connecting rod. Specifically, the connecting rod is located in the drainage channel 6, one end of the connecting rod is fixedly connected to the outer tube 2, and the other end of the connecting rod is fixedly connected to the inner tube 3.

[0033] In this embodiment, the filter portion 5 includes a first filter screen 51, a second filter screen 52 and a fixing ring 53. The first filter screen 51 is cylindrical. The second filter screen 52 is fixedly arranged at the upper end of the first filter screen 51 and closes the upper end pipe opening of the second filter screen 52. The fixing ring 53 is arranged at the lower end of the second filter screen 52 and is fixedly connected to the second filter screen 52. The outer peripheral surface of the fixing ring 53 is fixedly connected to the inner peripheral surface of the outer tube 2. The drainage channel 6 is connected to the inner cavity of the first filter screen 51.

[0034] When using the water pump described in the utility model to pump water, after water enters the outer tube 2, it can pass through the mesh holes of the first filter 51 and the mesh holes of the second filter 52 and then enter the pump body 1. The mesh holes of the first filter 51 and the mesh holes of the second filter 52 can both pass water, so that the water passing efficiency of the filter part 5 is higher, and the filter part 5 has less influence on the water pumping efficiency of the pump body 1.

[0035] In this embodiment, the inner tube 3 and the outer tube 2 are arranged coaxially; the first blocking portion 4 includes an elastic sealing ring 41 and a first limiting ring 42, the upper end of the elastic sealing ring 41 is located in the drainage channel 6, the elastic sealing ring 41 is interference fit with the drainage channel 6, the first limiting ring 42 is fixedly connected to the lower side surface of the elastic sealing ring 41, and the outer peripheral surface of the first limiting ring 42 protrudes outward from the outer peripheral surface of the elastic sealing ring 41.

[0036] The elastic sealing ring 41 can be made of elastic rubber. Since the elastic sealing ring 41 and the drainage channel 6 have an interference fit, the sealing ability of the elastic sealing ring 41 on the drainage channel 6 can be guaranteed, and the elastic sealing ring 41 can be expanded and fixed in the drainage channel 6, so that the elastic sealing ring 41 is not easy to slip down from the drainage channel 6.

[0037] When the water pump of the utility model is in the initial state, the elastic sealing ring 41 is located in the drainage channel 6, and the elastic sealing ring 41 and the drainage channel 6 are interference fit, so that the first plugging part 4 can seal the drainage channel 6 with this structure. The first limiting ring 42 plays a limiting role. When the lower end of the elastic sealing ring 41 moves upward to be flush with the lower end of the outer tube 2, the first limiting ring 42 can abut the lower end of the outer tube 2, so that the elastic sealing ring 41 cannot continue to move upward. When it is necessary to remove the first plugging part 4 from the lower end of the drainage channel 6, the first limiting ring 42 is moved downward, and the first limiting ring 42 pulls the elastic sealing ring 41 downward until the elastic sealing ring 41 is pulled out from the lower end of the drainage channel 6, so that the first plugging part 4 can be removed from the lower end of the drainage channel 6.

[0038] In this embodiment, a second plugging portion 7 is further included. The second plugging portion 7 is arranged on the inner tube 3. The second plugging portion 7 is used to close the upper end of the inner tube 3 after the pump body 1 stops. The second plugging portion 7 is also used to open the upper end of the inner tube 3 after the pump body 1 starts. It should be noted that the second plugging portion 7 closing the upper end of the inner tube 3 does not mean that the second plugging portion 7 completely seals the upper end of the inner tube 3. After the second plugging portion 7 closes the upper end of the inner tube 3, the air or water in the inner tube 3 can still be discharged from the upper end of the inner tube 3 at a slower speed to facilitate the water filling operation.

[0039] When the water pump of the utility model is used to pump water, the pump body 1 is in the starting state, and the second blocking part 7 opens the upper end of the inner tube 3, so that the water entering the inner tube 3 can be quickly discharged from the upper end of the inner tube 3; after the water pump of the utility model stops pumping water, the pump body 1 is in the stopping state, and the second blocking part 7 is used to close the upper end of the inner tube 3 after the pump body 1 stops, which can reduce the water flowing back from the inner tube 3 and the water inlet pipe to the designated water intake position, thereby reducing the impurities returning to the designated water intake position through the inner tube 3 and the water inlet pipe, and increasing the water discharged through the drainage channel 6, thereby increasing the impurities discharged from the drainage channel 6. The impurities returning to the water intake position can be further reduced, thereby further reducing the total amount of impurities in the designated water intake position. In the subsequent pumping, the impurities entering the outer tube 2 from the designated water intake position will be further reduced, and the impurities blocking the filter 5 will be further reduced, thereby further improving the pumping efficiency.

[0040] In this embodiment, the second blocking portion 7 includes a blocking block 71 and a connecting portion 72. The blocking block 71 is located on the upper side of the inner tube 3. The size of the blocking block 71 is larger than the size of the upper end of the inner tube 3 so that the blocking block 71 can block the upper end of the inner tube 3. The connecting portion 72 can be slidably arranged in the inner tube 3, and the connecting portion 72 is fixedly connected to the blocking block 71. It should be noted that the blocking block 71 blocks the upper end of the inner tube 3, which does not mean that the blocking block 71 completely seals the upper end of the inner tube 3. After the blocking block 71 blocks the upper end of the inner tube 3, there is still a small gap between the blocking block 71 and the upper end of the inner tube 3. The gap can allow air and water to pass through to facilitate the watering operation.

[0041] During the process of pumping water using the water pump described in the utility model, the pump body 1 is in the starting state. Under the suction force of the pump body 1, the blocking block 71 and the connecting portion 72 can move upward, and the blocking block 71 can move upward and open the pipe opening at the upper end of the inner tube 3. After the water pump described in the utility model stops pumping water, the pump body 1 is in the stopping state, the pump body 1 loses the suction force, the blocking block 71 and the connecting portion 72 can move downward under the action of gravity, and the blocking block 71 can close the pipe opening at the upper end of the inner tube 3. With this structure, the second blocking portion 7 can close the pipe opening at the upper end of the inner tube 3 after the pump body 1 stops, and the second blocking portion 7 can open the pipe opening at the upper end of the inner tube 3 after the pump body 1 starts.

[0042] In this embodiment, the upper surface of the blocking block 71 is gradually inclined downward from the middle to the peripheral side.

[0043] The upper surface of the blocking block 71 is gradually inclined downward from the middle to the circumference, so that impurities remaining on the upper surface of the blocking block 71 can be reduced during the process of water in the outer tube 2 being discharged through the drainage channel 6 .

[0044] In this embodiment, the inner surface of the upper end of the inner tube 3 protrudes inward to form a second limit ring 8; the connecting part 72 includes a sliding ring 721 and a connecting rod 722, the sliding ring 721 is slidably fitted in the inner tube 3, one end of the connecting rod 722 is fixedly connected to the sliding ring 721, and the other end is fixedly connected to the blocking block 71.

[0045] With this structure, the connecting portion 72 can be slidably arranged in the inner tube 3, and the connecting portion 72 can be fixedly connected to the blocking block 71. The second limiting ring 8 can limit the sliding ring 721, and can prevent the sliding ring 71 from slipping off the upper end of the inner tube 3.

[0046] The utility model provides another technical solution: a water pumping test device, comprising the water pump.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A water pump, characterized in that: A pump body (1), an outer tube (2), an inner tube (3), a first blocking portion (4) and a filter portion (5), wherein the upper end of the outer tube (2) is fixedly connected to the inlet end of the pump body (1), the inner tube (3) is fixedly connected inside the outer tube (2), the lower end of the inner tube (3) is used to connect to a water inlet pipe, the outer surface of the inner tube (3) and the inner surface of the outer tube (2) form a drainage channel (6) for draining water in the outer tube (2), the first blocking portion (4) is detachably connected to the lower end of the drainage channel (6) and is used to block the lower end of the drainage channel (6), and the filter portion (5) is arranged inside the outer tube (2) and is used to filter water entering the pump body (1) through the outer tube (2).

2. The water pump according to claim 1, characterized in that: The filter portion (5) comprises a first filter screen (51), a second filter screen (52) and a fixing ring (53); the first filter screen (51) is cylindrical; the second filter screen (52) is fixedly arranged at the upper end of the first filter screen (51) and closes the upper end pipe opening of the second filter screen (52); the fixing ring (53) is arranged at the lower end of the second filter screen (52) and is fixedly connected to the second filter screen (52); the outer peripheral surface of the fixing ring (53) is fixedly connected to the inner peripheral surface of the outer tube (2); and the drainage channel (6) is connected to the inner cavity of the first filter screen (51).

3. The water pump according to claim 1, characterized in that: The inner tube (3) and the outer tube (2) are arranged coaxially; the first blocking portion (4) comprises an elastic sealing ring (41) and a first limiting ring (42); the upper end of the elastic sealing ring (41) is located in the drainage channel (6); the elastic sealing ring (41) and the drainage channel (6) are interference fit; the first limiting ring (42) is fixedly connected to the lower side of the elastic sealing ring (41); the outer peripheral surface of the first limiting ring (42) protrudes outwardly from the outer peripheral surface of the elastic sealing ring (41).

4. The water pump according to claim 1, characterized in that: The pump body (1) further comprises a second plugging portion (7), wherein the second plugging portion (7) is arranged on the inner tube (3), and the second plugging portion (7) is used to close the upper end of the inner tube (3) after the pump body (1) stops, and the second plugging portion (7) is also used to open the upper end of the inner tube (3) after the pump body (1) starts.

5. The water pump according to claim 4, characterized in that: The second blocking portion (7) comprises a blocking block (71) and a connecting portion (72); the blocking block (71) is located on the upper side of the inner tube (3); the size of the blocking block (71) is larger than the size of the upper end of the inner tube (3), so that the blocking block (71) can close the upper end of the inner tube (3); the connecting portion (72) can be slidably arranged in the inner tube (3) up and down, and the connecting portion (72) is fixedly connected to the blocking block (71).

6. The water pump according to claim 5, characterized in that: The upper surface of the blocking block (71) is arranged to be gradually inclined downward from the middle to the peripheral side.

7. The water pump according to claim 5, characterized in that: The inner surface of the upper end of the inner tube (3) protrudes inward to form a second limiting ring (8); the connecting portion (72) comprises a sliding ring (721) and a connecting rod (722); the sliding ring (721) is slidably fitted in the inner tube (3); one end of the connecting rod (722) is fixedly connected to the sliding ring (721) and the other end is fixedly connected to the blocking block (71).

8. A pumping test device, characterized in that: A water pump comprising the water pump described in any one of claims 1 to 7.

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