Automatic recovery device for leaked sewage of plunger pump

Abstract

The utility model provides an automatic plunger pump leakage sewage recovery device, which relates to the technical field of plunger pump leakage sewage recovery, and comprises a water collection tank, a collection cover with a built-in plunger pump, a water collection pipe connected with a water outlet of the collection cover, and a water inlet pipe connected with a liquid inlet of the plunger pump. A sealing plate controls an external pipe in a first cavity to be sealed and a return pipe to be opened, and a water collecting pipe in a second cavity to be sealed and an air inlet pipe to be opened, so that under the extraction action of a plunger pump, liquid in a water collecting tank enters the plunger pump through the first cavity and the water inlet pipe along the return pipe, and the liquid in the water collecting tank is discharged along with the reduction of the water level. And outside air enters the water collecting tank through the second cavity and the connecting pipe along the air inlet pipe, so that negative pressure cannot be formed in the collecting cover when water in the water collecting tank is treated.

Description

Technical Field

[0001] The utility model relates to the technical field of recycling sewage leakage from a plunger pump, in particular to an automatic recycling device for sewage leakage from a plunger pump. Background Art

[0002] The plunger pump relies on the reciprocating motion of the plunger in the cylinder to change the volume of the sealed working chamber to achieve liquid suction and pressure. However, in actual use, the presence of some dirt, sand and other substances in the liquid will cause the seal or moving part of the plunger pump to wear, causing the plunger pump to leak.

[0003] Therefore, the automatic recovery device for leaking sewage from a plunger pump in the prior art has a notice number of CN220185343U. When the plunger pump body is running, the leaked liquid is collected by the collection cover and transported to the water collecting tank through the water collecting pipe for storage. When the liquid level sensor monitors that the liquid level inside the water collecting tank exceeds the set value, the electric valve is closed. At this time, the suction force of the plunger pump body on the water supply pipeline directly opens the check valve, allowing the water collecting tank to supply water to the plunger pump body, and the recovered liquid stored in the water collecting tank is output through the outlet pipeline. When the liquid level sensor detects that the water level reaches the lower limit, it controls the electric valve to open, thus completing a wastewater recovery.

[0004] However, when the plunger pump draws water from the water collecting tank, negative pressure will be formed on the inner wall of the water collecting tank because the water is being pumped out. The negative pressure will spread to the water collecting pipe and the collecting cover, causing negative pressure to be formed in the collecting cover. The negative pressure in the collecting cover will suck the water in the plunger pump into the collecting cover along the leaking gap, causing the gap at the leaking gap of the plunger pump to increase, which will increase the leakage of the plunger pump. Utility Model Content

[0005] The utility model aims to solve the problems existing in the prior art and proposes an automatic recovery device for leaking sewage from a plunger pump.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an automatic recovery device for leaked sewage from a plunger pump, comprising a water collecting tank, a collecting cover with a built-in plunger pump, a water collecting pipe connected to the drainage port of the collecting cover and a water inlet pipe connected to the liquid inlet of the plunger pump, one end of the water collecting pipe and the water inlet pipe are connected to a connecting cover, a first chamber connected to the water inlet pipe and a second chamber connected to the water collecting pipe are arranged in the connecting cover, a return pipe connected to the drainage port of the water collecting tank and an external pipe connected to the water collecting pipe are arranged on one side of the first chamber, a cavity wall of the second chamber located on one side of the water collecting pipe is connected to the air inlet pipe, and a cavity wall of the other side of the second chamber is connected to the connecting pipe connected to the liquid inlet of the water collecting tank, the cavity walls of the first chamber and the second chamber are both slidably connected to sealing plates, the sealing plate in the first chamber is used to control the opening and closing of the external pipe and the return pipe, and the sealing plate in the second chamber is used to control the opening and closing of the water collecting pipe and the air inlet pipe.

[0007] Preferably, a rack is fixedly connected to one side of the sealing plate, and the bottoms of the first chamber and the second chamber are rotatably connected to spur gears meshing with the rack, and a driving mechanism for driving the two spur gears to rotate is provided in the connecting cover.

[0008] Preferably, the driving mechanism includes a connecting shaft extending through the first chamber and the second chamber, and a transmission bevel gear fixed on the end face of the spur gear, and the connecting shaft is fixedly connected to the driving bevel gear in the first chamber and the second chamber, and the driving bevel gear in the first chamber is meshed with the transmission bevel gear in the first chamber.

[0009] Preferably, a rotating shaft is rotatably connected to the bottom of the second chamber, and matching bevel gears are fixedly connected to both ends of the rotating shaft, one of the matching bevel gears is meshingly connected to the driving bevel gear in the second chamber, and the other matching bevel gear is meshingly connected to the transmission bevel gear in the second chamber.

[0010] Preferably, the sealing plate is plugged into the side wall of the connecting cover.

[0011] Preferably, one end of the connecting shaft passes through the connecting cover and extends outward.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] In the utility model, a connecting cover, a water collecting pipe, a return pipe, a sealing plate, an air inlet pipe and an external pipe are arranged. The sealing plate controls the closing of the external pipe in the first chamber and the opening of the return pipe, and the closing of the water collecting pipe in the second chamber and the opening of the air inlet pipe. Under the pumping action of the plunger pump, the liquid in the water collecting tank passes through the first chamber and the water inlet pipe and enters the plunger pump. As the water level in the water collecting tank decreases, the outside air passes through the second chamber and the connecting pipe and enters the water collecting tank. This ensures that when the water in the water collecting tank is processed, no negative pressure is formed in the collecting cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the automatic recovery device for leaking sewage from a plunger pump proposed in the utility model;

[0015] Figure 2 The utility model proposes an automatic recovery device for leaking sewage from a plunger pump Figure 1 Schematic diagram of the structure viewed from above;

[0016] Figure 3 The utility model proposes an automatic recovery device for leaking sewage from a plunger pump Figure 1 A schematic cross-sectional structure diagram of ;

[0017] Figure 4 is a schematic diagram of the cross-sectional structure of the connection cover;

[0018] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0019] Legend: 1. Water collecting tank; 2. Collecting cover; 3. Second chamber; 4. Water inlet pipe; 5. Water collecting pipe; 6. External pipe; 7. Air inlet pipe; 8. Connecting cover; 9. Return pipe; 10. Connecting pipe; 11. Sealing plate; 12. Rack; 13. Connecting shaft; 14. Driving bevel gear; 15. Matching bevel gear; 16. Rotating shaft; 17. Transmission bevel gear; 18. Spur gear; 19. First chamber. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] like Figure 1-5 As shown, the automatic recovery device for leaked sewage from a plunger pump comprises a water collecting tank 1, a collecting cover 2 with a built-in plunger pump, a water collecting pipe 5 connected to the drainage port of the collecting cover 2 and a water inlet pipe 4 connected to the liquid inlet of the plunger pump, one end of the water collecting pipe 5 and the water inlet pipe 4 are connected to a connecting cover 8, a first chamber 19 connected to the water inlet pipe 4 and a second chamber 3 connected to the water collecting pipe 5 are arranged in the connecting cover 8, a cavity wall on one side of the first cavity 19 is provided with a return pipe 9 connected to the drainage port of the water collecting tank 1 and an external pipe 6 for connecting liquid, a cavity wall on one side of the second cavity 3 located on the water collecting pipe 5 is connected to an air inlet pipe 7, a cavity wall on the other side of the second cavity 3 is connected to a connecting pipe 10 connected to the liquid inlet of the water collecting tank 1, a sealing plate 11 is slidably connected to the cavity walls of the first cavity 19 and the second cavity 3, the sealing plate 11 in the first cavity 19 is used to control the opening and closing of the external pipe 6 and the return pipe 9, and the sealing plate 11 in the second cavity 3 is used to control the opening and closing of the water collecting pipe 5 and the air inlet pipe 7.

[0023] In this scheme: when the sewage leaked by the plunger pump installed in the collection cover 2 is recovered, the sealing plate 11 in the first chamber 19 is moved to close the return pipe 9 and open the external pipe 6, and the external pipe 6 is placed in the liquid to be extracted, and the sealing plate 11 in the second chamber 3 is moved to close the air inlet pipe 7 and open the water collecting pipe 5, so that under the extraction action of the plunger pump, the liquid passes through the first chamber 19 and the water inlet pipe 4 along the external pipe 6, and enters the plunger pump, and the water leaked from the plunger pump enters the second chamber 3 along the water collecting pipe 5, and then enters the water collecting tank 1 along the connecting pipe 10;

[0024] When the water level in the water collecting tank 1 is too high, the sealing plate 11 in the first chamber 19 moves to close the external pipe 6 and open the return pipe 9, while the sealing plate 11 in the second chamber 3 moves to close the water collecting pipe 5 and open the air inlet pipe 7, so that under the pumping action of the plunger pump, the liquid in the water collecting tank 1 passes through the return pipe 9 through the first chamber 19 and the water inlet pipe 4 and enters the plunger pump. As the water level in the water collecting tank 1 drops, the outside air enters the water collecting tank 1 along the air inlet pipe 7 through the second chamber 3 and the connecting pipe 10.

[0025] A rack 12 is fixedly connected to one side of the sealing plate 11, and the bottoms of the first chamber 19 and the second chamber 3 are rotatably connected to spur gears 18 meshing with the rack 12, and a driving mechanism for driving the two spur gears 18 to rotate is provided in the connecting cover 8. Specifically, the rack 12 is driven to move by the rotation of the spur gear 18, so that the sealing plate 11 moves in the first chamber 19 or the second chamber 3 as the rack 12 moves.

[0026] The driving mechanism includes a connecting shaft 13 extending through the first chamber 19 and the second chamber 3, and a transmission bevel gear 17 fixed on the end face of the spur gear 18. The connecting shaft 13 is fixedly connected with a driving bevel gear 14 located in the first chamber 19 and the second chamber 3, and the driving bevel gear 14 located in the first chamber 19 is meshed and connected with the transmission bevel gear 17 in the first chamber 19. Specifically: the two driving bevel gears 14 on the connecting shaft 13 rotate by rotating, and then the driving bevel gear 14 in the first chamber 19 drives the transmission bevel gear 17 in the first chamber 19 to rotate, that is, the spur gear 18 in the first chamber 19 rotates.

[0027] The bottom of the second chamber 3 is rotatably connected to a rotating shaft 16, and both ends of the rotating shaft 16 are fixedly connected to matching bevel gears 15, one of the matching bevel gears 15 is meshingly connected with the driving bevel gear 14 in the second chamber 3, and the other matching bevel gear 15 is meshingly connected with the transmission bevel gear 17 in the second chamber 3. Specifically: when the connecting shaft 13 drives the driving bevel gear 14 in the second chamber 3 to rotate, it will drive the matching bevel gear 15 at one end of the rotating shaft 16 to rotate, and then when the rotating shaft 16 drives the matching bevel gear 15 at the other end to rotate, it will drive the transmission bevel gear 17 in the second chamber 3 to rotate, and then the spur gear 18 in the second chamber 3 rotates, so that the corresponding rack 12 moves, and the closing plate 11 moves.

[0028] The sealing plate 11 is plugged into the side wall of the connecting cover 8 .

[0029] One end of the connecting shaft 13 passes through the connecting cover 8 and extends outward. Specifically, by installing a motor on the outer wall of the connecting cover 8 and driving the connecting shaft 13 to rotate by the motor, automatic control can be achieved.

[0030] Working principle, such as Figure 4 As shown, the return pipe 9 in the first chamber 19 is closed and the external pipe 6 is opened, the air inlet pipe 7 in the second chamber 3 is closed and the water collecting pipe 5 is opened, and the external pipe 6 is placed in the liquid to be extracted, so that the liquid enters the plunger pump along the external pipe 6 through the first chamber 19 and the water inlet pipe 4, and the water leaking from the plunger pump enters the second chamber 3 along the water collecting pipe 5, and then enters the water collecting tank 1 along the connecting pipe 10;

[0031] When the liquid in the water collecting tank 1 is processed, the motor drives the connecting shaft 13 to rotate, so that the two driving bevel gears 14 rotate, and the driving bevel gear 14 in the first chamber 19 drives the transmission bevel gear 17 in the first chamber 19 to rotate, that is, the spur gear 18 in the first chamber 19 rotates, and then the rack 12 in the first chamber 19 drives the sealing plate 11 to move, and the driving bevel gear 14 in the second chamber 3 rotates to drive the matching bevel gear 15 at one end of the rotating shaft 16 to rotate, so that the rotating shaft 16 drives the matching bevel gear 15 at the other end to drive the second chamber 3. 3 rotates, thereby realizing the rotation of the spur gear 18 in the second chamber 3, realizing the movement of the corresponding rack 12, and realizing the movement of the sealing plate 11, so that the return pipe 9 in the first chamber 19 is closed and the external pipe 6 is opened, the air inlet pipe 7 in the second chamber 3 is closed, and the water collecting pipe 5 is opened. Under the extraction action of the plunger pump, the liquid enters the plunger pump along the external pipe 6 through the first chamber 19 and the water inlet pipe 4, and the water leaking from the plunger pump enters the second chamber 3 along the water collecting pipe 5, and then enters the water collecting tank 1 along the connecting pipe 10.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An automatic recovery device for leaked sewage from a plunger pump, comprising a water collecting tank (1), a collecting hood (2) with a built-in plunger pump, a water collecting pipe (5) connected to a drainage outlet of the collecting hood (2), and a water inlet pipe (4) connected to a liquid inlet of the plunger pump, characterized in that: One end of the water collecting pipe (5) and the water inlet pipe (4) are connected to a connecting cover (8), and a first chamber (19) connected to the water inlet pipe (4) and a second chamber (3) connected to the water collecting pipe (5) are arranged in the connecting cover (8); a return pipe (9) connected to the discharge port of the water collecting tank (1) and an external pipe (6) for connecting liquid are arranged on a cavity wall on one side of the water collecting pipe (5); and a return pipe (9) connected to the discharge port of the water collecting tank (1) and an external pipe (6) for connecting liquid are arranged on a cavity wall on one side of the water collecting pipe (5). The second chamber (3) is connected to an air inlet pipe (7), the other side wall of the second chamber (3) is connected to a connecting pipe (10) connected to the liquid inlet of the water collecting tank (1), the first chamber (19) and the second chamber (3) are both slidably connected to a sealing plate (11), the sealing plate (11) in the first chamber (19) is used to control the opening and closing of the external pipe (6) and the return pipe (9), and the sealing plate (11) in the second chamber (3) is used to control the opening and closing of the water collecting pipe (5) and the air inlet pipe (7).

2. The automatic recovery device for leaked sewage from a plunger pump according to claim 1 is characterized by: A rack (12) is fixedly connected to one side of the sealing plate (11), and the bottoms of the first chamber (19) and the second chamber (3) are both rotatably connected to spur gears (18) meshing with the rack (12), and a driving mechanism for driving the two spur gears (18) to rotate is provided in the connecting cover (8).

3. The automatic recovery device for leaked sewage from a plunger pump according to claim 2 is characterized by: The driving mechanism comprises a connecting shaft (13) extending through the first chamber (19) and the second chamber (3), and a transmission bevel gear (17) fixed to the end surface of a spur gear (18); a driving bevel gear (14) is fixedly connected to the connecting shaft (13) in both the first chamber (19) and the second chamber (3); and the driving bevel gear (14) in the first chamber (19) is meshedly connected to the transmission bevel gear (17) in the first chamber (19).

4. The automatic recovery device for leaked sewage from a plunger pump according to claim 3 is characterized by: The bottom of the second chamber (3) is rotatably connected to a rotating shaft (16), and both ends of the rotating shaft (16) are fixedly connected to matching bevel gears (15), one matching bevel gear (15) is meshingly connected to a driving bevel gear (14) in the second chamber (3), and the other matching bevel gear (15) is meshingly connected to a transmission bevel gear (17) in the second chamber (3).

5. The automatic recovery device for leaked sewage from a plunger pump according to claim 1 is characterized by: The sealing plate (11) is plugged into the side wall of the connecting cover (8).

6. The automatic recovery device for leaked sewage from a plunger pump according to claim 3 is characterized by: One end of the connecting shaft (13) passes through the connecting cover (8) and extends outward.

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