Tunnel drainage water pump

Abstract

The application belongs to the field of water pumps, and particularly relates to a tunnel drainage water pump, which comprises a water pump body and a water outlet pipe, the top of the water pump body is provided with the water outlet pipe, one end of the water pump body is fixedly provided with a water inlet hose, one side of the water pump body is fixedly provided with a fixed block, and one end of the fixed block is fixedly provided with a connecting block. The rotating shaft drives the circular plate and the filter screen to rotate towards the direction of the water inlet hose, so that the filter screen is located in front of the water inlet hose. Then, the sliding block is loosened, the spring in the connecting block restores the elastic force and drives the sliding block to reset, the top end of the water inlet hose is covered by the connecting block and the sliding block, the water inlet hose is protected, the water inlet hose is prevented from being damaged and scratched by falling stones in the tunnel, and the filter screen prevents the stones and sundries from entering the water inlet hose and prevents the water inlet hose from being blocked.

Description

Technical Field

[0001] The invention belongs to the technical field of water pumps, in particular to a tunnel drainage water pump. Background Art

[0002] A water pump is a device that has one suction nozzle and one exhaust nozzle, and can continuously form a vacuum at the inlet or a slight positive pressure at the exhaust nozzle. When constructing a tunnel, a water pump is often needed to discharge the accumulated water in the tunnel.

[0003] A Chinese patent, publication number CN108895032A, discloses a water pump. Key technical features include a power mechanism for rotating an impeller, which, when engaged with the first step, closes and connects the first opening to the second opening. The first and second housings are rotatably connected, allowing for easy assembly and disassembly of the two housings and convenient access to the internal structures for maintenance and cleaning.

[0004] When existing water pumps are used to drain water in tunnels, gravel often falls into the tunnel. Since the water pumps need to be connected to a hose to pump water, and most water pumps do not have a device to protect the hose, the falling gravel can easily damage and scratch the hose, causing the hose to be unable to be used normally.

[0005] Therefore, the present invention provides a tunnel drainage pump. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a tunnel drainage pump described in the present invention comprises a water pump body and a water outlet pipe, the top of the water pump body is provided with a water outlet pipe, and one end of the water pump body is fixedly installed with a water inlet hose; one side of the water pump body is fixedly installed with a fixed block, one end of the fixed block is fixedly installed with a connecting block, the interior of the connecting block is slidably connected with a sliding block, the inner wall of the connecting block is fixedly installed with a spring, the other end of the spring is fixedly connected to the sliding block, one end of the sliding block is rotatably connected with a rotating shaft, a circular plate is fixedly installed on the surface of the rotating shaft, and a filter screen is fixedly installed on one side of the circular plate; when the existing water pump is used for drainage in the tunnel, gravel often falls in the tunnel, because the water pump needs to be connected to a hose to pump water, and most of the pumps The water pump does not have a device to protect the hose, which makes it easy for fallen gravel to damage and scratch the hose, making the hose unable to be used normally. When the present invention is working, before the water inlet hose is used, the sliding block in the connecting block is first slid, and the sliding block is allowed to slide with the rotating shaft, circular plate and filter screen in the direction away from the water pump body. At this time, the rotating shaft is rotated again, so that the rotating shaft brings the circular plate and filter screen to the direction of the water inlet hose, so that the filter screen is directly in front of the water inlet hose, and then the sliding block is loosened, so that the spring in the connecting block recovers the elastic force and resets the sliding block, so that the connecting block and the sliding block cover the top end of the water inlet hose, thereby protecting the water inlet hose and reducing the occurrence of the water inlet hose being damaged and scratched by gravel falling in the tunnel. At the same time, the filter screen serves to block gravel and debris from entering the water inlet hose, preventing the water inlet hose from being blocked.

[0008] Preferably, a clamping block is fixedly installed on one side of the filter screen, a rubber gasket is fixedly installed on the side wall of the clamping block, and a clamping groove is opened at one end of the water inlet hose; during operation, when the spring brings the circular plate and the filter screen to reset through the sliding block, the clamping block and the rubber gasket on one side of the filter screen will move together due to the elastic force of the spring, and then be stuck in the clamping groove of the water inlet hose, thereby realizing rapid fixation of the filter screen and the water inlet hose.

[0009] Preferably, the inner wall of the connecting block is provided with a groove, and the side wall of the sliding block is fixedly installed with a pressure plate, and one side of the pressure plate is provided with a through groove running through itself, and the pressure plate is located in the groove of the connecting block, and a hollow elastic block is fixedly installed in the groove of the connecting block, and a shrinkage hole is provided on the surface of the hollow elastic block, and a blowing channel is provided inside the connecting block, and the blowing channel is communicated with the groove of the connecting block, and a breathable waterproof cloth is fixedly installed on the inner wall of the blowing channel; during operation, when the sliding block is not in use, the sliding block is released, so that the spring brings the sliding block to slide back into the connecting block, and at this time, the sliding block brings the pressure plate to squeeze the hollow elastic block in the connecting block groove, so that the gas in the hollow elastic block is blown out, and then flows into the blowing channel through the through groove of the pressure plate, and then blows out to the rotating shaft and circular plate through the blowing channel, thereby cleaning the rotating shaft and circular plate, reducing the adhesion of sand and gravel to the rotating shaft and circular plate, and affecting the normal use of the rotating shaft and circular plate in the later stage.

[0010] Preferably, the pressure plate is arc-shaped, and arc-shaped side plates are fixedly installed on both sides of the pressure plate; when working, the pressure plate is arc-shaped, so it can better match when squeezing the hollow elastic block, and the side plates will block the hollow elastic block from deforming to the surroundings, thereby making it easier for the arc-shaped pressure plate to squeeze the hollow elastic block, so that the gas in the hollow elastic block can be blown out more quickly.

[0011] Preferably, a bellows is fixed on one side of the pressure plate, and the other end of the bellows is fixedly installed on the blowing channel; during operation, when the gas in the hollow elastic block is blown out, it will be transmitted to the blowing channel through the bellows. The bellows reduces gas loss and facilitates the delivery of gas to the blowing channel.

[0012] Preferably, a hollow protective cover is fixedly installed inside the filter, and a motor is installed inside the protective cover. The output end of the motor is fixedly connected to an output rod, and a cleaning plate is fixedly installed at one end of the output rod, and an impact block and a brush are fixedly installed on one side of the cleaning plate; during operation, after the water inlet hose is used up, the motor in the protective cover is started to rotate the output rod with the output end of the motor, and the cleaning plate at one end of the output rod will rotate with the output rod. At this time, the impact block at one end of the cleaning plate will continuously strike and impact the filter, causing the filter to vibrate, thereby loosening and shaking off the dust and impurities on the filter, making it convenient for the subsequent brush to clean the filter and knock off the impurities in the filter mesh holes, thereby cleaning the filter and preventing the filter from being blocked.

[0013] Preferably, the side wall of the impact block is arc-shaped, and a sphere is rotatably connected to the arc-shaped side wall of the impact block; when working, the impact block is arc-shaped in order to better cooperate with the filter screen, so that the impact block can move while continuously impacting the filter screen, and both the arc-shaped impact block and the sphere play a role in guiding the impact block, making it easier for the impact block to move.

[0014] Preferably, a hollow elastic ring is fixedly installed on the inner wall of the circular plate, and one end of the cleaning plate is rotatably connected to a roller; when working, the cleaning plate will rotate with the roller, and the roller will continuously squeeze the hollow elastic ring, thereby squeezing out the gas in the hollow elastic ring. The gas will continuously blow air towards the filter to clean it, so that the dust and impurities cleaned by the impact block and the brush are blown away, thereby achieving a better cleaning effect.

[0015] Preferably, inclined guide plates are fixedly installed on both sides of the protective cover, and the side walls of the guide plates are provided with guide holes running through the side walls of the guide plates. During operation, when water flows through the protective cover, it will be guided away by the inclined guide plates on both sides of the protective cover, so that the water flow can continue to flow, reducing the obstruction of the protective cover to the water flow, and the inclined guide plates have a better guiding effect, and the guide plates are provided with guide holes, thereby achieving a better circulation effect.

[0016] Preferably, a sealing gasket is fixedly installed on one side of the protective cover, and the sealing gasket is in contact with the surface of the output rod; during operation, by installing the sealing gasket on one side of the protective cover, the sealing gasket is in contact with the surface of the output rod, thereby preventing water from flowing into the protective cover through the gap between the protective cover and the output rod, thereby affecting the normal use of the motor, and playing a role in waterproofing and protecting the motor.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention provides a tunnel drainage pump. Before the water inlet hose is used, the sliding block in the connecting block is first slid, and the sliding block is allowed to slide with the rotating shaft, the circular plate and the filter screen in the direction away from the water pump body. At this time, the rotating shaft is rotated again, so that the rotating shaft brings the circular plate and the filter screen to the direction of the water inlet hose, so that the filter screen is directly in front of the water inlet hose. Then the sliding block is loosened, so that the spring in the connecting block recovers the elastic force and resets the sliding block, so that the connecting block and the sliding block cover the top end of the water inlet hose, thereby protecting the water inlet hose and reducing the occurrence of the water inlet hose being damaged and scratched by gravel falling in the tunnel. At this time, the filter screen serves to block gravel and debris from entering the water inlet hose, preventing the water inlet hose from being blocked.

[0019] 2. The present invention provides a tunnel drainage pump. When the water inlet hose is used up, the motor in the protective cover is started to rotate the output end of the motor with the output rod, and the cleaning plate at one end of the output rod will rotate with the output rod. At this time, the impact block at one end of the cleaning plate will continuously hit the filter screen, causing the filter screen to vibrate, thereby loosening and shaking off the dust and impurities on the filter screen, making it convenient for the subsequent brush to clean the filter screen and knock out the impurities in the filter screen holes, thereby cleaning the filter screen and preventing the filter screen from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0023] Figure 2 It is a partial structural schematic diagram of the water inlet hose of the present invention;

[0024] Figure 3 This invention Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 This invention Figure 2 Enlarged view of point B in the middle;

[0026] Figure 5 This invention Figure 2 Enlarged view of point C in the middle;

[0027] Figure 6 This invention Figure 2 Enlarged view of point D in the middle;

[0028] Figure 7 This is a schematic diagram of the partial structure of the filter screen in the second embodiment of the present invention;

[0029] In the figure: 1. water pump body; 2. water outlet pipe; 3. water inlet hose; 4. fixing block; 5. connecting block; 6. sliding block; 7. spring; 8. rotating shaft; 9. circular plate; 10. filter screen; 11. clamping block; 12. gasket; 13. clamping slot; 14. hollow elastic block; 15. pressure plate; 16. side plate; 17. through slot; 18. blowing channel; 19. bellows; 20. breathable waterproof cloth; 21. protective cover; 22. motor; 23. output rod; 24. cleaning plate; 25. impact block; 26. brush; 27. sphere; 28. guide plate; 29. ​​diversion hole; 30. sealing gasket; 31. hollow elastic ring; 32. roller. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example 1:

[0032] See also Figures 1-4 As shown, a tunnel drainage pump described in an embodiment of the present invention includes a pump body 1 and a water outlet pipe 2, the top of the pump body 1 is provided with a water outlet pipe 2, and one end of the pump body 1 is fixedly installed with a water inlet hose 3; a fixed block 4 is fixedly installed on one side of the pump body 1, and a connecting block 5 is fixedly installed on one end of the fixing block 4, and a sliding block 6 is slidably connected to the inside of the connecting block 5, and a spring 7 is fixedly installed on the inner wall of the connecting block 5, and the other end of the spring 7 is fixedly connected to the sliding block 6, and one end of the sliding block 6 is rotatably connected to a rotating shaft 8, and a circular plate 9 is fixedly installed on the surface of the rotating shaft 8, and a filter screen 10 is fixedly installed on one side of the circular plate 9; when the existing water pump is used for drainage in the tunnel, gravel will often fall into the tunnel. Since the water pump needs to be connected to a hose to pump water, and most water pumps do not have a device to protect the hose. When the water inlet hose 3 is in operation, the sliding block 6 in the connecting block 5 is first slid, and the sliding block 6 is allowed to slide with the rotating shaft 8, the circular plate 9 and the filter screen 10 in the direction away from the water pump body 1. At this time, the rotating shaft 8 is rotated again, so that the rotating shaft 8 brings the circular plate 9 and the filter screen 10 to the direction of the water inlet hose 3, so that the filter screen 10 is in front of the water inlet hose 3, and then the sliding block 6 is loosened, so that the spring 7 in the connecting block 5 recovers the elastic force and brings the sliding block 6 back to the original position, so that the connecting block 5 and the sliding block 6 cover the top of the water inlet hose 3, thereby protecting the water inlet hose 3 and reducing the damage and scratching of the water inlet hose 3 by the gravel falling in the tunnel. At the same time, the filter screen 10 plays a role in blocking gravel and debris from entering the water inlet hose 3, preventing the water inlet hose 3 from being blocked.

[0033] A clamping block 11 is fixedly installed on one side of the filter screen 10, and a rubber gasket 12 is fixedly installed on the side wall of the clamping block 11. A clamping groove 13 is provided at one end of the water inlet hose 3. During operation, when the spring 7 brings the circular plate 9 and the filter screen 10 back to their original position through the sliding block 6, the clamping block 11 and the rubber gasket 12 on one side of the filter screen 10 will move together due to the elastic force of the spring 7, and then be clamped into the clamping groove 13 of the water inlet hose 3, thereby realizing rapid fixation of the filter screen 10 and the water inlet hose 3.

[0034] The inner wall of the connecting block 5 is provided with a groove, and a pressure plate 15 is fixedly installed on the side wall of the sliding block 6. A through groove 17 is provided on one side of the pressure plate 15, and the pressure plate 15 is located in the groove of the connecting block 5. A hollow elastic block 14 is fixedly installed in the groove of the connecting block 5. The surface of the hollow elastic block 14 has shrinkage holes. An air blowing channel 18 is provided inside the connecting block 5. The air blowing channel 18 is communicated with the groove of the connecting block 5, and a breathable waterproof cloth 20 is fixedly installed on the inner wall of the air blowing channel 18. When working, When the sliding block 6 is not in use, the sliding block 6 is released, so that the spring 7 brings the sliding block 6 to slide back into the connecting block 5. At this time, the sliding block 6 brings the pressure plate 15 to squeeze the hollow elastic block 14 in the groove of the connecting block 5, so that the gas in the hollow elastic block 14 is blown out, and then flows into the blowing channel 18 through the through groove 17 of the pressure plate 15, and then blows out to the rotating shaft 8 and the circular plate 9 through the blowing channel 18, thereby cleaning the rotating shaft 8 and the circular plate 9 and reducing the adhesion of sand and gravel to the rotating shaft 8 and the circular plate 9, which affects the normal use of the rotating shaft 8 and the circular plate 9 in the later stage.

[0035] The pressure plate 15 is arc-shaped, and arc-shaped side plates 16 are fixedly installed on both sides of the pressure plate 15. During operation, the pressure plate 15 is arc-shaped, so it can better match when squeezing the hollow elastic block 14, and the side plates 16 will block the hollow elastic block 14 from deforming to the surroundings, thereby making it easier for the arc-shaped pressure plate 15 to squeeze the hollow elastic block 14, so that the gas in the hollow elastic block 14 can be blown out more quickly.

[0036] A bellows 19 is fixed to one side of the pressure plate 15, and the other end of the bellows 19 is fixedly installed to the blowing channel 18; during operation, when the gas in the hollow elastic block 14 is blown out, it will be transmitted to the blowing channel 18 through the bellows 19. The bellows 19 plays a role in reducing gas loss and facilitating the delivery of gas to the blowing channel 18.

[0037] like Figures 2-6As shown, a hollow protective cover 21 is fixedly installed inside the filter 10, and a motor 22 is installed inside the protective cover 21. The output end of the motor 22 is fixedly connected to the output rod 23, and one end of the output rod 23 is fixedly installed with a cleaning plate 24, and one side of the cleaning plate 24 is fixedly installed with an impact block 25 and a brush 26; during operation, when the water inlet hose 3 is used up, the motor 22 in the protective cover 21 is started, so that the output end of the motor 22 drives the output rod 23 to rotate, and the cleaning plate 24 at one end of the output rod 23 rotates with the output rod 23. At this time, the impact block 25 at one end of the cleaning plate 24 will continuously knock and hit the filter 10, causing the filter 10 to vibrate, thereby loosening and shaking off the dust and impurities on the filter 10, making it convenient for the subsequent brush 26 to clean the filter 10 and knock off the impurities in the holes of the filter 10, thereby cleaning the filter 10 and preventing the filter 10 from being blocked.

[0038] The side wall of the impact block 25 is arc-shaped, and a sphere 27 is rotatably connected to the arc-shaped side wall of the impact block 25; when working, the impact block 25 is arc-shaped in order to better cooperate with the filter screen 10, so that the impact block 25 can move while continuously impacting the filter screen 10, and the arc-shaped impact block 25 and the sphere 27 both play a role in guiding the impact block 25, making it easier for the impact block 25 to move.

[0039] A hollow elastic ring 31 is fixedly installed on the inner wall of the circular plate 9, and one end of the cleaning plate 24 is rotatably connected to a roller 32; when working, when the cleaning plate 24 rotates, it will rotate with the roller 32, so that the roller 32 continuously squeezes the hollow elastic ring 31, and then squeezes out the gas in the hollow elastic ring 31. The gas will continuously blow air towards the filter 10 for cleaning, so that the dust and impurities cleaned by the impact block 25 and the brush 26 are blown away, achieving a better cleaning effect.

[0040] The protective cover 21 is fixedly provided with inclined guide plates 28 on both sides, and the side walls of the guide plates 28 are provided with guide holes 29 running through the guide plates 28. During operation, when water flows through the protective cover 21, it will be guided away by the inclined guide plates 28 on both sides of the protective cover 21, so that the water flow can continue to flow, reducing the obstruction of the protective cover 21 to the water flow, and the inclined guide plates play a better guiding role, and the guide plates are provided with guide holes 29, thereby achieving a better circulation effect.

[0041] Example 2:

[0042] like Figure 7 As shown in Comparative Example 1, another embodiment of the present invention is:

[0043] A sealing gasket 30 is fixedly installed on one side of the protective cover 21, and the sealing gasket 30 is in contact with the surface of the output rod 23. During operation, by installing the sealing gasket 30 on one side of the protective cover 21, the sealing gasket 30 is in contact with the surface of the output rod 23, thereby preventing water from flowing into the protective cover 21 through the gap between the protective cover 21 and the output rod 23, thereby preventing water from affecting the normal use of the motor 22, thereby playing a role in waterproofing and protecting the motor 22.

[0044] Working principle: Before the water inlet hose 3 is used, first slide the sliding block 6 in the connecting block 5, and let the sliding block 6 slide with the rotating shaft 8, circular plate 9 and filter 10 in the direction away from the water pump body 1. At this time, rotate the rotating shaft 8 again, so that the rotating shaft 8, circular plate 9 and filter 10 are turned to the direction of the water inlet hose 3, so that the filter 10 is directly in front of the water inlet hose 3, and then release the sliding block 6, so that the spring 7 in the connecting block 5 recovers the elastic force and resets the sliding block 6, so that the connecting block 5 and the sliding block 6 cover the top of the water inlet hose 3. Thereby, it plays the role of protecting the water inlet hose 3 and reducing the possibility of the water inlet hose 3 being damaged or scratched by the gravel falling in the tunnel. At this time, the filter screen 10 plays the role of blocking the gravel and debris from entering the water inlet hose 3 and preventing the water inlet hose 3 from being blocked. When the spring 7 resets the circular plate 9 and the filter screen 10 through the sliding block 6, the block 11 and the rubber gasket 12 on one side of the filter screen 10 will move together due to the elastic force of the spring 7, and then be stuck in the slot 13 of the water inlet hose 3, thereby realizing the rapid fixation of the filter screen 10 and the water inlet hose 3. When the sliding block 6 is not in use, the sliding block 6 is released, so that the spring 7 brings the sliding block 6 to slide back into the connecting block 5. At this time, the sliding block 6 brings the pressure plate 15 to squeeze the hollow elastic block 14 in the groove of the connecting block 5, so that the gas in the hollow elastic block 14 is blown out, and then flows into the blowing channel 18 through the through groove 17 of the pressure plate 15, and then blows out to the rotating shaft 8 and the circular plate 9 through the blowing channel 18, thereby cleaning the rotating shaft 8 and the circular plate 9 and reducing the adhesion of sand and gravel to the rotating shaft 8 and the circular plate 9, which affects the normal use of the rotating shaft 8 and the circular plate 9 in the later stage. Since the pressure plate 15 is arc-shaped, it can better match when squeezing the hollow elastic block 14, and the side plate 16 will block the hollow elastic block 14 from deforming in all directions, thereby making it easier for the arc-shaped pressure plate 15 to squeeze the hollow elastic block 14, so that the gas in the hollow elastic block 14 can be blown out more quickly. After the gas in the hollow elastic block 14 is blown out, it will be transmitted to the blowing channel 18 through the bellows 19. The bellows 19 plays a role in reducing gas loss and facilitating the delivery of gas to the blowing channel 18.When the water inlet hose 3 is used up, the motor 22 in the protective cover 21 is started, so that the output end of the motor 22 rotates with the output rod 23, and the cleaning plate 24 at one end of the output rod 23 rotates with the output rod 23. At this time, the impact block 25 at one end of the cleaning plate 24 will continuously knock and impact the filter 10, causing the filter 10 to vibrate, thereby loosening and shaking off the dust and impurities on the filter 10, making it convenient for the subsequent brush 26 to clean the filter 10 and knock off the impurities in the holes of the filter 10, thereby cleaning the filter 10 and preventing the filter 10 from being blocked. The arc-shaped impact block 25 is to better cooperate with the filter 10, so that the impact block 25 can move while continuously impacting the filter 10, and the arc-shaped impact block 25 can also be used to clean the filter 10. 5 and the sphere 27 both play a role in guiding the impact block 25, making it easier for the impact block 25 to move. When the cleaning plate 24 rotates, it will rotate with the roller 32, so that the roller 32 continuously squeezes the hollow elastic ring 31, and then squeezes out the gas in the hollow elastic ring 31. The gas will continuously blow air to clean the filter 10, so that the dust and impurities cleaned by the impact block 25 and the brush 26 are blown away, achieving a better cleaning effect. When the water flow passes through the protective cover 21, it will be guided away by the inclined guide plates 28 on both sides of the protective cover 21, so that the water flow can continue to flow, reducing the obstruction of the protective cover 21 to the water flow, and the inclined guide plates play a better diversion role, and the guide plates are provided with diversion holes 29, thereby achieving a better circulation effect.

[0045] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel drainage pump, comprising a pump body (1) and a water outlet pipe (2), wherein the top of the pump body (1) is provided with a water outlet pipe (2), and one end of the pump body (1) is fixedly mounted with a water inlet hose (3); characterized in that: A fixed block (4) is fixedly mounted on one side of the water pump body (1), a connecting block (5) is fixedly mounted on one end of the fixed block (4), a sliding block (6) is slidably connected to the interior of the connecting block (5), a spring (7) is fixedly mounted on the inner wall of the connecting block (5), the other end of the spring (7) is fixedly connected to the sliding block (6), one end of the sliding block (6) is rotatably connected to a rotating shaft (8), a circular plate (9) is fixedly mounted on the surface of the rotating shaft (8), and a filter screen (10) is fixedly mounted on one side of the circular plate (9); A clamping block (11) is fixedly mounted on one side of the filter screen (10), a rubber gasket (12) is fixedly mounted on the side wall of the clamping block (11), and a clamping slot (13) is provided at one end of the water inlet hose (3); The inner wall of the connecting block (5) is provided with a groove, and a pressure plate (15) is fixedly installed on the side wall of the sliding block (6). A through groove (17) is provided on one side of the pressure plate (15) and passes through the pressure plate (15). The pressure plate (15) is located in the groove of the connecting block (5). A hollow elastic block (14) is fixedly installed in the groove of the connecting block (5). A shrinkage hole is provided on the surface of the hollow elastic block (14). An air blowing channel (18) is provided inside the connecting block (5). The air blowing channel (18) is communicated with the groove of the connecting block (5). A breathable waterproof cloth (20) is fixedly installed on the inner wall of the air blowing channel (18). The pressing plate (15) is arc-shaped, and arc-shaped side plates (16) are fixedly mounted on both sides of the pressing plate (15); A bellows (19) is fixed to one side of the pressing plate (15), and the other end of the bellows (19) is fixedly mounted to the blowing channel (18).

2. The tunnel drainage pump according to claim 1, characterized in that: A hollow protective cover (21) is fixedly mounted inside the filter screen (10), a motor (22) is mounted inside the protective cover (21), an output end of the motor (22) is fixedly connected to an output rod (23), a cleaning plate (24) is fixedly mounted on one end of the output rod (23), and an impact block (25) and a brush (26) are fixedly mounted on one side of the cleaning plate (24).

3. The tunnel drainage pump according to claim 2, characterized in that: The side wall of the impact block (25) is arc-shaped, and a sphere (27) is rotatably connected to the arc-shaped side wall of the impact block (25).

4. The tunnel drainage pump according to claim 3, characterized in that: A hollow elastic ring (31) is fixedly mounted on the inner wall of the circular plate (9), and one end of the cleaning plate (24) is rotatably connected to a roller (32).

5. The tunnel drainage pump according to claim 4, characterized in that: Inclined guide plates (28) are fixedly mounted on both sides of the protective cover (21), and a guide hole (29) penetrating the side wall of the guide plate (28) is provided.

6. The tunnel drainage pump according to claim 5, characterized in that: A sealing gasket (30) is fixedly mounted on one side of the protective cover (21), and the sealing gasket (30) is in contact with the surface of the output rod (23).

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