Coal mine underground drainage device and method

Abstract

The invention discloses a coal mine underground drainage device and method, and relates to the technical field of underground drainage, the coal mine underground drainage device comprises a base, the top of the base is fixedly provided with a water pump, the water pump is provided with drainage pipes and a connecting pipe, and one side of the connecting pipe is provided with two drainage pipes communicated with the connecting pipe; branch pipes communicated with the drainage pipes are arranged at the ends, away from the connecting pipe, of the two drainage pipes, and a main pipe communicated with the two branch pipes is arranged at one ends of the two branch pipes. The filter cartridge can be conveniently drawn out and rotated, the labor intensity of workers is reduced, meanwhile, the rotary motion of the filter cartridge facilitates more comprehensive impurity cleaning, the cleaning efficiency is improved, the impurity cleaning effect can be further improved through revolution and rotation of a brush block and reciprocating motion of a brush ring, automatic intermittent spraying can be achieved, and the cleaning efficiency is improved. The brush block and the brush ring are matched, so that the cleanliness of the filter cartridge is ensured, and the cleaning efficiency is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of underground drainage, and in particular to an underground drainage device and method for a coal mine. Background Art

[0002] Drainage is a crucial link in underground coal mine operations. Drainage in coal mines can not only keep the working surface dry and prevent rocks from sinking and water from falling, but also effectively lower the groundwater level and reduce groundwater pressure, thereby shortening the distance from the mining working surface to the wellhead and reducing the energy consumption of equipment such as pumping stations and conveying systems. Therefore, the efficiency and reliability of underground coal mine drainage devices directly affect the safe production and operating efficiency of coal mines.

[0003] Existing underground drainage devices in coal mines usually use a pump in conjunction with a filter element for drainage operations. However, after long-term use, the filter element is easily attached with coal slag, resulting in a decrease in filtration efficiency. For this reason, Chinese Patent No. CN119321344A proposes an intelligent underground drainage device for coal mines, which can clean the filter element with a ring brush and a round brush and is equipped with a spray system, which can spray and rinse the filter element when it needs to be cleaned. However, when the device is used, it is difficult to remove the stubborn coal slag inside the filter element. Secondly, the filter element rotation and cleaning process of the device requires the coordinated work of multiple motors and cylinders, and the structure is complex. It also requires additional manual auxiliary spraying, which is difficult to achieve automation and reduces work efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a coal mine underground drainage device and method.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A coal mine underground drainage device and method, including a base, a water pump fixedly installed on the top of the base, a drainage pipe and a connecting pipe are arranged on the water pump, two water inlet pipes connected to the connecting pipe are arranged on one side of the connecting pipe, two water inlet pipes are arranged at one end away from the connecting pipe, branch pipes connected to the water inlet pipes are arranged, one end of the two branch pipes is provided with the same main pipe connected to the two branch pipes, one side of the two branch pipes is provided with a filter cartridge adapted to the two branch pipes, the two filter cartridges are provided with evenly distributed filter holes, one side of the two filter cartridges is provided with a water tank, a movable rotating assembly connected to the filter cartridge is arranged above the two water tanks, a cleaning assembly connected to the movable rotating assembly is arranged above the two water tanks, and a spray assembly connected to the cleaning assembly is arranged above the two water tanks.

[0006] Preferably, the movable rotating assembly includes a fixed block and a mounting block fixedly mounted on the top of the water tank, a guide rod fixedly connected between the fixed block and the mounting block, a guide block slidably sleeved on the guide rod, a mounting box fixedly mounted on the guide block, the filter cartridge passes through an outer wall of one side of the mounting box and is rotatably connected thereto, a cylinder is fixedly mounted on a side wall of the fixed block close to the mounting box, the telescopic end of the cylinder is fixedly connected to the mounting box, a motor is fixedly mounted on an inner wall of one side of the mounting box, the output shaft of the motor is fixedly connected to a first bevel gear, a fixed tube is fixedly mounted on the outer wall of one end of the filter cartridge located in the mounting box, and a third bevel gear meshing with the first bevel gear is fixedly mounted on the outer wall of the fixed tube.

[0007] Preferably, the cleaning assembly includes a reciprocating screw rod that is penetrated by the outer wall of one end of the filter cartridge near the mounting box and is rotatably connected thereto, the reciprocating screw rod penetrates the fixed tube, one end of the reciprocating screw rod is fixedly installed with a second bevel gear meshingly connected to the first bevel gear, the reciprocating screw rod is sleeved with a circulation block threadedly connected thereto, a partition is fixedly installed on the inner wall of the filter cartridge, a matching hole is provided on the partition plate, a connecting rod is fixedly installed on one side wall of the circulation block near the partition plate, one end of the connecting rod is fixedly installed with a connecting plate, a mounting shaft rotatably connected thereto is penetrated by the connecting plate, the mounting shaft penetrates the matching hole, a matching groove is provided on the outer wall of one end of the mounting shaft near the reciprocating screw rod, a matching block is fixedly installed on one end of the reciprocating screw rod, and the mounting shaft The cam is provided with a toothed plate at one end thereof, and a toothed plate is provided at the bottom end thereof, and a toothed plate is provided at the bottom end thereof, and a toothed plate is provided at the toothed plate to prevent the toothed plate from being rotatably engaged with the toothed plate.

[0008] Preferably, the spray assembly includes a spray barrel fixedly mounted on the inner wall of one end of the mounting box, a wear-resistant spray plug slidably connected to the inner wall of the spray barrel is arranged inside the spray barrel, a spring is fixedly connected between the wear-resistant spray plug and the inner wall of one end of the mounting box, two wear-resistant rods slidably connected to the outer wall of the end of the filter barrel close to the spray barrel are penetrated by the outer wall, one end of the two wear-resistant rods is abutted against one side wall of the wear-resistant spray plug, the spray barrel is provided with an inlet pipe and an outlet pipe connected to the interior thereof, the end of the inlet pipe away from the spray barrel is connected to the water tank, a spray box is arranged above the filter barrel, and the end of the outlet pipe away from the spray barrel is connected to the spray box.

[0009] Preferably, the two water inlet pipes are each provided with a first valve, the two branch pipes are each provided with a second valve, and the filter cartridge is adapted to the branch pipes.

[0010] Preferably, the matching block is a square block and is located in the matching groove, the sliding block is hemispherical, the sliding groove is spiral, and the sliding block is located in the sliding groove and is slidably connected to the sliding groove.

[0011] Preferably, one-way valves are provided in both the inlet pipe and the outlet pipe, and the ends of the inlet pipe and the outlet pipe connected to the spray barrel are both located on the side of the wear-resistant spray plug away from the wear-resistant rod.

[0012] A method for draining water in a coal mine comprises the following steps: The first step is to close the first valve on one of the water inlet pipes and the second valve on the branch pipe under normal conditions, start the water pump, and the sewage in the mine enters the branch pipe through the main pipe, and then enters the other water inlet pipe after being filtered through the filter holes, and finally is discharged from the drainage pipe through the connecting pipe by the water pump; In the second step, when the filter cartridge needs to be pulled out for cleaning, the first valve and the second valve on the water path of the filter cartridge are closed, and the first valve and the second valve on the other water path are opened. The filter cartridge is then pulled out and rotated by means of the displacement rotation component. By setting up the cleaning component, the brush ring rotates and moves left and right at the same time, and the brush block rotates while revolving, thereby cleaning the impurities in the filter cartridge. The rotating filter cartridge is sprayed and rinsed by means of the spray component.

[0013] Beneficial effects of the present invention: By setting up a displacement rotation component, the filter cartridge can be easily pulled out and rotated, making the cleaning work simpler and faster, reducing the labor intensity of workers. The rotating movement of the filter cartridge helps to more comprehensively clean the impurities attached to the filter cartridge, thereby improving the cleaning efficiency.

[0014] By setting up a cleaning component, the brush block can be made to orbit and rotate to clean the impurities in the internal filter holes while the filter cartridge rotates, and the reciprocating brush ring can further improve the cleaning effect of the impurities.

[0015] By setting up a spray assembly, the outer surface of the filter cartridge can be automatically and intermittently sprayed while the filter cartridge rotates. By cooperating with the brush block and the brush ring, the cleaning efficiency can be further improved to ensure the cleanliness of the filter cartridge.

[0016] The present invention enables the filter cartridge to be easily pulled out and rotated, thus reducing the labor intensity of workers. At the same time, the rotating motion of the filter cartridge helps to clean impurities more comprehensively, thereby improving the cleaning efficiency. The impurity cleaning effect can be further improved through the revolution and rotation of the brush block and the reciprocating motion of the brush ring. The invention can also automatically spray intermittently, cooperating with the brush block and the brush ring to ensure the cleanliness of the filter cartridge, thereby further improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of one side of a coal mine underground drainage device proposed by the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the other side of a coal mine underground drainage device proposed by the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the installation box of the present invention after being cut along one central plane; Figure 4 The present invention is attached Figure 3 A schematic diagram of the enlarged structure at A in the middle; Figure 5 The present invention is attached Figure 3 A schematic diagram of the enlarged structure at B in the middle; Figure 6 It is a schematic diagram of the three-dimensional structure of the installation box of the present invention after being cut open along another central plane.

[0018] In the figure: 1 base, 2 water pump, 3 drain pipe, 4 connecting pipe, 5 water inlet pipe, 6 first valve, 7 branch pipe, 8 second valve, 9 main pipe, 10 fixing block, 11 cylinder, 12 installation box, 13 spray box, 14 water tank, 15 guide rod, 16 inlet pipe, 17 outlet pipe, 18 filter cartridge, 19 motor, 20 first bevel gear, 21 second bevel gear, 22 third bevel gear, 23 guide block, 24 installation block, 25 connecting rod, 26 connecting plate, 27 mounting shaft, 28 matching block, 29 matching groove, 30 rotating cylinder, 31 round shaft, 32 sliding groove, 33 sliding block, 34 inner cavity, 35 partition, 36 fourth bevel gear, 37 brush block, 38 rotating shaft, 39 fifth bevel gear, 40 brush ring, 41 filter hole, 42 wear-resistant spray plug, 43 spray cylinder, 44 circulation block, 45 reciprocating screw, 46 matching hole, 47 wear-resistant rod, 48 fixed tube, 49 spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Reference Figure 1-Figure 2 A coal mine underground drainage device comprises a base 1, a water pump 2 is fixedly installed on the top of the base 1, a drainage pipe 3 and a connecting pipe 4 are arranged on the water pump 2, two water inlet pipes 5 connected thereto are arranged on one side of the connecting pipe 4, the two water inlet pipes 5 are arranged with branch pipes 7 connected to the water inlet pipes 5 at one end away from the connecting pipe 4, the two branches 7 are provided with a main pipe 9 connected to the two branches 7 at one end, filter cartridges 18 matched thereto are arranged on one side of the two branches 7, filter holes 41 evenly distributed are arranged on the two filter cartridges 18, water tanks 14 are arranged on one side of the two filter cartridges 18, first valves 6 are arranged on the two water inlet pipes 5, second valves 8 are arranged on the two branches 7, and the filter cartridges 18 are matched with the branch pipes 7.

[0021] Reference Figure 3-6 , a movable rotating assembly connected to the filter cartridge 18 is provided above the two water tanks 14, and the movable rotating assembly includes a fixed block 10 and a mounting block 24 fixedly mounted on the top of the water tank 14, a guide rod 15 is fixedly connected between the fixed block 10 and the mounting block 24, a guide block 23 is slidably sleeved on the guide rod 15, and a mounting box 12 is fixedly mounted on the guide block 23, the filter cartridge 18 passes through one side outer wall of the mounting box 12 and is rotatably connected thereto, a cylinder 11 is fixedly mounted on a side wall of the fixed block 10 close to the mounting box 12, the telescopic end of the cylinder 11 is fixedly connected to the mounting box 12, a motor 19 is fixedly mounted on one side inner wall of the mounting box 12, the output shaft of the motor 19 is fixedly connected to a first bevel gear 20, a fixed pipe 48 is fixedly mounted on the outer wall of one end of the filter cartridge 18 located in the mounting box 12, and a third bevel gear 22 meshingly connected to the first bevel gear 20 is fixedly mounted on the outer wall of the fixed pipe 48, and the filter cartridge 18 can be pulled out and rotated by moving the rotating assembly.

[0022] A cleaning assembly connected to the mobile rotating assembly is provided above the two water tanks 14. The cleaning assembly includes a reciprocating screw rod 45 which is arranged on the outer wall of one end of the filter cartridge 18 close to the mounting box 12 and is rotatably connected thereto. The reciprocating screw rod 45 passes through a fixed tube 48. A second bevel gear 21 meshingly connected to the first bevel gear 20 is fixedly installed at one end of the reciprocating screw rod 45. A circulation block 44 threadedly connected thereto is sleeved on the reciprocating screw rod 45. A partition plate 35 is fixedly installed on the inner wall of the filter cartridge 18. A matching hole 46 is provided on the partition plate 35. One side of the circulation block 44 close to the partition plate 35 A connecting rod 25 is fixedly installed on the wall, and a connecting plate 26 is fixedly installed at one end of the connecting rod 25. A mounting shaft 27 connected to the connecting plate 26 is penetrated, and the mounting shaft 27 passes through the matching hole 46. A matching groove 29 is provided on the outer wall of the end of the mounting shaft 27 close to the reciprocating screw rod 45. A matching block 28 is fixedly installed at one end of the reciprocating screw rod 45. The mounting shaft 27 is provided with an inner cavity 34 located on the side of the matching groove 29 away from the reciprocating screw rod 45. A rotating drum 30 connected to the rotating drum 30 is penetrated at the bottom end of the matching groove 29. A matching block 28 is fixed on the side wall close to the rotating drum 30. A round shaft 31 is fixedly installed in the rotating drum 30, a sliding groove 32 is opened on the outer wall of the round shaft 31, a sliding block 33 is fixedly installed on the inner wall of the rotating drum 30, a fourth bevel gear 36 located in the inner cavity 34 is fixedly installed at one end of the rotating drum 30, and a rotating shaft 38 connected to the rotating shaft 38 is provided on both sides of the outer wall of the inner cavity 34, and a fifth bevel gear 39 meshing with the fourth bevel gear 36 is fixedly installed at one end of the two rotating shafts 38 located in the inner cavity 34, and a fifth bevel gear 39 meshing with the fourth bevel gear 36 is fixedly installed at one end of the two rotating shafts 38 located outside the inner cavity 34. A brush block 37 and a brush ring 40 are fixedly installed on the outer wall of the mounting shaft 27 and are located on the side of the brush block 37 away from the partition 35. The matching block 28 is a square block and is located in the matching groove 29. Through the mutual cooperation between the matching block 28 and the matching groove 29, the mounting shaft 27 can reciprocate and rotate synchronously with the matching block 28. The sliding block 33 is hemispherical, and the sliding groove 32 is spiral. The sliding block 33 is located in the sliding groove 32 and is slidably connected to the sliding groove 32. Through the cleaning component, impurities at the filter hole 41 on the filter cartridge 18 can be automatically cleaned to improve the cleaning effect.

[0023] A spray assembly connected to the cleaning assembly is provided above the two water tanks 14. The spray assembly includes a spray barrel 43 fixedly mounted on the inner wall of one end of the installation box 12. A wear-resistant spray plug 42 slidably connected to the inner wall of the spray barrel 43 is provided inside the spray barrel 43. A spring 49 is fixedly connected between the wear-resistant spray plug 42 and the inner wall of one end of the installation box 12. Two wear-resistant rods 47 slidably connected to the outer wall of the filter cartridge 18 near the spray barrel 43 are provided through the outer wall. One end of the two wear-resistant rods 47 are against one side wall of the wear-resistant spray plug 42. There are an inlet pipe 16 and an outlet pipe 17 connected to the interior thereof, the end of the inlet pipe 16 away from the spray cylinder 43 is connected to the water tank 14, a spray box 13 is arranged above the filter cartridge 18, the end of the outlet pipe 17 away from the spray cylinder 43 is connected to the spray box 13, and a one-way valve is arranged in the inlet pipe 16 and the outlet pipe 17, and the ends of the inlet pipe 16 and the outlet pipe 17 connected to the spray cylinder 43 are both located on the side of the wear-resistant spray plug 42 away from the wear-resistant rod 47. Through the spray assembly, the rotating filter cartridge 18 can be intermittently sprayed to further improve the cleaning effect.

[0024] A method for draining water in a coal mine comprises the following steps: The first step is to close the first valve 6 on one of the water inlet pipes 5 and the second valve 8 on the branch pipe 7 under normal conditions, start the water pump 2, and the sewage in the mine enters the branch pipe 7 through the main pipe 9, and then enters the other water inlet pipe 5 after being filtered through the filter hole 41, and finally is discharged from the drainage pipe 3 through the connecting pipe 4 by the water pump 2; In the second step, when the filter cartridge 18 needs to be pulled out for cleaning, the first valve 6 and the second valve 8 on the water path of the filter cartridge 18 are closed, and the first valve 6 and the second valve 8 on the other water path are opened. Then, the filter cartridge 18 is pulled out and rotated by displacing the rotating component. By setting a cleaning component, the brush ring 40 rotates and moves left and right, and the brush block 37 rotates while revolving, thereby cleaning the impurities in the filter cartridge 18. The rotating filter cartridge 18 is sprayed and rinsed by the spray component.

[0025] In the present invention, under normal conditions, the first valve 6 on one of the water inlet pipes 5 and the second valve 8 on the branch pipe 7 are closed, the water pump 2 is started, and the sewage in the mine enters the branch pipe 7 through the main pipe 9, and then enters the other water inlet pipe 5 after being filtered through the filter hole 41, and finally is discharged from the drain pipe 3 by the water pump 2 through the connecting pipe 4. When the filter cartridge 18 needs to be drawn out and cleaned after a long period of use, the first valve 6 and the second valve 8 on the water path of the filter cartridge 18 are closed, the first valve 6 and the second valve 8 on the other water path are opened, and then the filter cartridge 18 is drawn out of the branch pipe 7 by starting the cylinder 11, and then the motor 19 is started to rotate the first bevel gear 20. Since the third bevel gear 22 is meshed and connected with the first bevel gear 20, the third bevel gear 22, the fixed pipe 48 and the filter cartridge 18 can be rotated; Because the second bevel gear 21 is also meshed with the first bevel gear 20, the reciprocating screw 45 and the matching block 28 can rotate accordingly, and the rotation direction is opposite to the rotation direction of the filter cartridge 18. Because the matching block 28 is a square block and cooperates with the matching groove 29, the installation shaft 27, the brush block 37 and the brush ring 40 can rotate accordingly. When the reciprocating screw 45 rotates, the circulation block 44 is threadedly connected to the reciprocating screw 45, and is guided by two wear-resistant rods 47 so that it does not rotate relative to the reciprocating screw 45, so that the circulation block 44 can reciprocate left and right. When the circulation block 44 reciprocates left and right, the connecting rod 25 and the connecting plate 26 are set, so that the installation shaft 27 can reciprocate left and right, so that The rotating brush block 37 and the brush ring 40 are made to reciprocate left and right accordingly, so that the impurities at the filter hole 41 on the filter cartridge 18 can be cleaned. When the mounting shaft 27 reciprocates left and right, the rotating drum 30 reciprocates left and right accordingly, while the circular shaft 31 does not reciprocate, and the sliding block 33 on the rotating drum 30 is located in the spiral sliding groove 32 on the circular shaft 31, so that the rotating drum 30 and the fourth bevel gear 36 can be reciprocated clockwise and counterclockwise, and the fifth bevel gear 39 is meshed and connected with the fourth bevel gear 36, so that the rotating shaft 38 and the brush block 37 can be reciprocated clockwise and counterclockwise around the axis of the rotating shaft 38, so that the brush block 37 revolves around the axis of the mounting shaft 27 and rotates around its own axis, so that the cleaning effect can be improved; When the circulation block 44 reciprocates left and right, one end of its wear-resistant rod 47 abuts against the wear-resistant spray plug 42, and the wear-resistant spray plug 42 is reset by setting a spring 49 (see Appendix). Figure 6 state), the spring 49 is in a compressed state), so that the wear-resistant spray plug 42 can move left and right accordingly, so that the cooling water in the water tank 14 can be reciprocatingly sucked into the spray cylinder 43 through the inlet pipe 16, and then squeezed into the spray box 13 through the outlet pipe 17 and finally sprayed from the nozzle on the spray box 13 to the rotating filter cartridge 18, thereby flushing the filter hole 41 on the filter cartridge 18, which can further improve the cleaning effect.

[0026] 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 according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coal mine underground drainage device, comprising a base (1), characterized in that: A water pump (2) is fixedly mounted on the top of the base (1); a drainage pipe (3) and a connecting pipe (4) are arranged on the water pump (2); two water inlet pipes (5) connected thereto are arranged on one side of the connecting pipe (4); a branch pipe (7) connected to the water inlet pipe (5) is arranged at one end of the two water inlet pipes (5) away from the connecting pipe (4); a main pipe (9) connected to the two branch pipes (7) is arranged at one end of the two branch pipes (7); and a main pipe (9) connected to the two branch pipes (7) is arranged on one side of the two branch pipes (7). Both are provided with filter cartridges (18) adapted thereto, both filter cartridges (18) are provided with filter holes (41) evenly distributed thereon, both filter cartridges (18) are provided with a water tank (14) on one side, both water tanks (14) are provided with a movable rotating assembly connected to the filter cartridge (18) above, both water tanks (14) are provided with a cleaning assembly connected to the movable rotating assembly above, and both water tanks (14) are provided with a spray assembly connected to the cleaning assembly above.

2. A coal mine underground drainage device according to claim 1, characterized in that: The movable rotating assembly comprises a fixed block (10) and a mounting block (24) fixedly mounted on the top of the water tank (14); a guide rod (15) is fixedly connected between the fixed block (10) and the mounting block (24); a guide block (23) is slidably sleeved on the guide rod (15); a mounting box (12) is fixedly mounted on the guide block (23); the filter cartridge (18) passes through an outer wall of one side of the mounting box (12) and is rotatably connected thereto; the fixed block (10) is disposed on a side wall of the mounting box (12) adjacent to the fixing block (10); A cylinder (11) is fixedly mounted, the telescopic end of the cylinder (11) is fixedly connected to the mounting box (12), a motor (19) is fixedly mounted on an inner wall of one side of the mounting box (12), an output shaft of the motor (19) is fixedly connected to a first bevel gear (20), a fixed tube (48) is fixedly mounted on an outer wall of one end of the filter cartridge (18) located in the mounting box (12), and a third bevel gear (22) meshingly connected to the first bevel gear (20) is fixedly mounted on an outer wall of the fixed tube (48).

3. A coal mine underground drainage device according to claim 2, characterized in that: The cleaning assembly comprises a reciprocating screw (45) which is arranged through the outer wall of one end of the filter cartridge (18) close to the mounting box (12) and is rotatably connected thereto, the reciprocating screw (45) passes through the fixing tube (48), one end of the reciprocating screw (45) is fixedly mounted with a second bevel gear (21) meshingly connected to the first bevel gear (20), the reciprocating screw (45) is sleeved with a circulation block (44) which is threadedly connected thereto, a partition (35) is fixedly mounted on the inner wall of the filter cartridge (18), a matching hole (46) is formed on the partition (35), a connecting rod (25) is fixedly mounted on one side wall of the circulation block (44) close to the partition (35), one end of the connecting rod (25) is fixedly mounted with a connecting plate (26), and a mounting shaft (27) which is rotatably connected thereto is arranged through the connecting plate (26).

4. A coal mine underground drainage device according to claim 3, characterized in that: The installation shaft (27) passes through the matching hole (46); a matching groove (29) is formed on the outer wall of one end of the installation shaft (27) close to the reciprocating screw rod (45); a matching block (28) is fixedly mounted on one end of the reciprocating screw rod (45); an inner cavity (34) is provided on the installation shaft (27) at a side of the matching groove (29) away from the reciprocating screw rod (45); a rotating cylinder (30) rotatably connected thereto is formed through the bottom end of the matching groove (29); a round shaft (31) located inside the rotating cylinder (30) is fixedly mounted on a side wall of the matching block (28) close to the rotating cylinder (30); a sliding groove (32) is formed on the outer wall of the round shaft (31); and a sliding block (33) is fixedly mounted on the inner wall of the rotating cylinder (30).

5. The underground coal mine drainage device according to claim 4, characterized in that: A fourth bevel gear (36) located in the inner cavity (34) is fixedly mounted on one end of the rotating drum (30); rotating shafts (38) rotatably connected to the rotating shafts (38) are provided through both outer walls of the inner cavity (34); fifth bevel gears (39) meshingly connected to the fourth bevel gear (36) are fixedly mounted on one end of the two rotating shafts (38) located in the inner cavity (34); a brush block (37) located on a side of the partition (35) away from the connecting plate (26) is fixedly mounted on one end of the two rotating shafts (38) located outside the inner cavity (34); and a brush ring (40) located on a side of the brush block (37) away from the partition (35) is fixedly mounted on the outer wall of the mounting shaft (27).

6. The underground coal mine drainage device according to claim 5, characterized in that: The spray assembly comprises a spray barrel (43) fixedly mounted on the inner wall of one end of the installation box (12); a wear-resistant spray plug (42) slidably connected to the inner wall of the spray barrel (43) is arranged inside the spray barrel (43); a spring (49) is fixedly connected between the wear-resistant spray plug (42) and the inner wall of one end of the installation box (12); two wear-resistant rods (47) slidably connected to the outer wall of the end of the filter barrel (18) close to the spray barrel (43) are penetrated and arranged; one end of the two wear-resistant rods (47) are respectively abutted against a side wall of the wear-resistant spray plug (42); an inlet pipe (16) and an outlet pipe (17) connected to the interior of the spray barrel (43) are arranged on the spray barrel (43); the end of the inlet pipe (16) away from the spray barrel (43) is connected to the water tank (14); a spray box (13) is arranged above the filter barrel (18); the end of the outlet pipe (17) away from the spray barrel (43) is connected to the spray box (13).

7. The underground coal mine drainage device according to claim 6, characterized in that: The two water inlet pipes (5) are each provided with a first valve (6), the two branch pipes (7) are each provided with a second valve (8), and the filter cartridge (18) is adapted to fit the branch pipes (7).

8. The underground coal mine drainage device according to claim 7, characterized in that: The matching block (28) is a square block and is located in the matching groove (29); the sliding block (33) is hemispherical; the sliding groove (32) is spiral; and the sliding block (33) is located in the sliding groove (32) and is slidably connected to the sliding groove (32).

9. The underground coal mine drainage device according to claim 8, characterized in that: Both the inlet pipe (16) and the outlet pipe (17) are provided with a one-way valve, and the ends of the inlet pipe (16) and the outlet pipe (17) connected to the spray barrel (43) are located on a side of the wear-resistant spray plug (42) away from the wear-resistant rod (47).

10. A drainage method according to the underground coal mine drainage device according to any one of claims 1 to 9, characterized in that: The following steps are involved: The first step is to close the first valve (6) on one of the water inlet pipes (5) and the second valve (8) on the branch pipe (7) under normal conditions, start the water pump (2), and the sewage from the mine enters the branch pipe (7) through the main pipe (9), and then enters the other water inlet pipe (5) after being filtered through the filter hole (41), and finally is discharged from the drainage pipe (3) by the water pump (2) through the connecting pipe (4); In the second step, when the filter cartridge (18) needs to be drawn out for cleaning, the first valve (6) and the second valve (8) on the water path of the filter cartridge (18) are closed, and the first valve (6) and the second valve (8) on another water path are opened. The filter cartridge (18) is then drawn out and rotated by means of a displacement rotation component. By setting a cleaning component, the brush ring (40) is rotated and moves left and right at the same time, and the brush block (37) is rotated while revolving, thereby cleaning impurities in the filter cartridge (18). The rotating filter cartridge (18) is sprayed and rinsed by means of a spray component.

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