Anti-blocking filtering device of coal mine underground drainage pump

Abstract

The utility model discloses a coal mine underground drainage pump anti-blocking filtering device, which relates to the field of drainage pump filtering devices and comprises a drainage pump main body, a waterproof cover is fixedly mounted on the outer wall of the drainage pump main body, and a driving component is fixedly mounted on the outer wall of the drainage pump main body and in the waterproof cover. The driving assembly is composed of a waterproof motor, a speed reducer and a gear, an output shaft of the waterproof motor is fixedly connected with an input shaft of the speed reducer, the gear is fixedly connected with an output shaft of the speed reducer, a connecting assembly is fixedly installed at the lower end of the drainage pump body, and a rotary filtering cover is rotationally installed on the connecting assembly. The driving assembly and the connecting assembly are arranged on the draining pump body, the rotary filtering cover is arranged on the connecting assembly, and meanwhile the rotary filtering cover is connected with the driving assembly, so that continuous rotation of the rotary filtering cover is achieved, and impurities such as pulverized coal and rock debris are effectively prevented from being accumulated and blocked on the surface of the rotary filtering cover; the driving assembly is protected through the waterproof cover, and it is ensured that the driving assembly stably operates in the underground humid environment.

Description

Technical Field

[0001] This utility model relates to the field of drainage pump filtration devices, and in particular to an anti-clogging filtration device for underground drainage pumps in coal mines. Background Technology

[0002] In the underground coal mine environment, drainage pumps, as critical drainage equipment, have long faced severe challenges posed by complex water quality. Solid impurities such as coal dust, rock cuttings, and debris from underground support materials generated during coal seam mining continuously mix into the drainage system. These impurities have a wide particle size distribution, ranging from micron-sized coal dust to centimeter-sized gravel, causing traditional fixed filtration devices to exhibit significant shortcomings in actual operation. The static filtration structures commonly used in existing technologies often suffer from gradual clogging of the filter screen pores by fine particles, while larger particles rapidly accumulate on the filter screen surface, forming a filter cake layer. This dual clogging mechanism leads to an exponential increase in filtration resistance, causing not only a decrease in pump head and an increase in energy consumption, but also, more seriously, triggering a chain reaction of failures such as pump cavitation and bearing overheating. Furthermore, the confined space and harsh environment underground make the maintenance of traditional filtration devices extremely difficult, requiring a long downtime for each cleaning, severely impacting mine safety and production efficiency. Therefore, developing a new type of filtration device with self-cleaning capabilities has become a critical issue urgently needing to be addressed in the field of underground drainage technology. Utility Model Content

[0003] The main purpose of this utility model is to provide an anti-clogging filter device for underground drainage pumps in coal mines, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A coal mine underground drainage pump anti-clogging filter device includes a drainage pump body. A waterproof cover is fixedly installed on the outer wall of the drainage pump body. A drive assembly is fixedly installed on the outer wall of the drainage pump body and inside the waterproof cover. The drive assembly consists of a waterproof motor, a reducer, and gears. The output shaft of the waterproof motor is fixedly connected to the input shaft of the reducer, and the gears are fixedly connected to the output shaft of the reducer. A connecting assembly is fixedly installed at the lower end of the drainage pump body. A rotating filter cover is rotatably installed on the connecting assembly. The rotating filter cover consists of a gear ring, a connecting base plate, and L-shaped stops. The connecting base plate is located below the gear ring. Several L-shaped stops are fixedly installed in a ring on the gear ring and the connecting base plate. The gear ring meshes with the gears.

[0006] Preferably, three support legs are fixedly installed in a ring on the lower outer wall of the main body of the drainage pump.

[0007] Preferably, the waterproof cover is fixedly installed on the lower outer wall of the drainage pump body, and a shaft hole is provided on the lower wall of the waterproof cover.

[0008] Preferably, the reducer and waterproof motor on the drive assembly are fixedly connected to the outer wall of the drainage pump body. The reducer and waterproof motor are both located inside the waterproof cover. The output shaft of the reducer passes downward through the shaft hole, and the gear is located below the waterproof cover.

[0009] Preferably, the connecting assembly consists of a connecting ring and an anti-detachment ring, the anti-detachment ring being fixedly installed at the lower end of the connecting ring, and the connecting ring being fixedly installed at the lower end of the drain pump body.

[0010] Preferably, the rotating filter cover is located between the three support legs, the toothed ring has an annular anti-detachment groove inside, the upper end of the toothed ring has an annular connecting groove, and the annular connecting groove and the annular anti-detachment groove are interconnected. The toothed ring is rotatably mounted on the connecting ring and the anti-detachment ring through the annular connecting groove and the annular anti-detachment groove. The L-shaped stop bar is fixedly connected to the lower end of the toothed ring and the outer wall of the connecting base plate, respectively.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] By installing a drive assembly and a connecting assembly on the main body of the drainage pump, and setting a rotating filter cover on the connecting assembly, while connecting the rotating filter cover to the drive assembly, continuous rotation of the rotating filter cover is achieved, effectively preventing impurities such as coal dust and rock chips from accumulating and clogging the surface of the rotating filter cover. A waterproof cover protects the drive assembly, ensuring its stable operation in the humid underground environment. The anti-detachment design of the rotating filter cover and the connecting assembly ensures the safety of the rotating filter cover during rotation, reduces maintenance frequency, improves drainage efficiency, and extends the service life of the drainage pump main body. Attached Figure Description

[0013] Figure 1 This is a top view of the overall structure of this utility model;

[0014] Figure 2 This is a bottom view of the overall structure of this utility model;

[0015] Figure 3 This is a schematic diagram showing the positional relationship between the main body of the drainage pump, the waterproof cover, and the connecting components of this utility model.

[0016] Figure 4 This is a schematic diagram showing the positional relationship between the drive assembly and the rotating filter cover of this utility model.

[0017] Figure 5 This is a schematic diagram showing the positional relationship between the rotated filter cover and the connecting components after being cut apart according to this utility model.

[0018] In the diagram: 1. Drain pump body; 2. Waterproof cover; 3. Drive assembly; 4. Connecting assembly; 5. Rotary filter cover; 6. Support leg; 7. Shaft hole; 8. Reducer; 9. Gear; 10. Connecting ring; 11. Anti-detachment ring; 12. Gear ring; 13. Annular connecting groove; 14. Annular anti-detachment groove; 15. Connecting base plate; 16. L-shaped stop bar; 17. Waterproof motor. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please see Figure 1 - Figure 5 As shown, a coal mine underground drainage pump anti-clogging filter device includes a drainage pump body 1. A waterproof cover 2 is fixedly installed on the outer wall of the drainage pump body 1. A drive assembly 3 is fixedly installed on the outer wall of the drainage pump body 1 and inside the waterproof cover 2. The drive assembly 3 consists of a waterproof motor 17, a reducer 8, and a gear 9. The output shaft of the waterproof motor 17 is fixedly connected to the input shaft of the reducer 8, and the gear 9 is fixedly connected to the output shaft of the reducer 8. A connecting assembly 4 is fixedly installed at the lower end of the drainage pump body 1. A rotating filter cover 5 is rotatably installed on the connecting assembly 4. The rotating filter cover 5 consists of a gear ring 12, a connecting base plate 15, and an L-shaped stop bar 16. The connecting base plate 15 is located below the gear ring 12. Several L-shaped stop bars 16 are fixedly installed in a ring on the gear ring 12 and the connecting base plate 15. The gear ring 12 meshes with the gear 9. Three support legs 6 are fixedly installed in a ring on the lower outer wall of the drainage pump body 1. During installation, the drainage pump body 1 is first fixed to the underground drainage point to ensure that the three support legs 6 provide stable support. The connecting assembly 4 is fixed to the lower end of the drain pump body 1 via the connecting ring 10. The rotating filter cover 5 is engaged with the connecting ring 10 and the anti-detachment ring 11 via the annular connecting groove 13 and the annular anti-detachment groove 14 of the gear ring 12, so as to achieve rotatable installation. The gear 9 of the drive assembly 3 needs to be precisely meshed with the gear ring 12. Before starting, check the sealing of the waterproof cover 2 to ensure that the reducer 8 and the waterproof motor 17 are in a dry environment. When in use, turn on the drain pump body 1 and the waterproof motor 17. The rotating filter cover 5 rotates slowly under the drive of the gear 9. The L-shaped baffle 16 guides the impurities in the water to the outside of the rotating filter cover 5 to prevent clogging.

[0021] Specifically, the waterproof cover 2 is fixedly installed on the lower outer wall of the drainage pump body 1. A shaft hole 7 is opened on the lower wall of the waterproof cover 2. The reducer 8 and waterproof motor 17 on the drive assembly 3 are fixedly connected to the outer wall of the drainage pump body 1. The reducer 8 and waterproof motor 17 are both located inside the waterproof cover 2. The output shaft of the reducer 8 passes downward through the shaft hole 7. The gear 9 is located below the waterproof cover 2. The power supply of the waterproof motor 17 must use an explosion-proof cable for underground coal mines, connected to the mine's low-voltage power supply system, and equipped with an overload protection device. The power line is introduced through the sealed interface of the waterproof cover 2 to ensure that the connection point is completely waterproof. A frequency converter is configured to adjust the motor speed to adapt to different impurity concentrations. If the underground power supply is unstable, a backup battery pack can be added to ensure that the waterproof motor 17 can continue to run and complete the current drainage cycle in the event of a sudden power outage. A waterproof component can be installed inside the shaft hole 7 to prevent water from entering the waterproof cover 2.

[0022] Specifically, the connecting assembly 4 consists of a connecting ring 10 and an anti-detachment ring 11. The anti-detachment ring 11 is fixedly installed at the lower end of the connecting ring 10, and the connecting ring 10 is fixedly installed at the lower end of the drain pump body 1. The rotating filter cover 5 is located between the three support legs 6. The toothed ring 12 has an annular anti-detachment groove 14 inside, and an annular connecting groove 13 is opened at the upper end of the toothed ring 12. The annular connecting groove 13 and the annular anti-detachment groove 14 are interconnected. The toothed ring 12 is rotatably installed on the connecting ring 10 and the anti-detachment ring 11 through the annular connecting groove 13 and the annular anti-detachment groove 14. The L-shaped stop bar 16 is connected to the lower end of the toothed ring 12 and the connecting base plate, respectively. The outer wall of the filter shroud 15 is fixedly connected. The rotation speed of the rotating filter shroud 5 is adjusted to 5-15 revolutions per minute by the reducer 8 (the specific speed is adjusted according to the water quality). If the speed is too low, impurities may not be completely removed. If the speed is too high, eddies will be generated, which will affect the pumping efficiency of the main body of the drainage pump 1. The power of the waterproof motor 17 is selected from 0.5-1.5kW and must be matched with the reducer 8 to ensure that the output torque is sufficient to overcome the rotational resistance of the rotating filter shroud 5. The machine should be stopped regularly to check the meshing wear of the gear ring 12 and the gear 9. At the same time, food-grade grease should be added to the annular connecting groove 13. If the L-shaped stop bar 16 is deformed or broken, it should be replaced in time.

[0023] Ultimately, by installing a drive assembly 3 and a connecting assembly 4 on the main body 1 of the drainage pump, and by installing a rotating filter cover 5 on the connecting assembly 4, and connecting the rotating filter cover 5 to the drive assembly 3, the continuous rotation of the rotating filter cover 5 is achieved, effectively preventing impurities such as coal dust and rock chips from accumulating and clogging on the surface of the rotating filter cover 5; the waterproof cover 2 protects the drive assembly 3, ensuring its stable operation in the humid underground environment; the anti-detachment design of the rotating filter cover 5 and the connecting assembly 4 ensures the safety of the rotating filter cover 5 during rotation, reduces the maintenance frequency, improves drainage efficiency, and extends the service life of the main body 1 of the drainage pump.

[0024] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A coal mine underground drainage pump anti-blocking filter device, comprising a drainage pump body (1), characterized in that: The outer wall of the drainage pump body (1) is fixedly installed with a waterproof cover (2), the outer wall of the drainage pump body (1) and in the waterproof cover (2) is fixedly installed with a driving assembly (3), the driving assembly (3) is composed of a waterproof motor (17), a speed reducer (8) and a gear (9), the output shaft of the waterproof motor (17) is fixedly connected with the input shaft of the speed reducer (8), the gear (9) is fixedly connected with the output shaft of the speed reducer (8), the lower end of the drainage pump body (1) is fixedly installed with a connecting assembly (4), the connecting assembly (4) is rotatably installed with a rotating filter cover (5), the rotating filter cover (5) is composed of a gear ring (12), a connecting base plate (15) and an L-shaped blocking rod (16), the connecting base plate (15) is located below the gear ring (12), the L-shaped blocking rod (16) is annularly fixedly installed on the gear ring (12) and the connecting base plate (15), and the gear ring (12) is engaged with the gear (9).

2. The anti-blocking filter device for coal mine underground drainage pump according to claim 1, characterized in that: Three supporting legs (6) are annularly fixedly installed on the lower side outer wall of the drainage pump body (1).

3. The anti-blocking filter device for coal mine underground drainage pump according to claim 2, characterized in that: The waterproof cover (2) is fixedly installed on the lower side outer wall of the drainage pump body (1), and an axle hole (7) is formed in the lower side wall of the waterproof cover (2).

4. The anti-blocking filter device for coal mine underground drainage pump according to claim 3, characterized in that: The speed reducer (8), the waterproof motor (17) and the outer wall of the drainage pump body (1) are fixedly connected on the driving assembly (3), the speed reducer (8) and the waterproof motor (17) are located in the waterproof cover (2), the output shaft of the speed reducer (8) penetrates downward through the axle hole (7), and the gear (9) is located below the waterproof cover (2).

5. The anti-blocking filter device for coal mine underground drainage pump according to claim 4, characterized in that: The connecting assembly (4) is composed of a connecting ring (10) and an anti-disengagement ring (11), the anti-disengagement ring (11) is fixedly installed at the lower end of the connecting ring (10), and the connecting ring (10) is fixedly installed at the lower end of the drainage pump body (1).

6. The anti-blocking filter device for coal mine underground drainage pump according to claim 5, characterized in that: The rotating filter cover (5) is located between the three supporting legs (6), the inner portion of the gear ring (12) is formed with an annular anti-disengagement groove (14), the upper end of the gear ring (12) is formed with an annular connecting groove (13), the annular connecting groove (13) and the annular anti-disengagement groove (14) are in communication, the gear ring (12) is rotatably installed on the connecting ring (10) and the anti-disengagement ring (11) through the annular connecting groove (13) and the annular anti-disengagement groove (14), and the L-shaped blocking rod (16) is fixedly connected with the lower end of the gear ring (12) and the outer wall of the connecting base plate (15).

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