Water inlet structure of underground water pump of coal mine

Abstract

The utility model discloses a coal mine underground water pump water inlet structure, which belongs to the technical field of coal mine mechanical equipment and comprises a water storage tank, a driving component is slidably connected to the inner wall of the water storage tank and comprises a clamping fixing block, and the clamping fixing block is in threaded connection with a connecting pipe. The end, away from the clamping fixing block, of the connecting pipe is connected with a telescopic pipe, a water outlet pipe is fixed to the end, away from the connecting pipe, of the telescopic pipe and fixed to the top of the water storage tank, the driving assembly can drive the connecting pipe to move up and down, and the upper end of the water storage tank is covered with a cover plate. According to the structure, the position of the connecting pipe can be adjusted, so that water pumped by the connecting pipe is always located in upper-layer liquid in the water storage tank, the number of peat briquette mixed materials entering the water pump in the water pumping process can be greatly reduced, and the water pump can be prevented from being blocked.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine mechanical equipment, in particular to a water inlet structure of a water pump in a coal mine. Background Art

[0002] The main drainage pump in coal mines is generally installed in the pump room. A special water storage tank and suction well are built. The water pump draws water from the suction well and discharges it to the ground. Due to the underground water gushing during coal mining, mixed with a large amount of coal slime, the suction faucet of the water pump is easily blocked or even buried, which makes it unable to work normally.

[0003] In view of this situation, the mine needs to organize manual cleaning frequently and dig the water suction faucet out of the silt to ensure the normal drainage of the water pump. The patent with the announcement number CN216241538U discloses an anti-blocking device for the water suction faucet of the main drainage pump. When draining, the water flow drives the two sets of water retaining wheels to rotate and then controls the rotation of the two sets of transmission discs. During the rotation of the transmission disc, the cleaning ring is driven by the transmission rod to reciprocate on the outer cylindrical surface of the filter cylinder. The outer cylindrical surface of the filter cylinder is cleaned by the first cleaning brush, and the rod diameter of the end of the filter barrel is cleaned by the second cleaning brush to prevent the filter cylinder and the main drainage pump from being blocked. However, the above device can only clean the outer wall of the side wall of the filter cylinder, and cannot effectively clean the impurities deposited on the inner wall of the side wall of the filter cylinder. In addition, when the above-mentioned installation structure encounters silt, its water wheel will be blocked and will not rotate. Therefore, the inventor designs an improvement that can directly reduce the amount of impurities entering the water pump and avoid using a smaller water faucet. Utility Model Content

[0004] The purpose of the utility model is to provide a water inlet structure for a water pump in a coal mine. The position of the connecting pipe arranged in the structure can be adjusted, so that the water drawn by the connecting pipe is always in the upper liquid layer inside the water tank. Therefore, the amount of peat block mixture entering the water pump during the pumping process can be greatly reduced, and blockage of the water pump can be avoided.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water inlet structure for an underground water pump in a coal mine, which comprises a water storage tank, a driving assembly is slidably connected to the inner wall of the water storage tank, the driving assembly comprises a clamping and fixing block, the clamping and fixing block is screwed with a connecting pipe, the connecting pipe is connected to an end of a telescopic pipe away from the clamping and fixing block, an end of the telescopic pipe away from the connecting pipe is fixed with an outlet pipe, the outlet pipe is fixed to the top of the water storage tank, the driving assembly can drive the connecting pipe to move up and down, and the upper end of the water storage tank is covered with a cover plate.

[0006] Furthermore, a groove opened on the top of the water tank is provided at one end of the cover plate, an inverted trapezoidal cover is fixed inside the groove, screws rotatably connected to the inside of the water tank are provided at both ends of the inverted trapezoidal cover, one end of each screw extends out of the water tank, a first servo motor is fixed to the extended end, and an extrusion port is provided on the side of the water tank corresponding to the screw away from the extended end.

[0007] Furthermore, the inverted trapezoidal cover is provided with water leakage holes all around, and each corner thereof is provided with a rounded corner.

[0008] In the above scheme, the height of the extrusion port is lower than the position of the water leakage hole around the inverted trapezoidal cover, and the size of the extrusion port is larger than the size of the screw.

[0009] Furthermore, the cover plate is provided with a through hole for the water outlet pipe to extend out.

[0010] Furthermore, the driving assembly also includes a slide rail fixed on the inner wall of the water tank, the slide rail is slidably connected to the clamping and fixing block, the clamping and fixing block is internally threaded with a lead screw, both ends of the lead screw are rotatably connected to the slide rail, one end of the lead screw extends out, and a second servo motor is fixed to the extended end, and also includes a photoelectric liquid level sensing switch screwed to the bottom of the clamping and fixing block, and the photoelectric liquid level sensing switch is electrically connected to the second servo motor.

[0011] Furthermore, guide rods fixed to the inner wall of the water tank are provided on both sides of the slide rail, and the clamping and fixing blocks are slidably connected to the guide rods.

[0012] The beneficial effects of the utility model are:

[0013] 1. An inverted trapezoidal cover is set at the upper end of the water tank. When water flows into the water tank, it is first filtered and the filter blocks are discharged between the inverted trapezoidal cover and the groove. The filter blocks and other impurities can be quickly cleaned by screw extrusion, which is convenient for water to enter the water tank and facilitate the subsequent extraction of well water.

[0014] 2. A movable and adjustable connecting pipe is provided. When the photoelectric liquid level sensing switch contacts the liquid surface, the second servo motor stops working to maintain the position of the connecting pipe, so that the water drawn by the connecting pipe is always in the upper layer of liquid inside the water tank. Therefore, the amount of peat block mixture entering the water pump during the pumping process can be greatly reduced, and blockage of the water pump can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a water inlet structure of a coal mine underground water pump provided by the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of a water storage tank of a water inlet structure of a coal mine underground water pump provided by the utility model;

[0017] Figure 3The utility model provides a water inlet structure for a coal mine underground water pump. Figure 2 The enlarged schematic diagram at I in the middle;

[0018] Figure 4 The utility model provides a water inlet structure for a coal mine underground water pump. Figure 2 Enlarged schematic diagram of point II in the middle.

[0019] In the figure: 1. water storage tank; 2. clamping block; 3. connecting pipe; 4. telescopic pipe; 5. water outlet pipe; 6. cover plate; 7. groove; 8. inverted trapezoidal cover; 9. screw; 10. first servo motor; 11. leaking hole; 12. through hole; 13. slide rail; 14. lead screw; 15. second servo motor; 16. photoelectric liquid level sensor switch; 17. guide rod; 18. extrusion outlet. DETAILED DESCRIPTION

[0020] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0021] Please also refer to Figures 1 to 4 The water inlet structure of the underground water pump in the coal mine of the utility model will be described in detail below with reference to the accompanying drawings.

[0022] like Figure 1 As shown, the water inlet structure of the underground water pump in the coal mine includes a water tank 1, and a driving component is slidably connected to the inner wall of the water tank 1. The driving component includes a clamping and fixing block 2, and the clamping and fixing block 2 is screwed with a connecting pipe 3. The end of the connecting pipe 3 away from the clamping and fixing block 2 is connected to a telescopic pipe 4, and the end of the telescopic pipe 4 away from the connecting pipe 3 is fixed with a water outlet pipe 5, and the water outlet pipe 5 is fixed on the top of the water tank 1. The driving component can drive the connecting pipe 3 to move up and down, and the upper end of the water tank 1 is covered with a cover plate 6.

[0023] In this embodiment, the water storage tank 1 is placed inside the coal mine water well for collecting groundwater, and a water pump is connected and installed at the above-mentioned water outlet pipe 5 to discharge the water inside the water storage tank 1.

[0024] Furthermore, in this embodiment, the position of the connecting tube 3 is adjusted by moving the position of the clamping and fixing block 2, while ensuring that the bottom of the connecting tube 3 is 5 cm below the liquid surface.

[0025] The water entering the water storage tank 1 is filtered through the inverted trapezoidal cover 8 provided on the cover plate 6 to prevent large peat blocks from entering the water storage tank 1. A groove 7 opened on the top of the water storage tank 1 is provided at one end of the cover plate 6. An inverted trapezoidal cover 8 is fixed inside the groove 7. Screws 9 rotatably connected to the inside of the water storage tank 1 are provided at both ends of the inverted trapezoidal cover 8. One end of each screw 9 extends out of the water storage tank 1. A first servo motor 10 is fixed to the extended end. A side of the water storage tank 1 corresponding to the screw 9 is provided with an extrusion port 18 away from the extended end, so as to When water enters the water tank 1, since there are leakage holes 11 evenly distributed around the inverted trapezoidal cover 8 and rounded corners are set at each corner, the water flow carrying the peat blocks directly hits the top of the inverted trapezoidal cover 8, and the water leaks out into the water tank 1 along the water holes. The peat blocks slide to the bottom along the four sides of the inverted trapezoidal cover 8, and then after the first servo motor 10 is turned on, the first servo motor 10 drives the screw 9 to rotate, and the peat blocks deposited at the bottom are squeezed out along the extrusion port 18 to avoid clogging of the leakage holes 11 on the entire inverted trapezoidal cover 8.

[0026] When water is stored in the water storage tank 1, an external water pump is connected through the water outlet pipe 5 to pump out the internal water. A through hole 12 is provided on the cover plate 6 for the water outlet pipe 5 to extend out.

[0027] At the same time, the position of the internal connecting pipe 3 is adjustable, and the position of the connecting pipe 3 can be changed according to the position of the liquid level inside the water tank 1, so that the connecting pipe 3 is always maintained at a position 5 cm below the liquid level, and the connecting pipe 3 is driven by a driving component. Specifically, the driving component includes a clamping and fixing block 2, and also includes a slide rail 13 fixed on the inner wall of the water tank 1, and the slide rail 13 is internally slidably connected to the clamping and fixing block 2, and the clamping and fixing block 2 is internally threaded with a lead screw 14, and both ends of the lead screw 14 are rotatably connected to the slide rail 13, one end of the lead screw 14 extends out, and a second servo motor 15 is fixed to the extended end, and also includes a photoelectric liquid level sensing switch 16 fixed to the bottom of the clamping and fixing block 2 by screws, and the photoelectric liquid level sensing switch 16 is electrically connected to the second servo motor 15, and the distance between the photoelectric liquid level sensing switch 16 and the end face of the connecting pipe 3 is 5 cm. According to the principle of the photoelectric liquid level sensing switch 16, when the above-mentioned photoelectric liquid level sensing switch 16 does not contact the liquid surface, the photoelectric liquid level sensing switch 16 inside The light emitted by the light emitting diode is directly reflected from the lens back to the receiver. When it contacts the liquid surface, the light emitted by the light emitting diode is refracted by the water, and the amount of light received by the receiver is reduced. Then, the above process can trigger an electrical signal, and the opening and closing of the second servo motor 15 can be controlled through an external PLC control system. Then, when the photoelectric liquid level sensing switch 16 does not contact the liquid surface, the second servo motor 15 controls the rotation of the lead screw 14. Since the lead screw 14 is threadedly connected to the clamping block 2, and guide rods 17 fixed on the inner wall of the water tank 1 are provided on both sides of the slide rail 13, the clamping block 2 is slidably connected to the guide rods 17, and then when the second servo motor 15 is driven, the clamping block 2 drives the connecting pipe 3 to move stably. When the photoelectric liquid level sensing switch 16 contacts the liquid surface, the second servo motor 15 stops working to keep the connecting pipe 3 in position. The water drawn by the connecting pipe 3 is always in the upper layer of liquid inside the water tank 1. Therefore, the amount of mixed materials entering the water pump during the pumping process can be greatly reduced, and the water pump can be avoided from being blocked.

[0028] The photoelectric liquid level sensor switch 16 model is BL-YW-SR-WPOL-02, which contains a near-infrared light-emitting diode and a photosensitive receiver.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water inlet structure for a water pump in a coal mine, characterized in that: The water inlet structure of a coal mine underground water pump comprises a water storage tank (1), a driving assembly is slidably connected to the inner wall of the water storage tank (1), the driving assembly comprises a clamping and fixing block (2), a connecting pipe (3) is screwed to the clamping and fixing block (2), an end of the connecting pipe (3) away from the clamping and fixing block (2) is connected to a telescopic pipe (4), an end of the telescopic pipe (4) away from the connecting pipe (3) is fixed with a water outlet pipe (5), the water outlet pipe (5) is fixed to the top of the water storage tank (1), the driving assembly can drive the connecting pipe (3) to move up and down, and the upper end of the water storage tank (1) is covered with a cover plate (6).

2. A water inlet structure for a coal mine underground water pump according to claim 1, characterized in that: A groove (7) opened on the top of the water storage tank (1) is provided at one end of the cover plate (6), an inverted trapezoidal cover (8) is fixed inside the groove (7), screws (9) rotatably connected to the inside of the water storage tank (1) are provided at both ends of the inverted trapezoidal cover (8), one end of each screw (9) protrudes out of the water storage tank (1), a first servo motor (10) is fixed to the protruding end, and an extrusion port (18) is provided on the side of the water storage tank (1) corresponding to the screw (9) away from the protruding end.

3. A water inlet structure for a coal mine underground water pump according to claim 2, characterized in that: The inverted trapezoidal cover (8) is evenly distributed with water leakage holes (11) all around, and each corner thereof is provided with a rounded corner.

4. The water inlet structure of a coal mine underground water pump according to claim 1, characterized in that: The cover plate (6) is provided with a through hole (12) for the water outlet pipe (5) to extend out.

5. The water inlet structure of a coal mine underground water pump according to claim 1, characterized in that: The driving assembly further comprises a slide rail (13) fixed on the inner wall of the water storage tank (1), the slide rail (13) being slidably connected to the clamping and fixing block (2), the clamping and fixing block (2) being internally threadedly connected to a lead screw (14), both ends of the lead screw (14) being rotatably connected to the slide rail (13), one end of the lead screw (14) extending out, a second servo motor (15) being fixed to the extended end, and further comprising a photoelectric liquid level sensing switch (16) screwed to the bottom of the clamping and fixing block (2), the photoelectric liquid level sensing switch (16) being electrically connected to the second servo motor (15).

6. A water inlet structure for underground coal mine water pump according to claim 5, characterized in that: Guide rods (17) fixed on the inner wall of the water storage tank (1) are provided on both sides of the slide rail (13), and the clamping and fixing block (2) is slidably connected to the guide rods (17).

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