Underground ventilation and drainage device for coal mining and use method

Abstract

The invention relates to the technical field of coal mining, in particular to a coal mining underground ventilation and drainage device and a using method.The coal mining underground ventilation and drainage device comprises a base, a water storage tank is fixedly connected to the outer wall of the bottom end of the base, a mounting hole is formed in the outer wall of the top end of the base, and an outer plate is fixedly connected to the inner wall of one side of the mounting hole; the inner wall of the other side of the mounting hole is fixedly connected with an inner plate; the drainage mechanism is arranged on the outer wall of the outer plate; the drainage mechanism comprises a first annular pipe slidably connected to the inner wall of the outer plate, a rack is fixedly connected to the outer wall of one side of the first annular pipe, and a motor is installed on the outer wall of one side of the outer plate. In the drainage process, air is introduced into the water storage tank through the air suction pipe, accumulated water flowing and filtering are promoted, the ventilation process and the drainage process are matched with each other, the overall operation efficiency is improved, the spraying structure is in a moving state all the time, spraying and air suction are more uniform, and the air quality and the overall environment in a mine are improved.

Description

Technical Field

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

[0002] The function of mine ventilation equipment is to deliver fresh air to the underground to improve working conditions and ensure safe production.

[0003] A search of a Chinese patent with publication number CN221195109U discloses a coal mine ventilation device, which introduces external air into the shell from the air inlet through an induced draft structure, and then passes through a filter plate, an activated carbon filter and a sterilization layer filter in sequence to filter, adsorb and sterilize dust, gas and harmful media in the gas before being discharged from the air outlet. At the same time, the scraper assembly is driven by the induced draft structure to scrape off the dust filtered and adsorbed on the surface of the filter plate, and the scraped dust falls from the dust outlet into the dust collection box under the action of its own gravity, thereby greatly extending the service life of the existing coal mine ventilation device and ensuring that the ventilation effect of the filter structure is effective during the service life.

[0004] Based on the above search and combined with existing technologies, it was found that: the ventilation and drainage equipment in coal mines lack coordinated work, the air circulation in the ventilation system is poor, which easily leads to unsatisfactory ventilation effects and poses a threat to workers' health; and the slow flow of accumulated water during drainage can easily cause blockages, affecting drainage efficiency, resulting in low overall operating efficiency, and the air quality and overall environment of the coal mine cannot be guaranteed, affecting the mining progress of the coal mine. Summary of the Invention

[0005] The purpose of the present invention is to provide a ventilation and drainage device for underground coal mining and a method of use, so as to solve the problems raised in the above background technology.

[0006] The technical solution of the present invention is: a ventilation and drainage device for underground coal mining, comprising a base, wherein the bottom outer wall of the base is fixedly connected to a water storage tank, the top outer wall of the base is provided with a mounting hole, the inner wall of one side of the mounting hole is fixedly connected to an outer plate, and the inner wall of the other side of the mounting hole is fixedly connected to an inner plate, and further comprising;

[0007] A drainage mechanism, the drainage mechanism being arranged on the outer wall of the outer plate;

[0008] The drainage mechanism includes an annular tube slidably connected to the inner wall of the outer plate, a rack is fixedly connected to the outer wall of one side of the annular tube, a motor is installed on the outer wall of one side of the outer plate, and a gear is fixedly connected to the output shaft of the motor. The inner wall of the annular tube is provided with a water inlet annular tube, and a plurality of through holes are opened on the outer walls on both sides of the water inlet annular tube, and a plurality of rectangular holes are opened on the inner walls of the two sides of the annular tube, and a water outlet pipe is slidably connected to the inner wall of the rectangular hole, a nozzle is installed on the outer wall of one side of the bottom of the water outlet pipe, and a connecting pipe is provided on the outer wall of one side of the top of the water outlet pipe, and the connecting pipe is slidably connected to the inner wall of the through hole;

[0009] a ventilation mechanism, the ventilation mechanism being arranged on the outer wall of the inner plate;

[0010] An air suction hole is provided on the inner wall of one side of the inner plate, an air suction pipe is inserted into the inner wall of the air suction hole, an annular tube 2 is slidably connected to the outer wall of the inner plate, a number of air inlet holes are provided on the outer walls on both sides of the annular tube 2, an air suction filter is fixedly connected to the inner wall of the air inlet hole, a support plate is fixedly connected to the outer wall of the bottom of the water outlet pipe, a telescopic rod is fixedly connected to the outer wall on both sides of the bottom end of the support plate, a spring 2 is sleeved on the outer wall of the telescopic rod, and one end of the telescopic rod piston rod is fixedly connected to the outer wall of the annular tube 2.

[0011] Preferably, the outer plate, rack and inner plate are arranged in a ring shape, and the circles of the outer plate, inner plate, ring tube one and ring tube two are located in the same position. An engaging hole is opened on the outer wall of one side of the outer plate, and the gear and rack are adapted to the position of the engaging hole. The gear is engaged with the rack, and an air-liquid separator is installed on the outer wall of one side of the bottom of the outer plate. The air intake pipe is connected to the input end of the air-liquid separator, and an air pump is installed at the output end of the air-liquid separator. The air intake pipe is adapted to the size of ring tube two.

[0012] Preferably, the water outlet pipe is slidably connected to the outer wall of the water inlet annular pipe, the water outlet pipe and the air intake filter are distributed in a ring array, the water outlet pipe is adapted to the position of the air inlet, the top of the water outlet pipe is set in a semicircular shape, and a number of pressing blocks are fixedly connected to the inner walls on both sides of the outer plate, and the pressing blocks are distributed in an arc-shaped array, and a pressing rod is fixedly connected to the inner walls on both sides of the bottom of the outer plate, and the pressing rod is set in an arc shape, and the pressing rod and the pressing block are adapted to the size of the water outlet pipe.

[0013] Preferably, a filter cover is fixedly connected to the inner wall of the bottom of the water tank, a water pump is installed on the inner wall of the filter cover, an inlet pipe is connected to the output end of the water pump, a water inlet hole is opened on the outer wall of the bottom end of the outer plate, the water inlet pipe is connected to the inner wall of the water inlet hole, and the size of the water inlet pipe is adapted to the water inlet annular pipe.

[0014] Preferably, a filter hole is provided on the top outer wall of the base, a filter plate is fixedly connected to the inner wall of the filter hole, an air inlet pipe is connected to the output end of the air pump, a diversion pipe is fixedly connected to the bottom outer wall of the air inlet pipe, and a plurality of blowing pipes are provided on the outer wall of one side of the diversion pipe, and the blowing pipes are adapted to the height of the bottom of the inner plate.

[0015] Preferably, an exhaust pipe is provided on one side outer wall of the top of the water tank, and a drain pipe is provided on one side outer wall of the bottom of the water tank. A number of mounting grooves are provided on the outer walls on both sides of the inner plate, and the mounting grooves are distributed in an arc-shaped array. The inner wall of the mounting groove is slidably connected to a sliding rod, and a limiting protrusion is provided on the top outer wall of the sliding rod. A spring 1 is sleeved on the top outer wall of the sliding rod, and the two ends of the spring 1 are respectively fixedly connected to the mounting groove and the inner wall of the limiting protrusion, and the two ends of the spring 2 are respectively fixedly connected to the support plate and the outer wall of the annular tube.

[0016] Preferably, a rotating shaft is rotatably provided on the inner wall of the bottom of the sliding rod, a guide plate is installed on the outer wall of the rotating shaft, and a plurality of brackets are fixedly connected to the inner wall of the inner plate, and the brackets are adapted to the position of the sliding rod. The brackets are U-shaped, and the guide plate is slidably connected to the inner wall of the bracket, and the guide plate is adapted to the position of the air inlet.

[0017] A method for using a ventilation and drainage device in a coal mine, the method comprising the following steps:

[0018] S1: Equipment preparation and installation: Place the base of the device firmly in the predetermined position in the mine, ensure that the water storage tank at the bottom of the base can collect the accumulated water normally, and connect the drainage mechanism and ventilation structure components;

[0019] S2: Start the drainage mechanism, and the accumulated water is filtered through the filter plate on the base and collected in the water storage tank. The corresponding extension pipe can be connected to the drainage pipe to directly output it to the outside of the coal mine tunnel to complete the drainage;

[0020] S3: Start the ventilation and purification mechanism, the air pump works, and the air in the coal mine is extracted, filtered, and replaced through the annular pipe 2, the air inlet hole, and the air suction filter. The air is then output to the outside through the exhaust pipe on the water storage tank and the corresponding extension pipe. Fresh air from outside the coal mine enters to create a ventilation effect.

[0021] S4: Water mist is sprayed through the nozzle to absorb dust and harmful gases in the air to purify the air. The ventilation mechanism and drainage mechanism assist each other to complete the ventilation and drainage treatment in the coal mining well.

[0022] The present invention provides an underground ventilation and drainage device for coal mining and a method of use thereof, which has the following improvements and advantages compared with the prior art:

[0023] First, the present invention integrates ventilation and drainage functions into one device by providing a base, an outer plate, an inner plate, a water storage tank, an air pump, a water outlet pipe, a nozzle and an air intake filter, thereby realizing air purification, ventilation and drainage functions. During the ventilation process, the atomized accumulated water can be used to purify the air, and the air flow is increased to enhance the ventilation effect. During the drainage process, the air is introduced into the water storage tank through the air intake pipe to promote the flow and filtration of the accumulated water. The ventilation and drainage processes cooperate with each other to improve the overall operating efficiency. The spray structure is always in a moving state, the spray suction is more uniform, and the air quality and the overall environment in the mine are improved.

[0024] Secondly, the present invention is provided with a water outlet pipe, a support plate, a telescopic rod, a second spring and an air suction filter. The pressing block presses the semicircular head of the water outlet pipe, the water outlet pipe drives the support plate to move, the telescopic rod and the second spring contract, and when the water outlet pipe is separated from the pressing block, the water outlet pipe resets, completing one displacement. Each time the water outlet pipe moves, impurities remaining on the air suction filter are scraped and cleaned. The moving water outlet pipe further increases the spraying range and can effectively scrape and clean impurities on the air suction filter, further improving the ventilation effect.

[0025] Thirdly, the present invention is provided with a pressing rod, a water outlet pipe, an air inlet pipe, a gas-liquid separator and an air jet pipe. When the pressing rod is at the bottom of the base, the water outlet pipe is constantly pressed, so that the water outlet pipe is always kept in a state of blocking the air intake filter, thereby preventing water inside the water storage tank from entering the annular pipe 2 through the air intake filter and being extracted. A small amount of air containing moisture enters the gas-liquid separator through the air intake pipe, and the moisture is removed to prevent the air pump from being damaged by excessive water inflow. The airflow ejected from the air jet pipe can further clean the water outlet pipe and the air intake filter at the bottom, thereby ensuring the service life of the device.

[0026] Fourthly, the present invention is provided with a bracket, a sliding rod and a guide plate. Each time the pressing block presses the water outlet pipe to move, the bottom of the water outlet pipe presses the sliding rod. The sliding rod moves, thereby driving the guide plate on the bracket to rotate through the rotating shaft. The guide plate is tilted up to guide the water mist sprayed from the nozzle at a certain angle, so that the water mist is more evenly distributed in the mine, furthering the air flow in the mine and improving the ventilation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 2 is a schematic cross-sectional view of the outer plate and inner plate connection structure of the present invention;

[0030] Figure 3 It is a schematic cross-sectional view of a water storage tank of the present invention;

[0031] Figure 4 It is an exploded schematic diagram of the outer plate connection structure of the present invention;

[0032] Figure 5 This is an exploded schematic diagram of the annular pipe-connection structure of the present invention;

[0033] Figure 6 is a schematic diagram of the inner plate of the present invention;

[0034] Figure 7 It is a schematic diagram of the water outlet pipe of the present invention;

[0035] Figure 8 Schematic diagram of the guide plate of the present invention.

[0036] Description of reference numerals:

[0037] 1. Base; 2. Water tank; 3. Exhaust pipe; 4. Drain pipe; 5. Motor; 6. Filter plate; 7. Gear; 8. Gas-liquid separator; 9. Air pump; 10. Intake pipe; 11. Outer plate; 12. Inner plate; 13. Annular pipe 1; 14. Annular pipe 2; 15. Water outlet pipe; 16. Intake pipe; 17. Blowing pipe; 18. Rack; 19. Inlet annular pipe; 20. Filter cover; 21. Inlet pipe; 22. Water pump; 23. Press rod; 24. Support plate; 25. Nozzle; 26. Through hole; 27. Sliding rod; 28. Spring 1; 29. ​​Guide plate; 30. Spring 2; 31. Connecting pipe; 32. Rotating shaft; 33. Bracket; 34. Intake filter; 35. Press block. DETAILED DESCRIPTION

[0038] The present invention is described in detail below, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] The present invention provides an underground ventilation and drainage device for coal mining and a method of use through improvement. The technical solution of the present invention is:

[0040] like Figures 1-8 As shown, a ventilation and drainage device for underground coal mining includes a base 1, a water tank 2 is fixedly connected to the bottom outer wall of the base 1, a mounting hole is opened on the top outer wall of the base 1, an outer plate 11 is fixedly connected to the inner wall of one side of the mounting hole, and an inner plate 12 is fixedly connected to the inner wall of the other side of the mounting hole, and further includes;

[0041] Drainage mechanism, the drainage mechanism is arranged on the outer wall of the outer plate 11;

[0042] The drainage mechanism includes an annular tube 13 slidably connected to the inner wall of the outer plate 11, a rack 18 is fixedly connected to one outer wall of the annular tube 13, a motor 5 is mounted on one outer wall of the outer plate 11, a gear 7 is fixedly connected to the output shaft of the motor 5, a water inlet annular tube 19 is provided on the inner wall of the annular tube 13, a plurality of through holes 26 are opened on the outer walls on both sides of the water inlet annular tube 19, a plurality of rectangular holes are opened on the inner walls of the two sides of the annular tube 13, a water outlet pipe 15 is slidably connected to the inner wall of the rectangular hole, a nozzle 25 is mounted on one outer wall at the bottom of the water outlet pipe 15, a connecting pipe 31 is provided on one outer wall at the top of the water outlet pipe 15, and the connecting pipe 31 is slidably connected to the inner wall of the through hole 26;

[0043] Ventilation mechanism, the ventilation mechanism is arranged on the outer wall of the inner plate 12;

[0044] An air suction hole is provided on the inner wall of one side of the inner plate 12, and an air suction pipe 10 is inserted into the inner wall of the air suction hole. An annular tube 2 14 is slidably connected to the outer wall of the inner plate 12. Several air inlet holes are provided on the outer walls on both sides of the annular tube 2 14. An air suction filter 34 is fixedly connected to the inner wall of the air inlet hole. A support plate 24 is fixedly connected to the outer wall of the bottom of the water outlet pipe 15. A telescopic rod is fixedly connected to the outer walls on both sides of the bottom end of the support plate 24. A spring 2 30 is sleeved on the outer wall of the telescopic rod. One end of the telescopic rod piston rod is fixedly connected to the outer wall of the annular tube 2 14.

[0045] Furthermore, the outer plate 11, the rack 18 and the inner plate 12 are arranged in an annular shape, and the circles of the outer plate 11, the inner plate 12, the annular tube 13 and the annular tube 2 14 are located in the same position. A meshing hole is provided on the outer wall of one side of the outer plate 11, and the gear 7 and the rack 18 are adapted to the position of the meshing hole. The gear 7 is meshed with the rack 18. A gas-liquid separator 8 is installed on the outer wall of one side of the bottom of the outer plate 11, and the air intake pipe 10 is connected to the input end of the gas-liquid separator 8. The output end of the gas-liquid separator 8 is equipped with an air pump 9. The air intake pipe 10 is connected to the annular tube 2 1 4 is adapted to the size of the outer plate 11, the water outlet pipe 15 is slidably connected to the outer wall of the water inlet annular pipe 19, the water outlet pipe 15 and the air intake filter 34 are distributed in a ring array, the water outlet pipe 15 is adapted to the position of the air inlet, the top of the water outlet pipe 15 is set in a semicircular shape, and a number of pressing blocks 35 are fixedly connected to the inner walls on both sides of the outer plate 11. The pressing blocks 35 are distributed in an arc-shaped array, and the inner walls on both sides of the bottom of the outer plate 11 are fixedly connected with pressing rods 23. The pressing rods 23 are set in an arc shape, and the pressing rods 23 and the pressing blocks 35 are adapted to the size of the water outlet pipe 15.

[0046] Furthermore, a filter cover 20 is fixedly connected to the inner wall of the bottom of the water tank 2, and a water pump 22 is installed on the inner wall of the filter cover 20. The output end of the water pump 22 is connected to the water inlet pipe 21. A water inlet hole is provided on the outer wall of the bottom end of the outer plate 11, and the water inlet pipe 21 is connected to the inner wall of the water inlet hole. The water inlet pipe 21 is adapted to the size of the water inlet annular pipe 19. A filter hole is provided on the top outer wall of the base 1, and the inner wall of the filter hole is fixedly connected to the filter plate 6. The output end of the air pump 9 is connected to the air inlet pipe 16, and the outer wall of the bottom end of the air inlet pipe 16 is fixedly connected to a diversion pipe. Several blowing pipes 17 are provided on the outer wall of one side of the diversion pipe, and the blowing pipe 17 is adapted to the height of the bottom of the inner plate 12.

[0047] Furthermore, an exhaust pipe 3 is provided on one side outer wall of the top of the water tank 2, and a drain pipe 4 is provided on one side outer wall of the bottom of the water tank 2. A number of mounting grooves are provided on the outer walls of both sides of the inner plate 12, and the mounting grooves are distributed in an arc-shaped array. The inner wall of the mounting groove is slidably connected to a sliding rod 27, and a limiting protrusion is provided on the top outer wall of the sliding rod 27. A spring 1 28 is sleeved on the top outer wall of the sliding rod 27, and the two ends of the spring 1 28 are respectively fixedly connected to the mounting groove and the inner wall of the limiting protrusion, and the two ends of the spring 2 30 are respectively fixedly connected to the support plate 24 and the outer wall of the annular tube 2 14, and a rotating shaft 32 is rotatably provided on the inner wall of the bottom of the sliding rod 27. The outer wall of the rotating shaft 32 is provided with a spring 28. A guide plate 29 is installed, and a number of brackets 33 are fixedly connected to the inner wall of the inner plate 12. The bracket 33 is adapted to the position of the sliding rod 27. The bracket 33 is U-shaped, and the guide plate 29 is slidably connected to the inner wall of the bracket 33. The guide plate 29 is adapted to the position of the air inlet. The guide plate 29 is tilted to guide the water mist sprayed from the nozzle 25 at a certain angle, so that the water mist is more evenly distributed in the mine, so that the water outlet pipe 15 is reset, and the air absorbed by the suction filter 34 is staggered with the water mist, realizing the alternating work of spraying and suction in the structural position of the pressing block 35. The guiding effect of the guide plate 29 and the spraying of water mist further promote the air flow in the mine.

[0048] A method for using a ventilation and drainage device in a coal mine, the method comprising the following steps:

[0049] S1: Equipment preparation and installation: Place the base 1 of the device firmly at the predetermined location in the mine, ensure that the water storage tank 2 at the bottom of the base 1 can normally collect accumulated water, and connect the drainage mechanism and ventilation structure components;

[0050] S2: Start the drainage mechanism, the accumulated water is filtered through the filter plate 6 on the base 1 and collected in the water storage tank 2. The corresponding extension pipe can be connected to the drainage pipe 4 to directly output it to the outside of the coal mine tunnel to complete the drainage;

[0051] S3: The ventilation and purification mechanism is started, and the air pump 9 is activated. The air in the coal mine is extracted, filtered, and replaced through the annular pipe 14 in conjunction with the air inlet and the air suction filter 34. The air is then output to the outside through the exhaust pipe 3 on the water storage tank 2 and connected to the corresponding extension pipe. Fresh air from outside the coal mine enters to create a ventilation effect.

[0052] S4: Water mist is sprayed through the nozzle 25 to absorb dust and harmful gases in the air to purify the air. The ventilation mechanism and the drainage mechanism assist each other to complete the ventilation and drainage treatment in the coal mine.

[0053] Working principle: When using the ventilation and drainage device for coal mining underground, the base 1 and the water tank 2 are firmly placed in the designated position, the outer plate 11 and the inner plate 12 are installed on the base 1, and the inner plate 12 is arranged in a ring shape to match the size of the coal mining tunnel. The accumulated water in the coal mining underground is filtered through the filter plate 6 on the base 1 and then enters the water tank 2 to be collected. The motor 5, the gas-liquid separator 8 and the air pump 9 on the outer plate 11 are started. The motor 5 drives the annular pipe 13 inside the outer plate 11 to rotate slowly through the gear 7 and the rack 18. At the same time, the water pump 22 extracts the filtered water from the inside of the water tank 2 and sends it into the space between the outer plate 11 and the water inlet annular pipe 19 through the water inlet pipe 21, and then enters the water outlet pipe 15 through the through hole 26 and the connecting pipe 31, and finally passes through the nozzle 25 to spray The air is sprayed out to purify the air in the coal mine excavation well and has a certain temperature regulation effect. At the same time, the air pump 9 extracts the space in the well through the suction pipe 10 in cooperation with the suction filter 34 on the annular pipe 2 14, so that fresh air from the outside can enter to form a ventilation effect. The air absorbed by the air pump 9 enters the water storage tank 2 through the air inlet pipe 16, assists the flow and filtration of accumulated water, improves the drainage effect, and can finally be discharged from the coal mine excavation well through the connected exhaust pipe 3. The water mist sprayed by the nozzle 25 can purify the air to be extracted in the coal mine excavation well. The water mist sprayed by the nozzle 25 and the suction generated by the suction structure work together to promote the air flow in the mine, and the spray structure is always in motion, the spray suction is more uniform, and the ventilation effect is further improved.

[0054] A pressing block 35 is provided on the outer plate 11, and a pressing rod 23 is provided at the bottom of the outer plate 11. When the annular tube 13 rotates, the water outlet pipe 15 moves to the position of the pressing block 35 above the base 1, and the pressing block 35 presses the semicircular head of the water outlet pipe 15, and the water outlet pipe 15 drives the support plate 24 to move, and the telescopic rod and the spring 2 30 contract. When the water outlet pipe 15 is separated from the pressing block 35, the water outlet pipe 15 is reset, completing a displacement, and the nozzle 25 moves accordingly to further increase the spraying range and effect, and each time the water outlet pipe 15 is moved, the impurities remaining on the air intake filter 34 will be scraped and cleaned to ensure the filtering effect of the air intake filter 34. When it is at the bottom of the base 1, the pressing rod 23 will keep pressing the water outlet pipe 15 Pressure is applied to keep the water outlet pipe 15 in a state of covering the air intake filter 34, preventing the water inside the water tank 2 from entering the annular pipe 2 14 through the air intake filter 34 and being extracted, and a small amount of air containing moisture enters the gas-liquid separator 8 through the air intake pipe 10, and the moisture is removed to prevent the air pump 9 from being damaged by excessive water intake. The slide rails provided on the outer plate 11 ensure the stable sliding of the annular pipe 13. Similarly, the annular pipe 2 14 slides stably with the inner plate 12. Openings are provided on the outer sides of the annular pipe 13 and the water inlet annular pipe 19 to facilitate the entry of filtered accumulated water by the water inlet pipe 21. The water outlet pipe 15 is connected to the through hole 26 of the water inlet annular pipe 19 through the connecting pipe 31. When the water outlet pipe 15 slides, the connecting pipe 31 also slides in the through hole 26.

[0055] A bracket 33 and a guide plate 29 are set at the position where the inner plate 12 is exposed above the base 1, corresponding to the position of the pressing block 35. Each time the pressing block 35 presses the water outlet pipe 15 to move, the bottom of the water outlet pipe 15 presses the sliding rod 27, and the sliding rod 27 moves to drive the guide plate 29 on the bracket 33 to rotate through the rotating shaft 32. The guide plate 29 is tilted to just guide the water mist sprayed from the nozzle 25 at a certain angle, so that the water mist is more evenly distributed in the mine, so that the water outlet pipe 15 is reset, and the air absorbed by the air filter 34 is staggered with the water mist, so that the spray and suction are alternately working at the structural position of the pressing block 35. The guiding effect of the guide plate 29 and the spraying of water mist further promote the air flow in the mine and improve the ventilation effect.

[0056] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacements of the above technical features. Matters not covered in the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A ventilation and drainage device for coal mining underground, comprising a base (1), wherein the bottom outer wall of the base (1) is fixedly connected to a water storage tank (2), the top outer wall of the base (1) is provided with a mounting hole, the inner wall of one side of the mounting hole is fixedly connected to an outer plate (11), and the inner wall of the other side of the mounting hole is fixedly connected to an inner plate (12), characterized in that: Also includes; A drainage mechanism, the drainage mechanism being arranged on the outer wall of the outer plate (11); The drainage mechanism comprises an annular tube (13) slidably connected to the inner wall of the outer plate (11), a rack (18) is fixedly connected to one side outer wall of the annular tube (13), a motor (5) is installed on one side outer wall of the outer plate (11), an output shaft of the motor (5) is fixedly connected to a gear (7), an inner wall of the annular tube (13) is provided with a water inlet annular tube (19), a plurality of through holes (26) are opened on both sides outer walls of the water inlet annular tube (19), a plurality of rectangular holes are opened on both sides inner walls of the annular tube (13), a water outlet pipe (15) is slidably connected to the inner wall of the rectangular hole, a nozzle (25) is installed on one side outer wall of the bottom of the water outlet pipe (15), a connecting pipe (31) is provided on one side outer wall of the top of the water outlet pipe (15), and the connecting pipe (31) is slidably connected to the inner wall of the through hole (26); A ventilation mechanism, the ventilation mechanism being arranged on the outer wall of the inner plate (12); An air intake hole is provided on the inner wall of one side of the inner plate (12), an air intake pipe (10) is inserted into the inner wall of the air intake hole, an annular tube 2 (14) is slidably connected to the outer wall of the inner plate (12), a plurality of air intake holes are provided on the outer walls on both sides of the annular tube 2 (14), an air intake filter (34) is fixedly connected to the inner wall of the air intake hole, the outer wall of the bottom of the water outlet pipe (15) is fixedly connected to the support plate (24), the outer walls on both sides of the bottom end of the support plate (24) are fixedly connected to a telescopic rod, the outer wall of the telescopic rod is provided with a spring 2 (30), and one end of the telescopic rod piston rod is fixedly connected to the outer wall of the annular tube 2 (14).

2. The underground ventilation and drainage device for coal mining according to claim 1, characterized in that: The outer plate (11), the rack (18) and the inner plate (12) are arranged in an annular shape. The circles of the outer plate (11), the inner plate (12), the annular tube 1 (13) and the annular tube 2 (14) are located at the same position. An engagement hole is provided on the outer wall of one side of the outer plate (11). The gear (7) and the rack (18) are adapted to the positions of the engagement hole. The gear (7) is engaged with the rack (18). A gas-liquid separator (8) is installed on the outer wall of one side of the bottom of the outer plate (11). The air intake pipe (10) is connected to the input end of the gas-liquid separator (8). An air pump (9) is installed at the output end of the gas-liquid separator (8). The size of the air intake pipe (10) is adapted to that of the annular tube 2 (14).

3. The ventilation and drainage device for underground coal mining according to claim 1, characterized in that: The water outlet pipe (15) is slidably connected to the outer wall of the water inlet annular pipe (19), the water outlet pipe (15) and the air intake filter (34) are distributed in an annular array, the water outlet pipe (15) is adapted to the position of the air inlet, the top of the water outlet pipe (15) is arranged in a semicircular shape, a plurality of pressing blocks (35) are fixedly connected to the inner walls on both sides of the outer plate (11), the pressing blocks (35) are distributed in an arc-shaped array, the inner walls on both sides of the bottom of the outer plate (11) are fixedly connected to pressing rods (23), the pressing rods (23) are arranged in an arc shape, and the pressing rods (23) and the pressing blocks (35) are adapted to the size of the water outlet pipe (15).

4. The underground ventilation and drainage device for coal mining according to claim 1, characterized in that: The bottom inner wall of the water storage tank (2) is fixedly connected with a filter cover (20), the inner wall of the filter cover (20) is installed with a water pump (22), the output end of the water pump (22) is plugged with a water inlet pipe (21), the bottom outer wall of the outer plate (11) is provided with a water inlet hole, the water inlet pipe (21) is plugged into the inner wall of the water inlet hole, and the size of the water inlet pipe (21) is adapted to the size of the water inlet annular pipe (19).

5. The underground ventilation and drainage device for coal mining according to claim 2, characterized in that: A filter hole is provided on the top outer wall of the base (1), a filter plate (6) is fixedly connected to the inner wall of the filter hole, an air inlet pipe (16) is plugged into the output end of the air pump (9), a diversion pipe is fixedly connected to the bottom outer wall of the air inlet pipe (16), and a plurality of air blowing pipes (17) are provided on the outer wall of one side of the diversion pipe, and the air blowing pipes (17) are adapted to the height of the bottom of the inner plate (12).

6. The underground ventilation and drainage device for coal mining according to claim 5, characterized in that: An exhaust pipe (3) is provided on one side outer wall of the top of the water storage tank (2), and a drain pipe (4) is provided on one side outer wall of the bottom of the water storage tank (2). A plurality of mounting grooves are provided on the outer walls of both sides of the inner plate (12), and the mounting grooves are distributed in an arc-shaped array. The inner wall of the mounting groove is slidably connected to a sliding rod (27), and a limiting protrusion is provided on the top outer wall of the sliding rod (27). A spring 1 (28) is sleeved on the top outer wall of the sliding rod (27), and the two ends of the spring 1 (28) are respectively fixedly connected to the mounting groove and the inner wall of the limiting protrusion, and the two ends of the spring 2 (30) are respectively fixedly connected to the support plate (24) and the outer wall of the annular tube 2 (14).

7. The underground ventilation and drainage device for coal mining according to claim 6, characterized in that: The bottom inner wall of the sliding rod (27) is rotatably provided with a rotating shaft (32), the outer wall of the rotating shaft (32) is installed with a guide plate (29), the inner wall of the inner plate (12) is fixedly connected with a plurality of brackets (33), the positions of the brackets (33) and the sliding rod (27) are adapted, the brackets (33) are U-shaped, the guide plate (29) is slidably connected to the inner wall of the bracket (33), and the guide plate (29) is adapted to the position of the air inlet.

8. The method for using the ventilation and drainage device for underground coal mining according to any one of claims 1 to 7, characterized in that: The method includes the following steps: S1: Equipment preparation and installation: Place the base (1) of the device firmly at the predetermined location in the mine, ensure that the water storage tank (2) at the bottom of the base (1) can normally collect the accumulated water, and connect the drainage mechanism and ventilation structure components; S2: The drainage mechanism is activated, and the accumulated water is filtered through the filter plate (6) on the base (1) and enters the water storage tank (2) for collection. The corresponding extension pipe can be connected to the drainage pipe (4) to directly output it to the outside of the coal mine tunnel to complete the drainage; S3: Start the ventilation and purification mechanism, the air pump (9) works, and the air in the coal mine is extracted, filtered and replaced through the annular pipe (14) in conjunction with the air inlet and the air suction filter (34), and then output to the outside through the exhaust pipe (3) on the water storage tank (2) connected to the corresponding extension pipe, so that fresh air outside the coal mine enters to form a ventilation effect; S4: Spraying water mist through the nozzle (25), using the water mist to absorb dust and harmful gases in the air to purify the air. The ventilation mechanism and the drainage mechanism assist each other to complete the ventilation and drainage treatment in the coal mine.

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