Ventilation and dust reduction device for coal mine tunnel

Abstract

The invention belongs to the technical field of coal mine tunnel ventilation and dust falling, and particularly discloses a coal mine tunnel ventilation and dust falling device which comprises a supporting frame, a ventilation and dust falling pipe, a self-cleaning dust filtering device and a centrifugal water film breaking and dust falling device, the ventilation and dust falling pipe is arranged on the supporting frame, and the centrifugal water film breaking and dust falling device is arranged in the ventilation and dust falling pipe. And the self-cleaning dust filtering device is connected with the centrifugal water film crushing and dust falling device. The ventilation and dust reduction device for the coal mine tunnel has the advantages that multi-mechanism cooperative efficient dust reduction is achieved, uniform and fine water mist is generated to improve the dust reduction effect, a dust filter screen is prevented from being blocked, equipment operation is guaranteed, clean air exhaust is accelerated, dust harm is reduced, the working environment is improved, and production safety is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of mine roadway ventilation and dust reduction, and specifically refers to a mine roadway ventilation and dust reduction device. Background Art

[0002] During the process of coal mining operations, a large amount of dust is generated in the roadway. Coal mine dust mainly comes from processes such as coal cutting, coal loading, coal transportation by shearer, and hole drilling by roof bolter. These dusts not only cause serious harm to the physical health of workers, such as leading to respiratory diseases such as pneumoconiosis, but also affect the safe production of coal mines. High-concentration dust may reduce the visibility in the roadway, interfere with the line of sight of workers, increase the risk of equipment operation errors, and at the same time, it is also easy to trigger safety accidents such as explosions. Therefore, effectively reducing the dust concentration in coal mine roadways is of extremely important significance.

[0003] The traditional sprinkler dust reduction method is to spray water mist into the roadway through a nozzle to suppress dust. However, the water mist distribution of this method is uneven, and it can only play a dust reduction role in a local area. Moreover, for some dust particles with smaller particle sizes, the capture effect is poor. And sprinkler dust reduction may cause water accumulation in the roadway, affecting the normal passage of the roadway and the normal operation of equipment, and may also increase the humidity in the roadway, causing certain corrosion effects on the roadway support structure, etc. In addition, simple ventilation dust reduction mainly relies on ventilation equipment to discharge the air containing dust from the roadway. However, this method may also diffuse a large amount of untreated dust to other areas while discharging dust, and for larger dust particles, it is easy to deposit inside the ventilation equipment, affecting the performance and service life of the ventilation equipment. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a mine roadway ventilation and dust reduction device with multi-mechanism collaborative and efficient dust reduction, generating uniform and fine water mist to improve the dust reduction effect, preventing the filter screen from being blocked to ensure the operation of the equipment, accelerating the discharge of clean air, reducing dust hazards, improving the working environment, and enhancing production safety.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a coal mine roadway ventilation and dust reduction device, which includes a support frame, a ventilation and dust reduction pipe, a self-cleaning dust filtering device, and a centrifugal water film breaking and dust reduction device. The ventilation and dust reduction pipe is arranged on the support frame, the centrifugal water film breaking and dust reduction device is arranged in the ventilation and dust reduction pipe, and the self-cleaning dust filtering device is connected to the centrifugal water film breaking and dust reduction device. The centrifugal water film breaking and dust reduction device includes a multi-stage transmission component, an induced fan blade, a centrifugal water film breaking and atomizing component, and a diversion type dust reduction and collection component. The multi-stage transmission component is arranged on the ventilation and dust reduction pipe, the induced fan blade is arranged on the multi-stage transmission component, the centrifugal water film breaking and atomizing component is arranged in the ventilation and dust reduction pipe, the centrifugal water film breaking and atomizing component is connected to the multi-stage transmission component, and the diversion type dust reduction and collection component is arranged on the ventilation and dust reduction pipe.

[0006] Further, the centrifugal water film breaking and atomizing component includes a rotating shaft, a centrifugal breaking cylinder, and a water supply component. The rotating shaft is rotatably arranged on the multi-stage transmission component, the centrifugal breaking cylinder is sleeved on the rotating shaft, the water supply component includes a water tank, a uniform water distribution ring cavity, a transmission pipe, and a water pump. The water tank is arranged on the support frame, the uniform water distribution ring cavity is sleeved outside the rotating shaft, the uniform water distribution ring cavity is not completely arranged in the centrifugal breaking cylinder, the intersection of the uniform water distribution ring cavity and the centrifugal breaking cylinder is sealed, water supply holes are arranged on the circumferential side wall of the uniform water distribution ring cavity in the centrifugal breaking cylinder, the water supply holes are arranged in an annular array, the water pump is arranged on the water tank, one end of the transmission pipe penetrates through the ventilation and dust reduction pipe and is connected to the uniform water distribution ring cavity, and the other end of the transmission pipe is connected to the water pump.

[0007] Preferably, centrifugal water outlet holes are arranged on the outer circumferential wall of the centrifugal breaking cylinder, and diversion type water film breaking tooth plates are arranged at the centrifugal water outlet holes. The water in the centrifugal breaking cylinder flows out from the centrifugal water outlet holes through rotation and centrifugation, and flows to the diversion type water film breaking tooth plates for rotational breaking to form water mist, which is mixed and settled with the dust in the coal mine roadway.

[0008] Further, the diversion type water film breaking tooth plates are arranged in a curved arc shape, and breaking teeth are arranged at one end of the diversion type water film breaking tooth plates away from the centrifugal breaking cylinder.

[0009] Among them, the diversion type dust reduction and collection component includes a dust reduction and collection cylinder and a diversion groove. The dust reduction and collection cylinder penetrates through the ventilation and dust reduction pipe and is arranged on the support frame, and the diversion groove is arranged on the inner wall of the ventilation and dust reduction pipe. The diversion groove can divert the particulate matter after atomized dust reduction into the dust reduction and collection cylinder.

[0010] Furthermore, the multi-stage transmission assembly includes a driving gear disk, a transmission gear disk, a fixing frame, a transmission shaft, a planetary transmission member, and a motor. The driving gear disk is rotatably disposed on the ventilation and dust reduction pipe. The fixing frame is disposed on the inner wall of the ventilation and dust reduction pipe. The transmission shaft is rotatably disposed on the fixing frame. The transmission gear disk is sleeved and fixed on the transmission shaft. The driving gear disk is meshed and connected with the transmission gear disk. The planetary transmission member is disposed on the transmission shaft. The motor is disposed on the ventilation and dust reduction pipe. The output end of the motor is connected with the driving gear disk. The induced fan blade is connected with the transmission shaft.

[0011] As a further preferred embodiment of the present invention, the planetary transmission member includes a support rod, an outer gear ring, a planetary gear, a planetary support, and a speed increasing wheel. The support rod is disposed on the outer circumferential wall of the transmission shaft. The outer gear ring is disposed on the support rod. The planetary support is sleeved and fixed on the fixing frame. The planetary gear is rotatably disposed on the planetary support. The planetary gear is meshed and connected with the outer gear ring. The speed increasing wheel is disposed at the end of the rotating shaft. The speed increasing wheel is meshed and connected with the planetary gear.

[0012] Wherein, the self-cleaning dust filtering device includes a connecting shaft, a cleaning ring plate, a cleaning brush, and a dust filtering net. The connecting shaft is connected with the driving gear disk. The cleaning ring plate is connected with the connecting shaft. The cleaning brush is disposed on the cleaning ring plate. The dust filtering net is disposed at the opening of the ventilation and dust reduction pipe. The cleaning brush can periodically clean the dust filtering net, effectively preventing the dust filtering net from being blocked.

[0013] Furthermore, the ventilation and dust reduction pipe includes an air inlet pipe, a collision dust reduction and collection pipe, and a clean air accelerating discharge pipe. The air inlet pipe is disposed on the support frame. The collision dust reduction and collection pipe is hermetically connected with the air inlet pipe in a through manner. The clean air accelerating discharge pipe is disposed on the support frame. The clean air accelerating discharge pipe is connected with the collision dust reduction and collection pipe in a through manner. The clean air accelerating discharge pipe is in a pipe shape with wide ends and a narrow middle. When the gas passes through the narrow middle area of the clean air accelerating discharge pipe, it is accelerated and can be quickly discharged, further enhancing the dust reduction efficiency.

[0014] The beneficial effects achieved by the present invention with the above structure are as follows: (1) Multi-mechanism collaborative dust reduction: The present invention achieves dust reduction through the collaborative action of multiple dust reduction mechanisms. First, the dust filtering net intercepts large particles, removing some coarse particulate dust in the air. Then, the water mist generated by the high-speed rotation of the centrifugal crushing cylinder collides and mixes with the dust. This mechanical and water mist combination method can effectively capture dust of different particle sizes, including small particle size dust that is difficult to handle by traditional dust reduction methods, greatly improving the overall efficiency of dust reduction; (2) Enhance the dust suppression effect of water mist: The high-speed rotation of the centrifugal crushing cylinder enables water to flow out evenly along the centrifugal water outlet holes and be broken into water mist at high speed by the crushing teeth. The water mist generated in this way is more uniform and fine. Compared with the traditional sprinkler dust suppression method, it can better come into full contact with dust, increasing the probability of collision between dust and water mist, thereby improving the dust suppression effect. (3) Prevent the dust filter net from being blocked: The cleaning ring plate and cleaning brush can clean the particulate matter adhering to the dust filter net during the operation of the equipment. This design effectively prevents the dust filter net from being blocked, ensuring the normal ventilation function of the ventilation and dust suppression pipe, avoiding problems such as poor ventilation and reduced dust suppression efficiency caused by the blockage of the dust filter net, reducing the frequency of equipment maintenance, and improving the reliability and service life of the equipment. (4) Optimize air discharge: The air after dust suppression treatment is quickly discharged through the clean air acceleration discharge pipe. This design can not only timely discharge the air after dust suppression from the roadway, avoiding potential secondary pollution caused by the retention of the air after dust suppression in the equipment, but also further enhance the dust suppression efficiency by the accelerated discharge method, making the entire dust suppression process more efficient and smooth. (5) Reduce dust hazards: The high-efficiency dust suppression effect can significantly reduce the dust concentration in the coal mine roadway, which is crucial for improving the working environment of the operators. Reducing the dust concentration can effectively reduce the risk of respiratory diseases such as pneumoconiosis for the operators, protecting the physical health of the operators. (6) Improve production safety: As the dust concentration decreases, the visibility in the roadway is improved, reducing potential safety hazards such as equipment operation errors caused by dust blocking the line of sight. At the same time, reducing the dust concentration also reduces the possibility of safety accidents such as dust explosions, which is beneficial to the safe production of the coal mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of a coal mine roadway ventilation and dust suppression device proposed by the present invention; Figure 2 is a left view of a coal mine roadway ventilation and dust suppression device proposed by the present invention; Figure 3 is a front view of a coal mine roadway ventilation and dust suppression device proposed by the present invention; Figure 4 is a top view of a coal mine roadway ventilation and dust suppression device proposed by the present invention; Figure 5 is a bottom view of a coal mine roadway ventilation and dust suppression device proposed by the present invention; Figure 6 is a cross-sectional view of a coal mine roadway ventilation and dust suppression device proposed by the present invention; Figure 7 is a schematic diagram of the structure of the water supply member; Figure 8 It is a schematic structural diagram of a centrifugal crushing cylinder; Figure 9 It is a schematic structural diagram of a multi-stage transmission assembly; Figure 10 It is a schematic structural diagram of a self-cleaning dust filtering device; Figure 11 It is a schematic structural diagram of a collision dust reduction collection pipe; Figure 12 It is a schematic structural diagram of a clean air accelerating discharge pipe.

[0016] Among them, 1. Support frame, 2. Ventilation and dust reduction pipe, 3. Self-cleaning dust filtering device, 4. Centrifugal water film crushing and dust reduction device, 5. Multi-stage transmission assembly, 6. Induced draft fan blade, 7. Centrifugal water film crushing and atomizing part, 8. Diversion type dust reduction collection part, 9. Rotating shaft, 10. Centrifugal crushing cylinder, 11. Water supply part, 12. Centrifugal water outlet hole, 13. Drainage type water film crushing tooth plate, 14. Crushing teeth, 15. Water tank, 16. Uniform water distribution ring cavity, 17. Transmission pipe, 18. Water pump, 19. Water supply hole, 20. Dust reduction collection cylinder, 21. Diversion groove, 22. Driving gear disk, 23. Driven gear disk, 24. Fixed frame, 25. Transmission shaft, 26. Planetary transmission part, 27. Motor, 28. Support rod, 29. Outer tooth ring, 30. Planet gear, 31. Planet support, 32. Speed increasing wheel, 33. Connecting shaft, 34. Cleaning ring plate, 35. Cleaning brush, 36. Dust filtering net, 37. Air inlet pipe, 38. Collision dust reduction collection pipe, 39. Clean air accelerating discharge pipe.

[0017] The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0020] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 shown, the present invention provides a coal mine roadway ventilation and dust reduction device, including a support frame 1, a ventilation and dust reduction pipe 2, a self-cleaning dust filtering device 3 and a centrifugal water film breaking dust reduction device 4. The ventilation and dust reduction pipe 2 is arranged on the support frame 1, the centrifugal water film breaking dust reduction device 4 is arranged in the ventilation and dust reduction pipe 2, and the self-cleaning dust filtering device 3 is connected to the centrifugal water film breaking dust reduction device 4.

[0021] As Figure 1 , Figure 6 , Figure 9 shown, the multi-stage transmission assembly 5 includes a driving gear disc 22, a transmission gear disc 23, a fixing frame 24, a transmission shaft 25, a planetary transmission member 26 and a motor 27. The driving gear disc 22 is rotatably arranged on the ventilation and dust reduction pipe 2, the fixing frame 24 is arranged on the inner wall of the ventilation and dust reduction pipe 2, the transmission shaft 25 is rotatably arranged on the fixing frame 24, the transmission gear disc 23 is sleeved and fixed on the transmission shaft 25, the driving gear disc 22 is meshed and connected with the transmission gear disc 23, the planetary transmission member 26 is arranged on the transmission shaft 25, the motor 27 is arranged on the ventilation and dust reduction pipe 2, the output end of the motor 27 is connected to the driving gear disc 22, and the induced fan blade 6 is connected to the transmission shaft 25; The planetary transmission member 26 includes a support rod 28, an outer tooth ring 29, a planetary gear 30, a planetary support 31 and a speed increasing wheel 32. The support rod 28 is arranged on the outer circumferential wall of the transmission shaft 25, the outer tooth ring 29 is arranged on the support rod 28, the planetary support 31 is sleeved and fixed on the fixing frame 24, the planetary gear 30 is rotatably arranged on the planetary support 31, the planetary gear 30 is meshed and connected with the outer tooth ring 29, the speed increasing wheel 32 is arranged at the end of the rotating shaft 9, and the speed increasing wheel 32 is meshed and connected with the planetary gear 30.

[0022] As Figure 1 , Figure 6 , Figure 7 , Figure 8 , Figure 11As shown in the figure, the centrifugal water film breaking and dust removing device 4 includes a multi-stage transmission assembly 5, a draft fan blade 6, a centrifugal water film breaking and atomizing member 7, and a diversion type dust removing and collecting member 8. The multi-stage transmission assembly 5 is arranged on the ventilation and dust removing pipe 2. The draft fan blade 6 is arranged on the multi-stage transmission assembly 5. The centrifugal water film breaking and atomizing member 7 is arranged in the ventilation and dust removing pipe 2. The centrifugal water film breaking and atomizing member 7 is connected to the multi-stage transmission assembly 5. The diversion type dust removing and collecting member 8 is arranged on the ventilation and dust removing pipe 2. The centrifugal water film breaking and atomizing member 7 includes a rotating shaft 9, a centrifugal breaking cylinder 10, and a water supply member 11. The rotating shaft 9 is rotatably arranged on the multi-stage transmission assembly 5. The centrifugal breaking cylinder 10 is sleeved on the rotating shaft 9. The water supply member 11 includes a water tank 15, a uniform water distribution ring cavity 16, a transmission pipe 17, and a water pump 18. The water tank 15 is arranged on the support frame 1. The uniform water distribution ring cavity 16 is sleeved outside the rotating shaft 9. The uniform water distribution ring cavity 16 is not completely arranged in the centrifugal breaking cylinder 10. The intersection of the uniform water distribution ring cavity 16 and the centrifugal breaking cylinder 10 is sealed. Water supply holes 19 are arranged on the circumferential side wall of the uniform water distribution ring cavity 16 inside the centrifugal breaking cylinder 10. The water supply holes 19 are arranged in an annular array. The water pump 18 is arranged on the water tank 15. One end of the transmission pipe 17 penetrates through the ventilation and dust removing pipe 2 and is connected to the uniform water distribution ring cavity 16. The other end of the transmission pipe 17 is connected to the water pump 18. Centrifugal water outlet holes 12 are arranged on the outer circumferential wall of the centrifugal breaking cylinder 10. Drainage type water film breaking tooth plates 13 are arranged at the centrifugal water outlet holes 12. The water in the centrifugal breaking cylinder 10 flows out from the centrifugal water outlet holes 12 through rotation and centrifugation, and flows to the drainage type water film breaking tooth plates 13 for rotational breaking to form water mist, which is mixed and settled with the dust in the coal mine roadway. The drainage type water film breaking tooth plates 13 are arranged in a curved arc shape. A breaking tooth 14 is arranged at one end of the drainage type water film breaking tooth plates 13 away from the centrifugal breaking cylinder 10. The diversion type dust removing and collecting member 8 includes a dust removing and collecting cylinder 20 and a diversion groove 21. The dust removing and collecting cylinder 20 penetrates through the ventilation and dust removing pipe 2 and is arranged on the support frame 1. The diversion groove 21 is arranged on the inner wall of the ventilation and dust removing pipe 2. The diversion groove 21 can divert the particulate matter after atomization and dust removal into the dust removing and collecting cylinder 20.

[0023] As Figure 1 , Figure 11 , Figure 12 shown, the ventilation and dust removing pipe 2 includes an air inlet pipe 37, a collision dust removing and collecting pipe 38, and a clean air accelerating discharge pipe 39. The air inlet pipe 37 is arranged on the support frame 1. The collision dust removing and collecting pipe 38 is hermetically connected to the air inlet pipe 37 through penetration. The clean air accelerating discharge pipe 39 is arranged on the support frame 1. The clean air accelerating discharge pipe 39 is connected to the collision dust removing and collecting pipe 38 through penetration. The clean air accelerating discharge pipe 39 is in a pipe shape with wide ends and a narrow middle. The gas is accelerated when passing through the narrow middle area of the clean air accelerating discharge pipe 39 and can be quickly discharged, further enhancing the dust removal efficiency.

[0024] As Figure 1 , Figure 9 , Figure 10As shown in the figure, the self-cleaning dust filtering device 3 includes a connecting shaft 33, a cleaning ring plate 34, a cleaning brush 35 and a dust filtering net 36. The connecting shaft 33 is connected to the driving gear disk 22, the cleaning ring plate 34 is connected to the connecting shaft 33, the cleaning brush 35 is arranged on the cleaning ring plate 34, the dust filtering net 36 is arranged at the opening of the ventilation and dust reduction pipe 2, and the cleaning brush 35 can periodically clean the dust filtering net 36 to effectively prevent the dust filtering net 36 from being blocked.

[0025] During specific use, start the motor 27. The rotation of the motor 27 drives the rotation of the driving gear disk 22. The rotation of the driving gear disk 22 drives the rotation of the transmission gear disk 23. The rotation of the transmission gear disk 23 drives the rotation of the transmission shaft 25. The rotation of the transmission shaft 25 drives the rotation of the induced fan blade 6. The rotation of the induced fan blade 6 draws the polluted air into the ventilation and dust reduction pipe 2. The large particulate matters in the air are intercepted outside by the dust filtering net 36. At the same time, the rotation of the transmission shaft 25 drives the rotation of the support rod 28. The rotation of the support rod 28 drives the self-rotation of the planet gear 30. The rotation of the planet gear 30 drives the rotation of the speed increasing wheel 32. The rotation of the speed increasing wheel 32 drives the rotation of the rotating shaft 9. The rotation of the rotating shaft 9 drives the centrifugal crushing cylinder 10 to accelerate the rotation. At the same time, start the water pump 18. The water pump 18 transfers the water in the water tank 15 to the transmission pipe 17, and through the transmission pipe 17, it is transferred to the uniform water distribution ring cavity 16, and evenly flows to the inner wall of the centrifugal crushing cylinder 10 through the water supply holes 19 in the uniform water distribution ring cavity 16. Due to the high-speed rotation of the centrifugal crushing cylinder 10, the water can flow out evenly along the centrifugal water outlet holes 12 and flow to the drainage type water film crushing tooth plate 13, and is rapidly crushed by the crushing teeth 14 to form water mist, which collides and mixes with the dust in the coal mine roadway and falls into the dust reduction collection cylinder 20 along the diversion groove 21. The air after dust reduction treatment is quickly discharged through the clean air acceleration discharge pipe 39, further enhancing the dust reduction efficiency. While the driving gear disk 22 rotates, it drives the rotation of the connecting shaft 33. The rotation of the connecting shaft 33 drives the rotation of the cleaning ring plate 34. The rotation of the cleaning ring plate 34 drives the rotation of the cleaning brush 35. The rotation of the cleaning brush 35 can clean the particulate matters adhering to the dust filtering net 36 to effectively prevent the dust filtering net 36 from being blocked. The above is the specific working process of the present invention, and this step can be repeated during the next use.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the foregoing and their equivalents.

[0028] The present invention and its embodiments have been described above. Such description is not restrictive. Only one of the embodiments of the present invention is shown in the drawings, and the actual structure is not limited thereto. In general, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural modes and embodiments without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A ventilation and dust reduction device for coal mine roadways, characterized in that: It includes a support frame (1), a ventilation and dust reduction pipe (2), a self-cleaning dust filtering device (3) and a centrifugal water film breaking and dust reduction device (4). The ventilation and dust reduction pipe (2) is arranged on the support frame (1), the centrifugal water film breaking and dust reduction device (4) is arranged in the ventilation and dust reduction pipe (2), and the self-cleaning dust filtering device (3) is connected to the centrifugal water film breaking and dust reduction device (4). The centrifugal water film breaking and dust reduction device (4) includes a multi-stage transmission component (5), an induced fan blade (6), a centrifugal water film breaking and atomizing component (7) and a diversion type dust reduction and collection component (8). The multi-stage transmission component (5) is arranged on the ventilation and dust reduction pipe (2), the induced fan blade (6) is arranged on the multi-stage transmission component (5), the centrifugal water film breaking and atomizing component (7) is arranged in the ventilation and dust reduction pipe (2), the centrifugal water film breaking and atomizing component (7) is connected to the multi-stage transmission component (5), and the diversion type dust reduction and collection component (8) is arranged on the ventilation and dust reduction pipe (2).

2. The coal mine roadway ventilation and dust reduction device according to claim 1, characterized in that: The centrifugal water film breaking and atomizing component (7) includes a rotating shaft (9), a centrifugal breaking cylinder (10) and a water supply component (11). The rotating shaft (9) is rotatably arranged on the multi-stage transmission component (5), the centrifugal breaking cylinder (10) is sleeved on the rotating shaft (9), the water supply component (11) includes a water tank (15), a uniform water distribution ring cavity (16), a transmission pipe (17) and a water pump (18). The water tank (15) is arranged on the support frame (1), the uniform water distribution ring cavity (16) is sleeved outside the rotating shaft (9), the uniform water distribution ring cavity (16) is not completely arranged in the centrifugal breaking cylinder (10), the intersection of the uniform water distribution ring cavity (16) and the centrifugal breaking cylinder (10) is sealed, water supply holes (19) are arranged on the circumferential side wall of the uniform water distribution ring cavity (16) in the centrifugal breaking cylinder (10), the water supply holes (19) are arranged in an annular array, the water pump (18) is arranged on the water tank (15), one end of the transmission pipe (17) penetrates through the ventilation and dust reduction pipe (2) and is connected to the uniform water distribution ring cavity (16), and the other end of the transmission pipe (17) is connected to the water pump (18).

3. The coal mine roadway ventilation and dust reduction device according to claim 2, characterized in that: Centrifugal water outlet holes (12) are arranged on the outer circumferential wall of the centrifugal breaking cylinder (10), and a diversion type water film breaking tooth plate (13) is arranged at the centrifugal water outlet holes (12).

4. The coal mine roadway ventilation and dust reduction device according to claim 3, characterized in that: The diversion type water film breaking tooth plate (13) is arranged in a curved arc shape, and a breaking tooth (14) is arranged at one end of the diversion type water film breaking tooth plate (13) far away from the centrifugal breaking cylinder (10).

5. The coal mine roadway ventilation and dust reduction device according to claim 4, characterized in that: The diversion type dust reduction and collection component (8) includes a dust reduction and collection cylinder (20) and a diversion groove (21). The dust reduction and collection cylinder (20) penetrates through the ventilation and dust reduction pipe (2) and is arranged on the support frame (1), and the diversion groove (21) is arranged on the inner wall of the ventilation and dust reduction pipe (2).

6. The coal mine roadway ventilation and dust reduction device according to claim 5, wherein: The multi-stage transmission assembly (5) includes a driving gear disc (22), a transmission gear disc (23), a fixing frame (24), a transmission shaft (25), a planetary transmission member (26) and a motor (27). The driving gear disc (22) is rotatably arranged on the ventilation and dust reduction pipe (2). The fixing frame (24) is arranged on the inner wall of the ventilation and dust reduction pipe (2). The transmission shaft (25) is rotatably arranged on the fixing frame (24). The transmission gear disc (23) is sleeved and fixed on the transmission shaft (25). The driving gear disc (22) is meshed and connected with the transmission gear disc (23). The planetary transmission member (26) is arranged on the transmission shaft (25). The motor (27) is arranged on the ventilation and dust reduction pipe (2). The output end of the motor (27) is connected with the driving gear disc (22). The induced fan blade (6) is connected with the transmission shaft (25).

7. The coal mine roadway ventilation and dust reduction device according to claim 6, characterized in that: The planetary transmission member (26) includes a support rod (28), an external tooth ring (29), a planetary gear (30), a planetary support (31) and a speed increasing wheel (32). The support rod (28) is arranged on the outer circumferential wall of the transmission shaft (25). The external tooth ring (29) is arranged on the support rod (28). The planetary support (31) is sleeved and fixed on the fixing frame (24). The planetary gear (30) is rotatably arranged on the planetary support (31). The planetary gear (30) is meshed and connected with the external tooth ring (29). The speed increasing wheel (32) is arranged at the end of the rotating shaft (9). The speed increasing wheel (32) is meshed and connected with the planetary gear (30).

8. The coal mine roadway ventilation and dust reduction device according to claim 7, characterized in that: The self-cleaning dust filtering device (3) includes a connecting shaft (33), a cleaning ring plate (34), a cleaning brush (35) and a dust filtering net (36). The connecting shaft (33) is connected with the driving gear disc (22). The cleaning ring plate (34) is connected with the connecting shaft (33). The cleaning brush (35) is arranged on the cleaning ring plate (34). The dust filtering net (36) is arranged at the opening of the ventilation and dust reduction pipe (2).

9. The coal mine roadway ventilation and dust reduction device according to claim 8, wherein: The ventilation and dust reduction pipe (2) includes an air inlet pipe (37), a collision dust reduction and collection pipe (38) and a clean air accelerated discharge pipe (39). The air inlet pipe (37) is arranged on the support frame (1). The collision dust reduction and collection pipe (38) is hermetically connected with the air inlet pipe (37) in a penetrating manner. The clean air accelerated discharge pipe (39) is arranged on the support frame (1). The clean air accelerated discharge pipe (39) is connected with the collision dust reduction and collection pipe (38) in a penetrating manner. The clean air accelerated discharge pipe (39) is a pipe type with wide ends and a narrow middle part.

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