Impact-resistant multi-stage dust removal device and method for coal mine tunnel

Abstract

The invention relates to the technical field of dust removal, in particular to a coal mine tunnel anti-impact multistage dust removal device and method.The device comprises a water storage tank with an upward opening, a water outlet is formed in the side edge of the water storage tank, a rotating shaft is rotationally installed at the bottom in the water storage tank through a bearing, and a cavity used for air transition is formed in the rotating shaft; a pushing mechanism is mounted on the part, located in the water storage tank, of the rotating shaft, and a pretreatment mechanism matched with the cavity is mounted at the top of the rotating shaft; the pushing disc and the fan-shaped plate are matched with each other, so that impurities floating on the water surface can be pushed upwards, the floating impurities on the water surface can be effectively removed, a barrier film is prevented from being formed on the water surface, and therefore a barrier-free channel is created for gas diffusion, that is, when the water surface is kept clean and free of barriers, gas can escape from the water surface more smoothly; the separation efficiency of impurities and gas is obviously improved, so that the dust removal effect of the gas is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of dust removal, and in particular to an impact-resistant multi-stage dust removal device and method for coal mine tunnels. Background Art

[0002] During coal mine mining, the dust in the tunnel environment not only poses a serious threat to workers' health and work safety, but also increases the maintenance cost of the tunnel and reduces mining efficiency. Therefore, it is necessary to remove the dust in the air during the coal mining process.

[0003] For example, patent application number CN221373652U discloses a dust removal and purification vehicle for coal mine tunneling. The vehicle comprises a vehicle body, a water tank, and a dust removal and separation box. The dust removal and separation box is divided into a dust removal chamber and a separation chamber by a vertical partition. The separation chamber contains purified water, and a nozzle is located on the top wall of the dust removal chamber. The vertical partition connects the two chambers via an air duct and is equipped with a first fan. The dust removal chamber is connected to an air intake duct, with an air intake hood at the front end and a second fan mounted on the duct. The upper end of the separation chamber is connected to a gas collection tank via a gas collection duct, which is also equipped with a third fan. This device combines dust removal and gas collection functions, resolving the problem of traditional equipment's inability to collect gas, which can lead to dangerous and energy-wasting consequences.

[0004] During the dust removal process in coal mine tunnels, the aforementioned existing technology utilizes water within a separation chamber to dissolve oxygen and carbon dioxide in the inhaled gas. This causes the gas to form bubbles in the water, which then contact the dust particles, dissolving and adsorbing them. However, this technology still suffers from the following drawbacks: due to factors such as differences in dust density, some dust particles float to the water surface. Over time, the dust accumulation on the water surface gradually increases, forming a barrier film. This significantly increases the resistance to the bubbles rising, making it difficult for them to successfully escape the water surface, hindering gas diffusion and ultimately compromising the equipment's dust removal performance.

[0005] Therefore, the above-mentioned dust removal method for the air inside the coal mine tunnel needs to be improved. Summary of the Invention

[0006] In order to solve the above technical problems, the present application provides a coal mine tunnel impact-resistant multi-stage dust removal device and method, which adopts the following technical solutions: In a first aspect, an impact-resistant multi-stage dust removal device for coal mine tunnels includes a water storage tank with an upward opening, a water outlet provided on a side of the water storage tank, a rotating shaft rotatably mounted on the bottom of the water storage tank via a bearing, a cavity for transitioning air provided inside the rotating shaft, a pushing mechanism installed on the portion of the rotating shaft located inside the water storage tank, and a pre-treatment mechanism mounted on the top of the rotating shaft that cooperates with the cavity, wherein: The push agencies include: The pushing disc is sleeved on the rotating shaft and moves along the length direction of the rotating shaft. A plurality of fan-shaped grooves are evenly opened on the pushing disc along its circumference.

[0007] There are multiple fan-shaped plates, which are arranged on the rotating shaft and correspond one-to-one to the fan-shaped grooves.

[0008] The driving assembly is arranged on the rotating shaft and is used to drive the pushing disc to move along the length direction of the rotating shaft.

[0009] Preferably, the pretreatment mechanism includes a fixed frame installed on the top of the water tank and having an L-shaped structure, and the vertical section of the fixed frame is installed on the top of the water tank, a collecting circular pipe is installed through the horizontal section of the fixed frame, and the top of the rotating shaft is installed at the bottom of the collecting circular pipe through a bearing, and a collecting assembly is installed at the end of the collecting circular pipe away from the rotating shaft.

[0010] Preferably, the collecting assembly includes a collecting frame connected to the collecting circular tube, an annular frame with automatic reset is provided inside the collecting frame for limited sliding, a screening net is provided inside the annular frame, a connecting protrusion is provided on the annular frame, a fixed protrusion is provided on the outer wall of the collecting frame, an elastic telescopic rod for resetting the annular frame is jointly installed between the fixed protrusion and the connecting protrusion, and a driving part for driving the annular frame to move back and forth is also provided on the rotating shaft.

[0011] Preferably, the driving part comprises a cam plate mounted on the rotating shaft, a linkage frame is mounted on the annular frame, and one end of the linkage frame away from the annular frame abuts against the cam plate.

[0012] Preferably, two exhaust pipes connected to the cavity are provided at the bottom of the circumferential surface of the rotating shaft, and a plurality of exhaust holes are evenly opened on the exhaust pipes along the length direction thereof, and the two exhaust pipes are coaxial, and two groups of stirring rods corresponding to the exhaust pipes are provided on the rotating shaft along the length direction of the exhaust pipes, and a plurality of stirring rods are evenly installed along the length direction of the rotating shaft.

[0013] Preferably, the driving assembly includes a lifting cylinder installed on the rotating shaft by a threaded connection, and the pushing disc is installed in the lifting cylinder, a rotating cylinder is rotatably provided on the lifting cylinder, and the fan-shaped plate is installed on the rotating cylinder, a lifting plate is rotatably provided on the upper limit sliding of the vertical section of the fixed frame, and the rotating cylinder is rotatably installed on the lifting plate.

[0014] Preferably, a driving motor is installed on the lifting plate through a motor seat, the output shaft of the driving motor is connected to the rotating cylinder through a belt drive, a fixed block is provided on the top of the rotating cylinder, and a blocking block matching the fixed block is provided on the circumferential surface of the lifting cylinder.

[0015] Preferably, a plurality of through holes for drainage are evenly provided on the sector plate along its radial direction.

[0016] Preferably, a fixed protrusion is provided on the outer wall of the water tank, a horizontally arranged telescopic elastic rod is installed on the fixed protrusion, and a scraper that cooperates with the pushing disc and is used to clean impurities floating on the water surface is installed on the telescopic end of the telescopic elastic rod through a connecting rod.

[0017] In a second aspect, a method for multi-stage dust removal in coal mine tunnels is provided, wherein the method comprises the following steps: S1: Filling the water tank with water until the water covers the push disc.

[0018] S2: Ventilation treatment, air is pumped into the bottom of the water through the collection tube and the cavity. The air is washed in the water so that large particles of impurities in the air remain in the water.

[0019] S3: Pushing process: when the impurities on the water surface accumulate to a certain thickness, the pushing disc moves upward and pushes the impurities on the water surface upward.

[0020] S4: Collection and processing: When the impurities on the water surface are separated from the water surface, the impurities on the pushing disc are uniformly collected and processed.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The push disc and fan-shaped plate designed in the present invention cooperate with each other to push impurities floating on the water surface upward, which can effectively remove floating impurities on the water surface and prevent them from forming a barrier film on the water surface, thereby creating an unobstructed channel for gas diffusion. That is, when the water surface remains clean and unobstructed, the gas can escape from the water surface more smoothly, and the separation efficiency of impurities and gas is significantly improved, thereby greatly improving the dust removal effect of the gas.

[0022] 2. The stirring rod designed in the present invention can generate high-intensity shear force and turbulence effect during the stirring process, forcing large bubbles to quickly split into countless tiny bubbles. These small-particle bubbles significantly increase the gas-liquid contact specific surface area, allowing the particulate pollutants to be purified in the gas to come into more complete contact with water, and achieve efficient separation through physical and chemical effects such as dissolution and adsorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the three-dimensional installation structure between the fixed frame, collection frame and collection circular tube of the present invention.

[0025] Figure 3 It is a schematic diagram of the internal three-dimensional structure of the water storage tank of the present invention.

[0026] Figure 4It is a schematic diagram of the three-dimensional installation structure between the lifting plate, the pushing disc and the fan-shaped plate of the present invention.

[0027] Figure 5 This invention Figure 4 A partial enlarged view of point A.

[0028] Figure 6 This invention Figure 4 A partial enlarged view of point B.

[0029] Figure 7 It is a schematic diagram of the three-dimensional installation structure between the pushing disc, the fan-shaped plate and the scraper etc. of the present invention.

[0030] Figure 8 This is a flow chart of the impact-resistant multi-stage dust removal method for coal mine tunnels of the present invention.

[0031] Explanation of the accompanying drawings: 1. Water tank; 11. Water outlet; 12. Fixed protrusion; 13. Telescopic elastic rod; 14. Scraper; 2. Rotating shaft; 21. Exhaust pipe; 22. Stirring rod; 23. Lifting cylinder; 24. Rotating cylinder; 25. Lifting plate; 26. Driving motor; 27. Fixed block; 28. Blocking block; 3. Pushing mechanism; 31. Pushing disc; 32. Fan-shaped groove; 33. Fan-shaped plate; 331. Through hole; 34. Driving assembly; 4. Pretreatment mechanism; 41. Fixed frame; 42. Collecting circular tube; 43. Collecting assembly; 431. Collecting frame; 432. Ring frame; 433. Screening net; 434. Elastic telescopic rod; 436. Driving part; 437. Cam disc; 438. Linkage frame. DETAILED DESCRIPTION

[0032] The following is combined with Figures 1 to 8 This application is described in further detail.

[0033] The embodiment of the present application discloses an impact-resistant multi-stage dust removal device and method for coal mine tunnels. By combining pre-treatment blocking with pushing floating impurities, the air inside the coal mine tunnels can be subjected to graded dust removal treatment, effectively reducing the dust content of the air inside the coal mine tunnels.

[0034] Example 1: Reference Figure 1 A coal mine tunnel impact-resistant multi-stage dust removal device includes a water tank 1 with an upward opening, a water outlet 11 is provided on the side of the water tank 1, a rotating shaft 2 is rotatably installed on the bottom of the water tank 1 through a bearing, a cavity for transitional air is provided inside the rotating shaft 2, a pushing mechanism 3 is installed on the part of the rotating shaft 2 located inside the water tank 1, and a pretreatment mechanism 4 is installed on the top of the rotating shaft 2 that cooperates with the cavity.

[0035] The water outlet 11 is blocked by an existing sealing plug (not shown in the figure), and then water is poured into the water storage tank 1 so that the water covers the pushing mechanism 3.

[0036] Reference Figure 2 In order to reduce the risk of some large impurities entering the water tank 1 and causing blockage of the device, the pretreatment mechanism 4 provided by the present invention can isolate and treat some large impurities in advance. Specifically, the pretreatment mechanism 4 includes a fixed frame 41 installed on the top of the water tank 1 and having an L-shaped structure, and the vertical section of the fixed frame 41 is installed on the top of the water tank 1, and a collecting circular pipe 42 is installed through the horizontal section of the fixed frame 41, and the top end of the rotating shaft 2 is installed at the bottom of the collecting circular pipe 42 through a bearing, and a collecting component 43 is installed at the end of the collecting circular pipe 42 away from the rotating shaft 2.

[0037] The collecting assembly 43 includes a collecting frame 431 which is connected to the collecting circular tube 42. An annular frame 432 with automatic reset is provided inside the collecting frame 431 for sliding movement. A screening net 433 is provided inside the annular frame 432. A connecting protrusion is provided on the annular frame 432. A fixed protrusion 12 is provided on the outer wall of the collecting frame 431. An elastic telescopic rod 434 for resetting the annular frame 432 is installed between the fixed protrusion 12 and the connecting protrusion. A driving part 436 for driving the annular frame 432 to move back and forth is also provided on the rotating shaft 2.

[0038] The driving portion 436 includes a cam plate 437 mounted on the rotating shaft 2 . A linkage frame 438 is mounted on the annular frame 432 . An end of the linkage frame 438 away from the annular frame 432 abuts against the cam plate 437 .

[0039] An air pump for absorbing the air inside the coal mine tunnel is installed on the collecting circular tube 42. This is common knowledge and will not be described in detail. During operation, the present invention is moved to the inside of the coal mine tunnel, and the water storage tank 1 is fixed on the ground of the coal mine tunnel, and the air pump is started. The air pump creates a pressure difference between the inside and outside of the collecting frame 431 through the collecting circular tube 42. At this time, the gas inside the coal mine tunnel enters the collecting circular tube 42 through the collecting frame 431, and the gas enters the cavity through the collecting circular tube 42.

[0040] Reference Figure 3 Two exhaust pipes 21 connected to the cavity are provided at the bottom of the circumference of the rotating shaft 2. A plurality of exhaust holes are evenly opened on the exhaust pipe 21 along its length direction, and the two exhaust pipes 21 are coaxial. Two groups of stirring rods 22 corresponding to the exhaust pipes 21 are provided on the rotating shaft 2 along the length direction of the exhaust pipe 21, and a plurality of stirring rods 22 are evenly installed along the length direction of the rotating shaft 2.

[0041] The stirring rod 22 is a thin round rod structure. During operation, the external driving motor 26 drives the rotating shaft 2 to rotate through a belt transmission method. Since the driving motor 26 and the belt transmission method are existing common knowledge, they are not described in detail. During the rotation of the rotating shaft 2, the exhaust pipe 21 is driven to rotate circumferentially around the rotating shaft 2. Since there is water inside the water tank 1, the water also enters the cavity through the exhaust pipe 21. After the gas continues to enter the cavity, the air pressure inside the cavity discharges the water inside it through the exhaust pipe 21. When the water inside the cavity is emptied, the gas inside the cavity is discharged from the exhaust hole through the exhaust pipe 21 during the rotation of the exhaust pipe 21. At this time, the gas enters the water inside the water tank 1 to form bubbles and wash.

[0042] The stirring rods 22 are symmetrically arranged along the center of the rotating shaft 2, and the two groups of stirring rods 22 and the exhaust pipes 21 on the corresponding sides are located on the same vertical plane. During the rotation of the rotating shaft 2, the exhaust pipes 21 can evenly disperse the gas at various positions of the water tank 1 to ensure the uniformity of the contact between the gas and the water. When the gas forms bubbles in the water, the two groups of stirring rods 22, which are symmetrically arranged along the center, form mutually staggered cutting surfaces in the water after one circle of rotation, so that the stirring rods 22 can cut the bubbles in the gas.

[0043] After the bubbles form in the water, they eventually escape from the surface and return to the coal mine tunnels.

[0044] The stirring rod 22 can generate high-intensity shear force and turbulence effect during the stirring process, forcing large bubbles to quickly split into countless tiny bubbles. These small-particle bubbles significantly increase the gas-liquid contact specific surface area, allowing the particulate pollutants to be purified in the gas to come into more complete contact with water, and achieve efficient separation through physical and chemical effects such as dissolution and adsorption.

[0045] Furthermore, the centrally symmetrically arranged stirring rod 22 stirs the water flow, causing the water flow to present an irregular and turbulent state. This turbulent effect ensures that small-sized bubbles are fully in contact with the water, thereby significantly improving the scrubbing and purification effect of the gas.

[0046] The cam disc 437 includes a circular disc installed on the rotating shaft 2, and the side wall of the circular disc is installed with multiple arc-shaped protrusions evenly distributed in the circumference. During specific operation, when the gas flows to the inside of the collection frame 431, the large impurities in the gas are blocked by the screening mesh 433 and remain on the side of the screening mesh 433 away from the rotating shaft 2. The rotation of the rotating shaft 2 drives the cam disc 437 to rotate. During the rotation of the cam disc 437, the arc-shaped protrusion on its side wall abuts against the linkage frame 438 until the linkage frame 438 moves to the end point of the arc-shaped protrusion. At this time, the linkage frame 438 moves to the side away from the rotating shaft 2. During the movement of the linkage frame 438, the annular frame 432 is driven to move synchronously. At this time, the annular frame 432 drives the screening mesh 433 to move synchronously during its movement. The elastic telescopic rod 434 is stretched, and the screening mesh 433 uses inertia to throw out the impurities on its surface during its movement, thereby pre-treating and blocking large impurities in the air.

[0047] When the linkage frame 438 moves from the end point of the arc-shaped protrusion to the side wall of the circular disk, the elastic telescopic rod 434 is reset and drives the annular frame 432 and the screening net 433 to reset through the connecting protrusion. At this time, the rotating shaft 2 continues to rotate and repeats the above action, so that the annular frame 432 can drive the screening net 433 to move back and forth. During the reciprocating movement of the screening net 433, inertia is used to pre-treat and block large impurities in the air to prevent large impurities from entering the water tank 1 and causing blockage of the device.

[0048] During the movement of the sieve 433, the inertial force generated by it is much greater than the adsorption force that causes the impurities to move toward the interior of the collection frame 431 due to the pressure difference. This mechanical characteristic ensures that when impurities are thrown to the outside of the collection frame 431 due to inertia, they will not reattach to the surface of the sieve 433 due to adsorption force.

[0049] The impurities separated by inertial force vibration are adsorbed by an external dust collector (not shown in the figure) to prevent the impurities from falling into the water storage tank 1.

[0050] Reference Figures 3 to 6 , the push mechanism 3 includes: The pushing disc 31 is sleeved on the rotating shaft 2 and moves along the length direction of the rotating shaft 2. A plurality of fan-shaped grooves 32 are evenly formed on the pushing disc 31 along its circumference.

[0051] There are multiple sector plates 33 provided on the rotating shaft 2 and corresponding to the sector slots 32 one by one.

[0052] The driving assembly 34 is disposed on the rotating shaft 2 and is used to drive the pushing disc 31 to move along the length direction of the rotating shaft 2 .

[0053] The driving assembly 34 includes a lifting cylinder 23 installed on the rotating shaft 2 by a threaded connection, and the pushing disc 31 is installed in the lifting cylinder 23. A rotating cylinder 24 is rotatably provided on the lifting cylinder 23, and the fan-shaped plate 33 is installed on the rotating cylinder 24. A lifting plate 25 is slidably provided on the upper limit position of the vertical section of the fixed frame 41, and the rotating cylinder 24 is rotatably installed on the lifting plate 25.

[0054] A driving motor 26 is installed on the lifting plate 25 through a motor seat. The output shaft of the driving motor 26 is connected to the rotating cylinder 24 through a belt drive. A fixed block 27 is provided on the top of the rotating cylinder 24, and a blocking block 28 that cooperates with the fixed block 27 is provided on the circumferential surface of the lifting cylinder 23.

[0055] The sector plate 33 is provided with a plurality of through holes 331 evenly distributed along its radial direction for drainage.

[0056] The water submerges the pushing disc 31 at the starting position, and a reference protrusion is also provided on the lifting cylinder 23. When in the starting position, the fixed block 27 fits with the reference protrusion. During specific operation, the bubbles formed at the bottom of the water tank 1 float to the water surface through the fan-shaped groove 32. When the impurities on the water surface reach a certain thickness, the rotating shaft 2 no longer rotates, and the drive motor 26 is started. During the rotation of the output shaft of the drive motor 26, the rotating cylinder 24 is driven to rotate by a belt transmission. During the rotation of the rotating cylinder 24, the fixed block 27 is disengaged from the reference protrusion and rotates. When the fixed block 27 contacts the blocking block 28, the rotating cylinder 24 no longer rotates due to the obstruction of the blocking block 28. During this process, the rotating cylinder 24 drives the fan-shaped plate 33 to block the fan groove 32, and the fan groove 32 is closed. At this time, the output shaft of the drive motor 26 continues to rotate and cooperates with the rotating cylinder 24 to drive the lifting cylinder 23 to rotate.

[0057] During the rotation of the lifting cylinder 23, it moves upward synchronously through a threaded connection. Since the threaded connection is basic common sense in this field, it will not be described in detail. The lifting cylinder 23 moves upward synchronously during the rotation, and then the lifting cylinder 23 drives the pushing disc 31 and the fan-shaped plate 33 to move upward during the upward movement. When the pushing disc 31 and the fan-shaped plate 33 move up to the water surface, impurities on the water surface fall onto the pushing disc 31 and the fan-shaped plate 33. At this time, the pushing disc 31 continues to move to drive the impurities out of the water tank 1.

[0058] Furthermore, the pushing disc 31 and the fan-shaped plate 33 cooperate with each other to push the impurities floating on the water surface upward, which can effectively remove the floating impurities on the water surface and prevent them from forming a barrier film on the water surface, thereby creating an unobstructed channel for gas diffusion.

[0059] Therefore, the air inside the coal mine tunnel can be subjected to graded dust removal treatment by combining the screening net 433 to pre-treat and block large impurities and the pushing disc 31 to push floating impurities, thereby effectively reducing the dust content of the air inside the coal mine tunnel.

[0060] After the impurities on the pushing disc 31 are cleaned, the output shaft of the driving motor 26 is reversed. During the reversal of the output shaft of the driving motor 26, the rotating cylinder 24 is driven to rotate by the belt transmission until the fixed block 27 is in contact with the reference protrusion. At this time, the fan-shaped groove 32 is reopened, and the output shaft of the driving motor 26 continues to rotate, thereby driving the lifting cylinder to reverse and move downward until the pushing disc 31 is reset. The above actions are repeated to clean the floating impurities inside the water tank 1.

[0061] When the pushing disc 31 moves upward and does not come into contact with impurities on the water surface, the through hole 331 can divert the water, reducing the resistance of the pushing disc 31 when moving upward. When the pushing disc 31 comes into contact with impurities on the water surface, the pushing disc 31 drives the impurities away from the water surface. After the impurities are away from the water surface, the through hole 331 can divert the water on the pushing disc 31, so that the water and impurities on the pushing disc 31 are separated, avoiding the possibility that the water and impurities are simultaneously moved out of the water storage tank 1 during the pushing process, and the water drives the impurities to float randomly and then fall back into the water storage tank 1.

[0062] The fixed block 27 cooperates with the reference protrusion and the blocking block 28 so that the lifting plate 25 and the rotating cylinder 24 remain relatively stationary during the lifting of the pushing disc 31, and the pushing disc 31 and the rotating cylinder 24 remain relatively stationary. Furthermore, the lifting plate 25 and the fixed frame 41 cooperate with each other so that the pushing disc 31 can only move in the vertical direction and cannot deviate during the lifting process.

[0063] When the water in water tank 1 nears saturation with dissolved impurities, the sealing plug can be opened to drain the accumulated water. Rotating shaft 2 then continuously rotates, driving exhaust pipe 21 in a circular motion. This rotation creates a stirring force on impurities deposited at the bottom of the tank, evenly dispersing them throughout the water and allowing them to be discharged with the current. Simultaneously, the gas discharged from exhaust pipe 21 further disturbs the impurities deposited at the bottom, enhancing their dissolution in the water through the impact of the airflow, ensuring that the impurities at the bottom of the tank are fully dissolved and discharged.

[0064] Example 2: Reference Figure 7 On the basis of the first embodiment, the scraper 14 provided by the present invention can clean the impurities on the pushing disc 31. A fixed protrusion 12 is provided on the outer wall of the water tank 1, and a horizontally arranged telescopic elastic rod 13 is installed on the fixed protrusion 12. The telescopic end of the telescopic elastic rod 13 is equipped with a scraper 14 that cooperates with the pushing disc 31 and is used to clean impurities floating on the water surface through a connecting rod.

[0065] During specific operation, when the pushing disc 31 and the fan-shaped plate 33 drive the impurities to move up and out of the water tank 1, the pushing disc 31 contacts the scraper 14. At this time, the telescopic spring rod is stretched. At this time, the pushing disc 31 drives the impurities to rotate during rotation, and the scraper 14 intercepts the impurities through the blocking effect and gathers them near the scraper 14. Finally, they are collected and processed manually. This design eliminates the step of deliberately gathering impurities on the surface of the pushing disc 31, effectively simplifying the operation process.

[0066] Finally, refer to Figure 8 The present invention also provides a method for anti-impact multi-stage dust removal in coal mine tunnels, comprising the following steps: S1: Water filling process, pouring water into the water storage tank 1 so that the water covers the pushing disc 31.

[0067] S2: Ventilation treatment, and start the air pump. The air pump creates a pressure difference inside and outside the collecting frame 431 through the collecting circular tube 42. At this time, the gas inside the coal mine tunnel enters the collecting circular tube 42 through the collecting frame 431, and the gas enters the cavity through the collecting circular tube 42. During the rotation of the exhaust pipe 21, the gas inside the cavity is discharged from the exhaust hole through the exhaust pipe 21. At this time, the gas enters the water inside the water tank 1 to form bubbles and is washed. At this time, the annular frame 432 can drive the screening net 433 to move back and forth. During the reciprocating movement of the screening net 433, inertia is used to pre-treat and block large impurities in the air.

[0068] S3: Pushing process, the lifting cylinder 23 moves upward synchronously during the rotation, and then the lifting cylinder 23 drives the pushing disc 31 and the fan-shaped plate 33 to move upward during the upward movement. When the pushing disc 31 and the fan-shaped plate 33 move up to the water surface, the impurities on the water surface fall on the pushing disc 31 and the fan-shaped plate 33. At this time, the pushing disc 31 continues to move to drive the impurities out of the water tank 1.

[0069] S4: Collection and processing: When the impurities on the water surface are separated from the water surface, the impurities on the pushing disc 31 are uniformly collected and processed.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0071] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A multi-stage dust removal device for coal mine tunnels, comprising a water storage tank (1) with an upward opening, a water outlet (11) provided on the side of the water storage tank (1), characterized in that: A rotating shaft (2) is rotatably mounted on the bottom of the water storage tank (1) via a bearing. A cavity for transitional air is provided inside the rotating shaft (2). A pushing mechanism (3) is mounted on the portion of the rotating shaft (2) located inside the water storage tank (1). A pre-processing mechanism (4) that cooperates with the cavity is mounted on the top of the rotating shaft (2), wherein: The pushing mechanism (3) comprises: A pushing disc (31) is sleeved on the rotating shaft (2) and moves along the length direction of the rotating shaft (2). A plurality of fan-shaped grooves (32) are evenly formed on the pushing disc (31) along its circumference. A plurality of sector plates (33) are provided and arranged on the rotating shaft (2) and correspond one-to-one to the sector grooves (32); The driving assembly (34) is arranged on the rotating shaft (2) and is used to drive the pushing disc (31) to move along the length direction of the rotating shaft (2).

2. The impact-resistant multi-stage dust removal device for coal mine tunnels according to claim 1, characterized in that: The pretreatment mechanism (4) comprises an L-shaped fixed frame (41) installed on the top of the water storage tank (1), wherein the vertical section of the fixed frame (41) is installed on the top of the water storage tank (1), a collecting circular pipe (42) is installed through the horizontal section of the fixed frame (41), and the top end of the rotating shaft (2) is installed at the bottom of the collecting circular pipe (42) through a bearing, and a collecting assembly (43) is installed at the end of the collecting circular pipe (42) away from the rotating shaft (2).

3. The impact-resistant multi-stage dust removal device for coal mine tunnels according to claim 2, characterized in that: The collecting assembly (43) comprises a collecting frame (431) which is connected to the collecting circular tube (42); an annular frame (432) which is automatically reset is provided in a limited sliding manner inside the collecting frame (431); a screening net (433) is provided inside the annular frame (432); a connecting protrusion is provided on the annular frame (432); a fixing protrusion (12) is provided on the outer wall of the collecting frame (431); an elastic telescopic rod (434) for resetting the annular frame (432) is installed between the fixing protrusion (12) and the connecting protrusion; and a driving part (436) for driving the annular frame (432) to move back and forth is also provided on the rotating shaft (2).

4. The impact-resistant multi-stage dust removal device for coal mine tunnels according to claim 3, characterized in that: The driving part (436) includes a cam plate (437) mounted on the rotating shaft (2); a linkage frame (438) is mounted on the annular frame (432); and one end of the linkage frame (438) away from the annular frame (432) abuts against the cam plate (437).

5. The impact-resistant multi-stage dust removal device for coal mine tunnels according to claim 1, characterized in that: Two exhaust pipes (21) are provided at the bottom of the circumferential surface of the rotating shaft (2) and are connected to the cavity. A plurality of exhaust holes are evenly provided on the exhaust pipes (21) along the length direction thereof, and the two exhaust pipes (21) are coaxial. Two groups of stirring rods (22) corresponding to the exhaust pipes (21) are provided on the rotating shaft (2) along the length direction of the exhaust pipes (21), and a plurality of stirring rods (22) are evenly installed along the length direction of the rotating shaft (2).

6. The impact-resistant multi-stage dust removal device for coal mine tunnels according to claim 1, characterized in that: The driving assembly (34) includes a lifting cylinder (23) mounted on the rotating shaft (2) by a threaded connection, and a pushing disc (31) is mounted in the lifting cylinder (23), a rotating cylinder (24) is rotatably arranged on the lifting cylinder (23), and a sector plate (33) is mounted on the rotating cylinder (24), and a lifting plate (25) is slidably arranged on the upper limit position of the vertical section of the fixed frame (41), and the rotating cylinder (24) is rotatably mounted on the lifting plate (25).

7. The impact-resistant multi-stage dust removal device for coal mine tunnels according to claim 6, characterized in that: A driving motor (26) is mounted on the lifting plate (25) via a motor seat. The output shaft of the driving motor (26) is connected to the rotating cylinder (24) via a belt transmission. A fixing block (27) is provided on the top of the rotating cylinder (24). A blocking block (28) that matches the fixing block (27) is provided on the circumferential surface of the lifting cylinder (23).

8. The impact-resistant multi-stage dust removal device for coal mine tunnels according to claim 1, characterized in that: A plurality of through holes (331) for drainage are evenly provided on the sector plate (33) along its radial direction.

9. The impact-resistant multi-stage dust removal device for coal mine tunnels according to claim 1, characterized in that: A fixed protrusion (12) is provided on the outer wall of the water storage tank (1), a horizontally arranged telescopic elastic rod (13) is installed on the fixed protrusion (12), and a scraper (14) is installed on the telescopic end of the telescopic elastic rod (13) through a connecting rod and is matched with a pushing disc (31) and used for cleaning impurities floating on the water surface.

10. A method for impact-resistant multi-stage dust removal in coal mine tunnels, comprising the impact-resistant multi-stage dust removal device for coal mine tunnels according to any one of claims 1 to 9, characterized in that: The method of use includes the following steps: S1: water filling process, pouring water into the water storage tank (1) so that the water covers the push disc (31); S2: ventilation treatment, air is pumped into the bottom of the water through the collection tube (42) in conjunction with the cavity, and the air is washed in the water so that large particles of impurities in the air remain in the water; S3: Pushing process, when the impurities on the water surface accumulate to a certain thickness, the pushing disc (31) moves upward and pushes the impurities on the water surface upward; S4: Collection and processing: when the impurities on the water surface are separated from the water surface, the impurities on the pushing disc (31) are uniformly collected and processed.

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