A multi-stage dust removal device and method for coal mine roadway impact resistance

Abstract

This application relates to the technical field of dust removal, and in particular to a multi-stage dust removal device and method for coal mine roadways with impact resistance. The device includes an upward-opening water tank with an outlet on the side. A rotating shaft is rotatably mounted on the bottom of the water tank via a bearing. A cavity for air passage is formed inside the rotating shaft. A pushing mechanism is installed on the part of the rotating shaft located inside the water tank, and a pre-treatment mechanism that cooperates with the cavity is installed on the top of the rotating shaft. The pushing disc and the fan-shaped plate cooperate 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. This creates an unobstructed channel for gas diffusion. That is, when the water surface is kept clean and unobstructed, the gas can escape from the water surface more smoothly, the separation efficiency of impurities and gas is significantly improved, and thus the dust removal effect of the gas is greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of dust removal, and in particular to a multi-stage dust removal device and method for coal mine roadways that is resistant to impact. Background Technology

[0002] In coal mine roadway mining, dust in the roadway environment not only poses a serious threat to the health and safety of workers, but also increases the maintenance cost of the roadway 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 CN221373652U discloses a dust removal and purification vehicle for coal mine tunneling, including a vehicle body, a water tank, and a dust separation box. The dust separation box is divided into a dust removal chamber and a separation chamber by a vertical partition. The separation chamber contains purified water, and the top wall of the dust removal chamber is equipped with nozzles. The vertical partition connects the two chambers through a duct pipe and is equipped with a first fan. The dust removal chamber is connected to a suction pipe with a suction hood at the front end and a second fan mounted on the pipe. The upper end of the separation chamber is connected to a gas collection tank via a gas collecting pipe, with a third fan mounted on the pipe. This device integrates dust removal and gas collection functions, solving the problems of traditional equipment being unable to collect gas, leading to danger and energy waste.

[0004] In the existing technology for dust removal in coal mine roadways, the oxygen and carbon dioxide in the inhaled gas are dissolved by water in the separation chamber, forming bubbles in the water. Dust particles then come into contact with the water along with these bubbles and are dissolved and adsorbed. However, this technology still has the following drawbacks: due to factors such as differences in dust density, some dust particles float on the water surface. Over time, the thickness of the dust accumulation on the water surface gradually increases, forming a barrier film. This significantly increases the resistance to the upward movement of the bubbles, making it difficult for them to escape smoothly from the water surface, affecting gas diffusion, and ultimately impacting the equipment's dust removal efficiency.

[0005] Therefore, the aforementioned methods for dust removal inside coal mine roadways need to be improved. Summary of the Invention

[0006] To solve the above-mentioned technical problems, this application provides a multi-stage dust removal device and method for coal mine roadways with impact resistance, adopting the following technical solution:

[0007] In a first aspect, a multi-stage dust removal device for coal mine roadways with impact resistance includes an upward-opening water tank with a water outlet on its side. A rotating shaft is rotatably mounted on the bottom of the water tank via a bearing. A cavity for air passage is formed inside the rotating shaft. A pushing mechanism is installed on the portion of the rotating shaft located inside the water tank. A pretreatment mechanism that cooperates with the cavity is installed on the top of the rotating shaft. Wherein:

[0008] Push notification providers include:

[0009] A push disk is fitted onto a rotating shaft and moves along the length of the rotating shaft. Multiple sector-shaped grooves are evenly distributed on the push disk along its circumference.

[0010] Multiple sector plates are provided and set on the rotating shaft, and each corresponds to a sector slot.

[0011] A drive component, mounted on a rotating shaft, is used to drive the push disk to move along the length of the rotating shaft.

[0012] Preferably, the pretreatment mechanism includes a fixed frame installed on the top of the water storage tank in an L-shape, with the vertical section of the fixed frame installed on the top of the water storage tank, a collection tube installed through the horizontal section of the fixed frame, and the top end of the rotating shaft installed at the bottom of the collection tube via a bearing, with a collection component installed at the end of the collection tube away from the rotating shaft.

[0013] Preferably, the collection assembly includes a collection frame that is connected through the collection tube, an automatically resetting annular frame that is slidably positioned inside the collection frame, a screening screen is provided inside the annular frame, a connecting protrusion is provided on the annular frame, a fixing protrusion is provided on the outer wall of the collection frame, an elastic telescopic rod for resetting the annular frame is installed between the fixing protrusion and the connecting protrusion, and a drive unit that drives the annular frame to reciprocate is also provided on the rotating shaft.

[0014] Preferably, the drive unit includes a cam disk mounted on a rotating shaft, and a linkage frame mounted on an annular frame, with the end of the linkage frame away from the annular frame abutting against the cam disk.

[0015] Preferably, the bottom of the circumferential surface of the rotating shaft is provided with two exhaust pipes that are connected to the cavity. Multiple exhaust holes are evenly opened on the exhaust pipes along their length direction, and the two exhaust pipes are coaxial. Two sets of stirring rods corresponding to the exhaust pipes are provided on the rotating shaft along the length direction of the exhaust pipes, and multiple stirring rods are evenly installed along the length direction of the rotating shaft.

[0016] Preferably, the drive assembly includes a lifting cylinder mounted on a rotating shaft via a threaded connection, a pusher disc mounted in the lifting cylinder, a rotating cylinder rotatably mounted on the lifting cylinder, a sector plate mounted on the rotating cylinder, a lifting plate slidably mounted on the upper limit of the vertical section of the fixed frame, and the rotating cylinder rotatably mounted on the lifting plate.

[0017] Preferably, a drive motor is mounted on the lifting plate via a motor mount, and the output shaft of the drive motor is connected to the rotating cylinder via a belt drive. A fixed block is provided at the top of the rotating cylinder, and a blocking block that cooperates with the fixed block is provided on the circumference of the lifting cylinder.

[0018] Preferably, the fan-shaped plate has a plurality of through holes for drainage evenly distributed along its radial direction.

[0019] Preferably, a fixed protrusion is provided on the outer wall of the water storage tank, and a horizontally arranged telescopic elastic rod is installed on the fixed protrusion. A scraper that cooperates with the push disc and is used to clean impurities floating on the water surface is installed on the telescopic end of the telescopic elastic rod via a connecting rod.

[0020] Secondly, a multi-stage dust removal method for coal mine roadways with impact resistance is provided, the dust removal method comprising the following steps:

[0021] S1: Water filling process, pour water into the water storage tank until the water submerges the push disc.

[0022] S2: Ventilation treatment, by collecting the round tube and the cavity to pump air into the bottom of the water, the air is washed in the water, so that large particles of impurities in the air remain in the water.

[0023] S3: Pushing process. When impurities on the water surface accumulate to a certain thickness, the pushing disk moves upward and pushes the impurities on the water surface upward.

[0024] S4: Collection and processing. After the impurities on the water surface are removed from the water surface, the impurities on the pusher disc are collected and processed in a unified manner.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The pusher disc and fan-shaped plate designed in this invention can push floating impurities on the water surface upwards, effectively removing floating impurities and preventing them from forming a barrier film on the water surface. This creates an unobstructed channel for gas diffusion. In other words, when the water surface is kept clean and unobstructed, the gas can escape from the water surface more smoothly, significantly improving the separation efficiency of impurities and gas, and thus greatly improving the dust removal effect of the gas.

[0027] 2. The stirring rod designed in this invention can generate high-intensity shear force and turbulence effect during the stirring process, forcing large bubbles to rapidly split into countless tiny bubbles. These small-diameter bubbles significantly increase the gas-liquid contact surface area, allowing the particulate pollutants in the gas to come into more full contact with water, achieving efficient separation through physicochemical processes such as dissolution and adsorption. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0029] Figure 2 This is a schematic diagram of the three-dimensional installation structure between the fixed frame, the collection frame, and the collection tube of the present invention.

[0030] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the water storage tank of the present invention.

[0031] Figure 4This 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.

[0032] Figure 5 This is the present invention. Figure 4 A magnified view of part A.

[0033] Figure 6 This is the present invention. Figure 4 A magnified view of section B.

[0034] Figure 7 This is a schematic diagram of the three-dimensional installation structure between the pusher disc, fan-shaped plate, and scraper of the present invention.

[0035] Figure 8 This is a flowchart of the coal mine roadway impact-resistant multi-stage dust removal method of the present invention.

[0036] Explanation of reference numerals in the attached drawings: 1. Water storage 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. Drive motor; 27. Fixed block; 28. Blocking block; 3. Pushing mechanism; 31. Pushing disc; 32. Sector groove; 33. Sector plate; 331. Through hole; 34. Drive assembly; 4. Pretreatment mechanism; 41. Fixed frame; 42. Collection pipe; 43. Collection assembly; 431. Collection frame; 432. Ring frame; 433. Screening screen; 434. Elastic telescopic rod; 436. Drive unit; 437. Cam plate; 438. Linkage frame. Detailed Implementation

[0037] The following is in conjunction with the appendix Figures 1 to 8 This application will be described in further detail.

[0038] This application discloses a multi-stage dust removal device and method for coal mine roadways, which can perform graded dust removal on the air inside the coal mine roadway by combining pretreatment blocking and pushing floating impurities, effectively reducing the dust content of the air inside the coal mine roadway.

[0039] Example 1:

[0040] Reference Figure 1 A coal mine roadway impact-resistant multi-stage dust removal device includes an upward-opening water tank 1, an outlet 11 on the side of the water tank 1, a rotating shaft 2 rotatably mounted on the bottom of the water tank 1 via a bearing, a cavity for air passage inside the rotating shaft 2, a pushing mechanism 3 installed on the part of the rotating shaft 2 located inside the water tank 1, and a pretreatment mechanism 4 that cooperates with the cavity installed on the top of the rotating shaft 2.

[0041] The outlet 11 is blocked by the existing sealing plug (not shown in the figure), and water is poured into the water storage tank 1 so that the water submerges the pushing mechanism 3.

[0042] Reference Figure 2 In order to reduce the entry of large impurities into the water storage tank 1 and cause blockage of the device, the pretreatment mechanism 4 provided by the present invention can isolate some large impurities in advance. Specifically, the pretreatment mechanism 4 includes a fixed frame 41 with an L-shaped structure installed on the top of the water storage tank 1. The vertical section of the fixed frame 41 is installed on the top of the water storage tank 1, and a collection tube 42 is installed through the horizontal section of the fixed frame 41. The top end of the rotating shaft 2 is installed at the bottom of the collection tube 42 through a bearing. A collection component 43 is installed at the end of the collection tube 42 away from the rotating shaft 2.

[0043] The collection assembly 43 includes a collection frame 431 that is connected through the collection tube 42. The collection frame 431 is equipped with an automatically resetting annular frame 432 that is slidably limited inside the collection frame 431. A screening screen 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 collection frame 431. An elastic telescopic rod 434 for resetting the annular frame 432 is installed between the fixing protrusion 12 and the connecting protrusion. A drive part 436 that drives the annular frame 432 to move back and forth is also provided on the rotating shaft 2.

[0044] The drive unit 436 includes a cam disk 437 mounted on the rotating shaft 2, and a linkage frame 438 mounted on the annular frame 432. The end of the linkage frame 438 away from the annular frame 432 abuts against the cam disk 437.

[0045] The collecting pipe 42 is equipped with an air pump for adsorbing air inside the coal mine roadway, which is common knowledge and will not be described in detail. In specific operation, the invention is moved to the inside of the coal mine roadway, the water storage tank 1 is fixed on the ground of the coal mine roadway, 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 pipe 42. At this time, the gas inside the coal mine roadway enters the collecting pipe 42 through the collecting frame 431, and the gas enters the cavity through the collecting pipe 42.

[0046] Reference Figure 3 Two exhaust pipes 21 are provided at the bottom of the circumferential surface of the rotating shaft 2 and are connected to the cavity. Multiple exhaust holes are evenly opened on the exhaust pipes 21 along their length direction, and the two exhaust pipes 21 are coaxial. Two sets 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 multiple stirring rods 22 are evenly installed along the length direction of the rotating shaft 2.

[0047] The stirring rod 22 is a thin round rod structure. In actual operation, the external drive motor 26 drives the rotating shaft 2 to rotate via belt drive. Since the drive motor 26 and belt drive are common knowledge, they will not be described in detail. During the rotation of the rotating shaft 2, the exhaust pipe 21 rotates around the rotating shaft 2. Since there is water inside the water storage 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 through the exhaust pipe 21. When the water inside the cavity is emptied, the gas inside the cavity is discharged from the exhaust port through the exhaust pipe 21 during the rotation of the exhaust pipe 21. At this time, the gas enters the water inside the water storage tank 1 to form bubbles and perform washing.

[0048] The stirring rods 22 are symmetrically arranged along the center of the rotating shaft 2, and the two sets of stirring rods 22 and the exhaust pipes 21 on the corresponding side are located on the same vertical plane. During the rotation of the rotating shaft 2, the exhaust pipes 21 can evenly disperse the gas in various positions of the water storage tank 1 to ensure the uniformity of gas-water contact. When the gas forms bubbles in the water, the two sets of stirring rods 22, which are symmetrically arranged in the center, form intersecting cutting surfaces in the water after rotating one revolution. Thus, the stirring rods 22 can cut the bubbles in the gas.

[0049] After forming in the water, the bubbles eventually escape from the water surface and are discharged back into the coal mine tunnels.

[0050] During the stirring process, the stirring rod 22 can generate high-intensity shear force and turbulence effect, which forces large bubbles to rapidly split into countless tiny bubbles. These small-diameter bubbles significantly increase the gas-liquid contact surface area, allowing the particulate pollutants in the gas to come into more full contact with water and achieve efficient separation through physicochemical processes such as dissolution and adsorption.

[0051] Furthermore, the centrally symmetrically arranged stirring rods 22 agitate the water flow, causing the water to flow in a turbulent and irregular manner. This turbulent effect ensures that small-diameter bubbles are in full contact with the water, thereby significantly improving the gas washing and purification effect.

[0052] The cam disk 437 includes a circular disk mounted on the rotating shaft 2. The side wall of the circular disk is equipped with multiple circumferentially evenly distributed arc-shaped protrusions. In specific operation, when the gas flows into the collection frame 431, large impurities in the gas are blocked by the screening screen 433 and remain on the side of the screening screen 433 away from the rotating shaft 2. During the rotation of the rotating shaft 2, the cam disk 437 is driven to rotate. During the rotation of the cam disk 437, the arc-shaped protrusions on its side wall abut against the linkage frame 438 until the linkage frame 438 moves to the end 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 ring frame 432 moves synchronously. During the movement of the ring frame 432, the screening screen 433 moves synchronously. The elastic telescopic rod 434 is stretched. During the movement of the screening screen 433, the impurities on its surface are thrown outward by inertia, thereby pre-treating and blocking large impurities in the air.

[0053] When the linkage frame 438 moves from the end of the arc-shaped protrusion to the side wall of the circular disc, the elastic telescopic rod 434 resets and drives the annular frame 432 and the screening screen 433 to reset through the connecting protrusion. At this time, the rotating shaft 2 continues to rotate and repeats the above action. In this way, the annular frame 432 can drive the screening screen 433 to move back and forth. During the reciprocating movement of the screening screen 433, inertia is used to pre-treat and block large impurities in the air, so as to prevent large impurities from entering the water storage tank 1 and causing the device to be blocked.

[0054] During the movement of the screening mesh 433, the inertial force it generates is much greater than the adsorption force that causes impurities to move into the collection frame 431 due to the pressure difference. This mechanical property ensures that when impurities are thrown to the outside of the collection frame 431 under inertia, they will not re-adhere to the surface of the screening mesh 433 due to adsorption force.

[0055] Impurities separated by inertial force vibration screening are adsorbed by an external vacuum cleaner (not shown in the figure) to prevent impurities from falling into the water storage tank 1.

[0056] Reference Figures 3 to 6 Push mechanism 3 includes:

[0057] The push disk 31 is fitted onto the rotating shaft 2 and moves along the length of the rotating shaft 2. Multiple sector-shaped grooves 32 are evenly opened on the push disk 31 along its circumference.

[0058] Multiple sector plates 33 are provided and are arranged on the rotating shaft 2, and each corresponds to a sector groove 32.

[0059] The drive assembly 34 is mounted on the rotating shaft 2 and is used to drive the push disk 31 to move along the length of the rotating shaft 2.

[0060] The drive assembly 34 includes a lifting cylinder 23 mounted on the rotating shaft 2 via a threaded connection, and a pusher disc 31 is mounted in the lifting cylinder 23. A rotating cylinder 24 is rotatably mounted on the lifting cylinder 23, and a fan-shaped plate 33 is mounted on the rotating cylinder 24. A lifting plate 25 is slidably mounted on the upper limit of the vertical section of the fixed frame 41, and the rotating cylinder 24 is rotatably mounted on the lifting plate 25.

[0061] A drive motor 26 is mounted on the lifting plate 25 via a motor mount. The output shaft of the drive motor 26 is connected to the rotating cylinder 24 via a belt drive. A fixing block 27 is provided on the top of the rotating cylinder 24, and a blocking block 28 that cooperates with the fixing block 27 is provided on the circumferential surface of the lifting cylinder 23.

[0062] Multiple through holes 331 for drainage are evenly provided along the radial direction of the fan-shaped plate 33.

[0063] The water level is above the push disc 31 at the starting position, and the lifting cylinder 23 is also equipped with a reference protrusion. At the starting position, the fixed block 27 is in contact with the reference protrusion. During operation, the air 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 stops rotating 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 through the belt drive. 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 stops rotating due to the blocking block 28. During this process, the rotating cylinder 24 drives the fan-shaped plate 33 to block the fan-shaped groove 32, and the fan-shaped groove 32 is closed. At this time, the output shaft of the drive motor 26 continues to rotate and drives the lifting cylinder 23 to rotate through the belt drive in cooperation with the rotating cylinder 24.

[0064] During the rotation of the lifting cylinder 23, it moves upward synchronously through a threaded connection. Since the threaded connection is a basic common knowledge in this field, it will not be described in detail. During the rotation of the lifting cylinder 23, it moves upward synchronously, which in turn drives the pushing disc 31 and the sector plate 33 to move upward. When the pushing disc 31 and the sector plate 33 move to the water surface, the impurities on the water surface fall onto the pushing disc 31 and the sector plate 33. At this time, the pushing disc 31 continues to move, driving the impurities out of the water storage tank 1.

[0065] Furthermore, the pusher disc 31 and the fan-shaped plate 33 work together to push floating impurities on the water surface upwards, effectively removing floating impurities and preventing them from forming a barrier film on the water surface, thus creating an unobstructed channel for gas diffusion.

[0066] By combining the pretreatment of large impurities by the screening screen 433 with the pushing disc 31 to push floating impurities, the air inside the coal mine roadway can be graded and dusted, effectively reducing the dust content of the air inside the coal mine roadway.

[0067] After the impurities on the push disc 31 are cleaned, the output shaft of the drive motor 26 reverses. During the reversal, the output shaft of the drive motor 26 drives the rotating cylinder 24 to rotate through belt drive until the fixed block 27 is in contact with the reference protrusion. At this time, the sector groove 32 reopens, and the output shaft of the drive motor 26 continues to rotate, thereby driving the lifting cylinder to reverse and move down until the push disc 31 is reset. By repeating the above actions, the floating impurities inside the water storage tank 1 can be cleaned.

[0068] During the upward movement of the pusher disc 31, when it is not in contact with impurities on the water surface, the through hole 331 can guide the water flow and reduce the resistance when the pusher disc 31 moves upward. When the pusher disc 31 comes into contact with impurities on the water surface, the pusher disc 31 drives the impurities to leave the water surface. After the impurities leave the water surface, the through hole 331 can guide the water on the pusher disc 31, so that the water on the pusher disc 31 is separated from the impurities. This avoids the possibility that after the water and impurities are moved out of the water storage tank 1 at the same time during the pushing process, the water will carry the impurities to drift randomly and fall back into the water storage tank 1.

[0069] The fixed block 27 cooperates with the reference protrusion and the blocking block 28 to keep the lifting plate 25 and the rotating cylinder 24 relatively stationary during the lifting and lowering process of the pushing disc 31. 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 to ensure that the pushing disc 31 can only move in the vertical direction and cannot deviate during the lifting and lowering process.

[0070] When the water in storage tank 1 is nearly saturated with dissolved impurities, the sealing plug can be opened to drain the water. At this time, the rotating shaft 2 continues to rotate, causing the exhaust pipe 21 to move in a circular motion. During this rotation, the exhaust pipe 21 stirs the impurities deposited at the bottom of the tank, causing them to disperse evenly in the water and be discharged with the water flow. Simultaneously, the gas discharged from the exhaust pipe 21 further agitates the impurities deposited at the bottom, enhancing their dissolution in the water through airflow, ensuring that the impurities at the bottom of the tank are fully dissolved and discharged.

[0071] Example 2: Refer to Figure 7 Based on Embodiment 1, the scraper 14 provided by the present invention can clean impurities on the push disk 31. 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. A scraper 14 that cooperates with the push disk 31 and is used to clean impurities floating on the water surface is installed on the telescopic end of the telescopic elastic rod 13 through a connecting rod.

[0072] In actual operation, when the pusher disc 31 and the fan-shaped plate 33 move the impurities upward and out of the water storage tank 1, the pusher disc 31 comes into contact with the scraper 14. At this time, the telescopic spring rod is stretched. During the rotation of the pusher disc 31, the impurities are rotated. The scraper 14 intercepts and gathers the impurities near the scraper 14 through the blocking effect. Finally, they are collected and processed manually. This design eliminates the step of deliberately gathering impurities on the surface of the pusher disc 31, effectively simplifying the operation process.

[0073] Finally, refer to Figure 8 The present invention also provides a multi-stage dust removal method for coal mine roadways with impact resistance, comprising the following steps:

[0074] S1: Water filling process, pouring water into the water storage tank 1 so that the water submerges the push disc 31.

[0075] S2: Ventilation is performed and the air pump is started. The air pump creates a pressure difference between the inside and outside of the collection frame 431 through the collection pipe 42. At this time, the gas inside the coal mine roadway enters the collection pipe 42 through the collection frame 431. The gas enters the cavity through the collection pipe 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. The gas enters the water inside the water storage tank 1 to form bubbles and wash. At this time, the ring frame 432 can drive the screening screen 433 to move back and forth. During the reciprocating movement of the screening screen 433, inertia is used to pre-treat and block large impurities in the air.

[0076] S3: Pushing process. During the rotation of the lifting cylinder 23, it moves upward synchronously. As the lifting cylinder 23 moves upward, it drives the pushing disc 31 and the fan-shaped plate 33 to move upward. When the pushing disc 31 and the fan-shaped plate 33 move to the water surface, the 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, driving the impurities out of the water storage tank 1.

[0077] S4: Collection and processing. After the impurities on the water surface are removed from the water surface, the impurities on the pusher disc 31 are collected and processed in a unified manner.

[0078] 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 implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0079] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-stage dust removal device for coal mine roadways with impact resistance, comprising an upward-opening water tank (1), with a water outlet (11) on the side of the water 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 air passage is provided inside the rotating shaft (2). Two exhaust pipes (21) connected to the cavity are provided on the bottom of the circumferential surface of the rotating shaft (2). Multiple exhaust holes are evenly provided along the length of each exhaust pipe (21). Two sets of stirring rods (22) corresponding to the exhaust pipes (21) are provided on the rotating shaft (2) along the length of each exhaust pipe (21). A pushing mechanism (3) is installed on the part of the rotating shaft (2) located inside the water storage tank (1), wherein the pushing mechanism (3) includes: The push disk (31) is fitted on the rotating shaft (2) and moves along the length of the rotating shaft (2). Multiple fan-shaped grooves (32) are evenly opened on the push disk (31) along its circumference. Multiple sector plates (33) are provided and are set on the rotating shaft (2), and correspond one-to-one with the sector grooves (32); The drive assembly (34) is set on the rotating shaft (2) to drive the push disk (31) to move along the length direction of the rotating shaft (2). It includes a fixed block (27) and a blocking block (28) to cooperate in realizing the rotation limit and vertical lifting linkage of the push disk (31). A pretreatment mechanism (4) that matches the cavity is installed on the top of the rotating shaft (2); 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). A scraper (14) that cooperates with the push disc (31) and is used to clean impurities floating on the water surface is installed on the telescopic end of the telescopic elastic rod (13) through a connecting rod.

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

3. The multi-stage dust removal device for coal mine roadways with impact resistance according to claim 2, characterized in that: The collection assembly (43) includes a collection frame (431) that is connected through the collection tube (42). The collection frame (431) is equipped with an automatically resetting ring frame (432) that is slidably limited inside. The ring frame (432) is equipped with a screening screen (433). The ring frame (432) is equipped with a connecting protrusion. The outer wall of the collection frame (431) is equipped with a fixing protrusion (12). The fixing protrusion (12) and the connecting protrusion are jointly installed with an elastic telescopic rod (434) for resetting the ring frame (432). The rotating shaft (2) is also equipped with a drive unit (436) that drives the ring frame (432) to move back and forth.

4. The multi-stage dust removal device for coal mine roadways with impact resistance according to claim 3, characterized in that: The drive unit (436) includes a cam disk (437) mounted on a rotating shaft (2), and a linkage frame (438) mounted on an annular frame (432). The end of the linkage frame (438) away from the annular frame (432) abuts against the cam disk (437).

5. The multi-stage dust removal device for coal mine roadways with impact resistance according to claim 1, characterized in that: The two exhaust pipes (21) are coaxial, and multiple stirring rods (22) are evenly installed along the length of the rotation axis (2).

6. The multi-stage dust removal device for coal mine roadways with impact resistance according to claim 1, characterized in that: The drive assembly (34) includes a lifting cylinder (23) mounted on the rotating shaft (2) via a threaded connection, and a pusher disc (31) is mounted in the lifting cylinder (23). A rotating cylinder (24) is rotatably mounted on the lifting cylinder (23), and a fan-shaped plate (33) is mounted on the rotating cylinder (24). A lifting plate (25) is slidably mounted on the upper limit of the vertical section of the fixed frame (41), and the rotating cylinder (24) is rotatably mounted on the lifting plate (25).

7. The multi-stage dust removal device for coal mine roadways according to claim 6, characterized in that: A drive motor (26) is mounted on the lifting plate (25) via a motor mount. The output shaft of the drive motor (26) is connected to the rotating cylinder (24) via a belt drive. A fixed block (27) is located on the top of the rotating cylinder (24), and a blocking block (28) that cooperates with the fixed block (27) is located on the circumferential surface of the lifting cylinder (23).

8. The multi-stage dust removal device for coal mine roadways with impact resistance according to claim 1, characterized in that: The fan-shaped plate (33) has multiple through holes (331) evenly distributed along its radial direction for drainage.

9. A method for multi-stage dust removal in coal mine roadways, comprising a multi-stage dust removal device for coal mine roadways as described in any one of claims 1-8, characterized in that, Its usage includes the following steps: S1: Water filling process, pour water into the water storage tank (1) so that the water submerges the push disc (31); S2: Ventilation treatment, by collecting the round tube (42) and the cavity to pump air into the bottom of the water, the air is washed in the water, so that large particulate 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 disk (31) moves upward and pushes the impurities on the water surface upward. S4: Collection and processing. After the impurities on the water surface are removed from the water surface, the impurities on the push disc (31) are collected and processed in a unified manner.

Images