Comprehensive dust prevention device for fully mechanized excavation face based on dust isolation

Abstract

The invention relates to the technical field of comprehensive dust prevention of mines, and particularly discloses a comprehensive dust prevention device for a fully mechanized excavation face based on dust isolation, which comprises an isolation frame, an opening and closing door for opening and closing and a conveying channel for mounting a conveying belt are respectively arranged on two sides below the isolation frame, and an adsorption channel is arranged above the isolation frame. A filter grid plate is arranged in the opening and closing door; l-shaped water conveying pipes are fixedly installed on the two sides of the opening and closing door, the outer sides of the vertically-downward ends of the water conveying pipes are sleeved with rotating pipes, the upper ends and the lower ends of the rotating pipes are rotationally and hermetically connected with the water conveying pipes, and nozzles are arranged on the outer sides of the rotating pipes. A driving part is fixedly installed on the opening and closing door, an adjusting frame is slidably installed above the rotating pipe, a tooth row is arranged at the other end of the adjusting frame, and a gear meshed with the tooth row is fixedly installed on the outer side of the rotating pipe; according to the invention, the opening and closing door can be closed in time after a person passes, and the nozzle for spraying water mist is opened synchronously, so that dust diffusion is efficiently and conveniently prevented.

Description

Technical Field

[0001] This invention relates to the field of integrated dust control technology in mines, specifically to an integrated dust control device for fully mechanized tunneling faces based on dust isolation. Background Technology

[0002] When tunneling machinery is operating, dust particles generated by the fractured rock mass will quickly spread throughout the working face and tunnel air, forming a high-concentration dust environment. This type of dust not only seriously deteriorates the working environment, reduces on-site visibility, and affects construction safety and efficiency, but also poses a direct threat to the respiratory health of construction workers. Long-term exposure can lead to occupational diseases such as pneumoconiosis. In addition, suspended dust may also cause safety accidents such as explosions, posing a major hidden danger to mine safety production.

[0003] Currently, the industry generally adopts a comprehensive dust control approach that combines multiple methods for dust control at tunneling faces. For example, fixed or rotating spray devices are installed near the cutting head of the tunneling machine and at transfer points, where dust is concentrated. The water mist particles collide with and agglomerate with the dust to achieve settling. At the same time, some form of shield or windbreak is set up behind the working face to try to isolate the dust-generating area from the work area behind it and prevent dust from spreading. However, openings must be left for the passage of materials and personnel, and dust will still escape from the openings, greatly reducing the isolation effect. Summary of the Invention

[0004] Technical problems to be solved To address the aforementioned shortcomings of existing technologies, this invention provides a comprehensive dust control device for tunneling faces based on dust isolation. This device effectively solves the problem that existing technologies, in order to isolate dust, require the installation of certain forms of shields or windbreaks behind the working face to separate the dust-generating area from the rear work area and prevent dust diffusion. However, openings must be left for the passage of materials and personnel, and dust can still escape from these openings, resulting in poor dust isolation effectiveness.

[0005] Technical solution To achieve the above objectives, the present invention provides the following technical solution: This invention provides a comprehensive dust control device for tunneling faces based on dust isolation, including an isolation frame, a switch door for opening and closing is provided below the isolation frame, and a filter mesh plate is provided inside the switch door; Both sides of the switch door are fixedly installed with L-shaped water supply pipes. A rotating pipe is sleeved on the outside of the vertically downward end of the water supply pipe. Both the upper and lower ends of the rotating pipe are rotatably sealed to the water supply pipe. A nozzle for spraying water mist is provided on the outside of the rotating pipe. An adjustment frame is slidably mounted above the rotating tube. One end of the adjustment frame is used to switch the filter mesh plate on and off, and the other end of the adjustment frame is provided with a toothed rack. A gear that meshes with the toothed rack is fixedly mounted on the outside of the rotating tube. When the adjustment frame moves toward the rotating tube, it closes the nozzle on the outside of the rotating tube and at the same time drives the filter mesh plate to open.

[0006] Furthermore, a driving component is fixedly installed on one side of the switch door, and a linkage frame is slidably installed thereon. The telescopic end of the driving component is fixedly installed on the linkage frame. The driving component is used to drive the linkage frame to slide horizontally toward or away from the switch door. A connecting rod is rotatably installed on one end of the linkage frame, and the other end of the connecting rod is rotatably connected to the filter mesh plate. The other end of the linkage frame extends below the adjustment frame.

[0007] Furthermore, a protruding column is fixedly installed below the adjusting frame, and a strip-shaped through hole is provided on the linkage frame that fits on the outside of the protruding column. When the linkage frame slides toward the rotating tube, the inner wall of the strip-shaped through hole abuts against the protruding column, causing the adjusting frame to move toward the rotating tube, thereby causing the rotating tube to rotate.

[0008] Furthermore, the rotating tube has multiple horizontal tubes spaced vertically on one side facing the center of the switch door, and each horizontal tube has a vertical tube at the other end. The nozzles are distributed on the outside of the horizontal and vertical tubes.

[0009] Furthermore, multiple sleeves are fitted on the outer side of the water supply pipe, and a drainage hole is opened on one side of each sleeve. The drainage hole communicates with the inside of the water supply pipe. A connecting part is fixedly installed inside the horizontal pipe. A connecting hole is provided in the connecting part corresponding to the position of the drainage hole. The side of the connecting part facing the sleeve is tightly attached to the outer wall of the sleeve.

[0010] Furthermore, the nozzle includes a first nozzle and a second nozzle. The first nozzle is installed on the side of the vertical pipe away from the rotating pipe, and the second nozzle is located on both sides of the first nozzle. A first connecting pipe and a second connecting pipe are respectively provided on the connecting through hole where the two central axes are located at the same horizontal height. The first connecting pipe and the second connecting pipe are respectively connected to a plurality of second nozzles and a plurality of first nozzles.

[0011] Furthermore, a fixed bucket is fixedly installed at the lower end of the water supply pipe directly below the rotating pipe, and a plane bearing is fixedly installed at the upper end of the fixed bucket, with the upper end of the plane bearing supporting the lower part of the rotating pipe.

[0012] Furthermore, a connecting part is fixedly installed on the outer side of the switch door, and the connecting part is provided with multiple mounting through holes. The connecting part is used to fix the switch door on the isolation frame by bolts.

[0013] Furthermore, the filter mesh plate is provided in two sets and is located on both sides inside the switch door respectively. The ends of the two sets of filter mesh plates that are far apart from each other are rotatably connected to the switch door, and the ends of the two sets of filter mesh plates that are close to each other are slidably connected to the switch door. Each set of filter mesh plates includes two filter plates that are rotatably connected to each other.

[0014] Furthermore, a blocking plate is slidably installed above the conveying channel, and the blocking plate is used to adjust the vertical height of the conveying channel.

[0015] Beneficial effects The technical solution provided by this invention has the following advantages compared with known public technologies: (1) The present invention provides a switch door on the isolation frame for workers and small machinery to pass through. Rotating tubes are installed on both sides of the switch door. When workers need to pass through the switch door, the driving component will drive the adjusting frame to move towards the rotating tube, so that the two sets of filter mesh plates open. At the same time, the adjusting frame drives the rotating tube to rotate, so that the nozzles on the outside of the rotating tube are closed. At this time, workers can safely pass through the switch door. After the workers pass through the switch door, the driving component will drive the adjusting frame to move away from the rotating tube, so that the two sets of filter mesh plates move closer to each other and close. At the same time, the rotating tube rotates and resets, so that the switch door can be closed in time and the nozzles spraying water mist can be opened simultaneously, which effectively and conveniently prevents dust diffusion.

[0016] (2) In this invention, after the first nozzle and the second nozzle are closed at the same time, the first nozzle will spray water mist again after the rotating tube is rotated to a certain angle. By changing the spray angle of the water mist, the effective area of ​​the dust-reducing water mist is increased, and the dust diffused out through the opening and closing of the door is further reduced. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall back structure of the present invention; Figure 3 This is a schematic diagram of the overall structure of the opening and closing door of the present invention; Figure 4 This is a schematic diagram of the door opening / closing state adjustment structure of the present invention; Figure 5 This is a schematic diagram of the overall installation structure of the adjustment frame of the present invention; Figure 6 This is a schematic diagram of the bottom structure of the adjustment frame of the present invention; Figure 7 This is a cross-sectional view of the rotating tube of the present invention; Figure 8 This is the external mounting structure for the water supply pipe of the present invention.

[0019] The labels in the diagram represent: 1. Isolation frame; 101. Conveying channel; 11. Adsorption channel; 12. Sealing plate; 2. Door opening and closing; 21. Connecting part; 22. Filter mesh plate; 23. Driving component; 24. Linkage frame; 2401. Strip-shaped through hole; 3. Rotating pipe; 31. Horizontal pipe; 32. Vertical pipe; 321. First nozzle; 322. Second nozzle; 33. Gear; 34. First connecting pipe; 35. Second connecting pipe; 36. Connecting part; 37. Fixed barrel; 38. Surface bearing; 4. Adjusting frame; 41. Protruding column; 42. Toothed row; 5. Water supply pipe; 51. Sleeve; 5101. Drainage through hole. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] The present invention will be further described below with reference to embodiments.

[0022] Example: A comprehensive dust control device for tunneling faces based on dust isolation, such as... Figure 1 - Figure 8As shown, the system includes an isolation frame 1. On the lower sides of the isolation frame 1 are respectively provided opening and closing doors 2 and a conveyor channel 101 for installing a conveyor belt. A sealing plate 12 is slidably installed above the conveyor channel 101, used to adjust the vertical height of the conveyor channel 101 to accommodate conveyors of different heights. An adsorption channel 11 is provided above the isolation frame 1. In actual use, an adsorption pipe is inserted into the adsorption channel 11. The adsorption pipe draws dust-laden air into the ventilation duct, purifies it through an internal filter, and then discharges it, adsorbing dust from the tunneling face and preventing dust generated during mining from spreading between the tunneling face and the isolation frame 1. The outer side of the opening and closing doors 2 is fixed. A connecting part 21 is installed, and the connecting part 21 is provided with multiple mounting through holes. The connecting part 21 is used to fix the switch door 2 to the isolation frame 1 by bolts. A filter mesh plate 22 is provided inside the switch door 2. Two sets of filter mesh plates 22 are provided and located on opposite sides inside the switch door 2. The ends of the two sets of filter mesh plates 22 that are far apart are rotatably connected to the switch door 2, and the ends of the two sets of filter mesh plates 22 that are close together are slidably connected to the switch door 2. Each set of filter mesh plates 22 includes two filter plates that are rotatably connected. When one filter plate closer to the switch door 2 is pulled to rotate, it will drive the other filter plate in the same set to rotate, causing the other end of the other filter plate to slide towards both sides of the switch door 2, thereby opening the switch door 2 (e.g., ...). Figure 4 As shown in the image, staff can easily enter and exit at this time; L-shaped water supply pipes 5 are fixedly installed on both sides of the switch door 2. A rotating pipe 3 is sleeved on the outer side of the vertically downward end of the water supply pipe 5. Both the upper and lower ends of the rotating pipe 3 are rotatably and sealingly connected to the water supply pipe 5. The seal between the water supply pipe 5 and the rotating pipe 3 can be achieved using a mature mechanical seal assembly or a combination seal ring (such as an O-ring plus a seal). A fixed bucket 37 is fixedly installed at the lower end of the water supply pipe 5 directly below the rotating pipe 3. A plane bearing 38 is fixedly installed at the upper end of the fixed bucket 37. The upper end of the plane bearing 38 is supported below the rotating pipe 3. A screw threaded to the water supply pipe 5 is provided at the lower part of the fixed bucket 37. The fixing bucket 37 is fixed to the bottom of the water supply pipe 5 by bolts. The plane bearing 38 above the fixing bucket 37 can support the bottom of the rotating pipe 3 and prevent the rotating pipe 3 from sliding downward under the action of gravity. The rotating pipe 3 is provided with a nozzle for spraying water mist on the outside. Multiple horizontal pipes 31 are arranged vertically at intervals on the side of the rotating pipe 3 facing the middle of the switch door 2. Each horizontal pipe 31 is provided with a vertical pipe 32 at the other end. The nozzles are distributed on the outside of the horizontal pipes 31 and the vertical pipes 32. Multiple nozzles distributed on the horizontal pipes 31 and the vertical pipes 32 can generate water mist at different heights to effectively reduce dust. A drive component 23 is fixedly installed on the switch door 2. An adjustment frame 4 is slidably installed above the rotating tube 3. The drive component 23 is used to drive the adjustment frame 4 to slide between the rotating tube 3 and the switch door 2. One end of the adjustment frame 4 is used to switch the filter mesh plate 22. The other end of the adjustment frame 4 is provided with a toothed rack 42. A gear 33 that meshes with the toothed rack 42 is fixedly installed on the outside of the rotating tube 3. When the adjustment frame 4 moves toward the rotating tube 3, it closes the nozzle on the outside of the rotating tube 3 and at the same time drives the filter mesh plate 22 to open. The filter mesh plate 22 can adopt a multi-layer design: the outer layer is a rigid metal mesh (such as stainless steel wire mesh, mesh number 20-40) for support and primary filtration; the inner layer can be covered with replaceable non-woven filter material or wet filter felt to improve the adsorption capacity of fine dust. The rotating connection can use a bearing hinge with a sealing ring.

[0023] In an embodiment of the present invention, a switch door 2 for workers and small machinery to pass through is provided on the isolation frame 1. Rotating pipes 3 are rotatably installed on both sides of the switch door 2. When workers need to pass through the switch door 2, the driving component 23 will drive the adjusting frame 4 to move towards the rotating pipe 3. At this time, the adjusting frame 4 will drive the two sets of filter mesh plates 22 to move away from each other. At the same time, the gear rack 42 on the adjusting frame 4 will drive the gear 33 to rotate, so that the rotating pipe 3 rotates synchronously, and the nozzles on the outside of the rotating pipe 3 are closed. At this time, it is safe to pass through the switch door 2. After the workers pass through the switch door 2, the driving component 23 will drive the adjusting frame 4 to move away from the rotating pipe 3, so that the two sets of filter mesh plates 22 move closer to each other and close. At the same time, the rotating pipe 3 rotates and resets, which can close the switch door 2 in time and open the spray nozzles of water mist simultaneously, effectively and conveniently preventing dust diffusion.

[0024] It should be noted that the drive component 23 can be, but is not limited to, any of the following: electric actuator: the model can be selected according to the thrust and stroke, such as IP65 protection rating, with built-in limit switch. The control end can be connected to the working face PLC system to realize remote or automatic control; cylinder: using mine compressed air as the power source, it needs to be equipped with a speed regulating valve and magnetic switch to control speed and position; hydraulic cylinder: if there is a hydraulic system on the working face, a small cylinder can be used, which needs to be equipped with a reversing valve.

[0025] To achieve more consistent and synchronized control of the opening / closing door 2 and the rotating pipe 3, this embodiment features a sliding linkage frame 24 mounted on one side of the opening / closing door 2. The telescopic end of the driving component 23 is fixedly mounted on the linkage frame 24. The driving component 23 drives the linkage frame 24 to slide horizontally towards or away from the opening / closing door 2. A connecting rod is rotatably mounted on one end of the linkage frame 24, and the other end of the connecting rod is rotatably connected to the filter mesh plate 22. The other end of the linkage frame 24 extends below the adjusting frame 4, providing support to the lower part of the adjusting frame 4 and ensuring smooth sliding of the adjusting frame 4 on one side of the opening / closing door 2. In actual use, a support rod can be installed on one side of the opening / closing door 2 to support the upper half of the water supply pipe 5. The adjusting frame 4 is slidably mounted below the support rod. Figure 3 As shown.

[0026] A protruding column 41 is fixedly installed below the adjusting frame 4. The linkage frame 24 is provided with a strip-shaped through hole 2401 fitted on the outside of the protruding column 41. The setting of the strip-shaped through hole 2401 allows the stroke of the linkage frame 24 to be longer than that of the adjusting frame 4. Because in actual use, the specifications of the filter mesh plate 22 inside the opening and closing door 2 may be different, the length of the strip-shaped through hole 2401 can be adjusted according to the actual situation. When the linkage frame 24 slides toward the rotating tube 3, the inner wall of the strip-shaped through hole 2401 abuts against the protruding column 41, causing the adjusting frame 4 to move toward the rotating tube 3, thereby causing the rotating tube 3 to rotate. This allows the linkage frame 24 to move in tandem with the adjusting frame 4, thereby allowing the rotation angle of the rotating tube 3 to be adjusted synchronously.

[0027] To more specifically achieve the goal of closing multiple nozzles on the outer side when the rotating pipe 3 rotates from its initial state, this embodiment also provides multiple sleeves 51 on the outer side of the water supply pipe 5. The outer wall of the sleeve 51 is rotatably and sealingly connected to the inner wall of the rotating pipe 3. The end face seal between the sleeve 51 and the connecting part 36 can be made of wear-resistant engineering plastic (such as polytetrafluoroethylene) or copper alloy to ensure low friction and good sealing during rotation. Each sleeve 51 has a drainage hole 5101 on one side, which is connected to the inside of the water supply pipe 5. Water inside the water supply pipe 5 can enter the port of the horizontal pipe 31 through the drainage hole 5101. A connecting part 36 is fixedly installed inside the sleeve 51. The connecting part 36 is provided with a connecting hole corresponding to the position of the drain hole 5101. Each drain hole 5101 corresponds to each connecting hole. The side of the connecting part 36 facing the sleeve 51 is tightly attached to the outer wall of the sleeve 51, so that water can only enter the connecting hole through the drain hole 5101 and will not flow into the gap between the connecting part 36 and the sleeve 51. After the rotating pipe 3 rotates, the connecting part 36 will rotate synchronously with the rotating pipe 3, so that the drain hole 5101 and the connecting hole are misaligned. At this time, the water is blocked inside the water supply pipe 5, and the nozzle will not spray atomized water to avoid wetting the passing staff. The above embodiment achieves dust suppression by closing the nozzles at the initial stage of the rotation of the rotating pipe 3. To allow the rotating pipe 3 to still spray a small amount of water mist at the initial stage of rotation, a larger-area dust suppression spray can be performed before closing the nozzles. In this embodiment, the nozzles include a first nozzle 321 and a second nozzle 322. The first nozzle is installed on the side of the vertical pipe 32 away from the rotating pipe 3, and the second nozzle 322 is located on both sides of the first nozzle 321. The first nozzle 321 sprays water mist onto the side of the vertical pipe 32 away from the rotating pipe 3, increasing the effective area of ​​the water mist (horizontally). The second nozzle 322 sprays water mist onto both sides of the vertical pipe 32 facing or away from the switch door 2, increasing the thickness of the water mist area (vertically). The two central axes are located at the same horizontal height. The connecting holes are respectively provided with a first connecting pipe 34 and a second connecting pipe 35. The first connecting pipe 34 and the second connecting pipe 35 are respectively connected to a plurality of second nozzles 322 and a plurality of first nozzles 321. In the initial stage when the opening of the second connecting pipe 35 follows the rotation of the rotating pipe 3, the opening of the second connecting pipe 35 will pass through another drainage hole 5101 and align with it. At this time, the water flow inside the drainage hole 5101 will enter the second connecting pipe 35, causing the first nozzle 321 connected to the second connecting pipe 35 to spray water mist again (at this time, the rotating pipe 3 has rotated a certain angle). The dust suppression area can be increased by changing the water mist spraying angle, further reducing the dust diffused out through the opening and closing door 2 during the opening and closing of the door 2.

[0028] The specific working principle is as follows: When staff or small equipment need to pass through the switch door 2, the drive component 23 is activated first, causing the drive component 23 to drive the linkage frame 24 to slide towards the rotating tube 3. At this time, one end of the linkage frame 24 will cause the middle part of the filter mesh plate 22 to bend, so that the inside of the switch door 2 gradually opens from the middle. After the linkage frame 24 moves a certain distance, it will drive the adjustment frame 4 to move synchronously towards the rotating tube 3, so that the gear row 42 on the adjustment frame 4 drives the gear 33 on the rotating tube 3 to rotate. The gear 33 synchronously drives the rotating tube 3 to rotate, so that the horizontal tube 31 on the outside of the rotating tube 3 is adjusted from a state parallel to the isolation frame 1 to a state perpendicular to the isolation frame 1. At the same time, the connecting part 36 inside the horizontal tube 31 will rotate on the outside of the sleeve 51, so that the connecting hole on the connecting part 36 and the drain hole 5101 on the sleeve 51 intersect each other. At this time, the water inside the water supply pipe 5 stops entering the horizontal tube 31 and the vertical tube 32, thereby stopping the nozzle from spraying water mist.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A comprehensive dust control device for a fully mechanized tunneling face based on dust isolation, comprising an isolation frame (1), wherein a switch door (2) for opening and closing is provided below the isolation frame (1), characterized in that, The switch door (2) is equipped with a filter mesh plate (22); Both sides of the switch door (2) are fixedly installed with L-shaped water pipes (5). A rotating pipe (3) is sleeved on the outside of the vertically downward end of the water pipe (5). Both the upper and lower ends of the rotating pipe (3) are rotatably and sealingly connected to the water pipe (5). A nozzle for spraying water mist is provided on the outside of the rotating pipe (3). An adjustment frame (4) is slidably installed above the rotating tube (3). One end of the adjustment frame (4) is used to switch the filter mesh plate (22). The other end of the adjustment frame (4) is provided with a toothed rack (42). A gear (33) that meshes with the toothed rack (42) is fixedly installed on the outside of the rotating tube (3). When the adjustment frame (4) moves toward the rotating tube (3), it closes the nozzle on the outside of the rotating tube (3) and at the same time drives the filter mesh plate (22) to open.

2. The comprehensive dust control device for tunneling faces based on dust isolation as described in claim 1, characterized in that, A drive unit (23) is fixedly installed on one side of the switch door (2), and a linkage frame (24) is slidably installed thereon. The telescopic end of the drive unit (23) is fixedly installed on the linkage frame (24). The drive unit (23) is used to drive the linkage frame (24) to slide horizontally toward or away from the switch door (2). A connecting rod is rotatably installed at one end of the linkage frame (24), and the other end of the connecting rod is rotatably connected to the filter mesh plate (22). The other end of the linkage frame (24) extends to the bottom of the adjustment frame (4).

3. A comprehensive dust control device for tunneling faces based on dust isolation, as described in claim 2, is characterized in that, A protruding column (41) is fixedly installed below the adjusting frame (4). A strip-shaped through hole (2401) is provided on the linkage frame (24) and fitted on the outside of the protruding column (41). When the linkage frame (24) slides toward the rotating tube (3), the inner wall of the strip-shaped through hole (2401) abuts against the protruding column (41) and drives the adjusting frame (4) to move toward the rotating tube (3), thereby causing the rotating tube (3) to rotate.

4. A comprehensive dust control device for tunneling faces based on dust isolation, as described in claim 3, is characterized in that, The rotating tube (3) has multiple horizontal tubes (31) spaced vertically on one side facing the middle of the switch door (2), and each horizontal tube (31) has a vertical tube (32) at the other end. The nozzles are distributed on the outside of the horizontal tubes (31) and the vertical tubes (32).

5. A comprehensive dust control device for tunneling faces based on dust isolation, as described in claim 4, is characterized in that, Multiple sleeves (51) are fitted on the outside of the water supply pipe (5). Each sleeve (51) has a drainage hole (5101) on one side. The drainage hole (5101) is connected to the inside of the water supply pipe (5). A connecting part (36) is fixedly installed inside the horizontal pipe (31). The connecting part (36) has a connecting hole at the position corresponding to the drainage hole (5101). The side of the connecting part (36) facing the sleeve (51) is tightly attached to the outer wall of the sleeve (51).

6. A comprehensive dust control device for tunneling faces based on dust isolation, as described in claim 5, is characterized in that, The nozzle includes a first nozzle (321) and a second nozzle (322). The first nozzle is installed on the side of the vertical pipe (32) away from the rotating pipe (3). The second nozzle (322) is located on both sides of the first nozzle (321). A first connecting pipe (34) and a second connecting pipe (35) are respectively provided on the connecting through hole with the two central axes at the same horizontal height. The first connecting pipe (34) and the second connecting pipe (35) are respectively connected to a plurality of second nozzles (322) and a plurality of first nozzles (321).

7. A comprehensive dust control device for tunneling faces based on dust isolation as described in claim 1, characterized in that, A fixed bucket (37) is fixedly installed at the lower end of the water supply pipe (5) directly below the rotating pipe (3). A plane bearing (38) is fixedly installed at the upper end of the fixed bucket (37). The upper end of the plane bearing (38) is supported below the rotating pipe (3).

8. A comprehensive dust control device for tunneling faces based on dust isolation as described in claim 1, characterized in that, A connecting part (21) is fixedly installed on the outside of the switch door (2). The connecting part (21) is provided with multiple mounting through holes. The connecting part (21) is used to fix the switch door (2) on the isolation frame (1) by bolts.

9. A comprehensive dust control device for tunneling faces based on dust isolation as described in claim 1, characterized in that, The filter mesh plate (22) is provided in two sets and is located on both sides inside the switch door (2). The ends of the two sets of filter mesh plates (22) that are far apart from each other are rotatably connected to the switch door (2), and the ends of the two sets of filter mesh plates (22) that are close to each other are slidably connected to the switch door (2). Each set of filter mesh plates (22) includes two filter plates that are rotatably connected to each other.

10. A comprehensive dust control device for tunneling faces based on dust isolation as described in claim 1, characterized in that, A sealing plate (12) is slidably installed above the conveying channel (101), and the sealing plate (12) is used to adjust the vertical height of the conveying channel (101).

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