A closed dust removal device for coal mines

Abstract

The invention discloses a closed dust removal device for coal mines, comprising a sealing mechanism, a walking mechanism, a suction mechanism, a filtering mechanism and a spraying mechanism; the walking mechanism comprises a fixed plate and four walking wheels; a filtering mechanism is fixedly installed above an air inlet opened at one end of the fixed plate; the suction mechanism comprises an air guide component and two wall panels; the bottom surface of the wall panel is fixedly connected to the top surface of the fixed plate; one end surface of the two wall panels is fixedly connected to the filtering mechanism; an isolation component is fixedly connected to the other end surface of the two wall panels; an air guide component is fixedly connected between the two wall panels; the isolation component is fixedly connected and connected to a fan; the spraying mechanism comprises a spray box connected to an external water source and a plurality of spray components arranged on the bottom surface of the spray box; the bottom surfaces of the spray box are respectively arranged on the top surface of the wall panel; and the sealing mechanism is respectively sleeved on the outer side surfaces of the wall panel and the spray box. The invention can effectively isolate the excavation dust, gradually reduce the dust diffusion, and facilitate the entry and exit of operators.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine dust prevention, in particular to a closed dust removal device for coal mines. Background Art

[0002] With the advancement of science and technology in today's society, the degree of mechanization in all walks of life is constantly improving, and this is also true in coal mine production operations. Due to the small space for underground coal mining and poor ventilation, underground coal mine dust is inevitably generated during the production process, which seriously pollutes the underground environment and poses a certain degree of threat to the working environment.

[0003] Considering the target source, underground dust removal can be mainly divided into three categories: "prevention", "blocking" and "elimination". In the process of coal mining, the generation of smoke and dust is inevitable. In order to eliminate smoke and dust, blocking and elimination are the main means of elimination. However, in the actual coal mining process, devices can be set up to isolate all smoke and dust. At the same time, it also isolates the path for personnel to enter the smoke and dust area for operation, which brings great inconvenience to the mining work. Therefore, it is necessary to design a closed dust removal device for coal mines to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a closed dust removal device for coal mines to solve the problems existing in the above-mentioned prior art, so that the excavation dust can be effectively isolated, the dust diffusion can be gradually reduced, and the entry and exit of operators can be convenient.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a closed dust removal device for coal mines, comprising a sealing mechanism, a walking mechanism, a suction mechanism, a filtering mechanism and a spraying mechanism;

[0007] The walking mechanism comprises a fixed plate and four walking wheels fixedly mounted at the four corners of the bottom surface of the fixed plate; an air inlet is opened at one end of the fixed plate; the filtering mechanism is fixedly mounted above the air inlet;

[0008] The suction mechanism comprises an air guide component and two wall panels; the bottom surface of the wall panel is fixedly connected to the top surface of the fixed plate; one end surface of the two wall panels is fixedly connected to the filtering mechanism; the other end surfaces of the two wall panels are fixedly connected with an isolation component; an air guide component is fixedly connected between the two wall panels; the isolation component is fixedly connected and connected with a fan;

[0009] The spray mechanism includes a spray box and a plurality of spray components; the spray box is connected to an external water source; the bottom surface of the spray box is respectively fixedly installed on the isolation component, the top surface of the wall panel and the top surface of the air guide component; the spray components are arranged on the bottom surface of the spray box; the sealing mechanism is respectively sleeved on the outer side surfaces of the wall panel and the spray box.

[0010] Preferably, the filtering mechanism includes two fan-shaped wall panels; the bottom side surface of the wall panel is fixedly connected to the top surface of the fixed plate, and the other side surface of the wall panel is fixedly connected to one end surface of the wall panel; a filter screen and an arc-shaped guide plate are respectively arranged between the two wall panels; the bottom end of the filter screen is rotatably connected to the two wall panels respectively, the top end of the filter screen is in sliding contact with the inner side surface of the guide plate, and hydraulic cylinders are respectively hinged on both sides of the middle part of the filter screen, and the cylinder body end of the hydraulic cylinder is rotatably connected to the wall panels; an installation groove and an installation hole are respectively opened on the guide plate; the installation groove is arranged on one side of the installation hole; and closing components are respectively arranged in the installation hole and the installation groove.

[0011] Preferably, the closing assembly includes a closing door; the closing door is adapted to the mounting hole; the inner side surface of the closing door is adapted to the inner side surface of the guide plate, and the outer side surface of the closing door is hinged with a first fixing rod; one end of the first fixing rod is hinged with a second fixing rod; one end of the second fixing rod is hinged with a slider; the slider is slidably connected to the mounting groove; the mounting groove is a T-shaped groove.

[0012] Preferably, the filter screen comprises a fixed frame and a walking plate of a cross-shaped structure; the inner side surface of the fixed frame is respectively fixedly connected with the screen screen and the four end surfaces of the walking plate; the bottom end of the fixed frame is respectively rotatably connected with the two wall panels, the top end of the fixed frame is in sliding contact with the inner side surface of the guide plate, and the output ends of the hydraulic cylinder are respectively hinged on both sides of the middle part of the fixed frame.

[0013] Preferably, the air guide assembly includes a plurality of partition plates; one side of the partition plate is fixedly connected to a side of the wall panel; the plurality of partition plates are parallel to each other and arranged at equal intervals; the plurality of partition plates are staggered with each other; the spray assembly is arranged on both sides of the partition plates; the partition plates are fixedly connected between the bottom surface of the spray box and the top surface of the fixed plate.

[0014] Preferably, the spray assembly includes a plurality of spray pipes; both ends of the spray pipes are fixedly connected to the two wall panels respectively; the sides of the spray pipes are fixedly connected and connected to a plurality of nozzles; the spray pipes are fixedly connected and connected to a spray pump; the spray pump is arranged in the inner cavity of the spray box.

[0015] Preferably, the isolation assembly includes an isolation plate; the side of the isolation plate is fixedly connected to and connected to the fan; one end face of the isolation plate is fixedly connected to one side of the wall panel, and the other end face of the isolation plate is provided with a slide groove; a sliding door is slidably connected in the slide groove; the isolation plate and the sliding door are respectively fitted with the bottom surface of the spray box and the top surface of the fixed plate.

[0016] Preferably, the sealing mechanism comprises a sealing frame and an isolation brush; the inner side surface of the sealing frame is respectively sleeved on the outer side surfaces of the wall panel and the spray box; and the outer side surface of the sealing frame is bonded to the isolation brush.

[0017] Preferably, the air inlet is arranged between the fixing frame and the guide plate.

[0018] The present invention discloses the following technical effects:

[0019] The present invention can seal off the excavation operation area of ​​the coal mine tunnel, thereby preventing the smoke and dust generated during the tunnel excavation process from escaping and affecting the health of operators.

[0020] The present invention realizes the communication of the blockage at the tunnel excavation end by arranging the filtering mechanism and the isolation component, and facilitates the operators to enter the blocked tunnel to perform operations.

[0021] The present invention discharges the purified wastewater into the tunnel, thus preventing the smoke and dust settled on the bottom from flying again, and also preventing the emission pollution, thereby improving the utilization rate of the purified water. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

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

[0024] Figure 2 The figure is a side view schematic diagram of the structure of the present invention with one wall panel removed.

[0025] Figure 3 It is a schematic diagram of the side structure of the closed component.

[0026] Figure 4 It is a schematic diagram of the side structure of the spray assembly.

[0027] Figure 5 It is a side view structural diagram of the walking mechanism.

[0028] Figure 6 It is a schematic diagram of the side structure of the air guide component.

[0029] Figure 7 It is a schematic diagram of the side structure of embodiment 2.

[0030] Figure 8 It is a side view structural schematic diagram of embodiment 3.

[0031] Among them, 1. sealing mechanism; 11. sealing frame; 12. isolation brush; 2. walking mechanism; 21. fixed plate; 22. walking wheel; 23. air inlet; 3. suction mechanism; 31. wall panel; 32. partition plate; 33. isolation plate; 34. sliding door; 35. fan; 4. spray mechanism; 41. spray box; 42. spray pipe; 43. nozzle; 44. spray pump; 5. filtering mechanism; 51. wall panel; 52. guide plate; 53. fixed frame; 54. walking plate; 55. sealing door; 56. first fixed rod; 57. second fixed rod; 58. slider; 59. hydraulic cylinder; 61. valve; 62. collar; 63. rotating shaft; 64. gear ring; 65. gear; 66. leakage pipe; 67. sewage pump. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Embodiment 1:

[0035] A closed dust removal device for coal mines, comprising a sealing mechanism 1, a walking mechanism 2, a suction mechanism 3, a filtering mechanism 5 and a spraying mechanism 4;

[0036] The walking mechanism 2 includes a fixed plate 21 and four universal walking wheels 22 fixedly installed at the four corners of the bottom surface of the fixed plate 21, so as to facilitate the free movement of the present invention in the coal mine tunnel; an air inlet 23 is provided at one end of the fixed plate 21; a filtering mechanism 5 is fixedly installed above the air inlet 23; by providing the air inlet 23 on the fixed plate 21, the air in the tunnel can be introduced from the air inlet 23 located at the bottom of the tunnel, thereby reducing the air pressure at the bottom of the tunnel, which is beneficial to pressing down the air with smoke and dust at the top of the tunnel, and accelerating the natural sedimentation of part of the smoke and dust.

[0037] The suction mechanism 3 includes an air guide component and two wall panels 31; the bottom surface of the wall panel 31 is fixedly connected to the top surface of the fixed plate 21; one end surface of the two wall panels 31 is fixedly connected to the filter mechanism 5; the other end surfaces of the two wall panels 31 are fixedly connected with an isolation component; an air guide component is fixedly connected between the two wall panels 31; the isolation component is fixedly connected and connected with a fan 35;

[0038] The spray mechanism 4 includes a spray box 41 and a plurality of spray components; the spray box 41 is connected to an external water source and is filled with water; the bottom surface of the spray box 41 is fixedly mounted on the isolation component, the top surface of the wall panel 31 and the top surface of the air guide component; the spray components are arranged on the bottom surface of the spray box 41; the sealing mechanism 1 is respectively sleeved on the outer side surfaces of the wall panel 31 and the spray box 41.

[0039] A further optimized solution is that the air guide assembly includes a plurality of partition plates 32; one side of the partition plate 32 is fixedly connected to a side of the wall panel 31; the plurality of partition plates 32 are parallel to each other and arranged at equal intervals; the plurality of partition plates 32 are staggered with each other, that is, one end of a partition plate 32 is fixedly connected to a wall panel 31, and the other end of the partition plate 32 adjacent to this partition plate 32 is fixedly connected to another wall panel 31, forming an S-shaped channel, which increases the air flow distance and can provide time and space for the subsequent spray assembly to operate, and a spray assembly is arranged at the top of the channel to reduce smoke and dust in the S-shaped channel; the spray assembly is arranged on both sides of the partition plate 32; the top surface of the partition plate 32 is fixedly connected to the bottom surface of the spray box 41, and the bottom surface of the partition plate 32 is fixedly connected to the top surface of the fixed plate 21.

[0040] According to a further optimized solution, the spray assembly includes a plurality of spray pipes 42; both ends of the spray pipes 42 are fixedly connected to the two wall panels 31 respectively; the sides of the spray pipes 42 are fixedly connected and connected to a plurality of nozzles 43; the spray pipes 42 are fixedly connected and connected to a spray pump 44; and the spray pump 44 is arranged in the inner cavity of the spray box 41.

[0041] Furthermore, the nozzle of the nozzle 43 is arranged toward the fixed plate 21, and the water column sprayed by the nozzle 43 forms a water curtain in the channel to purify the air flowing through.

[0042] Furthermore, the spray pump 44 is a submersible pump, which can be immersed in the spray box 41, thereby avoiding safety accidents caused by sparks in the environment of a large amount of smoke and dust in the coal mine tunnel.

[0043] A further optimized solution is that the isolation assembly includes an isolation plate 33; the isolation plate 33 and the partition plate 32 are parallel to each other and have a clearance fit; the side of the isolation plate 33 is fixedly connected and connected to a fan 35, through which the air in the isolated coal mine tunnel excavation operation area is extracted and enters the channel for purification; one end face of the isolation plate 33 is fixedly connected to one side of the wall panel 31 close to the partition plate 32, and the other end face of the isolation plate 33 is provided with a slide groove; a sliding door 34 is slidably connected in the slide groove, and the sliding door 34 is normally closed when the fan 35 is working; the isolation plate 33 and the sliding door 34 are respectively in contact with the bottom surface of the spray box 41 and the top surface of the fixed plate 21.

[0044] Furthermore, the top surface and the bottom surface of the isolation plate 33 are fixedly connected to the bottom surface of the spray box 41 and the top surface of the fixing plate 21 respectively, thereby improving the stability and sealing of the isolation plate 33.

[0045] According to a further optimization scheme, the filtering mechanism 5 includes two fan-shaped wall panels 51; the bottom side of the wall panel 51 is fixedly connected to the top surface of the fixed plate 21, and the other side of the wall panel 51 is fixedly connected to one end surface of the wall panel 31, and the fan-shaped side surfaces of the two wall panels 51 are arranged oppositely and in parallel; a filter screen and an arc-shaped guide plate 52 are respectively arranged between the two wall panels 51; the arc-shaped guide plate 52 can guide the airflow of the air inside and outside the guide plate 52, thereby improving the air flow efficiency; the bottom end of the filter screen is rotatably connected to the two wall panels 51 respectively, the top end of the filter screen is in sliding contact with the inner side surface of the guide plate 52, and the two sides of the middle part of the filter screen are respectively hinged with hydraulic cylinders 59, and the cylinder end of the hydraulic cylinder 59 is rotatably connected to the wall panel 31; at this time, a fan-shaped filter chamber composed of the guide plate 52, the filter screen and the wall panel 51 is formed; the guide plate 52 is respectively provided with a mounting groove and a mounting hole; the mounting groove is arranged on one side of the mounting hole; and the mounting hole and the mounting groove are respectively provided with a closed component.

[0046] Furthermore, the filter screen is arranged opposite to the partition plate 32, and the filter screen seals the outlet of the filter cavity, so that the air sucked in by the air inlet 23 is filtered and then introduced into the channel.

[0047] To further optimize the solution, the closing component includes a sealing door 55 for the operator to pass through; the sealing door 55 is adapted to the mounting hole; the inner side surface of the sealing door 55 is adapted to the inner side surface of the guide plate 52, and the outer side surface of the sealing door 55 is hinged with a first fixing rod 56; one end of the first fixing rod 56 is hinged with a second fixing rod 57; one end of the second fixing rod 57 is hinged with a slider 58; the slider 58 is slidably connected to the mounting groove, so that the sealing door 55 can be pushed out and buckled in along the hinge direction of the first fixing rod 56 and the second fixing rod 57, thereby realizing the opening and closing of the sealing door 55; the mounting groove is a T-shaped groove, which prevents the slider 58 from slipping out of the mounting groove.

[0048] A further optimized solution is that the filter screen includes a fixed frame 53 and a walking board 54 with a cross structure; the inner side surface of the fixed frame 53 is fixedly connected with a screen (not shown in the drawings) and four end surfaces of the walking board 54; the bottom end of the fixed frame 53 is rotatably connected with two wall panels 51, the top end of the fixed frame 53 is in sliding contact with the inner side surface of the guide plate 52, and the output ends of the hydraulic cylinder 59 are hinged on both sides of the middle part of the fixed frame 53. By setting the walking board 54, when people need to pass, the fixed frame 53 can be lowered to the lowest position by the hydraulic cylinder 59, and people can pass by stepping on the walking board 54.

[0049] Furthermore, the screen is an existing metal filter screen for filtering dust, and can withstand the flushing of a high-pressure water gun.

[0050] A further optimized solution is to utilize the present invention to isolate the coal mine tunnel. A sealing mechanism 1 is sleeved on the outer side surfaces of the spray box 41, the wall panel 31 and the fixed plate 21. The sealing mechanism 1 includes a sealing frame 11 and an isolation brush 12. The inner side surfaces of the sealing frame 11 are respectively sleeved on the outer side surfaces of the wall panel 31 and the spray box 41. The outer side surface of the sealing frame 11 is bonded to the isolation brush 12.

[0051] Furthermore, the isolation brush 12 can be in close contact with the four walls of the tunnel, and the tunnels on both sides of the present invention are isolated through the dense bristles, thereby preventing dust from escaping.

[0052] According to a further optimized solution, the air inlet 23 is disposed between the fixing frame 53 and the guide plate 52 .

[0053] The working process of this embodiment is as follows:

[0054] When the coal mine is mining, the present invention is set in a tunnel at a certain distance from the mining machine. At this time, a large amount of dust generated by the mining process of the mining machine will fill the entire tunnel. However, because the present invention isolates the entire tunnel, the air in the tunnel on the rear side of the present invention is clean.

[0055] At the same time, during the excavation operation of the mining machine, there will be operators working close to the mining machine. At this time, the present invention is required to purify the air in the blocked tunnel. Therefore, during the operation of the present invention, the sealing door 55 will be closed, and the fan 35 will be turned on to suck the air in the blocked tunnel. The air enters the filter chamber through the air inlet 23 and is filtered by the screen to filter out most of the dust. The remaining air passes through the screen and enters the channel. At this time, the spray pump 44 located in the spray box 41 is turned on to press the water in the spray box 41 into the spray pipe 42, and the spray pipe 42 sprays the water through the nozzle 43 to purify the residual dust in the air. When the water after spraying accumulates to a certain height, the sealing door 55 is opened to discharge the sewage into the tunnel.

[0056] If the operator needs to enter the blocked tunnel through the present invention, he needs to stop the fan 35, turn off the spray pump 44, open the sealing door 55, enter the passage, and when he reaches the filter, he turns on the hydraulic cylinder 59. The filter is placed horizontally by the extension and retraction of the hydraulic cylinder 59. The operator comes to the sealing door 55 through the walking board 54 and pushes the sealing door 55. At this time, the first fixed rod 56 and the second fixed rod 57 rotate in turn according to the hinge point, and the sealing door 55 is pushed away from the mounting hole. During the process, the slider 58 can slide freely back and forth in the mounting groove. When the operator enters the blocked tunnel, the sealing door 55 is closed.

[0057] Embodiment 2:

[0058] The only difference between this embodiment and the first embodiment is that one end of the spray pipe 42 near the filter is fixedly connected to a steering mechanism; the steering mechanism includes a gear 65; one end of the spray pipe 42 near the filter is fixedly connected to the center of the gear 65, and the other end is rotatably connected to the wall panel 31; the gear 65 is rotatably connected to the adjacent wall panel 31; a sleeve 62 is fixedly connected to the cylinder end of the hydraulic cylinder 59, and the sleeve 62 is sleeved on the rotating shaft 63, and the outer side surface of the sleeve 62 is fixedly connected and sleeved with a gear ring 64; the gear ring 64 and the gear 65 are meshed; when the filter is placed vertically, the nozzle 43 on the spray pipe 42 near the filter is horizontally arranged toward the filter; the spray pipe 42 near the filter is opened when needed.

[0059] The implementation process of this embodiment is as follows:

[0060] When the screen of the filter needs to be cleaned after being used for a period of time, it is only necessary to open the hydraulic cylinder 59 to enable the fixed frame 53 to slowly descend along the inner side of the guide plate 52 until it is placed horizontally. During the process of the fixed frame 53 slowly descending and being placed horizontally, the nozzle 43 will gradually rotate under the meshing of the gear 65 and the ring gear 64, thereby achieving the scanning of the screen, that is, backwashing, and the washed water and dust flow out into the tunnel through the air inlet 23.

[0061] Embodiment three:

[0062] The difference between this embodiment and the first embodiment is that a leakage hole is provided on the top surface of the fixed plate 21 arranged below the spray box 41; a leakage pipe 66 is fixedly connected and installed in the leakage hole, and a sewage pump 67 is fixedly installed in the leakage pipe 66; a valve 61 is provided at the connection port of the sewage pump 67; and the leakage hole is provided between the sealing frame 11 and the fixed frame 53. When the purified water sprayed by the nozzle 43 in the channel accumulates on the top surface of the fixed plate 21, the sewage pump 67 and the valve 61 are turned on, and the sewage pump 67 discharges the sewage into the lane through the valve 61; and the continuous operation of the present invention is realized. The valve 61 can ensure that the fan 35 can be closed when sucking air to ensure that the sewage pump 67 is not affected by negative pressure.

[0063] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0064] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A closed dust removal device for coal mines, characterized in that: It comprises a sealing mechanism (1), a walking mechanism (2), a suction mechanism (3), a filtering mechanism (5) and a spraying mechanism (4); The walking mechanism (2) comprises a fixed plate (21) and four walking wheels (22) fixedly mounted at the four corners of the bottom surface of the fixed plate (21); an air inlet (23) is provided at one end of the fixed plate (21); the filtering mechanism (5) is fixedly mounted above the air inlet (23); The suction mechanism (3) comprises an air guide component and two wall panels (31); the bottom surface of the wall panel (31) is fixedly connected to the top surface of the fixed plate (21); one end surface of the two wall panels (31) is fixedly connected to the filtering mechanism (5); the other end surfaces of the two wall panels (31) are fixedly connected to an isolation component; an air guide component is fixedly connected between the two wall panels (31); the isolation component is fixedly connected to and communicated with a fan (35); The spray mechanism (4) comprises a spray box (41) and a plurality of spray components; the spray box (41) is connected to an external water source; the bottom surface of the spray box (41) is respectively fixedly mounted on the isolation component, the top surface of the wall plate (31) and the top surface of the air guide component; the spray components are arranged on the bottom surface of the spray box (41); the sealing mechanism (1) is respectively sleeved on the outer side surfaces of the wall plate (31) and the spray box (41); The filtering mechanism (5) comprises two fan-shaped wall panels (51); the bottom side of the wall panel (51) is fixedly connected to the top surface of the fixed plate (21), and the other side of the wall panel (51) is fixedly connected to an end surface of the wall panel (31); a filter screen and an arc-shaped guide plate (52) are respectively arranged between the two wall panels (51); the bottom end of the filter screen is rotatably connected to the two wall panels (51), the top end of the filter screen is in sliding contact with the inner side surface of the guide plate (52), and hydraulic cylinders (59) are respectively hinged on both sides of the middle part of the filter screen, and the cylinder end of the hydraulic cylinder (59) is rotatably connected to the wall panel (31); the guide plate (52) is respectively provided with a mounting groove and a mounting hole; the mounting groove is arranged on one side of the mounting hole; and a sealing component is respectively arranged in the mounting hole and the mounting groove; The closing assembly comprises a sealing door (55); the sealing door (55) is matched with the mounting hole; the inner side surface of the sealing door (55) is matched with the inner side surface of the guide plate (52); the outer side surface of the sealing door (55) is hinged with a first fixing rod (56); one end of the first fixing rod (56) is hinged with a second fixing rod (57); one end of the second fixing rod (57) is hinged with a sliding block (58); the sliding block (58) is slidably connected with the mounting groove; the mounting groove is a T-shaped groove; The air guide assembly comprises a plurality of partition plates (32); one side of the partition plate (32) is fixedly connected to one side of the wall plate (31); the plurality of partition plates (32) are parallel to each other and arranged at equal intervals; the plurality of partition plates (32) are staggered with each other; the spray assembly is arranged on both sides of the partition plate (32); the partition plate (32) is fixedly connected between the bottom surface of the spray box (41) and the top surface of the fixed plate (21); The isolation assembly comprises an isolation plate (33); the isolation plate (33) is fixedly connected to the side surface of the fan (35) and is connected to the fan (35); one end surface of the isolation plate (33) is fixedly connected to one side of the wall plate (31), and the other end surface of the isolation plate (33) is provided with a slide groove; a slide door (34) is slidably connected in the slide groove; the isolation plate (33) and the slide door (34) are respectively in contact with the bottom surface of the spray box (41) and the top surface of the fixed plate (21).

2. A closed dust removal device for coal mines according to claim 1, characterized in that: The filter screen comprises a fixed frame (53) and a walking plate (54) of a cross-shaped structure; the inner side surface of the fixed frame (53) is respectively fixedly connected with the screen and four end surfaces of the walking plate (54); the bottom end of the fixed frame (53) is respectively rotatably connected with the two wall panels (51), the top end of the fixed frame (53) is in sliding contact with the inner side surface of the guide plate (52), and the output ends of the hydraulic cylinder (59) are respectively hinged on both sides of the middle part of the fixed frame (53).

3. A closed dust removal device for coal mines according to claim 1, characterized in that: The spray assembly comprises a plurality of spray pipes (42); the two ends of the spray pipes (42) are respectively fixedly connected to the two wall panels (31); the sides of the spray pipes (42) are fixedly connected to and communicated with a plurality of spray heads (43); the spray pipes (42) are fixedly connected to and communicated with a spray pump (44); the spray pump (44) is arranged in the inner cavity of the spray box (41).

4. A closed dust removal device for coal mines according to claim 1, characterized in that: The sealing mechanism (1) comprises a sealing frame (11) and an isolation brush (12); the inner side surface of the sealing frame (11) is respectively sleeved on the outer side surfaces of the wall plate (31) and the spray box (41); and the outer side surface of the sealing frame (11) is bonded to the isolation brush (12).

5. A closed dust removal device for coal mines according to claim 2, characterized in that: The air inlet (23) is arranged between the fixing frame (53) and the guide plate (52).

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