A wind curtain dust control device and method for large cross-section fully mechanized mining face

Abstract

The application discloses a kind of wind curtain dust control device and method for large section fully mechanized working face, including wind curtain component, wind curtain component includes the wind curtain generating device being arranged in roadway, wind curtain generating device is located at the end of fully mechanized mining machine away from fully mechanized mining face;Wind curtain generating device is communicated with air supply part, air supply part is slidably connected at the top of roadway;Dust removal component, dust removal component is located at the side of wind curtain generating device away from fully mechanized mining machine, dust removal component is slidably connected at the top of roadway, the inlet of dust removal component extends into wind curtain generating device and between fully mechanized mining face;Monitoring component, monitoring component is installed on fully mechanized mining machine, and monitoring component is electrically connected with air supply part and dust removal component respectively.The application forms closed dust control system by moving with fully mechanized mining machine along with wind curtain component and dust removal component, it is easy to operate, degree of automation is high, effectively realize the efficient control of dust, guarantee the working environment of working face.

Description

Technical Field

[0001] This invention relates to the field of dust control technology for continuous mining faces, and in particular to an air curtain dust control device and method for large-section continuous mining faces. Background Technology

[0002] Coal is my country's basic energy source and important raw material, holding a vital strategic position in the national economy. Due to my country's abundant coal reserves but limited gas and oil resources, coal will continue to play a significant role in my country's primary energy structure for a considerable period. The stable, healthy, sustainable, and efficient development of the coal industry is crucial to national energy security. Continuous mining operations are trending towards increasing mechanization and modernization, with high-yield, intensive mining methods and processes constantly evolving. Continuous mining machines offer advantages such as rapid coal cutting, long-distance unidirectional mining, and high coal yields. However, while these technologies improve coal productivity, they also exacerbate dust generation in the working environment.

[0003] Coal dust is one of the most significant occupational hazards and natural disasters in continuous mining operations. Excessive dust concentration reduces visibility, impacting miners' labor productivity and increasing the incidence of pneumoconiosis. While existing air curtain technology can control dust to some extent, its effectiveness is poor, and it is cumbersome and inefficient.

[0004] Therefore, there is an urgent need to design an air curtain dust control device and method for large-section continuous mining faces to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide an air curtain dust control device and method for large-section continuous mining faces, so as to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides an air curtain dust control device for large-section continuous mining faces, comprising:

[0007] An air curtain assembly includes an air curtain generating device arranged in the roadway, the air curtain generating device being located at the end of the continuous mining machine away from the continuous mining face; the air curtain generating device is connected to an air supply component, the air supply component being slidably connected to the top of the roadway;

[0008] A dust removal component is located on the side of the air curtain generating device away from the continuous mining machine. The dust removal component is slidably connected to the top of the roadway, and the inlet of the dust removal component extends between the air curtain generating device and the continuous mining face.

[0009] A monitoring component is installed on the continuous mining machine and is electrically connected to the air supply component and the dust removal component, respectively.

[0010] Preferably, the air curtain generating device comprises two symmetrically arranged air distribution pipes, both of which are slidably connected with two side walls of the roadway; a first air outlet is formed on the side of the air distribution pipe facing the continuous mining face; a plurality of second air outlets are formed on the opposite side of the air distribution pipe; a compressed air cylinder is communicated between the top ends of the two air distribution pipes, and the compressed air cylinder is communicated with the air supply component.

[0011] Preferably, a first air baffle is mounted on the end of the air distribution pipe facing the continuous mining face, and the first air baffle is arranged corresponding to the first air outlet; a plurality of second air baffles are mounted on the side of the air distribution pipe where the second air outlets are formed, and the second air baffles are symmetrically fixed on both sides of the second air outlets.

[0012] Preferably, the air supply component comprises an air supply pipe communicated with the compressed air cylinder, and an air supply fan is mounted on the other end of the air supply pipe; a first sliding rail is mounted on the top end of the roadway along the roadway, a first trolley is slidably connected on the first sliding rail, and the air supply fan is mounted on the bottom end of the first trolley; a second sliding rail is mounted on both sides of the roadway along the roadway, a second trolley is slidably connected on the second sliding rail, and the air distribution pipe is mounted on the second trolley; a guide rail is mounted on the bottom end of the roadway corresponding to the bottom end of the air distribution pipe, and a guide wheel is mounted on the bottom end of the air distribution pipe, which is in rolling contact with the guide rail; the air supply fan, the first trolley and the second trolley are electrically connected with the monitoring assembly.

[0013] Preferably, a first adjusting device is mounted between the first air baffle and the side wall of the air distribution pipe, and a second adjusting device is mounted between the second air baffle and the side wall of the air distribution pipe, both of which are electrically connected with the monitoring assembly.

[0014] Preferably, the dust removal assembly comprises a dust removal fan slidably connected on the top end of the roadway, which is located on the side of the air curtain generating device away from the continuous mining face; an air extraction pipe is communicated with the air inlet of the dust removal fan, the air extraction pipe is connected with the air curtain generating device and extends to the continuous mining face; a dust collection air box is communicated with the air outlet of the dust removal fan.

[0015] Preferably, a third sliding rail is mounted on the top end of the roadway along the roadway, a third trolley is mounted on the third sliding rail, and the dust removal fan and the dust collection air box are mounted on the bottom end of the third trolley, respectively; a supporting pulley is slidably connected on the third sliding rail, and the air inlet end of the air extraction pipe is suspended below the supporting pulley.

[0016] A wind curtain dust control method for a large-section continuous mining face, comprising the following steps:

[0017] Step one: the continuous miner excavates; the continuous miner is driven to excavate in the mining face in the roadway;

[0018] Step two: the air curtain controls dust; the air curtain component behind the continuous miner forms an air curtain behind the continuous miner to block dust;

[0019] Step three: the air is sucked and the dust is removed; the inlet of the dust removal component is inserted between the mining face and the air curtain, and the dust in the roadway is sucked away;

[0020] Step four: system adjustment; the monitoring component installed on the continuous miner is used to monitor the mining face area, and the monitoring component controls the working state of the air curtain component and the dust removal component.

[0021] Preferably, in step four, the monitoring component is used to monitor the wind speed and dust concentration in the mining face area, and then control the air curtain strength, angle and moving speed of the air curtain component, and control the dust removal speed and moving speed of the dust removal component.

[0022] The present application discloses the following technical effects: the present application discloses an air curtain dust control device and method for large-section continuous mining face, the air curtain generating device of the air curtain component forms an air curtain with the size of the section in the roadway, and blocks the diffusion of dust generated at the mining face to the rear part of the roadway; after the dust is controlled in the front part of the roadway, the dust removal component sucks, collects and processes the dust, and reduces the dust concentration in the dust control area; the monitoring component is used to monitor the wind speed and dust concentration in the environment of the mining face area, and then adjust the air supply speed, strength and angle of the air curtain generating device, and adjust the dust removal speed of the dust removal component, and the monitoring component can also control the moving direction and speed of the air curtain component and the dust removal component, and then adjust the size of the dust area, realize the coupling of the air curtain component, the dust removal component and the continuous mining operation, and realize dust control and dust removal in the continuous mining process. The present application forms a closed dust control system by moving the air curtain component and the dust removal component with the continuous miner, which is simple to operate, has high automation degree, effectively realizes efficient dust control and removal, and ensures the working environment of the working face. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0024] Figure 1 It is an axial view of the air curtain dust control device for large-section continuous mining face of the present application;

[0025] Figure 2This is a front view of the air curtain dust control device for large-section continuous mining face according to the present invention;

[0026] Figure 3 This is an axial view of the air curtain assembly of the present invention;

[0027] Figure 4 For the present invention Figure 3 A magnified view of part A in the image;

[0028] Figure 5 For the present invention Figure 3 A magnified view of part B in the image;

[0029] The components include: 1. Roadway; 2. Continuous mining machine; 3. Air curtain assembly; 4. Dust removal assembly; 5. Monitoring assembly; 11. Continuous mining face; 31. Air curtain generating device; 32. Air distribution duct; 33. First air outlet; 34. Second air outlet; 35. Air compressor; 36. First air guide plate; 37. Second air guide plate; 38. Air supply duct; 39. Air supply fan; 310. First slide rail; 311. First trolley; 312. Second slide rail; 313. Second trolley; 314. Guide rail; 315. Guide wheel; 316. First adjustment device; 317. Second adjustment device; 41. Dust removal fan; 42. Exhaust duct; 43. Dust collection air box; 44. Third slide rail; 45. Third trolley; 46. Support pulley; 51. Control box; 52. Dust concentration sensor; 53. Wind speed sensor. Detailed Implementation

[0030] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Reference Figures 1-5 This invention provides an air curtain dust control device for large-section continuous mining faces, comprising:

[0033] The air curtain assembly 3 includes an air curtain generating device 31 arranged in the roadway 1. The air curtain generating device 31 is located at the end of the continuous mining machine 2 away from the continuous mining face 11. The air curtain generating device 31 is connected to an air supply component, which is slidably connected to the top of the roadway 1.

[0034] The dust removal assembly 4 is located on the side of the air curtain generating device 31 away from the continuous mining machine 2, is slidingly connected to the top of the roadway 1, and the inlet of the dust removal assembly 4 extends into the space between the air curtain generating device 31 and the continuous mining face 11.

[0035] The monitoring assembly 5 is installed on the continuous mining machine 2 and is electrically connected to the air supply part and the dust removal assembly 4.

[0036] The dust removal assembly 4 is located on the side of the air curtain generating device 31 away from the continuous mining machine 2, is slidingly connected to the top of the roadway 1, and the inlet of the dust removal assembly 4 extends into the space between the air curtain generating device 31 and the continuous mining face 11.

[0037] Further optimization scheme, the air curtain generating device 31 includes two symmetrical arranged air distribution pipes 32, two air distribution pipes 32 are slidingly connected with the two side walls of the roadway 1 respectively;The side of the air distribution pipe 32 towards the continuous mining machine 2 is provided with a first air port 33;The opposite side of the two air distribution pipes 32 is respectively provided with a second air port 34;The top ends of the two air distribution pipes 32 are communicated with a compressed air cylinder 35, and the compressed air cylinder 35 is communicated with the air supply part.In this embodiment, the first air port 33 is arranged on the side of the air distribution pipe 32 towards the continuous mining face 11, which is two longitudinally arranged rectangulars with a size of 16cmX180cm, for supplying air to the continuous mining face 11 in the roadway 1, and generating an air curtain on the side wall of the roadway to prevent dust from leaking out of the air distribution pipe 32 and the side wall of the roadway;The second air port 34 is a rectangular air port with a size of 10cmX60cm on the center direction of each air distribution pipe 32, and 15 second air ports 34 are longitudinally arranged on each air distribution pipe 32;The second air port 34 discharges air to the center of the roadway 1, and forms an air curtain on the cross section of the roadway 1 to isolate the dust;The two ends of the compressed air cylinder 35 are communicated with the top ends of the two air distribution pipes 32, and the air force of the air supply part is transmitted to the air distribution pipe 32.

[0038] Further optimization scheme, the one end of the air distribution pipe 32 towards the continuous mining face 11 is provided with a first air baffle 36, and the first air baffle 36 is provided correspondingly with the first air inlet 33; the side of the air distribution pipe 32 provided with the second air inlet 34 is provided with a plurality of second air baffles 37, and the second air baffles 37 are symmetrically fixed on the two sides of the second air inlet 34; the first adjusting device 316 is arranged between the first air baffle 36 and the side wall of the air distribution pipe 32, the second adjusting device 317 is arranged between the second air baffle 37 and the side wall of the air distribution pipe 32, and the first adjusting device 316 and the second adjusting device 317 are electrically connected with the monitoring assembly 5. The first air baffle 36 is correspondingly arranged at the first air inlet 33, the first air baffle is installed on the air distribution pipe 32 through the first adjusting device 316, the angle and the opening and closing of the first air baffle 36 can be adjusted under the control of the monitoring assembly 5, the air supply to the roadway 1 and the continuous mining face 11 is realized, and the angle and the air volume of the air supply are adjusted; the second air baffles 37 on the two sides of the second air inlet 34 are installed on the side wall of the air distribution pipe 32 through the second adjusting device 317, the angle of the second air baffle 37 is deflected through the control of the monitoring assembly 5, the flow direction and the speed of the air flow at the second air inlet 34 are controlled, and the air curtain is adjusted.

[0039] Further optimization scheme, the air supply member includes an air supply pipe 38 communicated with the air pressure cylinder 35, and the other end of the air supply pipe 38 is provided with an air blower 39; the top end of the roadway 1 is provided with a first sliding rail 310 arranged along the roadway 1, the first sliding rail 310 is slidably connected with a first trolley 311, and the air blower 39 is installed at the bottom end of the first trolley 311; the two sides of the roadway 1 are respectively provided with a second sliding rail 312 arranged along the roadway 1, the second sliding rail 312 is slidably connected with a second trolley 313, and the air distribution pipe 32 is installed on the second trolley 313; the bottom end of the roadway 1 is provided with a guide rail 314 correspondingly arranged with the bottom end of the air distribution pipe 32, and the bottom end of the air distribution pipe 32 is provided with a guide wheel 315 in rolling contact with the guide rail 314; the air blower 39, the first trolley 311 and the second trolley 313 are electrically connected with the monitoring assembly 5. The air blower 39 supplies air to the air pressure cylinder through the air supply pipe 38, forms an air curtain and related air supply to the continuous mining face 11; the first trolley 311 drives the air blower 39 to move at the top end of the roadway 1, the second trolley 313 drives the air distribution pipe 32 to move in the roadway 1, and the first trolley 311 and the second trolley 313 are interlocked to control, so that the air curtain assembly 3 moves with the mining machine 2; the guide wheel 315 at the bottom end of the air distribution pipe 32 supports the air distribution pipe 32 on the guide rail 314 at the bottom surface of the roadway 1, supports the air distribution pipe 32, and reduces the resistance of the air distribution pipe 32 moving; the monitoring mechanism can control the air volume of the air blower 39 and the moving direction and speed of the first trolley 311 and the second trolley 313.

[0040] Further, the air supply pipe 38 and the air pressure pipe are connected through a hose (not shown in the figure), so as to prevent the air supply pipe 38 and the air pressure pipe from being broken at the turning place of the roadway 1.

[0041] Further optimization scheme, dust removal assembly 4 includes dust removal fan 41 slidingly connected to the top of the roadway 1, dust removal fan 41 is located on the side away from the mining face 11 of the air curtain generating device 31; the air inlet of the dust removal fan 41 is communicated with the exhaust pipe 42, the exhaust pipe 42 is away from the dust removal fan 41 end through the air curtain generating device 31 and extends to the mining face 11; the air outlet of the dust removal fan 41 is communicated with the dust collecting air tank 43. The exhaust pipe 42 passes through the air curtain into the dust area, and the dust removal fan 41 sucks the dust in the dust area into the dust collecting air tank 43 through the exhaust pipe 42, reduces the dust concentration in the mining area, and at the same time, the exhaust can control the wind speed and pressure in the mining area, to ensure normal mining adjustment, and the monitoring assembly 5 adjusts the exhaust amount of the dust removal fan 41 according to the wind speed and dust concentration in the dust area.

[0042] Further optimization scheme, the top of the roadway 1 is provided with a third sliding rail 44 arranged along the roadway 1, the third sliding rail 44 is provided with a third trolley 45, and the dust removal fan 41 and the dust collecting air tank 43 are respectively installed at the bottom end of the third trolley 45; the third sliding rail 44 is slidingly connected with a supporting pulley 46, and the air inlet end of the exhaust pipe 42 is suspended below the supporting pulley 46. The third trolley 45 drives the dust removal fan 41 and the dust collecting air tank 43 to move in the roadway 1, so that the dust removal assembly 4 can advance together with the dust removal, and the dust removal work in the dust area is maintained; the exhaust pipe 42 is suspended on the third sliding rail 44 through the supporting pulley 46, and moves together with the third trolley 45, so that the stability of the exhaust pipe 42 is maintained.

[0043] Further, a plurality of hose connected joints (existing device, not shown in the figure) are arranged on the exhaust pipe, so that the exhaust pipe 42 deforms with the bending of the roadway 1, to prevent breaking.

[0044] Further, the monitoring assembly 5 includes a control box 51 installed in the roadway 1, and a dust concentration sensor 52 and a wind speed sensor 53 installed on the continuous mining machine 2, the control box 51 serves as the control terminal of the device system, realizes the movement control and parameter adjustment of each device, has high integration, and improves the working efficiency of the system device; the wind speed sensor 53 and the dust concentration sensor 52 are both installed on the continuous mining machine 2, and are used for monitoring the wind speed and dust concentration of the mining face, cooperating with the automatic adjustment of the control box 51 to realize real-time automatic correction of the dust control system parameters, and realizing the best dust control effect.

[0045] A wind curtain dust control method for a large-section continuous mining mining face 11, comprising the following steps:

[0046] Step one: continuous mining machine 22 excavates; the driving continuous mining machine 22 excavates in the mining face 1111 in the roadway 1; the control box 51 controls the continuous mining machine 2 to continuously excavate in the roadway 1, and automatically mine the coal mine, while the wind speed sensor 53 and the dust concentration sensor 52 installed on the continuous mining machine 2 monitor the wind speed and the dust concentration of the mining area;

[0047] Step two: wind curtain dust control; the wind curtain assembly 33 behind the continuous mining machine 22 forms a wind curtain behind the continuous mining machine 22 to block the dust; the wind curtain assembly 3 is started, the air blower 39 supplies air into the air distribution pipe 32, the control assembly controls the angle and the opening and closing degree of the first air deflector 36 and the second air deflector 37, so that the second air port 34 of the wind curtain generating device 31 forms a wind curtain on the cross section of the roadway 1, intercepts the dust between the wind curtain and the mining face 11, prevents the dust from spreading to the rear of the roadway 1, and reduces the influence on the environment and the damage to the health of the construction personnel; when the wind speed sensor 53 detects that the wind speed of the mining face 11 is lower than the set value, the control box 51 controls the first air deflector 36 to open, and the first air port 33 automatically supplies air to the mining face 11; when the dust concentration sensor 52 at the mining face 11 detects that the dust concentration is too high, the second air deflector 37 is deflected to the mining face 11, the wind curtain forming position is pushed forward, and the dust enclosed control area is reduced;

[0048] Step three: dust removal by air extraction; the inlet of the dust removal assembly 44 extends between the mining face 1111 and the wind curtain, and the dust in the roadway 1 is extracted; the inlet of the dust removal air blower 41 is communicated with the air extraction pipe 42, the air extraction pipe 42 is arranged along the side wall of the roadway 1 and extends through the wind curtain into the dust area near the continuous mining machine 2, the dust removal air blower 41 is started, and the dust in the dust area is extracted and collected by the dust collection air tank 43; when the dust concentration sensor 52 detects that the dust concentration increases, the control box 51 controls the dust removal air blower 41 to automatically increase the air extraction amount;

[0049] Step four: system adjustment; the monitoring assembly 55 for monitoring the mining face 1111 area is installed on the continuous mining machine 22, and the monitoring assembly 55 controls the working state of the wind curtain assembly 33 and the dust removal assembly 44; the wind speed sensor 53 detects the wind speed of the mining face 11, and then controls the opening and closing of the first air port 33 and the wind speed; the dust concentration sensor 52 monitors the dust concentration of the mining face 11, and then controls the size of the dust area and the dust removal efficiency of the dust removal assembly 4; meanwhile, the control box 51 can also control the first trolley 311, the second trolley 313 and the third trolley 45 to drive the dust removal assembly 4 and the air curtain assembly to move with the continuous mining machine 2, so as to maintain a stable dust control area behind the continuous mining machine 2, ensure the combination of mining and dust control, and realize safe mining.

[0050] Further optimization scheme, in step four, the monitoring component 5 is used for monitoring the wind speed and dust concentration of the mining face 11 area, and then controlling the wind curtain intensity and angle and moving speed of the wind curtain assembly 3, and controlling the dust removal speed and moving speed of the dust removal assembly 4.

[0051] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0052] The above embodiments only describe the preferred modes of the present application, and do not limit the scope of the present application. Any modification and improvement of the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope of the present application.

Claims

1. A wind curtain dust control device for a large cross section fully mechanized coal mining face, characterized in that, The utility model relates to a continuous mining face dust removal device, including: The wind curtain component (3) includes the wind curtain generating device (31) that arranges in the roadway (1), and the wind curtain generating device (31) is located the one end of continuous miner (2) away from the continuous mining face (11);The air supply part of the wind curtain generating device (31) is slidably connected at the top of the roadway (1); The dust removal component (4) is located the one side of the wind curtain generating device (31) away from the continuous miner (2), and the dust removal component (4) is slidably connected at the top of the roadway (1), and the import of dust removal component (4) extends into the wind curtain generating device (31) and the continuous mining face (11) between;The wind curtain generating device (31) includes two symmetrical air distribution pipes (32), and two air distribution pipes (32) are slidably connected with the two side walls of the roadway (1) respectively;The side of air distribution pipe (32) towards the continuous miner (2) is provided with first air port (33);The opposite side of two air distribution pipes (32) is provided with a plurality of second air ports (34) respectively;The top of two air distribution pipes (32) is communicated with the pressure wind cylinder (35), and the pressure wind cylinder (35) is communicated with the air supply part;The air supply part includes the air supply pipe (38) that is communicated with the pressure wind cylinder (35), and the other end of air supply pipe (38) is provided with air supply fan (39);The first sliding rail (310) along the roadway (1) is installed at the top of the roadway (1), the first sliding rail (310) is slidably connected with the first trolley (311), and the air supply fan (39) is installed at the bottom of the first trolley (311);The second sliding rail (312) along the roadway (1) is installed at the two sides of the roadway (1) respectively, and the second sliding rail (312) is slidably connected with the second trolley (313), and the air distribution pipe (32) is installed on the second trolley (313);The guide rail (314) corresponding with the bottom of air distribution pipe (32) is installed at the bottom of the roadway (1), and the guide wheel (315) is installed at the bottom of air distribution pipe (32), and the guide wheel (315) is in rolling contact with the guide rail (314); The monitoring assembly (5) is installed on the continuous miner (2), and the monitoring assembly (5) is electrically connected with the air supply part and the dust removal component (4) respectively, and the air supply fan (39), the first trolley (311) and the second trolley (313) are electrically connected with the monitoring assembly (5) respectively.

2. The air curtain dust control device for large cross section fully mechanized coal mining face according to claim 1, characterized in that: The first air deflector (36) is installed at the one end of air distribution pipe (32) towards the continuous mining face (11), and the first air deflector (36) is correspondingly arranged with the first air port (33);The side of air distribution pipe (32) provided with the second air port (34) is provided with a plurality of second air deflectors (37), and the second air deflector (37) is symmetrically fixed on the two sides of the second air port (34).

3. The air curtain dust control device for large cross section longwall mining faces according to claim 2, characterized in that: The first deflector (36) and the sidewall of the air distribution pipe (32) are provided with a first adjusting device (316), and the second deflector (37) and the sidewall of the air distribution pipe (32) are provided with a second adjusting device (317). The first adjusting device (316) and the second adjusting device (317) are electrically connected with the monitoring assembly (5).

4. The air curtain dust control device for large cross section longwall mining faces according to claim 1, characterized in that: The dust removal assembly (4) comprises a dust removal fan (41) slidably connected to the top end of the roadway (1), and the dust removal fan (41) is located on the side of the air curtain generating device (31) away from the continuous mining face (11). The dust removal fan (41) is provided with an air suction pipe (42) communicated with the air inlet of the dust removal fan (41), and the air suction pipe (42) is provided with an air suction pipe (42) communicated with the air inlet of the dust removal fan (41). The dust removal fan (41) is provided with a dust collection air tank (43) communicated with the air outlet of the dust removal fan (41).

5. The air curtain dust control device for large cross section longwall mining faces according to claim 4, characterized in that: The top end of the roadway (1) is provided with a third sliding rail (44) arranged along the roadway (1), and the third sliding rail (44) is provided with a third sliding rail (44) arranged along the roadway (1). The third sliding rail (44) is provided with a third sliding rail (44) arranged along the roadway (1). The dust removal fan (41) and the dust collection air tank (43) are respectively installed at the bottom end of the third sliding rail (45). The third sliding rail (44) is slidably connected with a supporting pulley (46), and the air inlet end of the air suction pipe (42) is suspended below the supporting pulley (46).

6. The method for controlling dust by air curtain for large cross section fully mechanized coal mining face, the air curtain dust control device for large cross section fully mechanized coal mining face according to any one of claims 1-5, characterized in that, The method comprises the following steps: Step one: continuous mining machine (2) tunneling; driving the continuous mining machine (2) to tunnel in the continuous mining face (11) in the roadway (1); Step two: air curtain dust control; the air curtain assembly (3) located behind the continuous mining machine (2) forms an air curtain behind the continuous mining machine (2) to block dust; Step three: air suction and dust removal; the inlet of the dust removal assembly (4) extends between the continuous mining face (11) and the air curtain to remove dust in the roadway (1); Step four: system adjustment; the monitoring assembly (5) installed on the continuous mining machine (2) is used for monitoring the continuous mining face (11) region, and the monitoring assembly (5) controls the working state of the air curtain assembly (3) and the dust removal assembly (4).

7. The method for dust control by air curtain for large cross section fully mechanized coal mining face according to claim 6, characterized in that: In step four, the monitoring assembly (5) is used for monitoring the wind speed and dust concentration of the continuous mining face (11) region, and then controlling the air curtain intensity and angle and moving speed of the air curtain assembly (3), and controlling the dust removal speed and moving speed of the dust removal assembly (4).

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