A mine air door air volume automatic adjustment device

Abstract

The present invention relates to the technical field of mine air doors, and discloses an automatic air volume adjustment device for mine air doors, comprising a door frame, on which two door panels are rotatably mounted, and further comprising: two outer covers, which are respectively fixed on the two door panels; a number of vents, which are divided into two groups of the same number and are respectively opened on the two door panels; a number of air ducts, which are divided into two groups of the same number and are respectively opened on the two outer covers; a number of blocks, which are divided into two groups of the same number and are respectively opened on the two door panels, and are respectively arranged opposite to the number of vents. The present invention can accurately adjust the position of the windshield by controlling the moving stroke of the rack, thereby accurately controlling the opening and closing degree of the vents, and realizing precise adjustment of the air volume. Due to the structural design, the mechanical wear and loosening of the shutter blades are avoided, and the maintenance frequency and cost are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mine air doors, and in particular to an automatic air volume regulating device for mine air doors. Background Art

[0002] The damper is the main regulating facility in the ventilation system. The construction of the damper must ensure that the mine airflow can be distributed according to demand, and at the same time prevent the airflow from short-circuiting when the damper is open, and ensure that it is tightly sealed everywhere without air leakage when the damper is closed. The damper can not only distribute the airflow according to demand, but also provide sufficient convenience for pedestrians and transport vehicles in the tunnel. When pedestrians or transport vehicles pass by, it can be opened automatically and safely, and can be automatically and tightly closed after the pedestrians or transport vehicles pass by.

[0003] After searching, the Chinese patent with the announcement number CN213627642U discloses an underground intelligent regulating damper, which includes a fixed frame and a regulating damper, one side of the regulating damper is hinged with the fixed frame, the regulating damper includes a door frame, at least two horizontally arranged regulating blades are arranged in the door frame, and the regulating blades are arranged up and down in the door frame. A follower shaft is fixedly provided on the side of the regulating blade hinged with the fixed frame toward the regulating damper, and the follower shaft is rotatably connected with the door frame. An active shaft is fixedly provided on one end of the regulating blade facing away from the follower shaft, and the active shaft and the follower shaft of the same regulating blade are arranged horizontally and in the same line. The active shafts are linked by a linkage mechanism, and one of the active shafts is driven to rotate by an electric regulating actuator and drives the other active shafts to rotate through the linkage mechanism. The above scheme has the effect of conveniently adjusting the ventilation area. However, the above scheme still has the following shortcomings when it is actually used:

[0004] The above scheme adjusts the air volume through the shutter structure. In actual use, when the adjusting blades are fixed at a certain angle, the airflow flowing in the mine will continuously impact the adjusting blades. If this continues for a long time, the adjusting blades are prone to shaking, which results in the inability to accurately control the angle of the adjusting blades during subsequent adjustments. If the adjusting blades shake during long-term use, it may cause unstable air volume adjustment, thereby affecting the ventilation effect and airflow distribution of the mine. This instability may cause an increase in the concentration of harmful gases in the mine, affecting operational safety and air quality. In addition, frequent adjustments and maintenance may also increase operating costs and workload.

[0005] Therefore, it is necessary to design a mine air door air volume automatic adjustment device to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an automatic air volume adjustment device for a mine air door.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A mine air door air volume automatic adjustment device comprises a door frame, two door panels are rotatably mounted on the door frame, and further comprises:

[0009] Two outer covers, the two outer covers are respectively fixed on the two door panels;

[0010] A plurality of vents, wherein the plurality of vents are divided into two groups of equal number and are respectively opened on two door panels;

[0011] A plurality of air ducts, wherein the plurality of air ducts are divided into two groups of equal number and are respectively opened on two outer covers;

[0012] A plurality of stoppers, wherein the plurality of stoppers are divided into two groups of equal number and are respectively arranged on two door panels, and the plurality of stoppers are respectively arranged opposite to the plurality of vents;

[0013] A plurality of windshield structures, wherein the plurality of windshield structures are divided into two groups of equal number and are respectively provided on two door panels, and the plurality of windshield structures are respectively provided opposite to the plurality of vents;

[0014] A plurality of driving structures, wherein the plurality of driving structures act on a plurality of windshield structures respectively;

[0015] A plurality of transmission structures, wherein the plurality of transmission structures act on the plurality of drive structures respectively;

[0016] Two movable structures are respectively arranged on two door panels.

[0017] As a preferred technical solution of the present invention, the wind shielding structure comprises:

[0018] Wind deflector;

[0019] A slideway, wherein the slideway is provided on the windshield;

[0020] A slide plate, wherein the slide plate is slidably disposed in the slideway, and both ends of the slide plate extend to the outside of the slideway;

[0021] A limiting plate, wherein the limiting plate is fixed to the bottom end of the slide plate;

[0022] Spring 1, one end of the spring 1 is connected to the inner surface of the slideway, and the other end of the spring 1 is connected to the slide plate.

[0023] As a preferred technical solution of the present invention, the driving structure includes:

[0024] Two fixing plates, both of which are fixed on the door plate, and the two fixing plates are arranged opposite to each other;

[0025] A threaded rod, the threaded rod being rotatably mounted between two fixed plates;

[0026] A moving block, wherein the moving block is fixed to the top of the slide plate and the moving block is threadedly sleeved on the threaded rod;

[0027] A limiting rod is fixed between two fixing plates, and the moving block is slidably sleeved on the limiting rod.

[0028] As a preferred technical solution of the present invention, the transmission structure includes:

[0029] A bracket, wherein the bracket is fixed to a side of the door panel;

[0030] Axle rod 1, wherein the shaft rod 1 is rotatably mounted on the bracket;

[0031] A second shaft rod, one end of which is fixedly connected to the first shaft rod, and the other end of which is fixedly connected to the threaded rod;

[0032] Axle rod three, the shaft rod three is rotatably mounted on the bracket;

[0033] Two bevel gears, one of which is fixedly sleeved on the shaft rod one, and the other is fixedly sleeved on the shaft rod three, and the two bevel gears are meshed with each other;

[0034] A driving gear is fixedly sleeved on an end of the shaft rod 3 away from the bracket.

[0035] As a preferred technical solution of the present invention, the mobile structure includes:

[0036] A fixing frame, wherein the fixing frame is fixed to a side surface of the door panel;

[0037] Two wheel axles, the two wheel axles are rotatably mounted on two ends of the fixing frame respectively;

[0038] A motor, wherein the motor is mounted on one end of the fixing frame, and an output shaft of the motor is fixedly connected to one of the wheel axles;

[0039] Two transmission wheels, the two transmission wheels are respectively fixedly sleeved on two wheel axles;

[0040] A transmission belt, wherein the two transmission wheels are connected to each other through the transmission belt;

[0041] A lifting lug, wherein the lifting lug is fixedly sleeved on the transmission belt;

[0042] A movable seat, wherein the movable seat is fixed on the lifting lug;

[0043] A rack is fixed on the side of the moving seat.

[0044] As a preferred technical solution of the present invention, the wind shield is arranged directly opposite to the vent.

[0045] As a preferred technical solution of the present invention, the second shaft rod and the threaded rod are coaxially arranged.

[0046] As a preferred technical solution of the present invention, the side surface of the slide plate and the inner surface of the slideway are in contact with each other.

[0047] As a preferred technical solution of the present invention, a plurality of sealing bags and a plurality of inflatable structures are arranged on the door panel, a plurality of the inflatable structures are arranged opposite to a plurality of moving blocks respectively, a plurality of the sealing bags are arranged opposite to a plurality of vents respectively, and the sealing bags are annular structures with a hollow interior.

[0048] As a preferred technical solution of the present invention, the inflatable structure comprises:

[0049] A sealing cylinder, wherein the sealing cylinder is fixed to a side surface of the fixing plate;

[0050] A sliding plug, wherein the sliding plug is sealingly and slidingly connected to the inner surface of the sealing cylinder;

[0051] Spring 2, one end of the spring 2 is connected to the inner surface of the sealing cylinder, and the other end of the spring 2 is connected to the sliding plug;

[0052] A connecting rod, one end of which is fixedly connected to the sliding plug, and the other end of which extends to the outside of the sealing cylinder, and the sealing cylinder is provided with an escape opening adapted to the connecting rod;

[0053] A connecting pipe, one end of which is connected to the interior of the sealing cylinder, and the other end of which is connected to the sealing bag.

[0054] The present invention has the following beneficial effects:

[0055] 1. By controlling the movement of the rack, the position of the windshield can be accurately adjusted, thereby accurately controlling the opening and closing degree of the vents and achieving precise adjustment of the air volume. The structural design avoids mechanical wear and loosening of the shutter blades, reducing maintenance frequency and cost. Compared with traditional shutters, this adjustment method reduces the problem of loose blades and ensures the stability and reliability of air volume adjustment.

[0056] 2. When inflated, the sealing bag can fit tightly against the side of the windshield, significantly improving the sealing effect between the windshield and the door panel. This enhances the shielding ability of the windshield to the vents and reduces air leakage. In addition, during the inflation of the sealing bag, the windshield remains stationary, avoiding friction between the sealing bag and the windshield, thus preventing wear of the sealing bag and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 This is a schematic structural diagram of a mine air door air volume automatic adjustment device proposed by the present invention;

[0058] Figure 2 This is a schematic diagram of the structure of a door panel in a mine air door air volume automatic adjustment device proposed by the present invention;

[0059] Figure 3 This is a schematic diagram of the structure of a door plate and a plurality of wind shield plates in a mine air door air volume automatic adjustment device proposed by the present invention;

[0060] Figure 4 A schematic diagram of the connection structure between the wind shield structure and the driving structure in the mine air door air volume automatic adjustment device proposed by the present invention Figure 1 ;

[0061] Figure 5 A schematic diagram of the connection structure between the wind shield structure and the driving structure in the mine air door air volume automatic adjustment device proposed by the present invention Figure 2 ;

[0062] Figure 6 for Figure 4 A partial enlarged schematic diagram of point C in the middle;

[0063] Figure 7 for Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0064] Figure 8 for Figure 2 A partial enlarged schematic diagram in the middle;

[0065] Fig. 9 for Figure 5 The partial enlarged schematic diagram of point D in the middle;

[0066] Fig.10 The present invention is a schematic diagram of the decomposed structure of a moving structure in an automatic air volume adjustment device for a mine air door.

[0067] In the figure: 1 is a door frame, 2 is a door panel, 3 is an outer cover, 4 is a vent, 5 is an air duct, 61 is a wind deflector, 62 is a slideway, 63 is a slide plate, 64 is a limit plate, 65 is a spring 1, 71 is a fixed plate, 72 is a threaded rod, 73 is a moving block, 81 is a bracket, 82 is a shaft rod 1, 83 is a shaft rod 2, 84 is a shaft rod 3, 85 is a bevel gear, 86 is a driving gear, 91 is a fixed frame, 92 is a wheel axle, 93 is a motor, 94 is a transmission wheel, 95 is a transmission belt, 96 is a lifting ear, 97 is a moving seat, 98 is a rack, 10 is a sealing bag, 101 is a sealing cylinder, 102 is a sliding plug, 103 is a spring 2, and 104 is a connecting rod. DETAILED DESCRIPTION

[0068] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0069] Reference Figure 1-10 , a mine air door air volume automatic adjustment device, comprising a door frame 1, on which two door panels 2 are rotatably mounted, and also comprising: two outer covers 3, which are respectively fixed on the two door panels 2; a plurality of vents 4, which are divided into two groups of equal number and are respectively opened on the two door panels 2; a plurality of air ducts 5, which are divided into two groups of equal number and are respectively opened on the two outer covers 3; a plurality of blocks, which are divided into two groups of equal number and are respectively opened on the two door panels 2, and the plurality of blocks are respectively arranged opposite to the plurality of vents 4, and in an initial state, a plurality of wind shields 61 are respectively arranged opposite to the plurality of vents 4, and at this time, the wind shields 61 can block the vents 4, and the airflow cannot pass through the vents 4, and in addition, a movable seat 97 is located at the top of a fixed frame 91;

[0070] The mine air door air volume automatic regulating device also includes a plurality of wind shield structures, which are divided into two groups of equal number and are respectively arranged on two door panels 2, and the plurality of wind shield structures are respectively arranged opposite to the plurality of vents 4, and the wind shield structures include: a wind shield plate 61; a slideway 62, the slideway 62 is arranged on the wind shield plate 61, and the wind shield plate 61 is arranged opposite to the vents 4; a slide plate 63, the slide plate 63 is slidably arranged in the slideway 62, both ends of the slide plate 63 extend to the outside of the slideway 62, and the side surface of the slide plate 63 and the inner surface of the slideway 62 are mutually fitted; a limit plate 64, the limit plate 64 is fixed to the bottom end of the slide plate 63; a spring 65, one end of the spring 65 is fixed to the bottom end of the slideway 62 The inner surface of the slide 62 is connected, and the other end is connected to the slide plate 63. Under the limiting action of the limiting rod, the threaded rod 72 can drive the moving block 73 to move. When moving, the moving block 73 can first drive the slide plate 63 to move, so that the slide plate 63 moves from one end of the slideway 62 to the other end of the slideway 62. In this process, the movement of the slide plate 63 will not drive the wind shield 61 to move. When the slide plate 63 moves to the end position of the slideway 62, the slide plate 63 fits with the inner wall of the slideway 62. At this time, the slide plate 63 can drive the wind shield 61 to move when it moves. When the wind shield 61 moves, the wind shield 61 is staggered with the vent 4. At this time, the wind shield 61 no longer blocks the vent 4.

[0071] The mine air door air volume automatic adjustment device also includes a plurality of driving structures, which act on a plurality of wind shielding structures respectively. The driving structures include: two fixed plates 71, which are both fixed on the door plate 2 and are arranged opposite to each other; a threaded rod 72, which is rotatably installed between the two fixed plates 71; a moving block 73, which is fixed on the top of the slide plate 63 and is threadedly sleeved on the threaded rod 72; a limiting rod, which is fixed between the two fixed plates 71 and is slidably sleeved on the limiting rod;

[0072] The mine air door air volume automatic adjustment device also includes a plurality of transmission structures, which act on a plurality of drive structures respectively. The transmission structures include: a bracket 81, which is fixed to the side of the door panel 2; a shaft rod 82, which is rotatably mounted on the bracket 81; a shaft rod 83, one end of which is fixedly connected to the shaft rod 82, and the other end is fixedly connected to the threaded rod 72, and the shaft rod 83 and the threaded rod 72 are coaxially arranged; a shaft rod 3 84, which is rotatably mounted on the bracket 81; two bevel gears 85, one of which is The wheel 85 is fixedly sleeved on the shaft rod 1 82, and another bevel gear 85 is fixedly sleeved on the shaft rod 3 84, and the two bevel gears 85 are meshed with each other; the driving gear 86 is fixedly sleeved on the end of the shaft rod 3 84 away from the bracket 81, and when the driving gear 86 rotates, it can drive the shaft rod 3 84 to rotate, and when the shaft rod 3 84 rotates, it can drive the bevel gear 85 thereon to rotate, so that the other bevel gear 85 drives the shaft rod 1 82 to rotate, and when the shaft rod 1 82 rotates, it can drive the threaded rod 72 to rotate through the shaft rod 2 83;

[0073] The mine air door air volume automatic adjustment device also includes two moving structures, which are respectively arranged on the two door panels 2, and the moving structures include: a fixed frame 91, the fixed frame 91 is fixed to the side of the door panel 2; two wheel shafts 92, the two wheel shafts 92 are respectively rotatably mounted on the two ends of the fixed frame 91; a motor 93, the motor 93 is mounted on one end of the fixed frame 91, and the output shaft of the motor 93 is fixedly connected to one of the wheel shafts 92; two transmission wheels 94, the two transmission wheels 94 are respectively fixedly sleeved on the two wheel shafts 92; a transmission belt 95, between the two transmission wheels 94 The transmission belt 95 is connected to the transmission belt 95; the ear 96 is fixedly mounted on the transmission belt 95; the movable seat 97 is fixed on the ear 96; the rack 98 is fixed on the side of the movable seat 97. When the motor 93 is running, it can drive the corresponding wheel shaft 92 to rotate, and the rotating wheel shaft 92 can drive the transmission wheel 94 thereon to rotate. The rotating transmission wheel 94 cooperates with another transmission wheel 94 to drive the transmission belt 95 to rotate. When the transmission belt 95 rotates, the ear 96 on it can move, which makes the ear 96 drive the movable seat 97 moves from top to bottom. During the downward movement of the movable seat 97, the rack 98 meshes with a plurality of drive gears 86 arranged vertically one by one. During this process, the rack 98 first meshes with the drive gear 86 at the top and drives it to rotate. When the rack 98 passes through the drive gear 86 and rotates the drive gear 86, the windshield 61 can move, thereby opening the vent 4. Therefore, the staff can control the number of windshields 61 moved by controlling the movement stroke of the rack 98. When the number of opened vents 4 increases, the windshield 61 moves. When the number of opened vents 4 decreases, the ventilation volume of the door panel 2 will increase. When the number of opened vents 4 decreases, the ventilation volume of the door panel 2 will decrease. When the wind deflector 61 needs to be closed, the staff only needs to control the rack 98 to move from bottom to top. When the rack 98 moves in the opposite direction, the threaded rod 72 will rotate in the opposite direction. The threaded rod 72 rotates to drive the moving block 73 to move. The moving block 73 drives the slide plate 63 to move. When the slide plate 63 moves, it cannot overcome the elastic force of the spring 1 65, so that the slide plate 63 can directly push the wind deflector 61 to move through the spring 1 65 until the wind deflector 61 blocks the vent 4.

[0074] The door panel 2 is provided with a plurality of sealing bags 10 and a plurality of inflatable structures, the plurality of inflatable structures are respectively arranged opposite to the plurality of moving blocks 73, the plurality of sealing bags 10 are respectively arranged opposite to the plurality of vents 4, the sealing bags 10 are annular structures with a hollow interior, and the inflatable structures include: a sealing cylinder 101, the sealing cylinder 101 is fixed to the side of the fixed plate 71; a sliding plug 102, the sliding plug 102 is sealingly and slidably connected to the inner surface of the sealing cylinder 101; a spring 103, one end of the spring 103 is connected to the sealing cylinder 101 The inner surface of the windshield 61 is connected, and the other end is connected to the sliding plug 102; a connecting rod 104, one end of the connecting rod 104 is fixedly connected to the sliding plug 102, and the other end extends to the outside of the sealing cylinder 101, and the sealing cylinder 101 is provided with a avoidance port adapted to the connecting rod 104; a connecting pipe, one end of the connecting pipe is connected to the inside of the sealing cylinder 101, and the other end is connected to the sealing bag 10. When the windshield 61 is closed, the windshield 61 will first contact the block. When the windshield 61 contacts the block, When the door 7 is touched, the windshield 61 will stop moving, but the moving block 73 will not stop moving. As the moving block 73 continues to move, the moving block 73 will drive the slide plate 63 to move, which makes the slide plate 63 move in the slideway 62. At the same time, the moving block 73 can also squeeze the connecting rod 104, so that the connecting rod 104 drives the sliding plug 102 to move. When the sliding plug 102 moves, the gas inside the sealing tube 101 can be discharged into the sealing bag 10 through the connecting pipe, so that the sealing bag 10 is inflated. When the sealing bag 10 is inflated, it can fit with the side of the windshield 61. In this case, the inflated sealing bag 10 can increase the sealing performance between the windshield 61 and the door panel 2, and improve the shielding effect of the windshield 61 on the vent 4. It is worth mentioning that during the process of the sealing tube 101 inflating the sealing bag 10, the windshield 61 is in a stationary state. This design can avoid friction between the sealing bag 10 and the windshield 61 and prevent the sealing bag 10 from being worn.

[0075] The specific working principle of the present invention is as follows:

[0076] When the mine air door air volume automatic adjustment device proposed by the present invention is used, in the initial state, a plurality of wind shields 61 are respectively arranged opposite to a plurality of vents 4, and at this time, the wind shields 61 can block the vents 4, and the airflow cannot pass through the vents 4. In addition, the movable seat 97 is located on the top of the fixed frame 91;

[0077] Since the two door panels 2 and the structures thereon are exactly the same, only the air volume adjustment principle of any one of the door panels 2 is explained here. When adjustment is needed, the staff starts the motor 93. When the motor 93 is running, it can drive the corresponding wheel shaft 92 to rotate. The rotating wheel shaft 92 can drive the transmission wheel 94 thereon to rotate. The rotating transmission wheel 94 cooperates with another transmission wheel 94 to drive the transmission belt 95 to rotate. When the transmission belt 95 rotates, the ear 96 thereon can move, which makes the ear 96 drive the moving seat 97 to move from top to bottom. In the process of the moving seat 97 moving downward, the rack 98 successively meshes with a number of drive gears 86 arranged up and down. In this process, the rack 98 will first mesh with the uppermost drive gear 86 and drive it to rotate. When the drive gear 86 rotates, it can drive the shaft rod 3 84 to rotate. When the shaft rod 3 84 rotates, it can drive the bevel gear 85 thereon to rotate, which makes the other bevel gear 85 drive the shaft rod 1 82 to rotate. When the shaft rod 1 82 rotates, it can drive the screw through the shaft rod 2 83. The threaded rod 72 rotates, and under the limiting action of the limiting rod, the threaded rod 72 can drive the moving block 73 to move. When moving, the moving block 73 can first drive the slide plate 63 to move, so that the slide plate 63 moves from one end of the slideway 62 to the other end of the slideway 62. In this process, the slide plate 63 will not drive the windshield 61 to move. When the slide plate 63 moves to the end position of the slideway 62, the slide plate 63 fits with the inner wall of the slideway 62. At this time, when the slide plate 63 moves, it can drive the windshield 61 to move. When the windshield 61 moves , the wind shield 61 is staggered with the vent 4, and at this time the wind shield 61 no longer blocks the vent 4. Therefore, when the rack 98 passes through the drive gear 86 and rotates the drive gear 86, the wind shield 61 can move, so that the vent 4 is opened. Therefore, the staff can control the number of moving wind shields 61 by controlling the movement stroke of the rack 98. When the number of opened vents 4 increases, the ventilation volume of the door panel 2 will increase, and when the number of opened vents 4 decreases, the ventilation volume of the door panel 2 will decrease.

[0078] When the wind shield 61 needs to be closed, the staff only needs to control the rack 98 to move from bottom to top. When the rack 98 moves in the opposite direction, the threaded rod 72 will rotate in the opposite direction. The threaded rod 72 rotates to drive the moving block 73 to move. The moving block 73 drives the slide plate 63 to move. When the slide plate 63 moves, it cannot overcome the elastic force of the spring 65, so that the slide plate 63 can directly push the wind shield 61 to move through the spring 65 until the wind shield 61 blocks the vent 4.

[0079] The door panel 2 is provided with a sealing bag 10, which is an annular and hollow structure. When the windshield 61 is closed, the windshield 61 will first contact the block. When the windshield 61 contacts the block, the windshield 61 will stop moving, but the moving block 73 will not stop moving. With the continued movement of the moving block 73, the moving block 73 will drive the slide 63 to move, so that the slide 63 moves in the slideway 62. At the same time, the moving block 73 can also squeeze the connecting rod 104, so that the connecting rod 104 drives the sliding plug 102 to move, and the sliding plug 102 can move the sealing The gas inside the sealing tube 101 is discharged into the sealing bag 10 through the connecting pipe, so that the sealing bag 10 is inflated. When the sealing bag 10 is inflated, it can fit with the side of the wind shield 61. In this case, the inflated sealing bag 10 can increase the sealing performance between the wind shield 61 and the door panel 2, and improve the shielding effect of the wind shield 61 on the vent 4. It is worth mentioning that during the process of the sealing tube 101 inflating the sealing bag 10, the wind shield 61 is in a stationary state. This design can avoid friction between the sealing bag 10 and the wind shield 61, and prevent the sealing bag 10 from being worn.

[0080] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mine air door air volume automatic adjustment device, comprising a door frame (1), on which two door panels (2) are rotatably mounted, characterized in that: Also includes: Two outer covers (3), the two outer covers (3) being fixed on the two door panels (2) respectively; A plurality of ventilation openings (4), wherein the plurality of ventilation openings (4) are divided into two groups of equal number and are respectively opened on the two door panels (2); A plurality of air ducts (5), wherein the plurality of air ducts (5) are divided into two groups of equal number and are respectively opened on two outer covers (3); a plurality of stoppers, the plurality of stoppers being divided into two groups of equal number and respectively disposed on the two door panels (2), the plurality of stoppers being respectively disposed opposite to the plurality of vents (4), wherein during the process of the wind shield (61) being closed, the wind shield (61) will first contact the stoppers, and when the wind shield (61) contacts the stoppers, the wind shield (61) will stop moving; A plurality of windshield structures, the plurality of windshield structures being divided into two groups of equal number and respectively provided on two door panels (2), and the plurality of windshield structures being respectively provided opposite to the plurality of ventilation openings (4); A plurality of driving structures, wherein the plurality of driving structures act on the plurality of windshield structures respectively, and when the rack (98) in the driving structure moves in the reverse direction, the threaded rod (72) rotates in the reverse direction, the threaded rod (72) rotates, drives the moving block (73) to move, and the moving block (73) drives the slide plate (63) to move; A plurality of transmission structures, wherein the plurality of transmission structures act on the plurality of drive structures respectively; Two movable structures, the two movable structures are respectively arranged on the two door panels (2), and the movable structures are used to control the movement stroke of the rack, so as to accurately adjust the position of the wind deflector, thereby accurately controlling the opening and closing degree of the vents, and realizing precise adjustment of the air volume; The windshield structure comprises: Wind deflector (61); a slideway (62), wherein the slideway (62) is provided on the windshield (61); A slide plate (63), the slide plate (63) being slidably disposed in the slideway (62), with both ends of the slide plate (63) extending to the outside of the slideway (62); A limiting plate (64), wherein the limiting plate (64) is fixed to the bottom end of the sliding plate (63); Spring 1 (65), one end of the spring 1 (65) being connected to the inner surface of the slideway (62), and the other end of the spring 1 (65) being connected to the slide plate (63); The driving structure comprises: Two fixing plates (71), the two fixing plates (71) are both fixed on the door panel (2), and the two fixing plates (71) are arranged opposite to each other; A threaded rod (72), wherein the threaded rod (72) is rotatably mounted between the two fixed plates (71); A moving block (73), wherein the moving block (73) is fixed to the top of the slide plate (63), and the moving block (73) is threadedly sleeved on the threaded rod (72); A limit rod, the limit rod being fixed between two fixed plates (71), and the moving block (73) being slidably sleeved on the limit rod; The mobile structure comprises: A fixing frame (91), wherein the fixing frame (91) is fixed to a side surface of the door panel (2); Two wheel axles (92), the two wheel axles (92) being rotatably mounted on two ends of the fixing frame (91) respectively; a motor (93), the motor (93) being mounted on one end of the fixing frame (91), and the output shaft of the motor (93) being fixedly connected to one of the wheel axles (92); Two transmission wheels (94), the two transmission wheels (94) being fixedly sleeved on the two wheel axles (92) respectively; A transmission belt (95), wherein the two transmission wheels (94) are connected to each other by the transmission belt (95); A lifting lug (96), wherein the lifting lug (96) is fixedly sleeved on the transmission belt (95); A movable seat (97), wherein the movable seat (97) is fixed on the lifting lug (96); A rack (98), wherein the rack (98) is fixed to a side surface of the movable seat (97); The door panel (2) is provided with a plurality of sealing bags (10) and a plurality of inflatable structures, wherein the plurality of inflatable structures are respectively arranged opposite to the plurality of moving blocks (73), and the plurality of sealing bags (10) are respectively arranged opposite to the plurality of vents (4), wherein the sealing bag (10) is an annular structure with a hollow interior, wherein the moving block (73) can also squeeze the connecting rod (104) in the inflatable structure, so that the connecting rod (104) drives the sliding plug (102) to move, and when the sliding plug (102) moves, the gas inside the sealing cylinder (101) can be discharged into the sealing bag (10) through the connecting pipe, so that the sealing bag (10) is inflated and expanded, and when the sealing bag (10) is inflated, it can fit with the side surface of the windshield (61), thereby completing the inflation of the sealing cylinder (101) into the sealing bag (10); The inflatable structure comprises: A sealing cylinder (101), wherein the sealing cylinder (101) is fixed to a side surface of the fixing plate (71); A sliding plug (102), the sliding plug (102) being sealingly slidably connected to the inner surface of the sealing cylinder (101); Spring 2 (103), one end of the spring 2 (103) being connected to the inner surface of the sealing cylinder (101), and the other end of the spring 2 (103) being connected to the sliding plug (102); A connecting rod (104), one end of the connecting rod (104) being fixedly connected to the sliding plug (102), and the other end of the connecting rod (104) extending to the outside of the sealing cylinder (101); the sealing cylinder (101) is provided with an escape opening adapted to the connecting rod (104); A connecting pipe, one end of which is connected to the interior of the sealing cylinder (101), and the other end of which is connected to the sealing bag (10).

2. The automatic air volume adjustment device for mine air door according to claim 1, characterized in that: The transmission structure comprises: A bracket (81), wherein the bracket (81) is fixed to a side surface of the door panel (2); Axle rod one (82), wherein the shaft rod one (82) is rotatably mounted on the bracket (81); A second shaft rod (83), one end of the second shaft rod (83) being fixedly connected to the first shaft rod (82), and the other end of the second shaft rod (83) being fixedly connected to the threaded rod (72); Axle rod three (84), the shaft rod three (84) being rotatably mounted on the bracket (81); Two bevel gears (85), one of the bevel gears (85) is fixedly sleeved on the shaft rod one (82), and the other bevel gear (85) is fixedly sleeved on the shaft rod three (84), and the two bevel gears (85) are meshed with each other; A driving gear (86) is fixedly sleeved on an end of the shaft rod (84) away from the bracket (81).

3. The automatic air volume adjustment device for mine air door according to claim 1, characterized in that: The wind shield (61) is arranged directly opposite the ventilation opening (4).

4. The automatic air volume adjustment device for mine air door according to claim 2, characterized in that: The second shaft rod (83) and the threaded rod (72) are coaxially arranged.

5. The automatic air volume adjustment device for mine air door according to claim 1, characterized in that: The side surface of the slide plate (63) and the inner surface of the slideway (62) are in contact with each other.

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