Ventilation device for deep well

Abstract

The invention relates to the technical field of deep well ventilation, in particular to a ventilation device for a deep well, the ventilation device comprises a ventilation device main body and a ventilation device fan frame, the ventilation device main body is fixedly connected to the interior of the ventilation device fan frame, and the rear end of the ventilation device fan frame is fixedly connected with two parallel fixed long plates; a rubber cleaning brush is arranged between the two fixed long plates, a servo motor drives a chain wheel at the rear end to rotate anticlockwise, a long gear strip drives a rectangular limiting plate to descend when descending, the rectangular limiting plate extrudes a reset spring when descending, and the reset spring drives the rectangular limiting plate and the long gear strip to reset. The gear strip can drive the rubber cleaning brush to clean the rear surface of the ventilation device body again, the purpose that the rubber cleaning brush cleans the ventilation device body in a reciprocating mode is achieved, the ventilation device body is prevented from being eroded by dust, and the service life of the ventilation device body is prolonged. And the service life of the ventilation device is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of deep well ventilation, and particularly to a ventilation device for deep wells. Background Art

[0002] The ventilation device for deep wells is a key equipment to ensure the safety of deep well operations and the environmental quality. Its core function is to maintain the air circulation and quality stability in the well through effective ventilation. The device can continuously supply fresh air into the deep well, while discharging dust, harmful gases such as methane, carbon monoxide, etc., and humid air, reducing the concentration of dangerous gases in the well, avoiding safety accidents such as explosions and poisoning, and improving the humid and stuffy environment, enhancing the comfort and work efficiency of operators. In addition, some ventilation devices also have functions of air filtration and temperature adjustment, which can filter dust particles, appropriately heat the air sent into the well in winter, and reduce the supply air temperature through a cooling system in summer, creating more suitable environmental conditions for deep well operations and ensuring the continuity and safety of deep well mining, construction and other operations.

[0003] However, in the process of implementing the above technical solutions, it is found that at least the following technical problems exist:

[0004] There are usually operations such as ore crushing and rock layer excavation in deep wells, which will generate a large amount of dust particles. And the ventilation device needs to continuously inhale the air in the well to complete ventilation. The dust carried by the air may adhere to the device along with the air flow. If there are sulfides in the deep well environment, such as acidic dusts like decomposition products of hydrogen sulfide and nitrogen oxides in mines, or acidic gases in the air, such as sulfur dioxide combined with dust, the dust may form acidic electrolyte after absorbing water. If the adhered dust is not cleaned in time, the dust may form acidic electrolyte after absorbing water. When it adheres to the metal surface, it will damage the anti-corrosion coating, cause electrochemical corrosion, accelerate the rusting of the ventilation device, and reduce the service life of the ventilation device. Summary of the Invention

[0005] Technical problems to be solved: There are usually operations such as ore crushing and rock layer excavation in deep wells, which will generate a large amount of dust particles. And the ventilation device needs to continuously inhale the air in the well to complete ventilation. The dust carried by the air may adhere to the device along with the air flow. If there are sulfides in the deep well environment, such as acidic dusts like decomposition products of hydrogen sulfide and nitrogen oxides in mines, or acidic gases in the air, such as sulfur dioxide combined with dust, the dust may form acidic electrolyte after absorbing water. If the adhered dust is not cleaned in time, the dust may form acidic electrolyte after absorbing water. When it adheres to the metal surface, it will damage the anti-corrosion coating, cause electrochemical corrosion, accelerate the rusting of the ventilation device, and reduce the service life of the ventilation device.

[0006] In view of the deficiencies of the prior art, the present invention provides a ventilation device for deep wells, thereby solving the technical problems mentioned in the background art.

[0007] To achieve the above object, the present invention is implemented through the following technical solutions:

[0008] A ventilation device for deep wells, comprising a ventilation device main body and a ventilation device fan frame. The ventilation device main body is fixedly connected to the inside of the ventilation device fan frame. Two mutually parallel fixed long plates are fixedly connected to the rear end of the ventilation device fan frame. A rubber cleaning brush is arranged between the two fixed long plates. The front end of the rubber cleaning brush is movably connected to the rear surface of the ventilation device main body. A rectangular long plate is arranged at the rear end of the ventilation device main body. The upper and lower ends of the rectangular long plate are fixedly connected to the corresponding fixed long plates. A second connecting long rod is rotatably connected to the front end of the rectangular long plate. A meshing bevel gear is fixedly connected to the front end of the second connecting long rod. A rotating bevel gear is vertically meshed with the front end of the meshing bevel gear. A rotating long rod is fixedly connected to the center point of the rotating bevel gear. The upper and lower ends of the rotating long rod are rotatably connected to the fixed long plates.

[0009] In a possible implementation manner, a missing gear is fixedly connected to the surface of the second connecting long rod. A gear strip is meshed and connected to the right end of the missing gear. A rectangular limiting plate is arranged at the upper end of the upper fixed long plate. A rectangular groove is opened on the upper side of the upper fixed long plate. The upper end of the gear strip passes through the rectangular groove.

[0010] In a possible implementation manner, the upper end of the gear strip passes through the fixed long plate and is fixedly connected to the lower surface of the rectangular limiting plate. A return spring is fixedly connected to the lower end of the rectangular limiting plate. The gear strip is located inside the return spring. The lower end of the return spring is fixedly connected to the upper fixed long plate.

[0011] In a possible implementation manner, a rectangular connecting plate is fixedly connected to the front end of the rectangular limiting plate. The front end of the rectangular connecting plate is fixedly connected to the rear surface of the rubber cleaning brush.

[0012] In a possible implementation manner, first connecting long rods are sleeved on the left and right ends of the rubber cleaning brush. The upper and lower ends of the two first connecting long rods are fixedly connected to the corresponding fixed long plates.

[0013] In a possible implementation manner, a synchronous chain is arranged at the upper end of the ventilation device fan frame. Sprockets are meshed and connected to both ends of the synchronous chain. A third connecting long rod is fixedly connected to the center point of the rear sprocket. The lower end of the third connecting long rod passes through the corresponding fixed long plate and is fixedly connected to the upper surface of the rotating long rod.

[0014] In a possible implementation manner, a U-shaped support plate is arranged at the upper end of the third connecting long rod. The lower surface of the U-shaped support plate is fixedly connected to the upper fixed long plate. A servo motor is fixedly connected to the upper end of the U-shaped support plate. The output port of the servo motor passes through the U-shaped support plate and is fixedly connected to the third connecting long rod.

[0015] In a possible implementation, a damping shaft is provided at the center point of the sprocket located at the front end, and the sprocket is fixedly connected to the outer ring of the damping shaft.

[0016] In a possible implementation, a rotating connecting column is provided at the front end of the ventilation device body. The lower end of the rotating connecting column is rotatably connected to the inner wall of the ventilation device fan frame. The upper end of the rotating connecting column passes through the ventilation device fan frame and is fixedly connected to the inner ring of the damping shaft. Wind shielding plates are fixedly connected to both ends of the rotating connecting column.

[0017] In a possible implementation, a first limiting block is fixedly connected to the inner wall of the ventilation device fan frame, and a second limiting block is also fixedly connected to the inner wall of the ventilation device fan frame. The second limiting block is perpendicular to the first limiting block, and a part protection frame is fixedly connected to the upper end of the ventilation device fan frame.

[0018] Beneficial effects compared with the prior art:

[0019] 1. In this solution, the sprocket at the rear end is driven to rotate counterclockwise by the servo motor. The sprocket at the rear end drives the third connecting long rod and the rotating long rod to rotate counterclockwise. The rotating long rod drives the rotating bevel gear to rotate counterclockwise. The rotating bevel gear drives the meshing bevel gear and the second connecting long rod to rotate clockwise. When the second connecting long rod rotates, it will drive the missing gear to rotate clockwise. When the missing gear rotates clockwise, it will drive the gear strip to descend. The gear strip will drive the rectangular connecting plate and the rubber cleaning brush to descend. At this time, the rubber cleaning brush will sweep off the dust on the rear surface of the ventilation device body. When the gear strip descends, it will drive the rectangular limiting plate to descend, and when the rectangular limiting plate descends, it will squeeze the reset spring. The missing gear is provided with half of the teeth. When the missing gear rotates half a week, the missing gear will cancel the meshing with the gear strip. At this time, the reset spring will rebound, and the reset spring drives the rectangular limiting plate and the gear strip to reset until the missing gear rotates one week and meshes with the gear strip again, and the gear strip will drive the rubber cleaning brush to clean the rear surface of the ventilation device body again, achieving the purpose of the rubber cleaning brush reciprocally cleaning the ventilation device body, avoiding the erosion of the ventilation device body by dust, and improving the service life of the ventilation device;

[0020] 2. In this solution, the synchronous chain is engaged with two sprockets. Therefore, when the servo motor starts, it will cause the two sprockets to rotate counterclockwise synchronously. The front sprocket will drive the rotating connecting column to rotate counterclockwise through the damping shaft. The rotation of the rotating connecting column will drive the two windshields to rotate. When the windshield contacts the second limit block, the windshield will resist against the second limit block. At this time, the windshield is perpendicular to the main body of the ventilation device. When using the main body of the ventilation device, the perpendicularity of the windshield to the main body of the ventilation device will not affect the ventilation effect. When not using the main body of the ventilation device, control the servo motor to output in the reverse direction. At this time, the rotating connecting column drives the windshield to rotate clockwise until the windshield resists against the first limit block. At this time, the two windshields are parallel to the main body of the ventilation device within the ventilation device fan frame. When the two windshields are parallel, they will isolate the ventilation device fan frame, preventing harmful gases such as gas and carbon monoxide in the deep well environment from flowing back.

[0021] 3. In this solution, with the support of the first connecting long rod, the rubber cleaning brush will not shift or shake during reciprocating motion, ensuring its stable movement along the fixed track and improving the reliability of the cleaning effect.

[0022] 4. In this solution, the rectangular long plate will wrap the transmission parts such as the synchronous chain, sprockets, and damping shaft at the upper end of the ventilation device fan frame, reducing the erosion of metal parts by humid air or condensate water, reducing the risk of rust, and ensuring the transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it in accordance with the content of the specification, the following will describe in detail with reference to the preferred embodiments of the present invention and the accompanying drawings.

[0024] Figure 1 is a schematic structural diagram of the whole of the present invention;

[0025] Figure 2 is a schematic structural diagram of the present invention without a gear;

[0026] Figure 3 is a schematic structural diagram of the gear strip of the present invention;

[0027] Figure 4 is a schematic structural diagram of the synchronous chain of the present invention;

[0028] Figure 5 is a schematic structural diagram of the windshield of the present invention;

[0029] Figure 6 is a schematic structural diagram of the rotating connecting column of the present invention.

[0030] Legend: 11. Main body of ventilation device; 12. Fan frame of ventilation device; 13. Fixed long plate; 14. Rectangular long plate; 15. Defective gear; 16. First connecting long rod; 17. Rotating long rod; 18. Rubber cleaning brush; 19. Return spring; 20. Damping shaft; 21. Sprocket; 22. Synchronous chain; 23. Rectangular limit plate; 24. Servo motor; 25. Rectangular groove; 26. Gear strip; 27. Rectangular connecting plate; 28. Rotating bevel gear; 29. Meshing bevel gear; 30. Second connecting long rod; 31. Third connecting long rod; 32. U-shaped support plate; 33. Windshield; 34. Rotating connecting column; 35. First limit block; 36. Second limit block; 37. Part protection frame. Detailed implementation

[0031] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can be implemented in various different forms. Therefore, the present invention is not limited to the embodiments described below. In addition, in order to describe the present invention more clearly, components not connected to the invention will be omitted from the drawings;

[0032] The technical solutions in the embodiments of this application are to solve the problems in the above background technology, and the general idea is as follows:

[0033] Embodiment:

[0034] Please refer to Figure 1 and Figure 6As shown in the figure, this embodiment introduces the specific structure of a ventilation device for deep wells, including a ventilation device main body 11 and a ventilation device fan frame 12. The ventilation device main body 11 is fixedly connected to the inside of the ventilation device fan frame 12. Two parallel fixed long plates 13 are fixedly connected to the rear end of the ventilation device fan frame 12. A rubber cleaning brush 18 is arranged between the two fixed long plates 13. The front end of the rubber cleaning brush 18 is movably connected to the rear surface of the ventilation device main body 11. The sprocket 21 at the rear end is driven by a servo motor 24 to rotate counterclockwise. The sprocket 21 at the rear end drives the third connecting long rod 31 and the rotating long rod 17 to rotate counterclockwise. The rotating long rod 17 drives the rotating bevel gear 28 to rotate counterclockwise. The rotating bevel gear 28 drives the meshing bevel gear 29 and the second connecting long rod 30 to rotate clockwise. When the second connecting long rod 30 rotates, it will drive the missing gear 15 to rotate clockwise. When the missing gear 15 rotates clockwise, it will drive the gear strip 26 to descend. The gear strip 26 will drive the rectangular connecting plate 27 and the rubber cleaning brush 18 to descend. At this time, the rubber cleaning brush 18 will sweep off the dust on the rear surface of the ventilation device main body 11. When the gear strip 26 descends, it will drive the rectangular limiting plate 23 to descend. When the rectangular limiting plate 23 descends, it will squeeze the return spring 19. The missing gear 15 is provided with half teeth. When the missing gear 15 rotates half a week, the missing gear 15 will cancel the meshing with the gear strip 26. At this time, the return spring 19 will rebound, and the return spring 19 drives the rectangular limiting plate 23 and the gear strip 26 to reset until the missing gear 15 rotates one week and meshes with the gear strip 26 again. The gear strip 26 will drive the rubber cleaning brush 18 to clean the rear surface of the ventilation device main body 11 again, achieving the purpose of reciprocating cleaning of the ventilation device main body 11 by the rubber cleaning brush 18, avoiding the erosion of the ventilation device main body 11 by dust, and improving the service life of the ventilation device.

[0035] A rectangular long plate 14 is provided at the rear end of the main body 11 of the ventilation device. Both the upper and lower ends of the rectangular long plate 14 are fixedly connected to the corresponding fixed long plates 13. The front end of the rectangular long plate 14 is rotatably connected to a second connecting long rod 30. The front end of the second connecting long rod 30 is fixedly connected to an engaging bevel gear 29. The front end of the engaging bevel gear 29 is vertically engaged with a rotating bevel gear 28. The center point of the rotating bevel gear 28 is fixedly connected to a rotating long rod 17. Both the upper and lower ends of the rotating long rod 17 are rotatably connected to the fixed long plates 13. A missing gear 15 is fixedly connected to the surface of the second connecting long rod 30. The right end of the missing gear 15 is meshed with a gear strip 26. A rectangular limiting plate 23 is provided at the upper end of the upper fixed long plate 13. A rectangular groove 25 is provided on the upper side of the upper fixed long plate 13. The upper end of the gear strip 26 passes through the rectangular groove 25. The upper end of the gear strip 26 passes through the fixed long plate 13 and is fixedly connected to the lower surface of the rectangular limiting plate 23. A return spring 19 is fixedly connected to the lower end of the rectangular limiting plate 23. The gear strip 26 is located inside the return spring 19. The lower end of the return spring 19 is fixedly connected to the upper fixed long plate 13. A rectangular connecting plate 27 is fixedly connected to the front end of the rectangular limiting plate 23. The front end of the rectangular connecting plate 27 is fixedly connected to the rear surface of the rubber cleaning brush 18.

[0036] Both the left and right ends of the rubber cleaning brush 18 are sleeved with a first connecting long rod 16. Both the upper and lower ends of the two first connecting long rods 16 are fixedly connected to the corresponding fixed long plates 13. With the support of the first connecting long rod 16, the rubber cleaning brush 18 will not shift or shake during reciprocating motion, ensuring its smooth movement along the fixed track and improving the reliability of the cleaning effect.

[0037] A synchronous chain 22 is provided at the upper end of the ventilation device fan frame 12. Both ends of the synchronous chain 22 are meshed with a sprocket 21. The center point of the rear sprocket 21 is fixedly connected to a third connecting long rod 31. The lower end of the third connecting long rod 31 passes through the corresponding fixed long plate 13 and is fixedly connected to the upper surface of the rotating long rod 17. The upper end of the third connecting long rod 31 is provided with a U-shaped support plate 32. The lower surface of the U-shaped support plate 32 is fixedly connected to the upper fixed long plate 13. A servo motor 24 is fixedly connected to the upper end of the U-shaped support plate 32. The output port of the servo motor 24 passes through the U-shaped support plate 32 and is fixedly connected to the third connecting long rod 31. A damping shaft 20 is provided at the center point of the front sprocket 21. The sprocket 21 is fixedly connected to the outer ring of the damping shaft 20. The synchronous chain 22 is meshed with the two sprockets 21. Therefore, when the servo motor 24 is started, the two sprockets 21 will rotate synchronously counterclockwise.

[0038] A rotating connection column 34 is provided at the front end of the ventilation device main body 11. The lower end of the rotating connection column 34 is rotatably connected to the inner wall of the ventilation device fan frame 12. The upper end of the rotating connection column 34 passes through the ventilation device fan frame 12 and is fixedly connected to the inner ring of the damping shaft 20. The sprocket 21 at the front end will drive the rotating connection column 34 to rotate counterclockwise through the damping shaft 20. The rotation of the rotating connection column 34 will drive the two windshields 33 to rotate. Windshields 33 are fixedly connected to both ends of the rotating connection column 34. A first limit block 35 is fixedly connected to the inner wall of the ventilation device fan frame 12. A second limit block 36 is also fixedly connected to the inner wall of the ventilation device fan frame 12. The second limit block 36 is perpendicular to the first limit block 35. When the windshield 33 contacts the second limit block 36, the windshield 33 will abut against the second limit block 36. At this time, the windshield 33 is perpendicular to the ventilation device main body 11. When using the ventilation device main body 11, the perpendicularity of the windshield 33 to the ventilation device main body 11 will not affect the ventilation effect. When the ventilation device main body 11 is not in use, control the servo motor 24 to output in the reverse direction. At this time, the rotating connection column 34 drives the windshield 33 to rotate clockwise until the windshield 33 abuts against the first limit block 35. At this time, the two windshields 33 are parallel to the ventilation device main body 11 within the ventilation device fan frame 12. When the two windshields 33 are parallel, they will isolate the ventilation device fan frame 12, preventing harmful gases such as gas and carbon monoxide in the deep well environment from flowing back.

[0039] A part protection frame 37 is fixedly connected to the upper end of the ventilation device fan frame 12. The part protection frame 37 will wrap the transmission parts such as the synchronous chain 22, sprocket 21, and damping shaft 20 at the upper end of the ventilation device fan frame 12, reducing the erosion of metal parts by humid air or condensate, reducing the risk of rust, and ensuring the transmission efficiency.

[0040] Working principle:

[0041] First step, drive the sprocket 21 at the rear end to rotate counterclockwise through the servo motor 24. The sprocket 21 at the rear end drives the third connecting long rod 31 and the rotating long rod 17 to rotate counterclockwise. The rotating long rod 17 drives the rotating bevel gear 28 to rotate counterclockwise. The rotating bevel gear 28 drives the meshing bevel gear 29 and the second connecting long rod 30 to rotate clockwise. When the second connecting long rod 30 rotates, it drives the missing gear 15 to rotate clockwise. When the missing gear 15 rotates clockwise, it drives the gear strip 26 to descend. The gear strip 26 drives the rectangular connecting plate 27 and the rubber cleaning brush 18 to descend. At this time, the rubber cleaning brush 18 sweeps off the dust on the rear surface of the ventilation device main body 11. When the gear strip 26 descends, it drives the rectangular limiting plate 23 to descend. When the rectangular limiting plate 23 descends, it squeezes the return spring 19. The missing gear 15 is provided with half of the teeth. When the missing gear 15 rotates half a circle, the missing gear 15 cancels the meshing with the gear strip 26. At this time, the return spring 19 rebounds, and the return spring 19 drives the rectangular limiting plate 23 and the gear strip 26 to reset until the missing gear 15 rotates one circle and meshes with the gear strip 26 again. The gear strip 26 drives the rubber cleaning brush 18 to clean the rear surface of the ventilation device main body 11 again, achieving the purpose of the rubber cleaning brush 18 reciprocally cleaning the ventilation device main body 11, avoiding the erosion of the ventilation device main body 11 by dust, and improving the service life of the ventilation device.

[0042] Second step, the synchronous chain 22 meshes with the two sprockets 21. Therefore, when the servo motor 24 is started, the two sprockets 21 will rotate synchronously counterclockwise. The front sprocket 21 drives the rotating connecting column 34 to rotate counterclockwise through the damping shaft 20. The rotation of the rotating connecting column 34 drives the two windshields 33 to rotate. When the windshield 33 contacts the second limiting block 36, the windshield 33 will resist the second limiting block 36. At this time, the windshield 33 is perpendicular to the ventilation device main body 11. When using the ventilation device main body 11, the perpendicularity of the windshield 33 to the ventilation device main body 11 will not affect the ventilation effect. When the ventilation device main body 11 is not in use, control the servo motor 24 to output in the reverse direction. At this time, the rotating connecting column 34 drives the windshield 33 to rotate clockwise until the windshield 33 resists the first limiting block 35. At this time, the two windshields 33 are parallel to the ventilation device main body 11 in the ventilation device fan frame 12. When the two windshields 33 are parallel, they will isolate the ventilation device fan frame 12, avoiding the backflow of harmful gases such as gas and carbon monoxide in the deep well environment.

[0043] In the third step, the first connecting long rod 16 made of high-strength material is used to support the rubber cleaning brush 18. By utilizing the precise clearance fit between the first connecting long rod and the sliding sleeves at both ends of the cleaning brush, the cleaning brush can only slide smoothly along the axial direction of the first connecting long rod during the reciprocating movement of the connecting plate 27 driven by the rack 26. The structure design with symmetrically arranged double rods effectively balances the lateral force on the cleaning brush. The polytetrafluoroethylene self-lubricating layer on the inner wall of the sliding sleeve reduces the frictional resistance, thus ensuring that the rubber cleaning brush 18 will not shift or shake during the up and down movement and strictly runs along the fixed track, significantly improving the reliability of the dust cleaning effect on the rear surface of the main body 11 of the ventilation device.

[0044] In the fourth step, the part protection frame 37 adopts a fully enclosed metal shell structure, which completely encloses the transmission parts such as the synchronous chain 22, sprocket 21, and damping shaft 20 at the upper end of the fan frame 12 of the ventilation device. The surface of its shell is treated with an anti-rust coating, and a moisture-proof sealing strip is arranged inside. It can effectively block the contact between the humid air, condensed water, and dust in the deep well environment and the transmission parts, reduce the risk of oxidation and rust of metal parts caused by long-term exposure to a humid and corrosive environment, and at the same time prevent impurities from entering the transmission system, resulting in chain jamming or gear wear, ensure the stable meshing transmission efficiency of the synchronous chain and sprocket, extend the service life of precision components such as the damping shaft, and guarantee the reliable operation of the entire ventilation device transmission system.

[0045] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. The obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A ventilation device for deep wells, comprising a ventilation device main body (11) and a ventilation device fan frame (12), wherein the ventilation device main body (11) is fixedly connected to the inside of the ventilation device fan frame (12), and is characterized in that, At the rear end of the fan frame (12) of the ventilation device, two parallel fixed long plates (13) are fixedly connected. A rubber cleaning brush (18) is arranged between the two fixed long plates (13). The front end of the rubber cleaning brush (18) is movably connected to the rear surface of the ventilation device main body (11). Among them, a rectangular long plate (14) is arranged at the rear end of the ventilation device main body (11). Both the upper and lower ends of the rectangular long plate (14) are fixedly connected to the corresponding fixed long plates (13). The front end of the rectangular long plate (14) is rotatably connected to a second connecting long rod (30). The front end of the second connecting long rod (30) is fixedly connected to a meshing bevel gear (29). The meshing bevel gear (29) is vertically meshed with a rotating bevel gear (28) at the front end. The center point of the rotating bevel gear (28) is fixedly connected to a rotating long rod (17). Both the upper and lower ends of the rotating long rod (17) are rotatably connected to the fixed long plates (13).

2. The ventilation device for deep wells according to claim 1, characterized in that, A deficient gear (15) is fixedly connected to the surface of the second connecting long rod (30). The right end of the deficient gear (15) is meshed with a gear strip (26). Among them, a rectangular limiting plate (23) is arranged at the upper end of the upper fixed long plate (13). A rectangular groove (25) is opened on the upper side of the upper end of the upper fixed long plate (13). The upper end of the gear strip (26) passes through the rectangular groove (25).

3. The ventilation device for deep wells according to claim 2, characterized in that, The upper end of the gear strip (26) passes through the fixed long plate (13) and is fixedly connected to the lower surface of the rectangular limiting plate (23). Among them, a return spring (19) is fixedly connected to the lower end of the rectangular limiting plate (23). The gear strip (26) is located inside the return spring (19). The lower end of the return spring (19) is fixedly connected to the upper fixed long plate (13).

4. The ventilation device for deep wells according to claim 2, wherein A rectangular connecting plate (27) is fixedly connected to the front end of the rectangular limiting plate (23). The front end of the rectangular connecting plate (27) is fixedly connected to the rear surface of the rubber cleaning brush (18).

5. The ventilation device for deep wells according to claim 1, characterized in that, Both the left and right ends of the rubber cleaning brush (18) are sleeved with first connecting long rods (16). Both the upper and lower ends of the two first connecting long rods (16) are fixedly connected to the corresponding fixed long plates (13).

6. A ventilation device for deep wells according to claim 1, characterized in that, A synchronous chain (22) is arranged at the upper end of the fan frame (12) of the ventilation device. Both ends of the synchronous chain (22) are meshed with sprockets (21). Among them, the center point of the rear sprocket (21) is fixedly connected to a third connecting long rod (31). The lower end of the third connecting long rod (31) passes through the corresponding fixed long plate (13) and is fixedly connected to the upper surface of the rotating long rod (17).

7. The ventilation device for deep wells according to claim 6, characterized in that, The upper end of the third connecting long rod (31) is provided with a U-shaped support plate (32). The lower surface of the U-shaped support plate (32) is fixedly connected to the upper fixed long plate (13). Among them, a servo motor (24) is fixedly connected to the upper end of the U-shaped support plate (32). The output port of the servo motor (24) passes through the U-shaped support plate (32) and is fixedly connected to the third connecting long rod (31).

8. The ventilation device for deep wells according to claim 6, characterized in that, A damping shaft (20) is provided at the center point of the sprocket wheel (21) located at the front end, and the sprocket wheel (21) is fixedly connected to the outer ring of the damping shaft (20).

9. The ventilation device for deep wells according to claim 8, characterized in that, A rotating connection column (34) is provided at the front end of the ventilation device main body (11), and the lower end of the rotating connection column (34) is rotatably connected to the inner wall of the ventilation device fan frame (12); Among them, the upper end of the rotating connection column (34) passes through the ventilation device fan frame (12) and is fixedly connected to the inner ring of the damping shaft (20), and windshields (33) are fixedly connected to both ends of the rotating connection column (34).

10. A ventilation device for deep wells according to claim 9, characterized in that, A first limiting block (35) is fixedly connected to the inner wall of the ventilation device fan frame (12), and a second limiting block (36) is also fixedly connected to the inner wall of the ventilation device fan frame (12); Among them, a part protection frame (37) is fixedly connected to the upper end of the ventilation device fan frame (12).

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