Mining ventilation device convenient to adjust

Abstract

The invention relates to the technical field of ventilation devices, in particular to a mining ventilation device convenient to adjust, which comprises an air bellow, two winding rollers are rotatably mounted between the inner surfaces of the air bellow, a forward and reverse rotation alternate transmission part is mounted on the air bellow, and the two winding rollers are driven by the forward and reverse rotation alternate transmission part and periodically and alternately rotate forward and reverse. Ventilation filter cloth is wound between the two winding rollers, a rotatable dust stripping shaft is installed at the position, corresponding to the lower portion of the forward and reverse rotation alternating transmission part, between the inner surfaces of the air bellows, and a set of dust stripping protruding blocks are installed on the dust stripping shaft. According to the invention, through alternate positive and negative rotation of the two winding rollers, when ventilation operation is carried out, the ventilation filter cloth can reciprocate in a set stroke, and through reciprocating motion of the ventilation filter cloth, the ventilation filter cloth can be recycled.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation devices, and in particular to a ventilation device for mining that is easy to adjust. Background Art

[0002] In recent years, with the continuous development of mechanization and automation in my country's coal industry, the coal dust at the working face during coal mining has become increasingly greater. The health and safety problems caused by coal dust are particularly prominent. High-concentration coal dust not only causes occupational diseases but may also lead to dust explosion accidents, seriously affecting the safe production of mines. Therefore, mine ventilation and dust reduction measures are essential.

[0003] Good ventilation can reduce the ambient temperature and humidity during mining operations, reduce dust and smoke, and provide a more comfortable working environment for workers.

[0004] When performing ventilation operations, existing ventilation devices mostly use axial flow fans plus simple filter structures to achieve ventilation operations. However, this ventilation method has a high dust accumulation rate on the fan blades. After long-term use, a large amount of dust will accumulate on the surface of the fan blades, resulting in reduced ventilation efficiency. On the other hand, the air output intensity and circulation effect are poor. At the same time, most existing devices are fixed structures and cannot be rotated according to the work scene, resulting in a single ventilation direction. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the background technology and to provide a mining ventilation device that is easy to adjust.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is: a mining ventilation device that is easy to adjust, including a bellows, two rollers are rotatably installed between the inner surfaces of the bellows, a forward and reverse alternating transmission component is installed on the bellows, the two rollers are driven by the forward and reverse alternating transmission component and periodically rotate forward and reverse, a ventilation filter cloth is wound between the two rollers, a rotatable ash stripping shaft is installed between the inner surfaces of the bellows and at a position corresponding to the position below the forward and reverse alternating transmission component, a group of ash stripping protrusions are installed on the ash stripping shaft, each The ash-stripping protrusions are all adapted to be connected with the ventilation filter cloth, and tensioning and deformation anti-cleaning components are installed between the inner surfaces of the bellows to tension the ventilation filter cloth and deform the ventilation filter cloth to make it self-cleaning. The top surface of the bellows and the position corresponding to the top of the ventilation filter cloth are connected with an air outlet hood, and the air outlet hood is rotatably connected with an air distribution pipe, and a reciprocating driving component for driving the air distribution pipe to rotate back and forth is installed on the air outlet hood, and the reciprocating driving component is connected to a fan shaft that can vibrate and rotate synchronously, and a plurality of fan blades are installed on the fan shaft and at positions corresponding to the inner side of the air outlet hood.

[0007] Preferably, the reciprocating drive component includes a stand mounted on the air outlet hood, a double-headed motor connected to the stand and a square shaft rotatably connected to the stand, one end of the double-headed motor has an output shaft transmission connected to a first synchronous belt, the square shaft is transmission connected to the first synchronous belt, the fan shaft is driven by the square shaft, a vibration blade seat is slidably mounted on the inner wall of the stand, a return spring limited by the stand is mounted on the bottom surface of the vibration blade seat, a guide wheel is rotatably mounted on the vibration blade seat, a differential shaft is rotatably mounted on the inner wall of the stand, a first bevel gear is mounted on both the differential shaft and the square shaft, the two first bevel gears are meshed with each other, a polarization protrusion is mounted on the differential shaft, and the polarization protrusion is adaptively connected to the guide wheel.

[0008] Preferably, a square groove with an opening at the top is fixedly provided inside the fan shaft and is slidably connected to the square shaft, and the cross sections of the square shaft and the square groove are both regular polygons.

[0009] Preferably, the reciprocating drive component also includes a circular shaft rotatably mounted on the stand, the circular shaft is connected to the first synchronous belt transmission, a first half-circle gear is mounted on the circular shaft, a rotating gear is mounted on the air distribution pipe, the first half-circle gear is connected to the rotating gear transmission, and a torsion spring is provided at the rotating connection between the air distribution pipe and the stand.

[0010] Preferably, ventilation mesh plates are installed around the air box and at positions corresponding to the bottom of the ventilation filter cloth, a set of universal casters are installed on the bottom surface of the air box, and the air outlet direction of the air duct is perpendicular to the rotation axis of the fan shaft.

[0011] The transmission gears are connected with the first gear and the second gears are connected with the gear via the third timing belt, and the third gears are connected with the gear via the third timing belt.

[0012] Preferably, the radius of the second half-ring gear is 5 to 9 times the radius of the synchronous gear.

[0013] Preferably, the tensioning and deformation anti-clearing component includes an air duct and two tensioning frames slidably connected between the inner surface of the bellows, a group of second elastic limiters are installed between each tensioning frame and the bellows, and a convex roller and a tensioning roller are rotatably installed on the inner wall of each tensioning frame, the tensioning roller is transmission-connected to the convex roller through an annular toothed belt, the tensioning roller and the convex roller are both adaptively connected to the ventilation filter cloth, the air inlet end of the air duct is connected to the air outlet hood, the air outlet port of the air duct is connected to a three-way hose, the other two ends of the three-way hose are respectively rotatably connected to the inner cavity of the two convex rollers, and a group of air outlet nozzles are opened on the convex roller.

[0014] Preferably, the axis of the air outlet nozzle is perpendicular to the rotation axis of the convex roller, an induced draft fan is installed inside the air induced duct, and a one-way ventilation valve is provided at the connection between the air induced duct and the air outlet hood.

[0015] Preferably, the tensioning and deforming anti-cleaning component further includes two ash storage bins slidably connected to the inner wall of the bellows.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention utilizes a forward-reverse alternating transmission component to enable two rollers to rotate alternately forward and reverse at a set cycle. During both the forward and reverse cycles, the rollers rotate a set number of revolutions. This alternating forward and reverse rotation of the two rollers allows the ventilation filter cloth to reciprocate within a set stroke during ventilation operations. This reciprocating motion of the ventilation filter cloth allows for recycling and effectively reduces its clogging rate. Furthermore, as the ventilation filter cloth reciprocates within the set stroke, the ash stripping shaft rotates at a set speed. After the ash stripping shaft rotates, the ash stripping protrusions cause the ventilation filter cloth to undergo reciprocating deformation during air filtering operations. This reciprocating deformation of the ventilation filter cloth allows impurities adhering to the ventilation filter cloth to be quickly shaken off due to the deformation of the ventilation filter cloth, effectively reducing the ash accumulation rate of the ventilation filter cloth. Furthermore, this reciprocating deformation of the ventilation filter cloth changes the angle of the mesh openings on the ventilation filter cloth relative to the airflow, thereby improving the ventilation efficiency and ventilation rate of the ventilation filter cloth.

[0017] 2. In the present invention, when the ventilation filter cloth moves, the convex roller and the tensioning roller rotate synchronously. After the convex roller rotates, on the one hand, it can cyclically change the relative angle between the air outlet nozzle and the ventilation filter cloth, and then cyclically change the anti-cleaning angle of the air outlet nozzle to the ventilation filter cloth, thereby improving the anti-cleaning effect of dust adhered to the ventilation filter cloth. At the same time, through the convex structure of the convex roller, the air outlet nozzle can be further deformed when acting on the ventilation filter cloth, thereby effectively improving the anti-cleaning and dust removal efficiency of the ventilation filter cloth and the physical deformation type dust stripping effect.

[0018] 3. In the present invention, by setting the torsion spring, the first half-circle gear and the rotating gear, the air distribution pipe can rotate cyclically at 0°-180° when the ventilation device is performing ventilation operation. By setting the above-mentioned angle rotation of the air distribution pipe, the ventilation coverage area and ventilation efficiency of the ventilation device per unit time in the mine are effectively improved.

[0019] 4. When the ventilation device of the present invention is working, the double-headed motor continuously outputs the rotational speed. After the double-headed motor outputs the rotational speed, it drives the square shaft and the differential shaft to rotate. After the differential shaft rotates, the polarization protrusion, the guide wheel and the reset spring are set, so that the fan shaft and the fan blades can vibrate back and forth within the set stroke during the rotation process. The vibration of the fan blades when they are working can effectively reduce the dust accumulation rate and maintenance cost on the fan blade surface. At the same time, the up and down movement of the fan blades can reciprocate to adjust the distance between the fan blades and the air distribution pipe, thereby reciprocatingly adjusting the air outlet intensity of the air distribution pipe, and then realizing the periodic adjustment and switching of the air outlet intensity. Through the cyclic adjustment and conversion of the air outlet intensity, the ventilation efficiency and ventilation effect of the device are effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a mining ventilation device that is easy to adjust according to the present invention; Figure 2 For the present invention Figure 1 Structural diagram from another perspective; Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at A in the middle; Figure 4 For the present invention Figure 2 Schematic diagram of the enlarged structure at B in the middle; Figure 5 This is a schematic structural diagram of the polarization protrusion and stand of the present invention; Figure 6 It is a structural schematic diagram of the circular shaft and square shaft of the present invention; Figure 7 Schematic diagram of the cross-sectional structure of the fan shaft and the circular shaft of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point C in the middle.

[0021] 1. Bellows; 2. Roller; 3. Ventilation filter cloth; 4. Ash stripping shaft; 5. Ash stripping bump; 6. Air outlet hood; 7. Air distribution duct; 8. Fan shaft; 9. Fan blades; 10. Stand; 11. Double-headed motor; 12. Square shaft; 13. Vibrating blade seat; 14. Return spring; 15. Guide wheel; 16. Differential shaft; 17. Polarization bump; 18. Round shaft; 19. First half-turn gear; 20. Rotating gear ; 21. Torsion spring; 22. Ventilation mesh plate; 23. Large gear shaft; 24. Small gear shaft; 25. Belt shaft; 26. Second half-circle gear; 27. Tooth plate; 28. First elastic limiter; 29. ​​Synchronous gear; 30. Air duct; 31. Tensioning frame; 32. Second elastic limiter; 33. Convex roller; 34. Tensioning roller; 35. Three-way hose; 36. Air outlet nozzle; 37. Ash storage drawer. DETAILED DESCRIPTION

[0022] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0023] like Figures 1-8 The present invention shows an easily adjustable mining ventilation device, comprising a bellows 1, with two rollers 2 rotatably mounted between the inner surfaces of the bellows 1. A forward and reverse alternating transmission component is mounted on the bellows 1. The two rollers 2 are driven by the forward and reverse alternating transmission component and periodically rotate forward and reverse. A ventilation filter cloth 3 is wound between the two rollers 2. like Figures 1-8 As shown, the ventilation filter cloth 3 is evenly distributed with air filter meshes, and the specifications of the air filter meshes on the ventilation filter cloth 3 can be customized according to actual needs; Ventilation mesh plates 22 are installed around the bellows 1 and at positions corresponding to the bottom of the ventilation filter cloth 3. A set of universal casters are installed on the bottom surface of the bellows 1. The top surface of the air box 1 and the position corresponding to the top of the ventilation filter cloth 3 are connected with an air outlet cover 6, and the air outlet cover 6 is rotatably connected with an air distribution pipe 7, and a reciprocating driving component for driving the air distribution pipe 7 to rotate back and forth is installed on the air outlet cover 6; The reciprocating drive component is connected to a fan shaft 8 that can vibrate and rotate synchronously, and a plurality of fan blades 9 are installed on the fan shaft 8 at positions corresponding to the inner side of the air outlet cover 6; The air outlet direction of the air distribution duct 7 is perpendicular to the rotation axis of the fan shaft 8; like Figure 1 、 Figure 5 and Figure 6 As shown, the reciprocating drive component includes a stand 10 mounted on the air outlet cover 6, a double-headed motor 11 connected to the stand 10, and a square shaft 12 rotatably connected to the stand 10. One end of the output shaft of the double-headed motor 11 is connected to a first synchronous belt, and the square shaft 12 is connected to the first synchronous belt. The fan shaft 8 is driven by the square shaft 12; A square groove with an open top and sliding connection to the square shaft 12 is fixedly provided inside the fan shaft 8. The cross sections of the square shaft 12 and the square groove are both regular polygons. The square shaft 12 and the square groove are arranged in a regular polygonal cross section so that when the vane plate reciprocates up and down, the square shaft 12 can continuously drive the fan shaft 8; A vibration blade seat 13 is slidably mounted on the inner wall of the stand 10, and a return spring 14 is mounted on the bottom surface of the vibration blade seat 13 and is limited by the stand 10; A guide wheel 15 is rotatably mounted on the vibration blade seat 13, and a differential shaft 16 is rotatably mounted on the inner wall of the stand 10. First bevel gears are mounted on both the differential shaft 16 and the square shaft 12, and the two first bevel gears are meshed with each other. A polarization protrusion 17 is mounted on the differential shaft 16, and the polarization protrusion 17 is adapted to be connected to the guide wheel 15; When the ventilation device is working, the double-headed motor 11 continuously outputs a rotational speed. After the double-headed motor 11 outputs a rotational speed, it drives the square shaft 12 and the differential shaft 16 to rotate. After the differential shaft 16 rotates, the polarization protrusion 17, the guide wheel 15 and the return spring 14 are set, so that the fan shaft 8 and the fan blades 9 can reciprocate within the set stroke during the rotation process; The vibration of the fan blades 9 during operation effectively reduces the dust accumulation rate on the surface of the fan blades 9 and the maintenance cost; At the same time, the up and down movement of the fan blades 9 reciprocates to adjust the distance between the fan blades 9 and the air distribution pipe 7, thereby reciprocating to adjust the air output intensity of the air distribution pipe 7, and then realizes the periodic adjustment and switching of the air output intensity. Through the cyclic adjustment and conversion of the air output intensity, the ventilation efficiency and ventilation effect of the device are effectively improved; like Figure 1 、 Figure 5 、 Figure 6 and Figure 7 As shown, the reciprocating drive component also includes a circular shaft 18 rotatably mounted on the stand 10, the circular shaft 18 is connected to the first synchronous belt, a first half-circle gear 19 is mounted on the circular shaft 18, a rotating gear 20 is mounted on the air distribution pipe 7, the first half-circle gear 19 is connected to the rotating gear 20, and a torsion spring 21 is provided at the rotating connection between the air distribution pipe 7 and the stand 10; By setting the torsion spring 21, the first half-circle gear 19, and the rotating gear 20, the air distribution pipe 7 can rotate cyclically between 0° and 180° during ventilation operation. By setting the above-mentioned angle of rotation of the air distribution pipe 7, the ventilation coverage area and ventilation efficiency of the ventilation device per unit time in the mine are effectively improved. A rotatable ash stripping shaft 4 is installed between the inner surfaces of the bellows 1 and at a position corresponding to the position below the forward and reverse alternating transmission component, and a group of ash stripping protrusions 5 are installed on the ash stripping shaft 4; Each ash stripping protrusion 5 is adapted to be connected with the ventilation filter cloth 3; like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the forward and reverse alternating transmission components include a large gear shaft 23, a small gear shaft 24 and a belt shaft 25 that are rotatably connected to the bellows 1. The output shaft at the other end of the double-headed motor 11 and the large gear shaft 23 are both equipped with second bevel gears, and the two second bevel gears are meshed with each other. A second half-ring gear 26 is mounted on the large gear shaft 23, a toothed plate 27 is slidably mounted on the bellows 1, and a first elastic limiting member 28 is mounted between the toothed plate 27 and the bellows 1; The tooth plate 27 is provided with an upper tooth surface and a lower tooth surface respectively. The second half-ring gear 26 is connected to the lower tooth surface in transmission. A synchronous gear 29 is installed on the belt shaft 25. The synchronous gear 29 is connected to the upper tooth surface in transmission. A second synchronous belt is installed on the belt shaft 25. Both the winding rollers 2 are connected to the second synchronous belt in transmission. The large gear shaft 23 is connected to the small gear shaft 24 in transmission through the third synchronous belt. The small gear shaft 24 and the ash stripping shaft 4 are both equipped with a third bevel gear, and the two third bevel gears are meshed with each other. The radius of the second half-circle gear 26 is 8 times the radius of the synchronous gear 29; By setting the forward and reverse alternating transmission components, the two rollers 2 can set a cycle and alternate forward and reverse; During the forward rotation cycle and the reverse rotation cycle of the winding roller 2, the winding roller 2 rotates for a set number of turns; By alternately rotating the two rollers 2 forward and reverse, the ventilation filter cloth 3 can reciprocate within a set stroke during the ventilation operation. The reciprocating motion of the ventilation filter cloth 3 allows the ventilation filter cloth 3 to be recycled and effectively reduces the clogging rate of the ventilation filter cloth 3. When the ventilation filter cloth 3 reciprocates within the set stroke, the ash stripping shaft 4 rotates at a set speed. After the ash stripping shaft 4 rotates, the ash stripping protrusion 5 is set, so that the ventilation filter cloth 3 can be reciprocated when performing the air filtering operation. The reciprocating deformation of the ventilation filter cloth 3 can make the impurities adhered to the ventilation filter cloth 3 quickly shake off due to the deformation of the ventilation filter cloth 3, thereby effectively reducing the ash accumulation rate of the ventilation filter cloth 3. The reciprocating deformation of the ventilation filter cloth 3 can change the angle of the mesh holes on the ventilation filter cloth 3 relative to the airflow, thereby improving the ventilation efficiency and ventilation speed of the ventilation filter cloth 3.

[0024] Between the inner surfaces of the bellows 1 are installed tensioning and deformation anti-cleaning components for tensioning the ventilation filter cloth 3 and deforming the ventilation filter cloth 3 to make it air-cleaning and self-cleaning; The tensioning and deformation anti-clearing component includes an air duct 30 and two tensioning frames 31 slidably connected between the inner surface of the bellows 1, and a set of second elastic limiters 32 are installed between each tensioning frame 31 and the bellows 1; A convex roller 33 and a tensioning roller 34 are rotatably mounted on the inner wall of each tensioning frame 31, and the tensioning roller 34 is connected to the convex roller 33 through an annular toothed belt. The tensioning roller 34 and the convex roller 33 are both adapted to be connected with the ventilation filter cloth 3; like Figure 1 、 Figure 7 and Figure 8 As shown, the air inlet end of the air duct 30 is connected to the air outlet hood 6, and the air outlet port of the air duct 30 is connected to a three-way hose 35. The other two ends of the three-way hose 35 are respectively connected to the inner cavity of the two convex rollers 33 for rotation. A group of air outlet nozzles 36 are opened on the convex rollers 33.

[0025] The axis of the air outlet nozzle 36 is perpendicular to the rotation axis of the convex roller 33. An induced draft fan is installed inside the induced draft pipe 30, and a one-way ventilation valve is provided at the connection between the induced draft pipe 30 and the air outlet cover 6. The ventilation duct 30, the induced draft fan and the one-way ventilation valve are arranged so that the induced draft fan can only draw air in one direction from the air outlet hood 6; When the ventilation filter cloth 3 moves, the convex roller 33 and the tensioning roller 34 rotate synchronously. After the convex roller 33 rotates, it can cyclically change the relative angle between the air outlet nozzle 36 and the ventilation filter cloth 3, and then cyclically change the anti-cleaning angle of the air outlet nozzle 36 to the ventilation filter cloth 3, thereby improving the anti-cleaning effect of dust adhering to the ventilation filter cloth 3; At the same time, the convex structure of the convex roller 33 allows the air outlet holes 36 to further deform when acting on the ventilation filter cloth 3, thereby effectively improving the anti-cleaning and dust removal efficiency of the ventilation filter cloth 3 and the physical deformation type dust stripping effect.

[0026] The tensioning and deformation anti-cleaning component also includes two ash storage drawers 37 slidably connected to the inner wall of the bellows 1.

[0027] By providing the two ash storage bins 37 , the dust peeled off from the ventilation filter cloth 3 can be effectively collected.

[0028] The working principle of the present invention is: when the ventilation device is working, the double-headed motor 11 continuously outputs the rotation speed. After the double-headed motor 11 outputs the rotation speed, it drives the square shaft 12 and the differential shaft 16 to rotate. After the differential shaft 16 rotates, the polarization protrusion 17, the guide wheel 15 and the reset spring 14 are set, so that the fan shaft 8 and the fan blades 9 can vibrate back and forth within the set stroke during the rotation process. The vibration of the fan blades 9 when working can effectively reduce the dust accumulation rate and maintenance cost on the surface of the fan blades 9. At the same time, the up and down movement of the fan blades 9 can reciprocally adjust the distance between the fan blades 9 and the air distribution pipe 7, thereby reciprocatingly adjusting the air outlet intensity of the air distribution pipe 7, and then realizing periodic adjustment of the air outlet intensity. Switching, through the cyclic adjustment conversion of the air outlet intensity, the ventilation efficiency and ventilation effect of the device are effectively improved. Through the setting of the torsion spring 21, the first half-circle gear 19 and the rotating gear 20, the air distribution pipe 7 can rotate cyclically at 0°-180° when the ventilation device is performing ventilation operation. The above-mentioned angle rotation setting of the air distribution pipe 7 effectively improves the ventilation coverage area and ventilation efficiency of the ventilation device per unit time in the mine. Through the setting of the forward and reverse alternating transmission components, the two rollers 2 can be set to rotate forward and reverse alternately in a set cycle. In the forward rotation cycle of the roller 2 and the reverse cycle of the roller 2, the roller 2 rotates a set number of times. The alternating forward and reverse rotation of the ventilation filter cloth 3 makes it possible for the ventilation filter cloth 3 to reciprocate within the set stroke during the ventilation operation. The reciprocating motion of the ventilation filter cloth 3 allows the ventilation filter cloth 3 to be recycled and the blockage rate of the ventilation filter cloth 3 is effectively reduced. When the ventilation filter cloth 3 reciprocates within the set stroke, the ash stripping shaft 4 rotates at a set speed. After the ash stripping shaft 4 rotates, the ash stripping protrusion 5 is set, so that the ventilation filter cloth 3 can be reciprocated when performing the air filtering operation. The reciprocating deformation of the ventilation filter cloth 3 allows the impurities adhering to the ventilation filter cloth 3 to be quickly shaken off due to the deformation of the ventilation filter cloth 3, thereby effectively reducing the ash deposition rate of the ventilation filter cloth 3 and the ventilation filter cloth 3. The reciprocating deformation of the air filter cloth 3 can change the angle of the mesh holes on the ventilation filter cloth 3 relative to the airflow, thereby improving the ventilation efficiency and ventilation speed of the ventilation filter cloth 3. When the ventilation filter cloth 3 moves, the convex roller 33 and the tensioning roller 34 rotate synchronously. After the convex roller 33 rotates, on the one hand, it can cyclically change the relative angle between the air outlet nozzle 36 and the ventilation filter cloth 3, and then cyclically change the anti-cleaning angle of the air outlet nozzle 36 to the ventilation filter cloth 3, thereby improving the anti-cleaning effect of dust adhered to the ventilation filter cloth 3. At the same time, through the convex structure of the convex roller 33, the air outlet nozzle 36 can be further deformed when acting on the ventilation filter cloth 3, thereby effectively improving the anti-cleaning and dust removal efficiency of the ventilation filter cloth 3 and the physical deformation type dust stripping effect.

[0029] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A mining ventilation device that is easily adjustable, comprising a wind box (1), characterized in that: Two rollers (2) are rotatably mounted between the inner surfaces of the bellows (1), a forward and reverse alternating transmission component is mounted on the bellows (1), the two rollers (2) are driven by the forward and reverse alternating transmission component and periodically rotate forward and reverse alternately, a ventilation filter cloth (3) is wound between the two rollers (2), a rotatable ash stripping shaft (4) is mounted between the inner surfaces of the bellows (1) and at a position corresponding to the position below the forward and reverse alternating transmission component, a group of ash stripping protrusions (5) are mounted on the ash stripping shaft (4), each of the ash stripping protrusions (5) is adaptively connected to the ventilation filter cloth (3), and the bellows (1) ) are installed between the inner surfaces of the bellows (1) and the inner surfaces thereof, a tensioning and deformation anti-cleaning component for tensioning the ventilation filter cloth (3) and deforming the ventilation filter cloth (3) to make it self-cleaning; an air outlet hood (6) is connected to the top surface of the bellows (1) and the position corresponding to the top of the ventilation filter cloth (3); an air distribution pipe (7) is rotatably connected to the air outlet hood (6); a reciprocating driving component for driving the air distribution pipe (7) to reciprocate is installed on the air outlet hood (6); a fan shaft (8) that can vibrate and rotate synchronously is connected to the reciprocating driving component; and a plurality of fan blades (9) are installed on the fan shaft (8) and the position corresponding to the inner side of the air outlet hood (6).

2. The easily adjustable mining ventilation device according to claim 1, characterized in that: The reciprocating drive component comprises a stand (10) mounted on the air outlet cover (6), a double-headed motor (11) connected to the stand (10), and a square shaft (12) rotatably connected to the stand (10); an output shaft at one end of the double-headed motor (11) is connected to a first synchronous belt; the square shaft (12) is connected to the first synchronous belt; the fan shaft (8) is driven by the square shaft (12); a vibration blade seat (13) is slidably mounted on the inner wall of the stand (10); the vibration blade seat (13) is connected to the first synchronous belt; A return spring (14) is mounted on the bottom surface of the vertical frame (10) and is limited by the vertical frame (10); a guide wheel (15) is rotatably mounted on the vibration blade seat (13); a differential shaft (16) is rotatably mounted on the inner wall of the vertical frame (10); first bevel gears are mounted on both the differential shaft (16) and the square shaft (12); the two first bevel gears are meshed with each other; a polarization protrusion (17) is mounted on the differential shaft (16); and the polarization protrusion (17) is adaptively connected to the guide wheel (15).

3. The easily adjustable mining ventilation device according to claim 2, characterized in that: A square groove with a top opening fixedly provided inside the fan shaft (8) and slidably connected to the square shaft (12), wherein the cross sections of the square shaft (12) and the square groove are both regular polygons.

4. The easily adjustable mining ventilation device according to claim 2, characterized in that: The reciprocating drive component also includes a circular shaft (18) rotatably mounted on the stand (10), the circular shaft (18) being transmission-connected to a first synchronous belt, a first half-circle gear (19) being mounted on the circular shaft (18), a rotating gear (20) being mounted on the air distribution pipe (7), the first half-circle gear (19) being transmission-connected to the rotating gear (20), and a torsion spring (21) being provided at a rotationally connected position between the air distribution pipe (7) and the stand (10).

5. The easily adjustable mining ventilation device according to claim 1, characterized in that: Ventilation mesh plates (22) are installed around the wind box (1) and at positions corresponding to the bottom of the ventilation filter cloth (3). A set of universal casters are installed on the bottom surface of the wind box (1). The air outlet direction of the air distribution pipe (7) is perpendicular to the rotation axis of the fan shaft (8).

6. The easily adjustable mining ventilation device according to claim 2, characterized in that: The forward and reverse alternating transmission component comprises a large gear shaft (23), a small gear shaft (24) and a belt shaft (25) which are rotatably connected to the bellows (1); a second bevel gear is mounted on the output shaft at the other end of the double-headed motor (11) and the large gear shaft (23); the two second bevel gears are meshed with each other; a second half-circle gear (26) is mounted on the large gear shaft (23); a toothed plate (27) is slidably mounted on the bellows (1); a first elastic stopper (28) is mounted between the toothed plate (27) and the bellows (1); and a first elastic stopper (28) is mounted on the toothed plate (27). An upper tooth surface and a lower tooth surface are provided respectively, the second half-circle gear (26) is transmission-connected to the lower tooth surface, a synchronous gear (29) is mounted on the belt shaft (25), the synchronous gear (29) is transmission-connected to the upper tooth surface, a second synchronous belt is transmission-connected on the belt shaft (25), both of the two winding rollers (2) are transmission-connected to the second synchronous belt, the large tooth shaft (23) is transmission-connected to the small tooth shaft (24) through a third synchronous belt, the small tooth shaft (24) and the ash stripping shaft (4) are both installed with a third bevel gear, and the two third bevel gears are meshed with each other.

7. The easily adjustable mining ventilation device according to claim 6, characterized in that: The radius of the second half-circle gear (26) is 5 to 9 times the radius of the synchronous gear (29).

8. The easily adjustable mining ventilation device according to claim 1, characterized in that: The tensioning and deforming anti-cleaning component comprises an air duct (30) and two tensioning frames (31) slidably connected between the inner surface of the bellows (1); a group of second elastic limiters (32) are installed between each of the tensioning frames (31) and the bellows (1); a convex roller (33) and a tensioning roller (34) are rotatably installed on the inner wall of each of the tensioning frames (31); the tensioning roller (34) is transmission-connected to the convex roller (33) via an annular toothed belt; the tensioning roller (34) and the convex roller (33) are both adaptively connected to the ventilation filter cloth (3); the air inlet end of the air duct (30) is connected to the air outlet hood (6); the air outlet port of the air duct (30) is connected to a three-way hose (35); the other two ends of the three-way hose (35) are respectively rotatably connected to the inner cavities of the two convex rollers (33); and a group of air outlet nozzles (36) are provided on the convex roller (33).

9. The easily adjustable mining ventilation device according to claim 8, characterized in that: The axis of the air outlet nozzle (36) is perpendicular to the rotation axis of the convex roller (33); an induced draft fan is installed inside the induced draft pipe (30); and a one-way ventilation valve is provided at the connection point between the induced draft pipe (30) and the air outlet hood (6).

10. The easily adjustable mining ventilation device according to claim 8, characterized in that: The tensioning and deforming anti-cleaning component also includes two ash storage drawers (37) slidably connected to the inner wall of the bellows (1).

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