A ventilation device for mining that is convenient for adjustment

Abstract

The present invention relates to the technical field of ventilation devices, and particularly to a ventilation device for mining that is convenient to adjust, including a bellows. Two winding 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 winding rollers are driven by the forward and reverse alternating transmission component and periodically rotate forward and reverse alternately. A ventilation filter cloth is wound between the two winding rollers. A rotatable ash stripping shaft is installed between the inner surfaces of the bellows at a position corresponding to the lower part of the forward and reverse alternating transmission component, and a group of ash stripping protrusions are installed on the ash stripping shaft. Through the alternating forward and reverse rotation of the two winding rollers, when the ventilation operation is carried out, the ventilation filter cloth can reciprocate within a set stroke. Through the reciprocating movement of the ventilation filter cloth, the ventilation filter cloth can be recycled.

Description

Technical Field

[0001] The invention relates to the technical field of ventilation devices, and in particular to a ventilation device for mining which 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 serious. The health and safety problems caused by coal dust are particularly prominent. High-concentration coal dust will not only cause occupational diseases but may also lead to dust explosion accidents, seriously affecting the safe production of mines. Therefore, ventilation and dust reduction measures for mine tunnels are essential.

[0003] Good ventilation can lower 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 which is easy to adjust.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is: an easily adjustable mining ventilation device, 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 alternately, 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 blocks are all adaptably connected to the ventilation filter cloth, and tensioning and deformation anti-cleaning components for tensioning the ventilation filter cloth and deforming the ventilation filter cloth to make it self-cleaning are installed between the inner surfaces of the bellows, an air outlet hood is connected to the top surface of the bellows and the position corresponding to the top of the ventilation filter cloth, an air distribution duct is rotatably connected to the air outlet hood, a reciprocating driving component for driving the air distribution duct to reciprocate is installed on the air outlet hood, a fan shaft that can vibrate and rotate synchronously is transmission-connected to the reciprocating driving component, and a plurality of fan blades are installed on the fan shaft and at the position corresponding to the inner side of the air outlet hood.

[0007] Preferably, the reciprocating driving member includes a vertical frame mounted on the air outlet hood, a double-headed motor connected to the vertical frame, and a square shaft rotatably connected to the vertical frame. One output shaft of the double-headed motor is drivingly connected to a first synchronous belt, the square shaft is drivingly connected to the first synchronous belt, and the fan shaft is driven by the square shaft. A vibrating blade seat is slidably mounted on the inner wall of the vertical frame. A return spring limited by the vertical frame is mounted on the bottom surface of the vibrating blade seat. A guiding wheel is rotatably mounted on the vibrating blade seat. A differential shaft is rotatably mounted on the inner wall of the vertical frame. First bevel gears are mounted on both the differential shaft and the square shaft, and the two first bevel gears mesh with each other. A polarized convex block is mounted on the differential shaft, and the polarized convex block is adaptively connected to the guiding wheel.

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

[0009] Preferably, the reciprocating driving member further includes a circular shaft rotatably mounted on the vertical frame. The circular shaft is drivingly connected to the first synchronous belt. A first half-round gear is mounted on the circular shaft. A rotating gear is mounted on the air distribution duct. The first half-round gear is drivingly connected to the rotating gear. A torsion spring is provided at the rotational connection between the air distribution duct and the vertical frame.

[0010] Preferably, ventilation net plates are installed around the air box at positions corresponding to the lower part of the ventilation filter cloth. A set of universal casters are mounted on the bottom surface of the air box. The air outlet direction of the air distribution duct is perpendicular to the rotation axis of the fan shaft.

[0011] Preferably, the forward and reverse alternating transmission member includes a large gear shaft, a small gear shaft, and a belt shaft rotatably connected to the air box. Second bevel gears are mounted on the other output shaft of the double-headed motor and the large gear shaft, and the two second bevel gears mesh with each other. A second half-round gear is mounted on the large gear shaft. A toothed plate is slidably mounted on the air box. A first elastic limiting member is mounted between the toothed plate and the air box. Upper and lower tooth surfaces are respectively provided on the toothed plate. The second half-round gear is drivingly connected to the lower tooth surface. A synchronous gear is mounted on the belt shaft. The synchronous gear is drivingly connected to the upper tooth surface. A second synchronous belt is drivingly mounted on the belt shaft. Both of the two winding rollers are drivingly connected to the second synchronous belt. The large gear shaft is drivingly connected to the small gear shaft through a third synchronous belt. Third bevel gears are mounted on both the small gear shaft and the ash stripping shaft, and the two third bevel gears mesh with each other.

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

[0013] Preferably, the tensioning and deformation anti - clogging component includes an air guiding pipe and two tensioning frames slidably connected between the inner surfaces of the air box. A set of second elastic limiting members are installed between each tensioning frame and the air box. A convex roller and a tensioning roller are rotatably installed on the inner wall of each tensioning frame. The tensioning roller is drivingly connected to the convex roller through an annular toothed belt. Both the tensioning roller and the convex roller are adaptively connected to the ventilation filter cloth. The air inlet end of the air guiding pipe is communicated with the air outlet hood, and the air outlet port of the air guiding pipe is communicated with a three - way hose. The other two ends of the three - way hose are respectively rotationally communicated with the inner cavities of the two convex rollers. A set of air outlet spray holes are formed on the convex roller.

[0014] Preferably, the axis of the air outlet spray holes is perpendicular to the rotation axis of the convex roller. An air blower is installed inside the air guiding pipe, and a one - way ventilation valve is provided at the connection between the air guiding pipe and the air outlet hood.

[0015] Preferably, the tensioning and deformation anti - clogging component further includes two ash storage drawers slidably connected to the inner wall of the air box.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Through the setting of the forward and reverse alternating transmission component, the two winding rollers can rotate forward and reverse alternately in a set period. During the forward rotation period and the reverse rotation period of the winding roller, the winding roller rotates a set number of turns. Through the alternating forward and reverse rotation of the two winding rollers, when the ventilation operation is carried out, the ventilation filter cloth can reciprocate within a set stroke. Through the reciprocating movement of the ventilation filter cloth, the ventilation filter cloth can be recycled, and the blockage rate of the ventilation filter cloth can be effectively reduced. And when the ventilation filter cloth reciprocates within a set stroke, the ash - stripping shaft rotates at a set speed. After the ash - stripping shaft rotates, through the setting of the ash - stripping convex blocks, the ventilation filter cloth can reciprocally deform during the air - filtering operation. Through the reciprocating deformation of the ventilation filter cloth, the impurities adhered to the ventilation filter cloth can be quickly shaken off due to the deformation of the ventilation filter cloth, thereby effectively reducing the ash - forming rate of the ventilation filter cloth. And through the reciprocating deformation of the ventilation filter cloth, the angle of the mesh holes on the ventilation filter cloth relative to the air flow can be changed, thereby improving the ventilation efficiency and ventilation speed of the ventilation filter cloth.

[0018] 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 spray holes and the ventilation filter cloth, and then cyclically change the anti - clogging angle of the air outlet spray holes to the ventilation filter cloth, thereby improving the anti - clogging effect of the dust adhered to the ventilation filter cloth. At the same time, through the convex structure setting of the convex roller, the ventilation filter cloth can be further deformed when the air outlet spray holes act on it, thereby effectively improving the anti - clogging and ash - discharging efficiency of the ventilation filter cloth and the physical deformation - type ash - stripping effect.

[0019] 3. In the present invention, by setting the torsion spring, the first half circle gear and the rotating gear, the air distribution duct 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 duct, the ventilation coverage area and ventilation efficiency of the ventilation device per unit time in the mine are effectively improved.

[0020] 4. When the ventilation device in the present invention is working, the double-headed motor continuously outputs the rotation speed. After the double-headed motor outputs the rotation 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 reciprocate within the set stroke during the rotation process. The vibration of the fan blades when 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 duct, thereby reciprocatingly adjusting the air outlet intensity of the air distribution duct, 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

[0021] Figure 1 It is a structural schematic diagram of a mining ventilation device that is easy to adjust according to the present invention;

[0022] Figure 2 For the present invention Figure 1 A schematic diagram of the structure from another perspective;

[0023] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 4 For the present invention Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0025] Figure 5 It is a schematic diagram of the structure of the polarization protrusion and the stand of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the round shaft and the square shaft of the present invention;

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the fan shaft and the circular shaft of the present invention;

[0028] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point C in the middle.

[0029] 1. Bellows; 2. Roller; 3. Ventilation filter cloth; 4. Ash stripping shaft; 5. Ash stripping bump; 6. Air outlet cover; 7. Air distribution duct; 8. Fan shaft; 9. Fan blades; 10. Stand; 11. Double-head 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 circle 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

[0030] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0031] like Figures 1 - 8 The mining ventilation device shown in the figure is easy to adjust, comprising a wind box 1, between the inner surfaces of which two rollers 2 are rotatably mounted, a forward and reverse alternating transmission component is mounted on the wind box 1, the two rollers 2 are driven by the forward and reverse alternating transmission component and periodically rotate forward and reverse alternately, and a ventilation filter cloth 3 is wound between the two rollers 2;

[0032] 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;

[0033] Ventilation mesh plates 22 are installed around the bellows 1 and at positions corresponding to the bottom of the ventilation filter cloth 3, and a set of universal casters are installed on the bottom surface of the bellows 1;

[0034] The top surface of the wind 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 reciprocate is installed on the air outlet cover 6;

[0035] 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 and at positions corresponding to the inner side of the air outlet cover 6;

[0036] The air outlet direction of the air distribution duct 7 is perpendicular to the rotation axis of the fan shaft 8;

[0037] like Figure 1 , Figure 5 and Figure 6As 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 double-headed motor 11 output shaft is connected to the first synchronous belt, and the square shaft 12 is connected to the first synchronous belt;

[0038] The fan shaft 8 is driven by the square shaft 12;

[0039] A square groove with an opening at the top and slidably connected to the square shaft 12 is fixedly provided inside the fan shaft 8, and the cross sections of the square shaft 12 and the square groove are both regular polygons;

[0040] By setting the square shaft 12 and the regular polygonal cross section of the square groove, the square shaft 12 can continuously drive the fan shaft 8 when the vibration blade moves up and down;

[0041] A vibration blade seat 13 is slidably mounted on the inner wall of the stand 10, and a return spring 14 limited by the stand 10 is mounted on the bottom surface of the vibration blade seat 13;

[0042] 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 stand 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 adapted and connected to the guide wheel 15;

[0043] 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 then 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 reciprocate and vibrate within the set stroke during the rotation process;

[0044] The vibration of the fan blade 9 during operation effectively reduces the dust accumulation rate and maintenance cost on the surface of the fan blade 9;

[0045] At the same time, the fan blades 9 move up and down to reciprocately 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 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;

[0046] like Figure 1 , Figure 5 , Figure 6 and Figure 7As shown, the reciprocating drive component further includes a circular shaft 18 rotatably mounted on the vertical frame 10. The circular shaft 18 is in belt drive connection with the first synchronous belt. A first semi-circular gear 19 is mounted on the circular shaft 18, and a rotating gear 20 is mounted on the air distribution duct 7. The first semi-circular gear 19 is in transmission connection with the rotating gear 20. A torsion spring 21 is provided at the rotational connection between the air distribution duct 7 and the vertical frame 10;

[0047] Through the settings of the torsion spring 21, the first semi-circular gear 19 and the rotating gear 20, when the ventilation device performs ventilation operations, the air distribution duct 7 can rotate cyclically between 0° and 180°. Through the above-mentioned angular rotation setting of the air distribution duct 7, the ventilation coverage area and ventilation efficiency of the ventilation device in the mine per unit time are effectively improved;

[0048] A rotatable ash stripping shaft 4 is installed between the inner surfaces of the air box 1 and at a position corresponding to the lower part of the forward and reverse alternating drive component. A group of ash stripping protrusions 5 are installed on the ash stripping shaft 4;

[0049] Each ash stripping protrusion 5 is adaptively connected to the ventilation filter cloth 3;

[0050] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the forward and reverse alternating drive component includes a large tooth shaft 23, a small tooth shaft 24 and a belt shaft 25 rotatably connected to the air box 1. Second bevel gears are installed on the other output shaft of the double-headed motor 11 and on the large tooth shaft 23, and the two second bevel gears are meshed with each other;

[0051] A second semi-circular gear 26 is installed on the large tooth shaft 23. A toothed plate 27 is slidably mounted on the air box 1, and a first elastic limiting member 28 is installed between the toothed plate 27 and the air box 1;

[0052] The toothed plate 27 is respectively provided with an upper tooth surface and a lower tooth surface. The second semi-circular gear 26 is in transmission connection with the lower tooth surface. A synchronous gear 29 is installed on the belt shaft 25, and the synchronous gear 29 is in transmission connection with the upper tooth surface. A second synchronous belt is drivingly installed on the belt shaft 25, and both two rollers 2 are in belt drive connection with the second synchronous belt. The large tooth shaft 23 is in belt drive connection with the small tooth shaft 24 through a third synchronous belt. Third bevel gears are installed on both the small tooth shaft 24 and the ash stripping shaft 4, and the two third bevel gears are meshed with each other;

[0053] The radius of the second semi-circular gear 26 is 8 times the radius of the synchronous gear 29;

[0054] Through the setting of the forward and reverse alternating drive component, the two rollers 2 can perform forward and reverse rotations alternately at a set period;

[0055] During the forward rotation period and the reverse rotation period of the roller 2, the roller 2 rotates a set number of turns;

[0056] By the alternating forward and reverse rotation of the two rollers 2, the ventilation filter cloth 3 can reciprocate within a set stroke during the ventilation operation. The reciprocating motion of the ventilation filter cloth 3 can make the ventilation filter cloth 3 recyclable and effectively reduce the blockage rate of the ventilation filter cloth 3.

[0057] 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 filtering air. 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.

[0058] 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;

[0059] 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 stoppers 32 are installed between each tensioning frame 31 and the bellows 1;

[0060] A convex roller 33 and a tension roller 34 are rotatably mounted on the inner wall of each tensioning frame 31, and the tensioning roller 34 is transmission-connected to the convex roller 33 via an annular toothed belt;

[0061] The tensioning roller 34 and the convex roller 33 are both adapted and connected to the ventilation filter cloth 3;

[0062] 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 cavities of two convex rollers 33 for rotation. A group of air outlet nozzles 36 are opened on the convex rollers 33.

[0063] 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. A one-way ventilation valve is provided at the connection between the induced draft pipe 30 and the air outlet cover 6.

[0064] 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 from the air outlet hood 6 in one direction;

[0065] When the ventilation filter cloth 3 moves, the convex roller 33 and the tension roller 34 spin synchronously. After the convex roller 33 spins, on the one hand, it can cyclically change the relative angle between the air outlet spray holes 36 and the ventilation filter cloth 3, and then cyclically change the anti-cleaning angle of the air outlet spray holes 36 to the ventilation filter cloth 3, thereby improving the anti-cleaning effect of the dust adhered to the ventilation filter cloth 3;

[0066] At the same time, through the convex structure setting of the convex roller 33, the air outlet spray holes 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.

[0067] The tensioning and deformation anti-cleaning component further includes two ash storage drawers 37 slidably connected to the inner wall of the air box 1.

[0068] Through the setting of the two ash storage drawers 37, the dust stripped from the ventilation filter cloth 3 can be effectively collected.

[0069] The working principle of the present invention is as follows: When the ventilation device is working, the double-headed motor 11 continuously outputs a rotational speed. After the double-headed motor 11 outputs the rotational speed, it then drives the square shaft 12 and the differential shaft 16 to rotate. After the differential shaft 16 rotates, through the settings of the polarized convex block 17, the guiding wheel 15, and the return spring 14, the fan shaft 8 and the fan blade 9 can reciprocate within a set stroke while rotating. Through the vibration generated when the fan blade 9 is working, the dust accumulation rate on the surface of the fan blade 9 and the maintenance cost can be effectively reduced. At the same time, through the up and down movement of the fan blade 9, the distance between the fan blade 9 and the air distribution duct 7 can be reciprocally adjusted, thereby reciprocally adjusting the air outlet intensity of the air distribution duct 7, 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 can be effectively improved. Through the settings of the torsion spring 21, the first half-round gear 19, and the rotating gear 20, when the ventilation device conducts ventilation operations, the air distribution duct 7 can rotate cyclically between 0° and 180°. Through the above-mentioned angle rotation setting of the air distribution duct 7, the ventilation coverage area and ventilation efficiency of the ventilation device in the mine per unit time can be effectively improved. Through the setting of the forward and reverse alternating transmission components, the two rollers 2 can rotate forward and reverse alternately at a set period. During the forward rotation period of the roller 2 and the reverse rotation period of the roller 2, the roller 2 rotates a set number of turns. Through the alternating forward and reverse rotation of the two rollers 2, when the ventilation operation is carried out, the ventilation filter cloth 3 can reciprocate within a set stroke. Through the reciprocating movement of the ventilation filter cloth 3, the ventilation filter cloth 3 can be recycled, and the blockage rate of the ventilation filter cloth 3 can be effectively reduced. When the ventilation filter cloth 3 reciprocates within a set stroke, the dust removal shaft 4 rotates at a set speed. After the dust removal shaft 4 rotates, through the setting of the dust removal convex block 5, the ventilation filter cloth 3 can reciprocally deform during the air filtration operation. Through the reciprocating deformation of the ventilation filter cloth 3, the impurities adhered to the ventilation filter cloth 3 can be quickly shaken off due to the deformation of the ventilation filter cloth 3, thereby effectively reducing the dust accumulation rate of the ventilation filter cloth 3. And through the reciprocating deformation of the ventilation filter cloth 3, the angle of the mesh holes of the ventilation filter cloth 3 relative to the air flow can be changed, 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 tension roller 34 spin synchronously. After the convex roller 33 spins, on the one hand, it can cyclically change the relative included angle between the air outlet spray holes 36 and the ventilation filter cloth 3, and then cyclically change the anti-cleaning angle of the air outlet spray holes 36 to the ventilation filter cloth 3, thereby improving the anti-cleaning effect of the dust adhered to the ventilation filter cloth 3. At the same time, through the convex structure setting of the convex roller 33, the air outlet spray holes 36 can 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 removal effect.

[0070] The foregoing has shown and described 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 by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection required 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 bottom of 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) ) is 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 transmission-connected to the reciprocating driving component; a plurality of groups 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); 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); 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.

2. The easily adjustable mining ventilation device according to claim 1, 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.

3. The easily adjustable mining ventilation device according to claim 1, 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).

4. 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).

5. The easily adjustable mining ventilation device according to claim 1, characterized in that: The radius of the second half-circle gear (26) is 5 to 9 times the radius of the synchronous gear (29).

6. 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).

7. The easily adjustable mining ventilation device according to claim 6, 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).

8. The easily adjustable mining ventilation device according to claim 6, 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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