Coal mine operation ventilation device and method thereof

Abstract

The invention belongs to the technical field of ventilation and filtration, and particularly relates to a coal mine operation ventilation device and method. Comprising a ventilation body; the side face of the ventilation body is in butt joint with an air pipe through a flange plate, a retention support is installed in the air pipe, a double-shaft motor is installed on the retention support, hollow round blocks are installed at the two opposite output ends of the double-shaft motor, and retention connecting devices are arranged on the hollow round blocks. Retention cylinders are arranged on the two sides of the retention support, and impellers are installed at the opposite ends of the two retention cylinders. A plurality of filtering circular plates are arranged on the two sides of the double-shaft motor; therefore, the situation that the motion trail of airflow becomes complex due to instability of the airflow during flowing due to improper distance between the impeller and the filtering circular plate is avoided, impurities are effectively intercepted by the filtering circular plate, the filtering effect and efficiency of the filtering circular plate are improved, the situation that abrasion of local areas is aggravated due to inconsistent abrasion degrees of the filtering circular plate during use is avoided, and the service life of the filtering circular plate is prolonged. The service life of the filtering circular plate is prolonged; and the limitation of the device in use is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of ventilation and filtration, and in particular relates to a ventilation device and a method for coal mine operations. Background Art

[0002] When the ventilation device used in coal mines is working, filter plates are generally used to intercept tiny suspended particles or impurities such as coal dust contained in the air to avoid affecting the quality of the air transported during ventilation; but since the distance between the filter plate and the fan blades cannot be adjusted, it is difficult for the device to easily adjust the installation position of the filter plate according to the actual airflow conditions. If the distance between the fan blades and the filter plate is not appropriate when the device is in use, it will also cause instability in the airflow. Unstable airflow will not only complicate the movement trajectory of impurities in the airflow, making it difficult for impurities to be effectively intercepted by the filter plate, reducing the filtering effect and efficiency of the filter plate, but also cause uneven force on the filter plate, resulting in different airflow impact intensities on different areas of the filter plate surface, resulting in inconsistent wear of the filter plate during use, and the existence of local wear aggravation and other phenomena, thereby shortening the service life of the filter plate, making the device have strong limitations when used. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a coal mine operation ventilation device and method thereof, which effectively solves the problems in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coal mine operation ventilation device, comprising a ventilation body; a side of the ventilation body is butt-jointed with an air duct through a flange, a retaining bracket is installed in the air duct, a dual-axis motor is installed on the retaining bracket, two opposite output ends of the dual-axis motor are respectively installed with hollow round blocks, and a retaining connecting device is arranged on the hollow round block; retaining cylinders are arranged on both sides of the retaining bracket, and impellers are arranged at the opposite ends of the two retaining cylinders; the retaining connecting device is used to install and disassemble the impeller at the output end of the dual-axis motor; a plurality of filter discs are arranged on both sides of the dual-axis motor, and the filter discs slide in the air duct; a penetrating rotating shaft is installed on the side of the filter disc, and rotating gears are installed at both ends of the rotating shaft, and a rotating cleaning component is installed on the rotating gear, and the rotating cleaning component is used to improve the smoothness of the gas when passing through the filter disc; a locking distance regulating mechanism is arranged on the air duct, and the locking distance regulating mechanism is used to adjust the distance between the filter disc and the impeller.

[0005] Preferably, the locking distance control mechanism includes a plurality of distance adjusting sliders installed on the side wall of the filter circular plate; distance adjusting grooves extending to the edge of the inner wall of the air duct are provided on both sides, and the distance adjusting grooves are slidably matched with the distance adjusting sliders; a plurality of distance adjusting holes are provided on the side of the distance adjusting slider away from the filter circular plate.

[0006] Preferably, a guide slide column is fixedly installed on the outer wall of the air duct, and a guide slider is slidably connected to the guide slide column, and a pull ring is provided on the guide slider; a guide spring is sleeved on the guide slide column, one end of the guide spring is connected to a guide limit plate, and the other end is fixedly connected to the guide slider, and two symmetrical guide square seats are installed on the side of the guide slider, and a clamping noise reduction unit is provided on the guide square seat; a distance adjusting block is connected to the side of the guide slider close to the air duct, and the distance adjusting block passes through the air duct and is connected to one of the distance adjusting holes; the guide limit plate is fixedly connected to the end of the guide slide column away from the air duct.

[0007] Preferably, the retaining connection device includes a retaining circular groove arranged on one end of the retaining cylinder close to the dual-axis motor, and the hollow round block is located in the retaining circular groove and the two are slidably matched; a plurality of straight and equidistantly arranged retaining inclined grooves are provided on opposite sides of the inner side wall of the retaining circular groove, and the inclined surfaces of the retaining inclined grooves face the dual-axis motor; a closed partition is installed at the inner center of the hollow round block, and a resistance slide is installed on the opposite sides of the closed partition, and a resistance slide column is slidably connected inside the resistance slide; a resistance spring is provided inside the resistance slide, one end of the resistance spring is fixedly connected to the inner bottom surface of the resistance slide, and the other end is fixedly connected to the end point of the resistance slide column located inside the resistance slide.

[0008] Preferably, the opposite ends of the two resistance slide columns are equipped with retaining bevel blocks, and the inclined surfaces on the retaining bevel blocks are in an outward-facing O-shape; the inclined surfaces of the two retaining bevel blocks face opposite to each other, and the retaining bevel blocks fit into the retaining bevel grooves; the outer wall of the hollow circular block is also provided with a resistance slide groove connected to its interior, and the resistance slide groove and the retaining bevel block are slidably matched, and the initial position of the inclined surface of the retaining bevel block is located at the outer wall of the hollow circular block, and the outer wall of the hollow circular block fits into the inner wall of the retaining circular groove.

[0009] Preferably, the rotating dirt cleaning component includes one end of an auxiliary rotating shaft mounted on a pitch-adjusting slider, and the other end of the auxiliary rotating shaft is mounted with a plurality of blades, and the side faces of the blades are located in the airflow path; the auxiliary rotating shaft is arranged parallel to the filter circular plate; an auxiliary bevel gear is mounted on the auxiliary rotating shaft, and the auxiliary bevel gear is meshedly connected with a linkage bevel gear, and the linkage bevel gear is mounted on the rotating rotating shaft.

[0010] Preferably, both sides of the filter circular plate are provided with retaining rails, and a retaining slide is slidably connected to the retaining rails, and the retaining slide is fixedly installed on the distance-adjusting slider; the retaining rails are coaxial with the center of the filter circular plate; a retaining gear ring is installed on the retaining rails, and the retaining gear ring is meshingly connected with the rotating gear; a scraper is installed on the retaining gear ring, and the scraper contacts the side of the filter circular plate.

[0011] Preferably, the clamping noise reduction unit includes two displacement screws, which are symmetrically installed on both sides of the air duct; a displacement block is threadedly connected to the displacement screw, and two displacement cylinders are symmetrically slidably connected to the displacement block, and the displacement cylinders are fixedly installed on the outer wall of the air duct; a group of bending square columns are respectively installed on both sides of the displacement block, and a displacement cross plate is installed at the end point of each group of bending square columns located in the air duct; the bending square columns are slidably matched with the air duct; an elastic round rod is installed on the side of the displacement cross plate close to the dual-axis motor, and an energy-absorbing square plate is installed on the elastic round rod, and a rubber pad is provided on the energy-absorbing square plate, and the side of the dual-axis motor is located at the moving path of the rubber pad.

[0012] Preferably, symmetrical fixed pulleys are installed on both sides of the air duct; the clamping noise reduction unit also includes a cable, one end of the cable is connected to the guide square seat, and the other end is wrapped around the fixed pulley and connected to a winding roller, a driving shaft is installed on the winding roller, a driving base is installed on the driving shaft, and the driving base is installed on the air duct; one end of the driving shaft is connected to a clockwork spring, and the end point of the clockwork spring is connected to the driving base; the other end of the driving shaft is installed with a driving bevel gear; the displacement screw is connected to a displacement bevel gear, and the displacement bevel gear is meshingly connected with the driving bevel gear.

[0013] The present invention also provides a coal mine operation ventilation method, comprising the following steps: S1, start the dual-axis motor so that its opposite output ends respectively drive the two retaining cylinders to rotate through the retaining connection devices; S2. When the two retaining cylinders rotate, they will drive the impellers at the opposite ends to rotate, so as to generate airflow in the air duct for ventilation operation; S3. When the airflow flows in the air duct, the filter disc is set to intercept the tiny suspended particles or impurities such as coal dust contained in the air; S4. Operate the rotary cleaning assembly to clean the impurities intercepted on the filter disc to avoid excessive accumulation and blockage that affects the normal passage of airflow.

[0014] From the above, it can be seen that the coal mine operation ventilation device provided by the present invention is capable of completing the spacing adjustment operation between the filter disc and the impeller without the aid of any tools, so that the device can conveniently adjust the use and installation position of the filter disc according to the actual airflow conditions, thereby avoiding instability of the airflow during flow caused by inappropriate spacing between the impeller and the filter disc, and avoiding the instability of the airflow causing the movement trajectory of impurities in the airflow to become complicated, so that the impurities can be effectively intercepted by the filter disc, thereby improving the filtering effect and efficiency of the filter disc; at the same time, it avoids causing uneven force on the filter disc so that different areas of the filter disc surface are subjected to different airflow impact intensities, thereby avoiding inconsistent wear of the filter disc during use, resulting in aggravated wear in local areas, improving the service life of the filter disc, and reducing the limitations of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0016] In the attached picture: Figure 1 This is one of the overall structural schematic diagrams of the present invention; Figure 2 This is a cross-sectional view of the air duct of the present invention; Figure 3 This is a schematic diagram of the guide square seat structure of the present invention; Figure 4 This is the second schematic diagram of the overall structure of the present invention; Figure 5 This is an exploded view of the retaining cylinder of the present invention; Figure 6 It is a schematic diagram of the structure of the winding roller of the present invention; Figure 7 It is a cross-sectional view of the hollow circular block of the present invention; Figure 8 This is a schematic diagram of the structure of the distance-adjusting slider of the present invention; Fig. 9 It is a cross-sectional view of the elastic round rod of the present invention; Fig.10 It is a cross-sectional view of the retaining circular groove of the present invention; Fig.11 This is an exploded view of the distance adjustment plug block of the present invention; Fig.12 This is a schematic diagram of the resistance slide structure of the present invention; In the figure: 1. ventilation body; 2. air duct; 3. retaining bracket; 4. double-axis motor; 5. hollow round block; 6. retaining cylinder; 7. impeller; 8. filter disc; 9. rotating shaft; 10. rotating gear; 11. pitch-adjusting slider; 12. pitch-adjusting slide groove; 13. pitch-adjusting plug hole; 14. guide slide column; 15. guide slide block; 16. guide spring; 17. guide limit plate; 18. guide square seat; 19. pitch-adjusting plug block; 20. retaining round groove; 21. retaining inclined groove; 22. resistance slide cylinder; 23. resistance slide column; 24. resistance spring; 25. retaining inclined block; 26 , resistance slide; 27, auxiliary shaft; 28, blade; 29, auxiliary bevel gear; 30, linkage bevel gear; 31, fixed track; 32, fixed slide; 33, fixed gear ring; 34, scraper; 35, displacement screw; 36, displacement block; 37, displacement cylinder; 38, bending square column; 39, displacement cross plate; 40, elastic round rod; 41, energy absorbing square plate; 42, rubber pad; 43, fixed pulley; 44, cable; 45, winding roller; 46, driving shaft; 47, driving base; 48, spring spring; 49, driving bevel gear; 50, displacement bevel gear. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] Example, by Figures 1 to 12The present invention comprises a ventilation body 1; a duct 2 is butted against the side of the ventilation body 1 through a flange, a retaining bracket 3 is installed in the duct 2, a dual-axis motor 4 is installed on the retaining bracket 3, two opposite output ends of the dual-axis motor 4 are respectively installed with hollow round blocks 5, and a retaining connecting device is arranged on the hollow round block 5; retaining cylinders 6 are arranged on both sides of the retaining bracket 3, and impellers 7 are respectively installed at the opposite ends of the two retaining cylinders 6; the retaining connecting device is used to connect the impeller 7 at the output end of the dual-axis motor 4 Installation and disassembly; A plurality of filter discs 8 are provided on both sides of the dual-axis motor 4, and the filter discs 8 slide in the air duct 2; A penetrating rotating shaft 9 is installed on the side of the filter disc 8, and rotating gears 10 are installed at both ends of the rotating shaft 9, and a rotating cleaning component is installed on the rotating gear 10, and the rotating cleaning component is used to improve the smoothness of the gas when passing through the filter disc 8; A locking distance regulating mechanism is provided on the air duct 2, and the locking distance regulating mechanism is used to adjust the distance between the filter disc 8 and the impeller 7; The locking distance control mechanism includes a plurality of distance-adjusting sliders 11 mounted on the side wall of the filter disc 8; the inner side wall of the air duct 2 is provided with distance-adjusting slide grooves 12 extending to the edge thereof, and the distance-adjusting slide grooves 12 are slidably matched with the distance-adjusting sliders 11; the distance-adjusting slider 11 is provided with a plurality of distance-adjusting plug holes 13 on the side away from the filter disc 8; a guide slide column 14 is fixedly mounted on the outer side wall of the air duct 2, and a guide slide column 15 is slidably connected to the guide slide column 14, and a pull ring is provided on the guide slide column 15; the guide slide column 1 4 is sleeved with a guide spring 16, one end of the guide spring 16 is connected to a guide limit plate 17, and the other end is fixedly connected to the guide slider 15, and two symmetrical guide square seats 18 are installed on the side of the guide slider 15, and a clamping noise elimination unit is arranged on the guide square seat 18; the side of the guide slider 15 close to the air duct 2 is connected to a distance adjustment plug block 19, and the distance adjustment plug block 19 passes through the air duct 2 and is connected to one of the distance adjustment holes 13; the guide limit plate 17 is fixedly connected to the end of the guide slide column 14 away from the air duct 2; When the air duct 2 is ventilating the working area, the circulating air will pass through the filter disc 8 to intercept impurities such as tiny suspended particles or coal dust mixed in the transported air to avoid affecting the quality of the transported air; and the filter disc 8 is installed in a multi-layer manner on the left and right sides of the dual-axis motor 4, so that when the device is ventilated, whether it is air intake or air outlet, it can prevent impurities in the air from entering the vicinity of the dual-axis motor 4 and affecting its working state, and prevent the dual-axis motor 4 from adhering too many impurities to affect the heat dissipation effect, and the gas will also contact the dual-axis motor 4 when circulating to reduce the heat generated by it during use; and the number of filter discs 8 set on one side is a plurality, which can filter in multiple stages, and filter impurities of different particle sizes and properties more comprehensively, reducing the intensity of a single filter disc 8 when in use, and each filter disc 8 can share a part of the impurity interception task, thereby improving the service life of the filter disc 8, so that the ventilation effect and efficiency of the device are improved; The pull ring can also be pulled outward to make the guide slider 15 on it move within the upper limit of the guide slide column 14, so that the guide spring 16 is in a buffering state, and then the distance-adjusting plug 19 on the guide slider 15 is separated from the air duct 2 and is no longer connected to the distance-adjusting plug hole 13, thereby releasing the limit setting of the filter circular plate 8. At this time, by pushing the filter circular plate 8, it is limited and slides in the air duct 2 and the distance-adjusting slide groove 12 through the distance-adjusting slider 11, so that the distance between the filter circular plate 8 and the impeller 7 can be controlled, so that the distance between the two can be adjusted to a suitable position for use according to actual use conditions; when the position of the filter circular plate 8 is adjusted, by loosening the guide slider 15, the reset of the guide spring 16 drives the distance-adjusting plug 19 to reset and move, so that it passes through the air duct 2 and contacts one of the distance-adjusting slide grooves 12, so that the filter circular plate 8 can be fixed in the current position for use, avoiding the movement of the filter circular plate 8 due to non-human factors during use, reducing the limitations of the device during use, and the filter circular plate 8 is moved by the distance-adjusting slider 11 in the air duct 2. The filter disc 8 is slidably displaced in the pitch-adjusting slot 12, and a plurality of pitch-adjusting jacks 13 are provided on the pitch-adjusting slider 11, so that the filter disc 8 can be fixed in the current position after adjusting its position in the air duct 2, so that the spacing between the filter disc 8 and the impeller 7 can be adjusted, and the position of the filter disc 8 can be adjusted without the aid of any tools, which makes it possible for the device to conveniently adjust the use and installation position of the filter disc 8 according to the actual airflow conditions, thereby avoiding the instability of the airflow caused by the inappropriate spacing between the impeller 7 and the filter disc 8, and avoiding the complexity of the movement trajectory of impurities in the airflow caused by the instability of the airflow, so that the impurities can be effectively intercepted by the filter disc 8, thereby improving the filtering effect and efficiency of the filter disc 8; at the same time, it avoids the uneven force on the filter disc 8, so that different areas of the surface of the filter disc 8 are subjected to different airflow impact intensities, thereby avoiding the inconsistent degree of wear of the filter disc 8 during use, resulting in aggravated wear in local areas, and improving the service life of the filter disc 8, thereby reducing the limitations of the device during use; The above operation can not only control the distance between the impeller 7 and the filter disc 8, but also adjust the distance between the two filter discs 8 so that they can be used in a suitable position, avoid the distance between the impeller 7 and the filter disc 8 or multiple filter discs 8 being too large, which may easily cause eddy currents and turbulence, and avoid the formation of irregular flow patterns in the space when the airflow is not sufficiently constrained, resulting in random changes in the airflow speed and direction; at the same time, when the impeller 7 and the blown airflow reach the filter disc 8, avoid being affected by the surrounding environmental factors (such as obstruction by other objects in the room or interference by other airflows) on the way due to the distance being too far, so that the airflow cannot reach the filter plate evenly and stably, but has a situation where the local flow rate is fast and the local flow rate is slow; at the same time, avoid the airflow being strongly squeezed due to the small spacing, resulting in uneven and unstable airflow speed distribution, and at the same time, the too small spacing will also make the airflow generated by the rotation of the impeller 7 subject to a large reaction of the filter plate, and the airflow will be reflected and collided back and forth in a small space, so as to avoid aggravating the turbulence of the airflow, avoid the pressure and speed fluctuations of the airflow being obvious, which makes it difficult to maintain stability, and improve the ventilation effect of the device.

[0019] The retaining connection device of this embodiment includes a retaining circular groove 20 arranged at one end of the retaining cylinder 6 close to the dual-axis motor 4, and the hollow round block 5 is located in the retaining circular groove 20 and the two are slidably matched; the opposite sides of the inner side wall of the retaining circular groove 20 are provided with a plurality of straight and equidistantly arranged retaining inclined grooves 21, and the inclined surfaces of the retaining inclined grooves 21 face the dual-axis motor 4; a closed partition is installed at the inner center of the hollow round block 5, and a resistance slide cylinder 22 is installed on the opposite sides of the closed partition, and a resistance slide column 23 is slidably connected to the resistance slide cylinder 22; a resistance spring 24 is provided inside the resistance slide cylinder 22, and one end of the resistance spring 24 is connected to the resistance slide cylinder 2 2, and the other end is fixedly connected to the end point of the resistance slide column 23 located in the resistance slide cylinder 22; the opposite ends of the two resistance slide columns 23 are both installed with a retaining inclined block 25, and the inclined surface on the retaining inclined block 25 is in an outward eight shape; the inclined surfaces of the two retaining inclined blocks 25 face each other, and the retaining inclined blocks 25 fit with the retaining inclined groove 21; the outer wall of the hollow circular block 5 is also provided with a resistance slide groove 26 connected to the inside thereof, and the resistance slide groove 26 and the retaining inclined block 25 are slidably matched, and the initial position of the inclined surface of the retaining inclined block 25 is located at the outer wall of the hollow circular block 5, and the outer wall of the hollow circular block 5 fits the inner wall of the retaining circular groove 20; When the device, that is, the ventilation main body 1, is used to ventilate the working area during coal mine operation, since the components used for ventilation are integrated in the air duct 2, and the air duct 2 is connected to the ventilation main body 1 through a flange, it is only necessary to install the air duct 2 in the area to be ventilated during use, which is convenient for the staff to maintain and adjust the device, avoiding the need to go to great lengths to perform construction on the main body during maintenance operations, thereby reducing the limitations of the device during use; or the air duct 2 can be used as a wind tube for ventilation in a local area to promote air flow in the local area to improve the ventilation effect, thereby providing additional power for the flow of air, and avoiding the large pressure loss caused by friction, resistance and other factors during the flow of air during long-distance ventilation, resulting in poor ventilation effect at the end, thereby further improving the ventilation effect of the device, enhancing air flow, and ensuring that sufficient air volume reaches the target area; When it is necessary to use the air duct for ventilation, the double-shaft motor 4 is started so that its output end drives the hollow round block 5 to rotate, and the retaining cylinder 6 is installed on the hollow round block 5, so that the rotating hollow round block 5 drives the impeller 7 on the retaining cylinder 6 to rotate, so that ventilation operation can be carried out, so that fresh air can be continuously supplied during coal mine operation, and harmful gases in the operation area can be extracted at the same time; and the number of impellers 7 is two and they are respectively installed at the two relative output ends of the double-shaft motor 4, so that both ends of the double-shaft motor 4 have impellers 7 to rotate, which is equivalent to having two power sources to promote air flow at the same time, which can generate a larger ventilation volume and a stronger wind pressure, and more effectively drive the air to flow in the pipe or space, avoiding the pipe being too long and resulting in insufficient ventilation intensity, making it difficult for the air to circulate normally; and in the double-shaft In the ventilation system of the motor 4, if one of the impellers 7 fails, the other can still continue to work, so that the ventilation system will not be completely paralyzed, thereby improving the reliability and stability of the entire ventilation system and further improving the use effect of the device. The two opposing impellers 7 can cooperate with each other in design, so that the airflow can cooperate with each other during the flow process to avoid airflow interference and conflict. The two impellers 7 working together can produce a more stable wind pressure. During the ventilation process, even if the resistance of the ventilation duct changes or other interference factors are encountered, the dual-axis impeller system can better maintain the stability of the wind pressure and ensure that the air can flow continuously and stably, thereby ensuring the reliability of the ventilation effect, reducing the limitations of the device during use, and improving the ventilation effect and efficiency of the device; At the same time, the device also needs to select a matching impeller 7 according to the working area, scene, and ventilation requirements. Different ventilation effects will be achieved depending on the shape, size, angle, and material of the impeller blades. At this time, the impeller 7 currently in use needs to be removed from the output end of the dual-axis motor 4. At this time, it is only necessary to pull the impeller 7 in the direction away from the dual-axis motor 4, which will cause a pulling force on the retaining cylinder 6. At this time, one of the retaining bevels 21 is fitted and connected to the retaining bevel block 25, but because a pulling force is caused on the retaining cylinder 6, the retaining bevel 21 at the retaining circular groove 20 inside it moves away from the dual-axis motor 4, so that the retaining bevel 21 applies a force to the inclined surface of the retaining bevel block 25, causing it to move in a limited position at the resistance slide groove 26. The movement causes the retaining bevel block 25 to move in a limited position in the resistance slide cylinder 22 through the resistance slide column 23, so that the resistance spring 24 is in a buffering position. The state makes the retaining inclined block 25 gradually move down and enter the inside of the hollow circular block 5, so that the retaining inclined block 25 no longer contacts the resistance sliding groove 26, and the limiting setting of the retaining cylinder 6 is released, so that the hollow circular block 5 moves within the limiting position in the retaining circular groove 20, so that it can be pulled away from the dual-axis motor 4 until it is disconnected from the hollow circular block 5, so that it is no longer located in the retaining circular groove 20, so that the impeller 7 can be removed from the output end of the dual-axis motor 4, and the disassembly operation of the impeller 7 is completed; when the staff selects the matching impeller required for this ventilation operation, by facing the opening of the retaining cylinder 6 on the impeller 7, that is, the retaining circular groove 20, the hollow circular block 5 installed on the output end of the dual-axis motor 4, by pushing the retaining cylinder 6 to move in the direction of the dual-axis motor 4, the hollow circular block 5 on the output end is gradually moved into the retaining circular groove 20 of the retaining cylinder 6;Since the outer wall of the hollow circular block 5 fits with the inner wall of the retaining circular groove 20, and the initial position of the inclined surface of the retaining inclined block 25 is located at the outer wall of the hollow circular block 5, the inclined surface of the retaining inclined block 25 will contact the inner wall edge of the retaining circular groove 20, which will cause downward pressure on the retaining inclined block 25, so that it can be limited and moved at the resistance slide groove 26. At the same time, the retaining inclined block 25 can be limited and moved in the resistance slide cylinder 22 through the resistance slide column 23, so that the resistance spring 24 is in a buffering state, so that the retaining inclined block 25 is pressed down to the hollow circular block 5. The hollow round block 5 is inside the retaining circular groove 20, so that the retaining inclined block 25 at the hollow round block 5 is moved to the retaining inclined groove 21 at the inner wall of the retaining circular groove 20, so that the retaining inclined block 25 has displacement space and is no longer restricted, so that the resistance spring 24 is no longer restricted and the reset caused by the reset drive the retaining inclined block 25 to reset and move, so that it will reset to the retaining inclined groove 21. Since the retaining inclined groove 21 and the retaining inclined block 25 fit together, the retaining cylinder 6 on the retaining circular groove 20 can be limited to the current position, so that The impeller 7 on the retaining cylinder 6 is installed on the hollow round block 5 at the output end of the dual-axis motor 4, so that the dual-axis motor 4 drives the hollow round block 5 to rotate when working, so that the right-angled surface of the retaining inclined block 25 on the hollow round block 5 is against the right angle of the retaining inclined slot 21, so as to drive the retaining cylinder 6 to rotate, so that the retaining cylinder 6 can drive the impeller 7 to rotate for ventilation operation, thereby completing the installation operation of the impeller 7, so that the staff can use different types of impellers 7 according to different working conditions, and the installation and removal operations of the impeller 7 are convenient and fast, and can be completed without the help of any tools. The staff only needs to lift the impeller 7 with one hand to push it to install it on the dual-axis motor 4, which reduces the limitations of the device during use and improves the ventilation effect of the device; and the number of the retaining inclined slots 21 is several, so that the impeller 7 can be installed at different positions from the dual-axis motor 4, so that the two can have a good spacing according to different usage scenarios to avoid the narrow air duct caused by inappropriate spacing, which affects the air flow rate and stability, and reduces the limitations of the device during use. ;

[0020] The rotary cleaning component of this embodiment includes one end of an auxiliary rotating shaft 27 installed on the pitch-adjusting slider 11, and a plurality of blades 28 are installed on the other end of the auxiliary rotating shaft 27, and the side of the blade 28 is located in the airflow path; the auxiliary rotating shaft 27 is arranged parallel to the filter disc 8; an auxiliary helical gear 29 is installed on the auxiliary rotating shaft 27, and the auxiliary helical gear 29 is meshed and connected with a linkage helical gear 30, and the linkage helical gear 30 is installed on the rotating rotating shaft 9; both sides of the filter disc 8 are provided with a fixing track 31, and a fixing slide 32 is slidably connected to the fixing track 31, and the fixing slide 32 is fixedly installed on the pitch-adjusting slider 11; the fixing track 31 is coaxial with the center of the filter disc 8; a fixing toothed ring 33 is installed on the fixing track 31, and the fixing toothed ring 33 is meshed and connected with the rotating gear 10; a scraper 34 is installed on the fixing toothed ring 33, and the scraper 34 contacts the side of the filter disc 8; When the dual-shaft motor 4 drives the impeller 7 to rotate, the airflow generated will contact the side surfaces of several blades 28 when flowing in the air duct 2, which will cause thrust to the side surfaces of the blades 28, so that the auxiliary shaft 27 on the blades 28 will rotate continuously, and then the auxiliary helical gear 29 on the auxiliary shaft 27 will drive the meshing linkage helical gear 30 to rotate when rotating, so that the rotating shaft 9 on the shaft will rotate on the filter disc 8, and then the rotating gears 10 at both ends of the rotating shaft 9 will rotate and rotate due to the meshing retaining gear ring 33, so that the retaining slide seat 32 will rotate at the upper limit, and then the scraper 34 on the retaining gear ring 33 will rotate on the filter disc 8. The scraper 34 rotates on the filter disc 8 as the center, so that the impurities intercepted on the filter disc 8 are cleaned while avoiding dead corners during cleaning, so as to avoid impurities mixed in the air being intercepted on the filter disc 8 and concentrated therein to affect the flow rate and flow velocity of the gas, thereby improving the ventilation effect and efficiency of the device. At the same time, the scraper 34 can be set as a hollow structure and equipped with a suction device, so that the impurities adhered to the filter disc 8 can be cleaned and recovered at the same time, avoiding excessive accumulation of impurities in front of the filter disc 8 to affect the ventilation efficiency, thereby reducing the limitations of the device during use.

[0021] The clamping noise elimination unit of the present embodiment includes two displacement screw rods 35, and the two displacement screw rods 35 are symmetrically installed on both sides of the air duct 2; a displacement block 36 is threadedly connected to the displacement screw rod 35, and two displacement cylinders 37 are symmetrically slidably connected to the displacement block 36, and the displacement cylinder 37 is fixedly installed on the outer wall of the air duct 2; a group of bending square columns 38 are respectively installed on both sides of the displacement block 36, and a displacement cross plate 39 is installed at the end point of each group of bending square columns 38 located in the air duct 2; the bending square columns 38 are slidably matched with the air duct 2; an elastic round rod 40 is installed on the side of the displacement cross plate 39 close to the dual-axis motor 4, and an energy-absorbing square plate 41 is installed on the elastic round rod 40, and a rubber pad 42 is provided on the energy-absorbing square plate 41, and the dual-axis motor 4 is located at the moving path of the rubber pad 42; symmetrical fixed pulleys 43 are installed on both sides of the air duct 2; the clamping noise reduction unit also includes a cable 44, one end of the cable 44 is connected to the guide square seat 18, and the other end is wound around the fixed pulley 43 and connected to a winding roller 45, and a driving shaft 46 is installed on the winding roller 45, and a driving base 47 is installed on the driving shaft 46, and the driving base 47 is installed on the air duct 2; one end of the driving shaft 46 is connected to a spring 48, and the end point of the spring 48 is connected to the driving base 47; the other end of the driving shaft 46 is installed with a driving bevel gear 49; the displacement screw 35 is connected to a displacement bevel gear 50, and the displacement bevel gear 50 is meshed with the driving bevel gear 49; When the staff adjusts the position of the filter disc 8 to control the distance between it and the impeller 7, they need to pull the guide slider 15; when the guide slider 15 moves, it will drive the guide square seat 18 to move, so that under the action of the cable 44 and the fixed pulley 43, the winding roller 45 will rotate, so that it will drive the driving bevel gear 49 to rotate through the driving shaft 46, so that the spring spring 48 is in a buffering state, so that the driving bevel gear 49 will drive the meshing displacement bevel gear 50 to rotate when it rotates, so that the displacement screw 35 on it rotates on the air duct 2, so that the threaded displacement block 36 moves to the upper limit of the displacement cylinder 37 and moves away from the air duct 2, so that the two displacement blocks 36 move in opposite directions; when the completion After adjusting the position of the filter disc 8, the guide slider 15 is loosened, so that the guide seat 18 is reset and moved, so that the winding roller 45 is no longer subjected to tension and the winding roller 45 is reset and rotated by the reset of the spring spring 48, and the cable 44 is wound and connected, so that the displacement screw 35 is reset and rotated under the action of the driving bevel gear 49 and the displacement bevel gear 50, so that the threaded displacement block 36 is reset and moved on the displacement cylinder 37, so that the two displacement blocks 36 move relative to each other; when the two displacement blocks 36 move back to back, it means that the position of the filter disc 8 is being adjusted, so that the displacement block 36 drives the displacement cross plate 39 away from the double axis under the action of the bending square column 38. The side of the motor 4 makes the displacement cross plate 39 through the elastic round rod 40 so that the rubber pad 42 on the energy absorbing square plate 41 no longer contacts the side of the dual-axis motor 4, so that the rubber pads 42 on both sides of the dual-axis motor 4 no longer contact each other, thereby releasing the limit setting of the dual-axis motor 4, so that the energy absorbing square plates 41 on both sides no longer clamp the dual-axis motor 4, which is convenient for the staff to adjust the installation position and maintenance operation of the dual-axis motor 4; when the two displacement blocks 36 move relative to each other, it means that the position adjustment operation of the filter circular plate 8 is completed, so that the displacement block 36 drives the displacement cross plate 39 to move close to the dual-axis motor 4 under the action of the bending square column 38, so that the displacement cross plate 39 is driven by the elastic round rod 40 The energy absorbing square plate 41 contacts the side of the dual-axis motor 4, so that the energy absorbing square plates 41 on both sides are in contact with the dual-axis motor 4, so that the dual-axis motor 4 can be fixedly clamped in the current position, avoiding the dual-axis motor 4 from being dislocated or shaking due to non-human factors when the dual-axis motor 4 drives the impeller 7 to rotate to generate airflow, thereby improving the stability of the dual-axis motor 4 during use and improving the ventilation effect of the device; at the same time, when the energy absorbing square plate 41 contacts the side of the dual-axis motor 4, the rubber pad 42 on the energy absorbing square plate 41 will also contact the dual-axis motor 4, thereby strengthening the friction between the dual-axis motor 4 and the energy absorbing square plate 41, and avoiding the dislocation caused by shaking of the dual-axis motor 4 during use;At the same time, the buffering force brought by the elastic round rod 40 can also reduce the impact force caused by the shaking of the dual-axis motor 4 during use, thereby improving the safety of the device during use, and improving the mute effect of the device during use, isolating the rigid connection between the dual-axis motor 4 and the surrounding structure, reducing the transmission of vibration, avoiding the noise caused by the shaking of the dual-axis motor 4 during use, and reducing the limitations of the device during use. ;

[0022] The present invention also provides a coal mine operation ventilation method, comprising the following steps: S1, start the dual-axis motor 4 so that its opposite output ends respectively drive the two retaining cylinders 6 to rotate through the retaining connection devices; S2. When the two retaining cylinders 6 rotate, they will drive the impellers 7 at the opposite ends to rotate, so as to generate airflow in the air duct 2 for ventilation operation; S3, when the airflow flows in the air duct 2, the filter disc 8 is provided to intercept the impurities such as tiny suspended particles or coal dust contained in the air; S4. Operate the rotary cleaning assembly to clean the impurities intercepted on the filter disc 8 to avoid excessive accumulation and blockage that affects the normal passage of airflow.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ventilation device for coal mine operation, comprising a ventilation body (1); characterized in that: The side of the ventilation body (1) is butt-jointed with an air duct (2) via a flange, a retaining bracket (3) is installed in the air duct (2), a dual-axis motor (4) is installed on the retaining bracket (3), two opposite output ends of the dual-axis motor (4) are respectively installed with hollow round blocks (5), and a retaining connection device is provided on the hollow round blocks (5); retaining cylinders (6) are provided on both sides of the retaining bracket (3), and impellers (7) are respectively installed at the opposite ends of the two retaining cylinders (6); the retaining connection device is used to install and remove the impeller (7) at the output end of the dual-axis motor (4). unloading; a plurality of filter discs (8) are provided on both sides of the dual-axis motor (4), and the filter discs (8) slide in the air duct (2); a penetrating rotating shaft (9) is installed on the side of the filter disc (8), and rotating gears (10) are installed on both ends of the rotating shaft (9), and a rotating cleaning component is installed on the rotating gear (10), and the rotating cleaning component is used to improve the smoothness of gas when passing through the filter disc (8); a locking distance control mechanism is provided on the air duct (2), and the locking distance control mechanism is used to adjust the distance between the filter disc (8) and the impeller (7).

2. A coal mine operation ventilation device according to claim 1, characterized in that: The locking distance control mechanism comprises a plurality of distance adjustment sliders (11) mounted on the side wall of the filter disc (8); distance adjustment slide grooves (12) extending to the edge of the inner side wall of the air duct (2) are provided on both sides thereof, and the distance adjustment slide grooves (12) are slidably engaged with the distance adjustment sliders (11); and a plurality of distance adjustment sockets (13) are provided on a side of the distance adjustment slider (11) away from the filter disc (8).

3. A coal mine operation ventilation device according to claim 2, characterized in that: A guide slide post (14) is fixedly mounted on the outer wall of the air duct (2), a guide slider (15) is slidably connected to the guide slide post (14), and a pull ring is provided on the guide slider (15); a guide spring (16) is sleeved on the guide slide post (14), one end of the guide spring (16) is connected to a guide limit plate (17), and the other end is fixedly connected to the guide slider (15); two symmetrical guide square seats (18) are mounted on the side of the guide slider (15), and a clamping noise elimination unit is provided on the guide square seat (18); a distance adjustment plug (19) is connected to the side of the guide slider (15) close to the air duct (2), and the distance adjustment plug (19) passes through the air duct (2) and is connected to one of the distance adjustment holes (13); the guide limit plate (17) is fixedly connected to the end of the guide slide post (14) away from the air duct (2).

4. A coal mine operation ventilation device according to claim 1, characterized in that: The retaining connection device comprises a retaining circular groove (20) arranged at one end of the retaining cylinder (6) close to the dual-axis motor (4), the hollow round block (5) is located in the retaining circular groove (20) and the two are slidably matched; the opposite sides of the inner side wall of the retaining circular groove (20) are provided with a plurality of straight and equidistantly arranged retaining inclined grooves (21), and the inclined surfaces of the retaining inclined grooves (21) face the dual-axis motor (4); a closed partition is installed at the inner center of the hollow round block (5), and a resistance slide cylinder (22) is installed on the opposite sides of the closed partition, and a resistance slide column (23) is slidably connected inside the resistance slide cylinder (22); a resistance spring (24) is provided inside the resistance slide cylinder (22), one end of the resistance spring (24) is fixedly connected to the inner bottom surface of the resistance slide cylinder (22), and the other end is fixedly connected to the end point of the resistance slide column (23) located inside the resistance slide cylinder (22).

5. A coal mine operation ventilation device according to claim 4, characterized in that: The two opposing ends of the two resistance slide columns (23) are both provided with retaining inclined blocks (25), and the inclined surfaces on the retaining inclined blocks (25) are in an outward-facing eight shape; the inclined surfaces of the two retaining inclined blocks (25) face opposite to each other, and the retaining inclined blocks (25) fit in with the retaining inclined groove (21); the outer wall of the hollow circular block (5) is also provided with a resistance slide groove (26) connected to the interior thereof, and the resistance slide groove (26) and the retaining inclined blocks (25) are slidably matched, and the initial position of the inclined surface of the retaining inclined block (25) is located at the outer wall of the hollow circular block (5), and the outer wall of the hollow circular block (5) fits in with the inner wall of the retaining circular groove (20).

6. A coal mine operation ventilation device according to claim 3, characterized in that: The rotary dirt cleaning component comprises one end of an auxiliary rotating shaft (27) mounted on the pitch-adjusting slider (11); a plurality of blades (28) are mounted on the other end of the auxiliary rotating shaft (27); the side surfaces of the blades (28) are located at the airflow path; the auxiliary rotating shaft (27) is arranged parallel to the filter disc (8); an auxiliary helical gear (29) is mounted on the auxiliary rotating shaft (27); the auxiliary helical gear (29) is meshingly connected with a linkage helical gear (30); and the linkage helical gear (30) is mounted on the rotary rotating shaft (9).

7. A coal mine operation ventilation device according to claim 6, characterized in that: Both sides of the filter circular plate (8) are provided with retaining rails (31), and a retaining slide (32) is slidably connected to the retaining rails (31), and the retaining slide (32) is fixedly mounted on the distance-adjusting slide block (11); the retaining rails (31) are coaxial with the center of the filter circular plate (8); a retaining toothed ring (33) is mounted on the retaining rails (31), and the retaining toothed ring (33) is meshingly connected to the rotating gear (10); a scraper (34) is mounted on the retaining toothed ring (33), and the scraper (34) contacts the side surface of the filter circular plate (8).

8. A coal mine operation ventilation device according to claim 3, characterized in that: The clamping noise elimination unit comprises two displacement screw rods (35), the two displacement screw rods (35) are symmetrically mounted on both sides of the air duct (2); a displacement block (36) is threadedly connected to the displacement screw rod (35), two displacement cylinders (37) are symmetrically slidably connected to the displacement block (36), and the displacement cylinders (37) are fixedly mounted on the outer wall of the air duct (2); a group of bending square columns (38) are respectively mounted on both sides of the displacement block (36), and a displacement cross plate (39) is mounted at the end point of each group of bending square columns (38) located in the air duct (2); the bending square columns (38) are slidably matched with the air duct (2); an elastic round rod (40) is mounted on the side of the displacement cross plate (39) close to the dual-axis motor (4), an energy-absorbing square plate (41) is mounted on the elastic round rod (40), and a rubber pad (42) is arranged on the energy-absorbing square plate (41), and the side of the dual-axis motor (4) is located at the moving path of the rubber pad (42).

9. A coal mine operation ventilation device according to claim 8, characterized in that: Symmetrical fixed pulleys (43) are installed on both sides of the air duct (2); the clamping noise elimination unit also includes a cable (44), one end of the cable (44) is connected to the guide square seat (18), and the other end of the cable (44) is wound around the fixed pulley (43) and connected to a winding roller (45), a driving shaft (46) is installed on the winding roller (45), a driving base (47) is installed on the driving shaft (46), and the driving base (47) is installed on the air duct (2); one end of the driving shaft (46) is connected to a spring (48), and the end point of the spring (48) is connected to the driving base (47); the other end of the driving shaft (46) is installed to a driving bevel gear (49); the displacement screw (35) is connected to a displacement bevel gear (50), and the displacement bevel gear (50) is meshingly connected with the driving bevel gear (49).

10. A coal mine operation ventilation method, using the coal mine operation ventilation device according to claim 1, characterized in that: Includes steps: S1, starting the dual-axis motor (4) so ​​that its opposite output ends respectively drive the two retaining cylinders (6) to rotate through the retaining connection devices; S2. When the two retaining cylinders (6) rotate, they both drive the impellers (7) at the opposite ends to rotate, so as to generate airflow in the air duct (2) for ventilation operation; S3, when the airflow flows in the air duct (2), the filter disc (8) is provided to intercept impurities such as tiny suspended particles or coal dust contained in the air; S4. Operate the rotary cleaning assembly to clean the impurities intercepted on the filter disc (8) to avoid excessive accumulation and blockage that affects the normal passage of airflow.

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