Coal mine underground ventilation adjusting device

Abstract

The invention discloses a coal mine underground ventilation adjusting device, and relates to the technical field of coal mine ventilation, the coal mine underground ventilation adjusting device comprises a ventilation assembly, the ventilation assembly is used for maintaining air circulation in a mine, the bottom of the ventilation assembly is fixedly provided with a fixed seat and two supporting seats, and the two supporting seats are fixedly arranged on the fixed seat. The two supporting seats are symmetrically arranged with the fixing seat as the center. According to the underground coal mine ventilation adjusting device, the air guide assembly is started by a worker, air outside the flared pipe is conveyed into the air guide pipe through rotation of the air guide assembly, and at the moment, the air is conveyed into the flow dividing guide pipe along the air guide pipe; when air is guided, the multi-head air pipe can be flexibly arranged according to the distribution position of a coal mine tunnel, the air volume is adjusted through the air valves on the diversion guide pipes, the ventilation requirements of different spaces are met, for example, when a tunneling face is excavated, ventilation needs to be locally enhanced to discharge gas; when the production of the stope is stopped, the air volume can be properly reduced to save energy.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine ventilation, in particular to a ventilation regulating device for an underground coal mine. Background Art

[0002] Coal mines are areas where humans extract coal resources in coal-rich mining areas. They are generally divided into underground coal mines and open-pit coal mines. When coal seams are far from the surface, tunnels are typically excavated underground, which is called an underground coal mine. When coal seams are very close to the surface, coal is typically extracted by directly removing the surface soil layer, which is called an open-pit coal mine. The vast majority of coal mines in China are underground coal mines. Coal mines encompass large areas above and below ground, including related facilities. Coal mines typically include tunnels, shafts, and mining faces. Coal is the primary solid fuel and a type of combustible organic rock. It is formed by the natural coalification process over a long period of time, when lush vegetation grows over a certain geological period. In a suitable geological environment, it gradually accumulates into thick layers and is buried under water or mud.

[0003] Currently, existing coal mine tunnels are distributed in a network pattern, extending and branching as mining progresses. Air volume and pressure requirements vary significantly across different areas, such as the heading face, stope face, and chambers. Traditional ventilation systems rely on manual adjustment of dampers and windows, or control of air volume by starting and stopping fans. This leads to lag and low precision. Traditional ventilation methods have a relatively simple duct system, making it difficult to adapt to changes in the tunnel in real time, potentially resulting in insufficient or excessive air volume in some areas. Summary of the Invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A ventilation and adjustment device for an underground coal mine, comprising: a ventilation assembly, the ventilation assembly being used to maintain air circulation inside the mine, a fixing seat and a support seat being fixedly mounted on the bottom of the ventilation assembly, two support seats being provided, and the two support seats being symmetrically arranged with the fixing seat as the center; An air guide assembly, which is used to adjust the wind force in the ventilation assembly and is fixedly installed inside the ventilation assembly; A filter assembly is used for dust-proof air transportation in the ventilation assembly. The filter assembly is fixedly installed inside the ventilation assembly at one end away from the air guide assembly. Two filter assemblies are provided, and the two filter assemblies are symmetrically arranged with the air guide assembly as the center; Docking assembly, which is used for stable connection between ventilation ducts, is provided with two groups of docking assemblies, and both groups of docking assemblies are sleeved on the outer surface of the ventilation assembly. The staff installs the ventilation assembly in the mine according to the distribution of the coal mine tunnels, and then the staff starts the air guide assembly, so that the air guide assembly rotates in the ventilation assembly, extracts the air outside the ventilation assembly, and transports the air along the ventilation assembly to the side of the filter assembly. The air filtered by the filter assembly is transported to the staff's working area to ensure the work needs of the personnel inside the coal mine. When it is necessary to assemble and extend the ventilation duct, the staff will connect the docking assembly sleeved on the outside of the ventilation assembly with the docked ventilation duct to prevent the mining face from continuously extending to deeper or farther places as the mine mining work progresses, and the original ventilation duct length cannot cover the new working area.

[0005] Preferably, the ventilation assembly includes a diversion duct, an air guide pipe is fixedly installed on one side of the outer surface of the diversion duct, a connecting ring is fixedly installed on the outer surface of the air guide pipe, a flaring pipe is fixedly installed on the outer surface of the connecting ring, a mounting pipe is fixedly installed on the surface of the diversion duct away from the air guide pipe, the air guide pipe is fixedly installed on the top of the fixing seat, the air guide pipe and the flaring pipe are sleeved on the outer surface of the air guide assembly, two mounting pipes are provided, and the two mounting pipes are symmetrically arranged with the air guide pipe as the center, the mounting pipe is fixedly installed on the top of the support seat, and the mounting pipe is sleeved on the outer surface of the filter assembly. The staff starts the air guide component and rotates the air guide component to transport the air outside the expanded tube into the air guide duct. At this time, the air is transported along the air guide duct to the diversion duct. Since the diversion duct is provided with multiple air outlets, the multi-head air duct can be flexibly arranged according to the distribution position of the coal mine tunnel when guiding the air. The air volume is adjusted by the air valve on the diversion duct to meet the ventilation needs of different spaces. For example, when the heading face is excavated, local ventilation needs to be strengthened to discharge gas; when the mining face is shut down, the air volume can be appropriately reduced to save energy.

[0006] Preferably, the air guide assembly includes a mounting bracket, the mounting bracket being fixedly mounted inside the air guide duct, a motor being fixedly mounted on the top of the mounting bracket, a rotating shaft being rotatably mounted on the output end of the motor, an air regulator being rotatably mounted on the outer surface of the rotating shaft, and the air regulator being rotatably mounted inside the flared tube. A worker installs the motor inside the air guide duct via the mounting bracket. When the worker works inside the mine, the motor is started, causing the motor output end to drive the rotating shaft and the air regulator to rotate. The air regulator then rotates inside the flared tube, conveying air outside the flared tube into the air guide duct, thereby maintaining air circulation inside the mine.

[0007] Preferably, the air regulating member includes a central shaft, a collar is provided on the outer surface of the central shaft, a fan blade is fixedly mounted on the outer surface of the collar, and an inclined blade is fixedly mounted on the outer surface of the central shaft away from the collar. Six inclined blades are provided and are distributed in a circular pattern on the outer surface of the central shaft. A staff member starts the motor so that the motor output end drives the central shaft, collar, fan blade, and inclined blade to rotate, thereby conveying air outside the flared pipe into the air guide duct. The staff member adjusts the wind force by adjusting the rotation speed of the inclined blade and fan blade. When the mining face is shut down, the air output can be reduced to avoid full-load operation of the fan.

[0008] Preferably, the central shaft is rotatably mounted on the outer surface of the rotating shaft, the fan blades are rotatably mounted inside the connecting ring via a collar, and the inclined blades are adapted to the inner wall of the flared tube. The sides of the inclined blades are configured as triangular structures. When the central shaft rotates, the inclined blades rotate with the central shaft to block gravel, thereby preventing gravel from entering the ventilation assembly and damaging the fan blades during rotation.

[0009] Preferably, the filter assembly includes a connecting ring, and diverter pieces are fixedly installed on both sides of the outer surface of the connecting ring. A filter cover is fixedly installed at the connection between the diverter piece and the connecting ring. Filter holes are opened on the surface of the filter cover. There are two filter covers. A flow cavity is formed between the two filter covers and the connecting ring. The diverter piece is fixedly installed inside the diversion duct. The filter cover is set to a flexible material, and the filter holes are set corresponding to the diverter piece.

[0010] When air is transported into the diversion duct along the air duct, the diversion pieces and filter covers installed at both ends of the diversion duct filter the dust in the air. When the air flows along the diversion duct, the air blows the filter cover. Since the two filter covers are made of flexible materials, the air blowing causes the filter covers to be deformed in the circulation cavity. At this time, the two filter covers bulge in the direction of the air blowing to form an arc shape, and the air is discharged outward along the filter holes opened on the surface of the filter cover. Through the setting of the double-layer filter cover, the time the air stays in the circulation cavity is increased to filter the dust in the air. After filtering the dust, the filter cover made of flexible material will shake when blown by air to clean the filtered dust and avoid clogging of the filter holes.

[0011] Preferably, the diverter comprises a circular ring, with a plurality of separators fixedly mounted on the outer surface of the circular ring. The separators are arranged in a circular pattern around the surface of the circular ring, and a snap ring is sleeved on the outer surface of the separators, with a circular arc cover fixedly mounted on the outer surface of the snap ring. The separators reinforce the circular ring, and air passes through the separators, contacts the filter cover, and blows against the filter cover, causing the filter cover to vibrate in the direction of air flow. Since the filter cover is made of a flexible material, friction occurs between the separators and the circular ring during the shaking process, facilitating the removal of dust adhering to the filter cover.

[0012] Preferably, the arc cover is fixedly mounted on the inner wall of the diversion conduit, the surface of the arc cover away from the clamping ring is fixedly connected to the filter cover, and the filter cover is extruded and fitted with the ring.

[0013] Preferably, the docking assembly includes a sleeve ring, which is sleeved on the outer surface of the mounting tube, and a positioning card is provided on the outer surface of the sleeve ring, and the positioning card is fixedly installed on the outer side of the mounting tube. A docking ring is provided on the outer side of the positioning card, and a slot is provided inside the docking ring. The surfaces of the docking ring and the slot are fixedly installed with a card block, and a plug gasket is fixedly installed on the outer surface of the card block, and the card block is movably installed inside the positioning card, and the plug gasket is squeezed and adapted to the positioning card. As the mining work progresses, the mining face will continue to extend deeper or farther, and the original ventilation duct length cannot cover the new working area. Therefore, the staff needs to connect and assemble the ventilation duct and the installation pipe through the docking assembly. First, the staff will disassemble the docking ring and the positioning card, and put the docking ring on the outside of the ventilation duct. Then the staff will move the ventilation duct downward to the position of the positioning card, so that the docking ring and the card block installed on the card slot are inserted into the positioning card. When the card block is inserted into the positioning card, the plug pad and the positioning card are squeezed and deformed, so that the ventilation duct can be pushed into the installation pipe and connected with the installation pipe for installation. By connecting and extending the pipe, fresh air can be continuously delivered to the newly added working area, avoiding safety hazards caused by ventilation interruption.

[0014] Preferably, the positioning fixture includes a mounting seat, the mounting seat is fixedly mounted on the outer side of the mounting tube, a clamping bracket is fixedly mounted on the outer surface of the mounting seat, the clamping bracket is clamped on the outer surface of the sleeve ring, a buffer groove is provided inside the clamping bracket, a friction strip is fixedly mounted on the surface of the clamping bracket, and a limiting groove is provided on the surface of the clamping bracket away from the buffer groove, and the limiting groove is adapted to be squeezed with the plug gasket. After the docking ring is sleeved on the ventilation duct, the staff pushes the docking ring and the block and plug gasket installed on the slot into the limiting groove. At this time, the plug gasket is squeezed with the surface of the limiting groove during the pushing, causing the plug gasket made of elastic material to deform so that the block is stuck in the limiting groove. After the plug gasket passes through the limiting groove, the pressure on the plug gasket is released, so that the deformed plug gasket is stuck on the outer side of the clamping bracket. The ventilation duct is firmly installed by the cooperation of multiple plug gaskets and the clamping bracket.

[0015] The present invention provides a ventilation and regulating device for underground coal mines. It has the following beneficial effects: 1. The underground ventilation and adjustment device of the coal mine is started by the staff. The air guide component is rotated to transport the air outside the expanded pipe into the air guide duct. At this time, the air is transported along the air guide duct to the diversion duct. Since the diversion duct is provided with multiple air outlets, the multi-head air duct can be flexibly arranged according to the distribution position of the coal mine tunnel when guiding the air. The air volume is adjusted by the air valve on the diversion duct to meet the ventilation needs of different spaces. For example, when the heading face is excavated, it is necessary to strengthen the ventilation locally to discharge gas; when the mining face is stopped, the air volume can be appropriately reduced to save energy.

[0016] 2. The underground ventilation and adjustment device of the coal mine is installed by the staff in the air duct through the mounting frame. The staff starts the motor when working in the mine, so that the output end of the motor drives the rotating shaft and the air regulating piece to rotate. At this time, the air regulating piece rotates in the expanded pipe and transports the air outside the expanded pipe into the air duct, thereby maintaining the air circulation inside the mine.

[0017] Third, this underground coal mine ventilation control device uses a motor activated by a worker, which rotates the central shaft, collar, fan blades, and tilted blades. This directs air from the flared tube into the air duct. The worker adjusts the rotational speed of the tilted blades and fan blades to adjust the wind force. This reduces air output during mining face shutdowns, preventing the fan from operating at full load. The tilted blades have triangular sides, which, when the central shaft rotates, block debris, preventing it from entering the ventilation assembly and damaging the blades during rotation.

[0018] 4. The underground ventilation and adjustment device of the coal mine will continue to extend deeper or farther as the mining work progresses. The original ventilation duct length cannot cover the new working area. Therefore, the staff needs to connect and assemble the ventilation duct and the installation pipe through the docking assembly. First, the staff will separate the docking ring and the positioning card, and put the docking ring on the outside of the ventilation duct. Then the staff will move the ventilation duct downward to the position of the positioning card, so that the docking ring and the card block installed on the card slot are inserted into the positioning card. When the card block is inserted into the positioning card, the plug pad and the positioning card are squeezed and deformed, so that the ventilation duct can be pushed into the installation pipe and connected with the installation pipe for installation. By connecting and extending the pipe, fresh air can be continuously delivered to the newly added working area to avoid safety hazards caused by ventilation interruption.

[0019] 5. The underground ventilation and adjustment device of the coal mine, when the air is transported into the diversion duct along the air duct, the diversion pieces and filter covers installed at both ends of the diversion duct filter the dust in the air, and the air blows the filter covers when it flows along the diversion duct. Since the two filter covers are both made of flexible materials, the blowing of the air causes the filter covers to be deformed in the circulation cavity. At this time, the two filter covers bulge in the direction of the air blowing to form an arc shape, and the air is discharged outward along the filter holes opened on the surface of the filter covers. The setting of the double-layer filter cover increases the time that the air stays in the circulation cavity to filter the dust in the air, and the filter cover made of flexible material will shake after being blown by the air after filtering the dust, so as to clean the filtered dust and avoid clogging of the filter holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the external structure of a ventilation and regulating device for underground coal mines according to the present invention; Figure 2 This is a schematic diagram of the external structure of a ventilation and regulating device for underground coal mines according to the present invention from another angle; Figure 3 Schematic diagram of the connection structure between the ventilation assembly and the air guide assembly of the present invention; Figure 4 Schematic diagram of the structure of the air guide assembly of the present invention; Figure 5 This is a structural diagram of the air regulating member of the present invention; Figure 6 This is a schematic diagram of the connection structure between the ventilation component and the filter component of the present invention; Figure 7 Schematic diagram of the cross-sectional structure of the ventilation assembly of the present invention; Figure 8 It is a structural schematic diagram of the filter assembly of the present invention; Figure 9 Schematic diagram of the cross-sectional structure of the diverter of the present invention; Figure 10 Schematic diagram of another cross-sectional structure of the diverter of the present invention; Figure 11 It is a structural schematic diagram of the docking assembly of the present invention; Figure 12 Schematic diagram of the disassembled structure of the docking assembly of the present invention; Figure 13 This is an enlarged structural diagram of the positioning card of the present invention; Figure 14 It is a structural schematic diagram of the positioning card of the present invention.

[0021] In the figure: 1, fixing seat; 2, ventilation assembly; 21, flaring pipe; 22, air guide pipe; 23, connecting ring; 24, diverter duct; 25, mounting pipe; 3, filter assembly; 31, connecting ring; 32, diverter; 321, arc cover; 322, circular ring; 323, separator; 324, snap ring; 33, filter cover; 34, flow chamber; 35, filter hole; 4, air guide assembly; 41, rotating shaft; 42, Motor; 43. Mounting bracket; 44. Air regulating member; 441. Center axis; 442. Inclined blade; 443. Sleeve ring; 444. Fan blade; 5. Support seat; 6. Docking assembly; 61. Sleeve ring; 62. Docking ring; 63. Positioning clamp; 631. Mounting seat; 632. Clamping bracket; 633. Limiting groove; 634. Buffer groove; 635. Friction strip; 64. Slot; 65. Block; 66. Pad. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] The first embodiment, as Figures 1 to 14 As shown, the present invention provides a technical solution: a ventilation and adjustment device for an underground coal mine, comprising: a ventilation assembly 2, the ventilation assembly 2 being used to maintain air circulation inside the mine, a fixing seat 1 and a support seat 5 being fixedly mounted on the bottom of the ventilation assembly 2, two support seats 5 being provided, and the two support seats 5 being symmetrically arranged with the fixing seat 1 as the center; The ventilation component 2 includes a diversion duct 24, and an air duct 22 is fixedly installed on one side of the outer surface of the diversion duct 24, and a connecting ring 23 is fixedly installed on the outer surface of the air duct 22, and a flaring tube 21 is fixedly installed on the outer surface of the connecting ring 23. A mounting tube 25 is fixedly installed on the surface of the diversion duct 24 away from the air duct 22, and the air duct 22 is fixedly installed on the top of the fixing seat 1. The air duct 22 and the flaring tube 21 are sleeved on the outer surface of the air guide component 4. There are two mounting tubes 25, and the two mounting tubes 25 are symmetrically arranged with the air duct 22 as the center. The mounting tube 25 is fixedly installed on the top of the support seat 5, and the mounting tube 25 is sleeved on the outer surface of the filter component 3.

[0024] The staff starts the air guide component 4, and the air outside the expanded tube 21 is transported into the air guide duct 22 through the rotation of the air guide component 4. At this time, the air is transported along the air guide duct 22 to the diversion duct 24. Since the diversion duct 24 is provided with multiple air outlets, the multi-head air duct can be flexibly arranged according to the distribution position of the coal mine tunnel when guiding the air. The air volume is adjusted by the air valve on the diversion duct 24 to meet the ventilation needs of different spaces. For example, when the heading face is excavated, local ventilation needs to be strengthened to discharge gas; when the mining face is shut down, the air volume can be appropriately reduced to save energy.

[0025] An air guide assembly 4, which is used to adjust the wind force in the ventilation assembly 2 and is fixedly installed inside the ventilation assembly 2; The air guide assembly 4 includes a mounting bracket 43, which is fixedly mounted inside the air guide duct 22. A motor 42 is fixedly mounted on the top of the mounting bracket 43. A rotating shaft 41 is rotatably mounted on the output end of the motor 42. A wind regulating member 44 is rotatably mounted on the outer surface of the rotating shaft 41. The wind regulating member 44 is rotatably mounted inside the flared tube 21. A worker installs the motor 42 inside the air guide duct 22 via the mounting bracket 43. When the worker works in the mine, the motor 42 is started, causing the output end of the motor 42 to drive the rotating shaft 41 and the wind regulating member 44 to rotate. The wind regulating member 44 then rotates inside the flared tube 21, transporting air outside the flared tube 21 into the air guide duct 22 to filter dust in the air.

[0026] The filter assembly 3 is used for dust-proof air transportation in the ventilation assembly 2. The filter assembly 3 is fixedly installed inside the ventilation assembly 2 at one end away from the air guide assembly 4. Two filter assemblies 3 are provided, and the two filter assemblies 3 are symmetrically arranged with the air guide assembly 4 as the center.

[0027] The filter assembly 3 includes a connecting ring 31, and diverter pieces 32 are fixedly installed on both sides of the outer surface of the connecting ring 31. A filter cover 33 is fixedly installed at the connection between the diverter piece 32 and the connecting ring 31. The surface of the filter cover 33 is provided with filter holes 35. There are two filter covers 33. A flow cavity 34 is formed between the two filter covers 33 and the connecting ring 31. The diverter piece 32 is fixedly installed inside the diversion conduit 24. The filter cover 33 is set to a flexible material, and the filter holes 35 are set corresponding to the diverter piece 32.

[0028] When air is transported into the diversion duct 24 along the air duct 22, the diversion pieces 32 and filter covers 33 installed at both ends of the diversion duct 24 filter the dust in the air. When the air flows along the diversion duct 24, the air blows the filter covers 33. Since the two filter covers 33 are made of flexible materials, the blowing of air causes the filter covers 33 to be deformed in the circulation cavity 34 under the force. At this time, the two filter covers 33 bulge in the direction of the air blowing to form an arc shape, and the air is discharged outward along the filter holes 35 opened on the surface of the filter covers 33. The setting of the double-layer filter covers 33 increases the time that the air stays in the circulation cavity 34 to filter the dust in the air. After filtering the dust, the filter covers 33 made of flexible material will shake when blown by the air to clean the filtered dust and avoid clogging of the filter holes 35.

[0029] Docking assembly 6, which is used for stable connection between ventilation ducts, is provided with two groups of docking assembly 6, and both groups of docking assembly 6 are sleeved on the outer surface of ventilation assembly 2. The staff installs ventilation assembly 2 in the mine according to the distribution of coal mine tunnels, and then the staff starts the air guide assembly 4, so that the air guide assembly 4 rotates in the ventilation assembly 2, extracts the air outside the ventilation assembly 2, and transports the air along the ventilation assembly 2 to the side of the filter assembly 3. The air filtered by the filter assembly 3 is transported to the staff's working area to ensure the work needs of the personnel inside the coal mine. When it is necessary to assemble and extend the ventilation duct, the staff will connect the docking assembly 6 sleeved on the outside of the ventilation assembly 2 with the docked ventilation duct to prevent the mining face from continuously extending to deeper or farther places as the mine mining work progresses, and the original ventilation duct length cannot cover the new working area.

[0030] The docking assembly 6 includes a sleeve ring 61, which is sleeved on the outer surface of the mounting tube 25. A positioning clip 63 is provided on the outer surface of the sleeve ring 61. The positioning clip 63 is fixedly installed on the outer side of the mounting tube 25. A docking ring 62 is provided on the outer side of the positioning clip 63. A slot 64 is provided inside the docking ring 62. The surfaces of the docking ring 62 and the slot 64 are fixedly installed with a block 65. A plug gasket 66 is fixedly installed on the outer surface of the block 65. The block 65 is movably installed inside the positioning clip 63, and the plug gasket 66 is squeezed and adapted to the positioning clip 63. As the mining work progresses, the mining face will continue to extend deeper or farther, and the original ventilation duct length cannot cover the new working area. Therefore, the staff needs to dock and assemble the ventilation duct with the installation pipe 25 through the docking assembly 6. First, the staff disassembles the docking ring 62 and the positioning clip 63, and sets the docking ring 62 on the outside of the ventilation duct. Then the staff moves the ventilation duct downward to the position of the positioning clip 63, so that the docking ring 62 and the card block 65 installed on the card slot 64 are inserted into the positioning clip 63. When the card block 65 is inserted into the positioning clip 63, the plug gasket 66 and the positioning clip 63 are squeezed and deformed, so that the ventilation duct can be pushed into the installation pipe 25 and docked with the installation pipe 25 for installation. By docking and extending the duct, fresh air can be continuously delivered to the newly added working area, avoiding safety hazards caused by ventilation interruption.

[0031] The second embodiment, based on the first embodiment, see Figure 4 、 Figure 5 、 Figure 8 、 Figure 9 and Figure 10 As shown, the air regulating member 44 includes a central shaft 441, the outer surface of which is sleeved with a collar 443, and the outer surface of which is fixedly mounted a fan blade 444. The outer surface of the central shaft 441 away from the collar 443 is fixedly mounted with an inclined blade 442. Six inclined blades 442 are provided, and the six inclined blades 442 are distributed in a circular shape on the outer surface of the central shaft 441. The staff starts the motor 42, so that the output end of the motor 42 drives the central shaft 441, the collar 443, the fan blade 444, and the inclined blade 442 to rotate, thereby conveying the air outside the flared pipe 21 into the air guide duct 22. The staff adjusts the wind force by adjusting the rotation speed of the inclined blade 442 and the fan blade. When the mining face is shut down, the air output can be reduced to avoid the fan running at full load.

[0032] The central shaft 441 is rotatably mounted on the outer surface of the rotating shaft 41. The fan blades 444 are rotatably mounted inside the connecting ring 23 via a collar 443. The inclined blades 442 are adapted to the inner wall of the flared tube 21. The sides of the inclined blades 442 are configured as triangular structures. When the central shaft 441 rotates, the inclined blades 442 rotate with the central shaft 441 to block gravel, thereby preventing gravel from entering the ventilation assembly 2 and damaging the fan blades 444 during rotation.

[0033] The diverter 32 includes a circular ring 322, and a separator 323 is fixedly installed on the outer surface of the circular ring 322. There are several separators 323, and the separators 323 are distributed in a circular shape on the surface of the circular ring 322. The outer surface of the separator 323 is provided with a snap ring 324, and the outer surface of the snap ring 324 is fixedly installed with an arc cover 321. The separator 323 reinforces the ring 322. When the air is transported along the air duct 22 to the diversion duct 24, the double-layer filter cover 33 is blown by the wind and deformed to one side according to the wind direction. At this time, the position of the filter holes on the filter cover 33 changes to change the air flow path so that the dust in the air is adsorbed on the activated carbon particles. The filter cover 33 made of flexible material is easily deformed by the wind. The ring 322 and the separator 323 form a hollow structure. When the wind flows in the diversion duct 24, the wind speed will change. At this time, the deformed filter cover 33 will generate friction with the ring 322 and the separator 323, thereby shaking off the dust attached to the filter cover 33.

[0034] The arc cover 321 is fixedly mounted on the inner wall of the diversion conduit 24 . The surface of the arc cover 321 away from the clamping ring 324 is fixedly connected to the filter cover 33 . The filter cover 33 is squeezed and fitted with the ring 322 . Because the filter cover 33 is made of a flexible material, the filter cover 33 bulges toward one side of the ring 322 under the action of wind and contacts the ring 322. Since the ring 322 and the separator 323 form a hollow structure, the wind flowing in the diversion duct 24 does not flow at a uniform speed. When the wind speed changes and blows the filter cover 33, the position of the filter cover 33 and the ring 322 against each other changes, thereby causing friction between the filter cover 33 and the ring 322 and the separator 323. The filter holes 35 are provided on the surface of the filter cover 33 and the filter cover 33 is double-layered. When the wind blows on the filter cover 33, the double-layer filter cover 33 is deformed to one side to form an arc shape. Activated carbon particles are placed in the flow cavity 34. When the air passes through the double-layer filter cover 33, the time it stays in the flow cavity 34 is prolonged due to the obstruction of the filter cover 33, thereby improving the activated carbon adsorption and filtration effect.

[0035] The third embodiment, based on the first and second embodiments, see Figures 12 to 14As shown, the positioning clamp 63 includes a mounting seat 631, and the mounting seat 631 is fixedly installed on the outside of the mounting tube 25. The outer surface of the mounting seat 631 is fixedly installed with a clamping bend 632, and the clamping bend 632 is clamped on the outer surface of the sleeve ring 61. A buffer groove 634 is provided inside the clamping bend 632, and a friction strip 635 is fixedly installed on the surface of the clamping bend 632. A limiting groove 633 is provided on the surface of the clamping bend 632 away from the buffer groove 634, and the limiting groove 633 is squeezed and adapted to the plug pad 66. After the docking ring 62 is put on the ventilation duct, the staff pushes the docking ring 62 and the block 65 and the plug gasket 66 installed on the card slot 64 into the limit groove 633. At this time, the plug gasket 66 is squeezed with the surface of the limit groove 633 during the pushing, causing the plug gasket 66 made of elastic material to deform, so that the block 65 is stuck in the limit groove 633. After the plug gasket 66 passes through the limit groove 633, the pressure on the plug gasket 66 is released, so that the deformed plug gasket 66 is stuck on the outside of the clamping bend 632. The ventilation duct is firmly installed by cooperating with multiple plug gaskets 66 and the clamping bend 632.

[0036] During use, the staff installs the ventilation component 2 in the mine according to the distribution location of the coal mine tunnels, and then the staff starts the air guide component 4, so that the air guide component 4 rotates in the ventilation component 2, extracts the air outside the ventilation component 2, and transports the air along the ventilation component 2 to the side of the filter component 3. The air filtered by the filter component 3 is transported to the staff's working area to ensure the work needs of the personnel inside the coal mine.

[0037] The staff starts the air guide component 4, and the air outside the expanded tube 21 is transported into the air guide duct 22 through the rotation of the air guide component 4. At this time, the air is transported along the air guide duct 22 to the diversion duct 24. Since the diversion duct 24 is provided with multiple air outlets, the multi-head air duct can be flexibly arranged according to the distribution position of the coal mine tunnel when guiding the air. The air volume is adjusted by the air valve on the diversion duct 24 to meet the ventilation needs of different spaces. For example, when the heading face is excavated, local ventilation needs to be strengthened to discharge gas; when the mining face is shut down, the air volume can be appropriately reduced to save energy.

[0038] The staff installs the motor 42 in the air duct 22 through the mounting bracket 43. When the staff is working in the mine, the motor 42 is started, so that the output end of the motor 42 drives the rotating shaft 41 and the air regulating member 44 to rotate. At this time, the air regulating member 44 rotates in the flared pipe 21 and transports the air outside the flared pipe 21 to the air duct 22, thereby maintaining the air circulation inside the mine.

[0039] The staff starts the motor 42 so that the output end of the motor 42 drives the central shaft 441, the ring 443, the fan blades 444 and the inclined blades 442 to rotate, so as to transport the air outside the expanded tube 21 into the air guide duct 22. The staff adjusts the wind force by adjusting the rotation speed of the inclined blades 442 and the fan blades. When the mining face stops production, the air output can be reduced to avoid the fan running at full load.

[0040] The side of the inclined blade 442 is set to a triangular structure. When the central shaft 441 rotates, the inclined blade 442 rotates with the central shaft 441 to block the gravel, thereby preventing the gravel from entering the ventilation component 2 and damaging the fan blade 444 when the fan blade 444 rotates.

[0041] When air is transported into the diversion duct 24 along the air duct 22, the diversion pieces 32 and filter covers 33 installed at both ends of the diversion duct 24 filter the dust in the air. When the air flows along the diversion duct 24, the air blows the filter covers 33. Since the two filter covers 33 are made of flexible materials, the blowing of air causes the filter covers 33 to be deformed in the circulation cavity 34 under the force. At this time, the two filter covers 33 bulge in the direction of the air blowing to form an arc shape, and the air is discharged outward along the filter holes 35 opened on the surface of the filter covers 33. The setting of the double-layer filter covers 33 increases the time that the air stays in the circulation cavity 34 to filter the dust in the air. After filtering the dust, the filter covers 33 made of flexible material will shake when blown by the air to clean the filtered dust and avoid clogging of the filter holes 35.

[0042] The separator 323 reinforces the ring 322. The air passes through the separator 323 and contacts the filter cover 33, blowing the filter cover 33, causing the filter cover 33 to shake along the direction of air flow. Since the filter cover 33 is set to a flexible material, it will rub against the ring 322 during the shaking process, so as to facilitate the cleaning of dust attached to the filter cover 33.

[0043] As the mining work progresses, the mining face will continue to extend deeper or farther, and the original ventilation duct length cannot cover the new working area. Therefore, the staff needs to dock and assemble the ventilation duct with the installation pipe 25 through the docking assembly 6. First, the staff disassembles the docking ring 62 and the positioning clip 63, and sets the docking ring 62 on the outside of the ventilation duct. Then the staff moves the ventilation duct downward to the position of the positioning clip 63, so that the docking ring 62 and the card block 65 installed on the card slot 64 are inserted into the positioning clip 63. When the card block 65 is inserted into the positioning clip 63, the plug gasket 66 and the positioning clip 63 are squeezed and deformed, so that the ventilation duct can be pushed into the installation pipe 25 and docked with the installation pipe 25 for installation. By docking and extending the duct, fresh air can be continuously delivered to the newly added working area, avoiding safety hazards caused by ventilation interruption.

[0044] After the docking ring 62 is put on the ventilation duct, the staff pushes the docking ring 62 and the block 65 and the plug gasket 66 installed on the card slot 64 into the limit groove 633. At this time, the plug gasket 66 is squeezed with the surface of the limit groove 633 during the pushing, causing the plug gasket 66 made of elastic material to deform, so that the block 65 is stuck in the limit groove 633. After the plug gasket 66 passes through the limit groove 633, the pressure on the plug gasket 66 is released, so that the deformed plug gasket 66 is stuck on the outside of the clamping bend 632. The ventilation duct is firmly installed by cooperating with multiple plug gaskets 66 and the clamping bend 632.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0046] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A ventilation and regulating device for underground coal mines, characterized in that: include: A ventilation assembly (2) is used to maintain air circulation inside a mine, wherein a fixing seat (1) and a support seat (5) are fixedly mounted on the bottom of the ventilation assembly (2), two support seats (5) are provided, and the two support seats (5) are symmetrically arranged with the fixing seat (1) as the center; An air guide assembly (4), the air guide assembly (4) being used for regulating wind force within the ventilation assembly (2), the air guide assembly (4) being fixedly mounted inside the ventilation assembly (2); A filter assembly (3) is used for dust-proof conveying of air in the ventilation assembly (2), the filter assembly (3) being fixedly mounted inside the ventilation assembly (2) at one end away from the air guide assembly (4), two filter assemblies (3) being provided, and the two filter assemblies (3) being symmetrically arranged with the air guide assembly (4) as the center; A docking assembly (6) is used for stable communication between ventilation ducts. Two groups of the docking assembly (6) are provided, and both groups of the docking assembly (6) are sleeved on the outer surface of the ventilation assembly (2).

2. The ventilation and regulating device for underground coal mines according to claim 1, characterized in that: The ventilation assembly (2) includes a diversion duct (24), an air guide duct (22) is fixedly installed on one side of the outer surface of the diversion duct (24), a connecting ring (23) is fixedly installed on the outer surface of the air guide duct (22), a flaring tube (21) is fixedly installed on the outer surface of the connecting ring (23), a mounting tube (25) is fixedly installed on the surface of the diversion duct (24) away from the air guide duct (22), the air guide duct (22) is fixedly installed on the top of the fixing seat (1), the air guide duct (22) and the flaring tube (21) are sleeved on the outer surface of the air guide assembly (4), two mounting tubes (25) are provided, and the two mounting tubes (25) are symmetrically arranged with the air guide duct (22) as the center, the mounting tube (25) is fixedly installed on the top of the support seat (5), and the mounting tube (25) is sleeved on the outer surface of the filter assembly (3).

3. The ventilation and regulating device for underground coal mines according to claim 1, characterized in that: The air guide assembly (4) comprises a mounting frame (43), the mounting frame (43) being fixedly mounted inside the air guide pipe (22), a motor (42) being fixedly mounted on the top of the mounting frame (43), a rotating shaft (41) being rotatably mounted on the output end of the motor (42), an air regulating member (44) being rotatably mounted on the outer surface of the rotating shaft (41), and the air regulating member (44) being rotatably mounted inside the flared pipe (21).

4. The ventilation and regulating device for underground coal mines according to claim 3, characterized in that: The air regulating member (44) comprises a central shaft (441), the outer surface of the central shaft (441) is sleeved with a collar (443), the outer surface of the collar (443) is fixedly mounted with a fan blade (444), and the outer surface of the central shaft (441) away from the collar (443) is fixedly mounted with an inclined blade (442), six inclined blades (442) are provided, and the six inclined blades (442) are distributed in a circular shape on the outer surface of the central shaft (441).

5. The ventilation and regulating device for underground coal mines according to claim 4, characterized in that: The central shaft (441) is rotatably mounted on the outer surface of the rotating shaft (41), the fan blades (444) are rotatably mounted inside the connecting ring (23) via the collar (443), and the inclined blades (442) are adapted to the inner wall of the flared tube (21).

6. The ventilation and regulating device for underground coal mines according to claim 1, characterized in that: The filter assembly (3) comprises a connecting ring (31), diverter pieces (32) are fixedly mounted on both sides of the outer surface of the connecting ring (31), a filter cover (33) is fixedly mounted at the connection between the diverter piece (32) and the connecting ring (31), a filter hole (35) is provided on the surface of the filter cover (33), two filter covers (33) are provided, a flow cavity (34) is formed between the two filter covers (33) and the connecting ring (31), the diverter piece (32) is fixedly mounted inside the diverter conduit (24), the filter cover (33) is provided with a flexible material, and the filter hole (35) is provided corresponding to the diverter piece (32).

7. The ventilation and regulating device for underground coal mines according to claim 6, characterized in that: The flow dividing member (32) comprises a circular ring (322), a separator (323) being fixedly mounted on the outer surface of the circular ring (322), a plurality of separators (323) being provided, and the plurality of separators (323) being distributed in a circular shape on the surface of the circular ring (322), a clamping ring (324) being sleeved on the outer surface of the separator (323), and a circular arc cover (321) being fixedly mounted on the outer surface of the clamping ring (324).

8. The ventilation and regulating device for underground coal mines according to claim 7, characterized in that: The arc cover (321) is fixedly mounted on the inner wall of the diversion conduit (24); the surface of the arc cover (321) away from the clamping ring (324) is fixedly connected to the filter cover (33); and the filter cover (33) is extruded and fitted with the ring (322).

9. The ventilation and regulating device for underground coal mines according to claim 1, characterized in that: The docking assembly (6) includes a sleeve ring (61), the sleeve ring (61) is sleeved on the outer surface of the mounting tube (25), the outer surface of the sleeve ring (61) is provided with a positioning clamp (63), the positioning clamp (63) is fixedly installed on the outer side of the mounting tube (25), a docking ring (62) is provided on the outer side of the positioning clamp (63), a card slot (64) is provided inside the docking ring (62), the surfaces of the docking ring (62) and the card slot (64) are fixedly installed with a card block (65), the outer surface of the card block (65) is fixedly installed with a plug pad (66), the card block (65) is movably installed inside the positioning clamp (63), and the plug pad (66) is squeezed and adapted to the positioning clamp (63).

10. The ventilation and regulating device for underground coal mines according to claim 9, characterized in that: The positioning clamp (63) includes a mounting seat (631), the mounting seat (631) is fixedly mounted on the outside of the mounting tube (25), a clamping bend (632) is fixedly mounted on the outer surface of the mounting seat (631), the clamping bend (632) is clamped on the outer surface of the sleeve ring (61), a buffer groove (634) is provided inside the clamping bend (632), a friction strip (635) is fixedly mounted on the surface of the clamping bend (632), and a limiting groove (633) is provided on the surface of the clamping bend (632) away from the buffer groove (634), and the limiting groove (633) is squeezed and adapted to the plug gasket (66).

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