An air purification device used in coal mines

Abstract

The present invention relates to the field of air treatment technology, and specifically discloses an air purification device for use in coal mines, including a shell, a driving motor is fixedly connected to the shell through a connecting frame, an exhaust fan fixedly connected to the shell is installed on the output shaft of the driving motor, an annular shell is fixedly connected to the shell, a filter is provided on the annular shell, a rotating shaft of the exhaust fan is fixedly connected to a first rotating shaft, the first rotating shaft penetrates the filter on the annular shell and is rotatably connected thereto, the first rotating shaft is fixedly connected to a fixed plate, the fixed plate contacts and cooperates with the windward side of the filter on the annular shell, and a collecting mechanism for collecting impurities is installed on the shell. The present invention cleans the filter on the annular shell through a fixed plate, reduces the blockage of the filter on the annular shell, avoids the device from being shut down for cleaning, thereby extending the continuous filtering time of the filter on the annular shell, improving the air quality in coal mines, and protecting the health of workers.

Description

Technical Field

[0001] The invention relates to the technical field of air treatment, and in particular to an air purification device used in underground coal mines. Background Art

[0002] During the mining and construction process in coal mines, a large amount of dust (including dust and coal dust) will be raised in the coal mine tunnels. Workers in the tunnels are prone to inhaling dust, which endangers the health of their respiratory systems. For this reason, air purification devices with filters are often used to treat the air in the coal mine tunnels, thereby filtering and purifying the air in the tunnels in an orderly manner to improve the underground working environment of coal mines. However, when the existing filter-type filtering equipment filters the dust in the air, the dust in the air will continue to adhere to the filter of the purification equipment, causing the filter to gradually become blocked. After the filter is blocked, the dust treatment efficiency in the air becomes low. In order to ensure the quality of the air in the coal mine, the blocked equipment needs to be shut down for cleaning. However, the shutdown of the purification equipment will cause a gap in the air treatment in the coal mine tunnels. During this gap, dust is scattered in the air, which is easy for workers to inhale dust, endangering the health of their respiratory systems. Summary of the invention

[0003] Aiming at the problem that when the existing air purification device is shut down for cleaning, dust is scattered in the air, which endangers the respiratory health of workers, the present invention provides an air purification device for use in coal mines.

[0004] The technical implementation scheme of the present invention is as follows: an air purification device for use in coal mines, comprising a shell, the shell being fixedly connected to two legs, a driving motor being fixedly connected to one side of the shell through a connecting frame, an exhaust fan fixedly connected to the shell being installed on the output shaft of the driving motor, a first liquid guide tube being fixedly connected to and communicated with the shell of the exhaust fan, the first liquid guide tube penetrating the shell and being fixedly connected thereto, an annular shell being fixedly connected to one side of the shell away from the driving motor, the annular shell being provided with a filter screen for filtering dust in the air, and the annular shell being provided with two symmetrically distributed annular cavity, a first rotating ring is rotatably arranged in the two annular cavities of the annular shell, the rotating shaft of the exhaust fan is fixedly connected with a first rotating shaft, the first rotating shaft penetrates the filter screen on the annular shell and is rotatably connected thereto, a fixed plate is fixedly connected to the end of the first rotating shaft away from the exhaust fan, the fixed plate is provided with an air guide cavity, the fixed plate is fixedly connected to the adjacent first rotating ring, and the air guide cavity on the fixed plate is connected to the adjacent annular cavity on the annular shell, the fixed plate is in contact with the windward side of the filter screen on the annular shell, and a collecting mechanism for collecting impurities is installed on the shell.

[0005] Preferably, the collecting mechanism includes a collecting shell, which is fixedly connected to the side wall of the shell, and the collecting shell is fixedly connected to and communicated with a first air duct, an exhaust hole is provided on the collecting shell, and a one-way valve is installed in the exhaust hole of the collecting shell and the first air duct, the first air duct penetrates the shell and is communicated with the corresponding annular cavity on the annular shell, the collecting shell is embedded with a first fixed shell, the first fixed shell penetrates the shell and is fixedly connected thereto, a filter is installed on one side of the first fixed shell located in the collecting shell, and a first sliding push rod is slidably provided on the other side of the first fixed shell, a tension spring is installed between the first sliding push rod and the first fixed shell, a protrusion is fixedly connected to the first rotating shaft, and the protrusion is squeezed and matched with the first sliding push rod, and a cleaning component for cleaning the filter thereon is provided on the first fixed shell.

[0006] Preferably, one side of the first fixed shell located inside the collecting shell is configured in a truncated cone shape.

[0007] Preferably, the cleaning assembly includes a bracket, which is fixedly connected to the first fixed shell, and the bracket is rotatably provided with a second rotating shaft, which penetrates one end of the first fixed shell on which the filter is installed and is rotatably connected thereto, one end of the second rotating shaft located in the first fixed shell is fixedly connected to a fan, and the other end of the second rotating shaft is fixedly connected to a symmetrical cleaning rod, and the cleaning rod is in contact with and cooperates with the filter on the first fixed shell.

[0008] Preferably, it also includes a recoil mechanism for cleaning the filter on the first rotating ring, the recoil mechanism is arranged on the shell, and the recoil mechanism includes a second fixed shell, the second fixed shell is fixedly connected to the shell, the second fixed shell is slidably provided with a second sliding push rod, a tension spring is installed between the second sliding push rod and the second fixed shell, the second sliding push rod is extruded and matched with the protrusion, the second sliding push rod is provided with a through hole for installing a one-way valve, one end of the second fixed shell located outside the shell is fixedly connected to and communicated with a second air guide pipe, a one-way valve is installed in the second air guide pipe, the second air guide pipe penetrates the shell and is connected with the corresponding annular cavity on the annular shell, the first rotating shaft is fixedly connected to a fixing frame, the fixing frame contacts and cooperates with the air outlet side of the filter on the annular shell, the fixing frame is provided with an air guide cavity, the fixing frame is fixedly connected to the adjacent first rotating ring, and the air guide cavity on the fixing frame is connected with the adjacent annular cavity on the annular shell.

[0009] Preferably, it also includes a spraying mechanism for uniformly spraying liquid for dust removal, the spraying mechanism is arranged on the shell, the spraying mechanism includes a liquid storage shell, the liquid storage shell is fixedly connected to the side wall of the shell, and the first liquid guide tube is connected to the liquid storage shell, the shell is provided with a circular hole connected to the liquid storage shell, a water pump is installed on the side wall of the liquid storage shell, a water pump is installed at the liquid inlet end of the water pump, a water pumping pipe is installed, the end of the water pumping pipe is embedded in the bottom of the liquid storage shell, and a second liquid guide tube is installed at the liquid outlet end of the water pump, and a plurality of evenly distributed groups of nozzles are embedded on the air inlet side of the shell, and the evenly distributed groups of the nozzles are all fixedly connected and connected to the second liquid guide tube, a switching component for driving the water pump to work is provided on the first rotating shaft, and an adjusting component for adjusting the flow cross-section in all the nozzles is provided on the shell.

[0010] Preferably, each group of the nozzles includes a plurality of nozzles evenly distributed along the center line of the shell, and the plurality of nozzles in each group gradually approach the center line of the shell in the direction from the air inlet to the air outlet.

[0011] Preferably, the switching assembly includes a first locking block, the first locking block is fixedly connected to the first rotating shaft, the first rotating shaft is rotatably provided with a second rotating ring, the second rotating ring is provided with a sliding cavity filled with liquid, a second locking block that is limitedly slidably provided in the sliding cavity of the second rotating ring and cooperates with the first locking block, the second rotating ring is rotatably provided with a circular ring, the second rotating ring is provided with circular holes equidistantly distributed in the circumferential direction, the circular holes on the second rotating ring are communicated with the sliding cavity on it, the circular ring is fixedly connected with a first conduit filled with liquid, the first conduit is communicated with an adjacent circular hole on the second rotating ring, the shell is rotatably provided with a third rotating shaft fixedly connected to the driving shaft on the water pump, the first The three rotating shafts and the second rotating ring are driven by a bevel gear set, the shell is embedded with a third fixed shell, the third fixed shell is located on the side of the filter screen on the annular shell where air flows out, a third sliding push rod is slidably arranged in the third fixed shell, a spring is installed between the third sliding push rod and the third fixed shell, a sliding ring is slidably arranged in the third fixed shell with limited sliding movement with the third sliding push rod, the third fixed shell, the third sliding push rod and the sliding ring cooperate to form a chamber filled with liquid, the chamber composed of the third fixed shell, the third sliding push rod and the sliding ring is communicated with the first conduit, and a limiting component for limiting the resetting of the third sliding push rod and the sliding ring is arranged on the third fixed shell.

[0012] Preferably, the limiting component includes a fourth fixed shell, the fourth fixed shell is fixedly connected to the side wall of the third fixed shell, a sliding plug and a fourth sliding push rod are slidably arranged in the fourth fixed shell, a spring is installed between the sliding plug and the fourth sliding push rod, the sliding plug penetrates the third fixed shell and cooperates with the sliding ring for extrusion and limiting, the fourth sliding push rod penetrates the liquid storage shell and is slidably connected thereto, a first sliding frame is slidably arranged in the liquid storage shell, a tension spring is installed between the first sliding frame and the liquid storage shell, the first sliding frame is provided with a folded filter screen, the first sliding frame slidably cooperates with the fourth sliding push rod, a guide plate is fixedly connected in the shell body, and the guide plate is located between the nozzle and the annular shell.

[0013] Preferably, the adjustment component includes second conduits distributed at equal intervals, and the second conduits distributed at equal intervals are all fixedly connected to the inside of the shell. The second conduits are slidably provided with a sliding frame, and the sliding frame is provided with a filter located in an adjacent second conduit, and the mesh size of the filter on the sliding frame is larger than the mesh size of the filter on the annular shell. A spring is installed between the sliding frame and the adjacent second conduits, and each group of the nozzles is slidably provided with a second sliding frame for changing the flow cross section therein, and the second sliding frame is fixedly connected to the adjacent sliding frame.

[0014] The beneficial effects of the present invention are:

[0015] The present invention continuously cleans impurities on the annular shell filter screen by rotating the fixed plate, reduces the amount of dust attached to the annular shell filter screen, thereby extending the continuous filtering time of the annular shell filter screen, improving the air quality in the coal mine, and protecting the health of workers. The transfer collection of the collecting shell is convenient for operators to clean the filtered dust without stopping the machine, and then cooperates with the fixed frame to jet back to flush the annular shell filter screen, thereby reducing the residual amount of dust on the annular shell filter screen, thereby further extending the continuous filtering time of the annular shell filter screen. The third sliding push rod is used to detect the pressure in the shell body, triggering the nozzle to spray water to adsorb and separate the dust in the air, and accelerating the speed of separating the dust in the air by the device. The filter screen on the first sliding frame is then used to trigger the sliding plug to limit the third sliding push rod and the sliding ring, thereby maintaining the time of water spraying to reduce dust, and ensuring the relative stability of the air flow rate in the shell. The movement of the sliding frame and the second sliding frame is used to adjust the flow rate of the water sprayed by the nozzle, and the capture efficiency of the water mist for large particles of dust in the air is improved, that is, the dust removal effect of the water mist dust removal method is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the internal parts of the housing of the present invention;

[0019] Figure 3 The cross-sectional view of the annular shell and the first rotating ring of the present invention;

[0020] Figure 4 is a cross-sectional view of the collecting mechanism of the present invention;

[0021] Figure 5 It is a three-dimensional structural schematic diagram of the cleaning component of the present invention;

[0022] Figure 6 It is a schematic structural diagram of the annular shell and the components of the second air guide pipe of the present invention;

[0023] Figure 7 It is a three-dimensional structural schematic diagram of the spraying mechanism of the present invention;

[0024] Figure 8 is a cross-sectional view of the switching assembly of the present invention;

[0025] Fig. 9 An exploded view of the components at the second rotating ring and the second locking block of the present invention;

[0026] Fig.10 It is a schematic structural diagram of the components of the fourth sliding push rod and the first sliding frame of the present invention;

[0027] Fig.11 It is a cross-sectional view of the adjustment assembly of the present invention.

[0028] Explanation of symbols in the figure:

[0029] 1. housing, 11. driving motor, 12. exhaust fan, 121. first liquid guide pipe, 13. annular housing, 14. first rotating ring, 15. first rotating shaft, 16. fixing plate;

[0030] 2. a collecting shell, 21. a first air guide tube, 22. a first fixed shell, 23. a first sliding push rod, 24. a bump;

[0031] 3. bracket, 31. second rotating shaft, 32. fan, 33. cleaning rod;

[0032] 4. second fixed shell, 41. second sliding push rod, 42. second air guide tube, 43. fixed frame;

[0033] 5. liquid storage shell, 51. water pump, 52. water pumping pipe, 53. second liquid guide pipe, 55. nozzle;

[0034] 6. first locking block, 61. second rotating ring, 62. second locking block, 63. circular ring, 64. first guide tube, 65. third rotating shaft, 66. third fixed shell, 67. third sliding push rod, 68. sliding ring;

[0035] 7. fourth fixed shell, 71. sliding plug, 72. fourth sliding push rod, 73. first sliding frame, 74. guide plate;

[0036] 8. Second guide tube, 81. Sliding frame, 82. Second sliding frame. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0038] Research has found that when existing filter-type filtering equipment filters dust in the air, the dust in the air will continue to adhere to the filter of the purification equipment, causing the filter to gradually become blocked. After the filter is blocked, the efficiency of handling dust in the air becomes low, causing the amount of dust in the air to gradually accumulate and increase, endangering the health of the workers' respiratory system.

[0039] In view of this discovery, the present invention designs an air purification device that can operate without stopping even when there is a blockage in the equipment.

[0040] Example 1: An air purification device for use in coal mines, referring to Figure 1-Figure 3As shown, it includes a shell 1, the left side of the shell 1 is an air inlet, the right side of the shell 1 is an air outlet, the left and right parts of the shell 1 are fixedly connected with legs equipped with rollers, the right side of the shell 1 is fixedly connected with a drive motor 11 through a connecting frame, and an air treatment unit such as activated carbon can be connected to the right end of the shell 1 to treat odor or harmful gases in the air, a switch for controlling the start of the drive motor 11 is installed on the shell 1, and an exhaust fan 12 fixed to the shell 1 is installed on the output shaft of the drive motor 11, and the shell of the exhaust fan 12 is fixedly connected and connected with a first liquid guide pipe 121 penetrating the shell 1, and an annular shell 13 is fixedly connected in the shell 1, and the annular shell 13, the exhaust fan 12 and the drive motor 11 are arranged in sequence from left to right, and a filter screen for filtering dust in the air is arranged in the middle of the annular shell 13, and an annular cavity is arranged on the left and right parts of the annular shell 13. A first rotating ring 14 is rotatably arranged in both annular cavities, a first rotating shaft 15 is fixedly connected to the left end of the rotating shaft of the exhaust fan 12, the left part of the first rotating shaft 15 penetrates the filter screen on the annular shell 13 and is rotatably connected thereto, a fixing plate 16 is fixedly connected to the left end of the first rotating shaft 15 and is fitted with the left side surface of the filter screen on the annular shell 13, an air guide cavity is arranged in the fixing plate 16, the fixing plate 16 is fixedly connected to the first rotating ring 14 on the left side, and the air guide cavity on the fixing plate 16 is communicated with the adjacent annular cavity on the annular shell 13, a collecting mechanism for collecting impurities is installed on the shell 1, the fixing plate 16 is rotated to scrape and clean the impurities on the filter screen of the annular shell 13, and the impurities attached to the filter screen of the annular shell 13 are reduced, that is, while ensuring the stability of the air flow in the shell 1, the continuous filtering time of the filter screen on the annular shell 13 for dust in the air is extended, thereby improving the air quality in the coal mine.

[0041] Reference Figure 2-Figure 5As shown, the collecting mechanism includes a collecting shell 2, which is fixedly connected to the front side of the shell body 1, and the upper part of the collecting shell 2 is fixedly connected and connected to the first air guide pipe 21. The upper part of the front side of the collecting shell 2 is provided with an exhaust hole, and the exhaust hole on the collecting shell 2 and the first air guide pipe 21 are both equipped with a one-way valve. The one-way valve on the collecting shell 2 is used for the gas inside it to flow out of it, and the one-way valve on the first air guide pipe 21 is used for the gas inside the collecting shell 2 to enter it. The left end of the first air guide pipe 21 penetrates the shell body 1 and is connected to the annular cavity on the left side of the annular shell 13. A sealing door is provided at the front of the collecting shell 2, and a first fixed shell 22 that penetrates the shell body 1 and is fixed thereto is embedded at the rear of the collecting shell 2. The upper side surface of the first fixed shell 22 is set to be truncated cone-shaped, and A filter is installed on the frustum of the first fixed shell 22, a first sliding push rod 23 is slidably arranged at the rear of the first fixed shell 22, a tension spring is installed between the first sliding push rod 23 and the first fixed shell 22, a protrusion 24 is fixedly connected to the first rotating shaft 15, the four sides of the protrusion 24 are arc-shaped, the middle parts of the four arc-shaped sides of the protrusion 24 are recessed toward the opposite sides, the arc-shaped sides of the protrusion 24 are used to squeeze the first sliding push rod 23 to move at a variable speed, the protrusion 24 is squeezed and matched with the first sliding push rod 23, a cleaning component for cleaning the filter thereon is provided on the first fixed shell 22, and the collecting shell 2 is used as a transfer bin to store dust, so that subsequent operators can clean the dust filtered in the device without stopping the machine.

[0042] Reference Figure 5 As shown, the cleaning component includes a bracket 3, which is fixed to the inner wall of the first fixed shell 22. A second rotating shaft 31 is rotatably provided in the middle of the bracket 3. The upper end of the second rotating shaft 31 penetrates the first fixed shell 22 and is rotatably connected thereto. A fan 32 is fixed to the lower end of the second rotating shaft 31. Two symmetrical cleaning rods 33 are fixed to the upper end of the second rotating shaft 31. Both cleaning rods 33 are in contact with and cooperate with the filter screen on the first fixed shell 22. The filter screen on the first fixed shell 22 is cleaned by using the cleaning rods 33 to ensure that a certain amount of gas is always sucked into the first fixed shell 22, so that the fixed plate 16 absorbs the dust accumulated on the filter screen of the first fixed shell 22.

[0043] When treating the air in the coal mine tunnel, the operator starts the drive motor 11 in the device through the switch, and the drive motor 11 drives the exhaust fan 12 to rotate. The exhaust fan 12 rotates to make the air in the coal mine tunnel move from the left end of the shell 1 to the right end thereof. In the process of the gas passing through the filter screen on the annular shell 13, the filter screen on the annular shell 13 filters and blocks the dust in the air (the main components of the dust are dust and coal dust), thereby reducing the amount of dust in the air in the coal mine tunnel, improving the air quality in the coal mine, and protecting the health of the workers.

[0044] During the rotation of the exhaust fan 12, the exhaust fan 12 drives the first rotating shaft 15 to rotate, and the first rotating shaft 15 drives the fixed plate 16 and the protrusion 24 to rotate. The fixed plate 16 rotates to clean the dust intercepted by the filter screen of the annular shell 13, and the protrusion 24 rotates to squeeze the first sliding push rod 23 to move back and forth. When the first sliding push rod 23 retracts into the first fixed shell 22, it is an air jet operation, and the gas in the collection shell 2 is discharged through the one-way valve thereon. When the first sliding push rod 23 extends out of the first fixed shell 22, it is a vacuum operation, so that the fixed plate 16 performs an air suction operation and absorbs impurities on the filter screen of the annular shell 13. The fixed plate 16 inhales air to allow the gas to enter the first fixed shell 22 through the air guide cavity thereon, the first air guide pipe 21 and the collection shell 2. The dust impurities in the inhaled gas are stored in the collection shell 2, and then the above work is repeated to continuously collect the dust on the filter screen of the annular shell 13, so that the flow rate of the air in the shell 1 remains relatively stable.

[0045] When dust enters the first fixed shell 22, part of the dust will adhere to the filter screen on the first fixed shell 22. At the same time, as the gas passes through the filter screen on the first fixed shell 22 back and forth, the gas blows the fan 32 to rotate. The rotation of the fan 32 drives the second rotating shaft 31 and the cleaning rod 33 to rotate. The cleaning rod 33 rotates to clean the impurities attached to the filter screen on the first fixed shell 22, thereby ensuring the normal circulation of air in the first fixed shell 22.

[0046] After working for a period of time, the operator regularly opens the sealed door on the collection shell 2 to clean the dust accumulated in the collection shell 2, so as to clean the dust filtered by the device without stopping the machine, thereby extending the effective filtering time of the device and improving the air quality in the coal mine.

[0047] Example 2: Based on Example 1, refer to Figure 3 , Figure 4 and Figure 6As shown, it also includes a recoil mechanism for cleaning the filter screen on the first rotating ring 14, the recoil mechanism is arranged on the shell 1, and the recoil mechanism includes a second fixed shell 4, the second fixed shell 4 is fixedly connected to the shell 1, the second fixed shell 4 and the first fixed shell 22 are centrally symmetrically distributed on the shell 1, and the front part of the second fixed shell 4 is slidably provided with a second sliding push rod 41 which is pressed and matched with the protrusion 24, a tension spring is installed between the second sliding push rod 41 and the second fixed shell 4, and the second sliding push rod 41 is provided with a through hole for installing a one-way valve, and the one-way valve on the second sliding push rod 41 is used for gas to enter the chamber formed by the second sliding push rod 41 and the second fixed shell 4. The rear end of the second fixed shell 4 is fixedly connected to and communicated with a second air duct 42, a one-way valve is installed in the second air duct 42, the one-way valve in the second air duct 42 is used for external gas to enter therein, the left part of the second air duct 42 penetrates the shell body 1 and is communicated with the annular cavity on the right side of the annular shell 13, a fixing frame 43 is fixedly connected to the first rotating shaft 15 and is in contact with the right side surface of the filter screen on the annular shell 13, the fixing frame 43 is provided with an air guide cavity, the air outlet of the air guide cavity on the fixing frame 43 faces the filter screen of the annular shell 13, the fixing frame 43 is fixedly connected to the adjacent first rotating ring 14, and the air guide cavity of the fixing frame 43 is communicated with the annular cavity on the right side of the annular shell 13.

[0048] During the rotation of the protrusion 24, the protrusion 24 squeezes the second sliding push rod 41 to move in the second fixed shell 4. Under the tension of the tension spring on the second sliding push rod 41, the second fixed shell 4 always fits on the surface of the protrusion 24, so that the second sliding push rod 41 moves back and forth. During the movement of the second sliding push rod 41 into the second fixed shell 4, the one-way valve on the second sliding push rod 41 is in a closed state. At this time, the second sliding push rod 41 moves to push the gas in the second fixed shell 4 through the second air guide pipe 42 and the one-way valve on it. The valve enters the adjacent annular cavity on the annular shell 13, and then the gas is ejected from the air guide cavity of the fixed frame 43. The ejected gas recoils and cleans the filter screen on the annular shell 13 to reduce the amount of dust attached to the filter screen of the annular shell 13. Then the second sliding push rod 41 moves in the opposite direction and resets, and the external gas enters the second fixed shell 4 through the one-way valve on the second sliding push rod 41. During this process, the one-way valve on the second air guide pipe 42 is in a closed state. The above-mentioned jet operation is repeated subsequently to recoil and clean the filter screen on the annular shell 13.

[0049] During the jetting process of the air guide cavity on the fixed frame 43, the fixed plate 16 performs the suction operation at the same time. Because the fixed plate 16 is directly opposite to the fixed frame 43, the filter between the fixed plate 16 and the fixed frame 43 is less squeezed by the air flow than the remaining area of ​​the filter on the annular shell 13, so that the cleaning effect of the fixed plate 16 and the fixed frame 43 on the filter is enhanced, further keeping the air flow rate in the shell 1 relatively stable and reducing the dust in the air in the tunnel.

[0050] Example 3: Based on Example 2, refer to Figure 2and Figure 7 As shown, it also includes a spraying mechanism for uniformly spraying liquid for dust removal, the spraying mechanism is arranged on the shell 1, and the spraying mechanism includes a liquid storage shell 5 for storing water, the liquid storage shell 5 is fixedly connected to the left part of the lower side of the shell 1, and the left end of the first liquid guide tube 121 is connected to the liquid storage shell 5, the lower part of the shell 1 is provided with a circular hole connected to the liquid storage shell 5, a water pump 51 is installed on the right side of the liquid storage shell 5, a water pump 52 is installed at the liquid inlet end of the water pump 51, the lower end of the water pump 52 is embedded in the bottom of the liquid storage shell 5, and a second liquid guide tube 53 is installed at the liquid outlet end of the water pump 51. The left part of the shell 1 is embedded with three groups of uniformly distributed The nozzles 55 are arranged in a group with three nozzles. The three nozzles 55 in each group are evenly distributed on the center line of the shell 1, and the three nozzles 55 in each group gradually approach the center line of the shell 1 from left to right. The three groups of nozzles 55 are fixedly connected to and communicated with the second liquid guide tube 53. A switching component for driving the water pump 51 is arranged on the first rotating shaft 15. An adjusting component for adjusting the flow cross section in all the nozzles 55 is arranged on the shell 1. The nozzles 55 are used to spray water mist to absorb dust in the air, reduce the workload of the filter on the annular shell 13, and ensure the relative stability of the air flow rate in the shell 1.

[0051] Reference Figure 7-Figure 9As shown, the switching assembly includes a first locking block 6, the first locking block 6 is fixedly connected to the first rotating shaft 15, the first rotating shaft 15 is rotatably provided with a second rotating ring 61, the second rotating ring 61 is located on the left side of the first locking block 6, the second rotating ring 61 is provided with a sliding cavity filled with liquid, and the sliding cavity of the second rotating ring 61 is provided with a second locking block 62 in a limited sliding manner, the second locking block 62 moves and fits tightly with the first locking block 6, and the first locking block 6 drives the second locking block 62 to move and fit ... The second rotating ring 61 is provided with a circular ring 63 on its side wall, and a plurality of circular holes equidistantly distributed in the circumferential direction are provided in the area near the circular ring 63 on the second rotating ring 61. The circular ring 63 is fixedly connected with a first conduit 64 filled with liquid, and the first conduit 64 is connected with the inner sliding cavity of the second rotating ring 61 through the circular hole on the second rotating ring 61. The front part of the housing 1 is provided with a third rotating shaft 65, and the front end of the third rotating shaft 65 is fixedly connected with the driving shaft on the water pump 51. The rear end of the third rotating shaft 65 is driven by a bevel gear set with the second rotating ring 61. The housing 1 The side wall of the annular shell 13 is fixedly connected with a third fixed shell 66, and the third fixed shell 66 is located on the right side of the annular shell 13. A third sliding push rod 67 is slidably arranged in the third fixed shell 66. The cross section of the third sliding push rod 67 in the vertical direction is an I-shaped. A spring is installed between the upper end of the third sliding push rod 67 and the third fixed shell 66. A sliding ring 68 is sealed and slidably arranged in the third fixed shell 66. The sliding ring 68 slides on the third sliding push rod 67. A limiting ring for limiting the movement of the sliding ring 68 is provided in the middle of the third sliding push rod 67. The fixed shell 66, the third sliding push rod 67 and the sliding ring 68 cooperate to form a chamber filled with liquid. The chamber composed of the third fixed shell 66, the third sliding push rod 67 and the sliding ring 68 is connected to the first conduit 64. The third fixed shell 66 is provided with a limiting component for limiting the reset of the third sliding push rod 67 and the sliding ring 68. The filter screen on the annular shell 13 is blocked to reduce the pressure in the shell 1 to trigger the movement of the third sliding push rod 67. Subsequently, through the transmission of the connected parts, the second locking block 62 and the first locking block 6 cooperate to trigger the water spray dust removal operation.

[0052] Reference Figure 8 and Fig.10As shown, the limiting component includes a fourth fixed shell 7, the fourth fixed shell 7 is fixed to the left part of the outer side of the third fixed shell 66, a sliding plug 71 and a fourth sliding push rod 72 are slidably arranged in the fourth fixed shell 7, the sliding plug 71 is located on the right side of the fourth sliding push rod 72, a spring is installed between the sliding plug 71 and the fourth sliding push rod 72, the third fixed shell 66 is provided with a through hole for the sliding plug 71 to slide, and the sliding ring 68 and the third sliding push rod 67 are both limited with the sliding plug 71, the left part of the fourth sliding push rod 72 penetrates the liquid storage shell 5 and is slidably connected thereto, and the liquid storage shell 5 slides in the liquid storage shell 5. A first sliding frame 73 is provided, and a tension spring is installed between the first sliding frame 73 and the liquid storage shell 5. The first sliding frame 73 is provided with a folded filter screen, and the folded filter screen on the first sliding frame 73 gradually tilts downward from back to front. The first sliding frame 73 is provided with an inclined groove that slides with the fourth sliding push rod 72. A guide plate 74 is fixedly connected to the shell 1, and the guide plate 74 is located between the nozzle 55 and the annular shell 13. The lower part of the guide plate 74 is provided with a circular hole that is connected to the circular hole on the shell 1. The sliding plug 71 is used to limit the sliding ring 68 and the third sliding push rod 67 to extend the water spraying time of the nozzle 55.

[0053] Reference Figure 7 and Fig.11 As shown, the regulating component includes three second conduits 8 distributed at equal intervals, and the three second conduits 8 are all fixedly connected to the inside of the shell 1. The diameters of the two ends of the second conduit 8 are larger than the diameter of the middle part. A slide groove is arranged in the middle part of the second conduit 8, and a sliding frame 81 is slidably arranged at the slide groove on the second conduit 8. The part of the sliding frame 81 located in the second conduit 8 is provided with a filter. The second conduit 8 is provided with a baffle for blocking the slide groove on the adjacent second conduit 8. The mesh of the filter on the sliding frame 81 is larger than the mesh of the filter on the annular shell 13, which is used to monitor the amount of large particles of dust in the air. A spring is installed between the sliding frame 81 and the adjacent second conduits 8. A second sliding frame 82 is slidably arranged for each group of nozzles 55. The second sliding frame 82 is used to change the flow cross section in the corresponding nozzle 55, and the second sliding frame 82 is fixedly connected to the adjacent sliding frame 81.

[0054] When the amount of dust in the tunnel air increases, a large amount of dust in the air adheres to the filter screen of the annular shell 13, causing the air flow in the shell 1 to decrease sharply. At this time, the exhaust fan 12 works to reduce the pressure on the right side of the annular shell 13 in the shell 1, generating negative pressure, and acting on the third sliding push rod 67 in the third fixed shell 66, causing the third sliding push rod 67 to move up and squeeze the adjacent spring.

[0055] During the movement of the third sliding push rod 67, the third sliding push rod 67 moves so that its lower part moves close to the sliding ring 68 first. During this process, if the pressure in the shell 1 is restored, the third sliding push rod 67 moves in the opposite direction and resets under the action of the spring force on the third sliding push rod 67. At this time, the distance between the third sliding push rod 67 and the sliding ring 68 is used to buffer the small-scale negative pressure fluctuations in the shell 1.

[0056] If the pressure in the shell 1 continues to decrease, after the third sliding push rod 67 moves up and contacts the sliding ring 68, the third sliding push rod 67 continues to move and squeezes the sliding ring 68 to move up. The upward movement of the sliding ring 68 causes the liquid in the sliding cavity of the second rotating ring 61 to enter the cavity of the third fixed shell 66 through the first conduit 64. With the flow of the liquid in the sliding cavity on the second rotating ring 61, the second locking block 62 moves rightward on the second rotating ring 61, and the second locking block 62 moves rightward and gradually cooperates with the first locking block 6 to limit the position.

[0057] After the second locking block 62 is fully limitedly engaged with the first locking block 6, the rotation of the first rotating shaft 15 will drive the second locking block 62 and the second rotating ring 61 to rotate together through the first locking block 6, and the second rotating ring 61 will drive the water pump 51 to work through the bevel gear set and the third rotating shaft 65. The water pump 51 works to pump the liquid in the liquid storage shell 5 into the water pumping pipe 52, and the subsequent liquid is sprayed out from the three groups of nozzles 55 through the water pump 51 and the second liquid guiding pipe 53. The nozzles 55 spray water mist to absorb dust in the air.

[0058] The water mist sprayed by the nozzle 55 flows through the guide plate 74 along with the air. Under the blocking effect of the guide plate 74, the water mist in the air condenses into water droplets on the surface of the guide plate 74 and flows downward. Subsequently, the water droplets flow from the circular holes on the guide plate 74 and the circular holes on the shell 1 into the liquid storage shell 5, and the water continues to flow downward through the filter screen on the first sliding frame 73.

[0059] When water continues to flow through the filter screen on the first sliding frame 73, impurities in the water gradually adhere to the filter screen of the first sliding frame 73. Since the water contains a large amount of dust impurities at this time, the filter screen on the first sliding frame 73 is gradually blocked by the dust impurities in the water. At this time, the impact of the water on the filter screen on the first sliding frame 73 is relatively large. The first sliding frame 73 moves downward under the impact of the water containing dust impurities and stretches the connected tension spring. The first sliding frame 73 moves downward so that the upper inclined groove squeezes the fourth sliding push rod 72. The fourth sliding push rod 72 is squeezed and moves to the right, and the connected spring pushes the sliding plug 71 to move to the right. The sliding plug 71 moves to the right and is inserted below the third sliding push rod 67 and the sliding ring 68. At this time, the sliding plug 71 hinders the downward movement of the third sliding push rod 67 and the sliding ring 68 until the sliding plug 71 moves to contact the side wall of the third fixed shell 66, and then the fourth sliding push rod 72 continues to move to compress the connected spring.

[0060] During the process of water spraying by the nozzle 55, the sprayed water mist absorbs and fixes a large amount of dust in the air, reducing the workload of the filter on the annular shell 13. Subsequently, the above operation is repeated on the fixing plate 16 and the fixing frame 43 to clean the impurities on the filter of the annular shell 13, thereby maintaining a relatively stable air flow rate in the shell 1, that is, the efficiency of the device in treating impurities in the air remains relatively stable.

[0061] When performing water mist dust removal operations, the humidity in the air flowing in the shell 1 will increase slightly. When the humid air flows through the exhaust fan 12, under the stirring centrifugal action of the exhaust fan 12, part of the moisture in the air condenses into water droplets on the inner wall of the exhaust fan 12. The condensed water droplets flow back into the liquid storage shell 5 through the first liquid guide pipe 121, reducing the loss of water during the water spraying and dust reduction process, thereby avoiding excessive humidity in the air in the coal mine tunnel.

[0062] In the above-mentioned water spray dust removal process, the fixed plate 16 and the fixed frame 43 repeat the above-mentioned cleaning operation at the same time, and the fixed plate 16 and the fixed frame 43 clean the impurities on the filter screen of the annular shell 13. As the impurities attached to the filter screen of the annular shell 13 decrease, the negative pressure in the right part of the shell 1 gradually recovers, but under the limiting effect of the sliding plug 71 on the third sliding push rod 67 and the sliding ring 68, the third sliding push rod 67 and the sliding ring 68 cannot be reset, that is, at this time, the first locking block 6 and the second locking block 62 still keep matching, and the three groups of spray The heads 55 continuously spray water to remove dust. At the same time, since the positions of the three nozzles 55 in each group are different in the shell 1, the three nozzles 55 in each group absorb the dust in the air in different areas of the shell 1 to improve the dust reduction effect of the water mist. When the amount of dust in the air becomes less, the water droplets condensed by the water mist sprayed by the three groups of nozzles 55 are relatively clean. Subsequently, the water flow impacts the filter screen on the first sliding frame 73. At this time, affected by the inclination of the filter screen on the first sliding frame 73, a large amount of dust impurities on the first sliding frame 73 gather toward the front.

[0063] After the dust impurities on the first sliding frame 73 are located in the front part thereof, the water sprayed out by the nozzle 55 again absorbs a small amount of dust, and the dust-absorbed water passes through the filter screen on the first sliding frame 73. At this time, the impact force of the water on the first sliding frame 73 becomes smaller, and the first sliding frame 73 moves in the reverse direction and resets under the tension of the tension spring on the first sliding frame 73. The first sliding frame 73 drives the connected parts to perform the above-mentioned reverse movement, so that the sliding plug 71 moves in the reverse direction and resets to release the limit of the third sliding push rod 67 and the sliding ring 68. Under the elastic force of the spring on the third sliding push rod 67, The third sliding push rod 67 moves downward to first cause its upper limit ring to squeeze the upper surface of the sliding ring 68. Subsequently, the third sliding push rod 67 pushes the sliding ring 68 to move downward and reset. The sliding ring 68 moves downward and causes the second locking block 62 to move in the opposite direction and reset through the connected components. The second locking block 62 is reset and disengaged from the cooperation with the first locking block 6. The second locking block 62 and the second rotating ring 61 stop rotating, that is, the water pump 51 stops working. At this time, only the screen on the annular shell 13 is used to filter the dust in the air of the coal mine tunnel. When the dust in the air becomes more, the above operation is repeated.

[0064] When the device performs dust removal operation, air flows into the housing 1, and then the air flows through the three second ducts 8. Since the mesh of the filter on the sliding frame 81 is relatively large, small dust can pass through the filter on the sliding frame 81 smoothly, while large particles of dust in the air will adhere to the filter on the sliding frame 81, causing the filter on the sliding frame 81 to gradually become blocked. After the filter on the sliding frame 81 is blocked, the air enters the second duct 8, and the air blows the sliding frame 81 backward. The movement of the sliding frame 81 drives the adjacent second sliding frame 82 to move and compress the connected spring.

[0065] When the amount of dust in the air increases, the device continues to work, allowing air to flow into the shell 1. At this time, a large amount of dust adheres to the filter screen of the annular shell 13, causing the air flow in the shell 1 to decrease, that is, the blowing force of the air on the sliding frame 81 becomes smaller. Under the elastic force of the spring connected to the sliding frame 81, the sliding frame 81 moves in the opposite direction and resets. Since the air flow rate on the left part of the shell 1 slows down, the blowing pressure of the air on the filter screen on the sliding frame 81 becomes smaller, causing the dust on the filter screen of the sliding frame 81 to fall onto the second conduit 8 and be discharged.

[0066] Since there is a lot of dust in the air at this time, the above operation will be repeated to trigger the three groups of nozzles 55 to spray water to reduce dust, and the fixed plate 16 and the fixed frame 43 will continue to work to clean the filter screen on the annular shell 13, so that the dust on the filter screen of the annular shell 13 gradually decreases, that is, the flow rate of the air in the shell 1 gradually recovers. When there are more large dust particles in the air at this time (the amount of dust in the air is large, mostly caused by operations such as construction in the tunnel, and the large particles of dust generated by the construction are floating in the air at this time), the large particles of dust accumulate On the left side of the filter screen on the sliding frame 81, the second sliding frame 82 repeats the above operation. The second sliding frame 82 moves to reduce the flow cross-section in the adjacent nozzle 55, so that the impact force of the water mist sprayed by the corresponding nozzle 55 becomes larger, thereby improving the dust reduction effect of the water mist sprayed by the nozzle 55 on large particles of dust in the air. When the amount of dust in the air decreases, the above operation is repeated to stop the three groups of nozzles 55 from spraying. After that, when the amount of dust in the air changes again, the above operation is repeated to control the flow and flow rate of the water sprayed by the nozzle 55.

[0067] In the description of the present invention, it is necessary to understand that the orientation or positional relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0069] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An air purification device for use in a coal mine, comprising a shell (1), the shell (1) being fixedly connected to two legs, a driving motor (11) being fixedly connected to one side of the shell (1) via a connecting frame, an exhaust fan (12) fixedly connected to the shell (1) being mounted on an output shaft of the driving motor (11), an outer shell of the exhaust fan (12) being fixedly connected to and in communication with a first liquid guide tube (121), the first liquid guide tube (121) penetrating the shell (1) and being fixedly connected thereto, an annular shell (13) being fixedly connected to one side of the shell (1) away from the driving motor (11), the annular shell (13) being provided with a filter screen for filtering dust in the air, the annular shell (13) being provided with two symmetrically distributed annular cavities, first rotating rings (14) being rotatably arranged in both annular cavities of the annular shell (13), a first rotating shaft (15) being fixedly connected to the rotating shaft of the exhaust fan (12), the first rotating shaft (15) penetrating the filter screen on the annular shell (13) and being rotatably connected thereto, wherein: It also includes a fixed plate (16), the fixed plate (16) being fixedly connected to an end of the first rotating shaft (15) away from the exhaust fan (12), the fixed plate (16) being provided with an air guide cavity, the fixed plate (16) being fixedly connected to the adjacent first rotating ring (14), and the air guide cavity on the fixed plate (16) being communicated with the adjacent annular cavity on the annular shell (13), the fixed plate (16) being in contact with the windward side of the filter screen on the annular shell (13), and a collecting mechanism for collecting impurities being installed on the shell (1); The collecting mechanism comprises a collecting shell (2), the collecting shell (2) being fixedly connected to the side wall of the shell (1), the collecting shell (2) being fixedly connected to and in communication with a first air guide pipe (21), the collecting shell (2) being provided with an exhaust hole, the exhaust hole of the collecting shell (2) and the first air guide pipe (21) being both provided with a one-way valve, the first air guide pipe (21) penetrating the shell (1) and being in communication with a corresponding annular cavity on the annular shell (13), the collecting shell (2) being embedded with a first fixed shell (22), the first fixed shell (22) penetrating the shell (1) and being fixedly connected thereto, the first fixed shell (22) being located inside the collecting shell (2) A filter screen is installed on one side of the first fixed shell (22); a first sliding push rod (23) is slidably arranged on the other side of the first fixed shell (22); a tension spring is installed between the first sliding push rod (23) and the first fixed shell (22); a protrusion (24) is fixedly connected to the first rotating shaft (15); the protrusion (24) is pressed and matched with the first sliding push rod (23); and a cleaning component for cleaning the filter screen thereon is arranged on the first fixed shell (22); the protrusion (24) rotates and presses the first sliding push rod (23) to move back and forth, and the fixed plate (16) inhales air so that the gas passes through the air guide cavity thereon, the first air guide pipe (21) and the collection shell (2) and enters the first fixed shell (22); The invention also comprises a recoil mechanism for cleaning the filter screen on the first rotating ring (14), the recoil mechanism being arranged on the shell (1), the recoil mechanism comprising a second fixed shell (4), the second fixed shell (4) being fixedly connected to the shell (1), the second fixed shell (4) being slidably provided with a second sliding push rod (41), a tension spring being installed between the second sliding push rod (41) and the second fixed shell (4), the second sliding push rod (41) being pressed and matched with the protrusion (24), the second sliding push rod (41) being provided with a through hole for installing a one-way valve, one end of the second fixed shell (4) being located outside the shell (1) being fixedly connected to and communicated with a second air guide pipe (42), the second air guide pipe (42) being installed with a one-way valve, the second air guide pipe (42) penetrating The shell (1) is connected to the corresponding annular cavity on the annular shell (13); the first rotating shaft (15) is fixedly connected to a fixing frame (43); the fixing frame (43) contacts and cooperates with the air outlet side of the filter screen on the annular shell (13); the fixing frame (43) is provided with an air guide cavity; the fixing frame (43) is fixedly connected to the adjacent first rotating ring (14); and the air guide cavity on the fixing frame (43) is connected to the adjacent annular cavity on the annular shell (13); during the rotation of the protrusion (24), the protrusion (24) squeezes the second sliding push rod (41) to move in the second fixed shell (4); under the tension of the tension spring on the second sliding push rod (41), the second fixed shell (4) is always in contact with the surface of the protrusion (24), so that the second sliding push rod (41) moves back and forth; The invention also comprises a spraying mechanism for uniformly spraying liquid for dust removal, the spraying mechanism being arranged on the housing (1), the spraying mechanism comprising a liquid storage shell (5), the liquid storage shell (5) being fixedly connected to the side wall of the housing (1), and the first liquid guide tube (121) being in communication with the liquid storage shell (5), the housing (1) being provided with a circular hole in communication with the liquid storage shell (5), a water pump (51) being installed on the side wall of the liquid storage shell (5), a water pumping pipe (52) being installed at the liquid inlet end of the water pump (51), and the water pumping pipe (52) being in communication with the liquid storage shell (5) The end of the water pump (52) is embedded in the bottom of the liquid storage shell (5), the liquid outlet end of the water pump (51) is installed with a second liquid guide tube (53), the air inlet side of the shell (1) is embedded with multiple groups of nozzles (55) evenly distributed, the multiple groups of nozzles (55) evenly distributed are all fixedly connected to and communicated with the second liquid guide tube (53), the first rotating shaft (15) is provided with a switching component for driving the water pump (51) to work, and the shell (1) is provided with an adjusting component for adjusting the flow cross section in all the nozzles (55); The switching assembly comprises a first locking block (6), the first locking block (6) being fixedly connected to the first rotating shaft (15), a second rotating ring (61) being rotatably provided on the first rotating shaft (15), the second rotating ring (61) being provided with a sliding cavity filled with liquid, a second locking block (62) being limitedly slidably provided in the sliding cavity of the second rotating ring (61) and cooperating with the first locking block (6), a circular ring (63) being rotatably provided on the second rotating ring (61), the second rotating ring (61) being provided with circular holes equidistantly distributed in the circumferential direction, the circular holes on the second rotating ring (61) being communicated with the sliding cavity thereon, a first conduit (64) being fixedly connected to the circular ring (63) being filled with liquid, the first conduit (64) being communicated with the adjacent circular hole on the second rotating ring (61), a third rotating shaft (65) being rotatably provided on the housing (1) and being fixedly connected to the driving shaft on the water pump (51), the third rotating shaft (65) being connected to the The second rotating ring (61) is driven by a bevel gear set. The housing (1) is embedded with a third fixed housing (66). The third fixed housing (66) is located on the side of the filter screen on the annular housing (13) where air flows out. A third sliding push rod (67) is slidably arranged in the third fixed housing (66). A spring is installed between the third sliding push rod (67) and the third fixed housing (66). A sliding ring (68) is slidably arranged in the third fixed housing (66) and is limited in sliding movement with the third sliding push rod (67). The third fixed housing (66), the third sliding push rod (67) and the sliding ring (68) cooperate to form a chamber filled with liquid. The chamber formed by the third fixed housing (66), the third sliding push rod (67) and the sliding ring (68) is communicated with the first conduit (64). The third fixed housing (66) is provided with a limiting component for limiting the reset of the third sliding push rod (67) and the sliding ring (68).

2. The air purification device for use in coal mines according to claim 1 is characterized in that: The first fixed shell (22) is located in the collecting shell (2) and is configured in a truncated cone shape on one side.

3. The air purification device for use in coal mines according to claim 1 is characterized in that: The cleaning assembly comprises a bracket (3), the bracket (3) being fixedly connected to the inside of the first fixed shell (22), the bracket (3) being rotatably provided with a second rotating shaft (31), the second rotating shaft (31) penetrating one end of the first fixed shell (22) on which a filter screen is installed and being rotatably connected thereto, one end of the second rotating shaft (31) located in the first fixed shell (22) being fixedly connected to a fan (32), the other end of the second rotating shaft (31) being fixedly connected to a symmetrical cleaning rod (33), the cleaning rod (33) being in contact with and cooperating with the filter screen on the first fixed shell (22).

4. The air purification device for use in coal mines according to claim 1 is characterized in that: Each group of the nozzles (55) includes a plurality of nozzles evenly distributed along the center line of the shell (1), and the plurality of nozzles (55) in each group gradually approach the center line of the shell (1) in the direction from the air inlet to the air outlet.

5. The air purification device for use in coal mines according to claim 1 is characterized in that: The limiting component comprises a fourth fixed shell (7), the fourth fixed shell (7) being fixedly connected to the side wall of the third fixed shell (66), a sliding plug (71) and a fourth sliding push rod (72) being slidably arranged in the fourth fixed shell (7), a spring being installed between the sliding plug (71) and the fourth sliding push rod (72), the sliding plug (71) penetrating the third fixed shell (66) and being pressed and limitedly matched with the sliding ring (68), the fourth sliding push rod (72) penetrating The liquid storage shell (5) is slidably connected thereto, a first sliding frame (73) is slidably arranged in the liquid storage shell (5), a tension spring is installed between the first sliding frame (73) and the liquid storage shell (5), the first sliding frame (73) is provided with a folded filter, the first sliding frame (73) is slidably matched with the fourth sliding push rod (72), a guide plate (74) is fixedly connected to the shell (1), and the guide plate (74) is located between the nozzle (55) and the annular shell (13).

6. The air purification device for use in coal mines according to claim 5 is characterized in that: The regulating assembly comprises second conduits (8) distributed at equal intervals, the second conduits (8) distributed at equal intervals are all fixedly connected to the inside of the housing (1), the second conduits (8) are slidably provided with a sliding frame (81), the sliding frame (81) is provided with a filter located in an adjacent second conduit (8), the mesh of the filter on the sliding frame (81) is larger than the mesh of the filter on the annular shell (13), a spring is installed between the sliding frame (81) and the adjacent second conduits (8), each group of the nozzles (55) is slidably provided with a second sliding frame (82) for changing the flow cross section therein, the second sliding frame (82) is fixedly connected to the adjacent sliding frame (81).

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