Low-concentration gas purification equipment for coal mine

Abstract

The invention belongs to the technical field of gas purification equipment, and particularly relates to coal mine low-concentration gas purification equipment which comprises a cyclone separator, the cyclone separator is installed on the ground through a support, and an exhaust pipe communicated with the interior is fixedly installed at the top of the cyclone separator. A dust collecting hopper communicated with the interior of the cyclone separator is fixedly mounted at the bottom of the cyclone separator, a filter screen is mounted at the joint of the cyclone separator and the dust collecting hopper, and an air inlet pipe communicated with the interior of the cyclone separator is fixedly mounted on one side of the cyclone separator; by means of the designed structure, the flow guiding effect on particle impurities is achieved, and therefore the situation that the particle impurities are accumulated in the middle of the dust collecting hopper, after follow-up particle impurities are accumulated too much, the interior of the dust collecting hopper is in the state that the periphery is low and the middle is high, a filter screen is blocked, and the dust collecting hopper is not full of the particle impurities is avoided. And the situation that filling is difficult to continue is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of gas purification equipment, in particular to low-concentration gas purification equipment for coal mines. Background Art

[0002] Low-concentration coal mine gas refers to gas with a methane volume fraction below 30%. Once mined, this gas is difficult to utilize directly, requiring purification to maximize its subsequent value. Gas purification begins with pre-treating the dust-laden gas through a cyclone separator. The pre-treated gas is then transported to the next purification process, completing the purification of the low-concentration gas.

[0003] When using a cyclone separator to purify and pre-treat dust-laden gas, the gas in the dust-laden gas will flow up and out of the cyclone separator under the action of the cyclone separator, while the particulate impurities in the dust-laden gas will enter the dust collecting hopper through the bottom of the cyclone separator for collection.

[0004] After a cyclone separator has been operating for a long time, a large amount of particulate impurities will accumulate in the dust hopper at the bottom. Since most dust hoppers do not have a mechanism to guide the impurities, a large amount of impurities will accumulate in the middle of the dust hopper. As the particles accumulate, they will block the discharge port of the cyclone separator. At the same time, when the discharge port discharges impurities for a long time, the particles are likely to block the holes of the discharge port, affecting the discharge operation of the cyclone separator and thus the purification operation.

[0005] To this end, the present invention provides a low-concentration gas purification device for coal mines. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the low-concentration gas purification equipment for coal mines described in the present invention includes a cyclone separator, the cyclone separator is installed on the ground through a bracket, the top of the cyclone separator is fixedly installed with an exhaust pipe connected to the interior, the bottom of the cyclone separator is fixedly installed with a dust collecting hopper connected to the interior, a filter is installed at the connection between the cyclone separator and the dust collecting hopper, and one side of the cyclone separator is fixedly installed with an air intake pipe connected to the interior; a guide mechanism is provided in the dust collecting hopper, the guide mechanism includes an electric push rod fixedly installed in the dust collecting hopper, the output rod end of the electric push rod is fixedly installed with a bottom plate, the top of the bottom plate is fixedly installed with a triangular guide block, the top of the guide block is provided with a rounded corner, the rounded corner of the top of the guide block is made of flexible material, and the top of the guide block is provided with a plurality of guide holes that pass through itself and penetrate the bottom plate.

[0008] Furthermore, a multi-stage protection tube is fixedly installed on the output end of the electric push rod, and one end of the multi-stage protection tube away from the electric push rod is fixedly connected to the base plate. The multi-stage protection tube is composed of several hollow round tubes slidably connected.

[0009] Furthermore, a dredging mechanism is provided on both sides of the bottom plate, and the dredging mechanism includes a number of fixed tubes fixedly installed on both sides of the bottom plate, and a receiving groove is provided on the top of the fixed tube. The interior of the receiving groove is slidably connected to the top plate through an elastic part, and the interior of the receiving groove is movably connected to the impact ball, and one side of the top plate is in contact with the impact ball.

[0010] Furthermore, an auxiliary component is provided inside the guide block, and the auxiliary component includes a plurality of cavities opened in the guide block and connected to the inside of the guide hole. The interior of the cavity is sealed and slidably connected with an auxiliary rod, and the auxiliary rod is conical; the elastic part is a hollow elastic ball, and a connecting pipe connected to the inside is fixedly installed at the bottom of the elastic part, and the end of the connecting pipe away from the elastic part is connected to the inside of the cavity.

[0011] Furthermore, a stirring mechanism is provided in the dust collecting hopper, and the stirring mechanism includes a fixed cylinder fixedly installed in the dust collecting hopper, the interior of the fixed cylinder is sealed and slidably connected with a sealing disk, a sliding rod passing through the fixed cylinder is fixedly installed on one side of the sealing disk, and a plurality of stirring plates are provided at the end of the sliding rod away from the sealing disk; the multi-stage protective tube is composed of a plurality of hollow circular tubes sealed and slidably connected, and the plurality of circular tubes are connected by through holes, and an air guide tube connected to the interior is fixedly installed at the bottom of the multi-stage protective tube, and the end of the air guide tube away from the multi-stage protective tube is connected to the interior of the fixed cylinder.

[0012] Furthermore, a movable component is provided at one end of the sliding rod away from the sealing disk, and the movable component includes a rectangular frame fixedly connected to the sliding rod, and a plurality of rectangular grooves are opened on one side of the rectangular frame. The interior of the rectangular groove is connected with a rectangular block through a spring sliding connection, and one side of the stirring plate is fixedly connected to the rectangular block.

[0013] Furthermore, a rolling column made of rubber material is fixedly installed on the bottom of the stirring plate, and a plurality of semicircular bosses are fixedly installed inside the dust collecting hopper.

[0014] Furthermore, a dust suppression mechanism is provided in the dust collecting hopper, and the dust suppression mechanism includes a water tank fixedly installed in the dust collecting hopper, water outlet pipes with a one-way valve are fixedly installed on both sides of the water tank, and a water inlet pipe connected to the interior and with a one-way valve is fixedly installed on the top of the water tank.

[0015] Furthermore, two symmetrically arranged "L"-shaped connecting pipes are fixedly installed in the dust collecting hopper, and a plurality of liquid outlet holes connected to the interior are opened on one side of the connecting pipe. A protective net is fixedly installed in the liquid outlet hole, and the end of the water outlet pipe away from the water tank is connected to the interior of the connecting pipe.

[0016] Furthermore, a plurality of inclined extrusion plates are fixedly mounted on a side of the bottom plate away from the electric push rod.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The low-concentration gas purification equipment for coal mines described in the present invention starts the electric push rod in the dust hopper, so that the output rod of the electric push rod moves with the bottom plate and guide block to the bottom of the filter. Most of the particulate impurities are guided to both sides by the triangular guide blocks, while a small part of the particulate impurities pass through the guide blocks and the bottom plate through a number of guide holes and fall into the dust hopper. When the electric push rod moves toward the filter with the guide block, it will use the rounded corners of the flexible material on the top of the guide block to contact the filter, thereby generating impact vibration on the filter, achieving the effect of pre-clearing the filter and reducing the effect of particulate impurities clogging the filter. By installing a multi-stage protective tube, the output rod of the electric push rod is protected, and particulate impurities are reduced from adhering to the output rod, causing damage to the subsequent sliding of the output rod, thereby increasing the service life of the electric push rod. The designed structure guides the flow of particulate matter, preventing it from accumulating in the middle of the dust hopper. This could lead to excessive accumulation of impurities, resulting in the dust hopper becoming low on the outside and high in the middle, which could clog the filter and make it difficult to refill the hopper even when it's not fully filled. The efficient flow-guiding design allows impurities to flow more easily into the dust hopper, allowing gas to be discharged more efficiently through the exhaust pipe. This improves the purification efficiency of the dust-laden gas and allows for more efficient production of the desired gas.

[0019] 2. The low-concentration gas purification equipment for coal mines disclosed herein utilizes an impact ball, driven by an elastic member and a top plate, to move into and impact the meshes of a filter, thereby assisting in the impact and vibration of the filter. As an electric push rod slowly moves with a fixed tube, the impact ball is squeezed and then slides and retracts into a receiving slot, freeing the meshes of the filter. As the electric push rod continues to move, the impact ball impacts and squeezes into the next mesh of the filter, causing further impact and vibration. The impact ball continuously repeats this operation, vibrating and unclogging the meshes of the filter, preventing clogging of the meshes by particulate matter, thereby effectively filtering out particulate matter and assisting in the purification of dust-laden gas. The electric push rod, which moves the fixed tube and impact ball, repeats this operation. As the impact ball slides and retracts into the receiving slot, it compresses the elastic member within, allowing gas within the elastic member to enter the cavity through the connecting tube, thereby pushing the auxiliary rod in the cavity out of the guide hole. This reciprocating operation assists in unclogging the guide hole, effectively preventing clogging of the guide block.

[0020] 3. The low-concentration gas purification equipment for coal mines described herein utilizes an electric push rod to slide and retract a multi-stage protective tube, allowing gas within the tube to enter a fixed tube through a gas duct. Once inside the fixed tube, the gas pushes a sealing disk to move. This movement, in turn, moves the rectangular frame and agitating plate along with the sliding rod. By providing a plurality of agitating plates and bosses, the agitating plates can be reciprocated up and down within a dust hopper containing particulate matter, thereby shaking the particulate matter within the hopper, reducing the gaps between the particles, and storing a greater amount of particulate matter. This increased storage reduces the need for dust hopper replacement, allowing the cyclone separator to operate more efficiently and effectively for longer periods of time, achieving efficient separation of dust-laden gas and facilitating subsequent gas purification. When the electric push rod moves the multi-stage protective tube toward the filter, gas within the fixed tube is drawn back into the tube, and the sealing disk within the fixed tube, along with the sliding rod, agitating plates, and rectangular frame, returns to its original position for the next use.

[0021] 4. The low-concentration gas purification equipment for coal mines described in the present invention uses an electric push rod to move the extrusion plate toward the water tank and squeeze it. The water tank will be deformed after being squeezed. At this time, the water pre-stored inside enters the connecting pipe through the outlet pipe, and is evenly sprayed into the dust collecting hopper through several liquid outlet holes in the connecting pipe to suppress dust. This effectively prevents particulate impurities from flying and forming dust. Installing a protective net in the liquid outlet hole can effectively slow down the water flow in the liquid outlet hole near the outlet pipe, thereby allowing more water to flow to subsequent liquid outlet holes. The protective net installed at the same time can reduce the occurrence of particulate impurities entering the liquid outlet hole and causing blockage. The extrusion plate is designed to be tilted in order to better squeeze the water tank. At the same time, the extrusion plate will not completely squeeze the water tank, leaving a certain space for the water tank to deform, thereby protecting the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the cyclone separator in the present invention;

[0024] Figure 2 It is a structural diagram of the filter screen in the present invention;

[0025] Figure 3 It is a schematic cross-sectional view of the dust collecting hopper of the present invention;

[0026] Figure 4 It is a schematic cross-sectional view of the multi-stage protection tube of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the bottom plate of the present invention;

[0028] Figure 6 It is a schematic cross-sectional structural diagram of the guide block in the present invention;

[0029] Figure 7 It is a partial cross-sectional structural schematic diagram of the fixed tube in the present invention;

[0030] Figure 8 It is a schematic cross-sectional structural diagram of the fixed cylinder in the present invention;

[0031] Figure 9 1 is a schematic diagram of the structure of the stirring plate in the present invention when viewed from above;

[0032] Figure 10 It is a schematic diagram of the local structure of the connecting pipe in the present invention.

[0033] In the figure: 1. Cyclone separator; 2. Bracket; 3. Exhaust pipe; 4. Dust hopper; 5. Filter; 6. Inlet pipe;

[0034] 10. Guide mechanism; 11. Electric push rod; 12. Base plate; 13. Guide block; 14. Guide hole; 15. Rounded corner;

[0035] 20. Multi-level protection tube;

[0036] 30. Dredging mechanism; 31. Fixing tube; 32. Storage slot; 33. Elastic member; 34. Top plate; 35. Impact ball;

[0037] 36. Auxiliary assembly; 361. Connecting pipe; 362. Cavity; 363. Auxiliary rod;

[0038] 40. Stirring mechanism; 41. Fixed cylinder; 42. Sealing disk; 43. Sliding rod; 44. Stirring plate; 45. Air guide tube; 46. Through hole;

[0039] 47. Movable assembly; 471. Rectangular frame; 472. Rectangular slot; 473. Rectangular block; 474. Spring; 475. Rolling column; 476. Boss;

[0040] 50. Dust suppression mechanism; 51. Water tank; 52. Water outlet pipe; 53. Connecting pipe; 54. Liquid outlet hole; 55. Protective net; 56. Extrusion plate. DETAILED DESCRIPTION

[0041] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0042] like Figures 1 to 10 As shown, a low-concentration gas purification equipment for coal mines described in an embodiment of the present invention includes a cyclone separator 1, which is installed on the ground through a bracket 2, an exhaust pipe 3 connected to the interior is fixedly installed on the top of the cyclone separator 1, a dust collecting hopper 4 connected to the interior is fixedly installed on the bottom of the cyclone separator 1, a filter 5 is installed at the connection between the cyclone separator 1 and the dust collecting hopper 4, and an air inlet pipe 6 connected to the interior is fixedly installed on one side of the cyclone separator 1.

[0043] Specifically, a guide mechanism 10 is provided in the dust hopper 4. The guide mechanism 10 includes an electric push rod 11 fixedly mounted in the dust hopper 4. The output rod end of the electric push rod 11 is fixedly mounted with a base plate 12. A triangular guide block 13 is fixedly mounted on the top of the base plate 12. The top of the guide block 13 is provided with a rounded corner 15. The rounded corner 15 at the top of the guide block 13 is made of a flexible material. The top of the guide block 13 is provided with a plurality of guide holes 14 that pass through the guide block and penetrate the base plate 12. A multi-stage protective tube 20 is fixedly mounted on the output end of the electric push rod 11. The end of the multi-stage protective tube 20 away from the electric push rod 11 is fixedly connected to the base plate 12. The multi-stage protective tube 20 is composed of a plurality of hollow circular tubes slidably connected.

[0044] During operation, dust-laden gas enters the cyclone separator 1 through the air inlet pipe 6, and the gas is then discharged through the exhaust pipe 3 of the cyclone separator 1 (the cyclone separator 1 is an existing device, and its specific working principle is prior art and has been made public, so it will not be described in detail here), while particulate impurities enter the dust hopper 4 through the filter 5 for collection. Before using the cyclone separator 1, the electric push rod 11 in the dust hopper 4 is started, and the output rod of the electric push rod 11 moves with the bottom plate 12 and the guide block 13 to the bottom of the filter 5. At this time, the impurities dropped from the cyclone separator 1 come into contact with the triangular guide block 13 through the filter 5. Most of the particulate impurities are guided to both sides by the triangular guide block 13, while a small number of particulate impurities pass through the guide block 13 and the bottom plate 12 through a number of guide holes 14 and fall into the dust hopper 4. When the electric push rod 11 moves toward the filter 5 with the guide block 13, the flexible rounded corner 15 on the top of the guide block 13 contacts the filter 5, thereby generating an impact vibration on the filter 5, thereby pre-clearing the filter 5 and reducing the blockage of the filter 5 by particulate impurities. The installation of the multi-stage protection tube 20 protects the output rod of the electric push rod 11, reduces the adhesion of particulate impurities to the output rod, and reduces the damage caused by the subsequent sliding of the output rod, thereby increasing the service life of the electric push rod 11.

[0045] The structure of the above design achieves the function of guiding the impurities, thereby preventing the impurities from accumulating in the middle of the dust hopper 4. This would cause the dust hopper 4 to be low on the outside and high in the middle after excessive accumulation of impurities, thereby clogging the filter 5 and making it difficult to fill the dust hopper 4 when it is not full of impurities. The efficient guiding design allows the impurities to enter the dust hopper 4 more effectively, allowing the gas to be discharged through the exhaust pipe 3 more effectively, thereby improving the purification efficiency of the dust-laden gas and more efficiently obtaining the required gas.

[0046] A dredging mechanism 30 is provided on both sides of the base plate 12. The dredging mechanism 30 includes several fixed tubes 31 fixedly installed on both sides of the base plate 12. A receiving groove 32 is provided on the top of the fixed tube 31. The interior of the receiving groove 32 is slidably connected to a top plate 34 through an elastic member 33. The interior of the receiving groove 32 is movably connected to an impact ball 35, and one side of the top plate 34 is in contact with the impact ball 35.

[0047] Specifically, the guide block 13 is internally provided with an auxiliary assembly 36. This assembly comprises several cavities 362 defined within the guide block 13 and communicating with the interior of the guide hole 14. Conical auxiliary rods 363 are sealingly and slidably connected to the interiors of these cavities 362. The elastic member 33 is a hollow elastic ball, with a connecting tube 361 fixedly mounted at its bottom, communicating with the interior. The end of the connecting tube 361, distal from the elastic member 33, communicates with the interiors of the cavities 362.

[0048] During operation, when the electric push rod 11 moves with the base plate 12 and guide block 13, the fixed tube 31 will move with the base plate 12. When the fixed tube 31 moves with the impact ball 35 below the filter 5, the impact ball 35 is no longer restricted by the top wall of the dust hopper 4. Under the action of the elastic member 33 and the top plate 34, the impact ball 35 moves into the mesh of the filter 5 and impacts it, thereby assisting in the impact and vibration of the filter 5. As the electric push rod 11 slowly moves with the fixed tube 31, the impact ball 35 is squeezed and slides into the receiving groove 32, thereby disengaging from the mesh of the filter 5. As the electric push rod 11 continues to move, the impact ball 35 will impact and squeeze into the next mesh of the filter 5, achieving another impact and vibration. Since there are several holes in the filter 5, when the electric push rod 11 moves to the appropriate position, the several impact balls 35 will continuously reciprocate the above operation, thereby vibrating and clearing the holes of the filter 5, preventing the holes of the filter 5 from being blocked by particulate impurities, and then efficiently filtering out the particulate impurities, thereby assisting in the purification of dust-laden gas.

[0049] After the guide block 13 has been guiding the particulate impurities for a long time, there are likely to be residual particulate impurities in the guide block 13, or the guide block 13 may be blocked by the particulate impurities. At this time, the electric push rod 11 is started again, so that the electric push rod 11 moves with the fixed tube 31 and the impact ball 35, and the impact ball 35 performs the above operation reciprocally. When the impact ball 35 slides and contracts into the storage groove 32, it squeezes the elastic part 33 inside, so that the gas in the elastic part 33 enters the cavity 362 through the connecting tube 361, thereby pushing the auxiliary rod 363 in the cavity 362 to slide out of the guide hole 14. As the impact ball 35 is squeezed again, the elastic part 33 returns to its original position with the top plate 34 and the impact ball 35. At this time, the gas in the cavity 362 is sucked back into the elastic part 33, and the auxiliary rod 363 also slides back to the cavity 362, so as not to affect the flowability of the guide hole 14. By reciprocating the above operation, the function of assisting in unblocking the guide hole 14 is achieved, and the blockage of the guide block 13 is effectively avoided.

[0050] The dust hopper 4 is provided with an agitation mechanism 40, which comprises a fixed cylinder 41 fixedly mounted therein. A sealing disc 42 is sealingly and slidably connected to the interior of the fixed cylinder 41. A sliding rod 43, which passes through the fixed cylinder 41, is fixedly mounted on one side of the sealing disc 42. A plurality of agitation plates 44 are provided on the end of the sliding rod 43 away from the sealing disc 42. The multi-stage protective tube 20 is composed of a plurality of hollow circular tubes that are sealingly and slidably connected, and the plurality of circular tubes are interconnected via through-holes 46. An air duct 45 is fixedly mounted at the bottom of the multi-stage protective tube 20, communicating with the interior thereof. The end of the air duct 45 away from the multi-stage protective tube 20 communicates with the interior of the fixed cylinder 41.

[0051] Specifically, a movable assembly 47 is provided at the end of the slide rod 43 away from the sealing disk 42. The movable assembly 47 includes a rectangular frame 471 fixedly connected to the slide rod 43. A plurality of rectangular slots 472 are defined on one side of the rectangular frame 471. Rectangular blocks 473 are slidably connected to the interior of the rectangular slots 472 via springs 474. A surface of the stirring plate 44 is fixedly connected to the rectangular block 473. A rubber rolling post 475 is fixedly mounted on the bottom of the stirring plate 44, and a plurality of semicircular bosses 476 are fixedly mounted on the interior of the dust hopper 4.

[0052] During operation, when the dust hopper 4 is filled with a certain amount of particulate matter, the electric push rod 11 is activated, causing it to slide and retract with the multi-stage protective tube 20, thereby squeezing the gas within the multi-stage protective tube 20 and allowing it to enter the fixed cylinder 41 through the air guide 45. Once inside the fixed cylinder 41, the gas pushes the sealing disk 42 to move. This movement, in turn, moves the rectangular frame 471 and the stirring plate 44 via the slide rod 43. As the stirring plate 44 moves, the rolling pins 475 at its bottom contact the semicircular boss 476 within the dust hopper 4. The boss 476, via the rolling pins 475, lifts the stirring plate 44, forcing it to slide upward within the rectangular slot 472 via the rectangular block 473 and spring 474. As the rolling pins 475 clear the boss 476, the stirring plate 44, the rectangular block 473, and the rolling pins 475 slide back to their original position under the action of the spring 474. By providing a plurality of agitating plates 44 and bosses 476, the agitating plates 44 reciprocate up and down within the dust hopper 4 containing particulate matter, thereby shaking and settling the particulate matter in the dust hopper 4, reducing the gaps between the particulate matter, and achieving a greater storage capacity of particulate matter. When the electric push rod 11 moves toward the filter 5 with the multi-stage protective tube 20, the gas within the fixed cylinder 41 is drawn back into the multi-stage protective tube 20, and the sealing disk 42 within the fixed cylinder 41 returns to its original position, along with the sliding rod 43, agitating plates 44, and rectangular frame 471, for the next use.

[0053] A dust suppression mechanism 50 is provided within the dust hopper 4. The dust suppression mechanism 50 comprises a water tank 51 fixedly mounted within the dust hopper 4. Water outlet pipes 52 with one-way valves are fixedly mounted on both sides of the water tank 51. A water inlet pipe connected to the interior and having a one-way valve is fixedly mounted on the top of the water tank 51. Two symmetrically arranged, L-shaped connecting pipes 53 are fixedly mounted within the dust hopper 4. One side of the connecting pipes 53 is provided with a plurality of liquid outlet holes 54 connected to the interior. A protective net 55 is fixedly mounted within the liquid outlet holes 54. The end of the water outlet pipe 52 away from the water tank 51 is connected to the interior of the connecting pipe 53. Several inclined extrusion plates 56 are fixedly mounted on the side of the bottom plate 12 away from the electric push rod 11.

[0054] During operation, when a certain amount of particulate matter accumulates in the dust hopper 4 and continues to flow into it, a large amount of particulate matter generates dust. At this point, the electric push rod 11 is activated, causing it to move and squeeze the extrusion plate 56 toward the water tank 51. This squeezing deforms the water tank 51, causing the pre-stored water inside to flow through the outlet pipe 52 into the connecting pipe 53 and evenly sprayed into the dust hopper 4 through the plurality of liquid outlet holes 54 within the connecting pipe 53 to suppress dust. This effectively prevents particulate matter from becoming airborne and forming dust.

[0055] By installing a protective net 55 inside the liquid outlet 54, the outflow of water from the liquid outlet 54 near the outlet pipe 52 can be effectively slowed, allowing more water to flow to subsequent liquid outlets 54. The protective net 55 also reduces the risk of particulate matter entering the liquid outlet 54 and causing blockage. The tilted design of the extrusion plate 56 allows for better squeezing of the water tank 51. At the same time, the extrusion plate 56 does not completely squeeze the water tank 51, leaving room for deformation and protecting the water tank 51.

[0056] Working Principle: Dust-laden gas enters the cyclone separator 1 through the inlet pipe 6 and is discharged through the cyclone separator's exhaust pipe 3. Particulate matter passes through the filter 5 and enters the dust hopper 4 for collection. Before the cyclone separator 1 is used, the electric push rod 11 in the dust hopper 4 is activated, causing the output rod of the push rod 11 to move with the base plate 12 and guide block 13 to the bottom of the filter 5. At this point, impurities that fall from the cyclone separator 1 pass through the filter 5 and come into contact with the triangular guide block 13. Most of the particulate matter is guided to the sides by the triangular guide block 13, while a smaller portion passes through the guide block 13 and base plate 12 through several guide holes 14 and falls into the dust hopper 4. As the push rod 11 moves with the guide block 13 toward the filter 5, the flexible rounded corner 15 on the top of the guide block 13 contacts the filter 5, causing impact vibrations to the filter 5, pre-clearing the filter 5 and preventing particulate matter from clogging it. The multi-stage protection tube 20 is installed to protect the output rod of the electric push rod 11, thereby reducing the adhesion of particulate impurities on the output rod and damaging the subsequent sliding of the output rod, thereby increasing the service life of the electric push rod 11.

[0057] As the electric push rod 11, carrying the base plate 12 and guide block 13, moves, the fixed tube 31 follows the movement of the base plate 12. When the fixed tube 31, carrying the impact ball 35, reaches below the filter 5, the impact ball 35 is no longer constrained by the inner wall of the dust hopper 4. Driven by the elastic member 33 and the top plate 34, the impact ball 35 moves into the mesh of the filter 5 and strikes it, thereby assisting in the impact and vibration of the filter 5. As the electric push rod 11 slowly moves with the fixed tube 31, the impact ball 35 is squeezed and slides and retracts into the receiving slot 32, thereby disengaging the mesh of the filter 5. As the electric push rod 11 continues to move, the impact ball 35 strikes and squeezes into the next mesh of the filter 5, causing further impact and vibration. After the guide block 13 has been guiding particulate matter for a long time, it is prone to residual particulate matter or becoming clogged with particulate matter. At this point, the electric push rod 11 is activated again, causing it to move with the fixed tube 31 and the impact ball 35, and the impact ball 35 repeats this operation. As the impact ball 35 slides and contracts into the receiving groove 32, it squeezes the elastic member 33 inside, causing the gas in the elastic member 33 to enter the cavity 362 through the connecting tube 361, thereby pushing the auxiliary rod 363 in the cavity 362 to slide out of the guide hole 14. As the impact ball 35 is squeezed again, the elastic member 33, along with the top plate 34 and the impact ball 35, returns to its original position. At this time, the gas in the cavity 362 is sucked back into the elastic member 33, and the auxiliary rod 363 also slides back into the cavity 362, thereby not affecting the flow of the guide hole 14.

[0058] When the dust hopper 4 is filled with a certain amount of particulate matter, the electric push rod 11 is activated, causing it to slide and retract with the multi-stage protective tube 20, squeezing the gas within the multi-stage protective tube 20 and allowing it to enter the fixed cylinder 41 through the air guide 45. Once inside the fixed cylinder 41, the gas pushes the sealing disk 42 to move. This movement, in turn, moves the rectangular frame 471 and the stirring plate 44 via the slide rod 43. As the stirring plate 44 moves, the rolling pins 475 at its bottom contact the semicircular boss 476 within the dust hopper 4. The boss 476, via the rolling pins 475, lifts the stirring plate 44, forcing it to slide upward within the rectangular slot 472 via the rectangular block 473 and spring 474. As the rolling pins 475 clear the boss 476, the stirring plate 44, the rectangular block 473, and the rolling pins 475 slide back to their original position under the action of the spring 474.

[0059] When a certain amount of particulate impurities accumulates in the dust hopper 4 and as subsequent particulate impurities continue to flow into the dust hopper 4, a large amount of particulate impurities will generate dust. At this time, the electric push rod 11 is activated, causing the electric push rod 11 to move and squeeze the squeezing plate 56 toward the water tank 51. The water tank 51 is deformed by the squeezing, and the water stored in the water tank 51 flows into the connecting pipe 53 through the water outlet pipe 52 and is evenly sprayed into the dust hopper 4 through the plurality of liquid outlet holes 54 in the connecting pipe 53 to suppress dust.

[0060] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-concentration gas purification device for coal mines, comprising a cyclone separator (1), the cyclone separator (1) being mounted on the ground via a bracket (2), an exhaust pipe (3) being fixedly mounted on the top of the cyclone separator (1) and communicating with the interior, a dust collecting hopper (4) being fixedly mounted on the bottom of the cyclone separator (1) and communicating with the interior, a filter screen (5) being mounted at the connection between the cyclone separator (1) and the dust collecting hopper (4), and an air inlet pipe (6) being fixedly mounted on one side of the cyclone separator (1); Its characteristics are: A guide mechanism (10) is provided in the dust collecting hopper (4), and the guide mechanism (10) comprises an electric push rod (11) fixedly installed in the dust collecting hopper (4), an output rod end of the electric push rod (11) is fixedly installed with a base plate (12), a triangular guide block (13) is fixedly installed on the top of the base plate (12), a rounded corner (15) is provided on the top of the guide block (13), and the rounded corner (15) on the top of the guide block (13) is made of a flexible material, and a plurality of guide holes (14) are provided on the top of the guide block (13) that penetrate the guide block and the base plate (12).

2. The low-concentration gas purification equipment for coal mines according to claim 1, characterized in that: A multi-stage protective tube (20) is fixedly mounted on the output end of the electric push rod (11); one end of the multi-stage protective tube (20) away from the electric push rod (11) is fixedly connected to the base plate (12); and the multi-stage protective tube (20) is composed of a plurality of hollow circular tubes that are slidably connected.

3. The low-concentration gas purification equipment for coal mines according to claim 1, characterized in that: A dredging mechanism (30) is provided on both sides of the bottom plate (12), and the dredging mechanism (30) includes a plurality of fixed tubes (31) fixedly installed on both sides of the bottom plate (12). A receiving groove (32) is provided on the top of the fixed tube (31). The interior of the receiving groove (32) is slidably connected to a top plate (34) through an elastic member (33). The interior of the receiving groove (32) is movably connected to an impact ball (35), and one side of the top plate (34) is in contact with the impact ball (35).

4. The low-concentration gas purification equipment for coal mines according to claim 3, characterized in that: An auxiliary component (36) is provided inside the guide block (13), and the auxiliary component (36) includes a plurality of cavities (362) opened in the guide block (13) and connected to the inside of the guide hole (14). An auxiliary rod (363) is sealingly and slidably connected inside the cavity (362), and the auxiliary rod (363) is tapered. The elastic member (33) is a hollow elastic ball. A connecting pipe (361) communicating with the interior is fixedly installed at the bottom of the elastic member (33). One end of the connecting pipe (361) away from the elastic member (33) is communicated with the interior of the cavity (362).

5. The low-concentration gas purification equipment for coal mines according to claim 2, characterized in that: The dust collecting hopper (4) is provided with a stirring mechanism (40), the stirring mechanism (40) comprising a fixed cylinder (41) fixedly mounted in the dust collecting hopper (4), the interior of the fixed cylinder (41) being sealingly and slidingly connected to a sealing disk (42), a sliding rod (43) passing through the fixed cylinder (41) being fixedly mounted on one side of the sealing disk (42), and a plurality of stirring plates (44) being provided at one end of the sliding rod (43) away from the sealing disk (42); The multi-stage protection tube (20) is composed of a plurality of hollow circular tubes that are sealed and slidably connected, and the plurality of circular tubes are connected through through holes (46). An air guide tube (45) connected to the interior is fixedly installed at the bottom of the multi-stage protection tube (20), and one end of the air guide tube (45) away from the multi-stage protection tube (20) is connected to the interior of the fixed tube (41).

6. The low-concentration gas purification equipment for coal mines according to claim 5, characterized in that: A movable component (47) is provided at one end of the slide rod (43) away from the sealing disk (42), and the movable component (47) includes a rectangular frame (471) fixedly connected to the slide rod (43), and a plurality of rectangular grooves (472) are provided on one side of the rectangular frame (471). A rectangular block (473) is slidably connected to the inside of the rectangular groove (472) via a spring (474), and one side of the stirring plate (44) is fixedly connected to the rectangular block (473).

7. The low-concentration gas purification equipment for coal mines according to claim 6, characterized in that: A rolling column (475) made of rubber material is fixedly installed on the bottom of the stirring plate (44), and a plurality of semicircular bosses (476) are fixedly installed inside the dust collecting hopper (4).

8. The low-concentration gas purification equipment for coal mines according to claim 1, characterized in that: A dust suppression mechanism (50) is provided in the dust collecting hopper (4), and the dust suppression mechanism (50) comprises a water tank (51) fixedly installed in the dust collecting hopper (4), water outlet pipes (52) with a one-way valve are fixedly installed on both sides of the water tank (51), and a water inlet pipe connected to the interior and having a one-way valve is fixedly installed on the top of the water tank (51).

9. The low-concentration gas purification equipment for coal mines according to claim 8, characterized in that: Two symmetrically arranged L-shaped connecting pipes (53) are fixedly installed in the dust collecting hopper (4). A plurality of liquid outlet holes (54) communicating with the interior are opened on one side of the connecting pipe (53). A protective net (55) is fixedly installed in the liquid outlet hole (54). One end of the water outlet pipe (52) away from the water tank (51) is connected to the interior of the connecting pipe (53).

10. The low-concentration gas purification equipment for coal mines according to claim 9, characterized in that: A plurality of inclined extrusion plates (56) are fixedly mounted on a side of the bottom plate (12) away from the electric push rod (11).

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