A dust absorption and purification treatment device and method for tunnel construction

Abstract

The present invention provides a dust absorption and purification treatment device for tunnel construction, comprising an air pump, the input end of the air pump extracts dusty air in the tunnel through an air inlet pipe, the output end of the air pump is connected to a first butt joint pipe, comprising a first water tank arranged on a base, a purification pipe rotatably arranged in the first water tank, a filter bag arranged in the purification pipe, the bag opening of the filter bag is coaxially fixedly connected with the middle part of the inner cavity of the purification pipe; a first butt joint pipe and a second butt joint pipe are symmetrically arranged in the first water tank, the first butt joint sleeve and the second butt joint sleeve are driven in opposite directions to be respectively sleeved on the two ends of the purification pipe, so that the first butt joint pipe, the purification pipe and the second butt joint pipe are connected; a through hole is radially arranged on the first butt joint sleeve, and a first one-way valve is arranged on the through hole; the present invention solves the problems of poor dust removal effect in the existing filtering and dust removal device, fine dust still exists in the discharged air, and the filtered dust is easy to be re-entrained during collection, which affects the health of the workers.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal in tunnel construction, and in particular to a device and method for absorbing and purifying dust for tunnel construction. Background Art

[0002] The dust generated during tunnel construction not only threatens the health of construction workers, but also may pollute the environment. Therefore, taking effective dust removal measures is crucial to protecting the health of construction workers, improving construction efficiency and protecting the environment.

[0003] Existing dust removal methods are mostly carried out through dust removal vehicles and mixed ventilation. The extracted dusty air is either discharged out of the hole or filtered through a bag filter for dust removal. In most cases, air containing dust is not allowed to be discharged directly, especially dust containing some harmful minerals, because it is easy to cause environmental pollution or affect other surrounding human activity areas. The existing filtering dust removal device has poor dust removal effect, and there is still fine dust in the exhausted air. At the same time, the filtered dust is prone to secondary dust when collected, affecting the health of the staff. Summary of the invention

[0004] The purpose of the present invention is to provide a dust absorption and purification treatment device and method for tunnel construction, which solves the problems of poor dust removal effect of existing filtering and dust removal devices, the presence of fine dust in the exhausted air, and the easy re-entrainment of filtered dust during collection, which affects the health of workers.

[0005] The embodiment of the present invention is realized by the following technical scheme: a dust absorption and purification treatment device for tunnel construction, comprising an air pump, the input end of the air pump extracts dusty air in the tunnel through an air inlet pipe, the output end of the air pump is connected to an air outlet pipe, comprising a first water tank arranged on a base, a purification pipe is rotatably arranged in the first water tank, a filter bag is arranged in the purification pipe, and the bag opening of the filter bag is coaxially fixedly connected with the middle part of the inner cavity of the purification pipe;

[0006] A first butt joint pipe and a second butt joint pipe are symmetrically arranged in the first water tank, and the first butt joint pipe and the second butt joint pipe are symmetrically arranged at two ends of the purification pipe. A first butt joint sleeve is slidably arranged on the first butt joint pipe, and a second butt joint sleeve is arranged on the second butt joint pipe. When the first butt joint pipe, the purification pipe and the second butt joint pipe are coaxial, the first butt joint sleeve and the second butt joint sleeve are driven in opposite directions to be respectively sleeved on two ends of the purification pipe, so that the first butt joint pipe, the purification pipe and the second butt joint pipe are connected;

[0007] The first butt joint is connected to the air outlet pipe, and the second butt joint is connected to the feed end of the mud pump;

[0008] The first butt sleeve is provided with a through hole in the radial direction, and the through hole is provided with a first one-way valve.

[0009] Furthermore, two cleaning tubes are coaxially and rotatably arranged in the purification tube, the two cleaning tubes are symmetrically arranged in the purification tube, and a plurality of first brushes are arranged in an array on the inner walls of the two cleaning tubes;

[0010] A cleaning rod is arranged in the cleaning tube, the bag body of the filter bag is placed in the cleaning tube, the cleaning rod is in gap fit with the bag bottom of the filter bag, and a plurality of second brushes are arranged in an array on one side of the cleaning rod close to the filter bag;

[0011] A turbofan is also arranged in the cleaning pipe, and the turbofan is located at a side of the cleaning rod away from the filter bag.

[0012] Furthermore, a first driving device and a second driving device are symmetrically arranged on the base, and the first driving device and the second driving device have the same structure;

[0013] The first driving device comprises a driving seat, a driving rod, a guide rod, a first reciprocating screw and a bevel gear, the first butt joint tube, the driving rod, the guide rod and the first reciprocating screw are arranged in parallel, the guide rod is arranged on the base, the first reciprocating screw is rotatably arranged on the base, the driving seat is slidably arranged on the guide rod, and the driving seat is threadedly matched with the first reciprocating screw;

[0014] A plurality of driving rods are arranged on the driving seat, and the driving rod of the first driving device is connected to the first docking sleeve after sliding into the first water tank; the driving rod of the second driving device is connected to the second docking sleeve after sliding into the first water tank;

[0015] The bevel gear is arranged on the first reciprocating screw rod, a driving disc is rotatably arranged on the base, the driving disc is located below the first water tank, driving bevel teeth are arranged on the driving disc, and the bevel gear is meshed with the driving bevel teeth;

[0016] A first reducer is arranged on the base, and an output end of the first reducer is drivingly connected to the driving disc.

[0017] Furthermore, a rotating shaft is rotatably arranged in the first water tank, the rotating shaft is connected to the middle part of the purification pipe, and the rotating shaft is vertically passed through the first water tank and is sleeved with a driven gear;

[0018] The first water tank bottom plate is rotatably provided with a driving gear, and the driving gear is meshed with the driven gear;

[0019] The driven gear is coaxially arranged with the driving disc, and two sections of incomplete racks are symmetrically arranged on the driving disc, and the incomplete racks are meshed with the driving gear. When one section of the incomplete rack drives the driving gear to rotate, the driven gear rotates half a circle;

[0020] The driving bevel gear comprises a first driving part and a second driving part, the first driving part and the second driving part have the same structure and are symmetrically arranged on the driving disk, the first driving part comprises a first incomplete bevel gear and a second incomplete bevel gear arranged at intervals, and the incomplete rack is located between the first incomplete bevel gear and the second incomplete bevel gear;

[0021] When the first incomplete bevel gear drives the bevel gear to rotate, the two drive seats move back to back to one end of the first reciprocating screw rod. When the second incomplete bevel gear drives the bevel gear to rotate, the two drive seats move toward each other to the other end of the first reciprocating screw rod.

[0022] Furthermore, it also includes a second water tank, the output end of the mud pump is connected to the second water tank, and the second water tank is connected to a filter press assembly;

[0023] An exhaust pipe is arranged on the top of the second water tank, and an air filter is arranged on the exhaust pipe.

[0024] Further, the second water tank is located above the first water tank, and the filter press assembly is located between the second water tank and the first water tank;

[0025] The filter press assembly comprises a filter press chamber, a filter plate frame, a driving member, a piston plate, a guide rod, a guide frame and a spring. The filter plate frame is slidably arranged in the filter press chamber, and the driving member is used to drive the filter plate frame to reciprocate in the filter press chamber.

[0026] A discharge port is provided at one end of the filter press chamber, the piston plate is slidably arranged in the discharge port, a plurality of guide rods are provided in an annular array on the piston plate, one end of the guide rod is slidably connected to the guide frame, the guide rod is sleeved with the spring, and the two ends of the spring are respectively in contact with the piston plate and the guide frame;

[0027] The filter press chamber is provided with a liquid inlet at one end close to the discharge port, the liquid inlet is connected to the second water tank through a liquid inlet pipe, and a second one-way valve is provided on the liquid inlet pipe;

[0028] A liquid outlet is arranged at one end of the filter press chamber away from the discharge port. The liquid outlet is connected to the first water tank through a liquid outlet pipe. A third one-way valve is arranged on the liquid outlet pipe.

[0029] Furthermore, it also includes a baffle, which is arranged at one end of the filter plate frame away from the discharge port, and the liquid inlet is located on the moving path of the baffle. When the filter plate frame moves to the maximum stroke on one side of the discharge port, the baffle blocks the liquid inlet.

[0030] Furthermore, the driving member includes a second reducer and a second reciprocating screw, and the output end of the second reducer is transmission-connected to the second reciprocating screw;

[0031] The second reciprocating screw is coaxially and rotatably arranged in the filter press chamber, and the filter plate frame is meshed with the second reciprocating screw;

[0032] The piston plate is slidably sleeved on the second reciprocating screw rod, and the second reciprocating screw rod is rotatably connected to the guide frame.

[0033] Furthermore, a cushion block is provided on one side of the piston plate close to the filter plate frame;

[0034] A material guide trough is arranged at the bottom of the discharge port, and a high-pressure nozzle is arranged downwardly at the top of the discharge port.

[0035] Furthermore, a method for absorbing and purifying dust for tunnel construction adopts a device for absorbing and purifying dust for tunnel construction, which is characterized by comprising the following steps:

[0036] S1, start the air pump, the first reducer, the second reducer and the mud pump, the air carrying dust is pumped into the purification pipe by the air pump, filtered by the filter bag, and at the same time, the water in the first water tank is pumped into the water by the mud pump under negative pressure, and the water and air are pumped into the second water tank by the mud pump;

[0037] S2, the air pump and the mud pump stop, the first reducer and the second reducer continue to operate, the first reducer drives the driving plate to rotate continuously until the two sections of the first incomplete bevel gears drive the two bevel gears to rotate respectively, during which the two driving seats are driven to move in opposite directions by the two sets of the first reciprocating screws, thereby causing the first docking sleeve and the second docking sleeve to move in opposite directions, and both are separated from the purification pipe synchronously;

[0038] S3, after the first incomplete bevel gear is driven, one of the incomplete racks starts to drive the driving gear to rotate until the incomplete rack is separated from the driving gear. During this process, the driven gear rotates half a circle, that is, the purification tube rotates half a circle and is switched left and right;

[0039] S4, when the incomplete rack is separated from the driving gear, the two sections of the second incomplete bevel gear start to drive the two bevel gears to rotate, until the two sections of the second incomplete bevel gear respectively drive the two bevel gears to rotate, during which time, the two driving seats are respectively driven to move toward each other by the two sets of the first reciprocating screws, thereby causing the first docking sleeve and the second docking sleeve to move toward each other, and both are synchronously docked with the purification pipe;

[0040] S5, then turn on the air pump and the mud pump, and repeat steps S1-S4. During this process, the filter bag is turned outward and enters into the other cleaning pipe under the action of the air pump and the mud pump, and the dust previously filtered inside the filter bag is also turned outward. Air and water continue to pass through the cleaning pipe, and the air and water drive the turbofan to rotate, thereby synchronously driving the cleaning pipe to rotate. During the rotation of the cleaning pipe, the dust attached to the filter bag is brushed off by the first brush and the second brush, and the dust enters into the second water tank through the mud pump along with the water flow;

[0041] The air in the second water tank is discharged into the atmosphere after passing through the air filter via the exhaust pipe, and the mud-water mixture enters the filter press chamber unidirectionally through the liquid inlet pipe. The second reducer pushes the filter plate frame to move toward the discharge port through the second reciprocating screw, and the water filtered by the filter plate frame is discharged into the first water tank unidirectionally through the liquid outlet pipe for reuse. The dust filtered by the filter plate frame moves toward the discharge port until the filter plate frame abuts against the piston plate and pushes the piston plate out of the discharge port. Then the mud and sand enter the material guide trough through the high-pressure nozzle and gravity to be collected and processed. The second reciprocating screw drives the filter plate frame to move back to the initial position. When the filter plate frame is separated from the piston plate, the piston plate returns to the discharge port under the action of several springs to facilitate the next filter pressing.

[0042] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0043] 1. The air pump pumps dust-containing air to one end of the purification pipe through the air outlet pipe and the first docking pipe, and the mud pump pumps out from the other end of the purification pipe under negative pressure. It should be noted that the output of the mud pump is greater than the input of the air pump. At the same time, a through hole is radially arranged on the first docking sleeve, and a first one-way valve is arranged on the through hole. The mud pump pumps out not only air, but also water in the first water tank entering from the first one-way valve. When the water passes through the filter bag, the filter bag helps to separate the air into several small bubbles, which helps the dust in the small bubbles to blend into the water. At the same time, the filter bag can not only filter larger dust in the air, but also the wetted filter bag can filter and adsorb smaller dust, which helps to transfer the dust in the air to the water, and the air purification effect is better.

[0044] 2. The mud pump extracts gas and liquid, and the air pump pumps gas, and then there is a high-speed fluid composed of gas and liquid in the purification pipe. When the fluid passes through the cleaning pipe, it acts on the turbofan, thereby driving the turbofan to rotate. The turbofan rotates and drives the cleaning pipe to rotate. When the cleaning pipe rotates, several first brushes close to the second butt joint side scrub the side wall of the filter bag. At the same time, the cleaning rod vertically passes through the axis of the cleaning pipe, and several second brushes arranged on it scrub the end of the filter bag. Each time the purification pipe reverses, the filter bag can be quickly cleaned. Dust attached to the bag; by reversing the purification pipe, the dust air and water pumped in are intermittently filtered through the inner and outer walls of the filter bag. When filtering on the inside, the dust on the outside is washed and discharged. After the next reversal, the inside turns to the outside, the mud is washed and flushed away, and the outside turns to the inside for filtering. This reciprocating process can clean up the filtered mud, sand and dust in time, which will not only not affect the filtering operation of the filter bag, but also greatly improve the filtering efficiency and effect of the dust. The dust is dissolved in water for subsequent treatment.

[0045] 3. When the purification pipe needs to be reversed, the air pump and the mud pump stop, and the first reducer and the second reducer continue to operate. The first reducer drives the driving plate to rotate continuously until the two sections of the first incomplete bevel gears drive the two bevel gears to rotate respectively. During this period, the two drive seats are driven to move in opposite directions by the two sets of first reciprocating screws, and then the first docking sleeve and the second docking sleeve move in opposite directions, and the two are separated from the purification pipe synchronously; after the first incomplete bevel gear is driven, one of the incomplete racks starts to drive the driving gear to rotate until the incomplete rack is separated from the driving gear. During this process, the driven gear rotates half a circle, that is, the purification pipe rotates 180 degrees, and the left The two right ends are swapped; when the incomplete rack is separated from the driving gear, the two sections of the second incomplete bevel teeth start to drive the two bevel gears to rotate, until the two sections of the second incomplete bevel teeth drive the two bevel gears to rotate respectively. During this period, the two drive seats are driven to move toward each other by the two sets of first reciprocating screws, and then the first docking sleeve and the second docking sleeve are moved toward each other, and the two are synchronously and tightly docked with the purification pipe; then, when the air pump and the mud pump are driven by water and gas, the filter bag is turned over and enters another cleaning pipe, and then continues to filter. At the same time, the mud, sand and dust inside are brushed by the first brush and the second brush, and are sucked away by the mud pump and enter the second water tank.

[0046] 4. The second reducer pushes the filter plate frame to move toward the discharge port through the second reciprocating screw. The water filtered by the filter plate frame is discharged into the first water tank through the outlet pipe in one direction for reuse. The dust filtered by the filter plate frame moves toward the discharge port until the filter plate frame abuts against the piston plate and pushes the piston plate out of the discharge port. The filter plate frame cannot move out of the discharge port, but can move to the end of the discharge port. Its stroke is controlled by the second reciprocating screw. When the filter plate frame moves to the maximum stroke, the mud and sand enter the guide trough through the high-pressure nozzle and gravity, and are collected and processed. The second reciprocating screw drives the filter plate frame back to the initial position. When the filter plate frame is separated from the piston plate, the piston plate returns to the discharge port under the action of several springs to facilitate the next filtration. In this way, the collected dust is easy to handle and will not be secondary dust. If conditions permit, it can be directly discarded on the tunnel ground as filler. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0048] Figure 1 A schematic diagram of the structure of a dust absorption and purification device for tunnel construction provided by the present invention;

[0049] Figure 2 for Figure 1 A magnified schematic diagram of the structure at center A;

[0050] Figure 3 for Figure 1 A magnified schematic diagram of the structure at B in the middle;

[0051] Figure 4 for Figure 1 A magnified schematic diagram of the structure at C in the middle;

[0052] Figure 5 A schematic diagram of the structure of the driving disc, the driving gear and the driven gear in the dust absorption and purification device for tunnel construction provided by the present invention;

[0053] Icons: 1. Base, 2. Air pump, 21. Inlet pipe, 22. Outlet pipe, 3. First water tank, 31. First docking pipe, 32. Second docking pipe, 33. Liquid outlet pipe, 34. Third one-way valve, 4. Purification pipe, 41. Filter bag, 42. Cleaning pipe, 421. First brush, 423. Cleaning rod, 424. Second brush, 425. Turbofan, 43. Rotating shaft, 5. First driving device, 51. First docking sleeve, 511. Through hole, 52. Driving seat, 53. Driving rod, 54. Guide rod, 55. First reciprocating screw, 56. Bevel gear, 512. First one-way valve, 6. Second driving device, 61. Second docking sleeve, 7. Mud pump, 8. First reducer, 81. Driving Moving plate, 82, driven gear, 83, driving gear, 84, incomplete gear rail, 85, first incomplete bevel gear, 86, second incomplete bevel gear, 87, limit gear, 88, thrust bearing, 9, filter press assembly, 91, filter press chamber, 911, discharge port, 912, liquid inlet, 913, liquid outlet, 92, filter plate frame, 93, driving member, 931, second reducer, 932, second reciprocating screw, 94, piston plate, 95, guide rod, 96, guide frame, 97, spring, 98, baffle, 99, pad, 10, second water tank, 101, exhaust pipe, 102, air filter, 103, liquid inlet pipe, 104, second one-way valve, 11, guide trough, 12, high-pressure nozzle. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0055] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] Reference Figures 1 to 5 As shown, this embodiment provides a dust absorption and purification treatment device for tunnel construction, including an air pump 2, the input end of the air pump 2 extracts dusty air generated during construction work in the tunnel through an air inlet pipe 21, and the output end of the air pump 2 is connected to an air outlet pipe 22, including a first water tank 3 arranged on a base 1, a purification pipe 4 is rotatably arranged in the first water tank 3, a filter bag 41 is arranged in the purification pipe 4, and the bag opening of the filter bag 41 is coaxially fixedly connected with the middle part of the inner cavity of the purification pipe 4; in specific implementation, the purification pipe 4 is composed of two sections of metal pipes connected together and coaxially fixed to each other by bolts, the bag opening of the filter bag 41 is clamped by two clamping rings, the two clamping rings are fixed to each other by bolts, and the bag opening of the filter bag 41 can be clamped, and the bag opening of the filter bag 41 can be opened at the same time, and the two clamping rings are coaxially arranged in the middle of the two metal pipes and fixed to facilitate the entry of dusty air.

[0057] More specifically, Figure 1 As shown, the first water tank 3 is symmetrically provided with a first butt joint pipe 31 and a second butt joint pipe 32, the first butt joint pipe 31 and the second butt joint pipe 32 are symmetrically provided at both ends of the purification pipe 4, the first butt joint pipe 31 is slidably provided with a first butt joint sleeve 51, and the second butt joint pipe 32 is provided with a second butt joint sleeve 61. When the first butt joint pipe 31, the purification pipe 4 and the second butt joint pipe 32 are coaxial, the first butt joint sleeve 51 and the second butt joint sleeve 61 are driven in opposite directions to be respectively sleeved on the two ends of the purification pipe 4, so that the first butt joint pipe 31, the purification pipe 4 and the second butt joint pipe 32 are connected; in specific implementation, During operation, the purification pipe 4 is rotatably arranged in the first water tank 3, and the first butt joint sleeve 51 and the second butt joint sleeve 61 are synchronously controlled to slide on the first butt joint pipe 31 and the second butt joint pipe 32 respectively to make the first butt joint pipe 31, the purification pipe 4 and the second butt joint pipe 32 conductive. The inner cavity of the first butt joint sleeve 51 and the second butt joint sleeve 61 near one end of the purification pipe 4 can be arranged in a stepped shape, and a rubber pad is laid at the step, so that the rubber pad is clamped by the step and the purification pipe 4, so that the first butt joint pipe 31, the purification pipe 4 and the second butt joint pipe 32 can be tightly butted to avoid air leakage.

[0058] like Figure 1As shown, the first butt joint 31 is connected with the air outlet pipe 22, and the second butt joint 32 is connected with the feed end of the mud pump 7; the air pump 2 pumps the dust-containing air into one end of the purification pipe 4 through the air outlet pipe 22 and the first butt joint 31, and the mud pump 7 is negatively pumped out from the other end of the purification pipe 4. It should be noted that the pumping amount of the mud pump 7 is greater than the pumping amount of the air pump 2. At the same time, a through hole 511 is radially arranged on the first butt joint sleeve 51, and a first one-way valve 512 is arranged on the through hole 511. The mud pump 7 pumps out not only air, but also water in the first water tank 3 entering from the first one-way valve 512. When the water passes through the filter bag 41, the filter bag 41 helps to separate the air into a number of small bubbles, which helps the dust in the small bubbles to blend into the water. At the same time, the filter bag 41 can not only filter larger dust in the air, but also the wetted filter bag 41 can filter and adsorb smaller dust, thereby helping to transfer the dust in the air to the water, and the air purification effect is better.

[0059] More specifically, Figure 1-3 As shown, two cleaning tubes 42 are coaxially and rotatably arranged in the purification tube 4, and the two cleaning tubes 42 are symmetrically arranged in the purification tube 4. The two purification tubes 4 are respectively in two metal tubes and are rotatably connected to the two metal tubes through a slip ring or a bearing, and a plurality of first brushes 421 are arranged in an array on the inner walls of the two cleaning tubes 42;

[0060] At the same time, a cleaning rod 423 is provided in the cleaning tube 42, the bag body of the filter bag 41 is placed in a cleaning tube 42, the cleaning rod 423 is matched with the gap between the bottom of the filter bag 41, and a plurality of second brushes 424 are arranged in an array on the side of the cleaning rod 423 close to the filter bag 41; a turbofan 425 is also provided in the cleaning tube 42, and the turbofan 425 is located on the side of the cleaning rod 423 away from the filter bag 41.

[0061] When implementing it, Figure 1-3As shown, the mud pump 7 extracts gas and liquid, and the air pump 2 pumps gas, so that there is a high-speed fluid composed of gas and liquid in the purification pipe 4. When the fluid passes through the cleaning pipe 42, it acts on the turbofan 425, thereby driving the turbofan 425 to rotate. The rotation of the turbofan 425 drives the cleaning pipe 42 to rotate at the same time. When the cleaning pipe 42 rotates, a plurality of first brushes 421 on the side close to the second docking pipe 32 scrub the side wall of the filter bag 41, and at the same time, the cleaning rod 423 vertically passes through the axis of the cleaning pipe 42, and a plurality of second brushes 424 arranged thereon scrub the end of the filter bag 41. When the purification tube 4 is reversed, the dust attached to the filter bag 41 can be quickly cleaned off; by reversing the purification tube 4, the dust air and water pumped in are intermittently filtered through the inner and outer walls of the filter bag 41. When filtering on the inside, the dust on the outside is washed and discharged. After the next reversal, the inside is turned to the outside, the mud and dirt are washed and flushed away, and the outside is filtered inside at the same time. This reciprocating process can clean up the filtered mud, sand and dust in time, which will not only not affect the filtering operation of the filter bag 41, but also greatly improve the filtering efficiency and effect of the dust, and the dust is dissolved in water for subsequent treatment.

[0062] like Figure 1 and 3 As shown, a first driving device 5 and a second driving device 6 are symmetrically arranged on the base 1, and the first driving device 5 and the second driving device 6 have the same structure;

[0063] The first driving device 5 includes a driving seat 52, a driving rod 53, a guide rod 54, a first reciprocating screw rod 55 and a bevel gear 56. The first butt joint tube 31, the driving rod 53, the guide rod 54 and the first reciprocating screw rod 55 are arranged in parallel. The guide rod 54 is arranged on the base 1. The first reciprocating screw rod 55 is rotatably arranged on the base 1. The driving seat 52 is slidably arranged on the guide rod 54. The driving seat 52 and the first reciprocating screw rod 55 are threadedly matched.

[0064] A plurality of driving rods 53 are arranged on the driving seat 52. The driving rod 53 of the first driving device 5 is slidably inserted into the first water tank 3 and connected to the first docking sleeve 51; the driving rod 53 of the second driving device 6 is slidably inserted into the first water tank 3 and connected to the second docking sleeve 61;

[0065] like Figure 1 , 3 As shown in FIG. 5 , a bevel gear 56 is provided on the first reciprocating screw rod 55 , a driving disc 81 is rotatably provided on the base 1 , the driving disc 81 is located below the first water tank 3 , a driving bevel gear is provided on the driving disc 81 , and the bevel gear 56 meshes with the driving bevel gear;

[0066] A first reducer 8 is disposed on the base 1 , and an output end of the first reducer 8 is drivingly connected to a driving disk 81 .

[0067] During specific implementation, the driving disk 81 is continuously driven by the first reducer 8, and the driving bevel teeth thereon can drive the bevel gear 56 to rotate. The bevel gear 56 rotates continuously in one direction. Although the two coaxial bevel gears 56 rotate in opposite directions, the first reciprocating screw rod 55 is not affected, and the two driving seats 52 are synchronously driven to move toward or away from each other. Then, the two driving seats 52 respectively drive the first docking sleeve 51 and the second docking sleeve 61 to move toward or away from each other through a plurality of driving rods 53, thereby achieving docking or separation with the purification tube 4.

[0068] like Figure 1 , 3 As shown in FIG. 5 , a rotating shaft 43 is rotatably arranged in the first water tank 3, and the rotating shaft 43 is connected to the middle of the purification pipe 4. The rotating shaft 43 vertically passes through the first water tank 3 and is sleeved with a driven gear 82;

[0069] The bottom plate of the first water tank 3 is rotatably provided with a driving gear 83, and the driving gear 83 is meshed with the driven gear 82;

[0070] The driven gear 82 is coaxially arranged with the driving disk 81, and a plurality of limit gears 87 are arranged in an annular array on the base 1, and the plurality of limit gears 87 are meshed with the outer wall of the driving disk 81, and the driving disk is rotatably connected with the base 1 through a thrust bearing 88, and two sections of incomplete racks 84 are symmetrically arranged on the inner ring wall of the driving disk 81, and the incomplete racks 84 are meshed with the driving gear 83. When a section of the incomplete rack 84 drives the driving gear 83 to rotate, the driven gear 82 rotates half a circle; that is, the purification tube 4 is driven to rotate 180 degrees to realize the reversal of the purification tube 4.

[0071] More specifically, the driving bevel gear includes a first driving part and a second driving part, the first driving part and the second driving part have the same structure and are symmetrically arranged on the outer edge of the driving disk 81, the first driving part includes a first incomplete bevel gear 85 and a second incomplete bevel gear 86 arranged at intervals, and the incomplete rack 84 is located between the first incomplete bevel gear 85 and the second incomplete bevel gear 86;

[0072] When the first incomplete bevel gear 85 drives the bevel gear 56 to rotate, the two drive seats 52 move away from each other to one end of the first reciprocating screw rod 55. When the second incomplete bevel gear 86 drives the bevel gear 56 to rotate, the two drive seats 52 move toward each other to the other end of the first reciprocating screw rod 55.

[0073] When implementing it, Figure 1-3As shown in Figures 5 and 6, when the purification pipe 4 is to be reversed, the air pump 2 and the mud pump 7 stop, the first reducer 8 and the second reducer 931 continue to operate, and the first reducer 8 drives the driving plate 81 to rotate continuously until the two sections of the first incomplete bevel teeth 85 drive the two bevel gears 56 to rotate respectively. During this period, the two drive seats 52 are driven to move in opposite directions by the two sets of first reciprocating screws 55, so that the first docking sleeve 51 and the second docking sleeve 61 move in opposite directions, and the two are synchronously separated from the purification pipe 4; after the first incomplete bevel teeth 85 are driven, one of the incomplete racks 84 starts to drive the driving gear 83 to rotate until the incomplete rack 84 is separated from the driving gear 83. During this process, the driven gear 82 rotates half a circle, that is, the purification pipe 4 rotates 180 degrees. , the left and right ends are swapped; when the incomplete rack 84 is separated from the driving gear 83, the two sections of the second incomplete bevel teeth 86 start to drive the two bevel gears 56 to rotate, until the two sections of the second incomplete bevel teeth 86 respectively drive the two bevel gears 56 to rotate. During this period, the two drive seats 52 are driven to move toward each other by the two sets of first reciprocating screws 55, so that the first docking sleeve 51 and the second docking sleeve 61 move toward each other, and the two are synchronously and tightly docked with the purification pipe 4; then, when the air pump 2 and the mud pump 7 are driven by water and gas, the filter bag 41 is turned over and enters another cleaning pipe 42, and then continues to filter. At the same time, the mud, sand and dust inside are brushed by the first brush 421 and the second brush 424, and are sucked away by the mud pump 7 and enter the second water tank 10.

[0074] like Figure 1 As shown, the second water tank 10 is also included, the output end of the mud pump 7 is connected to the second water tank 10, and the second water tank 10 is connected to the filter press assembly 9; an exhaust pipe 101 is arranged on the top of the second water tank 10, and an air filter 102 is arranged on the exhaust pipe 101. Then, the solid dust in the air in the second water tank 10 is basically filtered out, and then the air enters the air filter 102 through the exhaust pipe 101 on the top of the second water tank 10 for final filtration and can be discharged, with good filtering effect and high filtering efficiency, and almost no secondary dust.

[0075] More specifically, Figure 1 and 4 As shown, the second water tank 10 is located above the first water tank 3, and the filter press assembly 9 is located between the second water tank 10 and the first water tank 3;

[0076] The filter press assembly 9 includes a filter press chamber 91, a filter plate frame 92, a driving member 93, a piston plate 94, a guide rod 95, a guide frame 96 and a spring 97. The filter plate frame 92 is slidably arranged in the filter press chamber 91, and the driving member 93 is used to drive the filter plate frame 92 to reciprocate in the filter press chamber 91; the filter plate frame 92 is mainly composed of two porous plates and filter cloth stretched on the porous plates, and the filter cloth is sandwiched between the two porous plates. The filtrate passes through the holes on the porous plates and is filtered through the filter plates.

[0077] A discharge port 911 is provided at one end of the filter press chamber 91, a piston plate 94 is slidably disposed in the discharge port 911, a plurality of guide rods 95 are provided in an annular array on the piston plate 94, one end of the guide rod 95 is slidably connected to a guide frame 96, a spring 97 is sleeved on the guide rod 95, and two ends of the spring 97 are respectively in contact with the piston plate 94 and the guide frame 96;

[0078] A liquid inlet 912 is provided at one end of the filter press chamber 91 near the discharge port 911. The liquid inlet 912 is connected to the second water tank 10 through a liquid inlet pipe 103, and a second one-way valve 104 is provided on the liquid inlet pipe 103; the second one-way valve 104 is used to control the silt water in the second water tank 10 to enter the filter press chamber 91 in one direction, and at the same time prevent the liquid from flowing back into the second water tank 10 during filtration.

[0079] A liquid outlet 913 is provided at one end of the filter press chamber 91 away from the discharge port 911. The liquid outlet 913 is connected to the first water tank 3 through a liquid outlet pipe 33. A third one-way valve 34 is provided on the liquid outlet pipe 33. The filtered water can flow into the first water tank 3 in one direction. It should be noted that when the filter plate frame 92 is located at the initial position of the filter press chamber 91, that is, when the filter press chamber 91 is away from one end of the discharge port 911, the liquid outlet 913 is always located on the side of the filter plate frame 92 away from the discharge port 911, and thus the liquid entering from the second water tank 10 must pass through the filter plate frame 92 before entering the first water tank 3.

[0080] It also includes a baffle 98, which is arranged at one end of the filter plate frame 92 away from the discharge port 911, and the liquid inlet 912 is located on the moving path of the baffle 98. When the filter plate frame 92 moves to the maximum stroke on the side of the discharge port 911, the baffle 98 blocks the liquid inlet 912, that is, even if the filter plate frame 92 passes over the liquid inlet 912, under the action of the first one-way valve 512 and the baffle 98, no unfiltered liquid will enter the cavity between the filter plate frame 92 and the liquid outlet 913, but even if there is a small amount of leakage, it will not cause any harm.

[0081] More specifically, Figure 1 and 4 As shown, the driving member 93 includes a second reducer 931 and a second reciprocating screw rod 932, and the output end of the second reducer 931 is transmission-connected to the second reciprocating screw rod 932;

[0082] The second reciprocating screw 932 is coaxially and rotatably arranged in the filter press chamber 91, and the filter plate frame 92 is engaged with the second reciprocating screw 932; the filter plate frame 92 is not circular, and it slides with the filter press chamber 91. When the second reciprocating screw 932 rotates, it cannot rotate, and then it slides in the filter press chamber 91.

[0083] The piston plate 94 is slidably mounted on the second reciprocating screw rod 932 , and the second reciprocating screw rod 932 is rotatably connected to the guide frame 96 .

[0084] A spacer 99 is disposed between the piston plate 94 and the filter plate frame 92 , which can maintain a certain gap between the piston plate 94 and the filter plate frame 92 , making it easier to clean the mud and sand therebetween.

[0085] A material guide trough 11 is disposed at the bottom of the discharge port 911 , and a high-pressure nozzle 12 is disposed downwardly at the top of the discharge port 911 .

[0086] When implementing it, Figure 1 and 4 As shown, the second reducer 931 pushes the filter plate frame 92 to move toward the discharge port 911 through the second reciprocating screw 932, and the water filtered by the filter plate frame 92 is discharged into the first water tank 3 in one direction through the liquid outlet pipe 33 for reuse, and the dust filtered by the filter plate frame 92 moves toward the discharge port 911 until the filter plate frame 92 abuts against the piston plate 94 and pushes the piston plate 94 to move out of the discharge port 911. The filter plate frame 92 cannot move out of the discharge port 911, but can move to the end of the discharge port 911, and its stroke is controlled by the second reciprocating screw. The rod 932 controls, when the filter plate frame 92 moves to the maximum stroke, the mud and sand enter the guide trough 11 through the high-pressure nozzle 12 and the action of gravity, and are collected and processed. The second reciprocating screw rod 932 drives the filter plate frame 92 to move back to the initial position. When the filter plate frame 92 is separated from the piston plate 94, the piston plate 94 returns to the discharge port 911 under the action of a number of springs 97 to facilitate the next filter pressing. The collected dust is easy to handle and will not be secondary dust. If conditions permit, it can be directly discarded on the tunnel ground and used as filler.

[0087] In summary, the device can be set on a trolley and used directly in the tunnel, shortening the use of the air pump 2 air inlet end pipeline, which is simple and convenient, has high dust removal effect and efficiency, is convenient for dust collection and treatment, and will not cause secondary dust.

[0088] A method for absorbing and purifying dust for tunnel construction, using a device for absorbing and purifying dust for tunnel construction, is characterized in that it includes the following steps:

[0089] S1, start the air pump 2, the first reducer 8, the second reducer 931 and the mud pump 7, the air carrying dust is pumped into the purification pipe 4 through the air pump 2, filtered by the filter bag 41, and at the same time, the water in the first water tank 3 is negatively pumped by the mud pump 7, and the water and air are pumped into the second water tank 10 by the mud pump 7; the water and the filter bag 41 cooperate to more conveniently filter out the dust in the air and blend it into the water.

[0090] S2, the air pump 2 and the mud pump 7 stop, the first reducer 8 and the second reducer 931 continue to operate, and the first reducer 8 drives the driving plate 81 to rotate continuously until the two sections of the first incomplete bevel gears 85 drive the two bevel gears 56 to rotate respectively. During this period, the two sets of first reciprocating screw rods 55 drive the two driving seats 52 to move in opposite directions, thereby causing the first docking sleeve 51 and the second docking sleeve 61 to move in opposite directions, and both are synchronously separated from the purification pipe 4;

[0091] S3, after the first incomplete bevel gear 85 is driven, one of the incomplete racks 84 starts to drive the driving gear 83 to rotate until the incomplete rack 84 is separated from the driving gear 83. During this process, the driven gear 82 rotates half a circle, that is, the purification tube 4 rotates half a circle, and the left and right are switched to achieve reversal;

[0092] S4, when the incomplete rack 84 is separated from the driving gear 83, the two sections of the second incomplete bevel teeth 86 start to drive the two bevel gears 56 to rotate, until the two sections of the second incomplete bevel teeth 86 drive the two bevel gears 56 to rotate respectively. During this period, the two sets of first reciprocating screw rods 55 drive the two driving seats 52 to move toward each other, thereby causing the first docking sleeve 51 and the second docking sleeve 61 to move toward each other, and the two are synchronously docked with the purification pipe 4;

[0093] S5, then turn on the air pump 2 and the mud pump 7, and repeat steps S1-S4. During this process, the filter bag 41 is turned outward and enters another cleaning pipe 42 under the action of the air pump 2 and the mud pump 7, and the dust previously filtered inside the filter bag 41 is also turned outward. Air and water continue to pass through the cleaning pipe 42, and the air and water drive the turbofan 425 to rotate, thereby synchronously driving the cleaning pipe 42 to rotate. During the rotation of the cleaning pipe 42, the dust attached to the filter bag 41 is brushed off by the first brush 421 and the second brush 424, and the dust enters the second water tank 10 through the mud pump 7 along with the water flow;

[0094] The air in the second water tank 10 is discharged into the atmosphere after passing through the air filter 102 via the exhaust pipe 101, and the mud-water mixture enters the filter press chamber 91 unidirectionally through the liquid inlet pipe 103. The second reducer 931 pushes the filter plate frame 92 to move toward the discharge port 911 through the second reciprocating screw rod 932. The water filtered by the filter plate frame 92 is discharged into the first water tank 3 unidirectionally through the liquid outlet pipe 33 for reuse. The dust filtered by the filter plate frame 92 moves toward the discharge port 911 until the filter plate frame 92 abuts against the piston plate 94 and pushes the piston plate 94 out of the discharge port 911. Then the mud and sand enter the guide trough 11 through the high-pressure nozzle 12 and the action of gravity, and are collected and processed. The second reciprocating screw rod 932 drives the filter plate frame 92 to move back to the initial position. When the filter plate frame 92 is separated from the piston plate 94, the piston plate 94 returns to the discharge port 911 under the action of a plurality of springs 97 to facilitate the next filter pressing.

[0095] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dust absorption and purification device for tunnel construction, comprising an air pump (2), wherein the input end of the air pump (2) extracts dusty air in the tunnel through an air inlet pipe (21), and the output end of the air pump (2) is connected to an air outlet pipe (22), characterized in that: It comprises a first water tank (3) arranged on a base (1), a purification tube (4) being rotatably arranged in the first water tank (3), a filter bag (41) being arranged in the purification tube (4), and a bag opening of the filter bag (41) being coaxially fixedly connected to the middle of the inner cavity of the purification tube (4); A first butt joint pipe (31) and a second butt joint pipe (32) are symmetrically arranged in the first water tank (3); the first butt joint pipe (31) and the second butt joint pipe (32) are symmetrically arranged at two ends of the purification pipe (4); a first butt joint sleeve (51) is slidably arranged on the first butt joint pipe (31); and a second butt joint sleeve (61) is arranged on the second butt joint pipe (32); when the first butt joint pipe (31), the purification pipe (4) and the second butt joint pipe (32) are coaxial, the first butt joint sleeve (51) and the second butt joint sleeve (61) are driven in opposite directions to be respectively sleeved on two ends of the purification pipe (4), so that the first butt joint pipe (31), the purification pipe (4) and the second butt joint pipe (32) are connected; The first butt joint pipe (31) is in communication with the air outlet pipe (22), and the second butt joint pipe (32) is in communication with a feed end of a mud pump (7); A through hole (511) is provided in the radial direction on the first butt joint sleeve (51), and a first one-way valve (512) is provided on the through hole (511); A first driving device (5) and a second driving device (6) are symmetrically arranged on the base (1), and the first driving device (5) and the second driving device (6) have the same structure; The first driving device (5) comprises a driving seat (52), a driving rod (53), a guide rod (54), a first reciprocating screw rod (55) and a bevel gear (56); the first butt joint tube (31), the driving rod (53), the guide rod (54) and the first reciprocating screw rod (55) are arranged in parallel; the guide rod (54) is arranged on the base (1); the first reciprocating screw rod (55) is rotatably arranged on the base (1); the driving seat (52) is slidably arranged on the guide rod (54); and the driving seat (52) and the first reciprocating screw rod (55) are threadably matched; A plurality of driving rods (53) are arranged on the driving seat (52); the driving rods (53) of the first driving device (5) are connected to the first docking sleeve (51) after sliding into the first water tank (3); the driving rods (53) of the second driving device (6) are connected to the second docking sleeve (61) after sliding into the first water tank (3); The bevel gear (56) is arranged on the first reciprocating screw rod (55), a driving disk (81) is rotatably arranged on the base (1), the driving disk (81) is located below the first water tank (3), driving bevel teeth are arranged on the driving disk (81), and the bevel gear (56) is meshed with the driving bevel teeth; A first reducer (8) is disposed on the base (1), and an output end of the first reducer (8) is drivingly connected to the driving disc (81); A rotating shaft (43) is rotatably arranged in the first water tank (3), the rotating shaft (43) is connected to the middle part of the purification pipe (4), and the rotating shaft (43) is vertically passed through the first water tank (3) and is sleeved with a driven gear (82); The bottom plate of the first water tank (3) is rotatably provided with a driving gear (83), the driving gear (83) being meshed with the driven gear (82); The driven gear (82) is coaxially arranged with the driving disk (81); two sections of incomplete racks (84) are symmetrically arranged on the driving disk (81); the incomplete racks (84) are meshed with the driving gear (83); when one section of the incomplete rack (84) drives the driving gear (83) to rotate, the driven gear (82) rotates half a circle; The driving bevel gear comprises a first driving part and a second driving part, the first driving part and the second driving part have the same structure and are symmetrically arranged on the driving disk (81), the first driving part comprises a first incomplete bevel gear (85) and a second incomplete bevel gear (86) which are arranged at intervals, and the incomplete gear track (84) is located between the first incomplete bevel gear (85) and the second incomplete bevel gear (86); When the first incomplete bevel gear (85) drives the bevel gear (56) to rotate, the two drive seats (52) move in opposite directions to one end of the first reciprocating screw rod (55); and when the second incomplete bevel gear (86) drives the bevel gear (56) to rotate, the two drive seats (52) move in opposite directions to the other end of the first reciprocating screw rod (55).

2. A dust absorption and purification device for tunnel construction according to claim 1, characterized in that: Two cleaning tubes (42) are coaxially and rotatably arranged in the purification tube (4); the two cleaning tubes (42) are symmetrically arranged in the purification tube (4); and a plurality of first brushes (421) are arranged in an array on the inner walls of the two cleaning tubes (42); A cleaning rod (423) is arranged in the cleaning tube (42); the bag body of the filter bag (41) is placed in the cleaning tube (42); the cleaning rod (423) is gap-matched with the bag bottom of the filter bag (41); and a plurality of second brushes (424) are arranged in an array on one side of the cleaning rod (423) close to the filter bag (41); A turbofan (425) is also provided in the cleaning pipe (42), and the turbofan (425) is located on a side of the cleaning rod (423) away from the filter bag (41).

3. A dust absorption and purification device for tunnel construction according to claim 2, characterized in that: It also includes a second water tank (10), the output end of the mud pump (7) is in communication with the second water tank (10), and the second water tank (10) is in communication with a filter press assembly (9); An exhaust pipe (101) is provided on the top of the second water tank (10), and an air filter (102) is provided on the exhaust pipe (101).

4. A dust absorption and purification device for tunnel construction according to claim 3, characterized in that: The second water tank (10) is located above the first water tank (3), and the filter press assembly (9) is located between the second water tank (10) and the first water tank (3); The filter press assembly (9) comprises a filter press chamber (91), a filter plate frame (92), a driving member (93), a piston plate (94), a guide rod (95), a guide frame (96) and a spring (97); the filter plate frame (92) is slidably disposed in the filter press chamber (91); and the driving member (93) is used to drive the filter plate frame (92) to reciprocate in the filter press chamber (91); A discharge port (911) is provided at one end of the filter press chamber (91), the piston plate (94) is slidably disposed in the discharge port (911), a plurality of guide rods (95) are provided in an annular array on the piston plate (94), one end of the guide rod (95) is slidably connected to the guide frame (96), the guide rod (95) is sleeved with the spring (97), and two ends of the spring (97) are respectively in contact with the piston plate (94) and the guide frame (96); A liquid inlet (912) is provided at one end of the filter press chamber (91) close to the discharge port (911); the liquid inlet (912) is connected to the second water tank (10) via a liquid inlet pipe (103); a second one-way valve (104) is provided on the liquid inlet pipe (103); A liquid outlet (913) is provided at one end of the filter press chamber (91) away from the discharge port (911); the liquid outlet (913) is connected to the first water tank (3) via a liquid outlet pipe (33); and a third one-way valve (34) is provided on the liquid outlet pipe (33).

5. A dust absorption and purification device for tunnel construction according to claim 4, characterized in that: It also includes a baffle (98), the baffle (98) being arranged at one end of the filter plate frame (92) away from the discharge port (911), the liquid inlet (912) being located on the moving path of the baffle (98), and when the filter plate frame (92) moves to the maximum stroke on one side of the discharge port (911), the baffle (98) blocks the liquid inlet (912).

6. A dust absorption and purification device for tunnel construction according to claim 5, characterized in that: The driving member (93) comprises a second reducer (931) and a second reciprocating screw rod (932), and the output end of the second reducer (931) is drivingly connected to the second reciprocating screw rod (932); The second reciprocating screw rod (932) is coaxially and rotatably arranged in the filter press chamber (91), and the filter plate frame (92) is meshed with the second reciprocating screw rod (932); The piston plate (94) is slidably sleeved on the second reciprocating screw rod (932), and the second reciprocating screw rod (932) is rotatably connected to the guide frame (96).

7. A dust absorption and purification device for tunnel construction according to claim 6, characterized in that: A cushion block (99) is provided on one side of the piston plate (94) close to the filter plate frame (92); A material guide trough (11) is provided at the bottom of the discharge port (911), and a high-pressure nozzle (12) is provided downwardly at the top of the discharge port (911).

8. A method for absorbing and purifying dust for tunnel construction, using the device for absorbing and purifying dust for tunnel construction as claimed in claim 7, characterized in that: The following steps are involved: S1, starting the air pump (2), the first reducer (8), the second reducer (931) and the mud pump (7); the air carrying dust is pumped into the purification pipe (4) through the air pump (2) and filtered by the filter bag (41); at the same time, the water in the first water tank (3) is pumped into the water by the mud pump (7) under negative pressure; the water and air are pumped into the second water tank (10) by the mud pump (7); S2, the air pump (2) and the mud pump (7) stop, the first reducer (8) and the second reducer (931) continue to operate, the first reducer (8) drives the drive plate (81) to rotate continuously until the two sections of the first incomplete bevel gears (85) respectively drive the two bevel gears (56) to rotate, during which time, the two sets of the first reciprocating screws (55) respectively drive the two drive seats (52) to move in opposite directions, thereby causing the first docking sleeve (51) and the second docking sleeve (61) to move in opposite directions, and both are synchronously separated from the purification pipe (4); S3, after the first incomplete bevel gear (85) has been driven, one of the incomplete racks (84) starts to drive the driving gear (83) to rotate until the incomplete rack (84) is separated from the driving gear (83). During this process, the driven gear (82) rotates half a circle, that is, the purification tube (4) rotates half a circle and is switched left and right; S4, when the incomplete rack (84) is separated from the driving gear (83), the two sections of the second incomplete bevel teeth (86) start to drive the two bevel gears (56) to rotate, until the two sections of the second incomplete bevel teeth (86) respectively drive the two bevel gears (56) to rotate. During this period, the two sets of the first reciprocating screws (55) respectively drive the two drive seats (52) to move towards each other, thereby causing the first docking sleeve (51) and the second docking sleeve (61) to move towards each other, and the two are synchronously docked with the purification pipe (4); S5, then turning on the air pump (2) and the mud pump (7), and repeating steps S1-S4. During this process, the filter bag (41) is turned outwards by the action of the air pump (2) and the mud pump (7) and enters into the other cleaning pipe (42). The dust previously filtered inside the filter bag (41) is also turned outwards. Air and water continue to flow through the cleaning pipe (42). The air and water drive the turbofan (425) to rotate, thereby synchronously driving the cleaning pipe (42) to rotate. During the rotation process, the cleaning pipe (42) brushes off the dust attached to the filter bag (41) through the first brush (421) and the second brush (424). The dust flows through the mud pump (7) along with the water and enters into the second water tank (10); The air in the second water tank (10) is discharged into the atmosphere after passing through the air filter (102) via the exhaust pipe (101), and the mud-water mixture enters the filter press chamber (91) in one direction through the liquid inlet pipe (103). The second reducer (931) pushes the filter plate frame (92) to move toward the discharge port (911) via the second reciprocating screw (932). The water filtered by the filter plate frame (92) is discharged in one direction into the first water tank (3) through the liquid outlet pipe (33) for reuse. The dust filtered by the filter plate frame (92) is discharged to the discharge port (911). The filter plate frame (92) moves to one side of the discharge port (911) until the filter plate frame (92) abuts against the piston plate (94) and pushes the piston plate (94) out of the discharge port (911). Then, the mud and sand enter the guide trough (11) through the high-pressure nozzle (12) and under the action of gravity to be collected and processed. The second reciprocating screw (932) then drives the filter plate frame (92) to move back to the initial position. When the filter plate frame (92) is separated from the piston plate (94), the piston plate (94) returns to the discharge port (911) under the action of the plurality of springs (97) to facilitate the next filtration.

Images