A dust suppression device for coal mines

Abstract

The invention relates to the field of dust removal and suppression in coal mines, and specifically relates to a dust suppression device for coal mines, comprising an atomizing dust suppression component and two lifting support components for supporting the atomizing dust suppression component, the atomizing dust suppression component comprising two groups of atomizing pipes and a water supply pipeline for supplying water to the atomizing pipes, the atomizing pipe comprising a pipe sleeve, a flow limiting rod and an end support member fixed at one end of the pipe sleeve, a plurality of atomizing nozzles are evenly arranged on the pipe sleeve along its length direction, the flow limiting rod passes through the end support member and is slidably connected to the pipe sleeve, and a peripheral wall of the flow limiting rod is sealed to an inner wall of the pipe sleeve; the two groups of atomizing pipes are arranged in parallel and face oppositely, a sliding hole is provided on the end support member, a nozzle yielding port is provided on the end support member, one end of the pipe sleeve away from the end support member is fixedly connected to one of the lifting support components respectively, the water mist wall generated by the invention is uniform, can reduce waste of water resources, has a simple structure, stable support, and is easy to operate.

Description

Technical Field

[0001] The invention relates to the field of dust removal and suppression in coal mines, and in particular to a dust suppression device for coal mines. Background Art

[0002] During the coal mining process, a large amount of coal dust will be generated. Due to the small space in the mine, the coal dust is relatively concentrated in the narrow space, which will cause low visibility at the work site. When the workers inhale the dust, it will affect their health. Therefore, dust suppression work in the coal mining process is very important. At present, various types of dust suppression equipment are mainly used to reduce the amount of coal dust at the work site.

[0003] In the prior art, a dust suppression device for coal mine excavation is disclosed in a Chinese patent with publication number CN117685038A, which includes two side panels arranged on the left and right, a telescopic structure is connected between the two side panels, a winding device is connected between the two side panels, a water spray pipe is wound around the winding device, and the water spray pipe is connected to the telescopic structure. When the telescopic structure is stretched or contracted, the water spray pipe follows the telescopic structure to be correspondingly retracted and released on the winding device. Both ends of the water spray pipe are laid along the two side panels, and atomizing nozzles for spraying water vapor are equidistantly installed on the water spray pipe; a shielding plate with a door-like structure is symmetrically rotated through an axle pin at the top of the side panel, and the two shielding plates are spliced ​​together to shield the atomizing nozzle, and at the same time are used for staff to pass through the door-like structure of the shielding plate.

[0004] Although the above technical solution can better adapt to mine tunnels of different widths and fully suppress dust, its winding structure will cause the water flow of the wound water spray pipe to be blocked, resulting in the water pressure of the part of the water spray pipe far away from the water supply side being lower than that of the water spray pipe close to the water supply side; and the winding device will block part of the water mist due to the obstruction of the winding device, forming a gap or a thin area on the water mist wall; in addition, in order to achieve winding and unwinding, the water spray pipe must be set as a hose structure, and in order to ensure the water supply of the water supply hose, the winding device located in the middle cannot over-tighten the water spray pipe, so the water spray pipe will bend under the action of gravity, and the change in the middle span of the two side plates will affect the degree of bending of the water spray pipe, making it difficult for the actual direction of the nozzle on the water spray pipe to meet the initial design direction during operation. These situations will lead to uneven distribution of water mist in the actual water mist wall. When in use, enough water is needed to make the area with thin water mist meet the minimum dust suppression requirements. In the process of continuous operation, it will cause a large waste of water resources and energy, and at the same time, it will cause unnecessary increase in water accumulation near the dust suppression device, increasing the drainage burden. In addition, this solution uses shielding plates to create a water-free zone for traffic. The shielding plates block water mist, which will cause the mist to accumulate and merge into a stream, and then flow down from the shielding plates. The water flowing from the front and back of the shielding plates will still affect traffic. Summary of the invention

[0005] In order to solve the above problems, this solution provides a dust suppression device for coal mines:

[0006] A dust suppression device for coal mines, comprising an atomizing dust suppression assembly and two lifting support assemblies for supporting the atomizing dust suppression assembly, the atomizing dust suppression assembly comprising two groups of atomizing pipes and a water supply pipeline for supplying water to the atomizing pipes, the atomizing pipes comprising a pipe sleeve, a flow limiting rod and an end support fixed at one end of the pipe sleeve, a plurality of atomizing nozzles are evenly arranged on the pipe sleeve along its length direction, the flow limiting rod passes through the end support and is slidably connected to the pipe sleeve, and a seal is formed between the peripheral wall of the flow limiting rod and the inner wall of the pipe sleeve; the two groups of atomizing pipes are arranged in parallel and in opposite directions, a sliding hole is provided on the end support, the pipe sleeves of adjacent atomizing pipes are slidably arranged in the sliding hole, a nozzle yielding port connected to the sliding hole is provided on the bottom surface of the end support, and one end of the pipe sleeve away from the end support is respectively fixedly connected to one of the lifting support assemblies.

[0007] By adopting the above technical scheme, by changing the spacing between the two lifting support assemblies, the two groups of atomizing pipes can be staggered at different distances to adapt to mine tunnels of different widths. By adjusting the position of the current limiting rod in the pipe sleeve, the actual water flow length of the pipe sleeve can be changed. When in use, it can be avoided that the two groups of atomizing pipes are both atomized and dust suppressed in the area where the pipe sleeves are staggered, causing waste. The atomizing pipe can be set as a rigid straight pipe, which can better control the direction of the atomizing nozzle and make the generated water mist wall water mist uniform. The end support is set so that the two atomizing pipes can support each other, which is conducive to keeping the two atomizing pipes parallel. In addition, by adjusting the position of the current limiting rod, the two current limiting rods are staggered in the area, and a waterless area can be created for personnel and equipment to pass through. Compared with the prior art of setting a baffle for shielding, the structure of this scheme blocks the water supply of the waterless area, which is more water-saving and environmentally friendly, and will not produce other forms of water flow, reducing ground water accumulation. At the same time, the structure is also simpler, which is conducive to reducing the cost of the device.

[0008] Furthermore, it also includes a lateral support assembly arranged between the two lifting support assemblies and located above the atomizing dust suppression assembly, the lateral support assembly includes a crossbeam and a telescopic member slidably connected to both ends of the crossbeam, the telescopic member is detachably fixedly connected to the lifting support assembly, and the end support member is slidably connected to the crossbeam.

[0009] By adopting the above technical solution, the lateral length can be adjusted by slidingly connecting the end support members with the crossbeam, and the crossbeam is used to further support the atomizing dust suppression assembly, which helps to avoid deformation of the atomizing dust suppression assembly.

[0010] Furthermore, a linkage assembly is provided on the lateral support assembly, and the linkage assembly includes a gear rotatably connected to the crossbeam, two racks meshing with the gear and a rotary driver driving the gear to rotate, and the two racks are respectively fixedly connected to one of the current limiting rods and slidably connected to the crossbeam.

[0011] By adopting the above technical solution, the two current limiting rods can move synchronously in opposite directions or towards each other, and the rotary driver is used for driving, so that the position of the current limiting rods can be easily adjusted.

[0012] Preferably, it also includes an identification device and a controller for identifying people and equipment to be passed, the identification device is connected to the controller signal, and the output end of the controller is connected to the rotation drive signal.

[0013] By adopting the above technical solution, automatic identification means can be used to determine whether there are people or equipment that need to pass, so as to facilitate the automatic control of the rotary drive to create or close the waterless zone. In this way, people do not need to free their hands to operate when carrying tools, and people do not need to return to close the waterless zone when equipment passes, creating convenient conditions for the passage of staff.

[0014] Preferably, it also includes a top covering assembly, which includes a first support member fixed to the top of the lifting support assembly, a second support member fixed to the lateral support assembly, and a covering member mounted on the first support member and the second support member, and the covering member covers the lateral support assembly and the linkage assembly from above.

[0015] By adopting the above technical solution, a covering member is used to cover the top of the device to prevent dust, coal dust, etc. falling from the top of the mine tunnel from falling directly onto the lateral support assembly, linkage assembly and atomization dust suppression assembly, thereby preventing impurities from having adverse effects on the transmission structure and sliding structure.

[0016] Furthermore, the lifting support assembly includes a base and a lifting frame vertically slidably connected to the base, the base is provided with a piston cavity, the bottom of the lifting frame is provided with a piston block adapted to the piston cavity, and the base is provided with a first water inlet and outlet nozzle connected to the bottom of the piston cavity; the lifting frame is evenly provided with a plurality of positioning grooves in the vertical direction, and a fixing block is slidably provided on the base, and when the fixing block is inserted into the positioning groove, the base is locked with the lifting frame.

[0017] By adopting the above technical solution, the lifting support assembly can be extended by utilizing water power. It is only necessary to connect the water source used to supply water to the atomizing dust suppression assembly to the first water inlet and outlet nozzle first, and then the lifting frame can be lifted and lowered to adapt to the height of the mine tunnel. At the same time, the water in the piston cavity can be used as a counterweight to help maintain the stability of the lifting support assembly. The positioning groove and the fixing block can lock the position between the lifting frame and the base, and can maintain the height of the lifting frame when the water in the piston cavity leaks or is used for other purposes.

[0018] Preferably, a water storage cavity is provided on the base; and an anchor is provided on the top of the lifting frame.

[0019] By adopting the above technical solution, the water storage chamber can be used as a temporary water supply source or a temporary water storage container for ground water drainage, and the water in the water storage chamber can also be used as a counterweight to increase the stability of the base. The anchor nails can be inserted into the top wall of the mine tunnel when the lifting frame is raised to the top of the mine tunnel, further increasing the stability of the lifting support assembly.

[0020] Furthermore, the water supply pipeline includes a first water supply joint, a second water supply joint, a main water supply joint, a first connecting pipe and a second connecting pipe, the first water supply joint is connected to the pipe sleeve of one of the atomizing tubes; the flow limiting rod of the other atomizing tube is provided with a water inlet hole connected to both ends of the flow limiting rod, the second water supply joint is connected to the water inlet hole, the first water supply joint is connected to the main water supply joint through the first connecting pipe, the second water supply joint is connected to the main water supply joint through the second connecting pipe, the lifting frame includes a hollow box body, the first water supply joint and the main water supply joint are fixedly arranged on the side wall of the box body, and the first connecting pipe and part of the second connecting pipe are located in the box body.

[0021] By adopting the above technical solution, one of the atomizing tubes is supplied with water from the end away from the flow limiting rod, and the other atomizing tube is supplied with water through the flow limiting rod, so that the two groups of atomizing tubes are supplied with water from the same side, so that the water supply pipelines can be integrated on the same lifting frame, which is convenient for supplying water to the two groups of atomizing tubes through one water pump.

[0022] Furthermore, it also includes a side wing shielding assembly, which includes a retractable L-shaped side wing support, a square hole socket fixedly arranged on the top of the lifting support assembly, and a flexible shielding member, the L-shaped side wing support includes an L-shaped base frame, a plug-in square head fixed at one end of the L-shaped base frame and adapted to the square hole socket, and a telescopic frame slidably arranged at the other end of the L-shaped base frame, and the shielding member is fixed on the L-shaped base frame and covers the L-shaped side wing support.

[0023] Equipment that generates coal dust in mine tunnels is generally also equipped with dust suppression devices. In addition to the dust suppression function, the dust suppression devices for coal mines of this type in the present scheme also need to isolate the areas where coal dust is concentrated from other areas. This requires the device to "cut off" the entire mine tunnel. However, when the mine tunnel is large in size, especially when it is wide, the width of the water mist wall needs to be very large, which is likely to far exceed the dust suppression requirement. This requires a large amount of water, which is relatively wasteful. By adopting the above technical scheme, the side wing shielding assembly can be used to replace part of the water mist wall to cut off the mine tunnel, which helps to save water resources. When not in use, the telescopic frame of the L-shaped side wing support is set downward. When it is needed, the insertion angle of the plug-in square head is changed to make the telescopic frame of the L-shaped side wing support horizontal. The L-shaped side wing support is extended horizontally by moving the telescopic frame to adjust the range of horizontal shielding.

[0024] Preferably, a side guard plate is fixedly provided on the side wing shielding assembly, and the side guard plate is located on a side of the L-shaped base frame away from the telescopic frame.

[0025] By adopting the above technical solution, the side guard plate is used to shield the area between the side wing shielding assembly and the lifting frame.

[0026] The present invention has the following beneficial effects:

[0027] The present invention can adapt to different widths of mine tunnels. By adjusting the position of the current limiting rod in the pipe sleeve, the actual length of water passing through the pipe sleeve can be changed, so that the two groups of atomizing pipes produce a uniform "single layer" water mist wall, and a waterless area can be opened on the water mist wall, which can greatly reduce the waste of water resources. The present invention has a simple structure, stable support, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of a dust suppression device for coal mines provided by the present invention;

[0029] Figure 2 It is a structural schematic diagram of a lifting support assembly of a water supply pipeline provided in a dust suppression device for a coal mine provided by the present invention;

[0030] Figure 3 It is a cross-sectional schematic diagram of a lifting support assembly in a dust suppression device for a coal mine provided by the present invention, wherein a limit block and an anchor nail are hidden;

[0031] Figure 4 yes Figure 2 The enlarged view of point A in the middle;

[0032] Figure 5 It is a schematic diagram of an atomizing dust suppression component and a part of a lifting frame in a dust suppression device for a coal mine provided by the present invention;

[0033] Figure 6 It is a structural schematic diagram of an end support block in a dust suppression device for coal mines provided by the present invention;

[0034] Figure 7 It is a bottom view schematic diagram of an atomizing dust suppression assembly in a dust suppression device for a coal mine provided by the present invention, wherein one end of two current limiting rods in the pipe sleeves are aligned;

[0035] Figure 8 It is a bottom view schematic diagram of an atomizing dust suppression assembly in a dust suppression device for a coal mine provided by the present invention, wherein the interlaced area of ​​two current limiting rods is a water-free area;

[0036] Fig. 9 It is a schematic diagram of the connection between a water supply pipeline and an atomizing pipe in a dust suppression device for a coal mine provided by the present invention;

[0037] Fig.10 It is a partial schematic diagram of one end of the atomizing pipe connected to the water supply pipeline in a dust suppression device for coal mines provided by the present invention;

[0038] Fig.11 It is a structural schematic diagram of a lateral support assembly in a dust suppression device for coal mines provided by the present invention;

[0039] Fig.12 It is a partial schematic diagram of a linkage assembly in a dust suppression device for a coal mine provided by the present invention;

[0040] Fig.13 It is a structural schematic diagram of a top covering component covering a lateral supporting component in a dust suppression device for a coal mine provided by the present invention;

[0041] Fig.14 It is a schematic diagram of an explosion of a top cover assembly in a dust suppression device for a coal mine provided by the present invention;

[0042] Fig.15 It is a schematic diagram of a side wing shielding assembly provided in a dust suppression device for a coal mine provided by the present invention, wherein the side wing shielding assembly is in a retracted state, and the left shielding piece is hidden, and the right shielding piece is retracted in the storage cavity;

[0043] Fig.16 It is a schematic diagram of a side wing shielding assembly provided in a dust suppression device for a coal mine provided by the present invention, wherein the side wing shielding assembly is in an unfolded state and the left shielding piece is hidden;

[0044] Fig.17 yes Fig.16 The enlarged view of point B in the middle;

[0045] Fig.18 The invention provides a schematic diagram of an L-shaped side wing support and a square hole socket in a dust suppression device for coal mines.

[0046] Explanation of reference numerals: 100, lifting support assembly; 110, base; 111, piston chamber; 112, water storage chamber; 113, storage chamber; 114, first water inlet and outlet nozzle; 115, second water inlet and outlet nozzle; 120, mounting plate; 121, fixing frame; 122, fixing block; 130, lifting frame; 131, box; 132, piston block; 133, top seat; 134, mounting groove; 135, positioning groove ; 136, limit block; 137, anchor nail; 200, atomizing dust suppression assembly; 201, atomizing nozzle; 203, sliding hole; 204, through hole; 205, nozzle clearance port; 206, locking bolt; 207, slider; 210, first atomizing pipe; 211, first pipe sleeve; 212, first flow limiting rod; 213, first end support; 220, second atomizing pipe; 221, second pipe sleeve; 222, second flow limiting rod; 223, second end support; 224, water inlet hole; 230, water supply pipeline; 231, first water supply joint; 232, second water supply joint; 233, main water supply joint; 234, second connecting pipe; 235, first connecting pipe; 300, transverse support assembly; 310, crossbeam; 311, first slide groove; 312, second slide groove; 320, telescopic member; 330, slide rail; 40 0. linkage assembly; 401. gear; 402. rack; 403. rotary drive; 404. connecting plate; 405. drive mounting frame; 510. L-shaped side wing support; 511. L-shaped base frame; 512. telescopic frame; 513. plug-in square head; 520. square hole socket; 530. side guard plate; 540. shielding member; 601. first support member; 602. second support member; 603. covering member. DETAILED DESCRIPTION

[0047] The present invention will be described in further detail below in conjunction with the accompanying drawings, wherein the same components are represented by the same reference numerals.

[0048] A dust suppression device for coal mines, such as Figure 1 As shown, it includes an atomizing dust suppression assembly 200 and a lifting support assembly 100 .

[0049] The lifting support assembly 100 is provided with two groups for supporting the atomizing dust suppression assembly 200, such as Figure 2 and Figure 3As shown, the lifting support assembly 100 includes a base 110 and a lifting frame 130. The lifting frame 130 is slidably connected to the base 110, and the sliding direction is vertical. The lifting frame 130 includes a hollow box body 131, a piston block 132 fixedly connected to the bottom end of the box body 131, and a top seat 133 fixedly connected to the top end of the box body 131. The base 110 is provided with a piston chamber 111 adapted to the piston block 132, and the piston block 132 is slidably arranged in the piston chamber 111 along the vertical direction. The base 110 is provided with a first water inlet and outlet nozzle 114 connected to the bottom of the piston chamber 111 for filling and draining water into the piston chamber 111. In order to improve the stability between the lifting frame 130 and the base 110, a plurality of positioning grooves 135 can be provided on the side wall of the box body 131, and the plurality of positioning grooves 135 are evenly arranged in the vertical direction; a mounting plate 120 is provided on the top of the base 110, combined with Figure 4 As shown, a fixing frame 121 is fixedly arranged on the mounting plate 120, and a socket is provided on the fixing frame 121, and a fixing block 122 is horizontally slidably arranged in the socket. When the fixing block 122 is inserted into the socket and one of the positioning slots 135 at the same time, the base 110 is locked with the lifting frame 130. In order to facilitate the removal of the fixing block 122, a handle can be installed on the fixing block 122. In order to further improve the stability of the lifting support assembly 100, a water storage chamber 112 for storing counterweight water can also be provided on the base 110, and a plurality of anchors 137 for anchoring the top wall of the mine tunnel are provided on the top of the lifting frame 130. The water storage chamber 112 can also be used as a temporary water source container or a temporary drainage container; a second water inlet and outlet nozzle 115 connected to the bottom of the water storage chamber 112 is provided on the base 110 for filling and draining water into the water storage chamber 112.

[0050] like Figure 5 As shown, the atomizing dust suppression assembly 200 includes two groups of atomizing pipes and a water supply pipeline 230 for supplying water to the atomizing pipes. The two groups of atomizing pipes have similar structures, both including a pipe sleeve, an end support fixed at one end of the pipe sleeve, and a flow limiting rod penetrating the end support and slidably connected to the pipe sleeve. A plurality of atomizing nozzles 201 are evenly arranged on the pipe sleeve along its length direction. The peripheral wall of the flow limiting rod is sealed with the inner wall of the pipe sleeve. The flow limiting rod in the pipe sleeve can block the flow of water, so that the atomizing nozzles 201 located on the peripheral side of the flow limiting rod are not connected to the water source. By adjusting the position of the flow limiting rod, the effective water spraying length of the atomizing pipe can be adjusted. The end support mainly supports the two groups of pipe sleeves to each other and determines the spacing between the two groups of pipe sleeves. As shown Figure 6As shown, the end support is provided with a sliding hole 203 adapted to the outer wall of the tube sleeve, and a through hole 204 for the flow limiting rod to pass through. The following serial numbers "first" and "second" are used to distinguish the structures of the two groups of atomizer tubes and to explain the specific connection between the two groups of atomizer tubes: the first atomizer tube 210 and the second atomizer tube 220 are arranged horizontally and parallel, and the two are facing opposite directions. The first tube sleeve 211 passes through the sliding hole 203 on the second end support 223 and is slidably connected to the second end support 223. The second tube sleeve 221 passes through the sliding hole 203 on the first end support 213 and is slidably connected to the first end support 213. The two groups of atomizer tubes between the first end support 213 and the second end support 223 are in a staggered state, as shown in FIG. Figure 7 As shown, when the first flow-limiting rod 212 and the second flow-limiting rod 222 are aligned at one end in the tube sleeve, the water mist sprayed from the two groups of atomizing tubes is just connected and does not overlap; Figure 8 As shown, when the first flow limiting rod 212 and the second flow limiting rod 222 are staggered, the atomizing nozzles 201 in the staggered area are not supplied with water, forming a waterless area. Figure 6 As shown, in order to ensure that the atomizing nozzle 201 does not affect the relative sliding of the pipe sleeve and the end support, a nozzle clearance port 205 connected to the sliding hole 203 is provided on the bottom surface of the end support to allow the atomizing nozzle 201 to pass. In this embodiment, a sealing ring (not shown in the figure) is embedded in the end of the flow limiting rod located in the pipe sleeve to ensure the sealing between the flow limiting rod and the pipe sleeve. This sealing can also adopt other existing technologies, which will not be repeated here.

[0051] Combination Figure 2 and Fig. 9 As shown, the water supply pipeline 230 includes a first water supply joint 231, a second water supply joint 232, a main water supply joint 233, a first connecting pipe 235 and a second connecting pipe 234. The main water supply joint 233 is used to connect to a water source, the first water supply joint 231 is used to supply water to the first atomizing pipe 210, and the second water supply joint 232 is used to supply water to the second atomizing pipe 220. The first water supply joint 231 is connected to the main water supply joint 233 through the first connecting pipe 235, and the second water supply joint 232 is connected to the main water supply joint 233 through the second connecting pipe 234. In order to facilitate the arrangement of the pipeline, it is preferred to arrange the first water supply joint 231 and the second water supply joint 232 on the same side of the atomizing dust suppression assembly 200. Specifically, the first atomizing pipe 210 is supplied with water from an end of the first pipe sleeve 211 away from the end support, and the first pipe sleeve 211 is connected to the first water supply joint 231 and fixed; as shown in FIG. Fig.10As shown, a water inlet hole 224 connecting the two ends of the second flow-limiting rod 222 is provided, and one end of the second pipe sleeve 221 away from the second end support 223 is sealed, and the second atomizing pipe 220 supplies water to the second pipe sleeve 221 through the second flow-limiting rod 222, and the second water supply connector 232 is arranged at the free end of the second flow-limiting rod 222 and connected to the water inlet hole 224. In order to reduce the exposed pipelines, the first water supply connector 231 and the main water supply connector 233 can be fixed on the side wall of the box body 131 near the water inlet end, and a through hole for the second connecting pipe 234 to pass through is provided on the side wall of the box body 131, and the first connecting pipe 235 and part of the second connecting pipe 234 are arranged in the box body 131. The second pipe sleeve 221 is fixedly connected to the other box 131. In this embodiment, a joint with the same structure as the first water supply joint 231 is provided on the other box 131, which is used to fix the second pipe sleeve 221 to the box 131. The difference is only that water cannot flow through it, which is convenient for the lifting support assembly 100 to support the atomizing dust suppression assembly 200, and also convenient for the disassembly and installation of the atomizing pipe. It should be noted that in order to ensure that the movement of the second limiting rod 222 is not restricted, the second connecting pipe 234 needs to be set as a hose, while the first connecting pipe 235 has no such restriction.

[0052] Although the support of the atomizing dust suppression assembly 200 can be achieved by relying only on the connection between the pipe sleeve and the box body 131, in order to ensure the stability of the connection, such as Figure 1 and Fig.11 As shown, it is best to set a transverse support assembly 300 between the two groups of lifting support assemblies 100. The transverse support assembly 300 is arranged above the atomizing dust suppression assembly 200, and includes a crossbeam 310. The two ends of the upper surface of the crossbeam 310 are fixedly provided with slide rails 330. A telescopic member 320 is slidably provided on the slide rails 330. The free end of the telescopic member 320 is set in a T shape. The top seat 133 is provided with a mounting groove 134 that matches the shape of the free end of the telescopic member 320. The free end of the telescopic member 320 is clamped in the mounting groove 134. A first slide groove 311 parallel to the atomizing pipe is provided on the bottom surface of the crossbeam 310, as shown in FIG. Figure 6 As shown, the first end support 213 and the second end support 223 are respectively fixed with a slider 207 adapted to the first slide groove 311, and the end support is slidably connected to the cross beam 310 through the first slide groove 311 and the slider 207. The two end supports are respectively threadedly connected with a locking bolt 206, which passes through the end support and abuts against the cross beam 310, and is used to lock the two pipe sleeves and the cross beam 310 after adjusting the overall span of the atomizing dust suppression assembly 200.

[0053] In order to facilitate the coordinated adjustment of the two current limiting rods, a linkage assembly 400 may be provided on the lateral support assembly 300, such as Figure 1 and Fig.12As shown, the linkage assembly 400 includes a gear 401 rotatably connected to the crossbeam 310, two racks 402 meshing with the gear 401, and a rotary driver 403 driving the gear 401 to rotate. A driver mounting frame 405 is fixedly connected to the crossbeam 310, and the rotary driver 403 is fixedly arranged on the driver mounting frame 405. Fig.11 As shown, the two sides of the crossbeam 310 are respectively provided with second slide grooves 312 parallel to the first slide grooves 311, and the two racks 402 are respectively provided with protrusions adapted to the second slide grooves 312, as shown in FIG. Fig.10 As shown, one end of the rack 402 is fixedly connected to the corresponding current limiting rod through a connecting plate 404. The two current limiting rods can be driven to move closer or farther synchronously by rotating the rotary drive 403 to form a waterless zone or close the waterless zone. It is preferred that the rack 402 and the current limiting rod are set to the same length, so that the rack 402 can intuitively indicate the position of the end of the current limiting rod in the pipe sleeve. In order to prevent the linkage assembly 400 from colliding with the top of the mine tunnel when the lifting support assembly 100 is raised, as shown in FIG. Figure 2 As shown, a limit block 136 may be provided on the top seat 133 , the top surface of the limit block 136 is higher than the linkage assembly 400 , and the anchor 137 is fixed above the limit block 136 .

[0054] In order to facilitate the passage of personnel and equipment, the rotation driver 403 can be started and shut down by automatic identification. An identification device and a controller are set to identify the personnel and equipment to be passed. The identification device is connected to the controller signal, and the output end of the controller is connected to the rotation driver 403 signal. The identification device can adopt any information collection device that perceives people and objects, such as proximity switches, pressure sensors, cameras, etc. The controller processes the collected information to obtain a control signal to control the rotation driver 403 to perform forward, pause, reverse and other actions. The identification of personnel and equipment and the information processing of the controller can adopt existing technologies, which will not be repeated here.

[0055] During installation, first set the positions of the two sets of lifting support assemblies 100, adjust the span of the transverse support assembly 300, and erect the transverse support assembly 300 on the two sets of lifting support assemblies 100, then adjust the relative positions of the two pipe sleeves of the atomizing dust suppression assembly 200, and connect the pipe sleeves with the adjacent box 131, connect the first water supply joint 231 with the first atomizing pipe 210, connect the second water supply joint 232 with the second flow limiting pipe, tighten the locking bolt 206, and lock the relative positions of the two pipe sleeves and the crossbeam 310. Adjust the initial positions of the two flow limiting rods so that their ends located in the pipe sleeves are aligned. Water is injected into the piston chamber 111 through the first water inlet and outlet nozzle 114. One water pump and a water distributor can be used to inject water into the two piston chambers 111 synchronously, or two water pumps can be used to inject water into the two piston chambers 111 synchronously, so that the two lifting frames 130 are raised synchronously until the limit block 136 contacts the top wall of the mine tunnel, and the water injection is stopped. The fixed block 122 is inserted into the appropriate positioning groove 135 (this process allows the lifting frame 130 to move downward to a certain extent, as long as the anchor 137 is partially inserted into the top wall of the mine tunnel). Depending on the overall stability of the device, the piston chamber 111 is drained or the water storage chamber 112 is stored. The main water supply joint 233 is connected to the water source and is ready to start working. Before use, the required width of the waterless zone is set to determine the action of the rotary drive 403 when performing the operation of forming the waterless zone. The rotary drive 403 needs to rotate forward for a preset time or a preset number of turns to open the waterless zone, pause for a period of time, wait for personnel and equipment to pass, and then the rotary drive 403 is reversed for a preset time or number of turns to close the waterless zone.

[0056] like Fig.13 and Fig.14As shown, in order to prevent dust, coal ash and other impurities on the top of the mine tunnel from falling onto the lateral support assembly 300, the linkage assembly 400 and the atomizing dust suppression assembly 200, a top cover assembly can also be provided, and the top cover assembly includes a first support member 601 fixed on the top seat 133, a second support member 602 fixed on the lateral support assembly 300, and a cover member 603 mounted on the first support member 601 and the second support member 602. The cover member 603 can be a flexible cloth, a film, or a rigid lightweight shell. The cover member 603 covers the lateral support assembly 300 and the atomizing dust suppression assembly 200 from above. In this embodiment, the first support member 601 and the second support member 602 are formed by bending a rod and are roughly in the shape of a "door". In addition to being a supporting structure, the first support member 601 and the second support member 602 can also be used as a handle during transportation. Of course, the first support member 601 and the second support member 602 can also be other shapes as long as they can support the shielding member 540. It should be noted that in order to adapt to the adjustment of the lateral width of the device, when the covering member 603 is made of flexible material, the part of the covering member 603 that cannot be flattened can be stacked or partially overlapped; when a rigid material is used, only two pieces can be set to partially overlap, and this solution is adopted in this embodiment.

[0057] like Fig.15 and Fig.16 As shown, in order to adapt to larger mine tunnels, side wing shielding components can also be set up to replace part of the water mist wall to block the diffusion of coal dust. Fig.17 and Fig.18As shown, the side wing shielding assembly includes a retractable L-shaped side wing support 510, a square hole socket 520 fixedly arranged on the lifting frame 130, and a flexible shielding member 540. The L-shaped side wing support 510 includes an L-shaped base frame 511, a plug-in square head 513, and a telescopic frame 512. The L-shaped base frame 511 is composed of two parallel L-shaped rods and a crossbar connecting the two L-shaped rods. One end of the L-shaped rod and the plug-in square head 513 is recorded as a connecting end, and the other end is recorded as a free end. The telescopic frame 512 is arranged at the free end of the L-shaped rod. The telescopic frame 512 is a U-shaped frame, and its two arms of the U are respectively plugged into the two L-shaped rods. In this embodiment, the telescopic frame 512 is provided with two levels. The plug-in square head 513 is fixedly connected to the surfaces of the two L-shaped rods facing each other. The square hole socket 520 is provided with a square hole adapted to the plug-in square head 513. The two plug-in square heads 513 are inserted into the square hole socket 520 from opposite sides. When the plug-in square head 513 is inserted into the square hole socket 520 at different angles, the L-shaped side wing support 510 has different postures. When the side wing shielding assembly is not needed, the telescopic frame 512 of the L-shaped side wing support 510 is set downward and is in a retracted state; when the side wing shielding assembly is needed, the insertion angle of the plug-in square head 513 is changed to make the telescopic frame 512 of the L-shaped side wing support 510 horizontal, and the L-shaped side wing support 510 is in an unfolded state. The L-shaped side wing support 510 is horizontally extended by moving the telescopic frame 512 to expand the horizontal shielding and adapt to the size of the mine tunnel. When the shielding member 540 is fixed on the L-shaped base frame 511 and covers the L-shaped side wing support 510. A storage cavity 113 can be set on the base 110 to store the shielding member 540. A side guard plate 530 is fixedly set on the side wing shielding assembly, and the side guard plate 530 is located on the side of the L-shaped base frame 511 away from the telescopic frame 512.

[0058] When changing the insertion angle of the plug-in square head 513, the two L-shaped rods are dynamically pulled to elastically deform and move away from each other, the plug-in square head 513 is pulled out of the square hole socket 520, the L-shaped side wing support 510 is rotated 90° around the axis of the plug-in square head 513, the L-shaped rod is loosened to reset it, and the plug-in square head 513 is inserted back into the square hole socket 520.

[0059] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention.

Claims

1. A dust suppression device for coal mines, characterized in that: The invention comprises an atomizing dust suppression component (200) and two lifting support components (100) for supporting the atomizing dust suppression component (200), wherein the atomizing dust suppression component (200) comprises two groups of atomizing pipes and a water supply pipeline (230) for supplying water to the atomizing pipes, wherein the atomizing pipes comprise a pipe sleeve, a flow limiting rod and an end support member fixed at one end of the pipe sleeve, wherein a plurality of atomizing nozzles (201) are evenly arranged on the pipe sleeve along its length direction, wherein the flow limiting rod passes through the end support member and is slidably connected to the pipe sleeve, and a peripheral wall of the flow limiting rod is sealed with an inner wall of the pipe sleeve; the two groups of atomizing pipes are arranged in parallel and face opposite directions, wherein a sliding hole (203) is provided on the end support member, wherein the pipe sleeves of adjacent atomizing pipes are slidably arranged in the sliding hole (203), wherein a nozzle yielding opening (205) communicating with the sliding hole (203) is provided on the bottom surface of the end support member, and an end of the pipe sleeve away from the end support member is respectively fixed to one of the lifting support components (100) The invention also comprises a transverse support assembly (300) arranged between the two lifting support assemblies (100) and located above the atomizing dust suppression assembly (200), wherein the transverse support assembly (300) comprises a crossbeam (310) and a telescopic member (320) slidably connected to both ends of the crossbeam (310), wherein the telescopic member (320) is detachably fixedly connected to the lifting support assembly (100), and the end support member is slidably connected to the crossbeam (310); a linkage assembly (400) is arranged on the transverse support assembly (300), wherein the linkage assembly (400) comprises a gear (401) rotatably connected to the crossbeam (310), two racks (402) meshing with the gears (401), and a rotary driver (403) driving the gear (401) to rotate, wherein the two racks (402) are respectively fixedly connected to one of the flow limiting rods and slidably connected to the crossbeam (310); and the atomizing pipe is a rigid straight pipe.

2. The dust suppression device for coal mines according to claim 1, characterized in that: It also includes a controller and an identification device for identifying people and equipment to be passed, the identification device is connected to the controller by signal, and the output end of the controller is connected to the rotation driver (403) by signal.

3. The dust suppression device for coal mine according to claim 1, characterized in that: The invention also comprises a top covering assembly, wherein the top covering assembly comprises a first supporting member (601) fixed to the top of the lifting supporting member (100), a second supporting member (602) fixed to the lateral supporting member (300), and a covering member (603) mounted on the first supporting member (601) and the second supporting member (602), wherein the covering member (603) covers the lateral supporting member (300) and the linkage assembly (400) from above.

4. The dust suppression device for coal mines according to claim 1, characterized in that: The lifting support assembly (100) comprises a base (110) and a lifting frame (130) vertically slidably connected to the base (110); a piston cavity (111) is provided on the base (110); a piston block (132) adapted to the piston cavity (111) is provided at the bottom of the lifting frame (130); a first water inlet and outlet nozzle (114) connected to the bottom of the piston cavity (111) is provided on the base (110); a plurality of positioning grooves (135) are evenly arranged on the lifting frame (130) in the vertical direction; a fixing block (122) is horizontally slidably arranged on the base (110); when the fixing block (122) is inserted into the positioning groove (135), the base (110) and the lifting frame (130) are locked.

5. The dust suppression device for coal mines according to claim 4, characterized in that: The base (110) is provided with a water storage chamber (112); and the top of the lifting frame (130) is provided with an anchor nail (137).

6. The dust suppression device for coal mines according to claim 4, characterized in that: The water supply pipeline (230) comprises a first water supply joint (231), a second water supply joint (232), a main water supply joint (233), a first connecting pipe (235) and a second connecting pipe (234); the first water supply joint (231) is connected to the pipe sleeve of one of the atomizing pipes; the flow limiting rod of the other atomizing pipe is provided with a water inlet hole (224) connected to both ends of the flow limiting rod; the second water supply joint (232) is connected to the water inlet hole (2 ... ) is connected to the main water supply joint (233) through a first connecting pipe (235), and the second water supply joint (232) is connected to the main water supply joint (233) through a second connecting pipe (234). The lifting frame (130) comprises a hollow box body (131), the first water supply joint (231) and the main water supply joint (233) are fixedly arranged on the side wall of the box body (131), and the first connecting pipe (235) and a part of the second connecting pipe (234) are located in the box body (131).

7. The dust suppression device for coal mines according to claim 1, characterized in that: The invention also comprises a side wing shielding assembly, which comprises a retractable L-shaped side wing support member (510), a square hole socket (520) fixedly arranged on the lifting support assembly (100), and a flexible shielding member (540); the L-shaped side wing support member (510) comprises an L-shaped base frame (511), a plug-in square head (513) fixed at one end of the L-shaped base frame (511) and adapted to the square hole socket (520), and a retractable frame (512) slidably arranged at the other end of the L-shaped base frame (511); and the shielding member (540) is fixed on the L-shaped base frame (511) and covers the L-shaped side wing support member (510).

8. The dust suppression device for coal mines according to claim 7, characterized in that: A side guard plate (530) is fixedly arranged on the side wing shielding assembly, and the side guard plate (530) is located on a side of the L-shaped base frame (511) away from the telescopic frame (512).

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