A dust suppression device and method for coal mine excavation

Abstract

The present invention relates to the field of coal mine excavation technology, and specifically to a dust suppression device and method for coal mine excavation, comprising a base, wherein the left and right sides of the top of the base are respectively fixedly connected with a lifting mechanism, the tops of the two lifting mechanisms are fixedly connected with the dust suppression device, and the rear side of the dust suppression device is fixedly connected with a water supply device. The present invention is provided with a dust suppression mechanism, a telescopic baffle and an atomizing nozzle, which can effectively form a dust barrier during coal mine excavation operations to reduce the harm of dust to the environment and workers. At the same time, through the control of a screw motor, the dust suppression device can adjust the overall height according to the specific conditions of the working environment to ensure the maximization of the dust suppression effect, so that the dust suppression mechanism can be flexibly expanded and retracted, ensuring that the dust barrier can be quickly and effectively formed during the operation, and a stable water source is provided to the atomizing nozzle through the water supply device, so that the atomizing nozzle can continuously spray water mist.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining, and more particularly to a dust suppression device and method for coal mining. Background Art

[0002] It is an area where humans mine coal resources in coal-rich mining areas, which is generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, it is generally chosen to dig tunnels underground to mine coal, which is an underground coal mine. When the coal seam is very close to the surface, it is generally chosen to directly strip the surface soil layer to mine coal, which is an open-pit coal mine. The vast majority of coal mines in my country are underground coal mines. The scope of coal mines includes a large area above and below the ground and related facilities. Coal mines are reasonable spaces excavated by humans when digging coal-rich geological strata, usually including tunnels, shafts, and mining faces. Coal is the most important solid fuel and a type of combustible organic rock.

[0003] According to the patent document: CN117685038A, a dust suppression device for coal mine excavation is disclosed, which belongs to the technical field of coal mine excavation; it includes two side plates arranged on the left and right, a telescopic structure is connected between the two side plates, a winding device is connected between the two side plates, a water spray pipe is wound on 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, and the two ends of the water spray pipe are laid along the two side plates. Atomizing nozzles for spraying water vapor are equidistantly installed on the water spray pipe. The spraying directions of the atomizing nozzles at different positions are different, and a water mist wall that blocks dust is formed by the spraying of a plurality of atomizing nozzles; a shielding plate with a door-shaped structure is installed on the top of the side plate through symmetrical rotation of an axle pin, and the two shielding plates are spliced ​​together to shield the atomizing nozzle, and are used for workers to pass through the door-shaped structure of the shielding plate; the present invention solves the problem of insufficient dust suppression in mines;

[0004] Nowadays, relevant dust suppression equipment is used in coal mining to reduce the amount of coal dust at the work site. However, although the prior art provides a dust suppression device for coal mining as described in CN117685038A, there are still some challenges and problems in actual use. For example, the device mainly relies on water mist to block dust, and relies on shielding plates to block the water mist to facilitate the passage of people. However, in some cases, the coverage of the water mist may not be wide enough, resulting in a large amount of dust in some areas. At the same time, although the design of the shielding plate is convenient for people to pass through, the opening and closing and adjustment of the shielding plate before and after the people pass through require manual operation, which will consume a certain amount of time and manpower during the operation process. At the same time, the people will be sprayed with water mist because the operating position is close to the water mist. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a dust suppression device for coal mine excavation. The technical problem to be solved by the present invention is that the coverage of the water mist may not be wide enough, resulting in a large amount of dust still existing in some areas; at the same time, although the design of the baffle is convenient for people to pass through, the opening and closing and adjustment of the baffle before and after the people pass through require manual operation, which will consume a certain amount of time and manpower during the operation process. At the same time, because the operating position is close to the water mist, the people will be sprayed with water mist.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A dust suppression device for coal mine excavation comprises a base, the left and right sides of the top of the base are respectively fixedly connected with lifting mechanisms, the tops of the two lifting mechanisms are fixedly connected with the dust suppression device, and the rear side of the dust suppression device is fixedly connected with a water passing device;

[0008] The dust suppression device comprises a dust suppression mechanism shell, and a dust suppression rod is arranged on the inner wall of the dust suppression mechanism shell.

[0009] As a further solution of the present invention: the dust suppression mechanism casing includes a casing body, a connecting plate is fixedly connected to the left bottom of the casing body, a turntable placement plate is fixedly connected to the left side of the connecting plate, a motor placement bin is fixedly connected to the left side of the casing body, a motor is fixedly connected to the bottom of the inner wall of the motor placement bin, a turntable is fixedly connected to the output end of the motor, the right side of the turntable is rotatably connected to the left side of the turntable placement plate, and the outer wall of the turntable is covered with a track.

[0010] As a further solution of the present invention: a slide groove is provided on the top of the shell body, a third turntable connecting frame is fixedly connected to the left side of the front side of the shell body, the inner wall of the third turntable connecting frame is rotatably connected to the third turntable, the top of the outer wall of the third turntable is rotatably connected to the side of the outer wall on the front side of the track away from the turntable, the rear side of the shell body is rotatably connected to the second turntable, the top of the outer wall of the second turntable is rotatably connected to the side of the outer wall on the rear side of the track away from the turntable, the right side of the shell body is fixedly connected to the fourth turntable connecting block, the top of the fourth turntable connecting block is rotatably connected to the fourth turntable, and the outer wall of the fourth turntable is sleeved on the inner wall on the side of the track away from the turntable.

[0011] As a further scheme of the present invention: the dust suppression rod includes a dust suppression rod body, the left and right ends of the dust suppression rod body are respectively fixedly connected to the left and right sides of the inner wall of the outer shell body, the left and right sides of the outer wall of the dust suppression rod body are respectively slidably connected with dust suppression mechanisms, the opposite tops of the two dust suppression mechanisms are fixedly connected with sliding rods, the tops of the two sliding rods extend to the top of the outer shell body through sliding grooves and the front sides are fixedly connected with front moving rods, the inner wall of the front side of the front moving rod on the left side is slidably connected to the front outer wall of the track, and the inner wall of the front side of the front moving rod on the right side is fixedly connected to the front outer wall of the track, the front sides of the two front moving rods are fixedly connected with telescopic baffle connecting rods, the bottoms of the two telescopic baffle connecting rods are fixedly connected with telescopic baffles, and the front and rear sides of the bottoms of the two telescopic baffles are fixedly connected with telescopic baffle sliders.

[0012] As a further solution of the present invention: a rear moving rod is fixedly connected to the top of the left sliding rod, and a rear inner wall of the rear moving rod is fixedly connected to a rear outer wall of the crawler track.

[0013] As a further solution of the present invention: the two dust suppression mechanisms each include multiple groups of sliding shafts, wherein the front and rear sides of the bottom of one group of sliding shafts are respectively rotatably connected with rotating rods, the bottoms of the opposite surfaces of the two rotating rods are rotatably connected with rotating rod hinge blocks, the front and rear sides of the left side of the inner wall of the rotating rod hinge block are respectively rotatably connected with second rotating rods, the tops of the opposite surfaces of the two second rotating rods are rotatably connected with second sliding shafts, the structure of the second sliding shafts is the same as that of the sliding shafts, the tops of the opposite surfaces of the two second rotating rods are rotatably connected with third rotating rods, and the multiple groups of dust suppression mechanisms are hinged to another group through the two third rotating rods.

[0014] As a further solution of the present invention: the bottoms of the multiple rotating rod hinge blocks are fixedly connected with atomizing nozzle connecting blocks, the bottoms of the multiple atomizing nozzle connecting blocks are fixedly connected with atomizing nozzles, and the rear sides of the multiple atomizing nozzle connecting blocks are fixedly connected with water pipes.

[0015] As a further solution of the present invention: the water passing device includes a water passing device bottom plate, the front side of the water passing device bottom plate is fixedly connected to the rear side of the outer shell body, the top of the water passing device bottom plate is fixedly connected to the water passing device body, the left and right sides of the top of the water passing device body are respectively fixedly connected to the water pipe structure of the water passing device, the left and right sides of the bottom of the water passing device bottom plate are fixedly connected to multiple groups of water pipe limit blocks, the inner walls of the multiple groups of water pipe limit blocks are slidably connected to the outer walls of multiple water pipes, and the rear side of the water passing device body is fixedly connected to one end of the multiple water pipes away from the atomizing nozzle connection block.

[0016] As a further solution of the present invention: the base comprises a base body, the top and rear sides of the base body are respectively provided with base slide grooves, and the left and right sides of the inner walls of the two base slide grooves are respectively slidably connected to the outer walls of the two sets of telescopic baffle sliders;

[0017] The two lifting mechanisms each include a screw motor connecting block, the bottoms of the two screw motor connecting blocks are respectively fixedly connected to the left and right sides of the top of the base body, the opposite surfaces of the two screw motor connecting blocks are fixedly connected to the screw motors, the output ends of the two screw motors are fixedly connected to the screw rods, the tops of the two screw rods are rotatably connected to the top plates, the bottoms of one side of the two top plates are fixedly connected to the sliding column outer frame connecting plates, the front and rear sides of the opposite surfaces of the two sliding column outer frame connecting plates are fixedly connected to the sliding column outer frames, the opposite surfaces of the two groups of sliding column outer frames are hollow designs, the bottoms of the two groups of sliding column outer frames are fixedly connected to the top of the base body, the inner walls of the two groups of sliding column outer frames are slidably connected with sliding columns, the opposite surfaces of the two groups of sliding columns are fixedly connected to the C-shaped transmission plates and extend to the outer wall of the sliding column outer frame, the inner walls of the middle parts of the two groups of C-shaped transmission plates are respectively threadedly connected to the outer walls of the two screw rods, and the tops of the two groups of sliding columns are respectively fixedly connected to the left and right sides of the bottom of the dust suppression mechanism shell.

[0018] In addition, the present invention also relates to a dust suppression device and method for coal mine excavation, comprising the following steps:

[0019] Step 1: Before starting coal mining operations, first adjust the overall height of the dust suppression device by controlling the rotation direction and speed of the two screw motors according to the specific conditions of the working environment to ensure that the atomizing nozzles of the dust suppression mechanism can cover the working area and form an effective dust barrier.

[0020] Step 2: After the height of the dust suppression device is adjusted, start the motor to drive the turntable and the crawler to rotate, driving the two front moving rods and the telescopic baffle connecting rods and telescopic baffles connected thereto to move relative to each other along the slide groove, so that the two telescopic baffles are tightly together. At the same time, the dust suppression mechanism slides along the main body of the dust suppression rod and unfolds.

[0021] Step 3: After the dust suppression mechanism is deployed, start the water supply device to provide a stable water source for multiple water pipes through the main body of the water supply device to ensure that the atomizing nozzle can continuously spray water mist to form a solid dust barrier and effectively prevent the spread of dust.

[0022] Step 4: When the staff needs to pass through the dust suppression device, reverse the motor to drive the turntable and crawler to rotate in opposite directions, so that the two retractable baffles gradually separate, leaving space for the staff to pass. At the same time, the dust suppression mechanism also slides along the main body of the dust suppression rod under the drive of the motor and retracts to ensure the safe passage of the staff.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention is equipped with a dust suppression mechanism, a telescopic baffle and an atomizing nozzle, which can effectively form a dust barrier during coal mine excavation operations to reduce the harm of dust to the environment and workers. At the same time, through the control of the screw motor, the dust suppression device can adjust the overall height according to the specific conditions of the working environment to ensure the maximization of the dust suppression effect.

[0025] 2. The present invention is provided with a dust suppression mechanism. During the process of expanding and contracting the dust suppression mechanism, the dust suppression mechanism can be flexibly expanded and contracted by providing a sliding shaft, a rotating rod, a second rotating rod and a third rotating rod, thereby ensuring that a dust barrier can be quickly and effectively formed during the operation and providing a stable water source for the atomizing nozzle through the water supply device, so that the atomizing nozzle can continuously spray water mist.

[0026] 3. The present invention is provided with a retractable baffle, so that the dust suppression device can quickly close the working area when needed to reduce the spread of dust. At the same time, when the staff needs to pass, it can also be quickly opened to provide space for the staff to pass. The design of the retractable baffle not only improves the flexibility of the use of the dust suppression device, but also increases the safety of the dust suppression device, ensuring the safety of the staff during the operation.

[0027] 4. The present invention is provided with a sliding column outer frame, a sliding column, a C-shaped transmission plate and a screw motor. By controlling the rotation of the screw motor, the C-shaped transmission plate and the sliding column can be driven to slide in the sliding column outer frame, thereby realizing the lifting and lowering of the dust suppression mechanism. This design not only makes the lifting and lowering of the dust suppression mechanism more stable, but also can quickly adjust the height of the dust suppression device according to work needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the main three-dimensional structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the three-dimensional structure of the dust suppression mechanism and the water passing device of the present invention;

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure of the shell body of the present invention;

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of the dust suppression rod main body of the present invention;

[0032] Figure 5 It is a schematic diagram of a partial three-dimensional structure of the dust suppression mechanism of the present invention;

[0033] Figure 6 It is a schematic diagram of the three-dimensional structure of the water-passing device of the present invention;

[0034] Figure 7 It is a schematic diagram of the three-dimensional structure of the base and the lifting mechanism of the present invention.

[0035] In the figure: 1. base; 11. base body; 12. base slide; 2. lifting mechanism; 21. screw motor connection block; 22. screw motor; 23. screw; 24. top plate; 25. slide column outer frame connection plate; 26. slide column outer frame; 27. slide column; 28. C-shaped transmission plate; 3. dust suppression device; 31. dust suppression mechanism shell; 311. shell body; 312. connection plate; 313. turntable placement plate; 314. slide; 315. motor placement bin; 316. motor; 317. turntable; 318. crawler; 319. second turntable; 3110. third turntable connection frame; 3111. third turntable; 3112. fourth turntable connection block; 3113. The fourth turntable; 32, dust suppression rod; 321, dust suppression rod body; 322, dust suppression mechanism; 3221, sliding shaft; 3222, rotating rod; 3223, rotating rod hinge block; 3224, second rotating rod; 3225, second sliding shaft; 3226, third rotating rod; 3227, atomizing nozzle connecting block; 3228, atomizing nozzle; 3229, water pipe; 323, sliding rod; 324, rear moving rod; 325, front moving rod; 326, telescopic baffle connecting rod; 327, telescopic baffle; 328, telescopic baffle slider; 4, water passing device; 41, bottom plate of water passing device; 42, water pipe limit block; 43, water passing device body; 44, water pipe structure of water passing device. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] like Figure 1-7 As shown, the present invention provides a dust suppression device for coal mine excavation, including a base 1, the left and right sides of the top of the base 1 are respectively fixedly connected with lifting mechanisms 2, the tops of the two lifting mechanisms 2 are fixedly connected with dust suppression devices 3, and the rear side of the dust suppression device 3 is fixedly connected with a water passing device 4.

[0038] like Figure 2-6As shown, the dust suppression device 3 includes a dust suppression mechanism shell 31, the inner wall of the dust suppression mechanism shell 31 is provided with a dust suppression rod 32, the dust suppression mechanism shell 31 includes a shell body 311, the left bottom of the shell body 311 is fixedly connected with a connecting plate 312, the left side of the connecting plate 312 is fixedly connected with a turntable placement plate 313, the left side of the shell body 311 is fixedly connected with a motor placement bin 315, the inner bottom of the motor placement bin 315 is fixedly connected with a motor 316, the output end of the motor 316 is fixedly connected with a turntable 317, the right side of the turntable 317 is rotatably connected to the left side of the turntable placement plate 313, the outer wall of the turntable 317 is sleeved with a crawler track 318, the top of the shell body 311 is provided with a slide groove 314, the left side of the front side of the shell body 311 is fixed A third turntable connecting frame 3110 is connected, the inner wall of the third turntable connecting frame 3110 is rotatably connected to the third turntable 3111, the top of the outer wall of the third turntable 3111 is rotatably connected to the side of the outer wall of the front side of the crawler 318 away from the turntable 317, the rear side of the shell body 311 is rotatably connected to the second turntable 319, the top of the outer wall of the second turntable 319 is rotatably connected to the side of the outer wall of the rear side of the crawler 318 away from the turntable 317, the right side of the shell body 311 is fixedly connected to the fourth turntable connecting block 3112, the top of the fourth turntable connecting block 3112 is rotatably connected to the fourth turntable 3113, the outer wall of the fourth turntable 3113 is sleeved on the inner wall of the side of the crawler 318 away from the turntable 317, the dust suppression rod 32 includes a dust suppression rod body 321, and the dust suppression The left and right ends of the rod body 321 are respectively fixedly connected to the left and right sides of the inner wall of the shell body 311, and the left and right sides of the outer wall of the dust suppression rod body 321 are respectively slidably connected with dust suppression mechanisms 322, and the opposite tops of the two dust suppression mechanisms 322 are fixedly connected with sliding rods 323, and the tops of the two sliding rods 323 extend to the top of the shell body 311 through the sliding groove 314 and the front sides are fixedly connected with front moving rods 325, the inner wall of the front side of the left front moving rod 325 is slidably connected to the outer wall of the front track 318, and the inner wall of the front side of the right front moving rod 325 is fixedly connected to the front outer wall of the track 318, and the front sides of the two front moving rods 325 are fixedly connected with telescopic baffle connecting rods 326, and the bottoms of the two telescopic baffle connecting rods 326 are fixedly connected There is a telescopic baffle 327, and the front and rear sides of the bottom of the two telescopic baffles 327 are fixedly connected with a telescopic baffle slider 328, the top of the left slide bar 323 is fixedly connected with a rear moving rod 324, and the rear inner wall of the rear moving rod 324 is fixedly connected to the rear outer wall of the telescopic baffle slider 328. The two dust suppression mechanisms 322 include multiple groups of sliding shafts 3221, and the front and rear sides of the bottom of one group of sliding shafts 3221 are respectively rotatably connected with a rotating rod 3222, and the bottom of the opposite surface of the two rotating rods 3222 is rotatably connected with a rotating rod hinge block 3223, and the front and rear sides of the left side of the inner wall of the rotating rod hinge block 3223 are respectively rotatably connected with a second rotating rod 3224, and the top of the opposite surface of the two second rotating rods 3224 is rotatably connected with a second sliding shaft 3225.The structure of the second sliding shaft 3225 is the same as that of the sliding shaft 3221. The tops of the opposite surfaces of the two second rotating rods 3224 are rotatably connected to the third rotating rods 3226. The multiple dust suppression mechanisms 322 are hinged to the other group through the two third rotating rods 3226. The bottoms of the multiple rotating rod hinge blocks 3223 are fixedly connected to the atomizing nozzle connecting blocks 3227. The bottoms of the multiple atomizing nozzle connecting blocks 3227 are fixedly connected to the atomizing nozzles 3228. The rear sides of the multiple atomizing nozzle connecting blocks 3227 are fixedly connected to the water pipes 3229. The water passing device 4 includes a water passing device. The bottom plate 41, the front side of the water-passing device bottom plate 41 is fixedly connected to the rear side of the shell body 311, the top of the water-passing device bottom plate 41 is fixedly connected with the water-passing device body 43, the top left and right sides of the water-passing device body 43 are respectively fixedly connected with the water-passing device water pipe structure 44, the bottom left and right sides of the water-passing device bottom plate 41 are fixedly connected with multiple groups of water pipe limit blocks 42, the inner walls of the multiple groups of water pipe limit blocks 42 are slidably connected to the outer walls of multiple water pipes 3229, and the rear side of the water-passing device body 43 is fixedly connected to one end of the multiple water pipes 3229 away from the atomizing nozzle connection block 3227;

[0039] When dust suppression is performed, the dust suppression device 3 is started, and the motor 316 drives the turntable 317 to start rotating, thereby driving the crawler track 318 to rotate with the cooperation of the third turntable 3111, the second turntable 319 and the fourth turntable 3113. As the crawler track 318 moves, the sliding connection between the outer wall of the front crawler track 318 and the inner wall of the left front moving rod 325 and the fixed connection between the inner wall of the right front moving rod 325 and the front outer wall of the crawler track 318, as well as the inner wall of the rear moving rod 324 fixedly connected to the top of the left sliding rod 323, are fixedly connected to the rear outer wall of the crawler track 318, so that the two front moving rods 325 and the telescopic baffle connecting rod 326 and the telescopic baffle 327 connected thereto move relative to each other along the slide groove 314, so that the two telescopic baffles 327 are tightly attached together, and at the same time drive the dust suppression mechanism 322 to slide along the dust suppression rod body 321, and When the dust suppression mechanism 322 is unfolded, a certain angle is formed between the sliding shaft 3221 and the second sliding shaft 3225 through the hinged action of the plurality of third rotating rods 3226, the rotating rod 3222 and the second rotating rod 3224, thereby forming an unfolded dust suppression surface. As the dust suppression mechanism 322 is unfolded, the atomizing nozzle 3228 on the atomizing nozzle connecting block 3227 is also unfolded according to the unfolded dust suppression surface, and a stable water source is provided for the plurality of water pipes 3229 through the water supply device body 43 of the water supply device 4, ensuring that the atomizing nozzle 3228 can continuously spray water mist. The setting of the water pipe limit block 42 ensures the stability of the water pipe 3229 during the movement, so that it can be discharged in an orderly and neat manner. The unfolded dust suppression surface forms a solid dust-proof barrier through the atomizing nozzle 3228, effectively preventing the spread of dust.

[0040] When a worker needs to pass through, the motor 316 is reversed to drive the turntable 317 and the crawler 318 to rotate in the opposite direction. As the crawler 318 moves in the opposite direction, the two front moving rods 325 and the telescopic baffle connecting rods 326 and the telescopic baffle 327 connected thereto move relatively along the slide 314, so that the two telescopic baffles 327 are gradually separated, leaving space for the worker to pass through.

[0041] At the same time, the dust suppression mechanism 322 also slides along the dust suppression rod body 321 and shrinks under the drive of the motor 316. During the shrinkage process, through the hinge action of multiple third rotating rods 3226, the rotating rod 3222 and the second rotating rod 3224, the angle between the sliding shaft 3221 and the second sliding shaft 3225 of the dust suppression mechanism 322 gradually decreases, and the atomizing nozzle 3228 on the atomizing nozzle connecting block 3227 also shrinks accordingly, so that the distance between the multiple atomizing nozzles 3228 is shortened, making the water mist of the water wall more concentrated.

[0042] like Figure 7 As shown, the base 1 includes a base body 11, and base slide grooves 12 are respectively opened on the front and rear sides of the top of the base body 11, and the left and right sides of the inner walls of the two base slide grooves 12 are respectively slidably connected to the outer walls of the two sets of telescopic baffle sliders 328, and the two lifting mechanisms 2 each include a screw motor connecting block 21, and the bottoms of the two screw motor connecting blocks 21 are respectively fixedly connected to the left and right sides of the top of the base body 11, and the opposite surfaces of the two screw motor connecting blocks 21 are fixedly connected to the screw motors 22, and the output ends of the two screw motors 22 are fixedly connected to the screws 23, and the tops of the two screws 23 are rotatably connected to the top plates 24, and the bottoms of one side of the two top plates 24 are A sliding column outer frame connecting plate 25 is fixedly connected, and sliding column outer frames 26 are fixedly connected to the front and rear sides of the opposite surfaces of the two sliding column outer frame connecting plates 25. The opposite surfaces of the two groups of sliding column outer frames 26 are hollowed out, and the bottoms of the two groups of sliding column outer frames 26 are fixedly connected to the top of the base body 11. The inner walls of the two groups of sliding column outer frames 26 are slidably connected with sliding columns 27. The opposite surfaces of the two groups of sliding columns 27 are fixedly connected with C-shaped transmission plates 28 and extend to the outer walls of the sliding column outer frames 26. The inner walls of the middle parts of the two groups of C-shaped transmission plates 28 are respectively threadedly connected to the outer walls of the two screw rods 23, and the tops of the two groups of sliding columns 27 are respectively fixedly connected to the left and right sides of the bottom of the dust suppression mechanism housing 31;

[0043] When the working environment of the coal mining is changed and the height of the dust suppression device needs to be adjusted, the staff can control the rotation direction of the two screw motors 22 to rotate the two screws 23. Since the inner walls of the middle parts of the two groups of C-shaped transmission plates 28 are respectively threadedly connected to the outer walls of the two screws 23, as the screws 23 rotate, the two groups of C-shaped transmission plates 28 will move up and down along the axis direction of the two screws 23 respectively. Since the tops of the two groups of C-shaped transmission plates 28 are respectively fixedly connected to the two groups of sliding columns 27, the two groups of sliding columns 27 will also move up and down synchronously under the guidance of the two groups of sliding column outer frames 26.

[0044] Since the tops of the two groups of sliding columns 27 are respectively fixedly connected to the left and right sides of the bottom of the dust suppression mechanism housing 31, the dust suppression mechanism housing 31 will also move up and down synchronously with the up and down movement of the two groups of sliding columns 27, thereby realizing the overall height adjustment of the dust suppression device 3. During the height adjustment process, the telescopic baffle 327 will be telescoped accordingly.

[0045] In addition, the present invention also relates to a dust suppression device and method for coal mine excavation, comprising the following steps:

[0046] Step 1: Before starting the coal mining operation, first adjust the overall height of the dust suppression device 3 by controlling the rotation direction and speed of the two screw motors 22 according to the specific conditions of the working environment to ensure that the atomizing nozzle 3228 of the dust suppression mechanism 322 can cover the working area and form an effective dust barrier.

[0047] Step 2: After the height of the dust suppression device 3 is adjusted, start the motor 316 to drive the turntable 317 and the track 318 to rotate, driving the two front moving rods 325 and the telescopic baffle connecting rods 326 and telescopic baffles 327 connected thereto to move relative to each other along the slide groove 314, so that the two telescopic baffles 327 are tightly attached together, and at the same time, the dust suppression mechanism 322 slides along the dust suppression rod body 321 and unfolds.

[0048] Step 3: After the dust suppression mechanism 322 is deployed, start the water supply device 4 to provide a stable water source for multiple water pipes 3229 through the water supply device body 43, ensuring that the atomizing nozzle 3228 can continuously spray water mist to form a solid dust barrier and effectively prevent the spread of dust.

[0049] Step 4: When the staff needs to pass through the dust suppression device 3, reverse the motor 316 to drive the turntable 317 and the crawler track 318 to rotate in opposite directions, so that the two telescopic baffles 327 are gradually separated, leaving space for the staff to pass. At the same time, the dust suppression mechanism 322 also slides along the dust suppression rod body 321 driven by the motor 316 and retracts to ensure the safe passage of the staff.

[0050] Working principle of the present invention: when dust suppression is performed, the dust suppression device 3 is started, the motor 316 drives the turntable 317 to start rotating, and then drives the crawler 318 to rotate under the cooperation of the third turntable 3111, the second turntable 319 and the fourth turntable 3113. With the movement of the crawler 318, the sliding connection between the outer wall of the front crawler 318 and the inner wall of the left front moving rod 325 and the fixed connection between the inner wall of the right front moving rod 325 and the front outer wall of the crawler 318 and the inner wall of the rear moving rod 324 fixedly connected to the top of the left sliding rod 323 are fixedly connected to the rear outer wall of the crawler 318, so that the two front moving rods 325 and the telescopic baffle connecting rod 3 connected thereto are fixedly connected to the rear outer wall of the crawler 318. 26 and the telescopic baffle 327 move relative to each other along the slide groove 314 so that the two telescopic baffles 327 are tightly attached together, and at the same time, the dust suppression mechanism 322 is driven to slide along the dust suppression rod body 321 and unfold. When unfolding, a certain angle is formed between the sliding shaft 3221 and the second sliding shaft 3225 of the dust suppression mechanism 322 through the hinged action of multiple third rotating rods 3226, the rotating rod 3222 and the second rotating rod 3224, thereby forming an unfolded dust suppression surface. As the dust suppression mechanism 322 is unfolded, the atomizing nozzle 3228 on the atomizing nozzle connecting block 3227 is also unfolded according to the unfolded dust suppression surface, and through the water passing device 4 The water supply device body 43 provides a stable water source for the multiple water pipes 3229, ensuring that the atomizing nozzle 3228 can continuously spray water mist. The setting of the water pipe limit block 42 ensures the stability of the water pipe 3229 during movement, so that it can be discharged in an orderly and neat manner. The unfolded dust suppression surface forms a solid dust barrier through the atomizing nozzle 3228, effectively preventing the spread of dust. When the staff needs to pass through, the motor 316 is reversed to drive the turntable 317 and the crawler 318 to rotate in the opposite direction. With the reverse movement of the crawler 318, the two front moving rods 325 and the telescopic baffle connecting rod 326 and the telescopic baffle 327 connected thereto are The two telescopic baffles 327 are relatively moved along the slide groove 314, so that the two telescopic baffles 327 are gradually separated to leave space for the staff to pass. At the same time, the dust suppression mechanism 322 is also driven by the motor 316 to slide along the dust suppression rod body 321 and shrink. During the shrinking process, the angle between the sliding shaft 3221 and the second sliding shaft 3225 of the dust suppression mechanism 322 is gradually reduced through the hinged action of the third rotating rods 3226, the rotating rod 3222 and the second rotating rod 3224, and the atomizing nozzle 3228 on the atomizing nozzle connecting block 3227 is also shrunk accordingly, so that the distance between the multiple atomizing nozzles 3228 is close, so that the water mist of the water wall is more concentrated.

[0051] When the working environment of the coal mine excavation changes and the height of the dust suppression device needs to be adjusted, the staff can control the rotation direction of the two screw motors 22 to rotate the two screw rods 23. Since the inner walls of the middle parts of the two groups of C-shaped transmission plates 28 are respectively threadedly connected to the outer walls of the two screw rods 23, as the screw rods 23 rotate, the two groups of C-shaped transmission plates 28 will move up and down along the axial direction of the two screw rods 23 respectively. Since the tops of the two groups of C-shaped transmission plates 28 are respectively fixedly connected to the two groups of sliding columns 27, the two groups of sliding columns 27 will also move up and down synchronously under the guidance of the two groups of sliding column outer frames 26. Since the tops of the two groups of sliding columns 27 are respectively fixedly connected to the left and right sides of the bottom of the dust suppression mechanism housing 31, the dust suppression mechanism housing 31 will also move up and down synchronously as the two groups of sliding columns 27 move up and down, thereby realizing the adjustment of the overall height of the dust suppression device 3. During the height adjustment process, the telescopic baffle 327 is retracted accordingly.

[0052] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0053] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dust suppression device for coal mining, comprising a base (1), characterized in that: The left and right sides of the top of the base (1) are respectively fixedly connected with lifting mechanisms (2), the tops of the two lifting mechanisms (2) are fixedly connected with dust suppression devices (3), and the rear sides of the dust suppression devices (3) are fixedly connected with water passing devices (4); The dust suppression device (3) comprises a dust suppression mechanism housing (31), and a dust suppression rod (32) is provided on the inner wall of the dust suppression mechanism housing (31); The dust suppression rod (32) comprises a dust suppression rod body (321), the left and right ends of the dust suppression rod body (321) are respectively fixedly connected to the left and right sides of the inner wall of the outer shell body (311), the left and right sides of the outer wall of the dust suppression rod body (321) are respectively slidably connected to dust suppression mechanisms (322), the tops of the opposite surfaces of the two dust suppression mechanisms (322) are fixedly connected to sliding rods (323), the tops of the two sliding rods (323) are extended to the top of the outer shell body (311) through sliding grooves (314), and the front sides are fixedly connected to the front moving rods (323). 325), the inner wall of the front side of the left front moving rod (325) is slidably connected to the front outer wall of the crawler (318), the inner wall of the front side of the right front moving rod (325) is fixedly connected to the front outer wall of the crawler (318), the front sides of the two front moving rods (325) are fixedly connected to a telescopic baffle connecting rod (326), the bottoms of the two telescopic baffle connecting rods (326) are fixedly connected to a telescopic baffle (327), and the front and rear sides of the bottoms of the two telescopic baffles (327) are fixedly connected to a telescopic baffle sliding block (328); The two dust suppression mechanisms (322) each comprise a plurality of groups of sliding shafts (3221), wherein the bottom front and rear sides of one group of the sliding shafts (3221) are rotatably connected to rotating rods (3222), the bottoms of the opposite surfaces of the two rotating rods (3222) are rotatably connected to rotating rod hinge blocks (3223), the front and rear sides of the left side of the inner wall of the rotating rod hinge block (3223) are rotatably connected to second rotating rods (3224), the tops of the opposite surfaces of the two second rotating rods (3224) are rotatably connected to second sliding shafts (3225), the structure of the second sliding shafts (3225) is the same as that of the sliding shafts (3221), the tops of the opposite surfaces of the two second rotating rods (3224) are rotatably connected to third rotating rods (3226), and the plurality of groups of the dust suppression mechanisms (322) are hinged to another group via the two third rotating rods (3226); The bottoms of the plurality of rotating rod hinge blocks (3223) are all fixedly connected to atomizing nozzle connection blocks (3227), the bottoms of the plurality of atomizing nozzle connection blocks (3227) are all fixedly connected to atomizing nozzles (3228), and the rear sides of the plurality of atomizing nozzle connection blocks (3227) are all fixedly connected to water pipes (3229).

2. A dust suppression device for coal mining according to claim 1, characterized in that: The dust suppression mechanism housing (31) comprises a housing body (311); a connecting plate (312) is fixedly connected to the bottom of the left side of the housing body (311); a turntable placement plate (313) is fixedly connected to the left side of the connecting plate (312); a motor placement bin (315) is fixedly connected to the left side of the housing body (311); a motor (316) is fixedly connected to the bottom of the inner wall of the motor placement bin (315); a turntable (317) is fixedly connected to the output end of the motor (316); the right side of the turntable (317) is rotatably connected to the left side of the turntable placement plate (313); and a crawler track (318) is sleeved on the outer wall of the turntable (317).

3. A dust suppression device for coal mining according to claim 2, characterized in that: A slide groove (314) is provided at the top of the shell body (311); a third turntable connection frame (3110) is fixedly connected to the left side of the front side of the shell body (311); the inner wall of the third turntable connection frame (3110) is rotatably connected to the third turntable (3111); the top of the outer wall of the third turntable (3111) is rotatably connected to the side of the outer wall of the front side of the crawler (318) away from the turntable (317); the rear side of the shell body (311) is rotatably connected to the third turntable (3111). A second turntable (319), the top of the outer wall of the second turntable (319) is rotatably connected to the outer wall of the rear side of the crawler (318) away from the turntable (317), the right side of the shell body (311) is fixedly connected with a fourth turntable connecting block (3112), the top of the fourth turntable connecting block (3112) is rotatably connected with a fourth turntable (3113), and the outer wall of the fourth turntable (3113) is sleeved on the inner wall of the crawler (318) away from the turntable (317).

4. A dust suppression device for coal mining according to claim 3, characterized in that: The top of the left sliding rod (323) is fixedly connected to a rear moving rod (324), and the rear inner wall of the rear moving rod (324) is fixedly connected to the rear outer wall of the crawler track (318).

5. A dust suppression device for coal mining according to claim 1, characterized in that: The water-passing device (4) comprises a water-passing device bottom plate (41), the front side of the water-passing device bottom plate (41) being fixedly connected to the rear side of the shell body (311), the top of the water-passing device bottom plate (41) being fixedly connected to the water-passing device body (43), the top left and right sides of the water-passing device body (43) being respectively fixedly connected to water-passing device water pipe structures (44), the bottom left and right sides of the water-passing device bottom plate (41) being fixedly connected to a plurality of groups of water pipe stop blocks (42), the inner walls of the plurality of groups of water pipe stop blocks (42) being slidably connected to the outer walls of a plurality of water pipes (3229), and the rear side of the water-passing device body (43) being fixedly connected to one end of the plurality of water pipes (3229) away from the atomizing nozzle connection block (3227).

6. A dust suppression device for coal mining according to claim 1, characterized in that: The base (1) comprises a base body (11), and base slide grooves (12) are respectively provided on the front and rear sides of the top of the base body (11), and the left and right sides of the inner walls of the two base slide grooves (12) are respectively slidably connected to the outer walls of the two sets of telescopic baffle sliding blocks (328); The two lifting mechanisms (2) each include a screw motor connection block (21), the bottoms of the two screw motor connection blocks (21) are respectively fixedly connected to the left and right sides of the top of the base body (11), the opposite surfaces of the two screw motor connection blocks (21) are fixedly connected to the screw motor (22), the output ends of the two screw motors (22) are fixedly connected to the screws (23), the tops of the two screws (23) are rotatably connected to the top plate (24), the bottoms of one side of the two top plates (24) are fixedly connected to the sliding column outer frame connection plates (25), and the front and rear sides of the opposite surfaces of the two sliding column outer frame connection plates (25) are fixedly connected A slide column outer frame (26) is connected, and the opposing surfaces of the two groups of slide column outer frames (26) are both hollow-out designs. The bottoms of the two groups of slide column outer frames (26) are both fixedly connected to the top of the base body (11). The inner walls of the two groups of slide column outer frames (26) are both slidably connected to slide columns (27). The opposing surfaces of the two groups of slide columns (27) are both fixedly connected to C-shaped transmission plates (28) and extend to the outer walls of the slide column outer frames (26). The inner walls of the middle parts of the two groups of C-shaped transmission plates (28) are respectively threadedly connected to the outer walls of the two screw rods (23). The tops of the two groups of slide columns (27) are respectively fixedly connected to the left and right sides of the bottom of the dust suppression mechanism housing (31).

7. A method for using a dust suppression device for coal mining according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Before the coal mining operation begins, firstly, according to the specific conditions of the working environment, by controlling the rotation direction and speed of the two screw motors (22), the overall height of the dust suppression device (3) is adjusted to ensure that the atomizing nozzle (3228) of the dust suppression mechanism (322) can cover the working area, thereby forming an effective dust barrier; Step 2: After the height of the dust suppression device (3) is adjusted, the motor (316) is started to drive the turntable (317) and the crawler belt (318) to rotate, thereby driving the two front moving rods (325) and the telescopic baffle connecting rods (326) and the telescopic baffles (327) connected thereto to move relative to each other along the slide groove (314), so that the two telescopic baffles (327) are closely attached together, and at the same time, the dust suppression mechanism (322) slides along the dust suppression rod body (321) and is unfolded; Step 3: After the dust suppression mechanism (322) is deployed, the water supply device (4) is started to provide a stable water source to the multiple water pipes (3229) through the water supply device body (43), so as to ensure that the atomizing nozzle (3228) can continuously spray water mist, thereby forming a solid dust-proof barrier and effectively preventing the spread of dust; Step 4: When a worker needs to pass through the dust suppression device (3), the motor (316) is reversed to drive the turntable (317) and the crawler belt (318) to rotate in opposite directions, so that the two telescopic baffles (327) are gradually separated to leave space for the worker to pass. At the same time, the dust suppression mechanism (322) is also driven by the motor (316) to slide along the dust suppression rod body (321) and retract to ensure the safe passage of the worker.

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