Dustproof spraying device for fully mechanized coal mining face of coal mine

Abstract

The utility model relates to the technical field of coal mine fully mechanized mining, and provides a dustproof spraying device for a coal mine fully mechanized mining face, which comprises a base, the top of the base is provided with a water storage tank main body, the surface of the water storage tank main body is fixedly connected with a water inlet pipe, and the top of the base is provided with a dust collection equipment main body behind the water storage tank main body; by arranging the lifting block, a worker can dedust a mining environment through the spraying equipment main body and the dust collection equipment main body, and if the ground is uneven, the worker can manually rotate a lead screw at a lower corner, so that a transmission block on the surface of the lead screw drives the lifting block to slide downwards in a groove in the bottom of a bottom block; and when the universal wheel at the lower corner descends to level the base, rotation of the lead screw can be stopped, so that the purpose of adjusting the height of the universal wheel is achieved, it is guaranteed that the whole equipment is in a horizontal stable state, and then the spraying and dust removing effect of the equipment is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine fully-mechanized mining, in particular to a dust-proof spray device for a fully-mechanized mining working face in a coal mine. Background Art

[0002] Coal mines are areas where humans mine coal resources in coal-rich mining areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, people generally choose to dig tunnels underground to mine coal. This is an underground coal mine. When the coal seam is very close to the surface, people generally choose to directly strip off the surface soil layer to mine coal. This 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 excavating geological strata rich in coal. They usually include tunnels, wells, mining faces, etc. Coal is the main solid fuel and a type of combustible organic rock. A large amount of coal dust will be generated during coal mining. In order to protect the health and safety of construction workers, dust removal and dust reduction treatments are usually carried out on the working face during work.

[0003] After searching, the existing patent (publication number: CN 214660324 U) discloses a dust-proof spray device for a fully mechanized mining working face in a coal mine, which relates to the technical field of dust-proof spray, including a bellows and a water tank, two clamping blocks are fixedly installed on the top of the bellows, and a first fixed plate is fixedly installed on the bottom of the water tank, and two clamping grooves are provided at the bottom of the first fixed plate, and the inner diameter of the clamping groove is the same as the outer diameter of the clamping block, and the bellows is provided with a collecting groove, and two fans are fixedly installed inside the collecting groove, and the output ends of the two fans are fixedly installed with a collecting box, and a dust reduction box is fixedly installed on one side of the water tank. The beneficial effects of the utility model are as follows: by utilizing the clamping relationship between the first fixed plate and the clamping groove, the bellows and the water tank can be disassembled and used separately, reducing the limitations of use, and by utilizing the fan, smoke and dust in the air can be sucked into the interior of the collecting box, so that the coal dust in the air can be reused and recycled, thereby improving the utilization efficiency of the coal dust.

[0004] However, in the above solution, when the equipment is performing dust-proof spraying work, because the coal mining environment is relatively complex and the ground is bumpy and uneven, it will make it difficult for the spray equipment to be placed flat and stable, thus affecting the spray area and dust removal effect.

[0005] In view of this, the utility model proposes a dust-proof spray device for a fully mechanized mining working face in a coal mine. Utility Model Content

[0006] The utility model provides a dust-proof spray device for a fully-mechanized mining working face in a coal mine, which solves the problems of fully-mechanized mining in the related art.

[0007] The technical solution of the utility model is as follows: a dust-proof spray device for a fully mechanized mining working face in a coal mine, comprising a base, a water storage tank main body is provided on the top of the base, a water inlet pipe is fixedly connected to the surface of the water storage tank main body, a dust suction device main body is provided on the top of the base at the rear of the water storage tank main body, a spray device main body is provided on the top of the base at the side of the dust suction device main body, a transmission mechanism is provided on the top of the dust suction device main body, a first connecting pipe is fixedly connected to the top of the spray device main body, a nozzle is affixed to the top of the first connecting pipe, a fixing bolt is passed through the top of the nozzle, an adjusting disk is rotatably connected to the side of the nozzle, the top of the dust suction device main body is fixedly connected to the second connecting pipe at the rear of the transmission mechanism, the top of the second connecting pipe is affixed to the dust suction pipe, the top of the base is fixedly connected to the grip rod at the side of the water storage tank main body, the bottom of the base is fixedly connected to a bottom block, the back of the bottom block is rotatably connected to a screw rod, the surface of the screw rod is threadedly connected to a transmission block, the back of the transmission block is fixedly connected to a lifting block, and the bottom of the lifting block is rotatably connected to a universal wheel.

[0008] Preferably, the transmission mechanism includes an electric push rod, a rack, a gear, a limiting column, a rotating plate, a threaded rod, a slider, a transmission rod and a fixed ring. The top of the spray equipment body is fixedly connected to the electric push rod, the output end of the electric push rod is fixedly connected to the rack, the back of the rack is meshed with a gear, the bottom of the gear is fixedly connected to the limiting column, the top of the gear is fixedly connected to the rotating plate, the side of the rotating plate is rotatably connected to the threaded rod, the surface of the threaded rod is threadedly connected to the slider, the top of the slider is fixedly connected to the transmission rod, and the back of the transmission rod is fixedly connected to the fixed ring.

[0009] Preferably, the tops of the first connecting pipe, the nozzle, the second connecting pipe and the dust suction pipe are all provided with fixing grooves matching the fixing bolts, multiple groups of the fixing bolts are provided, and the connecting pipes of the nozzle and the dust suction pipe are all provided as hoses.

[0010] Preferably, mist outlet holes are provided on the side of the nozzle and the side of the adjustment disk, and the spray holes on the sides of the nozzle and the adjustment disk are consistent in size and position.

[0011] Preferably, the bottom block, screw rod, transmission block, lifting block and universal wheel are respectively provided in four groups, and the surfaces of two groups of the bottom blocks and the backs of two groups of the bottom blocks are respectively provided with vertical grooves matching the four groups of transmission blocks.

[0012] Preferably, a groove matching the lifting block is provided at the bottom of the bottom block, and the lifting block is embedded in the groove at the bottom of the bottom block and is slidably connected to the bottom block.

[0013] Preferably, two groups of the limiting columns are provided, and annular grooves matching the two groups of limiting columns are opened on the top of the dust collection device body, and the two groups of limiting columns are embedded in the annular grooves on the top of the dust collection device body.

[0014] Preferably, the connection point between the rotating plate and the gear is located at the center of the gear, and the rotating plate forms a rotating structure through the gear.

[0015] Preferably, the surface of the threaded rod is provided with two sets of threads in opposite directions, the two sets of threaded surfaces of the threaded rod are engaged with sliders, and the side surface of the rotating plate begins to have transverse grooves matching the two sets of sliders.

[0016] Preferably, two groups of transmission rods are provided, and four groups of fixing rings are provided, and the four groups of fixing rings are all provided in a semicircular ring shape.

[0017] The working principle and beneficial effects of the utility model are as follows:

[0018] 1. In the present invention, by setting a lifting block, the staff can remove dust from the mining environment through the spray equipment body and the dust collection equipment body. If the ground is uneven, the screw rod at a lower angle can be manually rotated so that the transmission block on the screw rod surface drives the lifting block to slide downward in the groove at the bottom of the bottom block. At this time, the universal wheel rotatably connected to the lifting block will drop accordingly. When the universal wheel at a lower angle drops to level the base, the screw rod can be stopped from rotating, thereby achieving the purpose of adjusting the height of the universal wheel to ensure that the entire equipment is in a horizontal and stable state, thereby ensuring the spray dust removal effect of the equipment;

[0019] 2. In the utility model, by setting up a transmission structure, the staff can clamp the nozzle and the dust suction pipe through the four sets of fixed rings of the transmission mechanism, and then start the electric push rod. Then, through the combined movement of the rack, gear, limit column, rotating plate, threaded rod, slider, transmission rod and fixed ring, the nozzle and the dust suction pipe are driven to swing, thereby achieving the purpose of expanding the spraying and dust suction area. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the universal wheel structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the lifting block structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the connecting pipe structure of the utility model;

[0025] Figure 5 This is a schematic diagram of the fixing ring structure of the utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the adjustment disk of the present utility model.

[0027] In the figure: 1. Base; 2. Water tank body; 3. Water inlet pipe; 4. Vacuum equipment body; 5. Spray equipment body; 6. Transmission mechanism; 61. Electric push rod; 62. Rack; 63. Gear; 64. Limit column; 65. Rotating plate; 66. Threaded rod; 67. Slider; 68. Transmission rod; 69. Fixed ring; 7. First connecting pipe; 8. Spray nozzle; 9. Fixing bolt; 10. Adjusting disk; 11. Second connecting pipe; 12. Vacuum pipe; 13. Grip; 14. Bottom block; 15. Screw rod; 16. Transmission block; 17. Lifting block; 18. Universal wheel. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] The preferred embodiment of the dust-proof spray device for a fully-mechanized coal mining working face provided by the utility model is as follows: Figures 1 to 6 As shown: A dust-proof spray device for a fully mechanized coal mining working face comprises a base 1, a water tank body 2 is provided on the top of the base 1, a water inlet pipe 3 is fixedly connected to the surface of the water tank body 2, a dust collection device body 4 is provided on the top of the base 1 behind the water tank body 2, a spray device body 5 is provided on the top of the base 1 to the side of the dust collection device body 4, a transmission mechanism 6 is provided on the top of the dust collection device body 4, a first connecting pipe 7 is fixedly connected to the top of the first connecting pipe 7, a nozzle 8 is attached to the top of the nozzle 8, and a fixing screw is passed through the top of the nozzle 8. The bolt 9 and the side of the nozzle 8 are rotatably connected to the adjusting disk 10. The top of the vacuum cleaner body 4 is located behind the transmission mechanism 6 and is fixedly connected to the second connecting tube 11. The top of the second connecting tube 11 is fitted with a vacuum tube 12. The top of the base 1 is located on the side of the water tank body 2 and is fixedly connected to the handle 13. The bottom of the base 1 is fixedly connected to the bottom block 14. The back of the bottom block 14 is rotatably connected to the screw rod 15. The surface of the screw rod 15 is threadedly connected to the transmission block 16. The back of the transmission block 16 is fixedly connected to the lifting block 17. The bottom of the lifting block 17 is rotatably connected to the universal wheel 18.

[0031] In this embodiment, the tops of the first connecting pipe 7, the nozzle 8, the second connecting pipe 11 and the dust suction pipe 12 are all provided with fixing grooves matching the fixing bolts 9. There are multiple groups of fixing bolts 9. The connecting pipes of the nozzle head 8 and the dust suction pipe 12 are both hoses. The bottom of the nozzle head 8 and the bottom of the dust suction pipe 12 are respectively fitted with the tops of the first connecting pipe 7 and the second connecting pipe 11, so that the fixing grooves at the bottom of the nozzle head 8 and the dust suction pipe 12 correspond to the fixing grooves at the tops of the first connecting pipe 7 and the second connecting pipe 11, and then the nozzle head 8 and the first connecting pipe 7, the dust suction pipe 12 and the second connecting pipe 11 are connected by multiple groups of fixing bolts 9.

[0032] In this embodiment, mist outlet holes are provided on the side of the nozzle 8 and the side of the adjusting disk 10, and the size and position of the spray holes on the sides of the nozzle 8 and the adjusting disk 10 are consistent. Because mist outlet holes are provided on the side of the nozzle 8 and the side of the adjusting disk 10, and the size and position of the spray holes on the sides of the nozzle 8 and the adjusting disk 10 are consistent, the staff can adjust the mist output of the nozzle 8 by rotating the adjusting disk 10, or directly close the nozzle 8 by adjusting the disk 10. When the mist outlet hole of the adjusting disk 10 and the mist outlet hole of the nozzle 8 completely overlap, the mist output is the largest at this time. When they are slowly staggered, the mist output will slowly decrease. When they are completely staggered, the nozzle 8 can be closed to stop misting.

[0033] In this embodiment, four groups of bottom blocks 14, screw rods 15, transmission blocks 16, lifting blocks 17 and universal wheels 18 are respectively provided. Vertical grooves matching the four groups of transmission blocks 16 are respectively opened on the surfaces of two groups of bottom blocks 14 and the backs of two groups of bottom blocks 14. Because the transmission blocks 16 are engaged with the screw rods 15, when the screw rods 15 rotate, they will drive the transmission blocks 16 to slide downward along the inner wall of the vertical grooves of the bottom blocks 14.

[0034] In this embodiment, a groove matching the lifting block 17 is provided at the bottom of the bottom block 14. The lifting block 17 is embedded in the groove at the bottom of the bottom block 14 and is slidably connected to the bottom block 14. Because the lifting block 17 is fixedly connected to the transmission block 16, when the transmission block 16 slides, it will drive the lifting block 17 to slide downward along the inner wall of the groove at the bottom of the bottom block 14. At this time, the universal wheel 18 rotatably connected to the lifting block 17 will drop vertically. When the universal wheel 18 drops to the point where the base 1 is leveled, the screw rod 15 can be stopped from rotating, thereby achieving the purpose of adjusting the height of the universal wheel 18.

[0035] Example 2

[0036] On the basis of Example 1, the preferred embodiment of the dust-proof spray device for a fully-mechanized coal mining working face provided by the present invention is as follows: Figures 1 to 6As shown: the transmission mechanism 6 includes an electric push rod 61, a rack 62, a gear 63, a limiting column 64, a rotating plate 65, a threaded rod 66, a slider 67, a transmission rod 68 and a fixed ring 69. The top of the spray equipment body 5 is fixedly connected to the electric push rod 61, the output end of the electric push rod 61 is fixedly connected to the rack 62, the back of the rack 62 is engaged with the gear 63, the bottom of the gear 63 is fixedly connected to the limiting column 64, the top of the gear 63 is fixedly connected to the rotating plate 65, the side of the rotating plate 65 is rotatably connected to the threaded rod 66, the surface of the threaded rod 66 is threadedly connected to the slider 67, the top of the slider 67 is fixedly connected to the transmission rod 68, and the back of the transmission rod 68 is fixedly connected to the fixing ring 69.

[0037] In this embodiment, two groups of limiting columns 64 are provided, and an annular groove matching the two groups of limiting columns 64 is opened on the top of the dust collection device body 4. The two groups of limiting columns 64 are embedded in the annular groove on the top of the dust collection device body 4. Because the two groups of limiting columns 64 are fixedly connected to the gear 63, when the gear 63 rotates, it will drive the two groups of limiting columns 64 to slide inside the annular groove on the top of the dust collection device body 4, and have a certain limiting effect on the gear 63.

[0038] In this embodiment, the connection point between the rotating plate 65 and the gear 63 is located at the center of the gear 63. The rotating plate 65 forms a rotating structure through the gear 63. Because the rotating plate 65 is fixedly connected to the gear 63, when the gear 63 rotates, the rotating plate 65 will drive the nozzle 8 and the dust suction pipe 12 to swing under the joint action of the threaded rod 66, the slider 67, the transmission rod 68 and the fixed ring 69, thereby achieving the purpose of expanding the spraying and dust suction area.

[0039] In this embodiment, the surface of the threaded rod 66 is provided with two sets of threads in opposite directions, and the two sets of threaded surfaces of the threaded rod 66 are engaged with sliders 67. The side of the rotating plate 65 begins to have transverse grooves matching the two sets of sliders 67. Because the surface of the threaded rod 66 is provided with two sets of threads in opposite directions, and the two sets of sliders 67 are respectively engaged with them, when the threaded rod 66 rotates, it will drive the two sets of sliders 67 to slide relative to each other inside the transverse grooves on the side of the rotating plate 65 and move closer to each other.

[0040] In this embodiment, there are two groups of transmission rods 68 and four groups of fixing rings 69. The four groups of fixing rings 69 are all arranged in a semicircular shape. Because the two groups of transmission rods 68 are respectively fixedly connected to the two groups of sliders 67, when the two groups of sliders 67 slide relative to each other, the two groups of transmission rods 68 will be driven to move relative to each other and approach each other. At this time, the four groups of fixing rings 69 fixedly connected to the two groups of transmission rods 68 will move relative to each other in pairs and approach each other. When the four groups of fixing rings 69 move to fully fit with the nozzle 8 and the dust suction pipe 12 respectively, the nozzle 8 and the dust suction pipe 12 can be clamped.

[0041] The working principle and usage process of the present invention are as follows: First, push the entire device into the vicinity of the mining operation. If the ground is uneven, the staff can manually rotate the screw rod 15 at the recessed corner. Because the transmission block 16 is engaged with the screw rod 15, when the screw rod 15 rotates, it will drive the transmission block 16 to slide downward along the inner wall of the vertical groove of the bottom block 14. Because the lifting block 17 is fixedly connected to the transmission block 16, when the transmission block 16 slides, it will drive the lifting block 17 to slide downward along the inner wall of the groove at the bottom of the bottom block 14. At this time, the universal wheel 18 rotatably connected to the lifting block 17 will drop vertically. When the universal wheel 18 drops to the point where the base 1 is leveled, the screw rod 15 can be stopped from rotating, thereby achieving the purpose of adjusting the height of the universal wheel 18 to ensure that the entire device is in a horizontal and stable state, thereby ensuring the spray dust removal effect of the equipment.

[0042] After the equipment is leveled, the bottom of the nozzle 8 and the bottom of the dust suction pipe 12 can be fitted with the top of the first connecting pipe 7 and the second connecting pipe 11 respectively, so that the fixing grooves at the bottom of the nozzle 8 and the dust suction pipe 12 correspond to the fixing grooves at the top of the first connecting pipe 7 and the second connecting pipe 11, and then the nozzle 8 and the first connecting pipe 7, the dust suction pipe 12 and the second connecting pipe 11 are connected by multiple sets of fixing bolts 9. After the connection is completed, the threaded rod 66 is manually controlled to rotate clockwise because the surface of the threaded rod 66 is provided with two sets of screws in opposite directions. The two sets of sliders 67 are respectively engaged with the two sets of sliders 67, so when the threaded rod 66 rotates, the two sets of sliders 67 will slide relative to each other in the transverse groove on the side of the rotating plate 65 and move closer to each other. Because the two sets of transmission rods 68 are respectively fixedly connected to the two sets of sliders 67, when the two sets of sliders 67 slide relative to each other, the two sets of transmission rods 68 will be driven to move relative to each other and move closer to each other. At this time, the four sets of fixing rings 69 respectively fixedly connected to the two sets of transmission rods 68 will move relative to each other in pairs and move closer to each other. When the four sets of fixing rings 69 move to the positions respectively aligned with the spray When the nozzle 8 and the dust suction pipe 12 are completely fitted together, the nozzle 8 and the dust suction pipe 12 can be clamped. Subsequently, the water storage tank body 2 is started to transport water to the spray device body 5. Then, the spray device body 5 and the dust suction device body 4 are started again to spray water mist through the nozzle 8. When the water mist contacts the dust, the dust will increase in weight and sink. At this time, the dust suction device body 4 is started again to suck the sunken dust through the dust suction pipe 12 to achieve the purpose of spray dust removal. Subsequently, the electric push is controlled The rod 61 drives the rack 62 to extend and retract, and the gear 63 will rotate accordingly. Because the two sets of limiting columns 64 are fixedly connected to the gear 63, when the gear 63 rotates, it will drive the two sets of limiting columns 64 to slide inside the top ring groove of the vacuum cleaner body 4, and have a certain limiting effect on the gear 63. Subsequently, the rotating plate 65 fixedly connected to the gear 63 will drive the nozzle 8 and the dust suction pipe 12 to swing through the threaded rod 66, slider 67, transmission rod 68 and fixed ring 69, thereby achieving the purpose of expanding the spray and dust suction area.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dust-proof spray device for a fully mechanized coal mining working face, comprising a base (1), characterized in that: A water tank body (2) is provided on the top of the base (1), a water inlet pipe (3) is fixedly connected to the surface of the water tank body (2), a dust collecting device body (4) is provided on the top of the base (1) behind the water tank body (2), a spray device body (5) is provided on the top of the base (1) beside the dust collecting device body (4), a transmission mechanism (6) is provided on the top of the dust collecting device body (4), a first connecting pipe (7) is fixedly connected to the top of the spray device body (5), a nozzle (8) is attached to the top of the first connecting pipe (7), a fixing bolt (9) is passed through the top of the nozzle (8), and the side of the nozzle (8) is rotatably connected to the nozzle (8). The top of the dust collecting device body (4) is located at the rear of the transmission mechanism (6) and is fixedly connected to a second connecting pipe (11). The top of the second connecting pipe (11) is attached to a dust collecting pipe (12). The top of the base (1) is located at the side of the water tank body (2) and is fixedly connected to a gripping rod (13). The bottom of the base (1) is fixedly connected to a bottom block (14). The back of the bottom block (14) is rotatably connected to a screw rod (15). The surface of the screw rod (15) is threadedly connected to a transmission block (16). The back of the transmission block (16) is fixedly connected to a lifting block (17). The bottom of the lifting block (17) is rotatably connected to a universal wheel (18).

2. A dust-proof spray device for a fully mechanized coal mining working face according to claim 1, characterized in that: The transmission mechanism (6) comprises an electric push rod (61), a rack (62), a gear (63), a limiting column (64), a rotating plate (65), a threaded rod (66), a slider (67), a transmission rod (68) and a fixed ring (69). The top of the spray equipment body (5) is fixedly connected to the electric push rod (61), the output end of the electric push rod (61) is fixedly connected to the rack (62), the back of the rack (62) is meshed with the gear (63), the bottom of the gear (63) is fixedly connected to the limiting column (64), the top of the gear (63) is fixedly connected to the rotating plate (65), the side of the rotating plate (65) is rotatably connected to the threaded rod (66), the surface of the threaded rod (66) is threadedly connected to the slider (67), the top of the slider (67) is fixedly connected to the transmission rod (68), and the back of the transmission rod (68) is fixedly connected to the fixed ring (69).

3. The dust-proof spray device for a fully mechanized coal mining working face according to claim 1, characterized in that: The tops of the first connecting pipe (7), the nozzle (8), the second connecting pipe (11) and the dust suction pipe (12) are all provided with fixing grooves matching the fixing bolts (9), and the fixing bolts (9) are provided in multiple groups. The connecting pipes of the nozzle (8) and the dust suction pipe (12) are all provided in the form of hoses.

4. The dust-proof spray device for a fully mechanized coal mining working face according to claim 1, characterized in that: The side of the nozzle (8) and the side of the regulating disk (10) are both provided with mist outlet holes, and the spray holes on the sides of the nozzle (8) and the regulating disk (10) are consistent in size and position.

5. The dust-proof spray device for a fully mechanized coal mining working face according to claim 1, characterized in that: The bottom block (14), the screw rod (15), the transmission block (16), the lifting block (17) and the universal wheel (18) are respectively provided with four groups, and the surfaces of the two groups of the bottom blocks (14) and the backs of the two groups of the bottom blocks (14) are respectively provided with vertical grooves matching the four groups of transmission blocks (16).

6. The dust-proof spray device for a fully mechanized coal mining working face according to claim 1, characterized in that: The bottom of the bottom block (14) is provided with a groove matching the lifting block (17), and the lifting block (17) is embedded in the groove at the bottom of the bottom block (14) and is slidably connected to the bottom block (14).

7. The dust-proof spray device for a fully mechanized coal mining working face according to claim 2, characterized in that: Two groups of the limiting columns (64) are provided, and an annular groove matching the two groups of limiting columns (64) is provided on the top of the dust collection device body (4), and the two groups of limiting columns (64) are embedded in the annular groove on the top of the dust collection device body (4).

8. The dust-proof spray device for a fully mechanized coal mining working face according to claim 2, characterized in that: The connection point between the rotating plate (65) and the gear (63) is located at the center of the gear (63), and the rotating plate (65) forms a rotating structure through the gear (63).

9. The dust-proof spray device for a fully mechanized coal mining working face according to claim 2, characterized in that: The surface of the threaded rod (66) is provided with two sets of threads in opposite directions, and the two sets of threaded surfaces of the threaded rod (66) are engaged with sliders (67), and the side of the rotating plate (65) begins to have a transverse groove matching the two sets of sliders (67).

10. The dust-proof spray device for a fully mechanized coal mining working face according to claim 2, characterized in that: The transmission rods (68) are provided in two groups, and the fixing rings (69) are provided in four groups. The four groups of fixing rings (69) are all provided in a semicircular ring shape.

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