Coal mining dust fall device based on environmental protection engineering

Abstract

The invention discloses a coal mining dust fall device based on environmental protection engineering, and relates to the technical field of environmental protection dust fall equipment, the coal mining dust fall device comprises a fog gun barrel, and further comprises a movable opening assembly and a spray head assembly; the movable opening assembly comprises a plurality of movable plates connected to an opening of the fog gun barrel through hinges, a rubber diaphragm is fixedly connected between every two adjacent movable plates and the fog gun barrel, a limiting sliding groove is formed in each movable plate, and a sliding block is slidably installed in each limiting sliding groove; dynamic adaptation of water flow can be achieved, specifically, when the angle of the movable plate changes, the arc head rod is extruded to push the abutting ring to move, and the sector plate and the macromolecule polymer film are opened and closed in a self-adaptive mode under the action of the reset spring. When the opening is expanded, the high-molecular polymer film is unfolded to the maximum opening degree, and the water yield per unit time is increased; when the opening is shrunk, the triangular convex ribs are matched with the sinking grooves to limit the opening degree of the high-molecular polymer film, the water amount is reduced, and the atomization particle size is maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental protection dust reduction equipment, and in particular to a coal mining dust reduction device based on environmental protection engineering. Background Art

[0002] Existing fog cannon devices, such as the Chinese patent with announcement number CN221385718U, disclose a fog cannon dust suppression mechanism that is easy to transfer, including a fog cannon dust suppressor and an auxiliary mechanism. The fog cannon dust suppressor includes a mobile storage box, a water tank is placed inside the mobile storage box, the top surface of the mobile storage box is provided with a fog cannon dust suppressor body, the fog cannon dust suppressor body is connected to the water tank pipe, and the back of the mobile storage box is provided with a pair of plug-in plates, the top surfaces of the plug-in plates are provided with through holes; the spray range is mainly changed by adjusting the elevation angle of the equipment, and the size of the fog cannon opening and the angle of the nozzle are mostly fixed designs, which has the following defects: Existing fog cannon devices only rely on elevation adjustment and are unable to synchronously change the opening area and nozzle angle, resulting in difficulty in balancing range and coverage. For example, increasing the elevation angle can expand the coverage area, but the range is significantly shortened, making it difficult to meet the needs of long-distance dust suppression. At the same time, fixed nozzles are prone to produce large-particle water droplets at high water volumes, resulting in poor dust reduction effects. Although the atomization effect is good at low water volumes, the coverage area is insufficient. Existing technologies lack an adaptive flow regulation mechanism, making it difficult to balance atomization particle size and water volume.

[0003] Finally, when traditional equipment is within the adjustment range, the fan and water pump power is fixed, resulting in energy waste when performing large-scale dust reduction at close range and insufficient power when spraying at long distances.

[0004] In response to the above problems, the present invention proposes a dust reduction device based on the linkage of a movable opening assembly and a nozzle assembly, which breaks through the limitations of the existing technology and realizes efficient, flexible and energy-saving coal mining dust reduction operations. Summary of the Invention

[0005] The purpose of the present invention is to provide a coal mining dust reduction device based on environmental protection engineering to solve the problems raised in the above background technology.

[0006] The technical solution of the present invention is: a coal mining dust reduction device based on environmental protection engineering, comprising a fog cannon barrel, a movable opening assembly and a nozzle assembly; The movable opening assembly includes a plurality of movable plates connected to the opening of the mist cannon barrel by hinges, a rubber diaphragm is fixedly connected between two adjacent movable plates and the mist cannon barrel, a limiting slide groove is provided on each of the movable plates, and a slider is slidably installed in the limiting slide groove, an electric telescopic rod is fixedly installed on the outer peripheral wall of the mist cannon barrel, and a driving mechanism is provided between the electric telescopic rod and the plurality of sliders; The nozzle assembly includes a mounting port opened at the end of the movable plate, and an atomizing nozzle body is rotatably installed in the mounting port through a movable shaft, the atomizing nozzle body and the slider are provided with a push-pull mechanism, each of the atomizing nozzle bodies is fixedly installed with a fixing ring and a movable sleeve is provided with a pressure ring, a return spring is fixedly connected between the pressure ring and the fixed ring, an arc rod is fixedly connected on both sides of the outer peripheral wall of the pressure ring, the arc surface end of the arc rod is in conflict with the movable plate, the end of the atomizing nozzle body is fixedly connected with a polymer film, and a plurality of evenly distributed fan-shaped plates are fixedly installed on the outer surface of the polymer film, one end of the plurality of fan-shaped plates is connected to the atomizing nozzle body by a hinge, a triangular rib is fixed on the outer wall of each fan plate, and a sink groove that slides with the triangular rib is provided on the inner wall of the pressure ring.

[0007] Preferably, a main pipe is fixedly installed on one end of the outer peripheral wall of the fog cannon barrel, and the main pipe has an annular structure. The bottom of the main pipe is fixedly connected to a water supply pipe, and the water supply pipe is connected to an external water supply system through a hose.

[0008] Preferably, a return tube is fixedly installed on each movable plate, and a rubber branch tube 1 is fixedly connected between one end of the return tube and the main tube, and a rubber branch tube 2 is fixedly connected between the other end of the return tube and the atomizing nozzle body.

[0009] Preferably, a high-speed fan is fixedly installed inside the mist cannon barrel.

[0010] Preferably, a bracket box is fixedly installed at a position of the fog cannon barrel close to the electric telescopic rod, and a sliding rheostat is fixedly installed inside the bracket box. The end of the sliding rheostat away from the movable opening assembly is electrically connected to the high-speed fan and the water pump in the external water supply system.

[0011] Preferably, the driving mechanism includes a ring rod arranged on the outside of multiple movable plates, each of the sliders is fixedly mounted with a perforated extension block, the ring rod movably passes through the multiple perforated extension blocks, multiple pairs of connecting rods are fixed on the outside of the ring rod, the ends of the multiple pairs of connecting rods are commonly fixedly connected to a frame, and one side of the frame is fixedly connected to the extension end of the electric telescopic rod.

[0012] Preferably, the push-pull mechanism includes a plurality of push-pull rods fixedly mounted on one side of the extension block with a hole, and the ends of the push-pull rods are provided with claw-shaped ends of an integral structure, and the claw-shaped ends are rotatably mounted with roller rods. An L-shaped extension rod is fixedly mounted on one side of each of the atomizing nozzle bodies, and the L-shaped extension rods are provided with long circular grooves that movably cooperate with the roller rods.

[0013] Preferably, a horizontally arranged linkage rod is fixedly mounted on the top of the frame, and the linkage rod movably passes through the bracket box.

[0014] Preferably, a conductive clip is fixedly mounted on the end of the linkage rod, and the conductive clip is in contact with the sliding rheostat.

[0015] Preferably, a pair of guide blocks are fixed on the outer peripheral wall of the fog cannon barrel, and a pair of guide rods are fixed on one side of the frame, and the guide rods are slidably connected to the guide blocks in the horizontal direction.

[0016] The present invention provides a coal mining dust suppression device for environmental protection engineering through improvements, which has the following improvements and advantages compared with the prior art: First, the present invention uses an electric telescopic rod to drive the ring rod and slider to synchronously adjust the opening and closing angles of the movable plates and the elevation angle of the atomizing nozzle. When the opening of the movable opening assembly is reduced, the inclination angle of each movable plate increases, thereby enhancing the narrow tube effect and increasing the spray coverage distance. At the same time, the push-pull mechanism is linked to the L-shaped extension rod through the roller rod to reduce the elevation angle of the atomizing nozzle, so that the water mist spray direction is consistent with the high-speed wind flow, further significantly improving the spray range. Second, the present invention enables dynamic adaptation of water flow. Specifically, when the angle of the movable plate changes, the arc rod is squeezed, pushing the pressure ring to move. The return spring acts to adaptively open and close the sector plate and the polymer membrane. When the opening widens, the polymer membrane expands to its maximum opening, increasing the amount of water delivered per unit time. When the opening narrows, the triangular ribs and the grooves cooperate to restrict the opening of the polymer membrane, reducing water flow while maintaining atomized particle size. Third: In the present invention, the movement of the frame drives the conductive clip at the end of the linkage rod to slide on the sliding rheostat. When the opening is reduced (range mode), the conductive clip moves away from the center of the sliding rheostat, the resistance decreases, and the high-speed fan power is triggered to increase to a value close to the rated value. At the same time, the water pump flow increases synchronously to ensure the atomization intensity at a long range; when the opening is expanded (covering mode), the resistance increases, and the power of the high-speed fan and water pump is automatically reduced, taking into account both energy saving and large-area dust reduction needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the overall first-view three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall second-viewing perspective three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the partial cross-section structure of the fog cannon barrel of the present invention; Figure 4For the present invention Figure 3 A in the middle is an enlarged structural diagram; Figure 5 It is a schematic diagram of the three-dimensional structure of the movable opening assembly of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the framework of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the ring rod and the movable plate of the present invention; Figure 8 For the present invention Figure 7 The enlarged structural diagram at B in the middle; Figure 9 It is a schematic diagram of the three-dimensional structure of the nozzle assembly of the present invention; Figure 10 For the present invention Figure 9 Enlarged structural diagram at point C in the middle.

[0019] Reference numerals: 1. Mist cannon barrel; 2. Main tube; 3. Rubber branch pipe 1; 4. Reciprocating tube; 5. Electric telescopic rod; 6. Frame; 7. Linkage rod; 8. Movable plate; 9. Rubber diaphragm; 10. Rubber branch pipe 2; 11. Mounting port; 12. Atomizing nozzle body; 13. L-shaped extension rod; 14. Long circular groove; 15. Retaining ring; 16. Return spring; 17. Pressure ring; 18. Arc head rod; 19. Triangular rib; 20. Sector plate; 21. Polymer membrane; 22. Limiting slide; 23. Slider; 24. Extension block with hole; 25. Push-pull rod; 26. Claw end; 27. Roller rod; 28. Ring rod; 29. ​​Connecting rod; 30. High-speed fan; 31. Guide block; 32. Guide rod; 33. Bracket box; 34. Sliding rheostat; 35. Conductive clamp; 36. Water supply pipe. DETAILED DESCRIPTION

[0020] The present invention is described in detail below, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] The present invention provides a coal mining dust reduction device based on environmental protection engineering through improvement. The technical solution of the present invention is: like Figures 1 to 10 As shown, an embodiment of the present invention provides a coal mining dust reduction device based on environmental protection engineering, including a fog cannon barrel 1, a movable opening assembly and a nozzle assembly; The movable opening assembly includes multiple movable plates 8 connected to the opening of the mist cannon barrel 1 by hinges, and a rubber diaphragm 9 is fixedly connected between two adjacent movable plates 8 and the mist cannon barrel 1. A limiting slide groove 22 is provided on each movable plate 8, and a slider 23 is slidably installed in the limiting slide groove 22. An electric telescopic rod 5 is fixedly installed on the outer peripheral wall of the mist cannon barrel 1, and a driving mechanism is provided between the electric telescopic rod 5 and the multiple sliders 23; the movable opening assembly is set to adjust the spray intensity of water mist by changing the inclination angle of the multiple movable plates 8. Specifically, the greater the inclination angle of the multiple movable plates 8, the greater the spray intensity of the water mist; when the inclination angle of the movable plate 8 is smaller, the spray intensity of the water mist is smaller.

[0022] The nozzle assembly includes a mounting port 11 opened at the end of the movable plate 8, and an atomizing nozzle body 12 is installed in the mounting port 11 through a movable shaft. The atomizing nozzle body 12 and the slider 23 are provided with a push-pull mechanism. A fixing ring 15 and a movable sleeve are fixedly mounted on each atomizing nozzle body 12. A return spring 16 is fixedly connected between the pressure ring 17 and the fixed ring 15. Both sides of the outer peripheral wall of the pressure ring 17 are fixedly connected to an arc rod 18. The arc surface end of the arc rod 18 conflicts with the movable plate 8. The end of the atomizing nozzle body 12 is fixedly connected to a polymer film 21, and the outer surface of the polymer film 21 is fixedly mounted with a plurality of evenly distributed fan blades. shaped plate 20, one end of the plurality of sector plates 20 is connected to the atomizing nozzle body 12 by a hinge, and a triangular convex rib 19 is fixed to the outer wall of each sector plate 20, and the inner wall of the pressure ring 17 is provided with a sink groove that slides with the triangular convex rib 19; through the above structure, the nozzle assembly can automatically adjust the angle according to the action of the movable opening assembly. Specifically, when the inclination angle of the plurality of movable plates 8 is larger, under the action of the set push-pull mechanism, the angle between the plurality of atomizing nozzle bodies 12 and the movable plate 8 is smaller, so that the spraying direction of the atomizing nozzle body 12 is consistent with the air outlet direction of the mist cannon barrel 1, thereby effectively increasing the spraying distance. On the other hand, Figure 10 As shown, when the elevation angle of the atomizing nozzle body 12 decreases, the contact position between the arc rod 18 and the movable plate 8 changes. At this time, under the action of the return spring 16, the pressing ring 17 moves toward the movable plate 8, thereby making the opening of the polymer membrane 21 as open as possible to increase the water output and improve the atomization dust reduction effect; On the contrary, when the inclination angle of the multiple movable plates 8 is smaller, under the action of the set push-pull mechanism, the angle between the multiple atomizing nozzle bodies 12 and the movable plates 8 is larger, and then the spraying direction of the atomizing nozzle body 12 tends to be perpendicular to the air outlet direction of the fog cannon barrel 1, so as to reduce the spraying distance; when the elevation angle of the atomizing nozzle body 12 increases, the degree of interference between the arc head rod 18 and the movable plate 8 increases. At this time, the pressure ring 17 moves toward the direction of the triangular rib 19, thereby shrinking the openings of the fan-shaped plate 20 and the polymer membrane 21, so as to maintain the atomization effect while reducing the water output.

[0023] As a further solution of the present invention, a main pipe 2 is fixedly installed on one end of the outer wall of the fog cannon barrel 1, and the main pipe 2 has an annular structure. The bottom of the main pipe 2 is fixedly connected to a water supply pipe 36, and the water supply pipe 36 is connected to an external water supply system through a hose; using the above structure, the external water supply system can pass water into the main pipe 2 through the water supply pipe 36.

[0024] Furthermore, a return tube 4 is fixedly installed on each movable plate 8, and a rubber branch tube 3 is fixedly connected between one end of the return tube 4 and the mother tube 2, and a rubber branch tube 2 10 is fixedly connected between the other end of the return tube 4 and the atomizing nozzle main body 12; through this arrangement, the water can pass through the rubber branch tube 1 3, the return tube 4 and the rubber branch tube 2 10, and finally enter the atomizing nozzle main body 12.

[0025] Furthermore, a high-speed fan 30 is fixedly installed inside the mist cannon barrel 1; the high-speed fan 30 is used to form a high-speed airflow in the mist cannon barrel 1 to complete the spray dust reduction operation.

[0026] As a further solution of the present invention, a bracket box 33 is fixedly installed at a position of the fog cannon barrel 1 near the electric telescopic rod 5, and a sliding rheostat 34 is fixedly installed inside the bracket box 33. The end of the sliding rheostat 34 away from the movable opening component is electrically connected to the high-speed fan 30 and the water pump in the external water supply system; through the above structure, the power of the high-speed fan 30 and the water pump can be adjusted by utilizing the set sliding rheostat 34, so that the water mist spray can be adjusted more effectively compared with the existing fog cannon adjustment method.

[0027] As a further embodiment of the present invention, Figure 1-5 As shown, the driving mechanism includes a ring rod 28 arranged on the outside of multiple movable plates 8, and a perforated extension block 24 is fixedly mounted on each slider 23. The ring rod 28 movably passes through the multiple perforated extension blocks 24. Multiple pairs of connecting rods 29 are fixed to the outside of the ring rod 28. The ends of the multiple pairs of connecting rods 29 are commonly fixedly connected to the frame 6, and one side of the frame 6 is fixedly connected to the extended end of the electric telescopic rod 5.

[0028] Furthermore, the push-pull mechanism includes a plurality of push-pull rods 25 fixedly mounted on one side of the perforated extension block 24, and the ends of the push-pull rods 25 are provided with claw-shaped ends 26 of an integral structure, and the claw-shaped ends 26 are rotatably mounted with roller rods 27. An L-shaped extension rod 13 is fixedly mounted on one side of each atomizing nozzle body 12, and an elongated circular groove 14 is provided on the L-shaped extension rod 13 for movably cooperating with the roller rod 27.

[0029] With the above structure, when the electric telescopic rod 5 is extended, the frame 6 and the connecting rod 29 can push the ring rod 28 to move, thereby pushing the multiple sliders 23 to move toward the atomizing nozzle body 12, and making the multiple movable plates 8 tend to be horizontal. At the same time, under the cooperative action of the push-pull rod 25, the roller rod 27 and the L-shaped extension rod 13, the elevation angle of the atomizing nozzle body 12 gradually increases; On the contrary, when the electric telescopic rod 5 retracts, the ring rod 28 can be pulled toward the electric telescopic rod 5, and the opening formed by the multiple movable plates 8 gradually retracts. The pulling action of the push-pull rod 25 can make the elevation angle of the atomizing nozzle body 12 tend to be horizontal.

[0030] As a further solution of the present invention, a horizontally arranged linkage rod 7 is fixedly mounted on the top of the frame 6 , and the linkage rod 7 movably passes through the bracket box 33 .

[0031] Furthermore, a conductive clip 35 is fixedly installed at the end of the linkage rod 7, and the conductive clip 35 is in contact with the sliding rheostat 34; through the above structure, when the electric telescopic rod 5 retracts to reduce the atomizing nozzle, the provided conductive clip 35 can move in the direction away from the movable opening component, thereby reducing the resistance and increasing the power of the high-speed fan 30 and the water pump, effectively improving the spray range and scope of the fog cannon; conversely, when a small range of dust reduction is required, the electric telescopic rod 5 is extended to increase the atomizing nozzle. At this time, the conductive clip 35 can move in the direction close to the movable opening component to increase the resistance, thereby reducing the power of the high-speed fan 30 and the water pump in turn.

[0032] Furthermore, a pair of guide blocks 31 are fixed on the outer wall of the fog cannon barrel 1, and a pair of guide rods 32 are fixed on one side of the frame 6, and the guide rods 32 are slidably connected to the guide blocks 31 in the horizontal direction; through the cooperation between the guide rods 32 and the guide blocks 31, the stability of the movement of the frame 6 can be improved to ensure the stable operation of the driving mechanism.

[0033] The specific working method is as follows: when the atomization dust reduction range needs to be adjusted, the electric telescopic rod 5 can be activated, and its extended end pushes the frame 6 to move horizontally, and the ring rod 28 is driven to move synchronously through the connecting rod 29; when the ring rod 28 moves, the slider 23 passing through the multiple perforated extension blocks 24 slides in the limiting slide groove 22, forcing the movable plate 8 to rotate around the hinge, thereby changing the opening size of the movable opening assembly; when the opening is expanded, the multiple movable plates 8 tend to be horizontal, forming a larger spray coverage area; when the opening is reduced, the movable plates 8 tilt, concentrating the spray airflow to significantly increase the range; At the same time, when the slider 23 moves, the push-pull rod 25 drives the L-shaped extension rod 13 to rotate through the claw-shaped end 26 and the roller rod 27, so that the atomizing nozzle body 12 deflects around the movable axis; specifically, when the opening of the movable opening assembly is reduced, the elevation angle of the atomizing nozzle body 12 is reduced, so that the injection direction is consistent with the high-speed wind flow, thereby improving the range; when the opening of the movable opening assembly is increased, the elevation angle of the atomizing nozzle body 12 is increased, thereby reducing the range; and, when the angle of the movable plate 8 changes, the contact point between the arc head rod 18 and the movable plate 8 is displaced, and the reset spring 16 provided in conjunction with the provided can enable the pressure ring 17 to move, and the triangular rib 19 provided in conjunction with the provided to drive the fan plate 20 expands or contracts; when the fan-shaped plate 20 expands, the opening of the polymer membrane 21 increases, and the water output increases to meet the increased water demand caused by the increase in range; when the triangular rib 19 cooperates with the sink, the opening of the polymer membrane 21 contracts, which can reduce the water volume but maintain the atomization particle size; finally, when the frame 6 moves, the linkage rod 7 drives the conductive clip 35 to move on the sliding rheostat 34, changing the circuit resistance value; specifically, when the opening of the movable opening component is reduced, the resistance is reduced, the speed of the high-speed fan 30 is increased, the water pump flow is increased, and the range is enhanced; otherwise, the power is reduced to meet the needs of close-range dust reduction and achieve energy saving and emission reduction effects.

[0034] The above description is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A coal mining dust reduction device based on environmental protection engineering, comprising a fog cannon barrel (1), characterized in that: Also included are a movable opening assembly and a nozzle assembly; The movable opening assembly comprises a plurality of movable plates (8) connected to the opening of the mist cannon barrel (1) by hinges, a rubber diaphragm (9) is fixedly connected between two adjacent movable plates (8) and the mist cannon barrel (1), a limiting slide groove (22) is provided on each of the movable plates (8), and a slider (23) is slidably installed in the limiting slide groove (22), an electric telescopic rod (5) is fixedly installed on the outer peripheral wall of the mist cannon barrel (1), and a driving mechanism is provided between the electric telescopic rod (5) and the plurality of sliders (23); The nozzle assembly includes a mounting port (11) opened at the end of the movable plate (8), and an atomizing nozzle body (12) is rotatably mounted in the mounting port (11) via a movable shaft, and a push-pull mechanism is provided on the atomizing nozzle body (12) and the slider (23), and a fixing ring (15) is fixedly mounted on each of the atomizing nozzle bodies (12) and a pressure ring (17) is provided on the movable sleeve, a return spring (16) is fixedly connected between the pressure ring (17) and the fixed ring (15), and arc springs are fixedly connected on both sides of the outer peripheral wall of the pressure ring (17). The head rod (18) has an arc surface end that contacts the movable plate (8), and the end of the atomizing nozzle body (12) is fixedly connected with a polymer film (21), and a plurality of evenly distributed fan-shaped plates (20) are fixedly installed on the outer surface of the polymer film (21), and one end of the plurality of fan-shaped plates (20) is connected to the atomizing nozzle body (12) through a hinge, and a triangular convex rib (19) is fixed on the outer wall of each fan-shaped plate (20), and the inner wall of the pressure ring (17) is provided with a recessed groove that slides with the triangular convex rib (19).

2. The coal mining dust suppression device based on environmental protection engineering according to claim 1 is characterized by: A main pipe (2) is fixedly mounted on one end of the outer peripheral wall of the mist cannon barrel (1), and the main pipe (2) is annular in structure. A water supply pipe (36) is fixedly connected to the bottom of the main pipe (2), and the water supply pipe (36) is connected to an external water supply system through a hose.

3. The coal mining dust suppression device based on environmental protection engineering according to claim 2, characterized in that: A return tube (4) is fixedly mounted on each movable plate (8), and a rubber branch tube (3) is fixedly connected between one end of the return tube (4) and the main tube (2), and a rubber branch tube (10) is fixedly connected between the other end of the return tube (4) and the atomizing nozzle body (12).

4. The coal mining dust suppression device based on environmental protection engineering according to claim 1, characterized in that: A high-speed fan (30) is fixedly installed inside the mist cannon barrel (1).

5. The coal mining dust suppression device based on environmental protection engineering according to claim 4 is characterized in that: A bracket box (33) is fixedly installed at a position of the mist cannon barrel (1) near the electric telescopic rod (5), and a sliding rheostat (34) is fixedly installed inside the bracket box (33). The end of the sliding rheostat (34) away from the movable opening component is electrically connected to the high-speed fan (30) and the water pump in the external water supply system.

6. A coal mining dust suppression device based on environmental protection engineering according to any one of claims 1 to 5, characterized in that: The driving mechanism includes a ring rod (28) arranged on the outside of a plurality of movable plates (8), a perforated extension block (24) is fixedly mounted on each of the sliders (23), the ring rod (28) movably passes through the plurality of perforated extension blocks (24), a plurality of pairs of connecting rods (29) are fixed on the outside of the ring rod (28), the ends of the plurality of pairs of connecting rods (29) are fixedly connected to a frame (6), and one side of the frame (6) is fixedly connected to the extension end of the electric telescopic rod (5).

7. The coal mining dust suppression device based on environmental protection engineering according to claim 6, characterized in that: The push-pull mechanism comprises a plurality of push-pull rods (25) fixedly mounted on one side of a perforated extension block (24), and the ends of the push-pull rods (25) are provided with claw-shaped ends (26) of an integral structure, and the claw-shaped ends (26) are rotatably mounted with roller rods (27). An L-shaped extension rod (13) is fixedly mounted on one side of each atomizing nozzle body (12), and an elongated circular groove (14) is provided on the L-shaped extension rod (13) for movably cooperating with the roller rod (27).

8. The coal mining dust suppression device based on environmental protection engineering according to claim 6, characterized in that: A horizontally arranged linkage rod (7) is fixedly mounted on the top of the frame (6), and the linkage rod (7) movably passes through the bracket box (33).

9. The coal mining dust suppression device based on environmental protection engineering according to claim 8, characterized in that: A conductive clip (35) is fixedly mounted on the end of the linkage rod (7), and the conductive clip (35) is in contact with the sliding rheostat (34).

10. The coal mining dust suppression device based on environmental protection engineering according to claim 6, characterized in that: A pair of guide blocks (31) are fixed on the outer peripheral wall of the fog cannon barrel (1), and a pair of guide rods (32) are fixed on one side of the frame (6). The guide rods (32) are slidably connected to the guide blocks (31) in the horizontal direction.

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