Coal dust spraying and dust falling device for coal mine safety production

Abstract

The invention discloses a coal dust spraying and dust falling device for coal mine safety production, the coal dust spraying and dust falling device structurally comprises a supporting plate, moving wheels, a hand pushing frame, a dust collecting cover and a water tank, the four corners of the bottom of the supporting plate are each provided with one moving wheel, and the hand pushing frame is welded to the surface of the right end of the supporting plate. Coal dust entering the collecting box is guided by a lower guide opening to be in comprehensive contact with a filter plate, and the filter plate elastically filters the coal dust under the action that a spring guide rod exerts lifting elastic force on a connecting plate, so that the comprehensiveness of dust falling and collecting of the coal dust is improved; a water source enters the multiple flow dividing pipes and the atomization nozzles to be atomized and sprayed out to carry out dust falling work on coal dust, and the air cylinder stretches out and draws back to drive the water cannon head to ascend and descend, so that the height of the atomization nozzles in the water cannon head is adjusted, and comprehensive dust falling work is carried out on coal dust of different heights.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine safety production, and more specifically, to a coal dust spraying and dust reduction device for coal mine safety production. Background Art

[0002] A coal mine is an area where humans extract coal resources in coal-rich mining areas, generally divided into underground coal mines and surface coal mines; when the coal seam is far from the surface, generally, underground roadways are dug to extract coal, which is an underground coal mine. When carrying out coal mine safety production, a coal dust spraying and dust reduction device is required to reduce the dust generated during production, improve the visibility of the coal mine workplace, reduce the risk of work-related injuries, and prevent the generation of toxic gases by coal dust under high-temperature conditions, seriously threatening the safety of personnel. However, the existing coal dust spraying and dust reduction devices for coal mine safety production have the following deficiencies during operation: The water mist generated by spraying reduces the coal dust at high positions, while the coal dust at lower positions is difficult to be reduced by the water mist, resulting in the ineffective treatment of the coal dust below, reducing the comprehensiveness of coal dust reduction, and the coal dust after dust reduction is still on the ground of the coal mine workplace, and cleaning equipment is still needed to comprehensively collect the coal dust, reducing the convenience of centralized treatment of coal dust. Summary of the Invention

[0003] The technical solution adopted by the present invention to achieve the technical purpose is: A coal dust spraying and dust reduction device for coal mine safety production, the structure of which includes a support plate, moving wheels, a hand push frame, a dust collection hood, and a water tank. Four moving wheels are provided at the four corners of the bottom of the support plate, and the hand push frame is welded to the right end surface of the support plate. The dust collection hood is arranged at the left end of the support plate, and the water tank is installed on the upper surface of the right end of the support plate. A support arm is provided at both the front and rear ends of the dust collection hood, and the support arm stands vertically on the upper surface of the left end of the support plate. An electric push rod is also provided at the right end of the dust collection hood and is connected by a shaft. The lower end of the electric push rod is axially connected to the upper surface of the support plate. The right end of the dust collection hood is also connected to an air suction inlet pipe, and the right end of the air suction inlet pipe is connected in communication with a dust suction fan arranged on the upper surface of the support plate. A guide pipe is provided at the right end of the dust suction fan and is connected in communication with the inside of a collection box installed on the upper surface of the support plate. A connecting pipe is arranged inside the dust collection hood and is connected in communication with the air suction inlet pipe. A negative pressure chamber is also embedded inside the dust collection hood and is connected in communication with the connecting pipe. A flow guiding plate is welded inside the negative pressure chamber to guide the gas towards the connecting pipe. The negative pressure chamber is a cavity structure with a wide inlet end and a narrow outlet end, and forms a flow guiding state from left to right in cooperation with multiple flow guiding plates inside.

[0004] As a further improvement of the present invention, a grille bar and an opening / closing plate are further provided at the left end inside the dust collection hood. A torsion shaft is provided at the edge end of the opening / closing plate and is hinged to the inside of the dust collection hood. Moreover, a spring is provided between the opening / closing plate and the inner wall of the dust collection hood. There are two sets of the opening / closing plate, torsion shaft and spring, and they are symmetrically arranged up and down at the upper and lower ends on the left side inside the dust collection hood. Under the elastic action exerted by the torsion shaft and the spring, when a negative pressure is generated inside the negative pressure chamber of the dust suction fan, the opening / closing plate can rotate by itself to open the left end of the dust collection hood.

[0005] As a further improvement of the present invention, a lower guide port is provided at the upper end inside the collection box. The lower guide port has a cavity structure that is wider at the top and narrower at the bottom, and conducts the coal dust entering the collection box downward. A filter plate is installed below the lower guide port to filter the coal dust. A reflux chamber is provided below the filter plate, and the reflux chamber is connected to the inside of the water tank in a through manner. A flow pipe is also embedded at the top end inside the collection box. A spray head is provided at the lower end of the flow pipe, and the spray head is located above the lower guide port. The flow pipe is connected to a water pump provided at the upper end of the water tank in a through manner.

[0006] As a further improvement of the present invention, a clamping block is provided at both side ends of the filter plate. An adapter plate is provided inside the collection box, and a clamping groove is embedded at the inner end of the adapter plate. The clamping block is slidably clamped inside the clamping groove, and the filter plate is rotationally limited by a clamping plate at the end of the adapter plate. The filter plate is clamped and installed inside the collection box. A spring guide rod penetrates through the adapter plate, and the spring guide rod is fixedly installed inside the collection box. A lower guide piece is provided at the upper end of the adapter plate. There are two sets of the adapter plates, and they are symmetrically installed left and right. The filter plate can be horizontally clamped and fixed as a whole by the adapter plates on both sides, and the spring guide rod exerts a lifting elastic force on the adapter plate and the lower guide piece conducts downward.

[0007] As a further improvement of the present invention, a water pump and a controller are provided at the upper end of the water tank. By starting the two water pumps to run synchronously through the controller, the water source inside the water tank is transported into the water suction pipe. Moreover, a water guide hose is connected to the upper end of the water suction pipe, and a water cannon head is connected to the upper end of the water guide hose. A cylinder is provided at the bottom of the water cannon head, and the cylinder is fixedly installed at the upper end of the collection box; A collecting chamber is embedded inside the water cannon head, and the collecting chamber is connected to the water guide hose in a through manner. A plurality of shunt pipes are also connected to the collecting chamber, and an atomizing nozzle is connected to each shunt pipe. The atomizing nozzle is located at the left end opening of the water cannon head. The cylinder is installed in a vertical orientation. The water cannon head is driven to move up and down by the telescopic movement of the cylinder, so as to adjust the height of the atomizing nozzle inside the water cannon head.

[0008] As a further improvement of the present invention, a lifter is also installed inside the water tank. The lifter is composed of a telescopic hose, a weight, a hollow plate, a hollow tube, and a floating ball. The upper end of the telescopic hose is fixed to the upper end inside the water tank and is connected in through - connection with the lower end of the water pump. The bottom of the telescopic hose is fixedly installed with a weight, and the lower end of the telescopic hose penetrates through the inside of the hollow plate. Four hollow tubes are connected to the outside of the hollow plate, and a floating ball is provided at the connecting end of each of the four hollow tubes. The floating ball, the hollow tube, and the hollow plate can float at the highest position of the water level inside the water tank, supporting the telescopic hose and the weight on the water surface.

[0009] The beneficial effects of the present invention are as follows: 1. Coal dust at a relatively low position is sucked in from the dust collection hood. Under the through - connection of the air duct, the coal dust enters the inside of the dust collection hood. When the dust suction fan stops working, the opening and closing plate automatically resets and closes, preventing other external sundries from entering the negative pressure cavity and causing blockage when not working. The coal dust entering the collection box is guided by the lower guide port to fully contact the filter plate. Under the action of the spring guide rod applying lifting elastic force to the connecting plate, the filter plate elastically filters the coal dust, improving the comprehensiveness of dust reduction and collection of coal dust. 2. When the water pump pumps water, the water source inside the water tank is transported through the weight and the telescopic hose to the inside of the water suction pipe and the water guiding hose, and finally enters the converging cavity of the water cannon head. The water source enters multiple shunt pipes and atomizing nozzles and is atomized and sprayed to carry out dust reduction work on the coal dust. And the cylinder expands and contracts to drive the water cannon head to lift, thereby adjusting the height of the atomizing nozzles inside the water cannon head to carry out comprehensive dust reduction work on coal dust at different heights. Description of the Drawings

[0010] Figure 1 It is a schematic structural diagram of a coal dust spraying and dust reduction device for coal mine safety production according to the present invention.

[0011] Figure 2 It is a three - dimensional structural diagram of the dust collection hood of the present invention.

[0012] Figure 3 It is a schematic internal structure diagram of the dust collection hood of the present invention.

[0013] Figure 4 It is a schematic structural diagram of the collection box and the water tank of the present invention.

[0014] Figure 5 It is a schematic disassembly structure diagram of the filter plate of the present invention.

[0015] Figure 6 It is a three - dimensional structural diagram of the lifter of the present invention.

[0016] In the figure: support plate - 1, moving wheel - 2, hand - push frame - 3, dust - collecting hood - 4, connecting pipe - 401, negative - pressure chamber - 402, deflector - 403, grid bar - 404, opening - closing plate - 405, torsion shaft - 4051, spring - 4052, collection box - 41, lower guide port - 411, filter plate - 412, clamping block - 4121, connecting plate - 4122, clamping groove - 1221, clamping plate - 1222, spring guide rod - 1223, lower guide piece - 1224, return - flow chamber - 413, flow pipe - 414, spray head - 415, air - guide pipe - 42, dust - suction fan - 43, air - suction inlet pipe - 44, electric push rod - 45, support arm - 46, water tank - 5, controller - 51, lifter - 52, telescopic hose - 521, weight - adding head - 522, hollow plate - 523, hollow pipe - 524, floating ball - 525, water pump - 53, water - suction pipe - 54, water - guide hose - 55, water cannon head - 56, air cylinder - 57, collecting chamber - 561, shunt pipe - 562, atomizing nozzle - 563. Detailed implementation mode

[0017] The following further describes the present invention with reference to the accompanying drawings: Embodiment

[0018] As shown in the Figure 1 to Figure 6 accompanying drawings: The present invention relates to a coal dust spraying and dust reduction device for coal mine safety production, and its structure includes a support plate 1, moving wheels 2, a hand push frame 3, a dust collection hood 4 and a water tank 5. Four corners of the bottom of the support plate 1 are each provided with a moving wheel 2, and the hand push frame 3 is welded to the right end surface of the support plate 1. The dust collection hood 4 is arranged at the left end of the support plate 1, and the water tank 5 is installed on the upper surface of the right end of the support plate 1. Both the front and rear ends of the dust collection hood 4 are provided with a support arm 46, and the support arm 46 stands vertically on the upper surface of the left end of the support plate 1. An electric push rod 45 is also provided at the right end of the dust collection hood 4 and is connected by a shaft. The lower end of the electric push rod 45 is axially connected to the upper surface of the support plate 1. The right end of the dust collection hood 4 is also connected to an air suction inlet pipe 44, and the right end of the air suction inlet pipe 44 is connected in communication with a dust suction fan 43 arranged on the upper surface of the support plate 1. The right end of the dust suction fan 43 is provided with a guide pipe 42 that is connected in communication with the inside of a collection box 41 installed on the upper surface of the support plate 1. Inside the dust collection hood 4, there is a connecting pipe 401 that is connected in communication with the air suction inlet pipe 44. Inside the dust collection hood 4, there is also a negative pressure chamber 402 that is connected in communication with the connecting pipe 401. A diversion plate 403 is welded inside the negative pressure chamber 402 to divert the gas towards the direction of the connecting pipe 401. At the left end inside the dust collection hood 4, there are also grid bars 404 and an opening and closing plate 405. The edge end of the opening and closing plate 405 is provided with a torsion shaft 4051 that is hinged to the inside of the dust collection hood 4, and a spring 4052 is also arranged between the opening and closing plate 405 and the inner wall of the dust collection hood 4. At the upper end inside the collection box 41, there is a lower guide port 411, and the lower guide port 411 has a cavity structure with a wider upper part and a narrower lower part, which conducts the coal dust entering the inside of the collection box 41 downwards. A filter plate 412 is installed below the lower guide port 411, and the filter plate 412 filters the coal dust. A return cavity 413 is arranged below the filter plate 412, and the return cavity 413 is connected in communication with the inside of the water tank 5. At the top end inside the collection box 41, there is also a flow pipe 414 embedded. The lower end of the flow pipe 414 is provided with a spray head 415, and the spray head 415 is located above the lower guide port 411. The flow pipe 414 is connected in communication with a water pump 53 arranged at the upper end of the water tank 5. When the water pump 53 works, it discharges the water source inside the water tank 5 to the flow pipe 414, and then through multiple spray heads 415, the water source is sprayed downwards to spray and reduce the dust of the coal dust inside the collection box 41. On both side ends of the filter plate 412, there is a clamping block 4121 each. Inside the collection box 41, there is an adapter plate 4122, and a clamping groove 1221 is embedded at the inner end of the adapter plate 4122. The clamping block 4121 is slidably clamped and installed inside the clamping groove 1221, and in cooperation with the clamping plate 1222 at the end of the adapter plate 4122, it limits the rotation of the filter plate 412, and the filter plate 412 is clamped and installed inside the collection box 41. A spring guide rod 1223 also penetrates through the adapter plate 4122, and the spring guide rod 1223 is fixedly installed inside the collection box 41. A lower guide piece 1224 is also arranged at the upper end of the adapter plate 4122.

[0019] As a further improvement of the present invention, a water pump 53 and a controller 51 are provided at the upper end of the water tank 5. The controller 51 starts the two water pumps 53 to operate synchronously to transport the water source inside the water tank 5 into the inside of the water suction pipe 54. The upper end of the water suction pipe 54 is connected with a water guiding hose 55, the upper end of the water guiding hose 55 is connected with a water cannon head 56, and a cylinder 57 is provided at the bottom of the water cannon head 56. The cylinder 57 is fixedly installed at the upper end of the collection box 41; a collecting cavity 561 is embedded inside the water cannon head 56, and the collecting cavity 561 is connected to the water guiding hose 55 in a through manner. A plurality of shunt pipes 562 are also connected to the collecting cavity 561, and an atomizing nozzle 563 is connected to each shunt pipe 562. The atomizing nozzle 563 is located at the left end opening of the water cannon head 56. A lifter 52 is also installed inside the water tank 5. The lifter 52 is composed of a telescopic hose 521, a weight 522, a hollow plate 523, a hollow pipe 524 and a floating ball 525. The upper end of the telescopic hose 521 is fixed to the upper end inside the water tank 5 and is connected to the lower end of the water pump 53 in a through manner. A weight 522 is fixedly installed at the bottom of the telescopic hose 521, and the lower end of the telescopic hose 521 passes through the inside of the hollow plate 523. Four hollow pipes 524 are connected to the outside of the hollow plate 523, and a floating ball 525 is provided at the connecting end of each of the four hollow pipes 524; In the present invention, the handrail push frame 3 pushes the moving wheels 2 at the bottom of the support plate 1 to move in the coal mine site. At the same time, the dust suction fan 43 is started. Under the through connection of the air suction inlet pipe 44 and the connecting pipe 401, a negative pressure is generated in the negative pressure cavity 402 inside the dust collection cover 4. At this time, the opening and closing plate 405 can rotate by itself to open the left end of the dust collection cover 4. The coal dust at a lower position is sucked from the dust collection cover 4. At the same time, the angle of the dust collection cover 4 is changed by the telescopic movement of the electric push rod 45, so as to expand the range of the dust collection cover 4 for sucking coal dust. And under the through connection of the air guide pipe 42, the coal dust enters the inside of the dust collection cover 4. When the dust suction fan 43 stops working, the opening and closing plate 405 automatically resets and closes, preventing other external sundries from entering the inside of the negative pressure cavity 402 and causing blockage when not working. The coal dust entering the inside of the collection box 41 is guided by the lower guide port 411 to fully contact the filter plate 412. And under the action of the spring guide rod 1223 applying a lifting elastic force to the connecting plate 4122, the filter plate 412 elastically filters the coal dust, improving the comprehensiveness of the coal dust for dust reduction and collection. At the same time, the controller 51 controls the water pump 53 to work. Under the pumping of the water pump 53, the water source inside the water tank 5 is transported to the inside of the water suction pipe 54 and the water guiding hose 55 through the weight 522 and the telescopic hose 521, and finally enters the collecting cavity 561 inside the water cannon head 56. The water source enters into a plurality of shunt pipes 562 and atomizing nozzles 563 for atomizing and spraying to perform the dust reduction work on the coal dust. And the cylinder 57 drives the water cannon head 56 to lift and lower, so as to adjust the height of the atomizing nozzles 563 inside the water cannon head 56 and perform comprehensive dust reduction work on the coal dust at different heights.

[0020] A preferred technical solution is that the negative pressure chamber 402 has a cavity structure with a wide inlet end and a narrow outlet end, and cooperates with a plurality of flow guiding plates 403 inside to form a flow guiding state from left to right. Starting the dust suction fan 43 can effectively suck the coal dust below the coal mine production from inside the dust collection hood 4, and discharge it into the collection box 41 through the through connection of the air suction inlet pipe 44 and the air guide pipe 42 for centralized collection, improving the comprehensiveness of the dust reduction treatment for coal dust; A preferred technical solution is that two opening and closing plates 405, torsion shafts 4051 and springs 4052 are provided, and they are arranged symmetrically up and down at the upper and lower ends on the left side inside the dust collection hood 4. Under the elastic action exerted by the torsion shafts 4051 and springs 4052, when the dust suction fan 43 works and a negative pressure is generated inside the negative pressure chamber 402, the opening and closing plate 405 can rotate by itself to open the left end of the dust collection hood 4, ensuring the normal adsorption of coal dust. When the dust suction fan 43 stops working, the opening and closing plate 405 automatically resets and closes, preventing other external sundries from entering the negative pressure chamber 402 and causing blockage when not working; A preferred technical solution is that two connecting plates 4122 are provided and are installed symmetrically left and right. Through the connecting plates 4122 on both sides, the filter plate 412 can be transversely clamped and fixed as a whole, and the spring guide rod 1223 exerts a lifting elastic force on the connecting plate 4122 and the lower guide piece 1224 conducts downward, so that the coal dust entering the collection box 41 can fully contact the filter plate 412, and the filter plate 412 elastically filters it, improving the comprehensiveness of the dust reduction and collection of coal dust; A preferred technical solution is that the cylinder 57 is installed vertically. The telescopic movement of the cylinder 57 drives the water cannon head 56 to lift, thereby adjusting the height of the atomizing nozzle 563 inside the water cannon head 56. And through the flexible through connection of the water guide hose 55, after the height of the atomizing nozzle 563 is adjusted, the water source inside the water tank 5 can be stably atomized and sprayed out, so as to comprehensively carry out the dust reduction work on coal dust at different heights; A preferred technical solution is that the floating ball 525, the hollow pipe 524 and the hollow plate 523 can float at the highest position of the water level inside the water tank 5, supporting the telescopic hose 521 and the weight increasing head 522 on the water surface, changing according to the height change of the water source inside the water tank 5, ensuring that the water source inside the water tank 5 can be comprehensively pumped upwards, and preventing the atomizing nozzle 563 from interrupting the atomization and spraying of the water source and affecting the dust reduction effect. Using the technical solution of the present invention, or those skilled in the art being inspired by the technical solution of the present invention to design similar technical solutions and achieving the above technical effects shall all fall within the protection scope of the present invention.

Claims

1. A coal dust spraying and dust suppression device for safe production in coal mines, the structure of which comprises a support plate (1), a moving wheel (2), a push frame (3), a dust collecting hood (4) and a water tank (5), wherein each of the four corners of the bottom of the support plate (1) is provided with a moving wheel (2), and the push frame (3) is welded to the right end surface of the support plate (1), the dust collecting hood (4) is arranged at the left end of the support plate (1), and the water tank (5) is installed on the upper surface of the right end of the support plate (1), characterized in that: A support arm (46) is provided at both the front and rear ends of the dust collecting hood (4), and the support arm (46) stands vertically on the upper surface of the left end of the support plate (1). An electric push rod (45) is also provided at the right end of the dust collecting hood (4) and is connected by an axis. The lower end of the electric push rod (45) is connected to the axis of the upper surface of the support plate (1). The right end of the dust collecting hood (4) is also connected to an air intake pipe (44), and the right end of the air intake pipe (44) is connected to a dust collecting fan (43) provided on the upper surface of the support plate (1). An air guide pipe (42) is provided at the right end of the dust collecting fan (43) and is connected to the inside of a collection box (41) installed on the upper surface of the support plate (1). The dust collecting hood (4) is provided with a connecting pipe (401) which is in continuous connection with the air inlet pipe (44), and a negative pressure chamber (402) is also embedded in the dust collecting hood (4) which is in continuous connection with the connecting pipe (401). A guide plate (403) is welded inside the negative pressure chamber (402) to guide the gas toward the connecting pipe (401).

2. The coal dust spraying and dust suppression device for safe production in coal mines according to claim 1 is characterized by: The left end of the interior of the dust collecting hood (4) is also provided with a grille bar (404) and an opening and closing plate (405); the edge end of the opening and closing plate (405) is provided with a torsion shaft (4051) hinged to the interior of the dust collecting hood (4); and a spring (4052) is also provided between the opening and closing plate (405) and the inner wall of the dust collecting hood (4).

3. The coal dust spraying and dust suppression device for safe production in coal mines according to claim 1 is characterized in that: A lower guide port (411) is provided at the upper end of the interior of the collection box (41). The lower guide port (411) is a cavity structure that is wide at the top and narrow at the bottom, and conducts the coal dust that enters the interior of the collection box (41) downward. A filter plate (412) is installed below the lower guide port (411). The filter plate (412) filters the coal dust. A reflux chamber (413) is provided below the filter plate (412). The reflux chamber (413) is connected to the interior of the water tank (5). A flow pipe (414) is also embedded at the top end of the interior of the collection box (41). A spray head (415) is provided at the lower end of the flow pipe (414), and the spray head (415) is located above the lower guide port (411). The flow pipe (414) is connected to a water pump (53) provided at the upper end of the water tank (5).

4. The coal dust spraying and dust suppression device for safe production in coal mines according to claim 3 is characterized by: A clamping block (4121) is provided at both ends of the filter plate (412), a connecting plate (4122) is provided inside the collection box (41), and a clamping groove (1221) is embedded in the inner end of the connecting plate (4122), the clamping block (4121) is slidably engaged and installed inside the clamping groove (1221), and cooperates with the clamping plate (1222) at the end of the connecting plate (4122) to rotate and limit the filter plate (412), so that the filter plate (412) is clamped and installed inside the collection box (41), a spring guide rod (1223) is also passed through the connecting plate (4122), and the spring guide rod (1223) is fixedly installed inside the collection box (41), and a lower guide plate (1224) is also provided at the upper end of the connecting plate (4122).

5. The coal dust spraying and dust suppression device for safe production in coal mines according to claim 3 is characterized by: The water pump (53) and the controller (51) are arranged at the upper end of the water tank (5). The two water pumps (53) are started by the controller (51) to operate synchronously to transport the water source inside the water tank (5) to the inside of the water pumping pipe (54). The upper end of the water pumping pipe (54) is connected to a water guide hose (55). The upper end of the water guide hose (55) is connected to a water monitor head (56). A cylinder (57) is arranged at the bottom of the water monitor head (56). The cylinder (57) is fixedly mounted on the upper end of the collection box (41). The water monitor head (56) has a collecting chamber (561) embedded therein, and the collecting chamber (561) is connected to the water guide hose (55). The collecting chamber (561) is also connected to a plurality of flow diversion pipes (562), and each flow diversion pipe (562) is connected to an atomizing nozzle (563). The atomizing nozzle (563) is located at the left end opening of the water monitor head (56).

6. The coal dust spraying and dust suppression device for safe production in coal mines according to claim 5, characterized in that: A lifter (52) is also installed inside the water tank (5), and the lifter (52) is composed of a telescopic hose (521), a weight-increasing head (522), a hollow plate (523), a hollow tube (524), and a floating ball (525). The upper end of the telescopic hose (521) is fixed to the upper end of the water tank (5) and is connected to the lower end of the water pump (53). The weight-increasing head (522) is fixedly installed at the bottom of the telescopic hose (521), and the lower end of the telescopic hose (521) passes through the hollow plate (523). Four hollow tubes (524) are connected to the outside of the hollow plate (523), and a floating ball (525) is provided at the connecting ends of the four hollow tubes (524).

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