Fire extinguishing device for underground coal mine

Abstract

The invention relates to the field of coal mine underground fire extinguishing, in particular to a coal mine underground fire extinguishing device which comprises a mine tunnel, a transport vehicle movably lapped on the inner side wall surface of the bottom of the mine tunnel, a water tank fixedly mounted on the top surface of the transport vehicle and swing shafts fixedly mounted on the surfaces of the two sides of the water tank. The butt joint iron pipe is movably connected to the outer side surface of the swing shaft in a sleeving mode, and a water suction pump body is fixedly installed on the surface of one side of the water tank. When entering the dilution cylinder, outside air impacts the outer side surface of a mixing transmission plate, limiting transmission rods at the two ends of the mixing transmission plate rotate on the inner side wall face of the dilution cylinder, and at the moment, through rotation of the mixing transmission plate, air, flue gas and carbon monoxide are mixed; at the moment, the mixed gas is guided to the outside of the mine through the exhaust port, accumulation of flue gas and carbon monoxide in the mine tunnel is reduced, and the situation of secondary spontaneous combustion caused by continuous accumulation of the flue gas is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of underground coal mine fire extinguishing, and in particular relates to a fire extinguishing device for underground coal mines. BACKGROUND

[0002] A coal mine is an area where coal resources are mined by humans in a coal-rich mining area. It is generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the ground surface, a tunnel is generally excavated underground to mine coal, which is an underground coal mine. When the distance between the coal seam and the ground surface is very close, the soil layer on the ground surface is directly stripped to excavate coal, which is an open-pit coal mine.

[0003] A patent cited as CN118442106A discloses a coal mine underground fire extinguishing device, relating to the field of underground coal mine fire extinguishing equipment. The mine is fixedly connected with a connecting part on the side, and a covering part is fixedly connected on the side away from the connecting part. The bottom of the inner wall of the mine is uniformly provided with a through hole. The spraying part is used to spray and extinguish the open fire generated in the mine. When open fire occurs in the mine, the surrounding environment rises, and the liquid in the glass bubble begins to expand. When it expands to a certain extent, the glass bubble breaks, so that the water in the water pipe reaches the connecting box through the connecting pipe to spray. The range of water flow spraying is diffused by the continuous impact of the support, so as to spray and extinguish the open fire in the mine, thereby completing the fire extinguishing work.

[0004] At present, the existing technology, the coal mine underground generally will be provided with fire extinguishing device, thereby can extinguish the fire in the mine, but the existing fire extinguishing device in use, it is not convenient to adjust the height and angle of the spray head, leading to the spray head can not effectively spray water to extinguish the origin of the fire, so that the efficiency of fire extinguishing is reduced.

[0005] Therefore, the present application provides a fire extinguishing device for underground coal mines. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background art.

[0007] The technical scheme adopted by the present application to solve its technical problems is: a fire extinguishing device for underground coal mines, comprising a mine tunnel, a transport vehicle movably connected to the inner side wall of the bottom of the mine tunnel, a water tank fixedly installed on the top surface of the transport vehicle, a swing shaft fixedly installed on the two side surfaces of the water tank, a butt joint iron pipe movably sleeved on the outer surface of the swing shaft, a water pump body fixedly installed on one side surface of the water tank, a water pipe fixedly connected to the output end of the water pump body, a mounting seat fixedly installed on the top surface of the transport vehicle at a side edge position, an electric lead screw arranged on the top surface of the mounting seat, an L-shaped fixing plate threadedly movably sleeved on the output end outer surface of the electric lead screw, three-hole high-pressure nozzles arranged on the outer surface of the L-shaped fixing plate, horizontal pipes arranged on the two side surfaces of the three-hole high-pressure nozzles, L-shaped swing pipes movably sleeved on the inner side wall of the horizontal pipes, atomizing nozzles arranged on one end of the L-shaped swing pipes, and conical differentiation hollow heads arranged on the inner side wall of the three-hole high-pressure nozzles.

[0008] Preferably, the inner side wall of the three-hole high-pressure nozzle is fixedly connected with a clamping block, the clamping block is arranged at the inlet of the horizontal pipe, and the outer surface of the clamping block is fixedly connected to the outer surface of the conical differentiation hollow head.

[0009] Preferably, one end of the water pipe is fixedly connected to the inlet of the three-hole high-pressure nozzle, and support limiting frames are fixedly connected to the two side surfaces of the transport vehicle.

[0010] Preferably, clamping buckles are fixedly connected to the two side surfaces of the water tank at top edge positions, and swing arm plates are fixedly connected to the outer surface of the swing shaft.

[0011] Preferably, a swing ring is swing-connected to the other end of the swing arm plate, and a clamping moving table is fixedly installed on one side surface of the swing ring.

[0012] Preferably, an extrusion butt joint ring is movably sleeved on the top surface of the clamping moving table, and an air suction pump is fixedly installed on the inner side wall of the swing ring.

[0013] Preferably, a gas guide heat-resistant hose is fixedly connected to one end of the butt joint iron pipe, and a dilution cylinder is fixedly connected to the other end of the gas guide heat-resistant hose.

[0014] Preferably, an air inlet pipe is fixedly connected to one side surface of the dilution cylinder, and an air outlet is arranged on the other end of the dilution cylinder.

[0015] Preferably, a limiting transmission rod is movably sleeved on the inner side wall of the dilution cylinder, and a mixing transmission plate is arranged on the outer surface of the limiting transmission rod.

[0016] Preferably, the outer side surface of the swing arm plate is movably sleeved on the top surface of the support limiting frame, and one side surface of the swing arm plate is movably sleeved on the inner side wall surface of the clamping buckle.

[0017] The beneficial effects of the present application are as follows: 1. The fire extinguishing device for underground coal mine disclosed by the present application, when a fire occurs inside the mine, is moved to a point 20 meters away from the fire source in cooperation with the transport vehicle, and water is sprayed out through the water pipe to perform cooling and temperature reduction treatment on the open fire of the coal; at the same time of extinguishing the fire, the electric lead screw on the top surface of the mounting seat is rotated, and the L-shaped fixing plate on the outer side surface of the electric lead screw is lifted, so that the water sprayed by the three-hole high-pressure nozzle is directly sprayed on the top layer of the open fire in the form of a parabola, and the falling water can greatly spread to the open fire and the surrounding positions, thereby achieving the cooling and extinguishing treatment on the open fire and the surrounding area; 2. The fire extinguishing device for underground coal mine disclosed by the present application, when the three-hole high-pressure nozzle sprays water, the water is sprayed out in the form of a water column through the spray hole in the middle region of the three-hole high-pressure nozzle to perform cooling treatment on the open fire, and then the L-shaped swing pipe swings back and forth on the inner side wall surface of the horizontal pipe, at this time, part of the water enters the inside of the L-shaped swing pipe under the blockage of the conical differentiation hollow head, and the water is sprayed out in the form of atomization through the atomizing nozzle at one end of the L-shaped swing pipe, the top layer of the atomized water can greatly block the diffusion of the internal smoke during the burning of the coal mine, the bottom layer of the atomized water can perform temperature reduction treatment on the surrounding positions of the transport vehicle, thereby avoiding the spread of the open fire and reducing the temperature, and at the same time, the upper and lower layers of the atomized water can absorb part of the carbon monoxide generated during the burning of the coal; 3. The fire extinguishing device for underground coal mine disclosed by the present application, when the coal inside the mine is burning, the three-hole high-pressure nozzle is used to perform cooling treatment on the open fire, at this time, part of the smoke and carbon monoxide generated during the burning of the coal will accumulate in the top layer space of the mine tunnel under the driving of the heat source, at this time, the smoke and carbon monoxide in the top layer position of the mine tunnel are gas-absorbed by the air suction pump, thereby reducing the density content of the smoke and carbon monoxide in the top layer of the mine tunnel; 4. The fire extinguishing device for underground coal mine disclosed by the present application, when the external air enters the inside of the dilution cylinder, it will impact on the outer side surface of the mixing transmission plate, and the limiting transmission rods at both ends of the mixing transmission plate will rotate on the inner side wall surface of the dilution cylinder, at this time, the air and the smoke and carbon monoxide are mixed by the rotation of the mixing transmission plate, at this time, the mixed gas is guided to the outside of the mine through the exhaust port, thereby reducing the accumulation of the smoke and carbon monoxide inside the mine tunnel, and avoiding the secondary spontaneous combustion caused by the continuous accumulation of the smoke. BRIEF DESCRIPTION OF DRAWINGS

[0018] The application will be further described below with reference to the drawings.

[0019] Figure 1 is a perspective view of the present application; Figure 2 is a cross-sectional perspective view of the mine tunnel in the present application; Figure 3 is a perspective view of the transport vehicle in the present application; Figure 4 is a perspective view of the transport vehicle in the present application; Figure 5 is a cross-sectional perspective view of the butt joint iron pipe and the air extraction pump in the present application; Figure 6 is a perspective view of the three-hole high-pressure nozzle in the present application; Figure 7 is a cross-sectional perspective view of the three-hole high-pressure nozzle in the present application; Figure 8 is a cross-sectional perspective view of the dilution cylinder in the present application.

[0020] In the figure: 11, mine tunnel; 12, transport vehicle; 121, support limiting frame; 122, water tank; 123, clamping buckle; 124, water pump body; 125, water pipe; 126, mounting seat; 127, electric screw; 128, L-shaped fixing plate; 129, three-hole high-pressure nozzle; a1, cross pipe; a2, L-shaped swing pipe; a3, atomizing nozzle; a4, clamping block; a5, conical differentiation hollow head; 13, swing shaft; 131, swing arm plate; 132, clamping moving table; 133, extrusion butt joint ring; 134, swing ring; 135, air extraction pump; 14, butt joint iron pipe; 141, air guide heat-resistant hose; 142, dilution cylinder; 143, exhaust port; 144, air inlet pipe; 145, limiting transmission rod; 146, mixing transmission plate. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described below in combination with specific embodiments.

[0022] As Figures 1 to 7As shown, the coal mine underground fire extinguishing device of the embodiment of the application comprises a mine tunnel 11, a transport vehicle 12 movably lapping on the inner side wall surface of the bottom of the mine tunnel 11, a water tank 122 fixedly installed on the top surface of the transport vehicle 12, a swing shaft 13 fixedly installed on the two side surfaces of the water tank 122, a butt joint iron pipe 14 movably sleeved on the outer side surface of the swing shaft 13, a water pump body 124 fixedly installed on one side surface of the water tank 122, a water pipe 125 fixedly connected to the output end of the water pump body 124, a mounting seat 126 fixedly installed on the top surface of the transport vehicle 12 and located at one side edge position, an electric screw rod 127 arranged on the top surface of the mounting seat 126, an L-shaped fixing plate 128 threadedly movably sleeved on the output end outer side surface of the electric screw rod 127, three-hole high-pressure nozzles 129 arranged on the outer side surface of the L-shaped fixing plate 128, horizontal pipes a1 arranged on the two side surfaces of the three-hole high-pressure nozzles 129, L-shaped swing pipes a2 movably sleeved on the inner side wall surface of the horizontal pipes a1, atomizing nozzles a3 arranged on one end of the L-shaped swing pipes a2, conical differentiation hollow heads a5 arranged on the inner side wall surface of the three-hole high-pressure nozzles 129, clamping blocks a4 fixedly connected to the inner side wall surface of the conical differentiation hollow heads a5, and the clamping blocks a4 are arranged at the entrances of the horizontal pipes a1.

[0023] When a fire occurs in the mine, the transport vehicle 12 is moved to the fire source point 20 meters away, at this time, the water pump body 124 is used to pump the water source in the water tank 122, and the water is poured into the three-hole high-pressure nozzles 129 through the water pipe 125, and the water source is poured out through the three-hole high-pressure nozzles 129 to spray and cool the open fire of the coal; at the same time of extinguishing the fire, the electric screw rod 127 on the top surface of the mounting seat 126 is rotated, when the electric screw rod 127 rotates, the screw rod rotates on the surface of the L-shaped fixing plate 128, the L-shaped fixing plate 128 is lifted up under the drive of the two screw rods, and the L-shaped fixing plate 128 is lifted up, when the L-shaped fixing plate 128 is lifted up to a high position, the water source sprayed out of the three-hole high-pressure nozzles 129 is in the form of a parabola, and the water source is directly sprayed on the top layer of the open fire in an arc shape, at this time, the falling water source can greatly spread to the open fire and the surrounding position, and the open fire and the surrounding area are cooled and extinguished; The three-hole high-pressure nozzles 129 adopt an integrated nozzle body design, including a water spraying hole, an air hole, an outer butt joint edge and other components, a three-hole cap and a buckle nozzle lock cap combination. When the three-hole high-pressure nozzle 129 sprays the water source, the water source is sprayed out in the form of a water column by using the spray hole in the middle area of the three-hole high-pressure nozzle 129, and the water source in this area is used to cool the open fire, at this time, the L-shaped swing pipe a2 swings back and forth on the inner side wall of the horizontal pipe a1, at this time, part of the water source enters the inside of the L-shaped swing pipe a2 under the blockage of the conical differentiation hollow head a5, and the water source is sprayed out in the form of atomization by the atomizing nozzle a3 on one end of the L-shaped swing pipe a2, the top layer of atomized water source can greatly block the diffusion of internal smoke when the coal is burned, and the bottom layer of atomized water source can cool the surrounding area of the transport vehicle 12, thereby avoiding the spread of open fire and reducing the temperature, and the upper and lower layers of atomized water source can absorb part of the carbon monoxide generated when the coal is burned.

[0024] In some embodiments, as shown in Figures 3 to 5 The two side surfaces of the water tank 122 and located at the top edge position are fixedly connected with the clamping buckle 123, the outer side surface of the swing shaft 13 is fixedly connected with the swing arm plate 131, the other end of the swing arm plate 131 is swingably connected with the swing ring 134, the side surface of the swing ring 134 is fixedly installed with the clamping moving table 132, the top surface of the clamping moving table 132 is movably sleeved with the extrusion butt joint ring 133, and the inner side wall of the swing ring 134 is fixedly installed with the air suction pump 135.

[0025] When the transport vehicle 12 moves to the fire source point 20 meters away, the swing arm plate 131 is swung in cooperation with the swing shaft 13, and the swing arm plate 131 is clamped on the inner side wall of the clamping buckle 123 to limit the position of the swing arm plate 131, at this time, the butt joint iron pipe 14 on one end of the air guide heat-resistant hose 141 is butt jointed with the output end of the air suction pump 135, and the extrusion butt joint ring 133 moves in the inside of the clamping moving table 132, and the butt joint iron pipe 14 is sealed with the output end of the air suction pump 135, when the air suction pump 135 extracts the flue gas and carbon monoxide gas, the air guide heat-resistant hose 141 discharges the flue gas and carbon monoxide gas to the outside of the mine, and the natural air outside is used to dilute the content of carbon monoxide.

[0026] Further, as shown in Figures 1 to 5 and Figure 8 One end of the water pipe 125 is fixedly connected at the inlet of the three-hole high-pressure nozzle 129, the two side surfaces of the transport vehicle 12 are fixedly connected with the support limiting frame 121, one end of the butt joint iron pipe 14 is fixedly connected with the air guide heat-resistant hose 141, the other end of the air guide heat-resistant hose 141 is fixedly connected with the dilution cylinder 142, the side surface of the dilution cylinder 142 is fixedly connected with the air inlet pipe 144, and the other end of the dilution cylinder 142 is provided with the air outlet 143.

[0027] When the coal inside the mine is burned, the three-hole high-pressure nozzle 129 is used to cool the open fire. At this time, part of the smoke and carbon monoxide generated during the burning of the coal will accumulate in the top space of the mine tunnel 11 under the action of the heat source. At this time, the air pump 135 is used to absorb the smoke and carbon monoxide in the top space of the mine tunnel 11, and the smoke is absorbed into the dilution cylinder 142 through the air-resistant hose 141. At this time, the air inlet pipe 144 is used to inject air from outside the mine into the dilution cylinder 142. When the air, smoke, and carbon monoxide accumulate in the dilution cylinder 142, the air will cool the smoke, and the oxygen will dilute the carbon monoxide.

[0028] Further, as shown in Figures 3 to 5 and Figure 8 , the inside wall of the dilution cylinder 142 is movably sleeved with a limiting transmission rod 145, and the outside surface of the limiting transmission rod 145 is provided with a mixing transmission plate 146. The outside surface of the swing arm plate 131 is movably sleeved on the top surface of the supporting limiting frame 121, and one side surface of the swing arm plate 131 is movably sleeved on the inside wall of the clamping buckle 123.

[0029] When the air from outside the mine enters the dilution cylinder 142, it will hit the outside surface of the mixing transmission plate 146, causing the limiting transmission rods 145 at both ends of the mixing transmission plate 146 to rotate on the inside wall of the dilution cylinder 142. At this time, the air, smoke, and carbon monoxide are mixed by the rotation of the mixing transmission plate 146. At this time, the mixed gas is discharged to the outside of the mine through the exhaust port 143, reducing the accumulation of smoke and carbon monoxide in the mine tunnel 11 and avoiding the secondary combustion caused by the continuous accumulation of smoke.

[0030] Working principle: when a fire occurs inside the mine, the transport vehicle 12 moves to the fire point 20 meters away. At this time, the water pump body 124 is used to extract the water in the water tank 122, and the water is injected into the three-hole high-pressure nozzle 129 through the water pipe 125. The water is sprayed out through the three-hole high-pressure nozzle 129 to cool the open fire of the coal. At the same time, the electric screw 127 on the top surface of the mounting seat 126 is rotated to lift the L-shaped fixed plate 128 on the outside surface of the electric screw 127. When the L-shaped fixed plate 128 is lifted to a high position, the water sprayed out of the three-hole high-pressure nozzle 129 will form a parabolic curve, and the water will be sprayed in an arc shape directly on the top of the open fire. At this time, the falling water can spread to the open fire and the surrounding area, thereby cooling and extinguishing the open fire and the surrounding area. When the three-hole high-pressure nozzle 129 sprays the water source, the water source is sprayed in the form of a water column by using the spray hole in the middle area of the three-hole high-pressure nozzle 129, and the water source in this area is used to cool the open fire, at this time, the L-shaped swing pipe a2 swings back and forth on the inner side wall of the horizontal pipe a1, at this time, part of the water source enters the inside of the L-shaped swing pipe a2 under the blockage of the conical differentiation hollow head a5, and the water source is sprayed in the form of atomization by the atomizing nozzle a3 at one end of the L-shaped swing pipe a2, the top layer of the atomized water source can greatly block the diffusion of the internal smoke during the burning of the coal mine, and the bottom layer of the atomized water source can cool the surrounding area of the transport vehicle 12, thereby avoiding the spread of the open fire and reducing the temperature, and the upper and lower layers of the atomized water source can absorb part of the carbon monoxide generated during the burning of the coal; When the coal in the mine burns, the three-hole high-pressure nozzle 129 is used to cool the open fire, at this time, part of the smoke and carbon monoxide generated during the burning of the coal will accumulate in the top space of the mine tunnel 11 under the driving of the heat source, at this time, the smoke and carbon monoxide in the top space of the mine tunnel 11 are gas-absorbed by the air suction pump 135, and the smoke is absorbed into the inside of the dilution cylinder 142 through the gas-conducting heat-resistant hose 141, at this time, the air outside the mine is injected into the inside of the dilution cylinder 142 through the air inlet pipe 144, when the air and the smoke and carbon monoxide accumulated in the dilution cylinder 142, the air will cool the smoke, and the oxygen will dilute the carbon monoxide. When the air outside the mine enters the inside of the dilution cylinder 142, it will hit the outer surface of the mixing transmission plate 146, and the limiting transmission rods 145 at both ends of the mixing transmission plate 146 will rotate on the inner side wall of the dilution cylinder 142, at this time, the air and the smoke and carbon monoxide are mixed by the rotation of the mixing transmission plate 146, at this time, the mixed gas is guided to the outside of the mine through the exhaust port 143, reducing the accumulation of smoke and carbon monoxide in the mine tunnel 11, avoiding the secondary spontaneous combustion caused by the continuous accumulation of smoke.

[0031] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A fire extinguishing device for use in coal mines, comprising a mine tunnel and a transport vehicle movably attached to the inner wall of the mine tunnel bottom, a water tank fixedly mounted on the top surface of the transport vehicle, swing shafts fixedly mounted on both sides of the water tank, and a butt iron pipe movably sleeved on the outer surface of the swing shaft, characterized in that: A water pump body is fixedly installed on one side surface of the water tank, and a water pipe is fixedly connected to the output end of the water pump body. A mounting seat is fixedly installed on the top surface of the transport vehicle and at a side edge position, and an electric screw is provided on the top surface of the mounting seat. An L-shaped fixing plate is movably sleeved with a thread on the outer surface of the output end of the electric screw, and a three-hole high-pressure nozzle is provided on the outer surface of the L-shaped fixing plate. Horizontal tubes are provided on both side surfaces of the three-hole high-pressure nozzle, and an L-shaped swinging tube is movably sleeved on the inner wall of the horizontal tube. An atomizing nozzle is provided on one end of the L-shaped swinging tube, and a conical differentiation hollow head is provided on the inner wall of the three-hole high-pressure nozzle.

2. A fire extinguishing device for use in coal mines according to claim 1, characterized in that: A clamping block is fixedly connected to the inner wall surface of the three-hole high-pressure nozzle. The clamping block is located at the inlet of the horizontal pipe, and the outer surface of the clamping block is fixedly connected to the outer surface of the conical differentiation hollow head.

3. A fire extinguishing device for use in coal mines according to claim 2, characterized in that: One end of the water pipe is fixedly connected to the inlet of the three-hole high-pressure nozzle, and support and limiting frames are fixedly connected to the two side surfaces of the transport vehicle.

4. A fire extinguishing device for use in coal mines according to claim 3, characterized in that: Snap buckles are fixedly connected to both side surfaces of the water tank and at the top edge position, and a swing arm plate is fixedly connected to the outer side surface of the swing shaft.

5. The fire extinguishing device for use in coal mines according to claim 4, characterized in that: The other end of the swing arm plate is swingably connected with a swing ring, and a clamping transfer platform is fixedly installed on one side surface of the swing ring.

6. A fire extinguishing device for use in coal mines according to claim 5, characterized in that: An extrusion docking ring is movably sleeved on the top surface of the clamping transfer platform, and an air extraction pump is fixedly installed on the inner wall surface of the swing ring.

7. The fire extinguishing device for use in coal mines according to claim 1, characterized in that: One end of the butt iron pipe is fixedly connected to a gas-conducting heat-resistant hose, and the other end of the gas-conducting heat-resistant hose is fixedly connected to a dilution cylinder.

8. The fire extinguishing device for use in coal mines according to claim 7, characterized in that: An air inlet pipe is fixedly connected to one side surface of the dilution cylinder, and an air exhaust port is arranged on the other end of the dilution cylinder.

9. The fire extinguishing device for use in coal mines according to claim 8, characterized in that: A limit transmission rod is movably sleeved on the inner wall surface of the dilution cylinder, and a mixing transmission plate is provided on the outer surface of the limit transmission rod.

10. The fire extinguishing device for use in coal mines according to claim 4, characterized in that: The outer surface of the swing arm plate is movably sleeved on the top surface of the support limit frame, and the one side surface of the swing arm plate is movably sleeved on the inner wall surface of the snap buckle.

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