Novel roadway full-section water curtain device

Abstract

The utility model discloses a novel roadway full-section water curtain device which comprises an iron net which is fixed on the section of a roadway and matched with the section of the roadway in shape, the two sides of the iron net are wrapped with a layer of dustproof net, and an arch-shaped water spraying pipe is fixed to the portion, located between the two layers of dustproof nets, of the top of the roadway. More than one spray head is connected to the water spraying pipe, and the spraying direction of the spray head faces the dust screen; a notch allowing the belt conveyor to pass through is formed in the lower portion of the iron net, and a small door allowing workers to pass through is arranged at the position, located on one side of the belt conveyor, of the lower portion of the iron net. The device is very intelligent, can measure the real-time dust concentration, realizes automatic water spraying and dust falling when the dust concentration reaches more than 10mg / m < 3 >, and automatically stops water spraying when the dust concentration is reduced to less than 9mg / m < 3 >, so that the damage of dust in a roadway to the bodies of underground workers can be avoided, and explosion caused by the dust is avoided.

Description

Technical Field

[0001] The utility model relates to a new type of full-section water curtain device for a tunnel, belonging to the technical field of coal mine dust prevention equipment. Background Art

[0002] During the excavation of coal mine tunnels, the dust in the tunnels is harmful to the health of underground workers and may also cause explosions. Therefore, dust removal is required inside the coal mine tunnels. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a novel full-section water curtain device for a tunnel to solve the technical problems existing in the above-mentioned prior art.

[0004] The technical solution adopted by the utility model is: a new type of full-section water curtain device for the tunnel, including an iron mesh fixed on the tunnel cross-section and matching the tunnel cross-section shape, with a layer of dust-proof net wrapped on both sides of the iron mesh, and an arched sprinkler pipe fixed on the part of the tunnel top located between the two layers of the dust-proof nets, and one or more sprinkler heads connected to the sprinkler pipe, the spraying direction of the sprinkler heads being toward the dust-proof net; a gap is provided at the lower part of the iron mesh to allow the belt conveyor to pass through, and a small door for staff to pass through is provided at the lower part of the iron mesh located on one side of the belt conveyor.

[0005] Preferably, the sprinkler pipe is provided with a solenoid valve, and the solenoid valve is electrically connected to a controller.

[0006] Preferably, a dust concentration sensor is installed on the top of the tunnel, and the dust concentration sensor is electrically connected to the solenoid valve through the controller.

[0007] Preferably, an infrared sensor is installed on the side wall of the lane, and the infrared sensor is electrically connected to the solenoid valve through the controller.

[0008] Preferably, a water receiving trough is provided above the belt conveyor, and the water receiving trough is fixed on the frame of the belt conveyor.

[0009] Preferably, a drainage ditch is provided on the ground of the tunnel below the iron mesh.

[0010] Preferably, the lower end of the water receiving trough is connected to the drainage ditch through a pipe.

[0011] The beneficial effects of the present invention are as follows: compared with the prior art, when the tunnel boring machine of the present invention is cutting normally and the water curtains of the three new tunnel sections are all opened, the comprehensive dust concentration of the working face is 196.8 mg / m³, the comprehensive dust concentration outside the third full-section spray is 88.6 mg / m³, and the dust reduction rate is approximately (196.8 mg / m³-88.6 mg / m³) / 196.8 mg / m³≈55%; the respirable dust concentration of the working face is 131.8 mg / m³, the respirable dust concentration outside the third full-section spray is 33.5 mg / m³, and the dust reduction rate is (131.8 mg / m³-33.5 mg / m³) / 131.8 mg / m³≈74.6%; the present invention can prevent the dust in the tunnel from causing harm to the bodies of underground workers and avoid explosions caused by dust.

[0012] 2. The utility model is simple to process and install and easy to use.

[0013] 3. This utility model is very intelligent and can measure the real-time dust concentration. When the dust concentration reaches 10mg / m 3 When the dust concentration is above 9mg / m 3 When the temperature is below 0.5, the sprinkler will be automatically shut off.

[0014] 4. This utility model is very user-friendly. It will automatically close when a person passes by, and automatically start spraying 6 seconds after the person passes by to prevent the person from getting wet when passing by. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] The reference numerals in the drawings of the specification include: iron mesh 1, water receiving trough 2, belt conveyor 3, frame 4, drainage ditch 5, small door 6, infrared sensor 7, sprinkler pipe 8, nozzle 9, dust concentration sensor 10. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] Example 1:

[0019] New tunnel full-section water curtain device, such as Figure 1As shown, it includes an iron mesh 1 fixed on the cross section of the tunnel and matching the cross section shape of the tunnel. The iron mesh 1 is welded by four iron pipes. The front and rear sides of the iron mesh 1 are respectively wrapped with a layer of dustproof net. An arched sprinkler pipe 8 is fixed on the part between the two layers of dustproof nets at the top of the tunnel. Eleven nozzles 9 are evenly spaced and connected to the sprinkler pipe 8. The spraying directions of adjacent nozzles 9 are alternately toward the dustproof nets on both sides. A solenoid valve is provided on the sprinkler pipe 8, and the solenoid valve is electrically connected to the controller. A dust concentration sensor 10 is installed on the top of the tunnel, and the dust concentration sensor 10 is electrically connected to the solenoid valve through the controller. When the dust concentration sensor 10 detects that the dust concentration in the tunnel reaches 10mg / m 3 When the dust concentration sensor 10 controls the electromagnetic valve to open through the controller, water mist is sprayed from the nozzle 9 to achieve the purpose of automatic water spraying and dust reduction. After stopping the excavation, the dust concentration in the tunnel is reduced to 9mg / m 3 When the dust concentration sensor 10 controls the solenoid valve to be closed through the controller, the dust concentration sensor 10 controls the solenoid valve to be closed.

[0020] like Figure 1 As shown, a gap is provided at the bottom of the iron mesh 1 to allow the conveyor belt 3 to pass through. A water trough 2 is provided above the conveyor belt 3. The trough 2 is fixed to the frame 4 of the conveyor belt 3 to prevent water from flowing onto the belt. A drainage ditch 5 with a width of 300mm and a depth of 300mm is dug on the tunnel floor directly below the iron mesh 1. The lower end of the trough 2 is connected to the drainage ditch 5 via a pipe, allowing water to be discharged along the drainage ditch 5.

[0021] like Figure 1 As shown, a small door 6 for workers to pass through is provided at the lower part of the iron mesh 1 on the left side of the belt conveyor 3, and an infrared sensor 7 is installed on the side wall of the tunnel. The infrared sensor 7 is electrically connected to the solenoid valve through a controller.

[0022] When a worker passes through the small door 6, the infrared sensor 7 recognizes that there is a person in the watering area, and the infrared sensor 7 controls the solenoid valve to close through the controller. After the person passes, the infrared sensor 7 controls the solenoid valve to open through the controller. In this embodiment, the controller is set to wait for 6 seconds after the person passes before the solenoid valve opens again.

[0023] The above is only a specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. New type of tunnel full-section water curtain device, characterized by: It includes an iron mesh fixed on the cross-section of the tunnel and matching the cross-section shape of the tunnel, with a layer of dust-proof net wrapped on both sides of the iron mesh, and an arched sprinkler pipe fixed on the top of the tunnel between the two layers of the dust-proof net. The sprinkler pipe is connected to one or more nozzles, and the spraying direction of the nozzles is toward the dust-proof net; a gap is provided at the bottom of the iron mesh to allow the belt conveyor to pass through, and a small door for staff to pass through is provided at the bottom of the iron mesh on one side of the belt conveyor.

2. The new tunnel full-section water curtain device according to claim 1 is characterized by: The sprinkler pipe is provided with a solenoid valve, and the solenoid valve is electrically connected to a controller.

3. The new tunnel full-section water curtain device according to claim 2 is characterized by: A dust concentration sensor is installed on the top of the tunnel, and the dust concentration sensor is electrically connected to the solenoid valve through the controller.

4. The new tunnel full-section water curtain device according to claim 3 is characterized by: An infrared sensor is installed on the side wall of the lane, and the infrared sensor is electrically connected to the solenoid valve through the controller.

5. The new tunnel full-section water curtain device according to claim 1 is characterized by: A water receiving trough is provided above the belt conveyor and is fixed on the frame of the belt conveyor.

6. The novel tunnel full-section water curtain device according to claim 5 is characterized by: A drainage ditch is provided on the ground of the tunnel below the iron mesh.

7. The novel tunnel full-section water curtain device according to claim 6 is characterized by: The lower end of the water receiving trough is connected to the drainage ditch through a pipeline.

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