Fire preventing and extinguishing device for coal mine

Abstract

The utility model discloses a fire preventing and extinguishing device for a coal mine, which relates to the technical field of fire extinguishing devices and comprises a tank body, an electric valve pipe is connected to the lower end of the tank body in a penetrating manner, a pressure relief tank is mounted at the upper end of the tank body, a plurality of spraying pipes are connected to the lower end of the electric valve pipe, and an anti-seismic support is jointly connected among the spraying pipes. A cover is connected to the lower end of the pressure relief tank, a second piston is movably connected to the inner cylindrical surface of the tank body, a first piston is movably connected to the inner cylindrical surface of the pressure relief tank, a chemical eruption agent is arranged at the upper end of the first piston, and a connecting rod is installed at the lower end of the first piston; and the lower end of the connecting rod is movably inserted into the tank body and is fixedly connected with the second piston. By arranging the buffering part, the downward moving speed of the first piston and the second piston can be buffered, the impact of the movement of the first piston and the second piston on the internal structure of equipment is reduced, and the internal parts of the device are protected from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire extinguishing device technical field, especially in coal mine is with fire extinguishing device. BACKGROUND

[0002] Mine is the general term of the shaft, chamber, equipment, ground building and structure of the underground coal mine production system, with the need of social development, more and more coal mines are developed, so more and more mines are created, and because there are more coal resources in the mine, once a fire occurs, it will cause great loss, and the mine itself is a channel, once a fire occurs, the fire will spread rapidly, causing irreparable loss, and it is necessary to install a fire extinguishing device in the mine.

[0003] The prior art (publication number: CN 210494963 U) discloses a piston type clean non-pressure fire extinguishing device, which comprises a storage part, a gas generating part, a piston and a spraying part.

[0004] The above-mentioned patent ensures that the device is safe and reliable before and after work, and the extinguishing agent after spraying enters the fire space to implement fire extinguishing, but has the following disadvantages: because the gas generating agent will release a large amount of gas in an instant, the piston will be subjected to great impact force, the piston will quickly collide with the internal structure of the device, which may cause component wear, damage or deformation, shorten the service life of the equipment, and the extinguishing agent may be sprayed too much in an instant, causing waste of the extinguishing agent, which needs to be further improved, and therefore we propose a coal mine fire extinguishing device. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a coal mine fire extinguishing device, which can effectively solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is:

[0007] The utility model provides a kind of coal mine fire prevention and extinguishing device, including tank, the lower end of the tank is connected with electric valve pipe, the upper end of the tank is equipped with pressure relief tank, the lower end of the electric valve pipe is connected with several spray pipes, several The spray pipes are jointly connected with anti-vibration support, the lower end of the pressure relief tank is connected with lid, the inner cylindrical surface of the tank is movably connected with second piston, the inner cylindrical surface of the pressure relief tank is movably connected with first piston, the upper end of the first piston is provided with chemical blasting agent, the lower end of the connecting rod is movably inserted into the tank and is fixedly connected with the second piston, the upper end of the lid is fixedly inserted and connected with igniter, the lower inner wall of the pressure relief tank is equipped with buffer component.

[0008] Preferably, the buffer component includes guide rods, the guide rods are arranged in a ring array, the guide rods are mounted on the lower inner wall of the pressure relief tank, the guide rods are movably inserted into the upper side of the first piston, and the outer surfaces of the guide rods are movably sleeved with first springs.

[0009] Preferably, the upper end of the first spring is fixedly connected with the lower end of the first piston, and the lower end of the first spring is fixedly connected with the lower inner wall of the pressure relief tank.

[0010] Preferably, the upper end of the first piston is movably connected with a retaining ring, and the retaining ring is fixedly connected with the pressure relief tank.

[0011] Preferably, the outer surface of the tank is fixedly inserted and connected with an inlet valve pipe, and the upper end of the pressure relief tank is fixedly inserted and connected with a pressure relief valve pipe.

[0012] Preferably, the lid is detachably connected with the pressure relief tank.

[0013] Preferably, the outer surface of the pressure relief tank is mounted with two left-right symmetrically distributed frame bodies, the inner parts of the two frame bodies are movably sleeved with pull rods, the outer surfaces of the two pull rods are fixedly connected with circular rings, the ends of the two circular rings away from each other are fixedly connected with second springs, the second springs are movably sleeved on the outer surfaces of the pull rods, the two pull rods are movably inserted into the lid, and the second springs and the circular rings are located in the frame bodies.

[0014] Preferably, the upper end of the anti-vibration support is mounted with a detection sensor.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1、By setting the buffer component can buffer the first piston and the second piston to move down speed, when the first piston produces a large amount of gas, the first piston moves down, the first spring can absorb a part of the kinetic energy of the first piston, slow down its moving speed, reduce the impact of the first piston and the second piston on the internal structure of the equipment, protect the internal components from damage, prolong the service life of the equipment, avoid the fire extinguishing agent from being sprayed too much at a moment, reduce the waste of fire extinguishing agent;

[0017] 2、By setting the pull rod, the second spring and the ring together can facilitate the disassembly of the cover, when the internal chemical spray agent of the fire extinguishing device needs to be replaced, pull the pull rod on both sides, so that the pull rod is away from the cover, and the cover can be disassembled, when installing, pull the pull rod on both sides, then loosen the pull rod on both sides, and the pull rod enters the cover, so that the cover can be fixed, the operation is simple, the operation time is short, and the replacement efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The whole structure of the coal mine fire extinguishing device is shown in the embodiment.

[0019] Figure 2 The cross-sectional structure of the tank and the pressure relief tank is shown in the embodiment.

[0020] Figure 3 The structure of the buffer component is shown in the embodiment.

[0021] Figure 4 The cross-sectional structure of the cover and the pressure relief tank 8 is shown in the embodiment.

[0022] In the figure: 1, support; 2, tank; 3, feed valve pipe; 4, electric valve pipe; 5, spray pipe; 6, anti-vibration support; 7, detection sensor; 8, pressure relief tank; 9, cover; 10, pressure relief valve pipe; 11, igniter; 12, chemical spray agent; 13, first piston; 14, second piston; 15, check ring; 16, buffer component; 17, connecting rod; 161, guide rod; 162, first spring; 18, frame; 19, pull rod; 20, second spring; 21, ring. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described in combination with specific embodiments.

[0024] In the description of the utility model, it needs to explain, the term "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and so on indicate the position relation or location relation is based on the position relation or location relation shown in the drawing, only is for the convenience of describing the utility model and simplifying the description, and is not indicate or imply that the device or element must have a particular orientation, construct and operate in a particular orientation, therefore cannot be understood as the limitation of the utility model. In addition, the term "first", "second" is only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, the term "installation", "set with", "connection" and so on, should do broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integrally connected; can be mechanical connection, also can be electrical connection; can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements. For the ordinary skilled person in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0026] As Figures 1-4 The utility model provides a kind of fire extinguishing device for coal mine as shown in figure, including tank 2, the lower end of tank 2 is supported and fixed by support 1, the lower end of tank 2 is connected with electric valve pipe 4 by inserting, tank 2 is equipped with perfluorocyclohexanone extinguishing agent liquid inside, perfluorocyclohexanone extinguishing agent liquid is less to the influence of electronic equipment, the upper end of tank 2 is installed with pressure relief tank 8, the lower end of electric valve pipe 4 is connected with several spray pipes 5, several spray pipes 5 are jointly connected with shock absorber 6, shock absorber 6 is used to improve the stability when spray pipe 5 is installed, the lower end of pressure relief tank 8 is connected with lid 9, lid 9 and pressure relief tank 8 between are provided with sealing ring that improves sealing, the inner cylindrical surface of tank 2 is movably connected with second piston 14, the inner cylindrical surface of pressure relief tank 8 is movably connected with first piston 13, the upper end of first piston 13 is provided with chemical spouting agent 12, chemical spouting agent 12 is specifically sodium azide, the lower end of first piston 13 is installed with connecting rod 17, the lower end of connecting rod 17 is movably inserted into tank 2 and is fixedly connected with second piston 14, the upper end of lid 9 is fixedly inserted and connected with igniter 11, when fire occurs, control igniter 11 ignites chemical spouting agent 12, chemical spouting agent 12 generates a large amount of gas, pushes first piston 13 to move downwards, first piston 13 pushes second piston 14 to move downwards by connecting rod 17, extinguishing agent liquid in tank 2 is pushed out into spray pipe 5 by electric valve pipe 4, is sprayed, and is extinguished, however, due to chemical spouting agent 12 can release a large amount of gas in an instant, piston will be subjected to great impact force, piston will quickly collide with the internal structure of device, possibly leading to component wear, damage or deformation, shorten the service life of equipment, and extinguishing agent can be sprayed too much in an instant.

[0027] In order to solve the above-mentioned disadvantages, the buffer component 16 is installed on the lower inner wall of the pressure relief tank 8, which is used to slow down the speed of the downward movement of the first piston 13 and the second piston 14. Specifically, the buffer component 16 includes guide rods 161, which are arranged in a ring array and are installed on the lower inner wall of the pressure relief tank 8. The guide rods 161 are movably inserted into the upper side of the first piston 13. The outer surfaces of the guide rods 161 are movably sleeved with first springs 162. The elastic force between the first springs 162 is smaller than the pressure of the gas generated by the complete combustion of the chemical spouting agent 12. The upper end of the first spring 162 is fixedly connected with the lower end of the first piston 13, and the lower end of the first spring 162 is fixedly connected with the lower inner wall of the pressure relief tank 8. When the first piston 13 generates a large amount of gas, the first piston 13 moves downward, and the first spring 162 can absorb part of the kinetic energy of the first piston 13, slow down its movement speed, reduce the impact of the movement of the first piston 13 and the second piston 14 on the internal structure of the equipment, protect the internal components from damage, prolong the service life of the equipment, avoid the excessive spouting of the fire extinguishing agent at a moment, and reduce the waste of the fire extinguishing agent.

[0028] The upper end of the first piston 13 is movably connected with a retaining ring 15, which is used to limit the position of the uppermost side of the first piston 13. The retaining ring 15 is fixedly connected with the pressure relief tank 8.

[0029] After the spraying is completed, the outer surface of the tank body 2 is fixedly connected with a feeding valve pipe 3, and the upper end of the pressure relief tank 8 is fixedly connected with a pressure relief valve pipe 10. The gas in the pressure relief tank 8 is discharged through the pressure relief valve pipe 10. The first spring 162 no longer drives the first piston 13 and the second piston 14 to move upward to the initial position, and new fire extinguishing agent is injected through the feeding valve pipe 3.

[0030] In order to facilitate the replacement of the chemical spouting agent 12, the cover 9 is detachably connected with the pressure relief tank 8. Two frame bodies 18 are symmetrically arranged on the outer surface of the pressure relief tank 8. A pull rod 19 is movably sleeved in each of the two frame bodies 18. A circular ring 21 is fixedly connected with the outer surface of each of the two pull rods 19. A second spring 20 is fixedly connected with the end of each of the two circular rings 21 away from each other. The second spring 20 is movably sleeved on the outer surface of the pull rod 19. The two pull rods 19 are movably inserted into the cover 9. The second spring 20 and the circular ring 21 are located in the frame body 18. When the internal chemical spouting agent 12 of the fire extinguishing device needs to be replaced, the pull rod 19 on both sides is pulled away from the cover 9, so that the cover 9 can be detached. When installing, the pull rod 19 on both sides is pulled to align the fixing hole of the cover 9. The second spring 20 is compressed, and then the pull rod 19 on both sides is released. The pull rod 19 enters the cover 9 under the action of the second spring 20 to complete the fixation. The operation is simple, the operation time is short, and the replacement efficiency is improved.

[0031] The upper end of the anti-seismic support 6 is provided with a detection sensor 7, which is specifically composed of a temperature sensor, a smoke sensor and a combustible gas sensor, and is used for detecting whether a fire occurs or not, and then sending a signal to a controller to improve the automation degree.

[0032] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A fire extinguishing and preventing device for coal mines, comprising a tank (2), characterized in that: The lower end of the tank body (2) is connected with an electric valve pipe (4), the upper end of the tank body (2) is provided with a pressure relief tank (8), the lower end of the electric valve pipe (4) is connected with a plurality of spray pipes (5), the plurality of spray pipes (5) are connected with an anti-vibration support (6) in common, the lower end of the pressure relief tank (8) is connected with a cover (9), the inner cylindrical surface of the tank body (2) is movably connected with a second piston (14), the inner cylindrical surface of the pressure relief tank (8) is movably connected with a first piston (13), the upper end of the first piston (13) is provided with a chemical blasting agent (12), the lower end of the first piston (13) is provided with a connecting rod (17), the lower end of the connecting rod (17) is movably inserted into the tank body (2) and is fixedly connected with the second piston (14), the upper end of the cover (9) is fixedly inserted with a lighter (11), and the lower inner wall of the pressure relief tank (8) is provided with a buffer component (16).

2. The fire extinguishing device for coal mine according to claim 1, characterized in that: The buffer component (16) comprises guide rods (161), the guide rods (161) are arranged in an annular array, the guide rods (161) are movably inserted into the upper side of the first piston (13), and the outer surfaces of the guide rods (161) are movably sleeved with first springs (162).

3. The fire extinguishing device for coal mine according to claim 2, characterized in that: The upper end of the first spring (162) is fixedly connected with the lower end of the first piston (13), and the lower end of the first spring (162) is fixedly connected with the lower inner wall of the pressure relief tank (8).

4. The fire extinguishing device for coal mine according to claim 1, characterized in that: The upper end of the first piston (13) is movably connected with a check ring (15), and the check ring (15) is fixedly connected with the pressure relief tank (8).

5. The fire extinguishing device for coal mine according to claim 1, characterized in that: The outer surface of the tank body (2) is fixedly inserted with an inlet valve pipe (3), and the upper end of the pressure relief tank (8) is fixedly inserted with a pressure relief valve pipe (10).

6. The fire extinguishing device for coal mine according to claim 1, characterized in that: The cover (9) is detachably connected with the pressure relief tank (8).

7. The fire extinguishing device for coal mine according to claim 6, characterized in that: The outer surface of the pressure relief tank (8) is provided with two left and right symmetrical frame bodies (18), the interiors of the two frame bodies (18) are movably sleeved with pull rods (19), the outer surfaces of the two pull rods (19) are fixedly connected with circular rings (21), the ends of the two circular rings (21) away from each other are fixedly connected with second springs (20), the second springs (20) are movably sleeved on the outer surfaces of the pull rods (19), the two pull rods (19) are movably inserted into the cover (9), and the second springs (20) and the circular rings (21) are located in the frame bodies (18).

8. The fire extinguishing device for coal mine according to claim 1, characterized in that: The upper end of the anti-vibration support (6) is provided with a detection sensor (7).

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