Bidirectional opening type automatic explosion suppression device for underground coal mine

Abstract

The utility model relates to the technical field of explosion-proof devices, in particular to a bidirectional opening type automatic explosion-proof device for an underground coal mine, which comprises an explosion-proof main body with fire extinguishing powder inside, a mounting frame and receiving components, and the receiving components are arranged on two sides of the explosion-proof main body; a gas storage part is arranged in the explosion-proof main body, the outer wall of the gas storage part is sleeved with a connecting sleeve, the outer wall of the gas storage part is sleeved with a sealing ring matched with the connecting sleeve, the gas storage part and the connecting sleeve are each provided with a gas guide hole set, and the two gas guide hole sets are separated by the sealing ring and are not communicated with each other; the two receiving assemblies are connected with the gas storage part and the connecting sleeve correspondingly, the two receiving assemblies are arranged on the two sides of the explosion-proof body and connected with the gas storage part and the connecting sleeve correspondingly, and the two receiving assemblies receive shock waves on the two sides of the explosion-proof device correspondingly. Therefore, the explosion-proof device can be triggered and started in two directions by shock waves on the two sides of the explosion-proof device.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof devices, in particular to a two-way opening type automatic explosion-proof device for underground coal mines. Background Art

[0002] In coal mines, explosion-proof devices are key equipment used to prevent flame propagation when explosions occur in coal mines. When an explosion occurs in a coal mine, the flame will spread rapidly and cause greater damage. The function of the explosion-proof device is to automatically start after the explosion, isolate the flame, and prevent it from continuing to spread, thereby reducing the losses and hazards caused by the explosion. At present, ball-type locking mechanisms are mostly used for locking. After the receiving device receives the shock wave, it triggers the locking mechanism to cause the high-pressure gas in the high-pressure gas cavity to spray out, thereby spraying out the fire extinguishing powder or fire extinguishing liquid in the fire extinguishing powder cover, blocking the spread of flames and achieving automatic explosion-proof.

[0003] The existing explosion-proof device is usually composed of an impact receiving plate, a sliding rod, a hanging component and an explosion-proof body. The receiving plate is pushed by the shock wave generated by the explosion to drive the sliding rod to move, triggering the explosion-proof body to achieve automatic explosion-proofing. For example, Chinese patent announcement No. CN214616636U discloses "an automatic explosion-proof device for underground coal mines", wherein multiple groups of sliding rods are connected by multiple groups of nuts, and different numbers of sliding rods can be selected and installed according to the actual situation of the port, and multiple groups of left hanging components and right hanging components are installed on the top plate of the tunnel through anchor rods, so it does not need to make a fixed bracket, and different numbers of sliding rods and connecting rods can be installed according to the situation, which is convenient to use and improves economy. Moreover, it uses fire extinguishing agent to extinguish fire, so it can be installed in some low, narrow, curved and irregular tunnels, with low limitations, which comprehensively improves practicality.

[0004] However, in actual use, since the specific location of the gas and coal dust explosion cannot be determined, the only way is to predict the location where the gas and coal dust explosion may occur and install the explosion-proof device facing the predicted location with the shock wave receiving device. The location of the gas and coal dust explosion is different, and the direction of the shock wave generated is also different. When the direction of the shock wave is different from the triggering direction of the receiving plate, the explosion-proof device cannot be triggered, and the explosion-proof device fails. The flame cannot be isolated in time, which is likely to cause greater losses. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art that when the direction of the shock wave generated is different from the triggering direction of the receiving plate, the explosion-proof device cannot be triggered, the explosion-proof device fails, the flame cannot be isolated in time, and greater losses are easily caused. A two-way opening type automatic explosion-proof device for underground coal mines is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A two-way openable underground coal mine automatic explosion-proof device is designed, comprising an explosion-proof body with fire extinguishing powder inside, a mounting frame, and a receiving assembly, wherein the receiving assembly is arranged on both sides of the explosion-proof body, the receiving assembly comprises a slide bar and a receiving plate, an adjustment frame is arranged on the slide bar, and the receiving plate is arranged on one side of the adjustment frame and fixedly connected to the receiving plate;

[0008] An air storage component is arranged in the explosion-proof main body, and a connecting sleeve is arranged on the outer wall of the air storage component, and a sealing ring matching with the connecting sleeve is arranged on the outer wall of the air storage component. Both the air storage component and the connecting sleeve are provided with air guide hole groups, and the two air guide hole groups are separated by the sealing ring and are not connected to each other. The two receiving components are respectively connected to the air storage component and the connecting sleeve.

[0009] Furthermore, a protruding ring is fixedly provided on one side of the connecting sleeve, and a limiting ring matched with the protruding ring is fixedly provided on the inner wall of the explosion-proof body.

[0010] Furthermore, a spring is provided on one side of the raised ring, and the other end of the spring abuts against the inner wall of the flameproof body.

[0011] Furthermore, a through hole is provided in the sliding rod connected to the air storage component, an air supply pipe connected to the through hole is provided below the sliding rod, and a non-return structure is provided in the air supply pipe.

[0012] Furthermore, the anti-return structure includes an air intake channel, and a cover plate is provided at the upper end of the air intake channel.

[0013] Furthermore, the cover plate includes an elastic member, a sealing gasket is fixedly provided at the lower end of the elastic member, and the lower end of the sealing gasket abuts against the air inlet passage.

[0014] The two-way opening type automatic explosion-proof device for underground coal mines proposed by the utility model has the following beneficial effects:

[0015] In the utility model, two receiving assemblies are arranged on both sides of the explosion-proof body, and the two receiving assemblies are respectively connected to the gas storage component and the connecting sleeve, and the two receiving assemblies respectively receive the shock waves on both sides of the explosion-proof device, so that the explosion-proof device can be bidirectionally triggered and started by the shock waves on both sides of the explosion-proof device;

[0016] Secondly, in the present invention, by providing a gas supply pipe, the high-pressure gas in the gas storage component can be regularly supplemented to prevent leakage of the high-pressure gas in the gas storage component after long-term storage, thereby avoiding failure of the explosion-proof device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the two-way opening type underground coal mine automatic explosion-proof device proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the connecting sleeve of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of zone A of the utility model;

[0020] Figure 4 It is a schematic diagram of the enlarged structure of area B of the utility model.

[0021] In the figure: 1. explosion-proof body; 2. mounting frame; 3. receiving assembly; 31. sliding rod; 32. receiving plate; 4. adjusting frame; 5. gas storage part; 51. sealing ring; 52. air guide hole group; 6. connecting sleeve; 61. raised ring; 62. limiting ring; 63. spring; 7. through hole; 8. air supply pipe; 9. anti-return structure; 91. air inlet channel; 92. cover plate; 921. elastic part; 922. sealing gasket. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-4 The two-way opening type automatic explosion-proof device for underground coal mines comprises an explosion-proof body 1 with fire extinguishing powder inside, a mounting frame 2, and a receiving assembly 3. The receiving assembly 3 is arranged on both sides of the explosion-proof body 1. The receiving assembly 3 comprises a slide bar 31 and a receiving plate 32. An adjusting frame 4 is arranged on the slide bar 31. The receiving plate 32 is arranged on one side of the adjusting frame 4 and is fixedly connected to the receiving plate 32.

[0024] An air storage component 5 is arranged in the explosion-proof main body 1, and a connecting sleeve 6 is sleeved on the outer wall of the air storage component 5. A sealing ring 51 matching with the connecting sleeve 6 is sleeved on the outer wall of the air storage component 5. Air guide hole groups 52 are arranged on the air storage component 5 and the connecting sleeve 6. The two air guide hole groups 52 are separated by the sealing ring 51 and are not connected to each other. The two receiving components 3 are respectively connected to the air storage component 5 and the connecting sleeve 6.

[0025] In the utility model, two receiving components 3 are arranged on both sides of the explosion-proof body 1, and the two receiving components 3 are respectively connected to the air storage component 5 and the connecting sleeve 6, and the two receiving components 3 respectively receive the shock waves on both sides of the explosion-proof device, so that the explosion-proof device can be bidirectionally triggered and started by the shock waves on both sides of the explosion-proof device.

[0026] Furthermore, in the present embodiment, a protruding ring 61 is fixedly provided on one side of the connecting sleeve 6, and a limiting ring 62 matching with the protruding ring 61 is fixedly provided on the inner wall of the explosion-proof main body 1. The limiting ring 62 and the protruding ring 61 are provided to limit the position of the connecting sleeve 6 to prevent it from moving along with the gas storage component 5 when the gas storage component 5 moves, thereby causing the two gas guide hole groups 52 to be always disconnected from each other, and the high-pressure gas cannot flow along the two gas guide hole groups 52 to spray out the fire extinguishing powder for fire extinguishing.

[0027] Furthermore, in the present embodiment, a spring 63 is provided on one side of the raised ring 61, and the other end of the spring 63 abuts against the inner wall of the explosion-proof body 1. The spring 63 is provided to limit the position of the raised ring 61 to prevent it from moving during transportation or installation, thereby causing the two air guide hole groups 52 to be connected to each other, and the fire extinguishing powder is sprayed out when high-pressure gas is injected.

[0028] It should be noted that, in the present embodiment, a through hole 7 is provided in the slide rod 31 connected to the gas storage component 5, and an air supply pipe 8 connected to the through hole 7 is provided below the slide rod 31, and a non-return structure 9 is provided in the air supply pipe 8. By providing the air supply pipe 8, it is convenient to replenish the high-pressure gas in the gas storage component 5, thereby avoiding leakage of the high-pressure gas in the gas storage component after long-term storage, so as to prevent the explosion-proof device from failing.

[0029] Furthermore, in this embodiment, the non-return structure 9 includes an air inlet channel 91 , and a cover plate 92 is provided at the upper end of the air inlet channel 91 . The non-return structure 9 is provided to prevent the high-pressure gas in the air storage component 5 from leaking along the air supply pipe 8 .

[0030] In more detail, in the present embodiment, the cover plate 92 includes an elastic member 921, one end of the elastic member 921 is fixedly connected to the air inlet passage 91, a sealing gasket 922 is fixedly provided at the lower end of the elastic member 921, and the lower end of the sealing gasket 922 abuts against the air inlet passage 91. The elastic member 921 applies force to the sealing gasket 922 so that it abuts against the air inlet passage 91 when no inflation is performed, thereby preventing leakage of high-pressure gas.

[0031] Working mode: When working, by arranging two receiving components 3 on both sides of the explosion-proof main body 1, and the two receiving components 3 are respectively connected to the gas storage component 5 and the connecting sleeve 6, the two receiving plates 32 respectively receive the shock waves on both sides of the explosion-proof device, and respectively drive the two sliding rods 31 to move, thereby driving the gas storage component 5 or the connecting sleeve 6 to move, and the two air guide hole groups 52 are connected to each other, and the high-pressure gas flows along the two air guide hole groups 52 to spray the fire extinguishing powder for fire extinguishing.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A two-way opening type automatic explosion-proof device for underground coal mines, comprising an explosion-proof body (1) with fire extinguishing powder inside, a mounting frame (2), and a receiving assembly (3), characterized in that: The receiving assembly (3) is arranged on both sides of the flameproof body (1), and the receiving assembly (3) comprises a slide bar (31) and a receiving plate (32), an adjustment frame (4) is arranged on the slide bar (31), and the receiving plate (32) is arranged on one side of the adjustment frame (4) and is fixedly connected to the receiving plate (32); The flameproof body (1) is provided with a gas storage component (5), the outer wall of the gas storage component (5) is provided with a connecting sleeve (6), the outer wall of the gas storage component (5) is provided with a sealing ring (51) matched with the connecting sleeve (6), the gas storage component (5) and the connecting sleeve (6) are both provided with gas guide hole groups (52), the two gas guide hole groups (52) are separated by the sealing ring (51) and are not connected to each other, and the two receiving components (3) are respectively connected to the gas storage component (5) and the connecting sleeve (6).

2. The two-way openable underground coal mine automatic explosion-proof device according to claim 1 is characterized in that: A protruding ring (61) is fixedly provided on one side of the connecting sleeve (6), and a limiting ring (62) matching with the protruding ring (61) is fixedly provided on the inner wall of the flameproof body (1).

3. The two-way open type automatic explosion-proof device for underground coal mines according to claim 2 is characterized in that: A spring (63) is provided on one side of the raised ring (61), and the other end of the spring (63) is in contact with the inner wall of the flameproof body (1).

4. The two-way openable underground coal mine automatic explosion-proof device according to claim 1 is characterized in that: A through hole (7) is provided in a slide bar (31) connected to the air storage member (5); an air supply pipe (8) connected to the through hole (7) is provided below the slide bar (31); and a non-return structure (9) is provided in the air supply pipe (8).

5. The two-way openable underground coal mine automatic explosion-proof device according to claim 4 is characterized in that: The non-return structure (9) comprises an air intake channel (91), and a cover plate (92) is provided at the upper end of the air intake channel (91).

6. The two-way open type automatic explosion-proof device for underground coal mines according to claim 5 is characterized in that: The cover plate (92) comprises an elastic member (921), a sealing gasket (922) is fixedly provided at the lower end of the elastic member (921), and the lower end of the sealing gasket (922) abuts against the air inlet channel (91).

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