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Automatic explosion-proof device for underground coal mine

An automatic and explosion-proof technology, used in mining devices, safety devices, mining equipment, etc., can solve the problems of difficult processing, complex structure, harmful secondary explosion, etc., to achieve low processing difficulty, high action sensitivity, and easy operation. Effect

Inactive Publication Date: 2020-10-16
山东久泰煤安装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the aforementioned deficiencies of the prior art coal mine explosion-proof equipment that needs to be replaced and cannot be powered off, and has a complex structure and difficult processing, this application adopts an automatic flame-proof device with a mechanical structure, less processing difficulty, and more sensitive actions. When a gas and coal dust explosion occurs underground, quickly extinguish the explosion flame to prevent the flame from spreading and causing a more harmful secondary explosion

Method used

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  • Automatic explosion-proof device for underground coal mine
  • Automatic explosion-proof device for underground coal mine
  • Automatic explosion-proof device for underground coal mine

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Experimental program
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Effect test

Embodiment 1

[0027] An automatic explosion-proof device for underground coal mines, including a pressure receiving mechanism, a trigger mechanism, and a reaction mechanism connected in sequence. The trigger mechanism includes a pressure chamber 1, and the pressure chamber 1 is provided with an axial sleeve 2, and the middle position of the axial sleeve 2 is Vent holes 3 are uniformly arranged around the circumference of the cross-section of the pipe wall; the length of the axial sleeve 2 is greater than the length of the pressure chamber 1, and the axial sleeve 2 beyond the pressure chamber 1 is radially provided with a positioning lock pin 4, and the axial sleeve The tail end of the tube 2 is radially provided with a safety lock 5; the axial sleeve 2 is provided with a trigger piston 6, the trigger piston 6 is a cylindrical structure provided with an axial cavity, and the outer circumference of the front end of the trigger piston 6 is provided with five sealing grooves 7. There is a Y-shap...

Embodiment 2

[0029]An automatic explosion-proof device for coal mines, including a pressure receiving mechanism, a trigger mechanism and a reaction mechanism connected in sequence. The trigger mechanism includes a pressure chamber, and an axial casing is arranged in the pressure chamber. The middle position of the axial casing surrounds the pipe wall and traverses Vent holes are evenly arranged on the surface circumference; the length of the axial sleeve is greater than the length of the pressure chamber, the axial sleeve beyond the pressure chamber is radially provided with a positioning lock pin, and the radial end of the axial sleeve is provided with a safety lock; There is a trigger piston inside the shaft sleeve. The trigger piston is a cylindrical structure with a shaft cavity. There are seven sealing grooves on the outer circumference of the front end of the trigger piston. There are Y-shaped sealing rings in the sealing grooves. Counting from right to left There is an air release gr...

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Abstract

The invention relates to the technical field of protective equipment for an underground coal mine, in particular to an automatic explosion-proof device for the underground coal mine. The automatic explosion-proof device for the underground coal mine comprises a pressure receiving mechanism, a triggering mechanism and a reaction mechanism which are connected in sequence, wherein the triggering mechanism comprises a pressure chamber; an axle center casing pipe is arranged in the pressure chamber; air leakage holes are uniformly formed in the middle position of the axle center casing pipe aroundthe circumference of the cross section of the pipe wall; a triggering piston is arranged in the axle center casing pipe, and is of a cylindrical structure with an axle center cavity; no less than twosealing grooves are formed in the outer circumference of the front end of the triggering piston; an air leakage groove is formed between the adjacent sealing grooves; and an air delivery hole is formed in the bottom of the air leakage groove and is connected to the axle center cavity of the triggering piston. When gas and coal-dust explosion occurs in the underground coal mine, the explosion flameis quickly extinguished to prevent the flame from continuing to spread and trigger more harmful secondary explosion by adopting the automatic explosion-proof device which has the mechanical structure, little processing difficulty and relatively sensitive action.

Description

technical field [0001] The invention relates to the technical field of underground safety protection equipment for coal mines, in particular to an automatic explosion-proof device for underground coal mines. Background technique [0002] Existing underground coal dust and gas explosion fire extinguishing devices in coal mines are diverse, but the trigger mechanisms are mostly complex structures, and the high-pressure gas injection is not smooth, which cannot achieve instant effective fire extinguishing. Some underground explosion-proof equipment in coal mines need to replace the battery and cannot operate when the power is off, and the complex structure is difficult to process. Some two-way explosion-proof devices have high requirements on the thrust of high-pressure gas, and the two parts of the gas injection holes must overlap to trigger the action of the explosion-proof device, so the reliability of its use is poor and the difficulty is high. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F5/00E21F17/103E21F17/00A62C35/02
CPCA62C35/023E21F5/00E21F17/00E21F17/103
Inventor 郭现忠杨辉旺刘彬巩长奎徐新川
Owner 山东久泰煤安装备有限公司
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