Fast closing venting door of coal mine fire area

Abstract

A fast closing venting door of a coal mine fire area comprises a door frame and a door leaf installed on the door frame. The door leaf can be opened or closed relative to the door frame. At least one venting window is arranged on the door leaf. The area of the venting window is smaller than that of the door leaf. The top of the venting window is pivoted to the door leaf through a rotary shaft. When the door is impacted, the venting window rotates around the rotary shaft and is opened for explosion venting and the venting window is closed automatically after explosion venting is finished. According to the fast closing venting door, the venting window is arranged on the door leaf, when explosion occurs in the closed fire area, the venting window is rapidly and automatically opened through impact waves, the pressure of the impact waves and combustion waves are relieved instantly, after the impact pressure is released, the venting window can be automatically and rapidly closed under the action of gravity, the fire area can be sealed automatically even if an operator is not on the spot, and the personnel safety is guaranteed. The fast closing venting door is simple in structure, the impact resistance of the door leaf is high, the explosion impact waves can be effectively relieved, the fire area can be sealed safely and rapidly, and reliable guarantee is provided for underground personnel and equipment.

Description

technical field [0001] The invention relates to the technical field of coal mine safety, in particular to a fast-closing explosion venting door in a coal mine fire area. Background technique [0002] When an underground coal mine fire accident occurs, if the fire cannot be extinguished directly, the fire area is closed, and gas explosion accidents often occur during the closed process. The existing sealing technology is mainly to build airtight walls. If the sealing time is too long, it is very easy to cause gas explosion accidents. The risk of masonry airtight work is high. The strength is low, and it does not have the function of blocking the explosion shock wave and flame wave. Once a gas explosion accident occurs, it is easily damaged by the explosion shock wave, and after damage and damage, it needs to be manually rebuilt and sealed, and secondary explosions often occur, or even continuous explosions , easily causing a large number of casualties. [0003] Therefore, i...

AI Technical Summary

Problems solved by technology

The existing sealing technology is mainly to build airtight walls. If the sealing time is too long, it is very easy to cause gas explosion accidents. The risk of masonry airtight work is high. The strength is low, and it does not have the function of blocking the explosion shock wave and flame wave. Once a gas explosion accident occurs, it is easily damaged by the explosion shock wave, and after damage and damage, it needs to be manually rebuilt and sealed, and secondary explosions often occur, or even continuous explosions , could easily cause a large number of casualties

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