A self-duplex inclined shaft pressure relief and explosion-proof device and method for safe production in coal mines

Abstract

The invention discloses a coal mine safety production self-duplex inclined shaft pressure relief and explosion-proof device and method in the field of coal mine safety production. The device includes a pressure relief explosion-proof door, a door frame and an infrastructure that cooperates with the main body of the explosion-proof door, and is arranged on both sides of the opening direction of the explosion-proof door. The anti-wind lock and compression rod used for anti-wind locking, the energy buffer absorbing component used to absorb the residual impact energy of the explosion-proof door, and the counterweight component used to ensure that the explosion-proof door can be opened quickly when the negative pressure in the well disappears. This method realizes that in the production situation, the fan draws air outwards, there is negative pressure around the door body in the well, and the explosion-proof door is closed to ensure that the fan promotes the air circulation in the well; when an explosion occurs in the well, the explosion-proof door opens quickly to protect the fan and release pressure and explosion After the pressure relief and explosion relief are completed, the explosion-proof door is quickly closed to ensure the effective operation of the fan; when the wind is reversed, the fan blows inward, and there is positive pressure around the door in the well, so the door is strictly closed and sealed to ensure the effective work of the fan.

Description

technical field [0001] The invention belongs to the field of coal mine safety production, and particularly relates to a pressure relief and explosion-proof device and method for a self-complex inclined shaft in coal mine safety production. Background technique [0002] In the prior art, there are many molded coal mine air shaft pressure relief explosion-proof door products at home and abroad, mainly including door and window type and cover type. Some products or solutions under development can achieve self-reset, but most products require manual reset. [0003] When the covered explosion-proof door is in the normal state, the door body covers the pressure relief wellhead and ensures the sealing. When the well explodes, the covering door body is opened under the "pulling" of the heavy hammer to realize the pressure relief explosion-proof. However, in practical applications, such explosion-proof doors cannot be reset after being opened, or the door body cannot accurately retu...

AI Technical Summary

Problems solved by technology

[0007] (1) The explosion-proof door cannot be reset or is difficult to reset. Some schemes use the self-weight of the door or manually adjust the quality of the breeding and door body to reset. the risk of gas poisoning;

[0008] (2) It takes a long time to lock the explosion-proof door, and it takes a certain amount of time to use the electric push rod to withstand the explosion-proof door, and it is difficult to meet the requirements of the explosion-proof door for rapid wind deflection;

[0009] (3) In order to ensure the sealing of the explosion-proof doors currently used in some places, the explosion-proof door and the door frame are connected together with cement, so that the explosion-proof door cannot be opened due to the cement when an explosion occurs, endangering the safety of the ventilator, ventilation system and mine operators ;

[0010] (4) At present, the sealing liquid of explosion-proof doors is mostly sealed with water, and the water is easy to evaporate, and the water is easy to freeze. It is necessary to choose a suitable cooling liquid, which is inconvenient for maintenance;

[0011] (5) The explosion-proof doors used in some mining areas will not be reset correctly due to the deformation of the door body after the explosion, resulting in air leakage from the explosion-proof doors and even the complete failure of the explosion-proof doors

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