A high-pressure gas injection structure of a coal mine underground explosion-proof device and a use method thereof

By adjusting the area design of the piston and piston rod, efficient high-pressure gas injection under different explosion impact forces was achieved in the explosion-proof device in coal mines. This solved the problem of explosion-proof failure or waste caused by inaccurate impact force in existing technologies, and ensured effective explosion-proof fire extinguishing effect.

CN117005905BActive Publication Date: 2026-06-12SHANDONG MINGXIN INTELLIGENT EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG MINGXIN INTELLIGENT EQUIP CO LTD
Filing Date
2023-08-03
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing explosion-proof devices in underground coal mines may fail to release high-pressure gas or release it excessively if the explosion impact force is inaccurate, leading to failure or waste of explosion-proof fire extinguishing.

⚗Method used

A high-pressure gas injection structure for an explosion-proof device in an underground coal mine was designed. By adjusting the area design of the piston and piston rod, the high-pressure gas is used to push the piston forward when the explosion impact force is greater than the pressure of the push rod, thereby achieving precise injection of high-pressure gas.

🎯Benefits of technology

It enables efficient use of high-pressure gas under different explosive impact forces, avoiding explosion-proof failure or waste caused by insufficient impact force or excessive release, and ensuring effective explosion-proof fire extinguishing effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to a kind of coal mine underground explosion-proof device high-pressure gas injection structure and its use method, the front end of first piston is fixed with third piston in gas tank, the end area of first piston, second piston, third piston increases in turn, the push plate in gas tank and receiving explosion impact is fixed with the top rod extending to high-pressure gas cylinder, first perforation is set in the rear wall of gas tank, and first perforation is sealed in sliding connection with fourth piston corresponding to the top rod and connected with corresponding top rod.The present application makes full use of high-pressure gas in high-pressure gas cylinder, when the impact of explosion is greater than the pressure of high-pressure gas to top rod after explosion occurs, push plate can be moved backward, therefore, by limiting the area of top rod and high-pressure gas contact, the force of high-pressure gas to push plate can be adjusted, so as to adapt to impact degree, avoid impact too low and cannot explosion-proof and extinguish fire, also avoid waste caused by too small impact.
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