An automatic explosion isolation device for underground coal mine

The combination of guide sleeve, guide ball, corrugated telescopic hose and fixed cover solves the problem of transmission rod jamming caused by dust, ensuring the normal operation and timely explosion isolation function of the automatic explosion isolation device in the coal mine, and preventing the expansion of explosion accidents.

CN224742401UActive Publication Date: 2026-09-11SHANDONG SHANSHENG INTELLIGENT EQUIPMENT CO LTD
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Patent Information

Application Number
CN202522360309.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-06
Publication Date
2026-09-11
Estimated Expiration
2035-11-06

AI Technical Summary

Technical Problem

Existing automatic explosion-proof devices in underground coal mines are jammed due to dust intrusion into the gap between the transmission rod and the support, losing their explosion-proof function and failing to trigger properly, thus expanding the scope of the explosion accident.

Method used

The guide sleeve and guide ball structure support the transmission rod, combined with the corrugated telescopic hose and fixed cover to form a protective effect, reduce frictional resistance, prevent dust adhesion, and reduce air compression resistance through air guide holes and rubber diaphragms to ensure normal operation of the device.

Benefits of technology

It effectively prevents the transmission rod from jamming, ensures the long-term stable operation of the device, and promptly triggers the explosion-proof medium to suppress the explosion flame, avoids continuous explosions, and ensures safety.

✦ Generated by Eureka AI based on patent content.
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Abstract

This utility model discloses an automatic explosion-proof device for underground coal mines, including a transmission rod. A connecting rod is fixedly installed on the left side of the transmission rod, and receiving plates are fixedly installed at both ends of the left side of the connecting rod. Through the design of the guide sleeve, this utility model can form an effective support structure at both ends of the transmission rod, preventing the transmission rod from tilting or shifting due to force. Simultaneously, under the action of the guide balls, the transmission rod is supported internally by the guide sleeve, effectively reducing the frictional resistance between the transmission rod and the guide sleeve. Furthermore, through the design of the corrugated telescopic hose and the fixed cover, a good protective effect is formed between the guide sleeve and the transmission rod on both sides, effectively preventing a large amount of dust from adhering to the surface of the transmission rod around the guide sleeve. This prevents jamming between the transmission rod and the guide sleeve during subsequent triggering actions, ensuring the long-term stable operation of the entire system.
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