Feature Overview

The ZGJFH type automatic explosion-proof device for underground coal mines can protect against local disasters in coal mines. When an explosion shock occurs, the device automatically activates before detecting the flame front shock pressure change, blocking and extinguishing the flames, and mitigating or extinguishing the explosion shock. It has a shorter response time and higher explosion-proof efficiency than traditional water-filled explosion-proof bags, and is easy to disassemble and relocate, providing time efficiency for the security of rapid tunneling systems. Storage tubes of corresponding specifications can be selected based on the cross-sectional size of the usage area: 25kg to 90kg.

　　Key Technical Specifications:

Medium Quality: 90kg ± 0.5kg

Start-up Pressure: ≥0.020 Mpa

Spray-on activation response time: <15ms

Explosion-proof medium fogging time: <120ms

Explosion-proof medium fogging duration: >1000ms

Explosion-proof medium spray efficiency: >95%