ZZGB25 active flameproof device for coal mines

Article 186 of the Coal Mine Safety Regulations: “Mines with coal seams with coal dust explosion danger must have measures to prevent and isolate coal dust explosions. ……” At present, the underground roadway mainly uses mechanical explosion-proof devices, explosion-proof water tanks, explosion-proof water bags, rock powder sheds, etc. for explosion-proof protection, all of which belong to passive explosion-proof facilities. The active explosion-proof device for coal mine is a device that relies on the advanced detection of explosion information after the explosion occurs, and sprays flame-suppressing agent through the explosion-proof device to form an explosion-proof barrier and prevent the spread of explosion. This device adopts active detection of flame and shock wave pressure signals, and automatically sprays ultra-fine dry powder fire extinguishing agent, which can realize “active” suppression of flame combustion, isolate the spread of gas explosion, and effectively realize coal mine safety. The device is to transform the traditional passive explosion isolation into active explosion isolation and suppression, with high technical content, and has successfully suppressed several gas explosion accidents in South African coal mines, and has been designated by the South African Ministry of Mine Energy as the equipment that must be installed in all coal mines in South Africa.