FBDNO7.1 / 2 × 30 Mine explosion-proof push-rotating axial local fan Mine local fan, FBD push-rotating axial local fan, flameproof local fans, FBDNO7.1 / 2 × 30 local fan FBDNO7.1 / 2 * 30KW local fan ambient gas temperature of -20 ~ 40 ℃, the product through gas dust content shall not exceed 200mg/m3, should be installed in coal mine gas less than 1% concentration in the intake air flow. FBDNO7.1 / 2 * 30KW local fan is mainly used for gas or coal dust explosion hazard for local coal mine ventilation, also applies to metal mining, chemical mines, tunnels and other applications blower factories. Transmission medium temperature does not exceed 40 ℃, humidity less than 95 ±% 3 (25 ℃) and non-corrosive gas environment. dskrfffjrog FBDNO7.1 / 2 * 30KW local fan normal working conditions: a) an ambient temperature of -15 ℃ ~ +40 ℃; b) ambient air relative humidity less than 90% (+25 ℃ when); c) altitude does not exceed 1000m; d) no strong vibration and corrosive gases, etc.; e) installed in a methane gas explosion hazard in underground coal mine into the wind tunnel. Tai'an City Julong Mining Equipment Co., authoritative, good as gold.