我矿采用的主通风机为4-72-20B型离心式抽风机,主轴转速500 r/min,风量1.41×105m3/h,全压为138Pa,通风机配套电机功率为75kW。矿井通风采用一台主通风机运行,另一台备用。我矿对主通风机的垂直闸门和大气风门进行了节能改造,使其漏风率降为零,极大地提高了矿井通风效率,节约了 The main ventilator used by mine is 4-72-20B Centrifugal Exhaust Fan, the spindle speed is 500 r / min, the air volume is 1.41 × 105m3 / h, the total pressure is 138Pa and the fan motor power is 75kW. Mine ventilation using a main fan operation, the other spare. I mine on the main fan of the vertical gate and the atmospheric damper energy-saving transformation, the air leakage rate reduced to zero, which greatly improved mine ventilation efficiency, saving