The invention relates to an adjustable mine ventilator which comprises an air duct, a motor, a
turbine hub, fan blades, an adjusting module, a reinforcing module, a linkage module, a
drying module and a humidifying module. According to the mine fan, air is conveyed to the deep position of a mine by adopting a large-air-pressure and small-air-volume
ventilation mode under the condition that the
humidity is too high, the air is heated,
moisture in the air is evaporated and the
air humidity in the mine is reduced in cooperation with the heating net, and the structural strength of the fan blades is enhanced through the reinforcing rings and the stabilizing bolts under the condition that the large air pressure is high; bending and vibration during high-speed rotation are reduced, and the stability and operation efficiency of equipment are improved. Under the condition that the
humidity is too low, a small-air-pressure and large-air-volume
ventilation mode is adopted, the humidification module is matched, water mist is sprayed into the air, and the
air humidity in the mine is increased. The ventilation scheme is flexibly adjusted according to the internal
humidity and environment change of the mine, the requirements of different mines are met, and the
working environment of miners is improved.