The diffuser of mines main ventilator is a device to reduce kineticpressure at outlet, raise static pressure of ventilator and recover kinetic energy at outlet.
矿井主扇扩散器是用来降低出口动压以提高风机静压而回收风机出口动能的装置。
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In the wet, when a vehicle running in high speed on the highway covered by a layer of water, the kineticpressure in the layer of water should be make the vehicle up and lose control of the vehicle.
Moreover this gradual contraction inlet may translate some pressure energy of liquid into kinetic energy and increase circumrotate speed. These play active actions on improving separation efficiency.