When the diameter of vortex finder decreases, the downward flow decreases and the tangential velocities of the whole cyclone separator increase, but the pressure drop increases at the same time.

• 减小排气管直径可以抑制短路流量，使旋风分离器整个空间内的切向速度增大，有利于颗粒分离，但同时压降增大。