The shape of this sieve mesh is cylinder, built in machine body. The material is passed through the screw conveying system, mixed with the airflow and atomized into the net tube.; the wind turbine blade in the net tube make the material be subjected to the centrifugal force and ,the cyclone propelling force at the same time, spraying over the sieve ,discharge from the fine material outlet. Some material can't pass the sieve discharging from coarse material outlet.