This machine is mainly use in the grain deposited, flour and cattle feed product, medication, lipin, food, brewage separating material and low consistency something(wheat, barley, paddy, oil plants and corn, etc.)This machine uses the seal circulation wind the form, itself has removes dust and reduces the dust the function, like this has saved other dust removal equipment, and not with outside exchange of gases, therefore has avoided the thermal loss, does not pollute the environment.