Mechanism sand spiral air classification system

The utility model relates to a can be enough according to the pure degree of the required machine -processed sand of wind pressure size selection by winnowing, the mechanism sand spiral air classification system that can utilize the complete entrapment of micronic dust in the machine -processed sand again, including dust collector and rectilinear vibrating screen, the rectilinear vibrating screen discharge gate is located the screw conveyer feed inlet, is equipped with the suction hood on the screw conveyer feed inlet, and the suction hood lower part is equipped with the air -blower, and the suction hood upper end is through defeated dirt pipe and dust collector dust absorption pipe intercommunication. The advantage: both realized the selection by winnowing to the pure degree on machine -processed sand surface, the complete entrapment utilization of micronic dust that can produce machine -processed sand again make the comprehensive added value of machine -processed sand improve greatly. 本实用新型涉及种既能够根据风压大小风选所需机