Airflow sieving machine for rubber chemicals WSA series airflow sieving machine principle is feed the materials into a screw conveyor and a rotor rotating at high speed. the fine materials will pass through screen . and the oversize materials will be discarded at the end of the screw shaft. It is especially suitable for screening resin powder (PVC, epoxy), glass beads, quartz sand, light calcium carbonate, aluminium hydroxide and the like powder materials. Features: No oversize end bearings or seals Hinged oversize end door Easy to remove sifting screen and screen retainer Hygienic design sifting screen Easy to inspect and/or clean No tools required for screen, paddle and screw removal Fully rotatable screen for in-situ inspection Range of different screen options including; nylon, woven wire and wedge wire Benefits High efficiency Easy to clean Dust tight No vibration Quiet operation Operator friendly - The sifter can be stripped down for cleaning without the need for specialist maintenance assistance