This device separates large wastes such as stone, soil, spikelets, etc. through a circular mesh.

After that, the air intake system removes a large part of dust, straw, bran, hollow grains, stems, roots and others.

The input load rate and the flow rate of the suction channel are the controllers that are provided to the user. In addition, the device has two separate outputs for circular mesh wastes and air intake channel wastes.