Grain cleaning and grading machine application: remove large trash, stems, leaves, and associated chaff prior to basic cleaning. 


Working Principle:
1.  Grain flows into dedusting bin from silo by a bucket elevator;
2.  A fan sucks out the relatively light sundries like dust, stive, rice chaff and bran;
3.  Then grain flows onto a flat screen that is set at a slight incline and vibrated mechanically;
4.  Large trash is removed as the seed fall through the holes in the first screen and onto a second screen;
5.  The second screen traps the seeds and moves them to a hopper as smaller trash falls through the holes and discharged from another hopper.