Grain Seed Cleaning Machine

A seed cleaner uses a combination of winnowing with a fan to remove lighter particles (e.g. empty grains) and sifting with sieves on an oscillating screen to remove particles that are smaller (e.g. weed seeds) and larger particles (e.g. straw).Cleaner-separators are motor-driven and consist mainly of a reception hopper, a fan and set of vibrating sieves; they clean grain by repeated suction of the lightest impurities, followed by siftings of the grain.