Vibratory grain cleaners are compact high-tech machines in which it is possible to pre-clean the grain, accurately clean and sort. Grains are sorted in sieves in geometric shapes, and subsequently pass through an aspirator where the aerodynamic sorting takes place.
In the pre-cleaning mode, the screens are stacked on top of each other: on top is a large sieve, the bottom is shallow. Through the upper sieve, the grain wakes to the bottom, a large admixture remains on top of the first sieve (straw, lumps, pieces of soil, stones, etc.). On the lower screen there is a sifting of small impurities (sand, broken grains, ….). The pure grain remains on top of the sieve and is retracted along the inclined plane to the side.