Overview of modern photo separators

Currently there is a problem of cleaning grain from hard-to-separate impurities (Tatar buckwheat, etc.), which differ slightly in size from the main grain in density and in speed of soaring. Therefore, it is practically difficult to clean grain material from hard-to-separate impurities on existing grain cleaning machines. However, recently new grain cleaning machines have appeared that, using high technology - technical vision; separate various impurities by color and particle shape from the particles of the main grain. The particles of Tatar buckwheat differ from the main grain of wheat in color and shape, since they have the shape of a tetrahedron. The article analyses existing grain-cleaning machines with technical vision - photoseparators, made in different countries and their technical characteristics It describes general principle of photoseparator operation, based on the operation of special chambers with the set of necessary parameters for cleaning grain from various impurities, special devices for blowing impurities into a separate compartment. The analysis of various photo separators has shown that they have high cost. It is necessary to develop a photoseparator for cleaning grain from hard-to-separate impurities. ESSUTM has developed a separator for grain purification using technical vision.