METHOD OF SEPARATION OF A GRAIN MIXTURE Russian patent published in 2004 - IPC

FIELD: agriculture; separation of a grain mixture. SUBSTANCE: the invention is pertinent to agriculture, in particular to methods of clearing of grain mixtures from the admixtures different at length. The method provides delivery of a grain mixture for separation to the sieve in one layer. The sieve is applied with an inhomogeneous electrostatic field with electric field strength level in the beginning of the sieve of 5.0-7.0 kV/cm and at the end of the sieve of 7.5-12.0 kV/cm. Under the sieve there is a homogeneous electrostatic field with electric field strength up to 15 kV/cm. Vibration of the sieve are exercised in a horizontal plane with frequency of 350-600 vibrations per minute with an amplitude of 0.7-1.4 cm. The sieve is imposed to impacts from above on its center, or on its butt with frequency of 350-600 impacts per minute with an amplitude of 0.3-1.0 cm. EFFECT: the invention allows to improve the quality of a grain mixture particles separation and avoid the sieve sells clogging by corpuscles of admixtures.