METHOD AND DEVICE FOR SCOURING GRAIN Russian patent published in 1995 - IPC

FIELD: agriculture mechanical engineering. SUBSTANCE: compressing and shearing forces created by two rotating surfaces effect on the grain. The surfaces are arranged one inside the other and oscillate in two mutually perpendicular planes. The direction of oscillation of the inner surface is opposite to the direction of oscillation of the outer surface. The frequency of oscillation of the inner surface in the vertical plane is greater than in the horizontal plane. The oscillation frequency of the outer surface is differ from or equal to the oscillation frequency of the inner surface. The device has two conical concaves provided with vibration exciters. The exciters are constructed as planet gears which are actuated by single shaft and symmetrical with respect to its center. EFFECT: enhanced efficiency. 3 cl, 10 dwg