THROWER OF BULK MATERIALS Russian patent published in 2015 - IPC B07B11/06 B65G31/04 

FIELD: agriculture.

SUBSTANCE: thrower of bulk materials comprises in a stationary housing-casing a blade drum mounted on a drive shaft, formed by an annular and bearing disc, and the blades located between them. The drum blades are made of two interconnected swivel device of the main fixed and additional movable blades, which in the longitudinal section have rectangular shape. The fixed blade with its front wall is located in the radial direction and with its inner end is secured to the rear wall at an angle, with its angle vertex located toward the centre on the circle on the receiving cylinder, and on the entire length of its lateral sides is fixed perpendicular to the annular and bearing discs. The terminal end of the radial wall of each main blade does not extend to the guide cylindrical surface of the drum, forming a gap H with it. The thrower also comprises a loading hopper, an outlet pipe and a frame. The blade drum is mounted vertically. Inside the horizontal drive shaft of the drum there is an internal shaft, on which a receiving screw and feeding radial blades are fixed, located inside the drum. In the upper part of the blade drum above its horizontal diameter the radius of its guide cylindrical surface increases by the amount ξ to the lower edge of the opening of the outlet pipe and by the amount δ at the area of the opening of the outlet pipe.

EFFECT: improvement of quality of sorting and cleaning grain, as well as accuracy of separation of the processed material to fractions of coarse and medium grain, increasing the efficiency of separation of a part of short and long impurities into the wastes for selection of good seeding material.

2 cl, 3 dwg