SCREENING METHOD Russian patent published in 2009 - IPC B07B13/02 A01F12/44 

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture and can be applied in sorting and cleaning of seeds and grain. Essence of method lies in the following: screening is carried out in device for sorting seeds and grain by their length, which represents sorting sections. Each sorting section is equipped with drive, frame with vertical supports and grain cleaner with cells, cell size of grain cleaner of each following section being different from previous one on the same value in ascending order, from minimal to maximal. Vertical supports of each section are made telescopic, and their bases - with rolling-contact bearings and fastener. Device is equipped with loading bucket chain and transshipment transporters, whose body units are connected with telescope joints in the middle of their length. Parallel to each sorting section additional grain cleaners with cells of the same size as in main grain cleaner are installed. Each grain cleaner inside the section is installed in hinged way with possibility to regulate longitudinal axis inclination angle. During screening material to be sorted is first loaded into first section, where grain or seeds of definite size are separated, after which grain or seeds are supplied to the following section and so on to the last one.

EFFECT: invention allows to increase quality of cleaning and productivity, as well as mechanism maintainability.

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