AIR-SIEVE SEPARATOR Russian patent published in 2009 - IPC B07B9/00 

FIELD: agriculture.

SUBSTANCE: invention relates to agricultural machine-building, namely to machines for cleaning bulk of grains, leguminous plants, technical and oil-bearing crops seeds from admixtures. Air-sieve separator consists of air part, multilevel grid part and dividing valve of processed material flow for loading of grid part levels, installed in charging duct between said parts. Air part contains body, receiving chamber with mesh skalperator, air chamber with ventilator, pneumochannels and sedimentation section, skalperator and ventilator drives. Sieve part includes frame, connected with frame by means of flexible suspension brackets multilevel sieve boot, made in form of divided into levels framework with located in it block of sieve stacks, each of which consists of sieve, ball cassette and tray - chute, as well as debalancing mechanism of sieve boot drive. Stacks of each level are installed on guiding angles without clearance between them, and their sieves are located in one plane, inclined towards processed material movement. Separator is additionally equipped with second block of sieve stacks, installed in framework parallel to the first one on horizontal line with clearance between them, each level of both blocks is separated by means of vertical poles into sections for placement stacks in them and is additionally equipped with sieve stack, installed from the side of sieve part charging and consisting of sieve with chute, ball cassette and ramp sheet, located in one plane with sieves of said level without clearance with the first of them. In clearance between blocks installed are mechanisms for stacks placement and their fixation in immovable position in sections of sieve boot levels. Each of mechanisms consists of vertical control rod, made in form of axle with thread, loosely suspended with its upper end on horizontal arm of L-shaped bell-crank, hingedly fastened in upper part of framework, and horizontal control rod, connected with its one end with vertical arm of bell-crank, and with the other end fastened on framework with possibility of its longitudinal movement, causing vertical movement of axle. Axles of mechanisms at the level of all levels are equipped with rockers whose arms are located in transversal to material movement direction, and on their ends along arms guiding angles are hingedly fixed for placement stacks on them, resting with their loose ends on eccentric cams, fixed on framework poles from outer sides of blocks. In framework sections above each stack fixed are support surfaces for pressing to them from below stacks, installed on guiding angles of mechanisms. Dividing valve of processed material flow includes two rectangular trays, rigidly fastened on sieve boot frame at angle, reverse to the angle of sieve inclination and having oblique cut of their lower edges, gates installed in charging duct under trays and rigidly fixed with their lower edges on horizontal axles, installed on frame at distance from each other in transversal direction with possibility of their rotation in vertical plane and fixation of gates in positions ensuring division of flow into parts equal for all levels of both blocks, as well as ramp surfaces, installed between lower edges of gates and receiving edges of sieves of additional stacks of all levels in both blocks.

EFFECT: increase of quality of processed material cleaning and separator productivity, as well as increase of convenience of its servicing.

11 cl, 8 dwg, 1 ex