DEVICE FOR SEPARATION OF GRAIN AND SEEDS BY LENGTH Russian patent published in 2009 - IPC B07B13/02 A01F12/44 

FIELD: agriculture.

SUBSTANCE: device consists of at least three grain-cleaning modules installed successively one after another with a possibility of increasing their number each having an independent drive, grain-cleaning machine, pick-and-place device, frame composed of four vertical posts connected below by crossbeams one of which is removable and a receiving diverter for factions. The first grain-cleaning module also has a loading device and the last one has a shipping device. The size of cells of each following grain-cleaning machine in relation to the previous one decreases at an equal value starting from the first one to the last one and their horizontal axes are away from each other by height at an equal value: Nt.> Lt. tg γ, where γ is a natural angle of slope, Lt. is a distance between grain-cleaning modules. The support parts of each post except for the last grain-cleaning module, which is secured firmly on its stand, have rollers and holders for firm mounting of the post in a new position and increasing the number of grain-cleaning modules at the same time. The tanker of the loading device can move horizontally for which purpose it has rolling-contact bearings and holders. The vertical posts of the module frames are telescopic capable of changing height due to the fact that the ends of their posts are made as round rods with teeth on the side facing the frame centre to couple with the worm gear teeth and installed on hinges on top of the telescopic part of the two vertical post opposite diagonally. All grain-cleaning modules are installed so that their rotation speed can be changed.

EFFECT: improved quality of cleaning due to a prompt setup of the device by installing an additional grain-cleaning module.

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