GRAIN GRADER Russian patent published in 2015 - IPC B07B13/02 B02B1/00 B07B1/00 

FIELD: agriculture.

SUBSTANCE: grain grader comprises a loading device, wild oat and cockle cellular cylinders, an outlet tray with walls of different heights, at the bottom of which as it enter into the cockle cellular cylinder a window, a screw, a drive are made. The cockle cellular cylinder is offset axially relative to the wild oat cellular cylinder. The radius R of the cockle cellular cylinder is greater than the radius r of the wild oat cellular cylinder. The walls of the outlet tray, placed in the wild oat and cockle cellular cylinders are proportional in height to their radii - h/H = r/R. The drive shafts of the cellular cylinders are connected by the chain loop with a transmission ratio equal to $$\sqrt{R/r}.$$

EFFECT: grain grader is characterised by simplicity of design, and provides quality improvement of the technological process.

2 dwg