CENTRIFUGAL AIR SEPARATOR Russian patent published in 2018 - IPC B07B7/83 

FIELD: technological processes.

SUBSTANCE: invention relates to air cleaning devices for various grain materials and can be used to separate various bulk materials. Centrifugal air separator contains a cylindrical body with suction ports, loading neck, conical reflector with an annular aspiration channel, guide cone, located under the loading neck on the bottom of the spreader's bowl, flat accelerating vanes, spreader drive, auxiliary cone for collecting the separated grain with scrapers, discharge nozzle, connection pipe for light impurities, characterized in that the accelerating vanes of the spreader are made of at least two different lengths and are alternating relative to each other, blades ends of greater length go on the side of the spreader bowl and are bent in the opposite direction relative to the possible direction of spreader rotation, radius of bending of the blades ends is determined from the expression R₂≥1.5R₁, where R₁ is the radius of the long blades ends; R₂ is the radius of bending of the long blades ends. Edge of the spreader bowl is bent outward. Conical reflector is made in the form of a hollow truncated cone and is directed by a large base towards the spreader bowl. Conical reflector on the side of a large base has a reverse cone of smaller length forming surface.

EFFECT: higher efficiency of cleaning grain from light impurities.

4 cl, 3 dwg