Powder classifier

Details Powder classifier Powder classifier

1984-05-10

1986-08-05

Bashore, S. Leon

Classifying, separating, and assorting solids

Fluid suspension

Gaseous

209145, B07B 7083

Patent

active

046041923

ABSTRACT:
In a powder classifier of the kind having a turbine-like horizontally rotating classifying rotor which is arranged to have air diametrically flow into radial passages and to cause the coarse powder portion of a powder material supplied to the inside of the radial passages to move to a circular passage encompassing the outer circumference of the rotor and the fine powder portion of the powder material to move diametrically toward the inside of the rotor, the circular passage has a discharge port formed in a part of the outer circumferential wall thereof. To the discharge port is connected a coarse powder discharge duct which approximately tangentially extends from the discharge port of the circular passage to a chute part arranged above a coarse powder recovering device; a powder return duct is connected to the chute part and extends approximately tangentially relative to the circular passage from the chute part to an opening provided in the outer circumferential wall of the circular passage. In cases where highly adhesive ultrafine powders are treated, at least either of the coarse powder discharge duct and the powder return duct is arranged to have an air stream blown thereinto in the passing direction of the powder.

REFERENCES:
patent: 1785918 (1930-12-01), Stebbins
patent: 1973607 (1934-09-01), Bunn
patent: 2367906 (1945-01-01), Wall et al.
patent: 2593294 (1952-04-01), Goldberg
patent: 2779536 (1957-01-01), Pomeroy
patent: 2943735 (1960-07-01), Payne et al.
patent: 3048271 (1962-08-01), Sharples
patent: 3334741 (1967-08-01), Hoffstrom

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