System for separating particles in a rotary separator

Details System for separating particles in a rotary separator System for separating particles in a rotary separator

1991-09-24

1992-11-17

Hajec, Donald T.

Electricity: circuit makers and breakers

Capacitive switch

209707, B07B 1302

Patent

active

051635658

ABSTRACT:
A rotary drum separator is provided having a plurality of elongated pockets that extend in the direction of pocket movement, wherein more than one kind of particle in a bulk mixture in the drum longitudinally may lodge in the pockets; wherein each of the pockets includes a generally flat upstream surface so that a particle longitudinally lodged therein partly rests or stands upon the generally flat surface when elevated above the bulk mixture. Diverse particles having about the same width and depth, but a different length, are able to be lifted by the pockets, but the longer ones are lifted higher above the bulk mixture. If the shorter particles also have a different shape than the longer ones so that the shorter ones are lodged less stably in the pockets than the longer ones, this difference will contribute to an earlier departure of the shorter particles from the pockets. In an alternative embodiment, the diverse particles have about the same size, shape, and mass, but one of the particles has a higher center of mass than the other with respect to ledge support. In this embodiment, the particles having a higher center of mass are lifted higher above the bulk mixture than the ones with a lower center of mass.

REFERENCES:
patent: 854443 (1907-05-01), Voorhees
patent: 1437042 (1922-11-01), Carter
patent: 1932777 (1933-10-01), Germer
patent: 2478246 (1949-08-01), Cortese et al.
patent: 2672235 (1954-03-01), Freeman
Hart uni-flow Grain Separator sales brochure, date Feb. 1942.

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