Classifying – separating – and assorting solids – Stratifiers – With pneumatic treatment
Patent
1987-09-01
1989-09-12
Reeves, Robert B.
Classifying, separating, and assorting solids
Stratifiers
With pneumatic treatment
209486, 209492, 209493, 209498, 209502, B07B 408, B07B 1100
Patent
active
048657220
ABSTRACT:
A separator suitable for processing agriculture products in a fluidized bed flowing through an inclined trough under the influence of gravity. The fluidization medium is recirculated from the output end of the trough back to the input end thereof using a recirculation drum horizontally disposed laterally encircling the output end of the trough and supported for rotation about its own longitudinal axis. The inner surface of the drum includes an endless series of receiving pockets for collecting sand below the output end of the trough and lifting it thereabove. A damper at the output end of the trough is used to accelerate the establishment of the fluidized bed therein by temporarily obstructing the flow of fluidized bed. An ultrasonic sensor is used to determine the depth of the trough and based thereon to control the rate at which fluidization medium is provided thereto. Pretreatment of air forced through the fluidization medium to create the fluidized bed occurs through the use of an air intake stack extending a substantial distance above the separator, an air filter for removing from ambient air particles exceeding a predetermined size, and an air heater for raising the temperature of the air adequately to permit it to remove moisture from the fluidized bed.
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Zaltman, Feller, Mizrach and Schmilovitch, "Separating Potatoes from Clods and Stones in a Fluidized Bed Medium", Transactions of the ASAE, vol. 26, No. 4, pp. 987-990 & 995 (1983).
Clarke, "Celaning Seeds by Fluidization", J. Agric. Engng. Res. 31, pp. 231-242 (1985).
Albert Devon
Johnson Lynn F.
Ririe Max
Reeves Robert B.
Wacyra Edward M.
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