Classifying – separating – and assorting solids – Fluid suspension – Gaseous
Patent
1977-09-22
1979-07-03
Hill, Ralph J.
Classifying, separating, and assorting solids
Fluid suspension
Gaseous
209 1, 209589, 209933, B07B 708, B07B 1104
Patent
active
041599420
ABSTRACT:
The method for separating particles having mixed density and/or size, comprises dispersing the particles in a fluid stream, passing the fluid stream into a housing which causes the fluid stream to be diverted from its original direction, and capturing certain of the particles within the housing which deflect the least amount in response to the directional diversion of the fluid stream. Apparatus for accomplishing this method include a channel in which the air flow undergoes a change in direction of 90.degree., one boundary being a right angle bend and the other being formed from a circular curve or rectangular hyperbola. Another device for accomplishing the method includes an inlet channel which enlarges in diameter and which includes capturing means placed along the longitudinal axis of the inlet channel, whereby the fluid must divert radially outwardly around the capturing means as it passes from the inlet channel through the enlarged portion thereof. A further modification of the device includes a channel having an elbow bend at an acute angle with respect to the longitudinal axis of the channel so that the fluid is diverted at an angle greater than 90.degree.. A further modification to the device includes means for moving the capturing device in response to fluid velocity change and/or chemical composition of the particles.
REFERENCES:
patent: 3472375 (1969-10-01), Mathews
patent: 3494217 (1970-02-01), Tanaka et al.
patent: 3591000 (1971-07-01), Humphreys
patent: 3731464 (1973-05-01), Brumbaugh et al.
patent: 3901798 (1975-08-01), Peterson
Akers Arthur
Greer Raymond T.
McConnell Kenneth G.
Hill Ralph J.
Iowa State University & Research Foundation, Inc.
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