Classifying – separating – and assorting solids – Fluid suspension – Gaseous
Patent
1987-11-05
1989-10-10
Shaver, Kevin P.
Classifying, separating, and assorting solids
Fluid suspension
Gaseous
209146, 209145, B07B 704
Patent
active
048729728
ABSTRACT:
An apparatus for classifying particles entrained by a solid-gas jet stream includes a feed nozzle, a cyclonic wall having an inner arcuate wall, and an auxiliary inner arcuate wall provided at an outlet port of the nozzle. The solid-gas stream is preliminarily bent along the auxiliary inner wall so that the particles are preliminarily or roughly classified into undersized and oversized particles by the action of the centrifugal force before they are classified by the cyclonic wall. The apparatus may include a collecting port disposed downstream of the nozzle outlet port and spaced slightly away from the inner arcuate wall of the cyclonic wall. The collecting port permits the apparatus to collect the undersized particles in a more effective manner.
REFERENCES:
patent: 2047568 (1936-07-01), Lissman
patent: 3311234 (1967-03-01), Rumpf et al.
patent: 3520407 (1970-07-01), Rumpf et al.
patent: 4153541 (1979-05-01), Rumpf et al.
patent: 4159942 (1979-07-01), Green et al.
patent: 4657667 (1987-04-01), Etkin
"Application of Fluidics Principle to Fine Particle Classification"--Symposium on Powder Technology.
Catalog entitled "Elbow-Jet".
Catalog entitled "Turbo Classifier".
Catalog entitled "Variable Impactor".
Paper entitled "Highspeed Impact Crushing and Jet Mill".
Paper entitled "Classification of Super Fine Particle".
World Congress Particle Technology, "Trials of Pneumatic Classification in the Neighborhood of Lum" and Size Classification of Industrial Sub-Micron Powder By a Virtual Impactor.
Murata Hiroyuki
Nishikawa Takao
Sugino Yasuo
Wakabayashi Minoru
Yamao Masanobu
Bollinger David H.
Kabushiki Kaisha Kobe Seiko Sho
Shaver Kevin P.
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