Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Condition responsive means controls separating means
Patent
1979-06-04
1982-10-05
Knowles, Allen N.
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Condition responsive means controls separating means
209657, B07C 500
Patent
active
043524311
ABSTRACT:
A contaminant sorting device for sorting contaminant material, such as metal and rocks, from processing materials, such as wood chips, comprising a housing having internal walls formed of a surface of revolution into which housing is fed processing material at the upper portion thereof, an impeller disposed in the housing for receiving processing material and propelling it radially outwardly against the inner surfaces of the housing walls, a plurality of vibration sensing devices disposed around the walls of the housing for sensing vibrations due to impingement of the processing material on the walls, an electrical circuit for distinguishing between signals generated in response to impact of the processing material from response to impact of contaminant material, a series of trap doors each associated with a corresponding vibration sensing device and disposed downstream in the material flow path for diverting from the normal flow path a portion of processing material containing contaminant material.
REFERENCES:
patent: 3127016 (1964-03-01), Baigent
patent: 3394806 (1968-07-01), Vaillette
patent: 4147620 (1979-04-01), Artiano
Black Clawson Inc.
Knowles Allen N.
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