Apparatus for separating a contaminated portion of bulk material

Details Apparatus for separating a contaminated portion of bulk material Apparatus for separating a contaminated portion of bulk material

1987-12-22

1989-09-05

Cherry, Johnny D.

Classifying, separating, and assorting solids

Sorting special items, and certain methods and apparatus for...

Condition responsive means controls separating means

193 31A, 198360, 209655, B07C 534, B07C 536, B65G 1120

Patent

active

048630403

ABSTRACT:
Contaminated portions of bulk material are removed from a flow of bulk material with the aid of a flow or drop pipe in a casing that is movable back and forth between a discharge position and a normal flow position. The flow or drop pipe is equipped with baffle plates or bends for sufficiently retarding the free flow of the flowable bulk material to enable a detector and control mechanism to respond to the presence of contaminations and to then move the casing for the discharge of a contaminated portion of bulk material. The movement of the casing of the flow pipe assures that a slide gate or a portion of the casing closes the upper inlet to prevent the further flow of bulk material when the casing is in a discharge position. Due to the retardation of the free flow of the bulk material, it is possible to construct the apparatus with a substantially shorter structural height than was possible heretofore.

REFERENCES:
patent: 760772 (1904-05-01), Anderson et al.
patent: 3283899 (1966-11-01), Vedvik et al.
patent: 3655039 (1972-04-01), Kind et al.
patent: 4171262 (1979-10-01), Lattmann et al.
patent: 4480753 (1984-11-01), Thomas et al.
patent: 4763792 (1988-08-01), Kind

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