Spiral air sifter having air regulation

Details Spiral air sifter having air regulation Spiral air sifter having air regulation

1987-06-19

1988-12-20

Reeves, Robert B.

Classifying, separating, and assorting solids

Fluid suspension

Gaseous

209148, 209154, B07B 404, B07B 1102

Patent

active

047923938

ABSTRACT:
The invention relates to a sifter in which the spiral for delivery of the air for sifting is divided into a plurality of channels lying one above another in which elements for setting the quantity of sifting air delivered to the individual channels are provided. In such a sifter the quantity of sifting air in the individual regions of the sifting chamber can be optimally adapted to the requirements, which leads to a substantial improvement in the degree of separation.

REFERENCES:
patent: 2913109 (1959-11-01), Williams
patent: 3015392 (1962-01-01), Rozsa et al.
patent: 3503502 (1970-03-01), Donelson, Jr.
patent: 4236997 (1980-12-01), Wessel et al.
patent: 4296864 (1981-10-01), Misaka et al.
patent: 4551241 (1985-11-01), Saverse et al.
patent: 4661244 (1987-04-01), Hanke et al.

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