Classifying – separating – and assorting solids – Sifting – Drum sifters
Patent
1986-03-04
1990-04-10
Hajec, Donald T.
Classifying, separating, and assorting solids
Sifting
Drum sifters
209247, 209258, 209290, B07B 122
Patent
active
049158260
ABSTRACT:
A grain cleaner and method for cleaning grain is the subject of the present invention. A single rotatable drum presents a substantially continuous screen surface of increasing mesh size from one end to another with the drum having an inlet end and an outlet end. A plurality of baffles are disposed in spaced apart relationship along the periphery of and along the length of the screen surface of the drum for retarding the flow of material therethrough. Retaining means is provided in the vicinity of the outlet end of the drum for retarding the flow of foreign material fromthe drum while accommodating the eventual passage of foreign material out of the drum. The drum is rotated by any conventional power source.
REFERENCES:
patent: 694568 (1902-03-01), Mason, Jr.
patent: 1185770 (1916-06-01), Cody
patent: 1216891 (1917-02-01), Trefz
patent: 1822921 (1931-09-01), Cooper
patent: 1932777 (1933-10-01), Germer
patent: 2543898 (1951-03-01), De Vaney
patent: 2846153 (1958-08-01), Krough
patent: 3021008 (1963-02-01), Christian
patent: 4115257 (1978-09-01), Muyler
patent: 4361239 (1982-11-01), Kumandan
Russian Engineering Journal--Designing a drum for Sorting Scrap Metal Guzenko--Vol. L111--No. 2 --pp. 45-48 (1973).
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