Automatic particle-size analyzer with divided drum

Details Automatic particle-size analyzer with divided drum Automatic particle-size analyzer with divided drum

1988-03-14

1989-01-10

Cherry, Johnny D.

Classifying, separating, and assorting solids

Sifting

Special applications

209261, 209287, 209309, 209311, B07B 128

Patent

active

047972041

ABSTRACT:
An apparatus for automatic screen analysis of a granular material in which the material is screened from a polygonal drum which is divided crosswise into at least two chambers by a transverse partition. A first chamber has progressively coarser screens on each of its faces except one, which has a downward slanting ramp for transferring the sample into a second chamber. Particles are transferred or chuted into the second chamber after they have been screened on all the screens of the first chamber. The second chamber has screens progressively coarser than those in the first chamber, for making more cuts. This construction increases the number of graded screening surfaces available without requiring greater drum length or more sides.

REFERENCES:
patent: 1798459 (1931-03-01), Elmore et al.
patent: 3591001 (1971-07-01), Quesnel
patent: 3750884 (1973-08-01), Satake
patent: 4043901 (1977-08-01), Gauld
patent: 4487323 (1984-12-01), Marrs
patent: 4702826 (1987-10-01), Pogue

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