Classifying – separating – and assorting solids – Electrostatic
Patent
1976-12-10
1978-01-17
Miles, Tim R.
Classifying, separating, and assorting solids
Electrostatic
209480, B07C 900
Patent
active
040687597
ABSTRACT:
Spherically-shaped rolling solids are separated from irregularly-shaped nonrolling solids on the upper surface of a conoidally-shaped rotating table whereon most of the spherically-shaped solids roll from the surface of the table and most of the nonrolling solids move circumferentially with the table until they contact a special scraper which deflects the nonrolling solids off the bottom edge of the table. The action of the table, the scraper, and the two combined, causes nonrolling solids to move downwardly, outwardly and circumferentially in a first path, then in a circumferential path, and then downwardly, outwardly and circumferentially in a second path, and off the bottom edge of the table. This movement of the irregularly-shaped solids frees trapped rolling solids and allows them to roll downwardly and outwardly off the table while the nonrolling solids continue to move circumferentially. This continued circumferential movement prevents the nonrolling solids from interfering with the roll of the released spherically-shaped solids and prevents the nonrolling solids from being knocked or carried off the table by the freed rolling solids. This scraper action increases the separating efficiency of the system. Preferably, in the lower portion of the table, the degree of relative circumferential movement of the nonrolling solids is increased so that the rolling solids leave the table well ahead of the point where the nonrolling solids leave the table. This makes it easier to segregate collection of the solids.
REFERENCES:
patent: 1291278 (1919-01-01), Ulrich
patent: 3640373 (1972-02-01), Seragnoli
Atlantic Richfield Company
Folzenlogen M. David
Hill Ralph J.
Miles Tim R.
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