Classifying – separating – and assorting solids – Plural – diverse separating operations – Gaseous suspension and sifting
Patent
1981-11-27
1983-05-10
Lindsay, Jr., Robert L.
Classifying, separating, and assorting solids
Plural, diverse separating operations
Gaseous suspension and sifting
55290, 55302, 209 27, 209 31, 209 35, 209137, 209139R, B07B 900
Patent
active
043828574
ABSTRACT:
Self-cleaning separator apparatus is used in combination with a vertical settling chamber for extracting fiber product from a moving air stream. The separator apparatus includes a housing forming an air stream inlet, a product discharge outlet and a clean air outlet. A rotatable screen is interposed between the air stream inlet and the clean air outlet for collecting the fiber product on the screen as the air stream flows through the screen for discharge into the atmosphere. An air flow gradient is induced in the settling chamber whereby the air flow rate through the rotating screen is substantially smaller near the bottom of the settling chamber than it is near the top of the settling chamber. The gradient is produced in part by a transversely extending baffle plate mounted in the annular flow region near the product discharge outlet, and in part by the off-center placement of the rotary screen closely adjacent the sidewalls of the settling chamber which converge toward the product discharge outlet. The off-center placement of the rotary screen, relative to the settling chamber sidewalls, and the presence of the baffle plate within the annular flow region reduce the air stream flow rate at the entrance to the product discharge outlet. The accumulated fiber product drops off of the rotating screen and falls into the product discharge outlet by gravity flow as the screen turns through the low flow rate region.
REFERENCES:
patent: 3173861 (1965-03-01), Hager et al.
patent: 3262457 (1966-07-01), Gamberini
patent: 4251356 (1981-02-01), Harte
patent: 4253855 (1981-03-01), Jackson et al.
patent: 4268294 (1981-05-01), Laughlin et al.
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