Apparatus for classifying the constituents of a pneumatically co

Details Apparatus for classifying the constituents of a pneumatically co Apparatus for classifying the constituents of a pneumatically co

1979-01-23

1981-02-17

Hill, Ralph J.

Classifying, separating, and assorting solids

Sifting

Feeding

209 31, 209143, 209281, B07B 706

Patent

active

042513561

ABSTRACT:
The outlet of a pneumatic conveyor delivers a mixture of tobacco leaves and sand to the upper end of an arcuate duct which is located below a rotating air withdrawing wheel. That wall of the duct which faces the outlet of the pneumatic conveyor has holes for the passage of sand particles whereas the leaves descend in the duct and are evacuated by a cell wheel. The air withdrawing wheel draws air from the outlet of the pneumatic conveyor as well as from a suction chamber which is adjacent to the perforated wall of the duct and serves to collect the particles of sand. The rate at which the air flows from the suction chamber and/or the speed at which air flows from the outlet of the pneumatic conveyor is adjustable by pivotable flaps.

REFERENCES:
patent: 2173087 (1939-08-01), Eissmann
patent: 2988213 (1961-06-01), Davis et al.
patent: 3010576 (1961-11-01), Harte et al.
patent: 3116238 (1963-12-01), Van Etten
patent: 3265210 (1966-08-01), Harte et al.

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