Apparatus for supplying particulate material to tobacco processi

Details Apparatus for supplying particulate material to tobacco processi Apparatus for supplying particulate material to tobacco processi

1984-05-21

1986-05-13

Millin, V.

Tobacco

Cigar or cigarette making

Tobacco feeding

1311092, 131909, A24C 539, A24C 534, A24C 514

Patent

active

045879796

ABSTRACT:
A pneumatic conveyor draws particles of tobacco from a vibrating trough by causing an air stream to flow from its intake end, which is adjacent to the trough, to its intake end which is connected to a suction generating device. A cyclone separator is installed in the conveyor to segregate the particulate material from the air stream and to discharge such material into a duct which feeds the material by gravity to an intermittently operated cell wheel evacuator. The latter drops batches of particulate material into the magazine of the distributor in a cigarette rod making machine. The conveyor has an elongated diffusor which is disposed upstream of the cyclone separator to decelerate the air stream, and such diffusor is followed by an arcuate portion whose radius of curvature is greater than the radius of the cylindrical wall surrounding the chamber of the cyclone separator. This ensures reliable separation of acceptable particulate material and evacuation of smaller particulate material, including dust, from the separator by the suction generating device.

REFERENCES:
patent: 3386773 (1968-06-01), Ballard, Jr.
patent: 3580644 (1971-05-01), Ballard, Jr.
patent: 3826065 (1974-07-01), Labbe
patent: 4050741 (1977-09-01), Dickinson
patent: 4458698 (1984-07-01), Brackman
patent: 4475562 (1984-10-01), Thatcher et al.
patent: 4491138 (1985-01-01), Labbe

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