Screw centrifuge with a washing device

Details Screw centrifuge with a washing device Screw centrifuge with a washing device

1983-04-19

1985-01-29

Jenkins, Robert W.

Imperforate bowl: centrifugal separators

With means for furnishing auxiliary fluid to material or...

Liquid

494 27, 494 53, B04B 1512

Patent

active

044963408

ABSTRACT:
The screw centrifuge has a cylindrical clarifying part and a conical desiccating part which is provided with axial supply pipes for a washing liquid and with openings for the passage of the washing liquid into the chamber between the drum and the screw core. A substantial improvement in the washing effect is achieved in that the openings are connected to a liquid distributor which is positioned along a cylindrical helix and which charges the washing liquid regularly along the screw flank over at least one turn in the vicinity of the screw core. The liquid distributor either comprises an overflow channel which is positioned in or directly upstream of the screw flank, or it is formed from a compact series of nozzles which are directed at the screw flank. It is an essential feature of this arrangement that the solids which are pushed up by the screw flanks are covered and saturated regularly with the washing liquid.

REFERENCES:
patent: 3348767 (1967-10-01), Ferney
patent: 3971509 (1976-07-01), Johnsen

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