Solid bowl centrifuge with terminal clarification device

Details Solid bowl centrifuge with terminal clarification device Solid bowl centrifuge with terminal clarification device

1986-05-07

1987-12-22

Jenkins, Robert W.

Imperforate bowl: centrifugal separators

With means for filtering

494 53, B04B 716

Patent

active

047144564

ABSTRACT:
The solid bowl screw centrifuge consists of a housing (1) in which a drum (2) is rotatable. A rotatably mounted conveyor screw (3) is situated inside the drum (2). The drum (2) and screw (3) rotate at slightly differing speeds of rotation when in operation. The housing (1) is cylindrical in the region of the clarifying part (I) and conical in the region of the demoisturizing part (II). The suspension inflow (5,6) opens into the hollow screw core (12) at a location between the clarifying part (I) and the demoisturizing part (II). The liquid discharge consists of an overflow weir (16) or stripping pipe (9) on the clarifying part (I). The solids discharge (4) is situated at the end of the demoisturizing part (II). The screw (3) is arranged within the clarifying part (I) on the cylindrical hollow screw core (12) whose peripheral surface is partly or completely equipped with an after-clarifying device through which fluid flows in a radial direction. The after-clarifying device consists either of a filtration device placed on the perforated screw core (12) or of a laminar separator (14). These fittings enable the degree of separation of the centrifuge to be improved, especially in the treatment of solids which sediment only slowly.

REFERENCES:
patent: 3501346 (1970-03-01), Katzen
patent: 3885734 (1975-05-01), Lee
patent: 4009823 (1977-03-01), Nozdrovsky
patent: 4209128 (1980-06-01), Lyons
patent: 4334647 (1982-06-01), Taylor
patent: 4496340 (1985-01-01), Redeker

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