Underflow concentration control for nozzle centrifuges

Details Underflow concentration control for nozzle centrifuges Underflow concentration control for nozzle centrifuges

1984-04-30

1985-03-19

Jenkins, Robert W.

Imperforate bowl: centrifugal separators

Bowl and means external thereof for recirculating material

494 37, B04B 700

Patent

active

045056978

ABSTRACT:
In a centrifuge for the separation of solids from liquid in which concentrated solids are discharged from radial nozzles at the rotor periphery, there is a need for control of the solids concentration by controlling the recycle of solids to the centrifuge. The present invention provides a flow path divided into small cross-sectional areas, as with parallel plates, for the flow of recycled solids therethrough, at an appropriate pressure drop and flow rate to cause a strong dependence on fluid viscosity. A small receiving tank, with a fixed or adjustable weir, is attached to the inlet of the sectional flow path to provide a constant pressure drop through the device by maintaining a volume of concentrated solids at a pre-selected height above the inlet. The cross-sectional area available for flow is manually adjustable by means of a blocking plate at the inlet of the sectioned flow path.

REFERENCES:
patent: 2223999 (1940-12-01), Miller
patent: 2779536 (1957-01-01), Pomeroy
patent: 3204868 (1965-09-01), Honeychurch
patent: 3799431 (1974-03-01), Lavanchy
patent: 4162760 (1979-07-01), Hill

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