Underflow control for nozzle centrifuges

Details Underflow control for nozzle centrifuges Underflow control for nozzle centrifuges

B - Operations, Transporting

04

B

B04B 7/00 (2006.01) B04B 1/10 (2006.01) B04B 13/00 (2006.01)

Patent

CA 2146768

In a centrifuge for the separation of solids from liquid in which concentrated solids are discharged from radial nozzles (26, 28) at the periphery, there is provided a concentrated solids underflow discharge control apparatus (30) which senses an in- creased concentration of solids in the underflow (24) and adjusts the flow of the recycle stream as a result thereof to prevent sol- ids from spilling over into the effluent overflow (22). A sensing chamber (40) and a control module (42) having a flow interfer- ence device (102) is utilized to measure a set level backup. Any alteration of said level is detected by a level sensor (60) which sends a signal to a level indicator control (62) and in turn controls the opening and closing of a recyle line valve (46) which con- trols underflow.

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