Imperforate bowl: centrifugal separators – Rotatable bowl – Including driven material-moving means therein
Patent
1993-05-21
1994-05-10
Gerrity, Stephen F.
Imperforate bowl: centrifugal separators
Rotatable bowl
Including driven material-moving means therein
494 53, B04B 120
Patent
active
053103998
ABSTRACT:
A sedimentation centrifuge includes a bowl which is supplied with a feed mixture, i.e., a solid-liquid mixture, from a supply pipe. When the bowl rotates at high speed, heavy solids are displaced radially outwardly toward and sedimented on the inner wall surface of the bowl. The solid particles are then discharged through a discharge hole of the bowl and an outlet passage by a screw conveyor in the bowl. During rotation of the bowl, fins on the screw conveyor assist in separating the liquid into heavy and light liquid phases with increased separation efficiency. The screw conveyor has screw flights with an inner portion which is inclined with respect to the axis of rotation of the bowl and an outer portion which is normal to an inner wall surface of the bowl. The separated heavy and light liquids are separately discharged from the bowl through respective outlet passages.
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Cooley Charles
Gerrity Stephen F.
Kotobuki Techrex Ltd.
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