B - Operations – Transporting – 04 – B
Patent
B - Operations, Transporting
04
B
B04B 1/20 (2006.01)
Patent
CA 2110820
A decanter centrifuge (10') for separating the constituent parts of a liquid feed mixture, the centrifuge (10') including a bowl (12) rotatable about its longitudinal axis (38), the bowl (12) having a series of solids discharge ports having a weir surface thereon, the rotation of the bowl (12) subjecting the feed mixture to a centrifu- gal force and separating the feed mixture into separate layers of solids and liquids dependent upon density; a screw conveyor (14) coaxially mounted for rotation within the bowl (12), the conveyor (14) having a series of conveyor flights extending from a central hub to a position adjacent the inside wall of the bowl (12), the con- veyor (14) rotating at differential speed with respect to the bowl (12), such that the conveyor flights move the separated solids layer towards and discharge the solids layer from the solids discharge ports therein; and a bowl hub (22') attached to the bowl (12), the bowl hub (22') having a series openings therein forming liquid dis- charge ports (24') for the separated liquid layer. The decanter cen- trifuge (10') further including an annular inflatable element (36, 36') positioned adjacent the bowl hub (22') within the bowl (12). The inflatable element (36, 36') adapted to alter the characteristics of the solids layer discharge by varying the radial position (40) of the discharge of the liquid layer from the bowl (12).
Alfa Laval Inc.
Alfa Laval Separation Inc.
Borden Ladner Gervais Llp
LandOfFree
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