Solid Bowl Centrifuge
AssigneeAndritz Inc.
InventorsChristian Dousset, Jean-Marc HUYGHE, Laurentiu Pasol
Life of this patent
Estimating the term…
Abstract
The invention relates to a solid bowl centrifuge with a horizontal elongated, hollow, rotatable, solid-wall bowl (2) with an inlet and an outlet and a rotatable screw conveyor with a shaft (6) and helical screw (7) rotatable mounted inside said bowl and extending substantially the full length thereof. It is mainly characterized in that on the shaft there are mounted a number of truncated conical discs (24), whereby the discs are directly surrounded by the helical screw. With such design the decanter capacity can be increased and the polymer consumption reduced. Further power consumption can be reduced by obtaining the same performances as the traditional decanter at lower rotational speed (lower g-force).
Claims16
-9. (canceled)
Solid bowl centrifuge including:
- a horizontal elongated, hollow, rotatable, solid-wall bowl (2) with an inlet (11), an outlet (18) for solids, and an outlet (19) for liquids,
- a rotatable screw conveyor (5) with a shaft (6) having a length and helical screw (7) rotatably mounted inside said bowl (2) and extending substantially the full length of the bowl, and
- on the shaft (5) there are mounted a plurality of truncated conical discs (24),
- wherein the improvement comprises that the discs (24) are directly surrounded by the helical screw (7) with a gap between the discs and the screw and without any separating wall in between.
Dependencies are inferred from the claim text.