Importance

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Abstract

A solid bowl screw centrifuge has a rotatable drum, a screw arranged in the drum and rotatable relative to the rotatable drum with a differential speed, one or more drum bearings for bearing the drum, a sealing assembly arranged between a drum shaft portion and the housing for protecting at least one of the drum bearings from an ingress of constituents of a suspension. Each sealing assembly includes at least two radial shaft sealing rings arranged with a mutual axial spacing so as to form at least one chamber. Respective radial shaft sealing rings are arranged such that their respective sealing lips are directed away from the respective chamber. A gas source having a gas pressure can impinge on the respective chamber.

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First Claim