Solid-bowl screw centrifuge with discharge channel inclined toward rotational axis of centrifuge

US10252277B2 · kind B2 · utility

Assignee

• GEA Mechanical Equipment GmbH · DE

Inventors

• Ludger Horstkoetter · Ennigerloh, DE
• Juergen Hermeler · Haltern, DE
• Stefan Terholsen · Oelde, DE

Key dates

• Filing date: Jul 5, 2013
• Grant date: Apr 9, 2019
• Expiry date: Dec 6, 2035

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B04B2001/2083
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A solid-bowl screw centrifuge includes one or more discharge weir(s) for discharging clarified liquid out of a drum which has a rotational axis and a rotational direction. The centrifuge has one or more through-opening(s) in a drum cover, each of which is associated with a weir plate having a recess. An open discharge channel is formed on the through-opening at the recess, a deflection from a direction parallel to the rotational direction of the drum substantially into a circumferential direction in the rotational direction being carried out by the discharge channel. The discharge channel is designed such that exiting liquid is conducted over the base of the discharge channel to an overflow edge. The base of the discharge channel to the overflow edge is inclined inwards in the rotational direction relative to the tangential direction by an inclination angle δ≥0 at the point of the overflow edge.