Straining apparatus with a continuous inwardly helical open channel

US5108602A · kind A · utility

Assignees

• Hein, Lehmann Trenn- und Fordertechnik GmbH · DE
• Isenmann Siebe GmbH · DE

Inventors

• Gerhard Schmidt · Graz, AT
• Heinrich Schmidt · Düsseldorf, DE
• Christian Neukam · Kalchreuth, DE

Key dates

• Filing date: Aug 7, 1990
• Grant date: Apr 28, 1992
• Expiry date: Aug 7, 2010

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D29/908
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a straining apparatus for the separating of solid-liquid mixtures with a downwardly tapering straining basket, the basket inside wall of which has an inclination (.alpha.) increasing from top to bottom, the charging of material to be strained being carried out approximately tangentially at the upper end of the straining basket and the material to be strained flowing downwards helically with radii becoming narrower, the straining basket wall forming at least one helical, inwardly open channel, which is bounded at top and bottom by helical side walls, between which the channel base having straining openings is arranged, the radius of which base decreases from top to bottom and which is inclined with respect to the vertical axis by the angle (.alpha.) in such a way that, in feeding, the inclination is at first small and then increases constantly.