Straining apparatus with a continuous inwardly helical open chan

Details Straining apparatus with a continuous inwardly helical open chan Straining apparatus with a continuous inwardly helical open chan

1990-08-07

1992-04-28

Dawson, Robert A.

Liquid purification or separation

Diverse distinct separators

Including a filter

209254, 209264, 209281, 209362, 209434, 210414, 210415, 2105121, 210541, B01D 3327

Patent

active

051086026

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.

REFERENCES:
patent: 2760504 (1956-08-01), Spurlin
patent: 4269703 (1981-05-01), Bruderlein
patent: 4708795 (1987-11-01), Schmidt et al.
patent: 4861462 (1989-08-01), Lehmann et al.

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