Rotating element for screening apparatus with a contour surface

Details Rotating element for screening apparatus with a contour surface Rotating element for screening apparatus with a contour surface

1990-08-14

1993-03-09

Cintins, Ivars

Liquid purification or separation

Filter

With residue removing means or agitation of liquid

209273, B01D 2962, B07B 120

Patent

active

051924382

ABSTRACT:
An apparatus for screening pulp comprises a vessel, a cylindrical screen within the vessel, a rotor moving in the vicinity of the screen at a predetermined speed, an inlet for the unscreened pulp, an outlet for the screened pulp in the vessel. The rotor is non-cylindrical, for instance, elliptical, triangular, and in general, is multi-cam. The rotor has a contour surface which is achieved by attaching bars of the contoured shape to the surface of the rotor, for instance by welding. According to one embodiment, the contour surface of the rotor is discontinuous. The bars form a plurality of spaced protrusions instead of a single protrusion along the entire axial length of the rotor.

REFERENCES:
patent: 4586172 (1971-06-01), Young
patent: 4950402 (1990-08-01), Frejborg

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