Screening device for slurries with improved rotor and hub design

Details Screening device for slurries with improved rotor and hub design Screening device for slurries with improved rotor and hub design

1990-03-20

1991-10-29

Dawson, Robert A.

Liquid purification or separation

Recirculation

162 4, 162380, 209273, 210358, 210414, 210415, 241 4617, 416179, 416237, B04B 512

Patent

active

050613707

ABSTRACT:
Aqueous slurries of particulate materials, particularly wood pulp slurries produced during the recycling of newsprint and other paper products, are processed to recover an accepts fraction in a rotary filter having a hollow cylindrical rotor. The rotor is modified to prevent plugging by outwardly tapering the inner wall of the rotor from its upstream towards a downstream end, so as to cause heavy particles tending to accumulate on the wall to flow towards the downstream end and not accumulate. At the downstream end, vane-like hub supports are provided angularly offset from the axis of the rotor to impart motion to the slurry passing through the rotor to assist in circulation of the slurry within the filter housing.

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