Screen media and a screening passage therefore

Details Screen media and a screening passage therefore Screen media and a screening passage therefore

1998-05-29

2000-10-31

Lithgow, Thomas M.

Liquid purification or separation

Filter

With residue removing means or agitation of liquid

21049701, 210498, 209306, 209397, 209406, D21D 516, B07B 120, B07B 146

Patent

active

061388386

ABSTRACT:
A screen media (200) for use in screening pulp slurry has a first side (204) and a second side (206). The pulp slurry is fed from the first side of the screen media to the second side of said screen media through a plurality of screening passages (205). Each said screening passage include a contour cut (210) formed in the first side, a back groove (208) formed in the second side, and a residual thickness (234) between the contour cut and the back groove. An elongate slot (235) is formed in the residual material, and the residual thickness has a substantially uniform thickness about the elongate slot. Where the slot extends completely through the residual material it defines a through-slit (236) through which slurry flows and is filtered.

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"OptiGuard.TM. CSC Continuous Slotted Cylinders," J&L Fiber Services product brochure, Nov., 1997.
"RSC.TM. Screen Cylinders," J&L Fiber Services product brochure, Dec., 1997 .

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