Refiner disk with alternating depth grooves

Details Refiner disk with alternating depth grooves Refiner disk with alternating depth grooves

1994-03-07

1995-12-19

Eley, Timothy V.

Solid material comminution or disintegration

Apparatus

Comminuting elements

2412612, B02C 712

Patent

active

054762286

ABSTRACT:
A disk especially suitable for a papermaking wood chip and pulp refiner has an array of refiner bars which protrude outwardly from a base member. Grooves are formed between adjacent bars which may change in depth toward the outer diameter of the disk. Alternating grooves are of greater depth, to increase the open area of the disk to facilitate steam evacuation without significantly reducing the bar stiffness and hence resistance to breakage and deflection of individual bars.

REFERENCES:
patent: 104107 (1870-06-01), Bowman
patent: 1696514 (1928-12-01), Anthony
patent: 2035994 (1936-03-01), Sutherland, Jr.
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patent: 4039154 (1977-08-01), Peterson
patent: 4676440 (1987-06-01), Perkola
patent: 4712745 (1987-12-01), Leith
patent: 5046672 (1991-09-01), Demler et al.

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