Refiner for wood pulp or the like

Details Refiner for wood pulp or the like Refiner for wood pulp or the like

1975-01-23

1976-10-05

Custer, Jr., Granville Y.

Solid material comminution or disintegration

Apparatus

Cooperating comminuting surfaces

2412591, 2412611, 2412613, B02C 714

Patent

active

039840573

ABSTRACT:
A disc refiner for pulp has a housing defining a chamber with an inlet and an outlet, three coaxial discs mounted in the chamber, and a shaft which rotates the central disc and extends with clearance through a large opening in one of the outer discs. The other outer disc is adjustable axially toward and away from the central disc and the central disc is movable axially of the shaft between the two outer discs. The stock enters via inlet and passes through the opening of the one outer disc. A portion of stock thereupon passes radially outwardly between the one outer disc and the central disc to be comminuted by ribs on the adjacent surfaces of the one outer disc and the central disc. The remaining portion of stock flows through several relatively large openings of the central disc and thereupon radially outwardly toward the outlet by passing between ribs provided on the neighboring surfaces of the central disc and the other outer disc. Each of the discs is a one-piece body.

REFERENCES:
patent: 2561043 (1951-07-01), Ayers
patent: 2968444 (1961-01-01), Jones
patent: 3438586 (1969-04-01), Cancilla
patent: 3614826 (1971-10-01), Pilao
patent: 3841573 (1974-10-01), Kahmann
patent: 3845910 (1974-11-01), Cledaniel
patent: 3854667 (1974-12-01), Baehr et al.

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