Paper making and fiber liberation – Apparatus – Apparatus repair – cleaning or conditioning
Patent
1977-04-04
1978-02-28
Fisher, Richard V.
Paper making and fiber liberation
Apparatus
Apparatus repair, cleaning or conditioning
162371, 162372, D21F 310
Patent
active
040765822
ABSTRACT:
A self-cleaning suction roll assembly of the type comprising a generally cylindrical shell having an outer radial surface, an inner radial surface and perforations formed in the shell extending from the outer radial surface to the inner radial surface. The assembly includes a plurality of sealing elements for forming a pressure chamber or compartment with the inner surface of the shell, against which such sealing elements are in engagement in the operation of the assembly. The cylindrical shell is provided with recess or recesses formed on the inner surface across the length thereof whereby fibers and other deleterious material which manage to pass through the perforations may be continuously swept into such recess or recesses and carried out of the pressure chamber or compartment and washed out in normal operation of the assembly so that such fibers and other material will not accumulate against the sealing elements inside the pressure chamber or compartment.
REFERENCES:
patent: 1867930 (1932-07-01), Traquair
patent: 2893487 (1959-07-01), Dahl et al.
patent: 3562883 (1971-02-01), Kobayashi
Diamond International Corporation
Fisher Richard V.
Flocks Karl W.
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