Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Charging and/or discharging fibrous material
Patent
1975-12-31
1977-08-02
Bashore, S. Leon
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Charging and/or discharging fibrous material
162246, D21C 708
Patent
active
040393739
ABSTRACT:
A static discharger includes a vertical casing connected to a pressurized pulping digester for receiving a stream of fibrous material and having a valve isolated scrap collector positioned on its lower end. A discharge neck on which a blow valve is mounted extends from the casing above the scrap collector and is covered with a grid plate having self-cleaning openings. A pipe mounted tangentially on the casing introduces flooding liquid thereto while a similar pipe may be located on the scrap collector. A sealed casing cleanout opening may be provided. No moving parts are involved since discharger agitations result from the flooding media. Heavy foreign body impurities in the stream sink to the scrap collector where they are removed without process interruption. Buoyant objects remain suspended in the liquid. Blow valve plugging is eliminated. For higher fiber consistency, a grid plate wiping agitator may be advantageously installed in the casing.
REFERENCES:
patent: 2425024 (1947-08-01), Beveridge et al.
patent: 2616802 (1952-11-01), Kehoe et al.
patent: 2882967 (1959-04-01), Surino
patent: 2963086 (1960-12-01), Green
patent: 3446701 (1969-05-01), Lloyd
patent: 3519532 (1970-07-01), Sutherland
patent: 3617433 (1971-11-01), Sutherland
American Defibrator, Inc.
Bashore S. Leon
Kratz Peter F.
Munson Eric Y.
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