Intermeshing screw-type refiner

Dispensing – Agitator followed by discharge assistant and/or... – One rotary and one reciprocating

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Details

222235, 222238, 222412, 222564, 100146, 100148, B30B 304, B30B 1532

Patent

active

043939830

ABSTRACT:
In a refiner for treating cellulose pulp or similar material of the type comprising two intermeshing rotary screws operating in a housing having a material inlet and a material outlet, the surface of each screw comprises a feeding thread section merging into a feed-resisting surface section, the outlet being provided in a side-wall of the housing near the zone where the feeding thread sections on both screws end and the feed-reversing surface sections begin. The outlet opens into an outwardly flaring collar having a plane mouth opening oblique in relation to the direction of material discharge through the material outlet. The mouth opening cooperates with a closure element to restrict the outlet area to control working pressure conditions within the housing.

REFERENCES:
patent: 567509 (1896-09-01), Reitz
patent: 2119162 (1938-05-01), Hartner
patent: 2452555 (1948-11-01), De La Rosa, Sr.
patent: 2458068 (1949-01-01), Fuller
patent: 2778482 (1957-01-01), Lasch et al.
patent: 3023455 (1962-03-01), Geier et al.
patent: 3111082 (1963-11-01), Larsson et al.
patent: 3856278 (1974-12-01), Werner et al.
patent: 4121967 (1978-10-01), Reinhall

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