Screening apparatus for paper making stock

Details Screening apparatus for paper making stock Screening apparatus for paper making stock

1990-11-19

1991-12-17

Huppert, Michael S.

Classifying, separating, and assorting solids

Sifting

With liquid treatment

B07B 120

Patent

active

050728342

ABSTRACT:
Pressure screening apparatus for paper making stock embodies a cylindrical perforated screening member which defines screening and accepts chambers on the inside and outside thereof respectively in a closed housing which is filled with liquid stock under pressure in operation. A rotor member which operates in the screening chamber to keep the screening perforations open is specially constructed to provide it with sufficient buoyancy to counterbalance its weight when the apparatus is in operation and the housing is therefore filled with liquid stock. In the preferred form, the housing is mounted with the rotor axis horizontal, but it can also be made with the rotor axis vertical.

REFERENCES:
patent: 3713536 (1973-01-01), Hooper
patent: 3964996 (1976-06-01), Holz et al.
patent: 4043919 (1977-08-01), Hutzler
patent: 4111373 (1978-09-01), Holz
patent: 4447320 (1984-05-01), Lamort
patent: 4855038 (1988-08-01), LeBlanc
patent: 4981583 (1991-01-01), Le Blanc

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