Screen

Details Screen Screen

1998-08-17

1999-10-05

Noland, Kenneth W.

Classifying, separating, and assorting solids

Sifting

With liquid treatment

209305, B07B 104

Patent

active

059609621

ABSTRACT:
A pressure screen comprises an outer housing with a pulp inlet, and accepts and rejects outlets and an advantageous mount of a stationary screen drum (screen cylinder) in the housing. The screen drum is secured at an upper end flange with bolts to an intermediate ring and supported via the intermediate ring by the housing. A rotating rotor is disposed inside the screen drum. The bottom end of the screen drum is provided with at least one groove with at least one primarily flexible material ring disposed in the groove. Cooperating substantially conical surfaces are provided in the bottom of the screen drum and a bottom intermediate ring, in which the groove is formed.

REFERENCES:
patent: 4634521 (1987-01-01), Simola et al.
patent: 4684444 (1987-08-01), Meinecke et al.
patent: 5236470 (1993-08-01), Levin
patent: 5513757 (1996-05-01), Papetti
patent: 5798025 (1998-08-01), Iwashige

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