Multi-stage screening apparatus, screen basket and method...

Details Multi-stage screening apparatus, screen basket and method... Multi-stage screening apparatus, screen basket and method...

2003-05-08

2009-02-17

Halpern, Mark (Department: 1791)

Paper making and fiber liberation

Apparatus

Digester

C162S251000, C162S055000, C209S305000

Reexamination Certificate

active

07491296

ABSTRACT:
Screening apparatus for screening pulp suspensions is disclosed comprising a screen basket dividing the interior of the housing into a central chamber and a single outer annular chamber. The suspension is supplied to one of the outer and central chambers, so that an accept fraction passes through the screen, while a reject fraction develops that is prevented from passing through the screen. Dilution is provided by supplying diluting liquid to dilute the reject fraction. The screen basket is divided into at least two separate tubular screen sections. The dilution is provided by at least one annular element axially interconnecting the two tubular screen sections and forming a tubular dilution liquid compartment extending at least substantially around the screen basket. The annular element forms a plurality of dilution liquid ejection passages between the dilution liquid compartment and one of the outer and central chambers.

REFERENCES:
patent: 4157302 (1979-06-01), Bergstedt
patent: 5968315 (1999-10-01), Meinander
patent: 6080274 (2000-06-01), Hautala et al.
patent: 6679384 (2004-01-01), Serres et al.
patent: 0 473 354 (1992-03-01), None
patent: 1 155 185 (2004-04-01), None
patent: 2 613 390 (1988-10-01), None
patent: 506 602 (1998-01-01), None
patent: WO-93/23609 (1993-11-01), None
patent: WO-93/28549 (1999-06-01), None

Affiliated with

Also associated with

Rating

Multi-stage screening apparatus, screen basket and method... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-stage screening apparatus, screen basket and method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-stage screening apparatus, screen basket and method... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4092517