Apparatus for damping pulp stock pressure fluctuations in a head

Details Apparatus for damping pulp stock pressure fluctuations in a head Apparatus for damping pulp stock pressure fluctuations in a head

1977-10-05

1979-09-04

Fisher, Richard V.

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

138 30, 162340, 162380, D21F 102, D21F 106

Patent

active

041667590

ABSTRACT:
A headbox of a paper machine includes a header chamber for receiving pulp stock, a distribution pipe system for receiving pulp stock from the header chamber, a flow-equalizing chamber for receiving pulp stock from the distribution pipe system, a turbulence passage system for receiving pulp stock from the flow-equalizing chamber, and a lip slice for receiving pulp stock from the turbulence passage system and discharging the pulp stock from the headbox. At least one of the above chambers is defined in part by a movable wall structure which has an inner surface contacting the pulp stock so that this movable wall structure can move in response to pressure fluctuations in the pulp stock. This wall structure has an outer surface which defines part of the hollow interior of an enclosure in which air under pressure is situated, so that through the movable wall structure the air under pressure can act on the pulp stock to damp pressure fluctuations thereof.

REFERENCES:
patent: 2448118 (1948-08-01), Pellettere
patent: 2535732 (1950-12-01), Goodwillie
patent: 3563852 (1971-02-01), Rojecki
patent: 3802960 (1974-04-01), Spengos et al.
patent: 4030971 (1977-06-01), Justus
patent: 4063997 (1977-12-01), Kirjavainen et al.

Affiliated with

Also associated with

Rating

Apparatus for damping pulp stock pressure fluctuations in a head does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for damping pulp stock pressure fluctuations in a head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for damping pulp stock pressure fluctuations in a head will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2127293