Headbox flow controls

Details Headbox flow controls Headbox flow controls

D - Textiles, Paper

21

F

92/17.2

D21F 1/02 (2006.01)

Patent

CA 1076864

ABSTRACT OF THE DISCLOSURE: In a headbox system of a paper-manufacturing machine, equalizing chamber means having an outlet end and an interior for receiving pulp stock, from a source such as one or more distribution pipes , and delivering the pulp stock to the outlet end, a slice distant from the equalizing chamber means, a plu- rality of elongated passage-froming means situated beside each other in a substantially horizontal plane and respectively having inlet ends communicating with the outlet end of the equalizing chamber means for receiving therefrom pulp stock to be directed by the plurality of passage-forming means toward the slice, throttling means situated between the outlet end of the chamber means and the inlet ends of the passage-forming means for throttling the flow of pulp stock from the equalizing chamber means into the plurality of passage-forming means, and flow- guide means extending along the interior of the equalizing chamber means, through the throttling means, and along at least some of the passage-forming means for guiding the pulp stock flowing from the equalizing chamber means into and along the plurality of passage-forming means and for preventing creation of flow-rate variations from changes in the direction of flow of pulp stock from the equalizing chamber means into the plurality of passage-forming means.

285082

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