Roll configuration for an air press of a papermaking machine
AssigneeVoith Paper Patent GmbH
InventorDavid A. Beck
Life of this patent
Estimating the term…
Abstract
An air press for use in a paper machine removes liquid from a fiber web. The air press includes a plurality of rolls, with each roll having a peripheral surface. The plurality of rolls include at least one pair of adjacent rolls defining a nip therebetween. Each roll in the at least one roll pair has longitudinally opposite replaceable ends. The replaceable ends define a portion of the peripheral surface with the nip therebetween.
Claims24
An air press for use in a paper machine for removing liquid from a fiber web, said air press comprising a plurality of rolls, each said roll having a peripheral surface, said plurality of rolls including at least one pair of adjacent rolls defining a nip therebetween, each said roll in said at least one roll pair including longitudinally opposite replaceable ends, said replaceable ends defining a portion of said peripheral surface with said nip therebetween.
A paper machine for making a fiber web, said paper machine comprising:
- a plurality of conveyor rolls for carrying the fiber web;
- and
- an air press for pressing the fiber web, said air press comprising a plurality of rolls, each said roll having a peripheral surface, said plurality of rolls including at least one pair of adjacent rolls defining a nip therebetween, each said roll in said at least one roll pair including longitudinally opposite replaceable ends, said replaceable ends defining a portion of said peripheral surface with said nip therebetween.
A method of dewatering a fiber web in a paper machine, comprising the steps of:
- providing an air press for pressing the fiber web, said air press comprising a plurality of rolls, each said roll having a peripheral surface, said plurality of rolls including at least one pair of adjacent rolls defining a nip therebetween, each said roll in said at least one roll pair including longitudinally opposite replaceable ends and a middle portion extending between said replaceable ends, said replaceable ends defining a portion of said peripheral surface with said nip therebetween;
- forming a nip pressure which is greater between said replaceable ends than between said middle portions;
- and
- feeding the fiber web through said nip.
Dependencies are inferred from the claim text.