Vented main roll for press assembly in a paper machine
AssigneeVoith Paper Patent GmbH
InventorsDavid A. Beck, Thomas Gorshe
Life of this patent
Estimating the term…
Abstract
A roll for use in a paper machine includes a roll shell having an inner periphery. A roll cover is positioned around the roll shell and has an outer surface. The roll cover and/or the roll shell include at least one main flow channel positioned radially inward from the outer surface and radially outward from the inner periphery. The roll cover includes at least one secondary flow channel in communication with each of the outer surface and at least one main flow channel.
Claims32
A roll for use in a paper machine, comprising:
- a roll shell having an inner periphery;
- a roll cover around said roll shell and having an outer surface, at least one of said roll cover and said roll shell including at least one main flow channel positioned radially inward from said outer surface and radially outward from said inner periphery, said roll cover including at least one secondary flow channel in communication with each of said outer surface and at least one said main flow channel.
A method of manufacturing a roll for use in a paper machine, comprising the steps of:
- providing a roll shell;
- covering said roll shell with a roll cover;
- forming at least one main flow channel radially inward from an outer surface of said roll cover and radially outward from an inner periphery of said roll shell;
- and
- machining at least one secondary flow channel in said roll cover which is in communication with each of said outer surface and at least one said main flow channel.
A method of operating a roll in a paper machine, comprising the steps of:
- providing a roll shell having opposite ends and an inner periphery;
- providing a roll cover around said roll shell, said roll cover having an outer surface;
- providing at least one main flow channel radially inward from said outer surface and radially outward from said inner periphery, each said main flow channel having opposite ends terminating at said respective roll shell ends;
- providing at least one secondary flow channel in said roll cover, each said secondary flow channel being in communication with each of said outer surface and at least one said main flow channel;
- and
- at least intermittently sealing said ends of said main flow channels during rotation of said roll.
Dependencies are inferred from the claim text.