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US 6,884,323 B2Granted
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.
Claims31
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, said at least one main flow channel defined partly in said roll shell and partly in said roll cover.
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;
- wherein said roll shell has a plurality of grooves formed therein, and further including a plurality of tubes respectively positioned in said grooves, each said tube defining a respective said main flow channel.
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;
- and
- at least one opening coincident with a corresponding said secondary flow channel.
1 more element
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;
- and
- a plurality of tubes, each said tube defining a respective said main flow channel.
1 more element
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, including forming the main flow channel partly in the roll shell and partly in the roll cover;
- 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.
2 more elements
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;
- and
- wherein said forming step includes placing a plurality of tubes adjacent an outer periphery of said roll shell.
4 more elements
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 and being partly in said roll shell and partly in said roll cover;
- 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.
3 more elements
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;
- at least intermittently sealing said ends of said main flow channels during rotation of said roll;
- and
- wherein said at least one main flow channel comprises a plurality of main flow channels, and sealing step comprises sealing a subset of said plurality of main flow channels during said rotation of said roll.
4 more elements
Dependencies are inferred from the claim text.