Pressing apparatus having chamber sealing
AssigneeVoith Sulzer Papiertechnik Patent GmbH
InventorDavid A. Beck
Life of this patent
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Abstract
A roller unit for a pressing apparatus for processing a continuous web includes a roller having a first circular end, a second circular end and a cylindrical middle surface. An elastic sealing sleeve having a plurality of pressurizable fluid cavities is positioned over the cylindrical middle surface of the roller. A first end seal can be attached to said first circular end of the roller and a second end seal can be attached to said second circular end or the roller, wherein each of said first end seal and said second end seal includes a plurality of pressurizable fluid cavities.
Claims19
A roller unit for a pressing apparatus for processing a continuous web, comprising:
- a roller having a first circular end, a second circular end and a cylindrical middle surface;
- an elastic sealing sleeve having a plurality of pressurizable fluid cavities, said elastic sealing sleeve being positioned over said cylindrical middle surface of said roller;
- and
- a first end seal connected to said first circular end, and a second end seal connected to said second circular end, each said first end seal and said second end seal structured and arranged to be elastically deformable, and to define a seal for said roller along the radially and laterally outermost surfaces of said roller.
A roller unit for a pressing apparatus for processing a continuous web, comprising:
- a roller having a first circular end, a second circular end and a cylindrical middle surface;
- and
- a first end seal attached to said first circular end and a second end seal attached to said second circular end, each of said first end seal and said second end seal having a plurality of pressurizable fluid cavities, and configured and arranged to be elastically deformable and define a seal along radially and laterally outermost surfaces of said roller.
An apparatus for processing a continuous web, comprising:
- a plurality of rollers arranged for cooperative rotation, each of said plurality of rollers having a first circular end, a second circular end and a cylindrical middle surface, said plurality of rollers defining a corresponding plurality of nips, said plurality of rollers including a first main roller, a second main roller, a first cap roller and a second cap roller, and wherein an axial extent of each of said first and second main rollers and said first and second cap rollers together are arranged in parallel;
- a first sealing panel and a second sealing panel for engaging said first and second circular ends of each of said plurality of rollers, the first and second sealing panels and said plurality of rollers defining at least one chamber;
- a pressure source fluidly coupled to said at least one chamber to pressurize said at least one chamber;
- a first elastic sealing sleeve having a plurality of pressurized fluid cavities, said first elastic sealing sleeve being positioned over said cylindrical middle surface of said first cap roller;
- a second elastic sealing sleeve having a plurality of pressurized fluid cavities, said second elastic sealing sleeve being positioned over said cylindrical middle surface of said second cap roller and;
- loading means operating on said first cap roller and said second cap roller to establish loading of said first and second main rollers by said first and second cap rollers, said loading being related to a desired pressure in said chamber and creating pressure sealing nips between said first main roller and said first and said second sealing sleeves, and between said second main roller and said first and said second sealing sleeves.
Dependencies are inferred from the claim text.