Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...
Patent
1998-09-30
2000-03-28
Chin, Peter
Paper making and fiber liberation
Apparatus
Running or indefinite length product forming and/or treating...
1623581, 162361, 492 20, 100153, D21F 300, D21H 1100, B31F 107, B30B 300
Patent
active
060426942
ABSTRACT:
A shoe press for paper or board machines comprises a press shoe; a counter roll; the press shoe and the counter roll forming between themselves an extended nip for a paper or cardboard web and a circulated flexible belt; and at least one hydraulic loading cylinder for pressing the press shoe against the counter roll. Hydrostatic pockets are arranged in the side of the press shoe facing the counter roll and hydrostatic compartments are formed between the opposite side of the press shoe and the loading cylinders, the pockets and compartment being adapted to be supplied with hydraulic fluid. At least one pipe for supplying hydraulic fluid to the compartments and/or pockets is releasably attached to one side of the press shoe in the longitudinal direction thereof, and the pipe has through holes in its wall, which holes each communicate with a duct at one end thereof, the ducts being formed in the press shoe. The ducts open at their other ends into working chambers in the loading cylinders and/or into the hydrostatic compartments and/or into the hydrostatic pockets.
REFERENCES:
patent: 5676799 (1997-10-01), Meschenmoser et al.
Chin Peter
Valmet-Karlstad AB
Walls Dionne A.
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