Press roll

Details Press roll Press roll

D - Textiles, Paper

21

F

D21F 3/08 (2006.01) D21F 3/02 (2006.01)

Patent

CA 2080695

In order to increase the life of a flexible jacket in a shoe type press roll having a flexible jacket (11), end wall displacing means (28) and jacket streching means (27), the end wall displacing means (28) are designed to permit a setting of an arbitrary operating position for one roll end wall (18) between two end positions on one of the two stub shafts (13) of the roll, and the jack- et stretching means (27) are designed to maintain the stretching force substantially constant, whereby the other roll end wall (22) will be self-positioning and will automatically follow each axial displacement of said one roll end wall (18). Consequently, it will be possible to let the end walls (18, 22) be placed in one end position during a first period of operation and to displace them, for each subsequent period of operation, and adequate distance towards the other end position, whereby the fatigue and the wear of the roll jacket (11), which occur primarily at the axial end of the press shoe (14), will be spread over an area corresponding to the entire displacement distance between the end positions.

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