Roll with vibration damper

Details Roll with vibration damper Roll with vibration damper

D - Textiles, Paper

21

F

D21F 3/08 (2006.01) D21G 1/00 (2006.01) D21G 1/02 (2006.01) F16C 13/00 (2006.01) F26B 13/14 (2006.01)

Patent

CA 2124469

ROLL WITH VIBRATION DAMPER ABSTRACT OF THE DISCLOSURE A roll for the preparation or treatment of fiber webs includes a fixed central axis, a roll shell adapted to rotate around the fixed axis and a first chamber disposed between the central axis and the rotatable roll shell. The first chamber is filled with liquid which can transfer a hydraulic supporting force from the central axis to the roll shell. The roll includes a second chamber that is partially filled with air and partially filled with a liquid. Several narrow capillary lines connect the first and second chambers. The capillary characteristic (K) of the capillary lines ranges between about 2.5 x 107 m-2 and about 2.5 x 108 m-2.

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