B - Operations – Transporting – 02 – C
Patent
B - Operations, Transporting
02
C
B02C 7/14 (2006.01) D21D 1/30 (2006.01)
Patent
CA 2122142
2122142 9314871 PCTABS00024 A bearing system in a refiner for manufacturing pulp, where the raw material is refined in a refining gap between at least one pair of refining members (22, 24) rotating relative to one another, and where at least one of said refining members (24) is supported by an axially movable and rotary axle (26). The bearing system comprises a combined hydrostatic/hydrodynamic axial bearing arrangement and consists of a housing (32) with at least one rotary piston (30), which is attached on the rotary axle (26) for rotation with the same. A stationary holder (29, 33) is located in the housing (32) on at least one side of the rotary piston (30). An outer and an inner ring cylinder (200, 210 and, respectively, 202, 212) are arranged axially movable in an outer and an inner chamber, respectively (40, 41 and, respectively, 42, 43) in the holder (29, 33). The ring cylinders thereby are arranged to be pressed against one end surface of the piston (30) so that sealing gaps (211) are formed therebetween. Between the ring cylinders (200, 210, and, respectively, 202, 212), the piston (30) and the holder (29, 33) a cavity (213, 214) is defined, and a channel (246, 248) is provided for the supply of a hydraulic pressure medium to said cavity (213, 214) for determining the axial position of the piston.
Kjellqvist Olof
Reinhall Rolf B.
Fetherstonhaugh & Co.
Sunds Defibrator Industries Aktiebolag
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