Improved controlled deflection roll lubrication

Details Improved controlled deflection roll lubrication Improved controlled deflection roll lubrication

D - Textiles, Paper

21

G

D21G 1/02 (2006.01) B21B 13/14 (2006.01) B21B 27/08 (2006.01) D21F 3/00 (2006.01) F16C 13/00 (2006.01) F16C 13/02 (2006.01)

Patent

CA 2046918

Apparatus for controlling the oxygenation of both the bearing lubrication oil and the hydraulic oil used for actuating the roll shell support elements (12) in a controlled deflection roll (10), such as used in the papermaking industry, includes a seal (26a, b) at either end of the controlled deflection roll (10) which establishes a gas-impervious seal between the roll shell support and rotation bearings (24a, b) at either end of the roll and the interior (28) of the roll. A source (40) of pressurized inert gas is linked (46, 42) to both the interior of the roll and to the reservoir (38) of hydraulic oil used to actuate the roll shell support shoes (12). This prevents oxygen from interfacing with the hydraulic oil at the only two points in the closed system where the hydraulic oil and the atmosphere would otherwise come into contact. A separate bearing oil lubrication system (32, 34, 35, 36) having its own reservoir is maintained to supply bearing lubricant to the bearings (24a, b) and return it to sump (20) while maintaining the bear- ing lubricant separate from the hydraulic oil.

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