Non-contact sealing system for bearings
AssigneeThe Carlyle Johnson Machine Company
InventorMichael Gamache
Life of this patent
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Abstract
A non-contact sealing system for shaft bearings lubricated with lubricating fluid employs a centrifugal pressurizing seal having a stator ring and a rotor ring with a centrifugal pressure chamber to pressurize the fluid and deliver the fluid to remote portions of a bearing through channels in the bearing housing. The system enables bearings to be lubricated at stations remote from the system as well as bearings supporting shafts oriented in the vertical direction.
Claims13
A non-contact sealing system for a shaft bearing lubricated with a lubricating fluid comprising:
- a bearing housing for the shaft bearing for supporting a shaft for rotation about an axis;
- a stator ring for mounting in the bearing housing, the stator ring having an annular channel circumscribing the stator ring;
- a rotor ring for mounting on the shaft supported by the bearing in the bearing housing, the rotor ring being rotatable with the shaft and having an annular centrifugal pressurizing chamber circumscribing the rotor ring for pressurizing lubricating fluid in the chamber when the rotor ring is rotated with the shaft, the annular centrifugal pressurizing chamber being positioned in the annular channel of the stator ring and having a discharge port at the outer periphery of the chamber for discharging pressurized lubricating fluid into the annular channel of the stator ring;
- and
- the bearing housing having fluid conduits communicating with the annular channel of the stator ring for carrying lubricating fluid pressurized in the centrifugal pressurizing chamber of the rotor ring to the shaft bearing supported in the bearing housing,
- the annular channel of the stator ring having a series of circumaxially spaced openings in the outer periphery of the annular channel, and the fluid conduits in the bearing housing communicate with the openings in the outer periphery of the annular channel to conduct pressurized lubricating fluid from the pressurizing chamber to the shaft bearing.
A non-contact sealing system for sealing a bearing supplied with a lubricating fluid comprising:
- a stator ring for mounting on a shaft coaxially adjacent the bearing to receive lubricating fluid, and defining an annular channel on one side of the ring;
- a rotor ring for mounting on a shaft coaxially adjacent the bearing, and defining an annular pressure chamber positioned substantially in the annular channel at the one side of the stator ring for rotation in the channel, the rotating pressure chamber pressurizing a lubricating fluid for the bearing by virtue of centrifugal force when the rotor ring and chamber are rotated on the shaft adjacent the bearing, the chamber having ports for discharging pressurized lubricating fluid into the annular chamber of the stator ring;
- and
- a bearing housing for supporting the bearing, the rotor ring, and the stator ring when mounted on a shaft with the bearing;
- and
- the stator ring and the bearing housing include lubricating fluid channels leading from the annular channel in the stator through the bearing housing to a remote location opposite from the side of the bearing where the stator and rotor rings are located;
- and
- the annular chamber in the stator ring has a series of circumaxially spaced openings in an outer periphery thereof in communication with the lubricating fluid channels leading to the remote location.
Dependencies are inferred from the claim text.