| 摘要 |
A curved roll having spools rotatable about an axle on bearings lubricates the bearings with an annular body of liquid lubricant formed on the interior of the spools as they rotate. A pair of scoops located at opposite ends of the axle and facing in opposite rotational directions recirculate lubricant from the annulus through a flow path exterior to the roll and which includes a filter, a flow control device, pressure and flow gauges and a valve for adding and draining the lubricant from the system. The lubricant in the annulus is distributed uniformly along the roll by level control scoops that are each positioned in a compartment defined by an adjacent pair of bearings, the axle and the spools. Excess liquid in one compartment is skimmed by the associated up-take scoop and directed to lubricant reservoir; whereas in a compartment having insufficient lubricant, an oppositely directed drain scoop receives oil from the reservoir. Slots formed in the spools over the bearings and a pattern of grooves machined on the outer surface of the spool provide a liquid flow path for axial redistribution of the liquid when the roll is rotating. The groove pattern and bearing shields prevent the lubricant from flowing between compartments when the roll is stationary. A vent line communicates between the compartments and atmosphere to relieve pressure differences due to thermal cycling. Check valves and an air dryer connected in the vent line limit the intake of moisture.
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