| 摘要 |
A lubricant supply device that reliably removes air from lubricant such as grease and supplies the grease to an object of lubrication. An air detection sensor that detects air is disposed in a grease introduction hole of a grease transporting path. Grease supplied by a pump passes through the grease introduction hole, a chamber divided by a spool and a grease discharge port, and is introduced into the lubricated parts of a machine. If air in the grease is detected by the air detection sensor, a controller drives a switching valve, moves the spool by pressurized air, and connects the grease introduction hole to an air exhaust port. The air mixed in with the grease is then expelled from the air exhaust port. When the air detection sensor no longer detects air, the controller switches the switching valve, returns the spool to its original position, and discharges grease from the grease discharge port. The lubricant supply device detects and removes air that is mixed in with the grease just before the grease is introduced into the lubricated parts of the machine, and therefore can remove the air more reliably.
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