Machine tool cooling liquid oil stain separation system

The utility model provides a machine tool cooling liquid oil stain separation system in order to solve the problem that an inductor cannot give an early warning correctly due to the fact that oil stains are attached to the cooling liquid depth inductor. The oil stain separation system for the machine tool cooling liquid comprises an isolation hood provided with a cooling liquid flow channel; the oil stain separation device, the filter screen and the cooling liquid depth sensor are sequentially arranged in the cooling liquid flow channel; the oil-proof cover is fixedly arranged on the peripheral side of the cooling liquid depth sensor in a sleeving mode, the sensing end of the cooling liquid depth sensor is exposed out of the end of the oil-proof cover and makes contact with cooling liquid, or the sensing end of the cooling liquid depth sensor is exposed out of a water flowing groove formed in the oil-proof cover and makes contact with the cooling liquid. 为解决因油污附着在冷却液深度感应器上导致感应器不能正确预警的问题，本实用新型提供了一种机床冷却液油污分离系统。