Filtering device for machine tool

The utility model discloses a filtering device for a machine tool, which belongs to the technical field of filtering devices and comprises a water tank arranged on the machine tool, the water tank is arranged in a grading manner and comprises a first-stage water tank and a second-stage water tank, and the first-stage water tank and the second-stage water tank are separated by a partition plate; a filter is arranged above the second-stage water tank and is used for finely filtering the cutting liquid; the first-stage water tank is obliquely arranged, a magnetic separation machine and a filtering machine are arranged above the higher inclined end of the first-stage water tank, the filtering machine is located below the magnetic separation machine and used for conducting coarse filtration on cutting liquid, and a combined pump is arranged at the lower inclined end of the first-stage water tank and communicated with a filter. And the filter is used for introducing the cutting fluid into the filter. The chip liqui