Oil mist machine filters are mainly used in CNC machine tools to solve workshop environmental problems such as oil mist, water mist or dust during processing. Generally used in CNC machining centers, cleaning machines, die-casting machines, CNC lathes and other processing equipment.     The state of the oil mist, the average mesh and fiber diameter of the filter material, and the thickness of the filter layer will all affect the separation effect. By comparing the oil mist filtration efficiency and flow pressure difference characteristics of different ultra-fine glass fiber filter papers, the results show that When the filter layer thickness is 5 mm, the 9 μm ultrafine fiber filter paper has a good separation effect on oil mist.     Reference for types and selection of oil mist machine filter elements: Comparison between centrifugal and electrostatic types: Centrifugal oil mist separators (oil mist separation filters) have a wider range of applications, and the requirements for multi-workshop environments a