Paint mist filter cotton

The invention relates to the technical field of air filter cotton, in particular to paint mist filter cotton which comprises a body, the body is sequentially composed of an upper frame, a middle end and a lower frame from top to bottom, the upper frame, the middle end and the lower frame are located on the same vertical line, and a limiting assembly is installed between the upper frame and the middle frame. Filtering cotton is limited through a limiting assembly and is locked in cooperation with a positioning bolt, then an adjusting rod is manually pulled to enable a limiting rod to fall off a threaded groove in the middle end part, then splitting is achieved, and the filtering cotton on the middle end part is conveniently replaced and cleaned; the surface layer of the arranged filter cotton adopts a rhombic grid design, so that the filter surface area can be enlarged by more than one time, the wind resistance is lower, natural fibers arranged in the filter cotton have good physical properties and chemical st