Ball screw device with internal circulation cooling function

The utility model relates to the technical field of ball screws, in particular to an internal circulation cooling ball screw device which comprises a device body, the device body comprises a ball screw, a nut is installed on the outer side of the ball screw, conveying hoppers are installed on the two sides of the top end of the nut in an inserted mode respectively, and inserting blocks are fixedly installed at one ends of the conveying hoppers respectively. A cooling mechanism is arranged at the bottom end of the nut and comprises a fixing box, and the fixing box is fixedly installed at the bottom end of the nut. The cooling mechanism is arranged, and the miniature fan is used for blowing air, so that the internal part of the nut and the ball screw can be cooled, the cooling effect is achieved, the phenomenon of friction heating of the ball screw is prevented, the service life of the ball screw and the nut is prolonged, and the service life of the ball screw is prolonged. And meanwhile, dust in wind can be fi