Uninterrupted power supply (UPS) box with good dustproof performance

The utility model relates to the technical field of power supply boxes, and discloses a UPS power supply box with good dustproof performance, which comprises a box body, the bottom of the inner wall of the box body is provided with an air vent, the bottom of the box body is fixedly provided with a dustproof frame, a dustproof net is fixedly arranged in the dustproof frame, the bottom of the inner wall of the box body is fixedly provided with a motor, and the motor is fixedly provided with a power supply. The bottom of an output shaft of the motor is fixedly connected with a rotating shaft with the bottom extending to the position below the box body, a driving bevel gear is fixedly installed at the bottom of the rotating shaft, a rear side gear of the rotating shaft is meshed with a driven bevel gear, and a first supporting plate is fixedly installed at the bottom of the box body. A threaded rod with the rear side rotationally installed on the front side of the first supporting plate is fixedly installed on th