Teaching projector with good dustproof effect

The utility model discloses a teaching projector with a good dustproof effect. The projector comprises a projector body and a shielding frame arranged on the projector body. Connecting cylinders are fixedly connected to the four corners of the back of the shielding frame and located at the top and the bottom of the projector body. Fixing plates are arranged on the left side and the right side of the back of the projector body, the fixing plates and the connecting cylinders are fixedly connected through long rod bolts, a mounting box is fixedly connected to the top of the back of the shieldingframe, and a gear is rotatably connected to the bottom of an inner cavity of the mounting box. The utility model discloses a teaching projector with a good dustproof effect. The shielding frame is fixed on the projector body through the connecting cylinder, the long rod bolt and the fixing plate, installation is convenient, the motor drives the gear to rotate, the toothed plate drives the shielding plate to move, the shie