Dustproof blackboard eraser

The utility model relates to a dustproof blackboard eraser which belongs to the field of teaching aids and comprises guide rails, a wiping cylinder, a dustproof cover and drive devices, wherein the upper end and the lower end of a blackboard are provided with the guide rail, the drive devices are arranged on the outer sides of the guide rails, the wiping cylinder is arranged between the two drive devices, the dustproof cover is arranged on the wiping cylinder, a dust collecting box is arranged inside the dustproof cover, and a control switch is arranged on a shell of the drive device at the bottom end of the wiping cylinder and is connected with the drive device through a lead. According to the dustproof blackboard eraser, the drive devices drive walking wheels to walk along the guide rails, and drive the wiping cylinder to rotate, thus writings on the blackboard are wiped, and dropping-off chalk dust drops into the dust collecting box without scattering and drifting under the action of the dust collecting cover, and the problem that the chalk dust scatters and drifts to seriously influence the health of teachers and students when the writings are wiped by using the traditional blackboard eraser is solved. The dustproof blackboard eraser has the advantages of simple structure, high wiping efficiency and good dustproof effect, and is especially suitable for installation and use in classrooms of middle and primary schools.