Dust removing device for dust removing type novel portable movable blackboard

The invention discloses a dust removing device for a dust removing type novel portable movable blackboard. The dust removing device is matched with the blackboard to be used, and comprises an eraser shaft, an eraser and two sliding rails, wherein the eraser is connected with the eraser shaft, the two sliding rails are arranged on the upper portion and the lower portion of the blackboard respectively; one face of the blackboard eraser is an eraser body, so as to wipe the blackboard, and one face, opposite to the eraser body, of the blackboard eraser is a wiping cover; the two ends of the erasershaft are provided with movable sliding wheels respectively, and the movable sliding wheels slide on the sliding rails to drive the blackboard eraser to wipe the blackboard; and the bottom of the eraser is connected with a powder ash collecting box so as to collect chalk dust generated when the blackboard is wiped. The dust collecting device is simple in structure and convenient to operate, the powder ash collecting box