Partitionable automatic blackboard eraser capable of dividing regions

The utility model relates to a partitionable automatic blackboard eraser, which belongs to the field of teaching articles. The partitionable automatic blackboard eraser consists of a rack, a guide rail, a moving device and an erasing device, wherein the moving device comprises a support, a gear motor, a screw rod motor, a transmission gear, a transmission screw rod, a shifting rod, a traction electromagnet A and a traction electromagnet B, the top part of the support is provided with the transmission gear through the gear motor, the support between the transmission gear and a guide rail sliding block is movably provided with the shifting rod through a sliding hole, one side of the shifting rod is provided with the transmission screw rod through the screw rod motor, the transmission screw rod is provided with a screw rod nut through an installation base, and one side of the transmission screw rod is provided with the erasing device. According to the partitionable automatic blackboard eraser disclosed by the ut