Blackboard eraser placing rack

The utility model aims at providing a blackboard eraser placing frame which comprises a shell, a blackboard eraser placing cavity matched with a blackboard eraser in shape and size is formed in the top of the shell, a sliding rail is arranged on the side wall of the shell, a dust cleaning brush is arranged in the sliding rail in a sliding fit mode, and a sliding driving end is arranged at one end of the dust cleaning brush. The dust removal brush makes contact with a wiping component of the blackboard eraser, a dust collection box with an opening is arranged at the bottom of the dust removal brush, and the dust collection box is communicated with the blackboard eraser containing cavity. After the blackboard eraser erases chalk characters, the chalk characters are placed in the blackboard eraser containing cavity, the sliding driving end is pushed to drive the dust removal brush to conduct dust removal work on the erasing component of the blackboard eraser, meanwhile, dust automatically falls into the dust col