▎ 摘　　要

NOVELTY - The utility model relates to the technical field of purifying device, specifically to a combined waste gas negative ion graphene comprising: purifying device main body, one side of the purifying device main body is connected with a air inlet pipe, the inner wall of the air inlet pipe is fixedly connected with a filter screen; dust removing structure, the dust removing structure is set in the inside of the air inlet pipe screen far away from one side of the purifying device main body, the dust removing structure is used for reducing the blockage of the filter screen; by setting the dust removing structure, under the action of the dust removing structure, the driving blade is driven to rotate by the thrust of the air flow when the waste gas is introduced, and the first transmission wheel is arranged on the rotating shaft, the common action of the second transmission wheel and the first transmission belt drives the reciprocating screw to rotate, so as to drive the connecting plate to make the hairbrush to move back and forth, in the process, it is capable of cleaning the surface of the filter screen, reducing the filter screen surface caused by impurity dust blockage caused by the ventilation effect is reduced. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) the combined waste gas negative ion graphene to claim; (2) the negative ion graphene gas purifying device.