▎ 摘　　要

NOVELTY - The utility model claims a circulating air structure for nanometre graphene, comprising a dryer main body and a fan main body, the output end of the fan main body is fixedly connected with a blast pipe, one end of the air supply pipe is fixedly connected with the upper end of the right side wall of the dryer main body, the lower end of the left side wall of the dryer main body is fixedly connected with an air return pipe, one end of the air return pipe is fixedly connected with the input end of the fan main body, the lower end of the outer wall of the air return pipe is fixedly installed with a fixing box. The utility model adopts said structure, the fan main body can send the wind to the inner part of the dryer main body through the blast pipe, the dryer main body returns the waste gas to the fan main body through the air return pipe, forming a circulating air structure, filtering the waste gas by inserting the filter box in the fixing box, and intercepting the powder material, collecting, avoiding the powder material entering the fan main body or the inner part of the drying machine main body through the return air pipe, causing the fan main body or the drying machine main body to be damage