▎ 摘　　要

NOVELTY - The utility model claims a gas backflow preventing device for graphene carbon fibre production, belonging to the graphene carbon fibre production device technology field, comprising a bracket, the top part of the bracket is provided with a water storage tank, one side of the water storage tank is provided with a Tesla valve, the inner part of the water storage tank is provided with a heating pipe, the other side of the water storage tank is provided with a filter tank, the inner part of the filter tank is provided with a plurality of filter blocks, the other side of the filter tank is provided with an exhaust pipe. The utility model is set by the Tesla valve, it can effectively prevent the discharged air flow reflowing again, it also can accelerate the exhaust of the air flow, through the set of the water storage tank and the heating pipe, it can reuse the waste gas, it also can cool the waste gas, through the filter box, the filter block and the exhaust pipe are set, it can filter the exhaust gas, and then discharge through the exhaust pipe.