▎ 摘　　要

NOVELTY - The utility model claims a graphene preparing device technology field, especially relates to a reaction chamber and scale preparation device of CVD deposited graphene. the reaction chamber is a cavity with an opening at the bottom, and the two opposite side plates of the reaction chamber are provided with a groove structure, the groove structure is covered on the upper part of the conveyor belt assembly. A groove structure is set on the side plate opposite to the reaction chamber, which can make the reaction chamber cross on the conveyor belt assembly. In this way, the gap between the conveyor belt assembly and the reaction chamber can be reduced. so as to reduce the loss of heat in the reaction chamber, and the conveying belt assembly drives the movement of the substrate, the reaction chamber can deposit graphene on scale on the substrate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a scale preparation device of CVD deposited graphene.