▎ 摘　　要

NOVELTY - The utility model claims a reaction furnace for preparing graphene, comprising a reaction furnace, two sides of the reaction furnace are fixedly connected with a connecting port, the top part and the bottom part of the connecting port are provided with a clamping block. The utility model through the connecting sleeve is sleeved on the surface of the connecting port, after the sleeve is rotated, the rotating rod drives the supporting block to move towards the centre, the supporting block drives the clamping block to move towards the centre, the clamping block pushes the baffle block to move inwards while moving, the baffle block drives the moving block to move inwards, after moving to the fixed position, the elastic force of the spring drives the moving block and the baffle rebound, the baffle block is clamped in the clamping block to limit the clamping block, so it has the advantages of convenient installation, it solves the problem that most of the connecting part of the existing reaction furnace is fixed by the bolt, This results in inconvenience when the user needs to open the joint to check the inside of the reaction furnace, which reduces the practical performance of the reaction furnace.