▎ 摘　　要

NOVELTY - The utility model belongs to the technical field of fast freezing device, especially to a fast freezing device for graphene 3 D printer, comprising an outer shell, two sides of the outer shell is provided with a groove; the bottom surface of the groove is provided with a spring; the upper part of the spring is provided with a pressure plate; one end of the spring is embedded into the bottom of the groove; the other end is embedded in the pressure plate; the utility model is used in the process of using the freezing device for a long time; the refrigeration effect of the refrigeration piece may be not good; it is necessary to quickly change the refrigeration piece; the connecting rod in the groove on one side surface of the shell body is pulled outwards to separate the connecting rod and the limiting block; then the placing plate and the heat conducting silicone grease layer are removed; it is more convenient to replace the refrigerating sheet with bad refrigerating effect; then the heat conducting silicone grease layer is fixed at the original position under the driving of the connecting rod; so as to solve the problem that the replacing process of the refrigeration piece is fussy.