▎ 摘　　要

NOVELTY - The utility model relates to the technical field of internal mixer, especially relates to a graphene sealing device of internal mixer, comprising a flange, the flange is provided with a clamping mechanism, the flange is provided with a sealing mechanism, the sealing mechanism comprises two fixed arc-shaped sleeve, two said fixed arc-shaped sleeves are set on the upper surface of the flange, the two inner side walls of the fixed arc-shaped sleeve are provided with a limiting annular belt connected with each other, between the two fixed arc-shaped sleeves is movably installed with a movable sleeve, the side wall of the movable sleeve is fixedly installed with an annular groove, the annular groove is movably clamped in the limiting annular belt, the fixed arc sleeve is fixedly installed with a dropping pipe, the utility model through the matching of the fixed arc sleeve and the movable sleeve, the movable sleeve can better rotate in the fixed arc sleeve, at the same time, when the movable sleeve rotates, adding lubricating oil to the limiting annular belt, which can reduce the friction force in the device, improving the use effect of the device.