Sealed silicone rubber mixing device

The utility model discloses a sealed silicon rubber mixing device and relates to the field of mixing devices. The device comprises an internal mixer main body and a mixing drum arranged at the upper part of the internal mixer main body, a side frame is arranged at the upper part of the internal mixer main body, a sealing plate and an air cylinder are arranged at the side frame, and the sealing plate is inserted into the mixing drum through the air cylinder. According to the sealed silicone rubber mixing device, the air bag is arranged on the outer periphery of the upper surface of the sealing plate, and the air bag can be inflated by pressing a pressing head arranged at an inflation pipe of the air bag, so that the expanded air bag is filled and plugged at the joint of the sealing plate and the mixing cylinder; the influence on the sealing performance of the mixing barrel in the processing process due to a gap generated by abrasion between the sealing plate and the mixing barrel is avoided. 本实用新型公开一种密封式硅橡胶混炼装