Silicone oil emulsifying kettle manhole sealing device

The utility model discloses a manhole opening sealing device of a silicone oil emulsifying kettle. The emulsifying kettle comprises an emulsifying kettle body, and a manhole pipe and a sealing cover which are connected to the emulsifying kettle body, a manhole opening is formed in the manhole pipe; the sealing cover is parallel to the end surface of the manhole pipe; the sealing cover is rotationally connected relative to the emulsifying kettle body so as to open or rotate the manhole; a mounting ring groove is formed in the end surface of the manhole pipe; a sealing ring is mounted in the mounting ring groove; the sealing ring is connected with one or more driving devices; the driving device can control the position of the sealing ring in the mounting ring groove; the driving device comprises a driving cam, the driving cam is mounted in the mounting ring groove and rotationally connected with the manhole pipe, the outer wall of the driving cam abuts against the side face, away from the sealing cover, of the