Vacuum stirring machine

The utility model discloses a vacuum stirring machine which comprises a shell, a material barrel is arranged in the shell, a sealing mechanism is arranged in the shell, the sealing mechanism comprises a circular truncated cone cover, the circular truncated cone cover is fixedly connected to the top end of the inner wall of the shell, a rubber pad is attached to the inner wall of the circular truncated cone cover, and a transverse U-shaped frame is movably arranged in the shell. An inserting hole is formed in the top end of the transverse U-shaped frame, the material barrel is inserted into the inserting hole in a penetrating mode, and a lifting mechanism is arranged on the back face of the transverse U-shaped frame. According to the sealing device, the transverse U-shaped frame, the inserting hole, the circular table cover and the rubber pad are arranged, and the lifting mechanism is matched, so that the transverse U-shaped frame drives the material barrel inserted into the inserting hole to ascend, the mater