Intelligent oil mist prevention device

The utility model provides an intelligent oil mist prevention device which comprises a rotating shaft and an annular sealing body installed on the peripheral side of the rotating shaft, an oil groove is formed in the axial inner side of the sealing body, and a sealing structure is arranged on the inner ring side, close to the rotating shaft, of the sealing body. An annular outer cover is fixed to the axial outer side of the sealing body, the outer cover is connected with the peripheral side of the rotating shaft through an opening adjuster, and therefore a sealing cavity is formed between the outer cover and the sealing body. A plurality of blades are evenly fixed to the positions, corresponding to the sealing cavity, of the peripheral side of the rotating shaft, the blades can form air pressure along with rotation of the rotating shaft, the air pressure can suck air into the sealing cavity from the position of the opening adjuster, and positive pressure is formed in the sealing cavity. And an automatic press