Component sealing structure of crushing knife of double cone dryer

The invention discloses a component sealing structure of a crushing knife of a double cone dryer. The component sealing structure of the crushing knife of the double cone dryer comprises a speed reduction motor, an outer pack, a connecting ring, a jacket, an inner container, a rotating shaft, a shaft sleeve, a bearing, a shaft seal and a crushing knife, wherein the speed reduction motor is arranged on a shell of the double cone dryer; the shaft sleeve with the upper end thereof connected with the shell of the double cone dryer is inserted into the double cone dryer; the shaft sleeve is internally provided with the bearing and the shaft seal; the shaft seal is fixed below the bearing; the shaft seal comprises a shaft seal base, a sealing lip, a sealing ring and a backing plate; the upper end of the rotating shaft is connected with the speed reduction motor while the crushing knife sleeves the lower end thereof; the outer pack is connected with the shaft sleeve for packing components of the crushing knife; the inner container with one end thereof connected with the shaft sleeve and the other end thereof connected with the outer pack is located in the outer pack; the inner container is provided with the connecting ring; one end of the jacket is connected with the connecting ring while the other end thereof is connected with the outer pack. The component sealing structure of the crushing knife of the double cone dryer efficiently solves the problem that stuffing powder slag falls into a revolving drum to pollute a material therein as the components of the crushing knife of an existing dryer is sealed by using the stuffing, and also can avoid seizing phenomenon of mechanisms in a high-speed and high-temperature crushing process.