Sealing device for shaft end of chemical centrifugal pump

The utility model relates to a sealing device for a shaft end of a chemical centrifugal pump. The sealing device comprises a shaft, a lock nut and an impeller; an axial sealing device is arranged among the lock nut, the shaft and the impeller; and a radial sealing device is also arranged among the lock nut, the shaft and the impeller. Due to the combination of the axial sealing device and the radial sealing device, the sealing device of the utility model changes the unidirectional face seal into a bidirectional linear seal which is more effective and practical, thereby solving the sealing problem, and slowing down the seal failure of the equipment caused by temperature differences.