Impeller airlock

The utility model discloses an impeller airlock comprising a housing, an end cover and an impeller rotor. The impeller rotor is disposed in the housing. Impeller rotary shafts at two ends of the impeller rotor are connected with the end covers fixed at two ends of the housing, through mounted spherical bearings, so that the impeller rotor is supported. Each mounted spherical bearing comprises a bearing block having an inner spherical surface; the outside of a rolling bearing is an outer spherical surface matching with the inner spherical surface; the bearing blocks are fixedly connected with the end covers through fastening screws; the rolling bearings and the bearing blocks can be spherically matched to allow automatic centering, and accumulated errors caused during machining and assembly of the impeller rotor, the end covers and the housing are effectively eliminated. The impeller airlock has the advantages of simple structure and ease of demounting, mounting and maintenance; the impeller airlock is widely