| 摘要 |
The centrifugal pump stage comprises an impeller unit (10) having an axial hub (1 1 ) suitable to be mounted of the motor shaft (2) of the pump. A diffuser unit (20) extends at a first face of the impeller unit (10) and an aspiration lid (30) associated with the diffuser unit (20) extends at a second face of the impeller unit (10). The impeller unit (10) is supported floating at the diffuser unit (20) between a first position and a second position in which the axial hub (1 1 ) is abutting against respective locking rings (4) stiffly associated with the motor shaft (2) of the centrifugal pump, in order to be rotatable together with the same shaft (2). |
