Mounting for centrifugal pump rotor on shaft - uses flexible locking ring which exerts radial force on shoulder of rotor

摘要

The rotor (1) of a centrifugal pump is mounted on the shaft (2) by a nut (8) and locking ring (5). The locking ring has a threaded cylindrical portion (10) with a thin flange (9). The elasticity of this flange is increased by a number of equally spaced radial slots. When the nut (8) is screwed so that it abuts the profiled ring (12) the locking ring is forced against the rotor causing the flange to deflect and exert a radial force against the shoulder (14). The axial force also causes the rear locking ring to deflect in a similar manner.