MULTISTAGE CENTRIFUGAL PUMP WITH AN AXIAL THRUST BALANCING PISTON, THE PRESSURE AND SUCTION SIDES OF WHICH ARE SEPARATED BY A MECHANICAL SEAL

摘要

In the multi-stage centrifugal pump (1), the impellers (9) are rotatably mounted on a common shaft (8) within a pump housing (2-4), one end of the shaft (8) is led out of the housing for connection to a drive motor another shaft end (15) is rotatably mounted in the pump housing (2-4), wherein the within the pump housing (2-4) mounted shaft end (15) is acted upon by a counter force which is generated by pressurizing via a line connection to a pressure side of the pump , An axial seal (11) is provided on the shaft end (15) mounted within the pump housing (2 - 4), the rotating part of which is axially movably mounted on the shaft end and its non - rotating part inside the pump housing (2 - 4), sealing means between the shaft end Pump housing and the axially movable mounted part are provided.