公开(公告)号：US20170146029A1

公开(公告)日：2017-05-25

申请号：US15355800

申请日：2016-11-18

Applicant: GRUNDFOS HOLDING A/S

Inventor： Erik Bundesen SVARRE ,  John Frigård NIELSEN ,  Finn Ulrich STORGAARD ,  Iraj BABAZADEH

IPC: F04D29/62 ,  F04D13/02 ,  F04D17/08 ,  F04D25/02 ,  F04D29/10 ,  F04D29/053 ,  F04D29/046 ,  F04D29/056 ,  F04D29/42 ,  F04D1/06 ,  F04D29/043

Abstract: A multi-stage centrifugal pump includes a pump casing, in which a shaft (8) carrying an impeller is rotatably arranged. The pump casing has a pump casing foot part (2) that includes a reversibly closable maintenance opening (60), via which a bearing and/or seal (20, 25), which is arranged at a shaft end within the pump casing, is accessible and exchangeable.