公开(公告)号：US11378097B2

公开(公告)日：2022-07-05

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: F04D1/06 ,  F04D29/62 ,  F04D29/42 ,  F04D29/041 ,  F04D13/02 ,  F04D17/08 ,  F04D25/02 ,  F04D29/043 ,  F04D29/046 ,  F04D29/053 ,  F04D29/056 ,  F04D29/10

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.