公开(公告)号：US20180363659A1

公开(公告)日：2018-12-20

申请号：US16060215

申请日：2016-12-07

Applicant: GRUNDFOS HOLDING A/S

Inventor： Steen MIKKELSEN ,  Niels DUE JENSEN ,  Brian LUNDSTED POULSEN

IPC: F04D1/06 ,  F04D29/42 ,  F04D29/62

Abstract: A multistage centrifugal pump with a foot part (2) and with a head part (9), between which pump stages are integrated. The head part (9) and the foot part (2) are connected via tie-rods (11) which with one end are fastened on the head part (9) and with the other end are fastened on the foot part (2). The tie-rods (11) at one end comprise a thread (14), with which they are tightened on the head part (9). The tie-rods (11) are formed from sheet metal and at the other end comprise a recess (16), with which recess they are positively fixed on the foot part (2), at least one the tensile direction 22