公开(公告)号：US11746795B2

公开(公告)日：2023-09-05

申请号：US17353002

申请日：2021-06-21

Applicant: GRUNDFOS HOLDING A/S

Inventor： Alessandro Iacoponi ,  Riccardo Dal Canto

IPC: F04D27/00 ,  F04D1/00 ,  F04D29/22 ,  F04D29/42 ,  F04D9/02 ,  F04D15/00 ,  F04D1/06 ,  F04D9/00

CPC classification number: F04D27/008 ,  F04D1/00 ,  F04D1/06 ,  F04D9/005 ,  F04D9/02 ,  F04D15/0005 ,  F04D29/22 ,  F04D29/426

Abstract: A centrifugal pump device has at least one impeller (16), a circulation connection between a delivery side (22) of the at least one impeller (16) and a suction side (20) of the at least one impeller (16), and a valve arrangement (30, 46) in said circulation connection (44, 54). The valve arrangement (30, 46) has a first valve mode providing a pressure dependent shut-off valve (46) in the circulation connection. The valve arrangement (30, 46) allows a change between the first valve mode and at least one further valve mode. The at least one further valve mode provides at least one fixed closing degree of the circulation connection (44, 54).

公开(公告)号：US08640735B2

公开(公告)日：2014-02-04

申请号：US13654786

申请日：2012-10-18

Applicant: Grundfos Holding A/S

Inventor： Luca Casalini ,  Alessandro Iacoponi ,  Ralf Schomäcker

IPC: E03D1/00

CPC classification number: E03F5/22 ,  E03F11/00 ,  Y10T137/85978 ,  Y10T137/86035 ,  Y10T403/32459

Abstract: A waste water lifting installation has a collection container and a pump assembly. The pump assembly is fastened on a flange plate which closes an opening on the upper side of the collection container. The flange plate, on a first side edge which faces the middle region of the waste water lifting installation, is releasably fixed on the collection container with a single locking element.

Abstract translation: 废水提升装置具有收集容器和泵组件。 泵组件紧固在封闭收集容器上侧开口的法兰板上。 在面向废水提升装置的中间区域的第一侧边缘处的凸缘板通过单个锁定元件可释放地固定在收集容器上。