Laufradsitz mit einem Führungszapfen für eine Pumpe

Details

Veröffentlichungs-Nr.

EP3988794

Aktenzeichen

EP20203825

Anmeldetag

26. Oktober 2020

Veröffentlichung

31. Juli 2024

Erteilung

31. Juli 2024

Rechtsraum

EP

IPC

F04D7/04F04D29/42F04D29/70

Abstract

The invention relates to an impeller seat (5) for a pump, said impeller seat (5) having an inlet wall, wherein the impeller seat (5) has an inlet radius measured from an axially extending centre axis (A) to the circular intersection (11) between the inlet wall and the upper surface (12) of the impeller seat (5), said impeller seat (5) comprising a guide pin (13) connected to and extending radially inwards from said inlet wall, the guide pin (13) having a tip radius measured from the axially extending centre axis (A) to the radially innermost part of the guide pin (13), wherein an imaginary 40%-circle (25) is offset radially inwards from said circular intersection (11) forty percent of the difference between said inlet radius and said tip radius. The impeller seat (5) is characterized in the guide pin (13) comprises a leading edge (26) configured for scraping off pollutants from an impeller of the pump (1), wherein the guide pin (13), at least between the inlet wall (10) and the 40%-circle (), comprises a pre-leading edge (31) located upstream the leading edge (26) of the guide pin (13), seen in the direction of rotation of the pump (1) and seen in the axial direction. The invention also relates to a pump comprising such an impeller seat.

Anmelder

Firma

Xylem Europe GmbH

Land

🇨🇭 Schweiz

Fachgebiete