Zentrifugalpumpengehäuse

Details

Veröffentlichungs-Nr.

EP4212736

Aktenzeichen

EP22151564

Anmeldetag

14. Januar 2022

Veröffentlichung

19. Juli 2023

Rechtsraum

EP

IPC

F04D29/12F16J15/34

Abstract

A centrifugal pump housing (4) configured to accommodate an impeller (5) mounted on an axially extending drive shaft (6) operably connected to a motor (3) for rotation of the impeller (5). The pump housing (4) comprises a rear housing part (7) having a drive shaft opening (16), a front housing part (8) attachable to the rear housing part (7) for forming a pump chamber, and a sealing arrangement (17) for sealing the drive shaft opening (16). The sealing arrangement (17) comprises a stationary annular seal element (24) rotationally locked to the rear housing part (7) or to a sealing retainer (26) mounted in the rear housing part (7), wherein the stationary annular seal element (24) has a stationary plane seal surface (27) facing forwards in the axial direction, and a rotatable annular seal element (25) configured to be rotationally locked to the impeller (5) or to the drive shaft (6), wherein the rotatable annular seal element (25) has a rotatable plane seal surface (28) facing rearwards in the axial direction and configured to sealingly abut against the stationary plane seal surface (27). The pump housing (4) further comprises a plurality of stationary protrusions (29) integrally formed in the rear housing part (7) or in the sealing retainer (26), wherein the plurality of stationary protrusions (29) are located in or adjacent the drive shaft opening (16) of the rear housing part (7) for increasing the turbulence of a flow of product fluid in the pump housing (4) adjacent to the sealing arrangement (17).

Anmelder

Firma

Alfa Laval Corporate AB

Land

🇸🇪 Schweden

Fachgebiete