Patent · US Expired

Centrifugal pump for the delivery of hot media

US5795129A · kind A · utility

3Cited by

5References

8Claims

0Family size

Assignee

KSB Aktiengesellschaft · DE

Inventors

Jorg Urban · Ludwigshafen, DE
Hans-Dieter Strum · Gerolsheim, DE
Waldemar Schwartz · Heßheim, DE

Key dates

Filing date	May 20, 1996
Grant date	Aug 18, 1998
Priority date	—
Expiry date	May 20, 2016

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05C2225/00
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A floating-ring seal in a seal chamber is disposed on a pump casing at said end of a housing on the side remote from said pump. The seal chamber is isolated from the pump side by a contact seal element that is seated close to a rotating pump part. The seal chamber has a cooling circuit that is preferably filled with a fluid that is identical to the pumping medium. The seal chamber is separated from pumping medium by the seal element. A pressure compensation device is disposed in the region of the seal element in case fluid leaks from the seal chamber. The pressure compensation device fills the seal chamber with pumping medium to compensate for the leaked fluid.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.