Ksb Aktiengesellschaft

Bernhard Brecht

Uwe Bruhns

Wolfgang Kochanowski

Christoph Jaeger

Harald Hartmann

Wiltrud Knoebl

Mogens Ellegaard

Stefan Flak

Sven Baumgarten

Ralf Graber

Stephan Bross

Juergen Schill

Frank Sehr

Juergen Kaufmann

Joerg Urban

Stephan Scharpf

Stephen Bross

Bao Wang

A centrifugal pump for delivering hot fluids, having a contacting shaft seal, a seal housing () for the shaft seal (), and a return line () for a partial flow of the delivered fluid, in which no delivered fluid is discharged out of the seal housing (); a separate housing cover () is disposed between the seal housing () and the pump housing (); there is a contact surface which minimizes heat transfer between the seal housing () and the housing cover (); and the return line () is connected to the housing cover () and/or to the pump housing ().

Sealing system for centrifugal pumps

An engine pump assembly (), particularly a main coolant pump, composed of a housing () of a rotary pump with delivery elements arranged therein, a heat barrier part (), a motor part () which drives the delivery elements, and force transmitting connecting elements () between a housing flange () of the housing () of the rotary pump and a flange () of the engine part (). For faster and more reliable assembly and disassembly, the housing flange () is provided with receptacles () over at least half of its periphery for the arrangement of screw heads () of the connecting elements (), which screw heads () are held in a bayonet-like manner in the receptacles ().

Main coolant pump

An electric motor () having a coaxially associated pump () for a coolant circuit, in particular in a system with temperature transfer and/or heat transfer, in which a shaft assembly () transmits a torque from the electric motor () to at least one impeller () arranged in the pump housing () within housing parts () in the form of a hermetically sealed pressure enclosure, and a flywheel () is arranged between the electric motor () and the pump housing (). All of the rotating parts are arranged within a hermetically sealed motor/pump unit, and the motor/pump unit is filled with fluid. The flywheel () comprises a flywheel body () made from a high-strength material having a large number of cavities () with inserts () formed of or containing a heavy metal having a density greater than 11.0 kg/dmarranged in the cavities.

Electric motor having a coaxially associated pump

A valve for switching over liquid paths, particularly for pressure exchanger installations with tubular pressure exchanger chambers () through which an alternating flow occurs, in which a rotatable control element () having a plurality of flow paths is mounted in a housing (), which in turn comprises a plurality of connection opening () connected to a first pipe system and to an end of at least one pressure exchanger. Another end of the pressure exchanger is connected to a second pipe system through a valve. A motorized drive shaft () rotates the control element so as to alternately connect the control element flow paths to openings inside housing (). Oncoming flow to the control element may come from an axial direction or from a radial direction, and outgoing flow from the control element occurs in the axial direction.

Valve unit for pressure exchanger installations

A multistage centrifugal pump in which each stage includes a one-piece or multi-piece housing and an impeller disposed therein. The pump stages are arranged between an inlet end member and an outlet end member and retained therebetween by connectors so as to be connected to a flow-guiding system. All impellers are positioned on a single pump shaft that is supported by at least two pump bearings. One end of the pump shaft is provided with a device for receiving a connector of a drive unit, and outer support members are disposed at mounting points adjacent the end members in order to mount the centrifugal pump in its installation location. The pump shaft () is supported by two two pump bearings (), with the maximum distance (L) between confronting sides of the two pump bearings () being less than or equal to a minimum structural stage height (L) multiplied by the number of pump stages (-) minus 1.

Multistage centrifugal pump

A valve for switching fluid paths, particularly for pressure exchanger installations with tubular chambers through which fluid flows in an alternating manner, including a rotatable closing element () provided with a motorized drive shaft () and arranged inside a housing () having a plurality of connections () for connecting lines leading to a pipe system and to a respective end of at least one pressure exchanger. Another end of each pressure exchanger is connected through a valve arrangement to a second pipe system. A splitter () provided with a plurality of overflow paths () is arranged inside the housing (); mouths of the overflow paths are located on two axial end faces () and on the circumference of the splitter (), and a rotatable, disk-shaped control element () is arranged in a sealing manner at each end face of the splitter ().

Flow-reversing valve

A balancing arrangement which is used to relieve or take up axial thrust in a multistage centrifugal pump, having a balancing device with at least one axial gap ( ) and at least one radial gap ( ) and in which a balancing flow is conducted through the gaps, and having an axial bearing which receives remaining axial thrust. Associated with the axial bearing is a cardanic ring ( ) which serves to offset alignment errors. Highly reliable operation with only low leakage losses is achieved by configuring the balancing device such that a residual thrust in the direction of the suction side of the pump exists in all operating conditons and the cardanic ring is designed such that it is elastically deformed by the residual thrust and has a spring constant such that the axial gap (s) will close from a maximum width position when the pump is at rest to a minimum width position during operation while still avoiding contact between the surfaces which define the axial gap.

Growing community of inventors

Neustadt/Weinstrasse, Germany

Bernhard Brecht