US 9,316,232 B2Granted

Rotor fastening arrangement

AssigneeKSB Aktiengesellshaft

InventorsJoachim Pahlen, Jens Ulrich Stahr

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Abstract

A rotor fastening arrangement, particularly for connecting a drive shaft and a rotor hub of a centrifugal pump assembly, having a fitting surface and at least one contact surface at the drive-shaft end. Respective ends of the drive-shaft (3) and the rotor hub (1a) are each provided with an internally threaded central hole. A fitting surface and at least one contact surface also are formed on the rotor hub (1a). An intermediate shaft (2) is provided between drive shaft (3) and rotor hub (1a) in order to connect the rotor hub and drive shaft. A fitting surface and at least one contact surface are formed respectively at both ends of the intermediate shaft (2) for alignment; at least one connecting member is provided for connecting the intermediate shaft (2) to the drive shaft (3) and the rotor hub (1a), and a seal is arranged on the intermediate shaft.

Claims11

Dependent claims

A rotor fastening arrangement for connecting a drive shaft to a rotor hub, wherein

a fitting surface and at least one contact surface are formed on a drive shaft end;
said end of the drive shaft is provided with a central bore having an internal thread;
a fitting surface and at least one contact surface are formed on the rotor hub;
the rotor hub is provided with a central bore having an internal thread;
an intermediate shaft is provided between the drive shaft and the rotor hub for connecting the rotor hub to the drive shaft;
a fitting surface and at least one contact surface are formed on each respective end of the intermediate shaft;
at least one connector is provided for connecting the intermediate shaft to the drive shaft and to the rotor hub,
a drive-side axial face seal is arranged on the intermediate shaft, and
a collar provided on the intermediate shaft biases the drive-side axial face seal against a drive casing containing the drive shaft.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/621,492Filed 17 Sep 2012 · continuation
Priority: DE 10 2010 011 69517 Mar 2010
Published: US 2013/0017074 A117 Jan 2013
Granted: 19 Apr 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

F04D 29/20
Rotors: mounting rotors on shafts
F04D 29/426
For radial or helico-centrifugal pumps: especially adapted for liquid pumps
F04D 29/588
Specially adapted for liquid pumps: cooling or heating the machine
F04D
Non-positive-displacement pumps