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US 2022/0316490 A1Published application
Pump Shaft for a Multi-Stage Pump
AssigneeKSB SE & Co. KGaA
InventorsGerhard GROSS, Kai MOLITOR, Sophia SERGI
Life of this patent
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Abstract
A pump shaft for a multi-stage pump, in particular a centrifugal pump, includes a peripheral groove region for the engagement of a relief device in order to introduce a force acting in the axial direction of the pump shaft. The groove region includes a plurality of grooves which are spaced apart in the axial direction.
Claims19
1-15. (canceled)
A pump shaft for a multi-stage pump, comprising:
- a pump shaft having a circumferential groove region configured to receive and cooperate with a load-relieving device to impart a force acting in the axial direction of the pump shaft to the pump shaft,
- wherein the groove region in an axial direction of the pump shaft includes a plurality of grooves spaced apart from one another in the axial direction.
The pump shaft as claimed in claim 25, wherein
- the at least one other tooth base with the smaller radius is axially separated from the adjacent outer edge of the groove region and the outer edge at the axially opposite outer edge of the grove region by at least two tooth bases with larger radii than the smaller radius.
A pump, comprising:
- a pump shaft having a circumferential groove region;
- and
- a load-relieving device,
- wherein the circumferential groove region is configured to receive and cooperate with the load-relieving device to impart a force acting in the axial direction of the pump shaft to the pump shaft, and
- the groove region in an axial direction of the pump shaft includes a plurality of grooves spaced apart from one another in the axial direction.
2 more elements
Dependencies are inferred from the claim text.