Shaft bearing device with a lifting device
AssigneeSulzer Management AG
InventorsAndreas Wild, Nicolas Lagas
Life of this patent
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Abstract
A shaft bearing device for a pump includes an antifriction bearing, which can be connected to an axially displaceable pump shaft. A spring is arranged at the antifriction bearing in such a way, that a spring force can be transmitted to an outer ring of the antifriction bearing by the spring in a mounting condition of the shaft bearing device. A lifting element attached to the pump shaft and a corresponding counter element are separated from each other by the spring force in a starting state and/or in a shutdown state of the pump.
Claims14
A pump, comprising:
- an axially displaceable pump shaft;
- a shaft bearing device, the shaft bearing device including an antifriction bearing configured to be connected to the axially displaceable pump shaft, and being a radial bearing in contact with a bearing housing and configured to absorb radial forces of the pump shaft, the antifriction bearing comprising an inner ring and an outer ring, a first surface on the outer ring on a first side of the antifriction bearing transverse to an axis of the pump shaft at a first end of the antifriction bearing abuts a surface of the bearing housing when the pump is in a shutdown state and a second surface on the inner ring on a second side, opposite the first side, of the antifriction bearing transverse to the axis of the pump shaft at a second end of the antifriction bearing abuts a surface of the shaft;
- and
- a spring arranged at the antifriction bearing such that a spring force is capable of being transmitted to the antifriction bearing by the spring in a mounting condition of the shaft bearing device such that a lifting element attached to the pump shaft and a corresponding counter element are separated from each other in at least one of a starting state and a shutdown state of the pump.
A shaft bearing device for a pump, the shaft bearing device comprising:
- an antifriction bearing that is a radial bearing in contact with a bearing housing and configured to absorb radial forces of a shaft, the antifriction bearing comprising an inner ring and an outer ring;
- and
- a spring arranged at the antifriction bearing such that a spring force is capable of being transmitted to the antifriction bearing by the spring in a mounting condition of the shaft bearing device such that a lifting element and a corresponding counter element are separated from each other in at least one of a starting state and a shutdown state of the pump, a first surface on the outer ring on a first side of the antifriction bearing transverse to an axis of the shaft at a first end of the antifriction bearing abuts a surface of the bearing housing when the pump is in a shutdown state and a second surface on the inner ring on a second side, opposite the first side, of the antifriction bearing transverse to the axis of the shaft at a second end of the antifriction bearing abuts a surface of the pump shaft.
Dependencies are inferred from the claim text.