Shaft bearing device with a lifting device
AssigneeSulzer Management AG
InventorsAndreas Wild, Nicolas Lagas
Life of this patent
Estimating the term…
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;
- and
- a pressure ring supporting the spring at the bearing housing of the antifriction bearing, the pressure ring being disposed between the spring and the antifriction bearing such that the spring force is capable of acting on the antifriction bearing via the pressure ring.
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;
- and
- a pressure ring supporting the spring at the bearing housing of the antifriction bearing, the pressure ring being disposed between the spring and the antifriction bearing such that the spring force is capable of acting on the antifriction bearing via the pressure ring.
Dependencies are inferred from the claim text.