Magnetically coupled rotary pump
AssigneeCP Pumpen AG
InventorsPeter Wirz, Thomas Folsche
Life of this patent
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Abstract
A magnetically coupled rotary pump has, in a pump chamber, a pump rotor mounted by a single slide bearing on a stationary axis of a pump bearing support. The slide bearing is formed on one side by a metal sleeve shrunk over the bearing sleeve, said sleeve being connected by means of a weld with the pump rotor, and on the other side by a bushing mounted on the pump bearing support or a one-piece slide bearing surface formed correspondingly directly on pump bearing support. With this design of the bearing, dead spaces and gaps are avoided, enabling complete cleaning and sterilization of the pump chamber with complete draining of the pump chamber. A pump of this kind is especially suitable for use in sterile applications.
Claims16
A rotary pump, comprising:
- a can motor housing sealing a pump chamber on a drive side from a pumped medium, a motor-driven permanent magnet rotor being located on one side of the can motor housing and another permanent magnet rotor, connected with a pump rotor, being located on the other side, the can motor housing being connected only at an edge area with pump housing parts, the pump rotor, on a side facing away from the can motor housing in a hub area facing an intake channel, being rotatably mounted on a fixed axis of a pump bearing support, which support is located in an intake chamber and is permanently connected with a housing of the rotary pump, and
- wherein a bearing bushing is connected with the pump rotor via a sleeve, said sleeve being made of metal shrunk over a bearing bushing and, in cooperation with a bearing axis located on the pump bearing support, forms one single slide bearing of the pump rotor.
Dependencies are inferred from the claim text.