Pump for conveying a fluid
AssigneeVogelsang GmbH & Co. KG
InventorsThomas Hinners, Jürgen Bruning
Life of this patent
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Abstract
A pump for conveying a fluid includes a casing with a casing inner wall, a pump interior, an inlet opening, an outlet opening, a displacement assembly, and a radial protective element arranged in the pump interior in order to line at least one radial section of the pump interior, the radial protective element bearing against a radial section of the casing inner wall. A fastening element is provided which can be arranged in a fastening position in which the fastening element bears against an edge of the radial protective element and in the process fastens the radial protective element in the pump interior, wherein the fastening element has a longitudinal extent which extends from a first axial end of the pump interior along a recess arranged in the casing inner wall.
Claims27
A pump for conveying a fluid comprising
- a casing having a casing inner wall;
- a pump interior delimited by the casing inner wall;
- an inlet opening through which the fluid adapted to be conveyed into the pump interior;
- an outlet opening through which the fluid adapted to be conveyed out of the pump interior;
- a displacement assembly arranged in and mounted movably relative to the pump interior and adapted to cause the fluid to be conveyed along a flow direction from the inlet opening to the outlet opening;
- a radial protective element arranged in the pump interior and lining at least one radial section of the pump interior, the radial protective element bearing against a radial section of the casing inner wall;
- and
- a first fastening element arranged in a fastening position in which the first fastening element bears against an edge of the radial protective element and thereby fastens the radial protective element within the pump interior, wherein the first fastening element has a longitudinal extent extending from a first axial end of the pump interior along a recess disposed in the casing inner wall;
- wherein the first fastening element is rod-shaped and the longitudinal extent of the first fastening element is greater than a diameter of the first fastening element by at least one multiple.
A fastening element for fastening a radial protective element within a pump interior of a pump for conveying a fluid comprising:
- a casing having a casing inner wall;
- the pump interior delimited by the casing inner wall;
- an inlet opening through which the fluid is adapted to be conveyed into the pump interior;
- an outlet opening through which the fluid is adapted to be conveyed out of the pump interior;
- and
- a displacement assembly arranged in and mounted movably relative to the pump interior and adapted to cause the fluid to be conveyed along a flow direction from the inlet opening to the outlet opening;
- wherein the radial protective element is arranged in the pump interior and lines at least one radial section of the pump interior, the radial protective element bearing against a radial section of the casing inner wall;
- and
- wherein the fastening element is rod-shaped and has a substantially circular cross section with at least one notch formed by an elongate depression adapted to receive an edge of the radial protective element.
A protective element system for lining a radial section of a pump interior of a pump for conveying a fluid comprising:
- a casing having a casing inner wall;
- the pump interior delimited by the casing inner wall;
- an inlet opening through which the fluid is adapted to be conveyed into the pump interior;
- an outlet opening through which the fluid is adapted to be conveyed out of the pump interior;
- and
- a displacement assembly arranged in and mounted movably relative to the pump interior and adapted to cause the fluid to be conveyed along a flow direction from the inlet opening to the outlet opening;
- at least two fastening elements comprising a notch formed by an elongate depression along their respective longitudinal extents;
- and
- at least one radial protective element comprising two edges which run in the axial direction adapted to be received in the elongate depressions of one of the two fastening elements;
- wherein the notch formed by the elongate depression has an opening angle of less than 90° in cross section or the edges of the radial protective element have an edge angle of less than 90° in cross section, and wherein the opening angle and the edge angle are equal, whereby the edges of the radial protective element are arranged in the elongate depression to produce a form-fitting connection.
A method for fastening a radial protective element within a pump interior of a pump comprising the steps of:
- providing the pump comprising a casing with a casing inner wall, the pump interior delimited by the casing inner wall, an inlet opening through which a fluid is adapted to be conveyed into the pump interior, an outlet opening through which the fluid is adapted to be conveyed out of the pump interior, a displacement assembly arranged in the pump interior and moveably mounted relative to the pump interior and adapted to cause the fluid to be conveyed along a flow direction from the inlet opening to the outlet opening;
- arranging the radial protective element within the pump interior to line at least one radial section of the pump interior so that the radial protective element bears against a radial section of the casing inner wall;
- and
- introducing a fastening element into a recess in the casing, the recess running along the casing inner wall and extending in an axial direction running transversely to the flow direction so that the fastening element extends in the axial direction from a first axial end of the pump interior and the fastening element bears against an edge of the radial protective element;
- wherein the fastening element is rod-shaped and the longitudinal extent of the fastening element is greater than a diameter of the fastening element by at least one multiple.
Dependencies are inferred from the claim text.