Centrifugal pump
AssigneeGrundfos A/S
InventorsSteffen Madsen, Peter Lindberg
Life of this patent
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Abstract
A centrifugal pump wherein a threaded ring is secured in its position by way of a pressure body which presses it against the axial abutment of a pump shaft and which is screwed axially to the end of the pump shaft. The threaded ring is seated loosely on the pump shaft and by a thread which is provided in a front hub region of the pump impeller and into which the thread of the threaded ring is screwed.
Claims5
A one-stage centrifugal pump on whose pump shaft provided in the pump housing there is fastened a pump impeller which on the front side is free of a cover disk, wherein the pump shaft is provided with an axial abutment and a setting means which bears on this and which on the other hand engages on the pump impeller in order to set the sealing clearance width between the blades of the pump impeller and the wall region of the pump housing which lies opposite these blades, wherein the setting means is formed by a threaded ring seated loosely on the pump shaft and by a thread which is provided in the front hub region of the pump impeller and into which the thread of the threaded ring is screwed.
Dependencies are inferred from the claim text.