Drive rotor for a magnetically coupled pump having tolerance rings
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United States of America Patent
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Jun 25, 2019
Grant Date -
Apr 28, 2016
app pub date -
Apr 29, 2014
filing date -
May 8, 2013
priority date (Note) -
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Abstract
A magnetic clutch pump arrangement is provided. The pump arrangement includes a pump housing containing an impeller shaft, a containment shell sealing an enclosed chamber within the housing, an impeller mounted on the impeller shaft, an inner rotor mounted on the other end of the impeller shaft, a drive motor, a drive shaft drivable by the drive motor, and an outer rotor outside of the enclosed chamber, mounted on the drive shaft, which magnetically interacts with the inner rotor. The external rotor has a hub with a through-bore having an interior surface which includes an axial groove extending parallel to the axis of rotation which cooperates with a feather key and a drive shaft key groove to rotationally secure the hub to the drive shaft. At least one radially circumferential first groove and at least one radially circumferential second groove in the hub interior surface receive tolerance rings.
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