Impeller with rotor blades for centrifugal pump
First Claim
1. Impeller for a centrifugal pump, the impeller comprising:
- a rotor;
a shaft shield connected to the rotor and having an axial supply;
a suction shield connected to the rotor and axially set apart from the shaft shield; and
a plurality of blades between the shaft shield and suction shield and connected to the rotor;
each blade comprising a leading edge and a trailing edge connecting between the shaft shield and the suction shield and a suction side and a pressure side, wherein each blade cross-section is thicker near the leading edge on the suction and pressure sides, and tapers to a thinner cross-section near the trailing edge, and each blade connects to the suction shield at the leading edge with an extensive connecting fillet providing curvature toward the suction shield along the leading edge.
1 Assignment
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Accused Products
Abstract
An impeller for a centrifugal pump comprises a rotor; a shaft shield connected to the rotor and having an axial supply; a suction shield connected to the rotor and axially set apart from the shaft shield; and a plurality of blades between the shaft shield and suction shield and connected to the rotor. Each blade comprises a leading edge and a trailing edge connecting between the shaft shield and the suction shield and a suction side and a pressure side, wherein each blade cross-section is thicker near the leading edge on the suction and pressure sides, and tapers to a thinner cross-section near the trailing edge. Each blade connects to the suction shield at the leading edge with an extensive fillet providing curvature toward the suction shield along the leading edge.
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Citations
20 Claims
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1. Impeller for a centrifugal pump, the impeller comprising:
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a rotor; a shaft shield connected to the rotor and having an axial supply; a suction shield connected to the rotor and axially set apart from the shaft shield; and a plurality of blades between the shaft shield and suction shield and connected to the rotor; each blade comprising a leading edge and a trailing edge connecting between the shaft shield and the suction shield and a suction side and a pressure side, wherein each blade cross-section is thicker near the leading edge on the suction and pressure sides, and tapers to a thinner cross-section near the trailing edge, and each blade connects to the suction shield at the leading edge with an extensive connecting fillet providing curvature toward the suction shield along the leading edge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of modifying an original blade for a centrifugal pump, the method comprising:
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adding material to the original blade at and near the leading edge to the suction and pressure sides of the blade; and tapering the added material in a direction toward the trailing edge. - View Dependent Claims (19, 20)
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Specification