Open-type centrifugal pump with single-blade impeller

Details Open-type centrifugal pump with single-blade impeller Open-type centrifugal pump with single-blade impeller

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F04D 29/28 (2006.01) F04D 29/22 (2006.01)

Patent

CA 1214687

ABSTRACT OF THE DISCLOSURE The housing wall (23) through which the impeller shaft passes is embodied as a truncated cone. The leading edge (23) of the impeller blade flank (27) on the delivery side of the pump which grazes this housing wall with little clearance (24) extends in a spiral from the impeller blade tip (35) up to a point (31) at which it terminate in the hub; as a result, a relatively large area of the housing wall (23) having a width b decreasing toward the inside and located between the blade flank on the delivery side and the blade flank on the intake side is exposed between the blade outlet tip (35) and this terminal point (31).

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