Archimedean screw pumps

Rotary kinetic fluid motors or pumps – Runner has spirally arranged blade or fluid passage – Extending along runner axis

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F04D 302

Patent

active

042459494

ABSTRACT:
An improved form of archimedean screw pump is disclosed comprising a pump cylinder having an internal helicoidal vane portion affixed to the said pump cylinder by its circumferential helical edge and a partial core portion affixed to and extending from the said vane portion, the length of a section of said partial core portion on a plane through the axis of the pump cylinder, being greater than or equal to the longitudinal distance, in the said plane, between adjacent longitudinally spaced vane portions. The provision of a ribbon core substantially avoids the "choking" problems of known pumps of this type and the particular form of ribbon core enables the throughput of the pump further to be improved.

REFERENCES:
patent: 1150408 (1915-08-01), Wilson
patent: 1196696 (1916-08-01), Jones

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