AIRLIFT PUMP WITH HELICAL FLOW PATTERN
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United States of America Patent
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Issued Date -
Dec 4, 2014
app pub date -
Jun 4, 2013
filing date -
Jun 4, 2013
priority date (Note) -
Abandoned
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Abstract
The airlift pump with helical flow pattern includes a nozzle body having a fluid passage therethrough. A plurality of air or gas injector nozzles surrounds the central passage. The outward side of each nozzle is tangent to the fluid passage wall through the body to produce circumferential flow in the fluid passage. Each of the air injector nozzles is also inclined in the direction of flow through the body, the tangential inclination resulting in a helical flow pattern through the body. The centrifugal force generated by the circumferential and helical flow through the body results in a pressure decrease through the core of the fluid passage, thereby enhancing entrainment of fluid into the device to increase its efficiency. The fluid passage through the nozzle body is devoid of any structure, and the inlet end of the passage is smoothly radiused to further increase the efficiency of the device.
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