Conical impeller and applications thereof
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United States of America Patent
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Jan 9, 2018
Issued Date -
N/A
app pub date -
Apr 14, 2015
filing date -
Apr 14, 2014
priority date (Note) -
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Abstract
A conical impeller with a hub that has a conical surface extending into the interior of the impeller. The hub has spiral, slanting arms which are attached or integrally formed with a plurality of curved blades. The blades can be connected at the bottom by a ring. The intersection of the conical surface of the hub with the blade forms an upward path for fluids and their entrained particles or gases which have been brought into the interior of the impeller to effectively completely be ejected. The discharge edges of the blades and/or the conical surface of the hub may have openings for discharging gas into the fluid. The impeller imparts low shear to the fluid and its components, and the shear is independent or only depends slightly on the size of the impeller. The impeller minimizes or eliminates particle agglomeration and fouling of the impeller. The efficiency of and flow pattern produced by the impeller means that containers don't require the use of baffles. The high efficiency and low shear of the impeller is useful for applications such as mixing of biological fluids, decontamination of produced water, chemical mechanical polishing, and flotation cells.
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