Sprayer pump primed by using venturi
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United States of America Patent
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-
Dec 13, 2011
Grant Date -
Sep 2, 2010
app pub date -
Feb 27, 2009
filing date -
Feb 27, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
An agricultural sprayer includes a centrifugal pump used for transferring fluid from a nurse tank to fill the sprayer tank. It is sometimes required that the centrifugal pump be primed in order to perform the transfer of fluid and this priming is done by creating a vacuum in a priming line that is connected to a suction line extending between an inlet of the pump and to a discharge line of the nurse tank, with the vacuum being caused by routing a flow of compressed air through a venturi having its throat coupled to the priming line.
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