Sprayer pump primed by using venturi

Details Sprayer pump primed by using venturi Sprayer pump primed by using venturi

2009-02-27

2011-12-13

Nguyen, Dinh (Department: 3752)

Pumps

Diverse pumps

Priming and venting

C239S146000, C239S172000, C137S202000, C137S206000

Reexamination Certificate

active

08075282

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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Primax Pumps USA, CP100i Auto-Prime Pump, www.primaxpumps.com, Bakersfield CA.
European Search Report received Aug. 30, 2010 (6 pages).

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