Sprayer pump primed by using venturi

An agricultural sprayer includes a centrifugal pump (18) used for transferring fluid from a nurse tank (14) to fill a sprayer tank (12). It is sometimes required that the centrifugal pump (18) be primed in order to perform the transfer of fluid and this priming is done by creating a vacuum in a prim...

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Bibliographische Detailangaben
Hauptverfasser:	RICHARD ALLEN HUMPAL, DANIEL JOSEPH HUEGERICH, TRAVIS G. FUNSETH, TONYA MARIE O'NEAL
Format:	Patent
Sprache:	eng
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL BOTTLES, JARS OR SIMILAR CONTAINERS CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISEPROVIDED FOR FERTILISING FISHING FORESTRY HORTICULTURE HUMAN NECESSITIES HUNTING LIQUID HANDLING OPENING, CLOSING PERFORMING OPERATIONS PLANTING SOWING SPRAYING OR ATOMISING IN GENERAL TRANSPORTING TRAPPING WATERING
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Beschreibung
Zusammenfassung:	An agricultural sprayer includes a centrifugal pump (18) used for transferring fluid from a nurse tank (14) to fill a sprayer tank (12). It is sometimes required that the centrifugal pump (18) be primed in order to perform the transfer of fluid and this priming is done by creating a vacuum in a priming line (44) that is connected to a suction line (20) extending between an inlet of the pump (18) and to a discharge line (24) of the nurse tank (14), with the vacuum being caused by routing a flow of compressed air (36) through a venturi (40) having its throat (46) coupled to the priming line (44).