Fluid sprinkling – spraying – and diffusing – With mobile tank-type supply means – Aircraft carried
Patent
1980-10-20
1982-11-02
Marbert, James B.
Fluid sprinkling, spraying, and diffusing
With mobile tank-type supply means
Aircraft carried
23922217, B05B 132
Patent
active
043569722
ABSTRACT:
The disclosure is directed to a center pivot irrigation system capable of operation under high or low water pressure and a constant volume sprinkler head therefor, which together provide uniform water distribution over an agricultural field notwithstanding the presence of hills and valleys in the field, pressure fluctuations of the water source, friction losses or the direction or magnitude of the wind. The system employs a plurality of sprinkler heads each of which provides a constant volume of water to the annular area over which it travels. Because the annular areas increase in size and total water requirements with increasing distance from the center pivot, the water delivering capacity of each sprinkler head is chosen as a direct function of its radial distance from the center pivot, thus insuring the same water distribution to all points on the field. Each sprinkler head is designed to produce a widespread circular spray pattern that efficiently distributes the proper volume of water over its associated area with minimal losses to evaporation. This is accomplished by creating an upward jet of water that impinges on a water dispersion wheel, causing the wheel to rotate and throw the water radially outward. The undersurface of the wheel has two sets of water distributing grooves that create a dual circular spray pattern that uniformly distributes water over the associated flow area.
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