Low energy irrigation device

Fluid sprinkling – spraying – and diffusing – Terminal outlet formed between parts mounted for relative... – Spray fluid pressure responsive discharge modifier

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239175, 239542, 239551, 239562, B05B 132, B05B 900, B05B 1500, B05B 114

Patent

active

047719478

ABSTRACT:
An improved irrigation device is provided for precision, relatively low energy and close range delivery of irrigation water to crops and the like with little or no soil erosion. The irrigation device comprises a generally cylindrical body for connection to the lower end of a vertical drop tube adapted for connection in turn to a water supply pipe, for example, of a traveling irrigation system, such as a center pivot or linear system. The cylindrical body carries a downwardly open nozzle for discharge of water into a pressure-regulated chamber defined in part by a funnel-shaped regulator cover slidable about the cylindrical body. The chamber is shaped or otherwise includes means for dissipating a substantial portion of the flow energy of the water discharged into the chamber. Water collecting within the pressure-regulated chamber produces a low pressure head sufficient to float the regulator cover sufficently to create a narrow annular gap through which a thin bubble-like film or curtain of water is emitted at a regulated low pressure for close range delivery into a furrow between adjacent crop rows.

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patent: 3874596 (1975-04-01), Baxter
patent: 3958760 (1976-05-01), Rosenberg
patent: 4194695 (1980-03-01), Schopp
patent: 4352462 (1982-10-01), Watanabe et al.

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