Method and apparatus for converting pressurized low continuous f

Fluid sprinkling – spraying – and diffusing – Processes

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239 99, 239276, 2394285, 13762414, 137853, 137895, B05B 108

Patent

active

049555391

ABSTRACT:
This invention relates to a device and method for converting low continuous liquid flow to a high intermittent and pulsating flow. They are especially adapted for operating sprinklers, shower heads and venturi pumps at low flow. Applicant has accomplished these objectives by introducing liquid at a controlled low rate of flow such as by the use of pressure compensating drippers in a liquid supply line, thence into a chamber which is somewhat expansible in volume and increasing pressure therein while restricting the outflow of the liquid until pressure created by introduction of such liquid is sufficient to eject the liquid intermittently at a higher flow and over a greater area. This is achieved by utilizing a pressure responsive check valve in the liquid exit and more particularly by utilizing a check valve designed for quick response to create a water hammer effect. At the same time the check valve is provided with openings downstream of the exit to create a venturi effect to admix air or another liquid with the effluent stream. The sprinkler units may be mounted upon chambers in the form of spikes for insertion into the ground, which spikes may also be mounted in a spaced manner upon the pipe or conduit supplying liquid thereto. The chamber may also be in the form of a flexible section of conduit upon which the check valve and spray unit are mounted supported upon the ground by means of a vertical rod or the like.

REFERENCES:
patent: 2715980 (1955-08-01), Frick
patent: 2988288 (1961-06-01), Nielsen
patent: 3865133 (1975-02-01), Alford
patent: 3902664 (1975-09-01), Deines
patent: 3920185 (1975-11-01), Kwok
patent: 4256262 (1981-03-01), Rosenberg et al.
patent: 4702280 (1987-10-01), Zakai et al.

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