Fluid handling – Processes – With control of flow by a condition or characteristic of a...
Patent
1986-08-19
1988-04-05
Schwadron, Martin P.
Fluid handling
Processes
With control of flow by a condition or characteristic of a...
73 3, 137240, 137486, 1374875, 137569, 137606, G05D 1113
Patent
active
047352256
ABSTRACT:
The invention provides a method and an apparatus for drawing a liquid from a reservoir and regulating the output and pressure of the liquid in order to inject it in precise proportions into another liquid flowing in a distribution system with a predetermined pressure and output. A pump is disposed in a principal circuit which connects the reservoir to the distribution system. An intake of the pump is connected to the reservoir and an outlet of the pump is connected via an electrically controlled valve to the system. Prior to injecting liquid additive into the system, the output and pressure of the principal circuit may be preset by isolating the reservoir from the pump intake and connecting the pump intake to an auxiliary circuit having a water inlet controlled by a valve. After presetting, the pump intake may be connected to the reservoir to draw liquid additive therefrom and inject the liquid additive into the system. During injection, the output of the liquid additive is regulated and the pressure in the principal circuit is monitored so as to maintain the preset output and pressure. The invention is particularly applicable to agricultural equipment used for injecting additives into water flowing in a mechanized sprinkling and irrigation system.
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TR M. R. Gebhardt, A. R. Kliethermes, C. E. Goering Title: Metering Concentrated Pesticides; consisting of six pages.
Hepperle Stephen M.
Robinetterie S.F.R. S.A.
Schwadron Martin P.
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