Fluid sprinkling – spraying – and diffusing – With selective proportioning or correlated flow for plural... – Having traversing motion responsive means
Patent
1989-11-02
1990-11-06
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
With selective proportioning or correlated flow for plural...
Having traversing motion responsive means
222 57, 222155, 222310, 239 71, B05B 700
Patent
active
049679570
ABSTRACT:
An injection mixing apparatus is provided for use with a spraying system carried on a mobile vehicle of the type including a spray bar, a carrier reservoir for holding a supply of a liquid carrier medium, a main pump interposed between the carrier reservoir and the spray bar, a flow control valve interposed between the main pump and the spray bar, a ground speed sensor for developing a ground speed signal corresponding to the speed of the vehicle, a pressure sensor for sensing the pressure across the spray bar and developing a corresponding pressure signal and a supply of chemical agent to be mixed with the carrier at a desired concentration for delivery at the spray bar. The injection mixing apparatus comprises at least one injection control loop with an injection pump coupled intermediate the supply and the main pump for injecting the chemical agent into the carrier ahead of the main pump, and an injection controller for controlling the injection pump. The injection controller comprises a tachometer for sensing the rotational speed of the injection pump and developing a corresponding rotational speed signal and a pump control circuit for developing a speed control signal for controlling the pump rotational speed in response to a first input signal and a feedback signal comprising the rotational speed signal. A system controller develops the first input signal and includes a circuit for developing a flow rate signal corresponding to the flow rate of material to the spray bar, and for applying this flow rate signal to the pump control circuit as the first input signal.
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Bushnell Richard
Dickey-john Corporation
Forman Michael J.
Kashnikow Andres
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