System for proportioned liquid dispensing
First Claim
1. A dispensing system for proportional mixing of selected liquids comprising:
- a flow meter adapted to be installed in a first conduit containing a flowing source of a first liquid to be mixed, said flow meter being characterized as providing an externally emitted signal correlated to the flow rate being encountered;
an energizeable pump operably arranged for its discharge to be connected to said first conduit downstream of said meter;
a second conduit connected to the intake of the said pump for receiving a quantity of a second liquid to be mixed with said first liquid;
a pressure sensor adapted to sense pressure values of said first liquid in said first conduit and to emit an output signal correlated to changes in the pressure being sensed; and
control means operable to receive the emitted signals from both said pressure sensor and said flow meter for varying the operation of said pump in controlled correlation to the combined values of said signals.
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Accused Products
Abstract
A system for proportional liquid dispensing of two liquids, the first of which can comprise the main flow drinking water supplied to livestock or poultry and the second of which can comprise controlled quantities of medication or nutrient to be introduced into the drinking water. Comprising the system is a solenoid operated pump for discharging controlled quantities of the second liquid into the main flow. A flow meter emits an electrical signal of the main flow rate at any given time while an optical pressure sensor emits an electrical signal indicative of the static pressure of the main flow. Logic circuits combine the flow rate and pressure signals for varying pump operation to controllably maintain a predetermined mixture ratio of the two liquids.
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Citations
13 Claims
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1. A dispensing system for proportional mixing of selected liquids comprising:
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a flow meter adapted to be installed in a first conduit containing a flowing source of a first liquid to be mixed, said flow meter being characterized as providing an externally emitted signal correlated to the flow rate being encountered; an energizeable pump operably arranged for its discharge to be connected to said first conduit downstream of said meter; a second conduit connected to the intake of the said pump for receiving a quantity of a second liquid to be mixed with said first liquid; a pressure sensor adapted to sense pressure values of said first liquid in said first conduit and to emit an output signal correlated to changes in the pressure being sensed; and control means operable to receive the emitted signals from both said pressure sensor and said flow meter for varying the operation of said pump in controlled correlation to the combined values of said signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification