CHEMICAL ADDITIVE APPARATUS AND METHODS
First Claim
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1. Apparatus for a water system, and includingan eductor operably connected in a closed water line, said eductor being operably and selectively connected to a chemical supply for drawing chemical into said closed water line when water runs through said eductor.
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Abstract
Chemical additive preferably derived from a solid chemical concentrate is selectively educted into the closed water recirculation or makeup line of a water system. A bypass line in one embodiment is controlled by a valve to direct system water through the eductor when chemical additive is desired, and at least a portion thereof around the eductor when no chemical additive is desired. Open line application is disclosed.
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Citations
18 Claims
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1. Apparatus for a water system, and including
an eductor operably connected in a closed water line, said eductor being operably and selectively connected to a chemical supply for drawing chemical into said closed water line when water runs through said eductor.
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9. Apparatus for treating water systems having a closed water line for conducting water through said system, said apparatus comprising:
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an eductor operably connected in said water line and having an inlet port connected to a chemical supply, a bypass water line operably disposed around said eductor to carry water in said system around said eductor; a valve for selectively directing water to said eductor for mixing chemical in said water line, or around said eductor for preventing the introduction of chemical through said eductors and into said water lines. - View Dependent Claims (10, 11)
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12. A water system including a closed water line for conducting water throughout the system and including chemical adding apparatus operably coupled in said line for adding water-treating chemical to treat water in said line, and further including:
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an eductor operably connected in said water line and having in upstream water inlet connected to said line and a downstream water outlet connected to said line, said eductor having a chemical inlet suction port operably connected to a chemical supply for drawing chemical into water flowing through said eductor, an eductor bypass conduit connected to said water line upstream and downstream of said eductor for bypassing water flow around said eductor, and a valve for directing water flow in said water line selectively through or around said eductor. - View Dependent Claims (13)
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14. A method of introducing chemical additive into a closed water line in a water system and including:
flowing water in said line through an eductor operably coupled in said line and drawing chemical into said water line in response to water flow through said eductor. - View Dependent Claims (15, 16, 17)
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18. Apparatus for treating a diluent and including:
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an eductor operably connected to a source of diluent; said eductor being operably and selectively connected to a chemical supply for drawing chemical into said diluent when diluent flow through said eductor; and an eductor bypass line for selectively diverting diluent around said eductor.
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Specification