Sprinkler system conversion kit
First Claim
1. A chemical treatment apparatus for the infusion of soluble solid chemicals into a pressurized liquid flow stream within an existing pipeline comprising:
- a housing;
inlet means on said housing to receive liquid flow from the pipeline for treatment in said apparatus, said inlet means including shutoff means for selectively blocking said liquid flow;
mixing means within said housing for exposing the surface of said solid chemicals to at least a portion of said liquid flow stream to dissolve a portion of said solid chemicals into said liquid to form a treatment solution, said mixing means including;
canister means for holding said solid chemicals in position to be impinged upon by said liquid flow from said inlet means during operation, said canister means including walls perforated by a plurality of small openings permitting liquid flow therethrough but preventing the passage of said solid chemicals;
cap means for holding said canister means in place and sealing a canister opening in said housing during operation, said cap means being removable to allow easy replenishment of said solid chemicals in said canister means;
outlet means to discharge said treatment solution into the pipeline;
air vent valve means in an air vent in said housing for allowing downstream drainage during depressurization of the pipeline by allowing air to replace drained liquid and for sealing said air vent during normal pressurized operation;
safety interlock means preventing removal of said cap means unless said shutoff means in said inlet means is blocking said liquid flow.
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Accused Products
Abstract
A conversion kit for converting an existing sprinkler system liquid supply line into a general purpose soluble chemical application device is used to apply insecticides or fertilizer. The easily installed kit mixes dry chemicals with an existing pressurized liquid to form and expel appropriate treatment solution. Spent dry chemicals can be easily replaced in a removable canister. Chemicals from conventional bulk packages or specially prepared packets may be used. A safety interlock shutoff valve is provided to prevent pressurization of the system while chemicals are being replaced. A vacuum breaking air vent valve is provided to allow drainage of liquid from the system. All components are enclosed within and supported by a single housing. The housing is preferably molded from a durable plastic material.
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Citations
11 Claims
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1. A chemical treatment apparatus for the infusion of soluble solid chemicals into a pressurized liquid flow stream within an existing pipeline comprising:
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a housing; inlet means on said housing to receive liquid flow from the pipeline for treatment in said apparatus, said inlet means including shutoff means for selectively blocking said liquid flow; mixing means within said housing for exposing the surface of said solid chemicals to at least a portion of said liquid flow stream to dissolve a portion of said solid chemicals into said liquid to form a treatment solution, said mixing means including; canister means for holding said solid chemicals in position to be impinged upon by said liquid flow from said inlet means during operation, said canister means including walls perforated by a plurality of small openings permitting liquid flow therethrough but preventing the passage of said solid chemicals; cap means for holding said canister means in place and sealing a canister opening in said housing during operation, said cap means being removable to allow easy replenishment of said solid chemicals in said canister means; outlet means to discharge said treatment solution into the pipeline; air vent valve means in an air vent in said housing for allowing downstream drainage during depressurization of the pipeline by allowing air to replace drained liquid and for sealing said air vent during normal pressurized operation; safety interlock means preventing removal of said cap means unless said shutoff means in said inlet means is blocking said liquid flow. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification