Sprayer control system and method for using same

Claim 1

A chemical mixing and delivery system for delivering a mixture of carrier fluid and fluid chemical additive to at least one sprayer head, said system comprising: a regulated flow conduit connected to said sprayer head; a fluid pump having a fluid intake opening and a discharge opening and being adapted to pump fluid from said intake opening outwardly through said discharge opening; a flow control valve having an intake port, a bypass port, and a regulated port; first conduit means connecting said intake opening of said pump to said source of said carrier fluid; second conduit means connecting said discharge port of said pump to said intake port of said flow control valve; said regulated port of said flow control valve being adapted for connection to said regulated flow conduit; a bypass conduit having a first end connected to said bypass port of said flow control valve and a second end connected to said first conduit means; chemical additive means for adding a predetermined quantity of said chemical additive to said bypass conduit whereby a mixture of said chemical additive and said carrier fluid will be introduced to said fluid intake opening of said pump; said flow control valve having a valve member movable between a bypass position connecting said bypass port to said intake port and a regulated position connecting said intake port to said regulated port, said valve member connecting said intake port to both of said bypass port and said regulated port while moving between said bypass position and said regulated position; a flow sensor connected to said regulated flow conduit between said flow control valve and said sprayer head for sensing the rate of flow of said mixture of said chemical additive and said carrier fluid through said regulated flow conduit; control means connected to said flow sensor and said flow control valve for causing adjustment of the position of said flow control valve in response to the rate of flow sensed by said flow sensor; said control means comprising a microprocessor programmed to compare said flow rate sensed by said flow sensor to a predetermined programmed flow rate and to cause adjustment of said flow control valve until said flow rate sensed by said flow sensor matches said predetermined programmed flow rate.

Claim 12

A method for mixing and delivering a carrier fluid and a chemical additive fluid to a regulated flow conduit comprising: introducing a first predetermined quantity of said chemical additive fluid to a second predetermined quantity of said carrier fluid to create a mixture; using a pump to pump said mixture to an intake port of a flow control valve, said flow control valve having a regulated outlet port, a bypass port, and a valve member movable between a regulated position wherein said mixture will flow from said intake port to said regulated outlet port and a bypass position wherein said mixture will flow from said intake port to said bypass port, said valve member when moving from said regulated position to said bypass position causing a progressively increasing volume of said mixture to be delivered to said bypass port and a progressively decreasing volume of said mixture to be delivered to said regulated outlet port; taking the bypass portion of said mixture flowing from said bypass port and reintroducing said bypass portion to said pump for being pumped again to said intake port of said flow control valve; sensing the flow rate of said mixture flowing from said regulated outlet port with a flow sensor; connecting a microprocessor to both of said flow sensor and said valve member; using said microprocessor to compare the flow rate sensed by said flow sensor to a predetermined regulate flow rate and to cause movement of said valve member to a position wherein said flow rate sensed by said flow sensor matches said predetermined flow rate.

Claim 13

A method for mixing and delivering a carrier fluid and a chemical additive fluid to a regulated flow conduit comprising: introducing a first predetermined quantity of said chemical additive fluid to a second predetermined quantity of said carrier fluid to create a mixture; using a pump to pump said mixture to an intake port of a flow control valve, said flow control valve having a regulated outlet port, a bypass port, and a valve member movable between a regulated position wherein said mixture will flow from said intake port to said regulated outlet port and a bypass position wherein said mixture will flow from said intake port to said bypass port, said valve member when moving from said regulated position to said bypass position causing a progressively increasing volume of said mixture to be delivered to said bypass port and a progressively decreasing volume of said mixture to be delivered to said regulated outlet port; taking the bypass portion of said mixture flowing from said bypass port and reintroducing said bypass portion to said pump for being pumped again to said intake port of said flow control valve; sensing the flow rate of said mixture flowing from said regulated outlet port with a flow sensor; connecting a microprocessor to both of said flow sensor and said valve member; using said microprocessor to compare the flow rate sensed by said flow sensor to a predetermined regulate flow rate and to cause movement of said valve member to a position wherein said flow rate sensed by said flow sensor matches said predetermined flow rate.