초록 ▼

An agricultural spray implement includes a plurality of removable valve/filter/nozzle cartridges. Each removable cartridge has a single housing that retains a magnetized filter, a high speed solenoid valve, and a spray nozzle. In the event the system filter of the spray implement is removed, fine pa

An agricultural spray implement includes a plurality of removable valve/filter/nozzle cartridges. Each removable cartridge has a single housing that retains a magnetized filter, a high speed solenoid valve, and a spray nozzle. In the event the system filter of the spray implement is removed, fine particles which otherwise might clog the solenoid valves are stopped from entering the solenoid valves by the magnetized filters of the valve/filter/nozzle cartridges. Each cartridge has a clean-out purge valve so that its magnetized filter can be unclogged without removal of the magnetized filter from the cartridge housing. A light emitting diode of the cartridge provides a visual indication that the cartridge is dispensing agricultural liquid. The light emitting diode is turned on when the solenoid valve is controlled to be open. In some embodiments, the light emitting diode is not supplied with current until after the solenoid valve has opened and only a smaller holding current is needed to hold the solenoid valve open.

대표청구항 ▼

[ What is claimed is:] [1.] An agricultural spray assembly comprising:a magnetized filter;a solenoid valve capable of opening in less than 10 milliseconds;a spray nozzle;a housing retaining said magnetized filter, said solenoid valve and said spray nozzle, an agricultural liquid flowing into an inle

[ What is claimed is:] [1.] An agricultural spray assembly comprising:a magnetized filter;a solenoid valve capable of opening in less than 10 milliseconds;a spray nozzle;a housing retaining said magnetized filter, said solenoid valve and said spray nozzle, an agricultural liquid flowing into an inlet of said housing, through said magnetized filter, through said solenoid valve, and out of said spray nozzle at a flow rate of less than one gallon per minute when said solenoid valve is open;wherein said housing forms a chamber into which said fluid passes before passing through said magnetized filter, said housing also forming a purge passage from said chamber such that fluid in said chamber can pass through said purge passage and from said agricultural spray assembly without passing through said magnetized filter.