Joystick control for backpack sprayer

摘要

A joystick control is coupled to an air discharge pipe (9) of a motorized backpack sprayer for controlling flow of liquid to an atomizer, the air discharge speed, and for aiming the discharge pipe. A handle (5) carries a filter (11) that can be accessed and cleaned, even with a full reservoir, by closing a fluid stop valve (12) and releasing the handle (5). Fluid flow to the atomizer is controlled (open/closed) by a control lever (6) that releases the flow of fluid through a fluid valve (13) when pressed, and closes the valve (13) automatically by a spring when released. A locking lever (8) can lock valve (13) open or closed. An engine throttle lever (7) is lateral to the valve (13) and an electrical on/off switch (4) is next to the lever (7).

主权项

1. A joystick for controlling a motorized backpack sprayer having an atomizer nozzle for releasing fluid from a reservoir of chemicals into a discharge pipe through which an engine forces air, the joystick comprising:
a body (1) with an end adapted to couple to the air discharge pipe (9) of the motorized backpack sprayer; a fluid inlet (3) configured for coupling by a hose to the reservoir of chemicals, and a fluid outlet (2) configured for coupling to the atomizer nozzle; a conduit (10) carrying controls leading from the joystick to the engine; a housing for a fluid filter (11) inside a joystick handle (5); a stop valve (12) operable to close the fluid inlet (3), whereby the fluid filter (11) can be accessed even with a full reservoir, by closing the stop valve (12) and releasing the joystick handle (5); a fluid valve (13) operable manually to release or to stop a flow of the fluid; a lock operable for holding the fluid valve (13) in one of an open and closed position; and, at least one of a lever and a switch coupled to the controls leading from the joystick to the engine, for selecting a speed of operation of the engine.