Irrigation network valve
AssigneeCountry Cocky Pty. Ltd.
InventorPeter Anthony Cocciardi
Life of this patent
Estimating the term…
Abstract
Irrigation valves for channels and for irrigation tanks are of three types. All are activated by a pair of tilting float arms to which a pair of floats are attached. One type is a T-shaped duct with a cylindrical valve disposed at 90 degrees to the part that is connected to the incoming flow. The floats rotate the valve. The second type has the same construction as the first type, thereby giving flow control but additionally has a rise and fall gate in the duct part that is connected to the incoming flow. The gate acts as a stop valve. The third type has a cylindrical duct connectable to the incoming flow but no valve and provides both flow control and stop valve facilities through a rise and fall gate actuated by the tilting of the float arms.
Claims18
A stop valve for a tank or irrigation channel, the stop valve comprising:
- a duct with an inlet and an outlet,
- a rise and fall gate between the inlet and outlet, and
- a float arm supported by the duct operable to open and close the gate in response to rise and fall movement of a float, the float arm pivotable about an axis parallel to the gate, the gate being at one end of the arm and the float at the opposite end,
- wherein the duct has a valve body including a cylindrical outlet portion with a circumferential slot in a coaxial sleeve inside the outlet portion that is rotatable in order to support the float arm that extends through the sleeve and the circumferential slot in order to connect the gate to the float attached to the float arm.
A combined flow regulator and stop valve comprising:
- a T-shaped valve body with an inlet axis and an outlet axis lying transversely to the inlet axis,
- a gate disposed across the inlet parallel to the outlet axis,
- a cylindrical portion of the valve body disposed about the outlet axis,
- a cylindrical valve member retained in the cylindrical portion, having a flow aperture connecting the inlet to the outlet or outlets,
- pairs of circumferential slots in the cylindrical portion of the valve body, and
- a pair of arms that pass diametrically through both the pairs of slots and the valve body, one end of each arm being attached to the gate, the opposite end being attached to a float,
- whereby ascent of the floats both rotates the valve member to reduce flow and causes the gate to move from an open position toward a closed position and descent of the floats also rotates the valve member to increase flow and causes the gate to move toward the open position.
Dependencies are inferred from the claim text.