Sprinkler with top-side remotely vented pressure regulator
First Claim
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1. An irrigation sprinkler, comprising:
- a riser;
a nozzle turret rotatably mounted at an upper end of the riser;
a gear train reduction mounted in the riser;
a turbine coupled to the gear train reduction and rotatable by water entering a lower end of the riser;
a gear driven coupling mechanism mounted in the riser and coupling the gear train reduction and the nozzle turret; and
a pressure regulator having a valve portion mounted in the riser adjacent a passage that provides a water flow path to the nozzle, the pressure regulator including a valve body movable relative to at least one water flow port to increasingly obstruct the at least one water flow port, a spring connected to bias the valve body to affect a pressure of the water at an entrance of a nozzle in the nozzle turret, and an air flow path separated from the water flow path that vents the valve portion of the pressure regulator to ambient air pressure;
wherein the spring that biases the valve body is mounted in the nozzle turret.
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Abstract
An irrigation sprinkler includes a riser and a nozzle rotatably mounted at an upper end of the riser. A gear train reduction is mounted in the riser and a turbine is coupled to the gear train reduction for rotation by water entering a lower end of the riser. A gear driven coupling mechanism mounted in the riser couples the gear train reduction and the nozzle. A pressure regulator is mounted in the riser and is adjustable from a top-side of the sprinkler.
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Citations
21 Claims
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1. An irrigation sprinkler, comprising:
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a riser; a nozzle turret rotatably mounted at an upper end of the riser; a gear train reduction mounted in the riser; a turbine coupled to the gear train reduction and rotatable by water entering a lower end of the riser; a gear driven coupling mechanism mounted in the riser and coupling the gear train reduction and the nozzle turret; and a pressure regulator having a valve portion mounted in the riser adjacent a passage that provides a water flow path to the nozzle, the pressure regulator including a valve body movable relative to at least one water flow port to increasingly obstruct the at least one water flow port, a spring connected to bias the valve body to affect a pressure of the water at an entrance of a nozzle in the nozzle turret, and an air flow path separated from the water flow path that vents the valve portion of the pressure regulator to ambient air pressure; wherein the spring that biases the valve body is mounted in the nozzle turret. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An irrigation sprinkler, comprising:
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a riser; a nozzle rotatably mounted at an upper end of the riser; a gear train reduction mounted in the riser and coupled to rotate the nozzle; a turbine coupled to the gear train reduction and rotatable by water entering a lower end of the riser; an automatic pressure regulator mounted in the riser; and wherein the nozzle is mounted in a turret and the pressure regulator includes a holder mounted for vertical reciprocation in the turret, a spring biasing the holder upwardly, a valve portion mounted in a flow path of the sprinkler above the gear train reduction, and a vent tube connecting the holder and a valve body of the valve portion. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An irrigation sprinkler, comprising:
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a riser; a nozzle rotatably mounted at an upper end of the riser; a gear train reduction mounted in the riser and having an input shaft; a turbine coupled to the gear train reduction and rotatable by water entering a lower end of the riser; a gear driven coupling mechanism mounted in the riser and coupling the gear train reduction and the nozzle; a pressure regulator mounted in the riser and remotely vented from a top-side of the sprinkler; and wherein the nozzle is mounted in a turret and the pressure regulator includes a holder mounted for vertical reciprocation in the turret, a spring biasing the holder upwardly, a valve portion mounted in a bull gear stem of the gear drive coupling mechanism, and a vent tube connecting the holder and a valve body of the valve portion.
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20. An irrigation sprinkler, comprising:
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a riser; a nozzle turret rotatably mounted at an upper end of the riser; a gear train reduction mounted in the riser; a turbine coupled to the gear train reduction and rotatable by water entering a lower end of the riser; a gear driven coupling mechanism mounted in the riser and coupling the gear train reduction and the nozzle turret; a pressure regulator having a valve portion mounted in the riser adjacent a passage that provides a water flow path to the nozzle, the pressure regulator including a valve body movable relative to at least one water flow port to increasingly obstruct the at least one water flow port, a spring connected to bias the valve body to affect a pressure of the water at an entrance of a nozzle in the nozzle turret, and an air flow path separated from the water flow path that vents the valve portion of the pressure regulator to ambient air pressure; and a vent tube that extends from the valve body through the nozzle turret and provides the air flow path.
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21. An irrigation sprinkler, comprising:
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a riser; a nozzle turret rotatably mounted at an upper end of the riser; a gear train reduction mounted in the riser; a turbine coupled to the gear train reduction and rotatable by water entering a lower end of the riser; a gear driven coupling mechanism mounted in the riser and coupling the gear train reduction and the nozzle turret; a pressure regulator having a valve portion mounted in the riser adjacent a passage that provides a water flow path to the nozzle, the pressure regulator including a valve body movable relative to at least one water flow port to increasingly obstruct the at least one water flow port, a spring connected to bias the valve body to affect a pressure of the water at an entrance of a nozzle in the nozzle turret, and an air flow path separated from the water flow path that vents the valve portion of the pressure regulator to ambient air pressure; and an adjustment mechanism mounted in the nozzle turret including a screw accessible from a top-side of the nozzle turret and rotatable to reduce an area wetted by the sprinkler.
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Specification