How to repair the sprayer nozzle when the sprayer nozzle is broken? Common faults and solutions

Common Faults and Solutions for Spray Nozzles

1. Abnormal Water Stream Characteristics

Normal Operation: When rotary nozzles are functioning correctly without obstructions (such as the rocker-type water guide or impeller of a worm gear), the water stream should have a smooth and transparent, circular dense section near the nozzle, gradually turning white and dispersing as it moves away. The range should be at least 85% of the standard value, and the water should be well atomized. Any deviation from this indicates an abnormal water stream.

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Causes and Solutions:

1. Rough and Opaque Water Stream:

   • Cause: Burrs or damage to the spray head.
   • Solution: Polish the spray head or replace the nozzle.

2. Dispersed Water Stream:

   • Cause: Significant damage inside the nozzle or a twisted and deformed rectifier.
   • Solution: Replace the nozzle or repair/replace the rectifier.

2. Insufficient Water Stream Range

1. Good Atomization, Insufficient Range:

   • Solution: Increase the nozzle speed.

2. Poor Atomization, Insufficient Range:

   • Cause: Inadequate working pressure.
   • Solution: Increase the pressure as needed.

3. Improper Rotation of the Rocker Arm Sprinkler

1. Normal Rocker Arm, Slow or Non-Rotating Sprinkler:

   • Causes:
     • Gap between the hollow shaft and sleeve shaft is too small.
     • Sediment blockage.
     • Tight sleeve shaft during installation.
   • Solutions:
     • Increase the gap.
     • Remove and clean the sediment.
     • Loosen the sleeve shaft appropriately.

2. Small Opening Angle of the Rocker Arm:

   • Causes:
     • Rocker arm spring is too tight.
     • Rocker arm is installed too high.
     • Tight fit between the rocker arm and shaft.
     • Insufficient water pressure.
   • Solutions:
     • Adjust the spring tension.
     • Lower the rocker arm.
     • Increase the gap between the rocker arm and shaft.
     • Increase water pressure.

3. Weak Percussion with Large Swing Angle:

   • Cause: Deflector cuts too deeply into the water stream, causing premature flushing.
   • Solution: Thicken the percussion block.

4. Unstable Rocker Arm Tapping Frequency:

   • Cause: Loose fit between the rocker arm and shaft.
   • Solution: Identify and correct the cause.

5. Rocker Arm Fails to Return:

   • Cause: Loose rocker spring.
   • Solution: Tighten the spring.

4. Improper Rotation of the Worm Gear Type (Impeller Type) Nozzle

1. Impeller Idling, Non-Rotating Nozzle:

   • Causes:
     • Loose connecting screw between the impeller shaft and small worm gear.
     • Loose positioning screw between the large worm gear and sleeve shaft.
   • Solutions:
     • Tighten the connecting screw or reinsert the pin.
     • Tighten the positioning screw.

2. Normal Water Stream, Non-Rotating Impeller and Spray Body:

   • Causes:
     • Lack of oil in the worm gear or gear, causing high resistance.
     • Tight positioning screw causing eccentricity in the large worm gear.
     • Impeller stuck by foreign objects.
     • Rusted worm gear, gear, hollow shaft, or sleeve shaft.
   • Solutions:
     • Add lubricating oil.
     • Loosen the positioning screw appropriately.
     • Remove foreign objects.
     • Remove rust and apply oil.

5. Water Leakage from the Rotating Part of the Nozzle

1. Sand in the Gasket:

   • Cause: Sand makes the sealing surface unsealed.
   • Solution: Remove and clean the hollow shaft.

2. Inadequate Processing Accuracy:

   • Cause: The end face of the hollow shaft and sleeve shaft cannot closely match.
   • Solution: Repair or replace the nozzle.