The imported pneumatic ball valve uses compressed air to push the movement of multiple groups of pneumatic pistons in the actuator, transmitting force to the characteristics of the cross beam and the inner curved track, driving the hollow spindle to rotate, and the compressed air disc is transported to Each cylinder changes the air inlet and outlet position to change the rotation direction of the main shaft. According to the requirements of the rotation torque required by the load ball valve, the number of cylinder combinations can be adjusted to drive the load ball valve to work.
Imported pneumatic ball valves have a wide range of products, such as the American VTON. Its main products include pneumatic flange ball valves, pneumatic internal thread ball valves, pneumatic flange ball valves, pneumatic cast steel ball valves, pneumatic stainless steel ball valves, pneumatic Regulating ball valve, pneumatic single-acting ball valve, pneumatic double-acting ball valve, pneumatic V-type ball valve, pneumatic O-type ball valve, pneumatic fluorine-lined ball valve, pneumatic pneumatic ball valve, pneumatic high-pressure ball valve, pneumatic fixed ball valve, which are widely used.
Imported pneumatic ball valves are a widely used general valve type in industrial applications. They are also consumed quickly and require regular and reasonable maintenance and inspections, so that work efficiency can be improved, costs can be saved, and maintenance time can be reduced.
If you choose imported pneumatic ball valves such as VTON from the United States and KITZ from Japan, the pneumatic actuators will be of good quality and have a long service life, so there will be fewer failures. However, if you choose some small and cheap manufacturers, Products, pneumatic actuators of pneumatic ball valves will inevitably have some faults during use. Therefore, this article analyzes common faults and solutions for imported pneumatic ball valves:
Fault phenomena
Inspection items
Solution
Imported pneumatic ball valve cannot operate
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1. Whether the solenoid valve is normal, whether the coil is burned out, and whether the solenoid valve core is stuck by stolen objects
Replace the solenoid valve, Replace the coil and remove the stolen goods
2. Check the single air supply of the actuator to see if it is working normally.
For example, the cylinder piston blows by, the cylinder and the If there is air leakage at the end cover or rotating shaft, etc., disassemble the actuator and check whether the seal is damaged and whether the surface of the cylinder inner hole is damaged.
Replace the broken sealing ring, replace the cylinder or piston
3. The impurities in the valve will block the ball core and remove the impurities.
Replace damaged valve parts
4. The handle of the manual actuator is in the manual position
Turn the handle to the pneumatic automatic position
5. The pipeline is twisted and flattened
Correct or replace the pipeline
6. The medium or ambient temperature is too low, causing the pipeline to freeze.
Remove condensate water in time and add water removal equipment
The imported pneumatic ball valve moves slowly and crawls
1. The air source pressure is not enough
Increase the air source pressure and install an air storage tank on the way to reduce pressure changes.
2. The amount is insufficient or other devices with large gas consumption are working at the same time.
Add a gas storage tank and add an air tank. press to reduce pressure changes
3. The pneumatic actuator torque is too small
Increase the actuator specification
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4. The valve load is too large, and the valve core or other valve parts are assembled too tightly and unreasonably.
Rebuild and adjust the valve torque
5. The cylinder friction changes greatly
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Properly lubricate
Other faults of imported pneumatic ball valves
1. The valve action begins to jump and the load Too large
Increase actuator specifications
2. The valve jumps at the end of the action, the action is too fast, and the inertial energy is too large Large
Add a speed control valve or external buffer
The imported pneumatic ball valve returns no signal
Signal power circuit, short circuit, open circuit
1. Repair the power circuit
2. Re- Adjust the cam to the correct position
3. Replace the micro switch