In automated pipeline control, pneumatic triplexes (including filters, pressure-reducing valves, and oil mist collectors) play a key role in the pneumatic valve system, ensuring the normal operation of pneumatic valves and extending the service life of the equipment.
Pneumatic triplexes are widely used in multi-purpose pneumatic valves, such as ball valves, butterfly valves, regulating valves, positioning valves, and high-efficiency angle seat valves, providing efficient and precise control for different industrial occasions. The following will detail the common types of pneumatic valves and their specific applications and requirements for pneumatic triplexes.
1. Pneumatic ball valve
Pneumatic ball valves are widely used in petroleum, chemical, food, medicine, metallurgy, and other industries and are suitable for quick cut-off, flow control, and other occasions.
They use an air source as power and use triple joints to filter, regulate, and lubricate the air source, thereby ensuring the efficient operation of pneumatic ball valves.
1.1 Filter requirements
The filter in pneumatic triplex effectively filters out moisture, oil, death, and other accidents in the compressed air and prevents the ball valve from being fatigued and stuck due to the influence of polluted gas.
1.2 Pressure relief function
The ball valve requires high stability of the air source valve pressure. It maintains the appropriate pressure by reducing it to prevent the air source rotation from affecting the valve switching accuracy.
1.3 Lubrication protection
The oil mist device provides lubrication, reduces the wear of the internal parts of the ball valve, improves the sealing effect, and thus extends the service life of the ball valve.
2. Pneumatic butterfly valve
Pneumatic butterfly valves are suitable for use in large pipeline systems that require quick opening and closing, such as water treatment, sewage discharge, pipeline air, etc., due to their small size, lightweight, and rapid opening and closing.
2.1 Clean air source
The pneumatic triplex filter effectively compresses the air volume, preventing the butterfly valve’s internal structure from being damaged or stuck due to damage.
2.2 Pressure control
The butterfly valve is sensitive to fluctuations in air source pressure during high-frequency opening and closing. The pressure-reducing valve helps maintain pressure stability and ensure the consistency of the pneumatic actuator’s action.
2.3 Lubrication guarantee
The butterfly valve needs proper lubrication during high-frequency operation to reduce friction and wear of the seals. The triplex’s oil mist dispenser can remotely spray lubricating oil to ensure the butterfly valve’s service life.
3. Pneumatic control valve
Pneumatic control valves are often used in processes requiring high-precision control of parameters such as flow, pressure, temperature, etc., in pharmaceutical, chemical, energy, and others industries. In the control valve, the pneumatic triplex plays a key role, ensuring the stability and accuracy of frequent adjustment actions.
3.1 Air purification
The regulating valve has high requirements for air cleanliness. The filter can prevent accidents such as failure and moisture from affecting the precise regulation function of the pneumatic regulating valve.
3.2 Pressure regulation
The regulating valve is sensitive to fluctuations in the gas source pressure. By adjusting the gas source pressure, the pressure valve value is ensured to always remain stable at the optimal level to avoid valve position fluctuations affecting control accuracy.
3.3 Specific lubrication
The clearance action of the regulating valve requires lubrication to reduce the coefficient. The oil mist device can inject a small amount of oil mist into the valve to ensure its response speed and durability.
4. Pneumatic diaphragm valve
Pneumatic valves are widely used in medicine, food, cosmetics, the chemical industry, environmental protection, and other industries and are suitable for pollution-free and high-cleanliness pipeline systems. The unique sealing design of pneumatic valves also places a greater demand on pneumatic triplexes.
4.1 Filter cleaning
Air conditioning valves’ application scenarios are extremely sensitive to air. The filter can ensure the cleanliness of the air entering the valve and prevent any accidental impact on the cleanliness of the fluid.
4.2 Pressure control
Valves usually require precise adjustment and control. Pressure-reducing valves ensure the stability of gas source pressure to prevent gas source pressure fluctuations from affecting valve opening and closing.
4.3 Lubrication precautions
The moving parts of the lubrication valve also require a certain amount of lubrication, but when used in an oil-free clean environment, the oil mist device can be used for crucial control to maintain lubrication without contaminating the pipeline medium.
5. Pneumatic Angle Seat Valve
Pneumatic angle seat valves are commonly used to control fluids such as steam, compressed air, and liquids. They are suitable for high-precision opening and closing and reliable sealing. They are widely used in industrial water treatment, the chemical industry, and other industries.
5.1 Addition
The compressed air used by the angle seat valve must be clean, and the pneumatic triplex’s filtering function ensures the addition of moisture to prevent clogging and corrosion.
5.2 Stable pressure
The valve air source pressure must be kept constant during the operation of the angle seat valve. This ensures that the air supply pressure is constant within an appropriate range to ensure the accurate opening and closing of the angle seat valve.
5.3 Lubrication improves durability
Angle seat valves are suitable for high-frequency use, and the lubrication provided by the oil mist device helps reduce the wear of the piston inside the valve, allowing the valve to operate for a long time.
6. Pneumatic stop valve
Pneumatic valves are suitable for precise flow regulation and cut-off and are widely used in industrial pipeline systems, especially in the chemical, petroleum, natural gas, and other fields.
6.1 Air source cleanliness
The connecting valve’s compact structure requires high quality of the air source. The filter can ensure the air source’s cleanliness and prevent valve blockage or loss.
6.2 Pressure control
Pneumatic valves require stable air pressure for opening and closing operations. Pressure is adjusted by increasing pressure to avoid pressure fluctuations that could affect these operations.
6.3 Lubrication
The oil mist device provides lubrication for the pneumatic actuator, reduces friction, and extends the service life of the pneumatic valve.
7. Pneumatic gate valve
Pneumatic gate valves are suitable for fluid switch control in a pressure environment and are used for partitioning in high-pressure industrial environments such as water treatment, mining, and the chemical industry.
7.1 Clean air source
Pneumatic gate valves require an immaculate air source. The triplex filter effectively improves and ensures the cleanliness of the air source.
7.2 Pressure regulation
The pressure stability required for gate valve operation is relatively high. The pressure-reducing valve can stabilize the gas source pressure and avoid the impact of pressure fluctuations on valve operation.
7.3 Lubrication support
Pneumatic gate valves are primarily operated in high-pressure and high-frequency situations. The oil mist device provides lubrication to reduce fatigue between the valve body and the actuator and extend the service life.
8. Summarize
The pneumatic triplex’s filtering, pressure stabilization, and lubrication functions are crucial to the stable operation of pneumatic valves. Different types of pneumatic valves have different requirements for pneumatic triplexes due to their specific uses and operating characteristics. The triplex can significantly improve the valve’s reliability, durability, and control accuracy, allowing the pneumatic system to be more widely used and optimized in industrial automation control.
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