1. What is a pneumatic ball valve?

Answer: Pneumatic ball valve is an important control element of industrial system. The pneumatic ball valve is powered by compressed air, and the ball rod drives the ball to rotate 90 degrees to complete the fully open or fully closed action. The characteristic of pneumatic ball valve is that it can be configured with large diameter. The diameter of pneumatic ball valve produced by Jiuding Company can reach DN1200. The main function of the pneumatic ball valve is to cut off or connect the medium in the pipeline, and can also be used to regulate and control the fluid. With the advantages described above, pneumatic ball valves are widely used in various sectors such as petroleum, chemical industry, power generation, papermaking, atomic energy, aviation, rockets, etc., as well as in people's daily life.

2. What are the advantages of pneumatic ball valves?

Answer: Pneumatic ball valve has the advantages of compact structure, reliable sealing, convenient operation, quick opening and closing, small fluid resistance, wide application range and convenient maintenance and maintenance.

2. What are the daily maintenance points of pneumatic ball valves?

Answer: The following is the daily maintenance method of pneumatic ball valve summarized by Xiaobian based on years of experience.

1. Pneumatic ball valves work with compressed air as a power source, and compressed air usually contains impurities such as moisture, oil and dust. Moisture will corrode pipes, valves and cylinders; oil will deteriorate rubber, plastics and sealing materials; dust will cause valve body failure. Therefore, we must first ensure that the compressed air provided is clean, and select a suitable filter for the pneumatic ball valve to remove impurities in the air.

2. The operating air of the pneumatic ball valve should be filtered and dry air, and the dehumidification should be dehumidified when the dew point is below -15 °C. The filter should be drained and cleaned regularly, and the air source should be properly lubricated with frequent switching or harsh use conditions.

3. There should be an appropriate amount of lubricating oil in the air, usually 1 liter of lubricating oil per 10 cubic meters. For example, the effect of lubricating oil on pneumatic ball valves is quite similar to the dependence of human beings on water. What would happen to people without water. My method to detect the lubrication effect is to take a piece of white paper and place it near the exhaust port of the reversing valve. After the valve has been operated for three to four cycles, there are very light spots on the white paper, indicating that the hair conditioning effect is good.

3. What factors will cause the pneumatic ball valve to leak?

1. What is the reason for the leakage of the solenoid valve on the cylinder?

Answer: The reason for the leakage of the solenoid valve on the cylinder may be caused by the high air pressure in the pressure reducing valve.

2. What is the cause of air leakage from the exhaust hole of the cylinder?

Answer: The cause of air leakage from the exhaust hole of the cylinder may be the aging phenomenon of the sealing ring between the two movable parts inside the cylinder and the seal of the cylinder block.

3. What is the cause of air leakage in the upper and lower parts of the cylinder?

Answer: The reason why the upper and lower parts of the cylinder leak is because the sealing ring at the seal between the actuator and the cylinder does not achieve the sealing effect due to the frequent movement of the actuator, so the upper and lower parts of the cylinder produce air leakage.

4. What are the other factors that cause the cylinder to leak?

Answer: In addition to the above three factors, the factor that causes the air leakage of the cylinder may also be that the spring in the cylinder is damaged, causing the valve to not close properly due to insufficient force, resulting in the phenomenon of air leakage of the pneumatic ball valve.

4. What are the methods for dealing with air leakage of pneumatic ball valves?

Answer: There are three ways to deal with air leakage of pneumatic ball valves. The first method is to replace the seal of the actuator. The second method is to replace the seal at the cylinder. The third method is to replace the solenoid valve or adjust the air pressure of the pressure reducing valve to 3-5 kg, or disassemble and ventilate the lower part of the solenoid valve several times.