Before using the scotch yoke pneumatic actuator, the staff should check whether there is air leakage in the scotch yoke pneumatic actuator. Below is a small edition of Beijing Ruitou to teach you how to check the air leakage in the scotch yoke pneumatic actuator.
When checking for air leakage, soap solution should be applied at each checkpoint, because the effect of showing air leakage is more sensitive than listening to sound.

When checking the quality of the air discharged by the reversing valve, we should pay attention to the following three aspects: first, to know whether the lubricating oil contained in the exhaust gas is appropriate, the method is to place a clean white paper near the exhaust port of the reversing valve. After three to four cycles of work, if there are only very light spots on the white paper, it shows good lubrication; second, to know whether there is condensate in the exhaust gas; third, to know whether the exhaust gas contains condensate water; and third, to know not to Is there a leak in the exhaust port of the gas? A small amount of air leakage indicates the early damage of the component (it is normal for the gap sealing valve to have a slight leakage). If the lubrication is not good, the chemical pump should consider whether the installation position of the oil mist is suitable, whether the selected specifications are appropriate, whether the oil dropping amount is adjusted reasonably and whether the high-quality vibration disk management method of the pipe meets the requirements, if there is condensate discharge, whether the location of the filter is appropriate, whether the actual selection and selection of various dewatering elements are reasonable, and whether the condensate water management meets the requirements. The main causes of leakage are poor sealing in valve or cylinder, insufficient air pressure and so on. When the leakage of the sealing valve is large, it may be caused by the wear of the valve core and the valve sleeve.

Cylinder piston rods are often exposed. Observe whether the piston rod is scratched, corroded and eccentrically worn. According to whether there is air leakage or not, the contact between piston rod and guide sleeve in front cover, sealing ring, the quality of compressed air treatment and whether there is transverse load in cylinder can be judged.
For example, safety valve, emergency switch valve and so on, die casting die is seldom used. When checking regularly, it is necessary to confirm the reliability of their actions.
Let solenoid valve switch over and over again, from the switching sound can judge whether the valve is working properly. For AC solenoid valves, if there is buzzing sound, it should be considered that the moving core and the static core are not fully absorbed, there is dust on the suction joint, the separation ring falls off or damaged, etc.
Above is the method of checking the scotch yoke pneumatic actuator. Before using the pneumatic actuator of the fork, besides checking whether there is air leakage, the valve and other parts should be checked regularly in the maintenance to ensure the normal operation of the scotch yoke pneumatic actuator.