Check whether the pneumatic butterfly valve is damaged?
The service life of the shock absorber should be about two years. Assuming that the shock absorber has been away for a long time or has been driving on a smooth road for a long time, the replacement frequency of the shock absorber is higher. Normally, once the problem of pneumatic butterfly valve is confirmed, how to check it?
First, check whether there is oil leakage. When you drive for maintenance and inspection, the maintenance personnel often check whether the oil seal washer and seal washer can be broken first. Generally, there are many reasons for the loosening of the nuts of the oil storage cylinder cover, such as the sealing washer may be damaged. If the problem of oil leakage cannot be eliminated after the possibility is eliminated, the maintenance personnel will pull out the shock absorber to check. Usually, if it has a problem, it will show a 'card issuing' situation. If there is no problem at this time, continue to check to see whether the gap between the piston and the cylinder barrel is too large, or whether the piston connecting rod is bent.
Moreover, in the real application of theory, many experienced people know that it occasionally has different noise defects. This is often due to the collision between the shock absorber and the leaf spring, frame or shaft. Long term collision will lead to its damage. At this time, it is required to adjust the position between it and the leaf spring to a suitable position, such as space clearance, length, etc. If the steel plate is deformed, it is required to change the steel plate or adjust the position of the shock absorber in time.

Mine explosion-proof pneumatic butterfly valve is composed of pneumatic actuator and ventilation butterfly valve mechanism. Mechatronic structural design, with functions of internal servo operation, opening signal position feedback, position indication, manual operation, etc., has strong functions, reliable performance, and control. Realize proportional adjustment control or switch control of process fluid medium. It is designed and manufactured by using a new structural form of central line disc plate welded with short structural steel plate. Therefore, the benefits can be summarized as follows: simple structure, light weight, small operating torque, rapid opening and closing, flexible action, large flow capacity, high adjustment accuracy, etc.