The performance of pneumatic ball valve shall be evaluated through valve test. The valve test is usually carried out only when the shock absorber is newly designed and manufactured, and it is not necessary to test the shock absorber one by one after mass production; Only type test is needed. However, the shock absorbers that are particularly important or must be adjusted in the shock absorption test to meet the technical requirements shall be tested one by one. The vibration reduction test should be carried out on the whole machine, so that the test conditions are the actual working conditions; The vibration reduction test can also be carried out on a special vibration reduction test bench, that is, the actual working conditions are simulated, the vibration source is artificially manufactured, and the difference between the shock absorber without the shock absorber and the shock absorber installed is compared to evaluate the advantages and disadvantages of the shock absorber.
According to different situations, various vibration excitation methods can be used to artificially produce vibration sources, such as using eccentric wheel rotation to drive the slider to generate reciprocating displacement excitation, using centrifugal force generated by unbalanced rotor to excite, using compressed air blower to excite, using loudspeaker to excite, using electromagnetic induction to excite, or using special vibration table to excite, etc. The parameters to be measured during vibration test include frequency, amplitude, velocity, acceleration, etc., and sometimes the stress or strain of some parts of the machine is measured. Different industrial departments and different machine products have different requirements for vibration.
Any pneumatic ball valve has its limitations. For example, in many cases, the pneumatic ball valve cannot be used for vibration isolation of machines with similar frequencies, and the air cushion pneumatic ball valve may not be used for vibration isolation of on-board equipment. But this does not mean that they have no valve effect, only that they are not suitable for some occasions. The same is true for pneumatic ball valves. Pneumatic ball valve is suitable for high-frequency vibration equipment, and also suitable for some types of stamping vibration. The effect is very good! Finally, many pneumatic ball valves on the market only have the appearance, not the inside! Their design premise is not designed according to the vibration reduction requirements at all. Such products cannot be called pneumatic ball valves at all, which is the root cause of the deterioration of pneumatic ball valves.
Finally, pneumatic ball valves are widely used; To sum up, we should not misunderstand that pneumatic ball valves have no damping effect. If it does not achieve the desired effect, it must be that you have not selected the pneumatic ball valve that is suitable for you.