The support must be isolated from the machinery, which is called passive vibration isolation
For precision instruments with high requirements for vibration isolation effect, multilayer diaphragms are generally used; For the complex vibration isolation system with multi-directional excitation and multiple responses, the linear vibration, torsional vibration and their coupling should be considered, and the vibration isolation coefficient should be calculated according to the multi degree of freedom model
When frequency ratio λ In case of large changes, such as wide band excitation and machinery with large weight changes, the use of nonlinear vibration isolation system can achieve better vibration isolation effect. In the vibration isolation design, the parameters and structural type of pneumatic butterfly valve are determined according to the size, direction and frequency of vibration source, as well as the size, weight and vibration isolation requirements of the machinery to be isolated