The split pneumatic adjustable ball valve changes too much Introduce rubber shock absorber to you in detail?
Songxia Pneumatic Butterfly Valve Co., Ltd. has arranged a detailed introduction on rubber shock absorber for you to read.
The ordinary rubber shock absorber can meet the requirements for vibration reduction of high-speed centrifuge. When the shock absorber structure has been determined, the greater the rubber hardness, the higher the critical speed of the system. The shock absorber with too low hardness can not meet the demand for strength and is easy to be damaged.
Generally, in the design of centrifuge, active vibration reduction and passive vibration reduction are applied at the same time. For high-speed centrifuge, it can be divided into three parts to consider vibration reduction; (1) The main shaft bearing pedestal is designed as a flexible vibration damping type; (2) The whole drive system is flexibly connected with the rack.
(3) The main shaft is flexibly connected with the diesel generator;
In addition to the flexible vibration damping type used in the above three parts, the elastic joint can also be used between the rotating head and the main shaft. There is a layer of silicone rubber between the main shaft and the rotating head of the~RC - z high-speed centrifuge consumed by Sowa, which can further absorb vibration. In addition to vibration isolation, various vibration reduction measures also reduce the critical speed of the rotating system, thus making the operating speed far away from the critical speed. This is why the main shaft of some high-speed centrifuges is very thick and not very long, while the whole system is still working above the critical speed.
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The manufacturing methods of non-metallic contraction joints include:
Mechanical bulging, hydroforming, rolling forming, welding forming, and electro deposition forming. Hydroforming can obtain bellows with better comprehensive performance; Rolling forming can be used to manufacture large diameter bellows; The bellows with good elasticity can be formed by welding; Electrodeposition forming can produce corrugated pipes with small diameter and high precision.
The design of non-metallic contraction joint is very complicated, and it needs to calculate and check the following parameters: pressure resistance ability, stress caused by displacement, fatigue life, stiffness and stability.
Stiffness: force required to make bellows produce unit displacement. It is the basis for calculating the elastic thrust of corrugated contraction joints. For bellows with the same diameter and pressure, the stiffness is one of the parameters to weigh the performance of bellows. At present, the consumer manufacturers use the EJMA method to calculate the single wave axial stiffness (fir) of the bellows, from which the axial stiffness (Kx) of the shrink joint is obtained. The stress in non-metallic contraction joints is mainly caused by internal pressure and displacement. The stress caused by displacement is usually greater than the stress caused by internal pressure. It is generally higher than the compliance force of bellows data along the meridian direction (longitudinal direction) of bellows.