Manufacturing principle of spring pneumatic butterfly valve
As we all know, spring shock absorbers are made of round section steel wires, and the ratio of the uniform diameter of the spring to the diameter of the steel wire is equivalent. Spring index (also called winding ratio) is a spring made of rectangular section steel wire. Spring index refers to the uniform diameter of the spring, which is equivalent to the ratio of the data width on the side perpendicular to the spring axis.
In the practical application of spring shock absorber, the internal spring elasticity index of low-frequency damping shock absorber is usually selected between 4N. The smaller the steel wire diameter is, the higher the elasticity value can be obtained, but it is better to select between 7 and 13. The smaller the spring elasticity index value in the spring damper, the greater the deformation of the metal wire and the more accurate the winding. During the application, the inner side of the spring data is easy to generate excessive stress, which affects the fatigue strength of the data; However, if the spring force index value in the spring damper is too small, the spring will tend to be unstable. The spring index value of ordinary cylindrical helical spring in the national standard GB1239-62 is between 4 and 16. For example, the spring in the spring damper is composed of two metal wires with the same diameter, which are wound into a spring with the same number of coils and height. The spring force can be judged from the spring index value. The smaller the spring force index value in the spring damper, the greater the tension of the spring damper, and the harder the spring. On the contrary, the larger the spring index, the smaller the tension of the spring damper, and the softer the spring.
As long as the springs match each other, the spring shock absorber can play its best role, which is why there is so much information to understand and so much detail to understand when selecting springs.

Application of sleeve compensator and rotary compensator
The sleeve compensator can limit the number of contraction joint, transmission joint, flange sleeve compensator, bellows expansion and transmission universal joint by Tengyun.
The main function of combined transmission is to transmit axial thrust, so that the valve and pipeline can be connected as a whole, and its length can be adjusted by the bolt device is the longest. Double flange transmission is mainly the common model of VSSJAF (C2F) and single flange VSSJAFG (CF) transmission joints, and detachable double flange transmission joint VSSJAFC (CC2F). The main function of expansion joints is to extend the pipeline contraction, compensate the displacement caused by thermal contraction and contraction of pipelines, valves, pump devices, easy disassembly and maintenance. The most common ones are VSSJA-2 (B2F) double flange sleeve limited expansion joints and expansion installation SSQ and VSSJA-1 (BF) single flange sleeve compensator sleeve limited expansion joints, flange sleeve VSSJA sleeve compensator and sleeve SSJB. Pipe fittings manufacturing enjoys a history of more than 20 years in China. Our products, such as rubber joints, compensators and sleeve compensators, sell well all over the world. I hope to establish a business relationship with you to win, win the compensator.
Sleeve compensator maintains people's life. The pipe fittings are manufactured in China, enjoying a history of more than 20 years. Our products, such as rubber joints, compensators and sleeve compensators, sell well all over the world. I hope to establish a winning and business winning relationship with you.
The rotary compensator is composed of two sets of bellows and structural parts, which is mainly used to absorb the axial displacement and cannot accept the compression thrust of bellows. When selecting the compensator, it is necessary to correctly calculate the pressure and thrust, and correctly set the fixed support and sliding support. The rotary compensator is a new type of compensator. Compared with the traditional compensator, the rotary compensator has larger rotating space, which increases the compensation amount. The rotary compensator should pay attention to taking care of itself in the process of application, so as to better ensure its working performance.
1. After the operation of the compensator is completed, the loading arm must be pushed to one side of the oil platform, and the lifting arm of the loading arm must be positioned at 60 ° to make the equalizer in a relaxed state.
2. Stop checking the crane tube regularly and do a good job of maintenance; If medium leakage is found, it is necessary to disassemble the leaking rotator, stop cleaning and maintenance, and replace the seal.
3. Regularly coat smooth oil on the rotating part of each pin shaft and the spring equalizer.