Damping spring shock absorber strongly "occupies" the shock absorber market
The shock absorber market is very large, and it is difficult to choose a variety of models. In recent decades, one kind of shock absorber has quickly "dominated" the whole shock absorber market, and this is the damping spring shock absorber. Many people do not know what this is:
In fact, we can know something from the picture. Maybe you have met it often in your life, but you just haven't paid attention to it. Then why does it integrate into the market so quickly, and why is it so popular with the masses? In fact, there are three aspects:
1. No matter what the commodity is, the first one will talk about the price, and the price will be reasonable. The damper spring shock absorber is fair and reasonable in price, and can be generally accepted by people.
2. Compared with the traditional shock absorber, it has its own good advantages. The damping spring shock absorber is mainly composed of spiral spring, damping materials, upper and lower shells, rubber friction gaskets, etc. It not only eliminates the phenomenon of amplitude surge when the traditional spring shock absorber resonates, but also solves the problem of high natural frequency of rubber shock absorber, so it is an ideal product for active and passive vibration isolation.
3. Compared with ordinary products, the function of damping spring shock absorber is more powerful and complete. It can not only be used for lifting and noise reduction of fine instruments and meters, but also play an important role in vibration isolation, noise reduction and buffering. It can well eliminate vibration and solid transmission. It can also be used to alleviate floor elevation restrictions, and can also play an important role in various water pumps, air conditioning units, pipelines, etc. So its function is very powerful.
With these advantages, the damping spring shock absorber has been loved by a wide range of customers and is also the first choice to choose a shock absorber. The public's eyes are bright. Its "fire" has the performance characteristics that other shock absorbers do not have.

Corresponding strengthening and maintenance measures shall be taken in the structural design of pneumatic butterfly valve
In the structural design of pneumatic butterfly valve, in order to improve the load-bearing ability of bellows and prevent them from being damaged by machinery, corresponding strengthening and maintenance measures must be taken. For bellows with smaller diameter, most of them are armored steel wire mesh.
To analyze the strength of the metal wire mesh sleeve, first make clear the structural parameters and the relationship between them.
The net sleeve is made of several strands of metal wires with diameter d, each of which has several wires. It is wrapped on the cylindrical surface of the corrugated pipe with certain rules.
Therefore, in order to reasonably use the strength of the metal wire mesh sleeve, it is necessary to understand the bearing capacity of the bellows.
Since the rubber hose with wire mesh sleeve as the "tendon" is the predecessor of modern pneumatic butterfly valve, before analyzing the strength of the wire mesh sleeve of modern pneumatic butterfly valve, let's first discuss the condition of the wire mesh of the rubber hose under the stress condition. The rigidity of the rubber hose is very small, so the load caused by the medium pressure is basically accepted by the wire mesh. Pneumatic butterfly valves are different from rubber hoses because their lateral stiffness is much greater than the longitudinal stiffness. Therefore, a large part of the transverse load caused by the medium pressure is accepted by the bellows, while the longitudinal load is mainly accepted by the wire mesh.