What are the specific advantages of damping spring
Damping spring shock absorber is a new type of shock absorber. It has a unique and even advantage that it can eliminate the inherent co vibration amplitude of steel spring, because it has the dual advantages of low frequency and large damping. But in fact, this is not all its advantages. Let's look at other advantages.
1. The structure design is reasonable, and the height of the shock absorber can be adjusted according to the practical needs;
2. The shape is firm and light, and the device is very simple, which can be used for internal vibration damping installation of various machines;
3. The springs in the damping spring shock absorber have been subject to heat treatment, ED rust prevention, paint baking, etc;
4. The anti sliding rubber at the bottom of the damping spring shock absorber is easy to install and has high safety.
The main components of the damping spring shock absorber are ordinary cast iron and ball cast iron. The ball cast iron body is hot-dip galvanized and has good resistance. Its advantages are also due to its structural characteristics.

Application environment of pneumatic butterfly valve
I believe you are familiar with pneumatic butterfly valve, but you must understand its application environment very well. Now let me elaborate on the application environment of pneumatic butterfly valve in detail, considering the following five factors:
1. Temperature
The rated working pressure of the pneumatic butterfly valve used at high temperature must be reduced according to the temperature correction coefficient of the working pressure of the pneumatic butterfly valve at high temperature, so as to ensure that the valve is stopped under safe conditions.
2. Corrosion
The pneumatic butterfly valve is generally made of stainless steel. The active anions (such as chloride ion and sulfur ion) in the medium are easy to destroy the stainless steel passive film, showing small corrosion holes on the base metal, which is the active center generated by pitting corrosion. The external potential of the metal inside the etch hole is relatively negative, and the external potential of the metal outside the etch hole is relatively positive, so an active passive micro galvanic corrosion cell is formed inside and outside the etch hole. The cell has the structure of large cathode and small anode area ratio, and the anode current density is large, and the etch hole deepens quickly. The strength of the corroded pneumatic butterfly valve is reduced, and it is easy to cause failure when receiving internal pressure and tensile load. Therefore, for pneumatic butterfly valves used in corrosive environments, data should be selected in a targeted manner, and protective measures should be taken to improve corrosion resistance.
3. Fatigue failure
Under the dynamic working condition, the pneumatic butterfly valve is often damaged by fatigue cracks under the cyclic load. Such destruction is normal failure. In order to extend the service life, it is necessary to ensure that the hose design and selection are correct, the device is accurate, and no additional stress such as twisting occurs to the hose.
4. Water hammer phenomenon
Water hammer phenomenon is a pressure transient process caused by sudden change of medium activity state and sudden change of fluid momentum in the pipe. It is a special oscillation phenomenon caused by unstable activities in the pipe. When the pressure wave of sharp rise and fall is transmitted through the pipeline, it will produce a noise similar to that generated when hitting the pipeline with a hammer, so it is also called "water hammer with two edges and one edge". When water hammer occurs, the impact on the elbow section of the pipeline becomes more intense. Therefore, the user should follow the requirements of the operating procedures, such as slowly heating, steadily pressurizing, reducing the change of instantaneous flow and pressure, and preventing water hammer.
5. Escort media
If the escort medium in the hose has chemical properties (acidic or alkaline) and is prone to electrochemical reaction, the material of each part of the hose shall be selected reasonably according to the corrosion resistance parameter table of the hose material.
In addition to the above, thermal shrinkage, external vibration and shock, alternating working conditions, short and regular monitoring and maintenance, and inadequate management in the tube will also affect the service life of the hose.