Discuss the basic knowledge of air compressor
In the national economy, especially in the mining, petroleum, chemical, power and metallurgy and other areas are widely used with a certain pressure of gas, compressor is used to increase gas pressure and transport gas machinery.

Main uses of compressor

I. Power compressor

1 Compressed gas drives a variety of pneumatic machinery, such as: pneumatic wrench, air pick.

2 Control instruments and automation devices.

3 Traffic: The opening of the car door.

4 The food and pharmaceutical industries use high pressure gas to stir grout.

5 In the textile industry: air-jet loom, etc.

Knowledge of air compressor

2. Gas conveying compressor
1 Pipeline transportation: to overcome the resistance of the gas to the gas in the process of flowing in the pipeline.

2 Bottle conveying: reduce the volume of gas, so that the limited volume of more gas.

3. Refrigeration and gas separation with compressors such as freon refrigeration, air separation.

4. Petroleum and chemical compressors
1 For the synthesis and polymerization of gases, such as the synthesis of ammonia.

2 Hydrofining of lubricating oil.

Second, the working principle of the compressor

There are many types of compressors, although the use may be the same, but its structural form and working principle may be very different.

We know that the pressure of the gas depends on the number and intensity of the gas molecule impact per unit time, if the temperature of the gas in the volume is increased, the speed of the gas molecule movement is increased, the gas pressure can be increased, but when the temperature comes down, the gas pressure will be reduced, and the general requirement is that the compressed gas should have a low temperature, so this method is not advisable.

Therefore, the main way to increase gas pressure is to increase the number of gas molecules per unit volume, that is, to shorten the distance between molecules.

Reduce the volume of the closed space occupied by the gas and increase the pressure of the gas, which is the basic working principle of the positive displacement compressor (piston, slide, Roots, screw, etc.) : Using the method of inertia, through the continuous addition and reduction of air flow, due to inertia and each other are squeezed, shorten the distance between the points, and increase the pressure of the gas, the working principle of the turbine compressor belongs to this category.