Introduction to the characteristics of water-lubricated oil-free screw air compressor

In the field of oil-free air compressor, there is also an air compressor called water-lubricated oil-free air compressor, water-lubricated oil-free screw air compressor, which uses pure water lubrication that meets the drinking water standard, and the entire compression process is completely free of oil participation. Thus, 100% oil-free clean compressed air is provided.

A brief introduction to the characteristics of water lubricated oil-free scroll air compressor:

1. High efficiency, high reliability, 100% pure oil free compressed air, ideal isothermal compression.

2. Good technical electrical control system, caring and considerate maintenance instructions. Each unit adopts a microcomputer control system with self-diagnosis and protection functions. Chinese LCD panel can display the actual operation of the unit.

3. Original imported host.

Replacing oil with water to achieve the four major effects of lubrication, cooling, sealing and noise reduction, providing 100% oil-free air, no pollution, no special treatment of discharged water, in line with environmental protection requirements. Due to the role of water, its compression is the ideal isothermal compression, the air per unit horsepower than the general dry screw air compressor to increase the output of 15%. Good structure, resulting in its fully symmetrical balanced compression, it has less vibration and lower noise.

4. Ideal isothermal compression.

Theoretically, when the air at 20 ℃ is compressed to 0.7Mpa in an adiabatic process; since there is no cooling medium involved in the compression, the discharged air will be higher than 250 ℃. And we use lubricating water with cooling effect into the compression chamber, the exhaust temperature will be reduced to 40 ℃, to achieve high efficiency of isothermal compression. The moisture content in the compressed air will also decrease due to the decrease in temperature. At the same time, the lubricating water will further take away the dust in the air.

5. Meet environmental requirements.

The air compressor and other accessories are made of appropriate materials and treated to prevent rust. The compression chamber gasket also uses advanced materials such as ceramics and carbon fiber. The high-precision water filter efficiently filters impurities to ensure that the lubricating water maintains clean water quality.

Working principle of screw air compressor

screw air compressor is a kind of air compressor, also divided into twin screw and single screw. The twin screw is an upgraded product of the single screw, with more powerful performance and more reasonable design. At present, what we usually call the principle of screw air compressor refers to the working principle of double screw air compressor. Today, the editor will introduce in detail the working principle of each part of the screw air compressor.

1. The principle of screw air compressor. The intake process in the screw air compressor has no intake valve and exhaust valve group, and the intake can only be adjusted by opening and closing the automatic regulating valve.

When the cogging space of the main rotor and the auxiliary rotor is turned to the inlet of the housing, the space is larger. At this time, the cogging space below the rotor communicates with the free space of the intake port. When the air is discharged, the cogging is in a vacuum state, and the external air is sucked in and flows into the cogging of the main rotor and the auxiliary rotor in the axial direction. When air fills the entire tooth slot, the intake side end of the rotor rotates away from the intake port of the housing.

2. The sealing and conveying process of screw air compressor principle

at the end of the suction, the teeth of the main and auxiliary rotors will be sealed with the casing, and the air in the tooth groove will no longer flow out, that is, the "closed process". As the two rotors continue to rotate, their tooth peaks and tooth slots coincide with each other at the suction end, and the mating surface gradually moves towards the discharge end, thereby forming a "gas transmission process".

3. Compression process and fuel injection process based on screw air compressor principle

in the process of transportation, the anastomosis surface gradually moves to the exhaust port, that is, the space between the anastomosis surface and the exhaust port is gradually reduced, the air in the tooth groove is gradually compressed, and the pressure gradually increases, that is, the "compression process". At the same time of compression, due to the acting pressure difference, lubricating oil is injected into the compression chamber and mixed with air.

4. Exhaust process based on the principle of screw air compressor

when the end face of the rotor exhaust port communicates with the housing exhaust port (at this time, the gas pressure is high), the compressed gas starts to be discharged until the mating surface between the tooth top and the tooth groove moves to the exhaust end face of the housing. At this time, the cogging space between the mating surfaces of the two rotors and the housing exhaust port is zero. That is, the "exhaust process" is completed. At the same time, the length of the tooth gap between the rotor mating surface and the housing air inlet is again very long, thus starting a new compression cycle.