As we all know, the compressed air from the air compressor contains a lot of pollutants. The main pollutants are water, oil, solid impurities, etc. Therefore, there must be equipped to filter these impurities at this time. Compressed air purification equipment is also called after equipment for air compressors, which generally include aftercoolers, oil-water separators, air tanks, dryers, and filters; its main function is to remove water, oil, and Solid impurities such as dust.
If these impurities are not treated in time, they will cause great harm to the air system, and will bring about the following effects:
such as:
1. Solid particles: The air compressor suction filter is unable to eliminate particles smaller than 2μm in size. The inside of the air compressor system will also continue to produce wear debris, rust residue, and oil carbides, which will accelerate the wear of the air equipment and cause seal failure;
2. Moisture: After the atmosphere is compressed and condensed, it becomes wet saturated air and entrains a large number of liquid water droplets. They are the root cause of the corrosion of equipment, pipelines, and valves. In winter, freezing will also block the small holes in the pneumatic system. Even if it is separated and clean pure saturated air, as the temperature decreases, there will still be condensation water. About every 10 ℃ decreases, its saturated water content will drop by 50%, that is, half of the water vapor will be converted into liquid water droplets.
3. Oil: The air compressor running at high speed and high temperature use lubricating oil to play the role of lubrication, sealing, and cooling, but it pollutes the compressed air. Although the use of pure oil-free machines reduces the oil content in the compressed air, it also produces side effects such as reduced service life of wearing parts, corrosion of the machine interior and piping system, etc., which is undoubtedly for the pursuit of high-reliability automated production lines and air equipment Is a threat.
Therefore, compressed air post-processing equipment has become the key equipment to remove these impurities, escorting product quality and air equipment. Common post-processing equipment includes air tanks, filters (high-efficiency degreasers, precision filters), dryers (refrigeration dryers, adsorption dryers), oil-water separators, coolers, etc.
How to choose is the key?
Dryer: The dryer is to further absorb and remove the moisture and oil in the compressed air and turn it into dry air for use in a system composed of pneumatic instruments and jet components that require high air source quality. At present, there are mainly two types of compressed air drying devices produced and used in my country: adsorption type and refrigeration type.
Dream refrigeration dryer adopts aluminum alloy plate-fin evaporator assembly. The aluminum alloy material has good corrosion resistance, which effectively solves the problem of damage to the refrigeration dryer due to the problem of corrosion and leakage of the evaporator. The plate-fin heat exchanger has a compact structure, and the heat exchange area per unit volume is 5 to 10 times higher than that of the general tube heat exchanger, which improves the heat exchange effect of the evaporator, reduces the heat exchange temperature difference, and saves energy. And can make the structure of the whole machine more compact, reducing the space occupied.
Air tank: The compressed air from the air compressor cannot be put into production immediately, and the air tank needs to be temporarily stored. The main function of the air tank is to buffer, cool down, remove water, and remove oil. When the air passes through the air tank, the high-speed airflow hits the wall of the air tank to generate confluence, and the temperature in the air tank is rapidly reduced, so that a large amount of water vapor is liquefied, thereby removing a large amount of water and oil.
Dream air tank adopts a special process design to make the air pressure more stable and the air system to obtain a constant pressure. At the same time, it also has an energy-saving effect. When the air tank is full, the air compressor will automatically run at low frequency, and the efficiency of the whole machine will decrease.
The role of the filter: In addition to moisture, the compressed air contains oil, dust, and various odor components. The equipment that physically filters and removes these compressed air pollutants is called a filter.
In order to achieve high-precision filtration quality, Dream Precision Filter adopts multi-layer filter materials, including borosilicate hydrochloric acid fiber layer, glass fiber layer, activated carbon layer, multi-layer non-woven fabric layer, and stainless steel mesh layer. Really achieve high-quality air without oil and impurities.
When you want high-quality pure air and have an energy-saving air system, the importance of post-processing equipment cannot be ignored. Are you clear about the post-processing equipment selection?
