The compressed air generated by the screw air compressor is impure when it is working. This is because the screw air compressor itself contains lubricating oil. When the compressed air is working, some of the lubricating oil is mixed into the compressed air. In addition, the air in nature itself contains some solid particles and moisture. When the solid particles and some moisture of the compressed air are mixed with the lubricating oil in the pneumatic circuit, the compressed gas is impure. When this unpurified gas is used directly in the pneumatic circuit, it will cause some faults in the pneumatic circuit, damage the pneumatic components, reduce the service life of the components, reduce production efficiency, and even cause accidents.
Therefore, the master of the Liuzhou Fuda screw air compressor maintenance team kindly reminds you: Purifying these compressed gases to obtain pure compressed gas is an essential and important part of the pneumatic system.
The compressed air drainer in the screw air compressor can make the air in the pipeline cool down, start to condense, and liquid water flows along the pipeline. Once it flows into the air drying filter/filter, a series of phenomena will occur.
First, the condensation effect, the condenser or the first filter element (stainless steel mesh) causes the water and air to change direction. This change causes the individual water droplets to combine with each other and then gather in the condenser. The water droplets gradually become larger, combine with other larger dirt and flow into the water storage chamber-the central area under the action of gravity. The water containing dirt flows along the bottom and is discharged through the automatic drain valve in the drain tank; a large amount of water (estimated to be 95% of the water) is discharged through this process.
The second filtering process passes through the cotton fiber mesh of the second filter element. Change the direction of the air flow in or near the cotton fiber rope and rotate the air flow. This cotton fiber rope is supported by the stainless steel mesh to form a vortex. At this time, the air is accelerated dozens of times, and the center of the vortex becomes a vacuum state just like a tornado.
Therefore, the water droplets that were not removed by the air dryer filter in the first filter are vaporized here into gas that has no adverse effect on the machine, and tiny impurity oil droplets are also removed here. The above is the purpose of the drain in the screw air compressor. The drain is a very important part in the air compressor and must be maintained regularly to avoid blockage, which will damage the pneumatic components of the air compressor, reduce the service life of the components, and even cause accidents.