A kind of oil free air compressor, it does not use oil lubrication, but the use of resin material lubrication, so the final discharge of gas without oil is called all oil free compressor, but at present, the quality of this air compressor is not very satisfactory, the domestic general is oil lubricated oil free machine. The air in the air compressor tank occupies a certain space, but it has no fixed shape and volume. When pressure is applied to the air in a closed container, the volume of the air is compressed, increasing the internal pressure. When the external force is removed, the air will return to its original volume under the action of internal pressure.
In the past, the air compressor caused by the sealing grease was easily damaged by the dry grinding of the bearing. The quality was not very satisfactory. The oil lubricated non oil machine was generally used in the country. Now a new type of all oil free air compressor is developed on the basis of the original oil free air compressor. The whole oil free air compressor uses the insulated piston and the piston. The adiabatic connecting rod makes the bearing grease no longer lost by the transmission and radiation of high temperature, so that the lifespan of the oil free compressor is greatly extended, and it has now completely exceeded the life of the same grade oil machine. Generally, the oil content of the oil machine is large, and the oil content of the oil free machine is 0.01ppm, so the oil content is used to distinguish the oil from the air compressor and the oil free.
It is necessary to use a multistage separation filter in a compressed air system or to pretreat compressed air into a dry gas with certain relative humidity; oil, a high speed and high temperature air compressor, can be lubricated, sealed and cooled by lubricating oil, but it pollutes the compressed air. While reducing the oil content in compressed air, the oil less machine, semi oil free machine and oil free machine developed by self lubricating materials have reduced the life of the compressed air, the corrosion of the internal and pipeline systems, and the rise of the oil content in the running in, wear and reducing periods of the air compressor. This is undoubtedly a threat to the pursuit of highly reliable automated production lines.
There is a movable object in the container. When the air is restored to its original volume, the object will be pushed outwards by the pressure of the air inside the container. This principle is widely used in production and life. Water - the relative humidity in the atmosphere is generally more than 65%. After compressed condensation, it becomes wet saturated air and contains a large number of liquid water droplets. They are the basic causes of corrosion of equipment, pipes and valves. In winter, the ice will block the small hole in the pneumatic system. It is worth noting that, even if the pure saturated air is separated from the net, the condensed water will still be condensed with the decrease of temperature, and the saturated water content will decrease by about 50% at about 10 degrees centigrade, that is, half of the water vapor is converted into liquid water.
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