The oil-free water-lubricated air compressor uses pure water that meets the drinking water standard as the lubricating medium. There is no lubricating oil component in the entire compression system, which ensures that 100% oil-free clean compressed air is supplied. Because it is widely used in aerospace, chemical, textile, electronics, medicine, food, bottle blowing and cap making, laboratories and other high-end industries with special process requirements.
The water-lubricated oil-free screw air compressor is a series of oil-free air compressors. It uses water as a lubricant, which fundamentally solves the problem of possible environmental pollution caused by lubricating oil. Compared with other oil-free air compressors, it has the advantages of simple and compact structure: low speed, low vibration and noise, low exhaust temperature, high thermal efficiency, stable and reliable performance, low specific power, etc. It is the development trend of new oil-free compressors.
In textile, glass, plastic, water treatment, chemical industry, cement and other industrial production, there are many types of low-pressure compressors with air supply pressure of 0.150.4MPa, which can save energy by more than 30% compared with low-pressure screw compressors produced by conventional main engines. Reduce huge energy losses.
Water-lubricated air compressors use pure water as lubrication and do not use lubricating oil, so they can provide users with very clean compressed air. Low operating cost (no air compressor oil, oil fine separation core, oil filter). The water-lubricated oil-free screw air compressor series air compressors use electric pure water to have three functions of sealing, cooling and lubrication. The air production per unit horsepower is 15% higher than that of ordinary dry compressors.
Water-lubricated oil-free air compressors are generally single-screw air compressors. The characteristics of single-screw water-lubricated oil-free air compressors are that the medium used for compressor lubrication is water, and water-based seals are used. Compressed air for oil has changed the production environment in some industries. Because water is sprayed into the compression chamber, the temperature is only about 40-50 degrees, constant temperature compression, and higher volumetric efficiency, which is 15% more efficient than dry oil-free screw air compressors. The maintenance cost of the oil-free water-lubricated screw air compressor is low, and only the water, water filter and air filter need to be replaced.
The working principle of the oil-free water-lubricated air compressor is through the pressure difference generated by the compressor itself. During the compression process, lubricating water is continuously injected into the compression chamber and the bearing. This design has the following characteristics:
The injected lubricating water can form a water film with a certain rigidity between the rotor, the star wheel and the casing, and the star wheel is directly driven by the main rotor. The lubricating water directly lubricates the graphite bearings at both ends of the star wheel.
The injected lubricating water can achieve air tightness, which is better than the general dry screw compressor. The lubricating water can absorb a large amount of compression heat, improve the compression efficiency, and avoid the possibility of friction or jamming between the rotor, star wheel and casing due to different thermal expansion coefficients.
Lubricating water also reduces noise caused by high-frequency compression. The water-lubricated screw air compressor uses pure water suitable for Qin use, and the parts and components used are international standard grades of 304 and 316 stainless steel.
The system adopts pure water suitable for Qin use, and the water circulates in the system all the time: and every 200 hours, the system automatically changes the water to ensure that the calcium content in the water is stable at the minimum value, and the operating temperature of the main engine is not higher than 50 degrees, there is no risk of fouling.
After the air is compressed, its water content has reached a saturated state. The water content of the compressed air is only related to the temperature and has nothing to do with others. The temperature of the compressed air produced by the water-lubricated unit is not higher than 50 degrees, and its water content is saturated at 50 degrees. state, because the exhaust temperature of other types of compressors is higher than 50 degrees, the water content of the compressed air of the water-lubricated unit is lower than that of other types of compressors.
