First, the wrong choice of lubricants
Screw air compressors Lubricating oils for cylinders are generally considered to be in the summer. HS-19 lubricants are used in summer and winter. HS-13 air compressor oil Schneider screw air compressor oil. Some operators do not pay attention to the choice of cylinder lubricants, and believe that as long as there is lubricating oil in summer or winter. If HS-13 lubricating oil is used in summer, the temperature of the cylinder of the air compressor is also high due to the high ambient temperature, so that the viscosity of the lubricating oil is lowered. This is not conducive to lubrication, and it is easy to make the piston ring pull the surface of the cylinder; on the other hand, Conducive to the cylinder seal, easy to leak, increase energy consumption. Similarly, if HS-19 lubricant is used in winter, its viscosity is too large. Although it is good for sealing, it increases the resistance of the piston ring of the air compressor and the resistance of the gas flowing through the valve passage, which increases the energy consumption of the air compressor. . Therefore, the cylinder lubricant must be replaced in time as the season changes.
Second, scraper ring misassembly
in single-action screw air compressor > During repairs, the repairer often does not pay attention to the assembly direction of the scraper ring, thus causing misassembly: most of the air compressors are splash lubrication, but the amount of oil splashed on the working surface of the cylinder is not easy to control. If too much lubricating oil enters the cylinder, and the low flash point of the lubricating oil increases not only the consumption of lubricating oil, but also the formation of carbon deposits in the exhaust valve, passage and ring groove, which affects the normal operation of the equipment; If too much lubricating oil enters the air system and cannot be discharged in time, when the mixed gas of air and oil vapor reaches a certain concentration ratio, it may cause burning and explosion. Therefore, the assembly direction of the scraper ring must be correct, otherwise it will not function as expected.
This article was edited and reproduced by China DSNEAIR Compressor Manufactory (https://air-compressor.net).