Prevent the crankcase lubricating oil from leaking along the piston rod to the cylinder side, effectively reducing the consumption of lubricating oil and preventing the working gas in the cylinder from being polluted by oil
Under the action of the fastening spring force, the oil scraper ring holds or the plug rod, scrapes the lubricating oil on the piston rod through the oil scraping knife edge on the inner circle, and returns to the crankcase along the oil return passage of the oil scraping ring box.
Material selection and design of scraper ring
The refined oil scraper uses a unique material formula. Under the premise of ensuring sufficient strength, the toughness of the material is greatly improved, so that the scraper blade and the piston rod are more conformable, and the scraping effect is better.
The spring force calculation is the most important factor affecting the working of the oil scraping ring. If the spring force is too small, the oil scraping ring will not be able to hold the piston rod to complete the oil scraping; if the spring force is too large, the scraping oil ring edge and the piston rod will be too tightly attached. The large amount of frictional heat generated will greatly increase the surface temperature of the piston rod, which will not only make the oil scraper blade overheat and deform, but will not fit well with the piston rod. And it will directly affect the safety of compressor operation.
Through long-term experience accumulation and continuous scientific experiments, Jingdi has obtained a set of perfect spring force calculation formulas, which can accurately calculate the most suitable spring force according to different piston rod diameters to ensure the effective and safe oil scraping ring. Finish the scraping work.
The two scraper rings are combined by a pin hole structure, and the slits are staggered to prevent leakage of lubricating oil
The pulsating seal ring can reduce the adverse effects of oil and gas pulsation on the scraper ring, so that the scraper ring can work normally, and prevent the gaseous medium from entering the crankcase.
The three scraper rings are combined by a pinhole structure to enhance the scraping effect. The slits are staggered from each other to prevent leakage of lubricating oil.