Oil contamination in hydraulic systems is a major cause of hydraulic failures. When pollutants enter the system, they can accelerate the wear, tear, burn, or even damage of hydraulic components, or cause valve failure or noise. Pollutants can block the throttle holes or gaps of hydraulic components, alter the working performance of the hydraulic system, cause movement disorders or even complete failures, and lead to accidents caused by misoperation. Dust particles inside the hydraulic cylinder can accelerate the damage of seals, strain the inner surface of the cylinder, increase leakage, cause insufficient thrust or unstable movement, crawling, and speed reduction, resulting in abnormal sounds and vibrations. It may also cause blockage of the filter screen, making it difficult for the hydraulic pump to suction oil and return oil smoothly, resulting in cavitation, vibration, and noise. In severe cases of blockage, the filter screen may be punctured due to excessive resistance, completely losing its filtering function and causing a vicious cycle in the hydraulic system. Therefore, it is necessary to strengthen management, prevent oil contamination, and ensure that the hydraulic system can operate safely and reliably. Please note the following points:
(1) The harm caused by oil pollution to hydraulic systems: blocking the clearance between hydraulic components such as pumps and valves, blocking the throttle holes, damping holes, and valve ports in hydraulic components, making the components unable to work properly; Dirt entering the clearance between the relative moving parts of hydraulic components can scratch the mating surface, damage the accuracy and surface roughness of the mating surface, accelerate wear, increase component leakage, and sometimes cause the valve core to get stuck, resulting in component malfunction; There is too much dirt in the oil Oil pump suction: The oil filter mesh is blocked, causing excessive suction resistance and preventing the oil pump from working properly, resulting in noise and vibration; The dirt in the oil can cause the oil to deteriorate. Mixing water into oil can cause emulsification, reduce the lubricating performance of the oil, increase the acid value of the oil, shorten the service life of components, and increase leakage.
(2) Measures to prevent oil contamination. Many common faults in hydraulic systems are caused by unclean oil. So, keeping the oil clean is an important aspect of maintaining hydraulic equipment. There are several measures to prevent oil contamination, including keeping the area around the fuel tank clean and sealing it with a lid; The oil in the fuel tank should be replaced regularly, usually after working for 1000 hours. When injecting oil, it should pass through a filter with a mesh size of 120 or more; Regularly check and clean the filter; Regularly clean hydraulic components with kerosene and unclog pipelines; Regularly inspect the pipe joints and sealing devices between pipelines and components.
Hebei Yaoruida Electromechanical Technology Co., Ltd. is a high-tech enterprise that integrates the research and development, design, production, and sales of coal mining machinery and equipment.
The main products include: ZQJC column mounted pneumatic drilling rig, ZYJ column mounted hydraulic drilling rig, CMS1 crawler tunnel drilling vehicle, anchor rod drilling rig, ZLJ tunnel drilling rig and other engineering and mining machinery production enterprises.
