1. Maintenance of the air intake air filter element.
The air filter is a component that filters out air dust and dirt. The filtered clean air enters the screw rotor compression chamber for compression. Because the internal gap of the screw machine only allows particles within 15u to be filtered out. If the air filter element is clogged and damaged, a large amount of particles larger than 15u will enter the internal circulation of the screw machine, which will not only greatly shorten the service life of the oil filter element and oil fine separation element, but also cause a large amount of particles to directly enter the bearing cavity, accelerate bearing wear and increase the rotor clearance. The compression efficiency is reduced, and the rotor may even become dry and seize to death.
It is best to maintain the air filter element once a week. Unscrew the gland nut, take out the air filter element, and use 0.2-0.4Mpa compressed air to blow away the dust particles on the outer surface of the air filter element from the inner cavity of the air filter element. Use a clean rag to Wipe the dirt on the inner wall of the air filter housing clean. Reinstall the air filter element, making sure that the sealing ring at the front end of the air filter element fits tightly with the inner end surface of the air filter housing. The maintenance of the diesel engine intake air filter of the diesel-powered screw engine should be carried out simultaneously with the air compressor air filter, and the maintenance methods are the same. Under normal circumstances, the air filter element should be replaced every 1000-1500 hours. In places where the environment is particularly harsh, such as mines, ceramic factories, cotton spinning mills, etc., it is recommended to replace the air filter element every 500 hours. When cleaning or replacing the air filter element, the components must be matched one by one to prevent foreign matter from falling into the intake valve. Regularly check whether the air intake telescopic tube is damaged or flattened, and whether the connection between the telescopic tube and the air filter intake valve is loose or leaking. If found, it must be repaired and replaced in time.
2. Replacement of oil filter.
The oil core should be replaced after the new machine has been running for 500 hours. Use a special wrench to counter-rotate the oil filter element to remove it. It is better to add screw oil before installing the new filter element. To seal the filter element, screw it back to the oil filter seat with both hands and tighten it firmly. It is recommended to replace the new filter element every 1500-2000 hours. It is better to replace the oil filter element at the same time when changing the engine oil. When used in harsh environments, the replacement cycle should be shortened. It is strictly forbidden to use the oil filter element beyond the specified period. Otherwise, due to the serious blockage of the filter element and the pressure difference exceeding the tolerance limit of the bypass valve, the bypass valve will automatically open and a large amount of stolen goods and particles will directly enter the screw host with the oil, causing serious consequences. The replacement of diesel engine oil filter element and diesel filter element of diesel driven screw engine should follow the maintenance requirements of diesel engine. The replacement method is similar to that of screw engine oil element.
3. Maintenance and replacement of oil and fine separators.
The oil and fine separator is a component that separates the screw lubricating oil from the compressed air. Under normal operation, the service life of the oil and fine separator is about 3,000 hours, but the quality of the lubricating oil and the filtration accuracy of the air have a huge impact on its life. It can be seen that in harsh operating environments, the maintenance and replacement cycle of the air filter element must be shortened, and even the installation of a pre-air filter must be considered. The oil and fine separator must be replaced when it expires or when the pressure difference between the front and rear exceeds 0.12Mpa. Otherwise, the motor will be overloaded, the fine oil separator will be damaged, and the oil will leak out. Replacement method: Remove each control pipe joint installed on the oil and gas barrel cover. Take out the oil return pipe extending into the oil and gas barrel from the cover of the oil and gas barrel, and remove the fastening bolts of the upper cover of the oil and gas barrel. Remove the upper cover of the oil and gas barrel and take out the oil and fine separator. Remove asbestos pads and dirt stuck to the upper cover. Install the new oil fine separator. Note that the upper and lower asbestos pads must be stapled and stapled. The asbestos pads must be arranged neatly when compressed, otherwise they will cause pad flushing. Reinstall the upper cover, oil return pipe, and control pipes as they are, and check for leaks.
Post time: Nov-09-2023
