Equipment for removing particulate impurities from the air. When piston machinery (internal combustion engine, reciprocating compressor, etc.) is working. ), if the inhaled air contains dust and other impurities, it will aggravate the damage of the parts, so be sure to be equipped with an air filter. The air cleaner consists of a filter element and a housing. The key requirements for an air filter are high filtration efficiency, low flow resistance, and long-term continuous use without maintenance. Next, I will introduce the air filter What is an air filter: Air filter (AirFilter) is mainly used in pneumatic machinery, internal combustion machinery and other fields. Its function is to provide clean gas for these industrial equipment, avoid these industrial equipment from inhaling gas containing impurity particles during work, and increase the probability of corrosion and damage. . The key components of the air filter are the filter element and the shell, in which the filter element is the main filtering part, which undertakes the filtration of the gas, and the shell provides the necessary external structure for the filter element. The work requirement of the air filter is to undertake high-efficiency air filter work, without increasing the excessive resistance of air flow, and to work continuously for a long time. It also has different degrees of application in the hydraulic system of hydraulic machinery, the key is to adjust the pressure difference between the inside and outside of the oil tank of the hydraulic system. Steps: When maintaining the air filter, the color and contrast of the filter paper on the inner and outer surfaces of the paper filter element should be carefully checked. The color of the used filter element is gray-black due to the dust deposited on the outer surface of the side exposed to the atmosphere; the inner surface of the filter paper on the air inlet side should still show a natural color. If the dust on the outer surface of the filter element is removed and the true color of the filter paper can be displayed, the filter element can continue to be used. When the outer surface of the filter element is removed dust, the true color of the paper is no longer displayed, or the color of the inner surface of the filter paper becomes dark, the filter element must be replaced. The working condition of the air filter and when it must be maintained or replaced can be identified by the following methods: In theory, the service life and maintenance interval of the air filter should be considered in terms of the ratio of the air flow to the filter element to the air pressure required by the engine. When the flow rate exceeds the flow rate, the filter works normally; when the flow rate is equal to the flow rate, the filter should be maintained; when the flow rate is less than the flow rate, the filter cannot continue to be used, otherwise the working conditions of the engine will get worse and worse, or even fail to work. . In specific work, when the air filter element is blocked by suspended particles and cannot meet the air flow required for the engine to work, the engine runs abnormally: such as muffled sound, slow acceleration (insufficient air intake, insufficient cylinder pressure); Work fatigue (the mixture is too rich and the combustion is incomplete); the water temperature is relatively increased (the combustion continues when entering the exhaust stroke); the exhaust smoke increases when accelerating. When these symptoms occur, it can be judged that the air filter is blocked, and the filter element should be removed for maintenance or replacement in time. When maintaining the air cleaner element, pay attention to the color change of the inner and outer surfaces of the element. After dust removal, if the color of the outer surface of the filter paper is clear and the surface is beautiful, the filter element can continue to be used; if the outer surface of the filter paper loses its color or the inner surface is dark, it must be replaced!
Post time: Jul-18-2022