Air hydraulic filters used in light vehicles (including cars and mini-cars) are generally single-stage. Its shape is oblate or elliptical and flat. The filter material is a filter paper or a nonwoven fabric. The filter end cap is made of metal or polyurethane and the outer casing is made of metal or plastic. At the rated air volume flow rate, the original filtration efficiency of the filter element should be no less than 99.5%.
Due to the harsh working environment, heavy-duty vehicles must have a large number of air hydraulic filters. The first stage is a cyclone prefilter (such as blade ring, swirl tube, etc.), used to filter out coarse particle impurities, the filtration efficiency is above 80%, and the second stage fine filter is a microporous paper filter (generally called the main Filter element), its filtration efficiency is over 99.5%. There is also a safety filter element behind the main filter element to prevent dust from entering the engine when the main filter element is installed and replaced, or when the main filter element is accidentally damaged. The material of the safety core is mostly non-woven fabric, and also uses filter paper.
Wet air hydraulic filter, including oil immersion and oil bath.
The oil immersion type is to separate the impurities in the air through an oil-impregnated filter element, and the filter element material has a metal wire fabric and a foaming material. The oil bath type introduces the sucked dusty air into the oil pool to remove most of the dust, and then further filters the oil misted air through a filter element wound by the wire, the oil droplets and the stopped oil. The dust returns to the oil pool together. Oil bath air hydraulic filters are now commonly used in agricultural machinery and marine power.
The oil hydraulic filter is located in the engine lubrication system. Its upstream is the oil pump, and downstream is the parts of the engine that need lubrication. The function is to filter harmful impurities in the oil from the oil sump, and supply the lubricating oil to the motion pair such as the crankshaft, the connecting rod, the camshaft, the supercharger and the piston ring to play the role of lubrication, cooling and cleaning. Extend the life of these components.www.inocofiltration.com