The oil filter in the lubrication system must be strictly filtered before the oil is sent to the friction surface in order to make the oil flow in the lubrication system unobstructed and prevent impurities from scratching and scratching the surface of the parts. In order to achieve a satisfactory filtering effect without increasing the resistance of the oil circuit, generally the coarse filter is connected in series with the main oil channel, and the fine filter is connected in parallel with the main oil channel.
Float type oil filter, in order to make the oil pump work well, the large particles of impurities in the lubricating oil must be removed before entering the oil pump. This task is undertaken by the filter. It is connected to the oil inlet of the oil pump. When the oil pump is working, the oil is sucked from the slit between the cover and the float. After filtering out the coarse impurities through the filter screen, it enters the oil pump through the oil pipe welded on the float. When the filter screen is clogged, the suction force of the oil inlet pipe increases, overcoming the strength of the filter screen to make the bad mouth leave the cover, and the oil directly enters the oil suction pipe from the ring port without passing through the filter screen.