The function of oil-water separation in diesel filter

The oil-water separator on the diesel engine, because there is water in the diesel oil, the oil-water separator uses the different proportions of oil and water. After passing through the separator, the water is stored below. When the water is stored to a certain amount, the indicator light lights up to alarm.

The oil-water separation filter element is mainly designed for oil-water-liquid separation. It contains two kinds of filter elements, namely: coalescing filter element and separation filter element.

For example, in the oil dewatering system, after the oil flows into the coalescing separator, it first flows through the coalescing filter element. The coalescing filter element filters out solid impurities and coalesces extremely small water droplets into larger water droplets. Most of the coalesced water droplets can be separated and removed from the oil by their own weight and settled into the sump.

Most of the coalesced water droplets can be separated and removed from the oil by their own weight and settled into the sump. Then the oil product flows through the separation filter element. Since the separation filter element has good lipophilic and hydrophobic properties, the water is further separated, and finally, the clean, anhydrous oil product flows out of the coalescing separator.

The oil first enters the lower part of the filter housing from the inlet pipe, and then flows into the filter element from the outside to the inside. At this time, the coarser particles will immediately settle down and be released by the drain valve, and the smaller particles will be intercepted by the filter element. After the final clean oil is collected by the filter element tray, it flows out of the coalescer separator through the outlet pipe. With the increase of the amount of oil to be treated, the pollutants deposited on the filter element will cause the pressure difference of the coalescer to rise.

When the pressure difference rises to 0.15Mpa, it means that the coalescing filter element has been blocked and should be replaced. The oil flows into the first-stage tray from the oil inlet of the coalescing separator, and then diverts to the inside of the first-stage filter element. The water droplets settle in the sedimentation tank, and the oil enters the secondary filter element from the outside to the inside, collects in the secondary tray, and flows out from the outlet of the coalescing separator.

The material of the secondary filter element is hydrophobic, the oil can pass through smoothly, and the free water is blocked from the filter element, flows into the sedimentation tank, and is discharged through the drain valve.

Post time: Jun-01-2022