Lubricating oil filter function and principle

Improved high performance engines and new emission standards have a major impact on the development of lubricants and lubricant filters. As manufacturers continue to develop more advanced engines, new grading standards for lubricants are constantly being developed.

Clean lubricants are critical to engine performance

These new lubricants play a vital role in protecting the internal combustion engine by reducing friction and wear, cooling engine parts, sealing the combustion chamber, cleaning engine components and suppressing corrosion. Lubricating oil filters remove harmful impurities from lubricating oil and also play an important role in protecting the engine.

Lubricating oil filter captures oil impurities in two ways

As the lubricating oil flows through the filter, some of the particles adhere to the filter paper. These particles themselves adhere to the surface of the filter paper and do not block the pores of the filter paper.

Other particles are trapped in the filter paper due to the pressure of the lubricating oil passing through the filter.

Top-in type lubricating oil bag filter

Features of the top-in type lubricating oil bag filter: The inner space of the filter is more fully used, and the space waste of the traditional side-entry type is eliminated. Opening the upper cover can quickly and easily replace the filter bag, unlike the conventional side-entry type, the filter bag is taken out. The ring can be replaced, which reduces the chance of secondary pollution. The liquid inlet pipe is wide and smooth, and the inside of the top cover is horn type. After the liquid enters, it can be automatically divided. The impact on the filter bag is small, and the filtration is faster and more stable. When the liquid enters the side-entry filter, turbulence is generated inside, and the pressure loss is large, and the filter bag may be turned inside the filter, causing the filter bag to be accidentally broken. The filter bag adopts a patented ring mouth, which is closely attached to the filter, does not loosen, and has multiple seals, and the sealing effect is better.

The quality of hydraulic oil has a great influence on the working performance of hydraulic system. The root cause of many faults is its origin. It prevents oil pollution. Install hydraulic oil filter in the proper place, it can retain the pollutants in the oil and keep the oil clean. To ensure the normal operation of the oil system.

The hydraulic oil filter can be divided into surface type, depth type and magnetic filter according to the filter material. Their filtration of solid contaminants is accomplished by direct blocking and adsorption.

The main function of the hydraulic oil filter is to filter the hydraulic fluid, and various impurities are inevitably present in the hydraulic system. The main sources are: mechanical impurities remaining in the hydraulic system after cleaning, such as rust, cast sand, welding slag, iron filings, paint, paint and cotton yarn, etc., external impurities entering the hydraulic system, such as through the fuel filler and Dust entering the dust-proof ring; impurities generated during the working process, such as debris formed by the hydraulic action of the seal, metal powder generated by relative wear and movement, colloid, asphaltene, carbon residue, etc. due to oxidative deterioration of the oil . After the above impurities are mixed into the hydraulic oil, with the circulation of the hydraulic oil, the damage will be everywhere, which seriously affects the normal operation of the hydraulic system, such as making a small gap (measured) between the relatively moving parts of the hydraulic components and throttling. Small holes and gaps are stuck or blocked; the oil film between the moving parts is destroyed, the gap surface is scratched, the internal leakage is increased, the efficiency is lowered, the heat is increased, the chemical action of the oil is aggravated, and the oil is deteriorated. According to production statistics, more than 75% of the faults in the hydraulic system are caused by the mixing of impurities in the hydraulic oil. Therefore, it is important for the hydraulic system to maintain the cleanliness of the oil and prevent oil contamination.