Introduction of hydraulic oil filter

Introduction of hydraulic oil filter


The quality of hydraulic oil has a great impact on the working performance of the hydraulic system. Many faults are caused by it. To prevent oil pollution, install a hydraulic oil filter in an appropriate place, which can intercept the pollutants in the oil, keep the oil clean, and ensure the normal operation of the oil system.

Hydraulic oil filter can be divided into surface type, depth type and magnetic filter according to filter material. Their filtration of solid pollutants is accomplished by direct interception and adsorption.

The main function of hydraulic oil filter is to filter hydraulic oil, and various impurities are inevitable in the hydraulic system. The main sources are: mechanical impurities remaining in the hydraulic system after cleaning, such as water rust, casting sand, welding slag, iron filings, coating, paint skin and cotton yarn filings, and impurities entering the hydraulic system externally, such as dust entering through the oil filler and dust ring; Impurities generated in the working process, such as the fragments formed by the hydraulic action of the seal, the metal powder generated by the relative wear of the moving parts, and the colloid, asphaltene, carbon slag, etc. produced by the oxidative deterioration of the oil. After the above impurities are mixed into the hydraulic oil, with the circulation of the hydraulic oil, they will play a destructive role everywhere, seriously affecting the normal operation of the hydraulic system, such as making the small gap (calculated by) between the relatively moving parts in the hydraulic elements, as well as the throttling holes and gaps stuck or blocked; Destroy the oil film between relative moving parts, scratch the clearance surface, increase internal leakage, reduce efficiency, increase heating, intensify the chemical action of oil, and deteriorate the oil. According to production statistics, more than 75% of the faults in the hydraulic system are caused by impurities in the hydraulic oil. Therefore, it is very important for the hydraulic system to maintain the cleanliness of the oil and prevent oil pollution.