How to filter hydraulic oil cleanly?

1. Physical removal method

Physical removal methods refer to the use of physical principles to purify hydraulic oil, including centrifugal separation, oscillating screening, gravity sedimentation, adsorption, and others. Centrifugal separation and gravity sedimentation are the most common physical removal methods.

Centrifugal separation refers to separating impurities in hydraulic oil from the oil by rotating a centrifuge to achieve purification. This method is suitable for situations where the impurity particles are large and heavier than the oil.

Gravity sedimentation refers to a method of leaving the hydraulic oil to stand for some time, allowing the sediment to sink to the bottom, and then sucking out the clean hydraulic oil on the top to achieve purification. This method is suitable for situations where the impurities are relatively small and weigh less than the oil.

2. Chemical removal method

Chemical removal method refers to a method of converting impurities in hydraulic oil into other substances by chemical reactions to achieve purification. Commonly used chemical removal methods include pickling, alkali washing and additive methods.

Pickling refers to the use of an acidic solution to convert impurities in hydraulic oil into sediments, and then separate the supernatant hydraulic oil. The alkaline washing method refers to the use of an alkaline solution to convert impurities in hydraulic oil into sediments, and then separate the supernatant hydraulic oil. The additive method refers to the method of purifying by adding specific additives to adsorb, disperse, or convert impurities in hydraulic oil.

3. Filtration method

The filtration method refers to the method of filtering impurities in hydraulic oil through filters to achieve purification. Filters can be divided into mechanical filters and high-efficiency filters.

Mechanical filters refer to filters made of materials such as meshes, apertures and fibers to filter out impurities in hydraulic oil. This method is suitable for hydraulic systems with large impurities and large particles. High-efficiency filters refer to filters made of high-density filter elements, electronic filter elements, activated carbon filter elements and other technologies, which can effectively filter out tiny impurities in hydraulic oil and are suitable for high-precision and high-reliability hydraulic systems.

In general, different hydraulic systems require different removal methods. At the same time, hydraulic oil should also be replaced and maintained regularly to ensure the normal operation and long life of the hydraulic system.

This article introduces three methods for removing hydraulic oil: physical removal, chemical removal and filtration. In practical applications, it is necessary to ｓｅｌｅｃｔ appropriate methods for hydraulic oil purification based on the characteristics and requirements of different hydraulic systems to ensure the normal operation and long life of the hydraulic system.