🌐 English Version · This is the English news article for industrial oil filtration industry updates.

MAINTENANCE GUIDE

Vacuum Oil Purifier Industry Update

Proper maintenance of vacuum oil purifiers is essential for ensuring long-term reliability and performance. This guide covers best practices for daily operation, routine inspection, and periodic servicing of industrial oil filtration equipment.

Maintenance Best Practices

1. Daily Inspection Checklist

Check vacuum pump oil level daily. Inspect all pipe connections, valves, and flanges for leaks. Record key operating parameters including vacuum degree, temperature, flow rate, and pressure.

2. Periodic Filter Replacement

Filter elements should be replaced based on pressure differential indicators. Typical replacement intervals range from 3-6 months depending on oil contamination levels and operating conditions.

3. Annual Service Requirements

Annual servicing should include vacuum pump oil change, seal inspection, sensor calibration, and electrical system testing to maintain optimal performance and prevent unplanned downtime.

Vacuum Oil Purifier Working Principle

A vacuum oil purifier operates on the principle of vacuum dehydration and degassing. The oil is first heated to an optimal temperature (typically 40-80°C), then exposed to high vacuum conditions inside a vacuum chamber. Under reduced pressure, water boils and evaporates at much lower temperatures, and dissolved gases are released. The dehydrated and degassed oil then passes through multi-stage precision filters to remove solid particles. The result is clean oil with significantly improved dielectric strength, viscosity, and chemical stability.

Two-Stage Vacuum Oil Purifier

For applications requiring ultra-high cleanliness (such as EHV/UHV transformer oil, nuclear power, and aerospace), a two-stage vacuum oil purifier uses two vacuum pumps in series — typically a Roots pump followed by a rotary vane pump — to achieve vacuum levels below 5 Pa. This enables moisture reduction to below 5 ppm and gas content below 0.05%, meeting the most stringent cleanliness standards in the industry.

Application Areas

Power Transformer

High-Voltage Insulating Oil

Industrial Lubricating Oil

Hydraulic Oil

Turbine Oil

Steel Mill

Petrochemical

Rail Transit

Wind Power

Conclusion

As industrial oil cleanliness requirements continue to rise, vacuum oil purifiers and two-stage vacuum oil purifiers have become essential equipment across multiple industries. Chongqing Yanneng Oil Filter Machine Co., Ltd. is committed to providing high-quality oil filtration solutions to help industrial customers achieve reliable operation, extend equipment service life, and reduce maintenance costs.

Need Expert Advice on Oil Filtration?

Contact Yanneng for vacuum oil purifiers, two-stage vacuum oil purifiers, and custom oil filtration solutions.
Service Hotline: 400-023-9089 · Email: info@yanneng.com