Industrial Oil Filtration Equipment Selection Guide

Industrial Oil Filtration Equipment Selection Guide: Key Factors and Purchasing Strategies

The selection of industrial oil filtration equipment directly affects the reliability of the lubrication system, equipment life and operating costs. The following is a systematic selection method to help you match the most suitable purification solution.

Clarify the filtering requirements

1. Oil type

The physical and chemical properties of different oils determine the filtering method:

- Mineral oil/synthetic oil: conventional filtration (vacuum, precision filter element)

- High viscosity oil (gear oil): heating is required to reduce viscosity (oil filter with heating function)

- Severely emulsified oil: Coalescence separation or centrifugal equipment is preferred

- Flammable oil (transformer oil): An explosion-proof vacuum oil filter is required

Example:

- Hydraulic oil NAS level 8 → needs to be filtered to below level 5, ｓｅｌｅｃｔ a precision filter element with β≥200

- Turbine oil water content 500ppm → vacuum oil filter is required to dehydrate to below 50ppm

Key equipment parameters

1. Filtration accuracy

- Coarse filtration: ≥10μm (protection of pumps and valves)

- Fine filtration: 1~5μm (servo system, bearing lubrication)

- Ultra-fine filtration: ≤1μm (aerospace, precision machine tools)

2. Flow matching

- Calculate the total oil volume of the system and ｓｅｌｅｃｔ a processing flow ≥ 20% of the system circulation volume

- Formula: Minimum flow (L/min) = Oil tank volume (L) × 0.2 / Estimated purification time (h)

3. Working environment

- Explosion-proof requirements: Petrochemical, coal mines and other scenes require Ex dⅡBT4 certification

- Temperature range: Heating function is required in cold areas (-20℃~80℃)

- Mobility requirements: Wheeled or containerized design

Value-added function considerations

1. Intelligent control

- Real-time monitoring of particle count and moisture content

- Automatic backwashing and blockage alarm (reduce manual intervention)

2. Energy efficiency design

- Variable frequency motor adjusts flow, saving more than 30% energy

- Heat recovery system (using waste heat to heat oil)

3. Compliance certification

- ISO 9001/CE/explosion-proof certification

- Meet the standards of GLD (gearbox manufacturer) and OEM equipment manufacturers

Pitfall Avoidance Guide

❌ Common Misunderstandings:

- Excessive pursuit of high precision (increases costs and may cause frequent clogging of filter elements)

- Ignoring the influence of oil temperature (high viscosity oil is not heated, resulting in a sharp ｄｒｏｐ in filtration efficiency)

- No room for upgrade (future oil standards will require equipment replacement)

✅ Professional advice:

- Give priority to modular design equipment to facilitate later functional expansion

- Require suppliers to provide oil sample test reports + purification effect commitments

- Consider consumable costs for long-term use (such as filter element replacement frequency)

Conclusion

The selection of industrial oil filtration equipment requires comprehensive technical, economic, and operational and maintenance factors. It is recommended to cooperate with professional manufacturers to ensure matching through the three-step method of oil sample testing → solution simulation, → pilot test. If specific equipment recommendations or solution optimization are required, customized suggestions for oil parameters can be provided!