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Time：2025-03-14 10:48:54 Reading volume：
The dehydration principle of the vacuum oil filter is mainly based on vacuum distillation and physical separation technology. By reducing the ambient pressure (vacuum) and heating the oil, the water evaporates at low temperature, thereby achieving oil-water separation. The following is a detailed dehydration principle and working process:
1. Vacuum environment reduces boiling point
Under normal pressure, the boiling point of water is 100°C, but in a vacuum environment, the boiling point of water will be significantly reduced. For example:
- When the pressure drops to -0.08 MPa, the boiling point of water is about 60°C.
- When the pressure drops to -0.095 MPa, the boiling point of water is about 40°C.
In this way, the water in the oil can evaporate at a lower temperature, avoiding oxidation or deterioration of the oil due to high temperature.
The oil is heated to a certain temperature (usually 40°C~70°C) through a heater to promote water evaporation.
The evaporated water is pumped out by the vacuum pump, while the oil will not evaporate due to its high boiling point, thus achieving oil-water separation.
1. Oil pretreatment
- The oil first passes through the coarse filter to remove large particles of impurities.
- Entering the heater, the oil is heated to the set temperature.
2. Vacuum dehydration
- The heated oil enters the vacuum separation tank, and the water evaporates rapidly under the vacuum environment.
- The evaporated water vapor is pumped out by the vacuum pump and condensed into liquid water through the condenser and discharged.
3. Deep filtration
- The dehydrated oil passes through the fine filter to further remove tiny particles and residual water.
- Finally, the clean and dry oil is transported back to the equipment or oil storage tank.
1. Vacuum control
- The higher the vacuum degree, the lower the boiling point of water and the higher the dehydration efficiency.
- Usually the vacuum degree of the vacuum oil filter is -0.08 MPa ~ -0.095 MPa.
2. Temperature control
- Too high temperature will cause oil oxidation, and too low temperature will result in insufficient dehydration efficiency.
- The general heating temperature is 40°C~70°C, which is adjusted according to the type of oil.
3. Oil atomization
- In the vacuum separation tank, the oil forms fine oil droplets through the atomization device, which increases the surface area of the oil and accelerates the evaporation of water.
4. Multi-layer filtration
- Coarse filter: removes large particles of impurities (such as metal chips and dust).
- Fine filter: removes tiny particles (such as colloids and carbides).
Vacuum oil filters are widely used in the following fields:
1. Power industry
- Dehydration and purification of transformer oil and turbine oil.
2. Machinery manufacturing
- Treatment of hydraulic oil and lubricating oil.
3. Petrochemical industry
- Purification of fuel oil and base oil.
4. Other fields
- Shipbuilding, metallurgy, papermaking and other industries.
1. Efficient dehydration
- It can remove free water, emulsified water and dissolved water in oil.
2. Protect oil performance
- Low temperature dehydration avoids oil oxidation and prolongs service life.
3. Automated operation
- Modern vacuum oil filter is equipped with an automatic control system and is easy to operate.
4. Environmental protection and energy saving
- Oil can be recycled to reduce resource waste.
1. Oil type
- Different oils (such as transformer oil and hydraulic oil) need to adjust the heating temperature and vacuum degree.
2. Equipment maintenance
- Clean the filter element regularly and check the vacuum pump and heater.
3. Safe operation
- Avoid high temperature burns and ensure that the equipment is well grounded.
If you have a specific device model or usage scenario, please tell me and I can provide more targeted suggestions!
