Types of industrial oil filtration devices

There are many types of industrial oil filtration devices. According to the filtration principle, application scenario and oil characteristics, they can be mainly divided into the following categories:

Classification by filtration principle

(1) Mechanical filtration equipment

- Plate and frame oil filter

- Intercepting particulate impurities through filter paper/filter cloth

- Applicable to: high viscosity oil or oil containing a large amount of mechanical impurities (such as gear oil, rolling oil)

- Bag filter

- Use non-woven filter bags for filtration, easy to ｒｅｐｌａｃｅ

- Applicable to: Pre-filtration of lubricating oil and hydraulic oil

- Filter element filter

- Use metal mesh, glass fiber and other filter elements

- Applicable to: Online filtration of precision hydraulic systems

(2) Vacuum separation equipment

- Vacuum oil filter

- Through negative pressure dehydration and degassing, combined with precision filtration

- Applicable to: Insulating oil and light oil such as transformer oil and turbine oil

- Two-stage vacuum oil filter

- Two-stage vacuum tank, higher dehydration efficiency

Applicable to: Emulsified oil with extremely high water content

(3) Centrifugal separation equipment

- Centrifugal oil filter

- Uses centrifugal force to separate water and impurities

- Applicable to: Cutting fluid, heavily contaminated heavy oil

(4) Adsorption purification equipment

- Silica gel/molecular sieve oil filter

- Removes acidic substances and trace water through adsorbents

- Applicable to: Regeneration of aged transformer oil

- Electrostatic oil filter

- Adsorbs submicron particles using an electrostatic field

- Applicable to: Ultra-clean hydraulic oil

2. Classification by oil application

|                  Oil type                   |         Recommended filtering equipment          |

|----------------------------------|----------------------------------------------------|

| Transformer oil/insulating oil  | Vacuum oil filter, regeneration oil filter             |

| Turbine oil (steam turbine oil) | Vacuum oil filter, centrifugal oil filter                 |

| Hydraulic oil                            | Precision filter element, electrostatic oil filter    |

| Gear oil/heavy engine oil        | Plate and Frame Oil Filter, Centrifugal Oil Filter |

| Cutting Fluid/Emulsified Oil    | Coalescing Separator, Magnetic Filter                |

3. Classification by Functional Characteristics

- Mobile Oil Filter: Wheeled design, suitable for on-site maintenance

- Online Oil Filter: Real-time circulating filtration to protect critical equipment

- Explosion-proof Oil Filter: For hazardous environments such as petrochemicals and coal mines

- Regenerative Oil Filter: Reduces acid value and restores oil performance

4. Special Filtration Technologies

- Coalescing Separation Technology: Demulsification and dehydration (e.g., lubricating oil with water content > 1000 ppm)

- Low-Temperature Vacuum Technology: Processing heat-sensitive oils (e.g., certain synthetic oils)

- Magnetic Filtration: Removal of ferromagnetic particles (e.g., rolling mill oil)

Key Selection Parameters

- Filtration Fineness: 1μm (precision hydraulic systems) to 50μm (coarse filtration)

- Flow rate: 5L/min (small) to 500L/min (industrial grade)

- Temperature range: -20°C (low-temperature oil) to 120°C (high-temperature oil)

If you require recommendations for specific oils or scenarios, please provide detailed operating requirements (such as oil type, contamination level, and flow rate requirements).