How about hydraulic oil filtration equipment?

Hydraulic oil filtration equipment is a key equipment used in the industrial field to purify hydraulic system oil. It can effectively remove moisture, gas, particulate contaminants and oxidation products in the oil, thereby extending the service life of the oil, protecting hydraulic components (such as pumps, valves, cylinders) and improving system stability. The following is a comprehensive analysis of hydraulic oil filtration equipment:

Core performance parameters

1. Filtration accuracy:

- Ordinary system: 5~10 microns (ISO 4406 18/16/13).

- Precision system: 1~3 microns (ISO 4406 15/13/10).

2. Flow range:

- Small equipment: 20~100 L/min (such as an injection molding machine).

- Large equipment: 200~1000 L/min (such as shield machine hydraulic station).

3. Water removal capacity:

- Vacuum type: can reduce moisture to ≤50ppm.

- Coalescing type: reduced to ≤100ppm.

4. Pressure resistance level:

- Standard type: 0.6~1.0 MPa.

- High pressure type: ≥2.5 MPa (applicable to servo system).

Typical application scenarios

1. Engineering machinery:

- Online filtration of hydraulic oil of excavators and cranes to prevent valve core jamming.

2. Power industry:

- Purification of hydraulic oil of the hydropower station to avoid moisture corrosion of the servo valve.

3. Manufacturing industry:

- Maintenance of the hydraulic system of the stamping machine to reduce oil change costs.

Purchase suggestions

1. Choose according to pollution type

- Mainly particle pollution: choose a high-precision cartridge oil filter (such as Pall Ultipor filter element).

- Mainly water pollution: vacuum or coalescence separation model.

- Comprehensive pollution: multi-stage filtration equipment (such as centrifugal impurity removal first, then vacuum dehydration).

2. Brand recommendation

- High-end: Germany's HYDAC, the United States' Pall.

- Cost-effective: China National Machinery Industry Corporation, Chongqing SINO-NSH.

- Special needs: Switzerland's GlobeCore (integrated heating, vacuum, and coalescence functions).

3. Cost considerations

- Initial investment: electrostatic adsorption equipment (about $10,000) > vacuum oil filter (about $5,000) > coalescence separator (about $3,000).

- Long-term cost: filter element replacement cost (coalescing type) vs. energy consumption cost (vacuum type).

Key points for use and maintenance

1. Regularly monitor the oil:

- Evaluate the filtration effect through a particle counter (such as ISO 4406) and a moisture detector (Karl Fischer method).

2. Filter element replacement cycle:

- Pressure differential alarm or replacement every 500~1000 hours (depending on the degree of contamination).

3. Safe operation:

- Avoid high temperature burns (the oil temperature of the vacuum model can reach 60~80℃).

- Explosion-proof design is used in flammable environments (such as coal mine hydraulic supports).

Common Problem Solving

- Problem 1: The oil is still turbid after filtration

Reason: The filter element is not accurate enough or the water is not completely removed.

Solution: Upgrade to a 1 micron filter element + vacuum dehydration.

- Problem 2: The equipment is noisy

Reason: The pump intake or centrifugal rotor is unbalanced.

Solution: Check the sealing and exhaust the gas.

If you need specific model matching or technical solutions, you can communicate with me, I welcome consultation.