What are the reasons for incomplete filtration in a vacuum oil purifier?
Characteristics of Oil Filters and Factors Influencing Selection Accuracy
1. Why does the oil temperature of a hydraulic oil filter rise?
There are two primary causes of rising oil temperature: insufficient oil level and oil contamination. In the former case, the issue may stem from the equipment’s design or from a leak in the hydraulic oil filter. In the latter case, the main culprit is likely a clogged filter, which in turn leads to an increase in oil temperature.
2. How do air bubbles form in hydraulic oil filters?
When the filter becomes clogged or air passes through loose components, the anti-foaming additives in the engine oil will lose their effectiveness, leading to foam formation.
3. Why does oxygen increase the viscosity of oil?
Under normal conditions, the viscosity of engine oil does not change over long periods of use, except for oxidation. Experience has shown that, over time, oil viscosity tends to decrease; however, as oxidation progresses, viscosity will increase.
4. The issue of oil color in the hydraulic oil filter.
Under normal circumstances, the color of oil that has been used for an extended period may darken due to the presence of pigments; however, this discoloration does not affect the oil’s quality. Therefore, you should not rely on the oil’s color to assess its quality.
1. Oil demand. For example, insulating oil can achieve high dielectric strength only through highly precise filtration, whereas the requirements for impurities in large‑module gears are considerably more lenient.
2. Oil viscosity. High-viscosity oils cannot pass through fine screens, so the filtration accuracy must be reduced.
What are the reasons for incomplete filtration in a vacuum oil purifier?
1. The oil in the vacuum oil filter does not meet specifications.
Insulating oil can achieve high dielectric strength only through high‑precision filtration, whereas most vacuum oil filters have much more lenient specifications for impurities.
II: Oil Viscosity
High-viscosity oils cannot pass through the fine mesh of a vacuum oil filter and must be filtered out using a coarser‑grade screen. However, if one focuses solely on oil cleanliness and employs a fine‑mesh filter, the operating costs of the vacuum oil filtration system will rise. Since the filter element clogs frequently, it must be cleaned or replaced often.
Third, increase or decrease the axial pressure.
Increasing the axial pressure of a vacuum oil filter can enable the oil to pass through the filter mesh more rapidly, but it often damages the filter element.
4: Oil filter port blockage
The vacuum oil filter requires regular cleaning to keep the equipment clean. The bolts connecting the motor to the vacuum oil filter bracket should be inspected frequently to prevent loosening. Lubricant should always be applied to the compression nut.
V. Fuel Level Control
The vacuum oil filter operates according to its filtration capacity. After circulating and filtering 2 to 3 times the volume of oil, unscrew the drain plug, collect an oil sample, and continue until the sample meets the required specifications.
6: Excessive engine oil label
When the vacuum oil filter is in operation, pay attention to the oil level indicator. If there is too much oil in the oil pan, open the return valve to drain the oil from the pan, then close the return valve.
Related Information
What should you pay attention to when purchasing a vacuum oil purifier?
When purchasing a vacuum oil filter, the first step is to understand the functions of the different types available, and then choose the one that best suits your needs.
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