What type of oil should be added to the vacuum pump?
Vacuum pumps are commonly used equipment in industrial production and laboratories, and their normal operation cannot be separated from suitable lubricants. Different types of vacuum pumps have different requirements for lubricating oil. Choosing the right oil can not only extend the life of the equipment, but also improve work efficiency. This article will combine the hot topics and hot content on the Internet in the past 10 days to provide you with a detailed analysis of what type of oil should be added to the vacuum pump, and provide structured data for reference.
1. Principles for selecting vacuum pump oil
1.Viscosity requirements: The viscosity of vacuum pump oil directly affects the pumping speed and sealing performance of the pump. Generally, low-viscosity oil is suitable for high-speed rotating vacuum pumps, while high-viscosity oil is more suitable for high-load conditions.
2.Antioxidant: Vacuum pump oil needs to have good oxidation resistance to prevent the oil from deteriorating at high temperatures.
3.Anti-emulsification: Prevent oil from emulsifying after mixing with water vapor, which will affect the performance of the pump.
4.Brand and model match: Different brands of vacuum pumps have specific requirements for oil products, and you must strictly refer to the equipment instructions.
2. Recommended models of common vacuum pump oils
| Vacuum pump type | Recommended oil model | Applicable scenarios |
|---|---|---|
| Rotary vane vacuum pump | ISO VG 68 or VG 100 | General industrial use |
| screw vacuum pump | Synthetic oil (such as PAO) | High load, high temperature environment |
| dry vacuum pump | No need to refuel (special design) | Laboratory without oil contamination requirements |
| Liquid ring vacuum pump | Water or special working fluid | Chemical and pharmaceutical industries |
3. Hot topics on the Internet: Misunderstandings about the use of vacuum pump oil
1.Myth 1: Ordinary engine oil can replace vacuum pump oil
During the discussion in the past 10 days, many users mistakenly believed that ordinary engine oil can replace vacuum pump oil. In fact, ordinary engine oil lacks the antioxidant and anti-emulsification properties required for vacuum pump oil, and long-term use will cause wear of the pump body.
2.Misunderstanding 2: The higher the oil model, the better
Some users believe that high viscosity oil can provide better lubrication effect, but too high viscosity will increase energy consumption and reduce air pumping efficiency. The appropriate model needs to be selected according to the speed and working conditions of the pump.
4. Vacuum pump oil replacement cycle recommendations
| Usage environment | Recommended replacement cycle |
|---|---|
| General industrial environment | Every 6 months or 500 hours |
| High temperature or high load environment | Every 3 months or 300 hours |
| Laboratory clean environment | Every 12 months or 1000 hours |
5. How to judge whether the vacuum pump oil needs to be replaced?
1.observe color: New oil is usually light yellow. If it turns into dark brown or black, it means it has been oxidized.
2.Check viscosity: Measure with a viscometer. If the viscosity changes by more than 10%, it needs to be replaced.
3.Check for sediment: The presence of particles or sediments in the oil indicates that the oil is contaminated.
6. Conclusion
Choosing the right vacuum pump oil is key to ensuring efficient operation of your equipment. This article combines recent hot discussions to summarize the oil selection principles, common model recommendations and misunderstandings in use, and provides structured data for reference. It is recommended that users regularly check the oil status and maintain it in strict accordance with equipment requirements to extend the service life of the vacuum pump.
check the details
check the details
en
