vacuum pump oil separation cause analysis
Oil separation, also known as oil-gas separation element, is a very important part of oil lubricated rotary air compressor and vacuum pump. Its function is to separate the oil and air in the oil-gas mixture and make the oil return to the oil circulation system, so as to reduce the oil content in the outlet gas. Oil separation application is more in the oil type rotary vane pump. Generally speaking, the requirement of oil content for fuel injection vacuum pump is that the residual oil in outlet air after oil separation treatment is not more than 3ppm.
The excessive oil content in the air at the outlet of vacuum pump is usually called high oil consumption, also known as oil leakage. The problem of oil leakage has been a headache for manufacturers, sellers and users for a long time. If there is oil leakage in vacuum pump, it will not only pollute the environment, but also affect the quality of the products produced. It will also lead to the vacuum pump oil shortage and easy failure.
Generally speaking, oil leakage is closely related to the following factors: oil quality problems, vacuum pump oil quality problems, improper oil separation installation, etc. In the actual processing process, we found that most of the fault complaints are not caused by the quality problems of oil. In practice, we concluded that the following situations will also lead to oil leakage:
1. The oil return pipeline is blocked
If the oil return pipeline is blocked, the oil separated from the filter element cannot be recovered to the oil tank. Check whether the pipeline is blocked and clean it in time.
2. Installation not in place
Some people will wonder why the newly purchased oil will smoke and run away after being installed separately. The reason is that the sealing ring at the top of the oil mist separator is not installed in place.
3. Quality problems of vacuum pump oil
There are a lot of cheap vacuum pump oil on the market. Many customers buy cheap oil in order to save cost, but they don't consider that if the quality of the oil is not good, the service life of the oil will be greatly shortened. After a long time, there will be oil glue in the pump body, which will lead to pipe blockage and screw stuck. These maintenance costs are much higher than the money you save by buying oil.
Solution: find out the cause of high temperature, solve the problem, reduce the temperature, and select the oil with good quality as far as possible.