A vacuum pump is a device that uses a certain method to pump air to a container to obtain a vacuum. It is a device that improves, generates and maintains a vacuum in a closed space. The vacuum pump oil has very good oxidation stability, is not easy to deteriorate, can reduce the formation of grease, and can be used for a long time without replacement. In addition, the vacuum pump oil has excellent corrosion resistance and can make the vacuum pump less prone to rust, because the special properties of this oil form a film on the surface of the vacuum pump to fully protect the vacuum pump, and due to the special nature of the oil, the vacuum pump oil can easily The water is separated to achieve the purpose of vacuum. The use of vacuum pump oil can also greatly increase the service life of the pump and save the cost of use. This is the essential reason why vacuum pumps need special vacuum pump oil. In the vacuum pump, the vacuum pump oil is not only used as the medium to obtain the vacuum, but also plays the role of lubricating, cooling and sealing the mechanical friction points. The main performance requirements of vacuum pump oil include the following: 1. Very low vapor pressure 2. Proper viscosity and good viscosity-temperature characteristics 3. Good thermal oxidation stability 4. Good corrosion resistance and demulsibility 5. Higher flash point 6. Lower ultimate pressure
In order to save costs, some users of rotary vane vacuum pumps use ordinary oil instead of special oil for vacuum pumps. In fact, this not only increases the use and maintenance costs of the vacuum pump to a certain extent, but also seriously affects the service life of the vacuum pump. In the rotary vane vacuum pump, the vacuum pump oil is not only used as the medium to obtain the vacuum, it also plays the role of lubricating, cooling and sealing the mechanical friction points. As an indispensable substance in the rotary vane vacuum pump, the existence of vacuum pump oil is Vacuum pumps bring many benefits.
In the process of using the rotary vane vacuum pump, the use of the special oil for the vacuum pump should be checked frequently. The emulsification, carbonization of the pump oil, the inclusion of impurities or unknown liquids, and the sudden increase of the vacuum pump oil must be replaced as soon as possible. At the same time, it must be confirmed that it is the same type of special oil for vacuum pumps, which can be purchased from a professional vacuum pump manufacturer to ensure the normal use of the vacuum pump. So some people will ask whether hydraulic oil can replace vacuum pump oil? The answer is no. Various oils have their own characteristics. Because hydraulic oils have to withstand a certain amount of pressure, they will generate more heat, so they must be able to withstand high temperatures. Vacuum oil plays a role of lubrication and sealing in the vacuum pump. Therefore, the vacuum pump oil should have a good lubrication effect. During the working process of the vacuum pump, the pump will compress the air and generate heat. Therefore, the vacuum pump oil is required to withstand a certain temperature; at the same time, the pump oil must be in contact with vacuum. Environment, so the pump oil is required to be non-volatile.
In addition, gasoline is absolutely not allowed. Gasoline is easily muddy and flammable. It is the power fuel for cars and motorcycles and has no lubrication function. The inside of the vacuum pump can be replaced with light engine oil or No. 20 transformer oil, that is, insulation, lubrication and heat dissipation.
Precautions for the use of vacuum pump oil: 1. In order to ensure the normal operation of the vacuum system, prevent contaminants such as mechanical impurities and water from entering during use, storage and transportation, so as not to affect the service life of the vacuum oil and the normal operation of the system. 2. Residual oil often contains a lot of pollutants and aging products, which will seriously affect the quality and life of the new oil. Therefore, when changing the oil, the oil tank and oil circuit should be cleaned. Pour new oil from the suction port of the pump, and slowly rotate the pump shaft by hand to clean the pump cavity and drain the residual oil. Repeat the cleaning agent several times. 3. The quality of vacuum pump oils of different brands and varieties is different. If they are mixed, the quality of the oil may change. Therefore, different types of vacuum pump oils cannot be mixed. 4. When used in solvents, water vapor and corrosive gases, check after use. When the oil is emulsified or diluted to affect the sealing performance of the vacuum pump, the oil should be changed.
