1.Working Principle 

Vacuum pump generates vacuum by mechanical movement and draws gas into the pump. In this process, it will be accompanied by the generation of oil mist. The oil mist filter uses filter paper, cotton and other filtering materials to intercept the oil droplets in the oil-gas mixture under the driving force of gas flow, so that the gas can pass through, thus realizing the separation of oil mist and gas. The filtered vacuum pump oil will be recycled back to the pump through the oil return pipe, and the final discharge is a cleaner gas.

2. Product Features 

• High-efficiency filtration: It can effectively filter oil mist, and the filtration efficiency usually reaches more than 99%, which can reduce the oil mist content in the exhaust to a very low level, reduce the pollution to the environment, and at the same time, help to protect the peripheral equipments from the erosion of oil mist.

• Oil mist recycling: the filtered vacuum pump oil can be recycled and reused, which not only saves the cost of pump oil, but also reduces the amount of waste oil to be disposed of, in line with the requirements of environmental protection and energy saving.

• Stable performance: adopting high-quality filter material and reasonable structural design, it has good pressure resistance and corrosion resistance, and can maintain stable filtration performance for a long time, is not easy to be blocked, and has a long service life.

• Strong adaptability: it can be adapted to many types of vacuum pumps, such as rotary vane vacuum pumps, slide valve vacuum pumps, etc., and can adapt to different working environments and conditions, and some of the products also have a certain degree of resistance to high temperature and humidity.

3.Main Materials 

The shell is usually made of carbon steel or stainless steel, and the surface is treated with electrostatic spraying or other anti-rust treatment, which has strong anti-rust corrosion ability. The core filter material is mostly imported glass fiber fabric, which has the advantages of high filtration efficiency, low pressure drop, and good corrosion resistance, etc. It will also be used with PET material around it, which has the advantages of oleophobic, flame retardant and corrosion resistance.

4.Application Scene 

is widely used in industrial production of vacuum coating, vacuum freeze drying, vacuum heat treatment and other processes, as well as electronic manufacturing, chemical, pharmaceutical, food packaging and other industries. At the same time, it is also used in laboratory vacuum experimental equipment, negative pressure system in hospitals, etc. It can meet the requirements of vacuum degree in these scenes and ensure that the oil mist emission meets the environmental protection standards.

5.Maintenance Points 

In order to ensure its normal operation and filtration effect, it is necessary to check the pressure drop of the filter regularly, and the filter element should be replaced in time when the pressure drop exceeds a certain value (e.g., 40kPa) or the use time reaches a specified length (e.g., 2000 hours). When replacing the filter element, it is recommended to check the condition of the vacuum pump oil at the same time. If the oil has been contaminated, it is necessary to clean the vacuum pump and replace the oil with new one in order to prolong the service life of the vacuum pump and filter.