vacuum pump parts common failure

vacuum pump parts:

1. Oil mist filter (alias: oil mist separator, exhaust filter, exhaust filter element)

Under the action of driving force, the filter paper and cotton in the oil-gas mixture on one side pass through the vacuum pump oil mist separator. The oil is intercepted to separate the gas from the vacuum oil. The filtered vacuum pump oil is recycled along with the oil return pipe, and the discharg ed gas is oil-free, which achieves the effect of pollution-free and clean.

2. Air filter (alias: air filter element)

The gap of vacuum pump sliding is very small, and the external medium contains particles and dirt, which will destroy the sliding surface, attach or block the sliding surface of the pump, resulting in the pump can not work normally. In order to prevent foreign objects from being sucked into the pump, it is necessary to use a filter to stop it from entering the pump. In case of air impurities not filtered out, into the pump, may lead to pipe blockage, lubricating oil mixing, so the choice of air filter, it is necessary to choose the principle of genuine. ? later maintenance and repair: the air filter of the vacuum pump should be cleaned regularly to prevent the impurities staying in the filter from being sucked into the pump and causing the pump stuck.

3. Oil filter (alias: oil tank)

Oil tank is also known as oil filter. Vacuum pump oil filter is an oil filtering device equipped by many imported vacuum pump brands. It is installed on the oil return pipeline of the pump. Its main purpose is to capture pollutants that occur or invade the system in the oil return tank. Therefore, it is also an important filtering device to control the pollution concentration of the system.

Common failure of vacuum pump accessories:

1. Wear and tear

Wear is a common failure mode of vacuum pump accessories. One is the friction and wear of contact surface between parts under lubrication condition, which often occurs in gears, cylinder block, blade, rotor sliding bearing and rolling bearing. This kind of wear is slow, and the wear failure is mainly related to lubrication and sealing conditions. The other is the wear caused by friction between parts or materials on the surface of parts under the condition of no lubrication, which is especially prominent in vacuum pump. Such as coupling, rotary vane vacuum pump pulley, screw vacuum pump twin-screw and so on. This kind of wear rate is much faster than the former, which is mainly related to the properties of metal materials and materials. For oil vacuum pump, the wear in lubrication is particularly prominent, mostly due to the deterioration of vacuum pump oil and foreign impurities leading to poor lubrication.

2. Fatigue fracture

Fatigue is a failure mechanism, and crack is a failure mode. They often end up breaking parts. This kind of fatigue fracture failure process generally exists in the gear teeth under alternating load. It is commonly used in connecting bolts, anchor bolts, springs and other parts, and also in important parts such as gear drive shaft. There are many factors involved in fatigue fracture. It is necessary to analyze the failure parts, find out the causes and take countermeasures.

3. Deformation

Deformation is also a common failure mode of vacuum pump parts. Due to the high-speed operation of the pump will produce a certain high temperature. Such as shell, plate, etc. are often in the state of heating, most likely to occur. The gradual plastic deformation can not restore the original geometric size and shape of the parts, which will cause equipment failure in serious cases. Such as seal ring, oil seal, etc.

4. Corrosion

Corrosion is another failure mode of vacuum pump parts. It is commonly used in vacuum pumps operating in PCB and chemical industry.

The above accessories are vulnerable consumables, such as the above situation need to be replaced. When the vacuum pump fails, we should check and deal with it. After confirming that it is the failure of its accessories, we should make corresponding solutions to the above problems. In order to prolong the service life of the equipment, it is necessary to maintain it regularly to reduce the frequency of its failure.

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