The silent oil-free vacuum pump manufacturer will let you know that if the oil-free screw vacuum pump has gas turbidity, there will be noise and vibration problems, affecting normal use. So what are the specific reasons why oil-free screw vacuum pump needs to prevent cavitation?
At a certain temperature, when the liquid depressurizes to the vaporization pressure at that temperature, the liquid will produce bubbles, which is called gas turbidity. The specific reasons why oil-free screw vacuum pump needs anti cavitation are as follows:
1. Cavitation will pose a great threat to the impeller and disk of oil-free screw vacuum pump. The main reason is that the impeller caused point damage and began to damage the protective layer on the metal surface. With the increase of cavitation time, honeycomb pits will be formed on the impeller surface, and the depth of the pits will slowly increase until the impeller breaks due to cavitation and liquid resistance.
2. Repeated generation and rupture of bubbles will damage the surface of parts in this area. In addition, the chemical and electrochemical corrosion of liquid and part materials will cause cavitation damage with sponge or honeycomb characteristics to the oil-free screw vacuum pump.
3. Cavitation is a great threat to oil-free screw vacuum pump. In practical applications, the performance degradation and even damage of many vacuum pumps are caused by cavitation.
4. Due to the increase of pressure, bubbles will burst rapidly at the exhaust end. At this time, the water around the bubble will quickly fill the space of the bubble, causing a great impact on the impeller and disc of the vacuum pump, accompanied by a harsh sound.
If the oil-free screw vacuum pump has no anti cavitation protection measures, it is easy to be corroded in a short time, which seriously affects the normal use effect and service life of the vacuum pump. Therefore, the oil-free screw vacuum pump must pay attention to its anti cavitation protection measures. The above is the reason why the oil-free screw vacuum pump needs anti cavitation. I hope it can help you.