Roots vacuum pump is a vacuum pump without internal compression, mainly by the pump cavity of a pair of leaves rotor synchronous, counter-rotating push function to move gas to achieve extraction, high pumping speed, starting fast, small volume, convenient operation and maintenance, in the aerospace, electronics, chemical, pharmaceutical, light industry and so on vacuum pump is widely applied in various fields. It is widely used and is highly praised and loved by the market. However, after using it for a period of time, you will find that there is noise. What's going on here?

The noise of Roots pump is mainly caused by motor noise and roots pump noise. The specific analysis is as follows:

 

One, Motor noise

Motor noise to a great extent will mask the noise of roots pump. On the one hand, motor noise is caused by plastic fan deformation, which also causes fan noise. On the other hand, the use of poor quality bearings caused by bearing noise.

 

Second, roots pump noise

The noise source of Roots pump is mainly caused by rotor collision, gear and bearing noise.

1. Rotor impact noise

It includes the collision noise between rotor and rotor, rotor and pump body and rotor and side cover. The main reasons are as follows: insufficient stiffness of shaft, radial displacement of rotor and gear positioning on shaft, too large or too small gear clearance, too large axial clearance of bearing, etc.

2. Gear noise

Besides the machining accuracy of the gear itself, the parallelism and center distance of the two rotor shafts of the gear are also the factors affecting the noise of the gear.

3. Bearing noise

In addition to the precision of the bearing itself, insufficient design may also cause the increase of bearing noise, such as too much interference in the inner and outer rings of the bearing, insufficient shaft stiffness, insufficient supply of lubricating oil, and pollution by dust, water, corrosive gases and liquids.

 

Above is the root pump noise analysis, of course, this is for the ordinary Roots pump, the best solution is to buy a good performance, low noise roots pump, I hope this information will be helpful to you.