The noise of the rotor pump is one of the characteristics that reflect the working condition of the pump.
Noise is generated by the sound source, the pump noise, is generated by the pump parts of the machine or the pump flow of the media. To reduce the noise, we must carefully analyze the sound source of the noise, improve the structure of the sound source or the movement of the media.https://youtu.be/8PhxK_EA6b8?si=rZgIH3z8_hlHm1dm
The causes of noise are mainly in the following areas.
1. Mechanical noise
Mechanical noise has more reasons. It is often accompanied by pump vibration and the same time. The intrinsic cause of the pump itself is mainly the pump body rigidity is not good, when accompanied by pump cavitation occurs, it constitutes a sound source; impeller design rigidity is not good can also lead to the above results. Cam rotor pump rotor parts and not rotating between the pump body, due to contact friction, will also produce higher frequency noise.
Another reason for mechanical noise is due to the external structure of the pump and installation problems. For example, the pump base design is unreasonable, rigidity is small, the base below the filling of concrete defects, the formation of “hollow drum phenomenon”. Then there is the pump and motor is not centered, causing rotor vibration and noise. www.defenderpump.com
2.Aerodynamic noise
Aerodynamic noise, mainly due to the motor fan and rotor rotation in the air and produce, it is mainly with the number of fan blades and the relative speed of air flow.
3.Electromagnetic noise
Electromagnetic noise is generated by the motor. Voltage instability causes electromagnetic vibration; rotor eccentric air gap is not uniform, so that the electromagnetic noise increases; motor windings have faults, resulting in magnetic field imbalance, so that the motor produces a low roar.
4.Hydraulic noise
The hydraulic noise of the machine pump is caused by hydraulic vibration.
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