What are the reasons for the vibration of the water pump? Let’s follow the editor of UTB water pump for a simple understanding!
1. Motor
Motor structural parts are loose, bearing positioning equipment is loose, iron core silicon steel sheet is too loose, and the bearing stiffness decreases due to wear, which may cause oscillation. Mass deviation, uneven rotor mass distribution caused by rotor tortuosity or mass distribution problems, constitutes an excessive amount of static and dynamic balance. Motor stator windings, due to the operational quality problems of the equipment process, constitute an unbalanced resistance between the phase windings, which results in uneven magnetic fields and unbalanced electromagnetic forces. This electromagnetic force becomes an exciting force and causes oscillations.
2. Foundation and pump support
The touch fixation form used between the drive equipment frame and the foundation is not good, and the foundation and the motor system have poor ability to absorb, transmit, and isolate oscillations, which causes the oscillation of the foundation and the motor to be overrun. The foundation of the water pump is loose, perhaps the water pump unit forms an elastic foundation during the equipment process, or perhaps because the stiffness of the foundation formed by the oil-soaked water bubble is weakened, the water pump will have another critical speed with a phase difference of 1800 from the oscillation, which will increase the oscillation frequency of the water pump. If the frequency is close to or equal to the frequency of an external element, the amplitude of the pump will increase. In addition, the looseness of the foundation bolts will reduce the restraint stiffness and increase the vibration of the motor.

3. Coupling
The circumferential distance between the coupling bolts of the coupling is poor, and the symmetry is damaged; the extended section of the coupling is misaligned, and the misalignment force will occur; the conicity of the coupling is out of tolerance; the static or dynamic balance of the coupling is not good ; The cooperation between the elastic pin and the coupling is too tight, which makes the elastic pin lose its elastic adjustment function. The coupling can not be well aligned; the cooperation gap between the coupling and the shaft is too large; the mechanical wear of the coupling rubber ring As a result, the cooperating function of the coupling apron is reduced; the quality of the transmission bolts used on the coupling is different from each other. These reasons all constitute oscillations.
The above is the introduction of the editor of UTB water pump: about the causes of the vibration of the water pump.