The quality of the submersible pump is judged by listening

Submersible pump can be judged by listening to the performance of good or bad it? This sounds unrealistic things in the now have professionals in the trial, by listening to determine the characteristics of the sound of submersible pumps, hot water submersible pumps can not speak? Here to explain to you:
Submersible pumps have a built-in small engine, although the appearance is small, the function is very complete, and like a hot water submersible pump so insulated high-power engine, pumping effect is very strong, we say is to listen to the sound from the engine inside Children to listen to, listen to the sound of the degree of thick and open degree. There are two basis:
1, the sound density, thick as well
In normal times everyone has heard such a voice, when the home of the submersible pump in the pumping time, the switch will be opened to hear a very thick buzzing sound, whether you are not professional submersible pump researchers, The sound of good or bad you can hear it, light and crisp sound, that the internal structure of the engine stability, and the use of various materials are real good material, because some of the material is through the false, the internal is hollow.
2, blunt purity is enough
Engine is definitely one of the places we must pay attention to select the submersible pump, an engine sound is pure, it means that the internal structure is stable, especially in the start time, some engines will be issued that Kaka sound, This shows that there are many problems within the engine, there may be in use in the future there will be many failures.