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Aquarium submersible pump noise is caused by what causes?
Fish lovers want their beloved fish to have a quiet, clean aquarium environment, but the impact of external aquarium equipment, it will inevitably have some noise. The most common is the sound of the work of the aquarium pump, people feel more irritable to hear more, let alone the fish? Why do some fish submersible pump noise so much? Here's a brief introduction to the origin of noise under the pump. Pump noise is nothing more than the following three aspects caused by: A: motor current sound loud, it sounds buzzing. Professional point is that high-frequency current caused core shock. PS: This pump uses energy-saving induction motor, the rotor part of the high-strength ceramic shaft and zinc coil composition, both to improve the corrosion resistance of the rotor light seawater and avoid the machine when the electromagnetic oscillation current sound (simply put is The rotor is not a magnet, the rotor does not need to synchronize with the current frequency when the induction motor is working, so there is no possibility of resonance). B: The friction between the shaft and the pump body. Generally flat work when the rotor of the pump by the magnetic support, the bottom of the pump to withstand the axis of the rotor to prevent the reaction due to water flow back, it is inevitable axis and the pump friction, the shaft finished grinding the rotor is useless, and general About a year. PS: This section pumps the rotor impeller rear anti-thrust balance board increased, this partition not only to prevent small sand into the chamber, the pump underwater work on the rotor force is completely offset, the rotor and complete pump separation, therefore No contact with friction noise. Special emphasis: This section of the asynchronous motor is equipped with anti-thrust balance board, the motor is not running in the water, the rotor will not be balanced, is absolutely noisy and will damage the shaft for a long time, the test machine please put flat or vertical water. C: Friction sound of runner and runner. As long as this is still a turbine centrifugal pump, the theory is no way to avoid it. PS: But the runner design arc, and surface finish will directly affect the size of the friction sound. Not much to say here to see if you are interested in the fish apart to see how smooth the wheel. These three factors are the root causes of the pump noise, a small noise, or silent water pump will be the best choice.