No matter what kind of water pump it is, it will make a sound as long as it is started. The sound of the normal operation of the water pump is consistent and has a certain thickness, and you can feel the surge of water. Abnormal sounds are all kinds of strange, including jamming, metal friction, vibration, air idling, etc. Different problems in the water pump will make different sounds. Let’s learn about the reasons for the abnormal noise of the water pump.
Idling Noise
The idling of the water pump is a continuous, dull sound, and a slight vibration can be felt close to the pump body. The long-term idling of the water pump will cause serious damage to the motor and pump body. Here are some reasons and solutions for idling. :
The water inlet is clogged: If there are fabrics, plastic bags and other debris in the water or pipes, the water outlet has a high probability of being clogged. After blockage, the machine needs to be shut down immediately. Remove the connection of the water inlet and remove the foreign matter before restarting. start up.
The pump body is leaking or the seal is leaking: the noise in these two cases will be accompanied by a “buzzing, buzzing” bubble sound. The pump body contains a certain amount of water, but air leakage and water leakage occur due to loose sealing, thus Produces a “gurgling” sound. For this kind of problem, only replacing the pump body and seal can solve it from the root.
Figure | Water pump inlet
Friction noise
The noise caused by friction mainly comes from rotating parts such as impellers and blades. The noise caused by friction is accompanied by the sharp sound of metal or the sound of “clatter”. This type of noise can basically be judged by listening to the sound. Fan blade collision: The outside of the water pump fan blades is protected by a wind shield. When the fan shield is hit and deformed during transportation or production, the rotation of the fan blades will touch the fan shield and make an abnormal sound. At this time, stop the machine immediately, remove the wind cover and smooth out the dent.
Figure | Position of fan blades
2. Friction between the impeller and the pump body: If the gap between the impeller and the pump body is too large or too small, it may cause friction between them and cause abnormal noise.
Excessive gap: During the use of the water pump, friction will occur between the impeller and the pump body. Over time, the gap between the impeller and the pump body may be too large, resulting in abnormal noise.
The gap is too small: During the installation process of the water pump or during the original design, the position of the impeller is not adjusted reasonably, which will cause the gap to be too small and make a sharp abnormal sound.
In addition to the above-mentioned friction and abnormal noise, the wear of the water pump shaft and the wear of the bearings will also cause the water pump to make abnormal noise.
Wear and vibration
The main parts that cause the water pump to vibrate and make abnormal noise due to wear are: bearings, skeleton oil seals, rotors, etc.For example, bearings and skeleton oil seals are installed at the upper and lower ends of the water pump. After wear and tear, they will make a sharp “hissing, hissing” sound. Determine the upper and lower positions of the abnormal sound and replace the parts.
Figure | Skeleton oil seal
The above are the reasons and solutions for abnormal noises from water pumps. Follow Purity Pump Industry to learn more about water pumps.
Post time: Nov-22-2023