Why Is A Submersible Pump Equipped With A Flow Protection Cover

Feb 19, 2025

Usually, when the diameter of the well is too large, the liquid flowing through the surface of the motor cannot reach the flow rate specified by the motor; On the contrary, if there is water in the well, the electric motor cannot be cooled; The water pump is installed in a water tank or open water area. What is the purpose of installing a diversion protective cover for a submersible pump?

What happens to a pump without a guide cover? If the motor cannot dissipate heat during operation, more heat will accumulate and the motor is easily damaged, greatly reducing its service life.

Someone may ask, aren't most electric motors of submersible pumps water lubricated? Why do we need to add a diffuser to dissipate heat? The submersible pump motor is indeed water lubricated, which means that the motor chamber is filled with water. It can be lubricated with water, but the motor has good sealing performance. When the electric motor is running, it also generates high temperatures and the heat cannot be dissipated.

Some people also ask if it is possible to bury the bottom of a submersible pump with a range hood when it is filled with water? In fact, the understanding here is incorrect because the filter under the range hood is only used for water intake, not for suction. However, many customers unknowingly regard submersible pumps with diversion covers as submersible pumps with suction covers. Submersible pumps with suction ports should also be completely submerged in water during use to prevent motor and pump head burnout due to external water shortage.