What should I do if the explosion-proof submersible sewage pump damages the motor when idling?
In the field of mines and coal mines, the application of explosion-proof submersible sewage pumps can be said to be more and more standardized. However, in actual use, it was found that due to the lack of relevant knowledge and skills of some users and the blind operation behaviors, the explosion-proof submersible sewage pump could not be fully utilized, which affected the improvement of the working efficiency of the explosion-proof submersible sewage pump. One of the most common wrong behavior habits is to use the explosion-proof submersible sewage pump idling. What are the consequences if idling? What should I do if the explosion-proof submersible sewage pump is idling and the motor is damaged?
What should I do if the explosion-proof submersible sewage pump damages the motor when idling?
The general explosion-proof submersible sewage pump cooling method is water-cooled. Regardless of whether it is internal water cooling or external water cooling, or the dual-water cooling method, water is required as the medium to complete the cooling and heat dissipation of the explosion-proof submersible pump. When the explosion-proof submersible sewage pump is idling, there is no water to cool the heating parts such as the windings and bearings of the submersible sewage pump. Therefore, the idling of the submersible sewage pump is not allowed.
The internal and external double water cooling of the explosion-proof submersible sewage pump has a better cooling effect. The internal cavity of the submersible sewage pump is filled with water, and the stator core, stator winding, rotor core and rotor winding (rotor guide bar and rotor end ring) are all immersed in water , It is directly cooled by the water in the machine. The heat generated by the motor stator iron loss, the resistance loss of the stator slot winding and the partial resistance loss of the end winding directly passes through the stator core, and is carried away by the cooling water flowing through the casing through the casing. Part of the heat generated by the resistance loss of the rotor winding and the loss of the rotor iron is directly transferred to the stator through the air gap, and is carried away by the cooling water outside the motor through the stator; the other part is transferred to the water in the rotor cavity. The other part of the resistance loss heat transferred to the inner cavity filled with water and the heat generated by the mechanical loss together with the heat generated by the mechanical loss through the inner cavity are transferred to the stator core, casing and bearing seat, and finally through the motor casing and bearing seat. The appearance of the parts is passed to the cooling water to take away.
The reason why the explosion-proof submersible sewage pump can’t idling is also the pump head part of the submersible motor. Many bearings are smooth. If there is no water, dry grinding occurs between the pump shaft and the bearing, and the motor is simply overloaded. It generates heat and burns the motor.
Looking at the application status of explosion-proof submersible sewage pumps in recent years, there are not a few cases of submersible sewage pumps malfunctioning, damaged or prematurely scrapped due to idling use. It can be seen that the development of good usage habits is of great significance for maintaining the good technical status of the explosion-proof submersible sewage pump, improving the use efficiency of the submersible sewage pump, and extending the service life of the submersible sewage pump.
The above is the analysis of the explosion-proof submersible sewage pump by Zoomlion Pumps. For a small number of customers who use improperly, they should understand the importance. After all, the cost of damaging some parts is also quite high. Sometimes the replacement of key parts is not as good as purchasing a new pump. , You can contact the official website hotline if you have any questions or suggestions.
