First, the basic principle of submersible sewage pump Submersible sewage pump is a type of pump used in the environmental protection industry to transport solid and liquid mixed liquids such as domestic sewage, industrial wastewater and mud containing solid particles and fibers. WQ type submersible sewage pump consists of sewage pump, sealing system, submersible motor, control and protection system, automatic installation system and other parts. The difference with the general sewage pump is: WQ submersible sewage pump coaxial pump and motor rotation, and at the same time dive into the liquid work. Pump sealing system can effectively prevent the liquid into the motor chamber to protect the safe operation of the motor. Control and protection system to the pump in the event of water leakage, oil spill, overload, overheating, lack of equal failure, timely alarm and shutdown for repair. Second, the technical key automatic installation system Through the coupling device, so that the pump automatically install and remove the pipe system connection or disconnection. WQ submersible sewage pump is an indispensable water treatment equipment. Its safe operation directly affects the safe operation of the entire water treatment system. Therefore, the most important issue in the WQ submersible sewage pump is to ensure the reliability of the pump. The key problem that affects the reliability of the sewage pump is the pump Sealing performance and no overload performance and service life of important components, the pump seal, we used a combination of impeller hydrodynamic seal and mechanical seal of the new sealing technology, the seal reliability has been greatly improved. And in the absence of overload performance, we use full-field-based theory for the pump hydraulic design, with dual-channel impeller, the pump not only has a larger capacity and more importantly, the pump in the entire lift range will not exceed the power The motor is rated for motor overload
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