Execution standard: JB/T10601-2006ZW self-priming non clogging sewage pump, a new type of pump that integrates self-priming and sewage discharge. The hydraulic design of this series of pumps is unique. The impeller is enclosed in a separate impeller chamber, which is connected to a pressurized water chamber. When the impeller rotates, the liquid inside the pump generates a strong axial vortex, creating a vacuum at the inlet and a head at the outlet. Therefore, impurities can be discharged from the pressure chamber, so its flow channel is completely unobstructed, and its sewage discharge effect is unparalleled by other self-priming sewage pumps. The sewage pump produced by our unit does not require the installation of a bottom valve like a general self-priming water pump, and can also suck and discharge sewage containing large solid particles, long fibers, sediments, waste impurities, and all engineering wastewater