It can be widely used in municipal sewage, industrial sewage, domestic sewage and other sewage treatment processes. The spiral centrifugal pump can transport the liquid with solid content up to 18%, and the sewage with sludge and fiber content up to 14%, truly realizing the characteristics of non clogging transmission.

In various sewage media, there are particles and long fibers, which are often blocked. One reason is that a lot of construction waste has not been cleaned up in time before the pump house is opened to water. Many loose small stones, small steel bars, etc. Another reason is that the sewage itself contains all kinds of garbage and sundries, especially fiber materials, which will still get bigger and bigger in the pump like snowballs until the impeller is blocked and the equipment stops running.

The advantage of the screw centrifugal pump is that the impeller has a twisted spiral blade, which extends axially from the suction inlet, and the radius of the blade gradually increases, forming a very open spiral flow channel. The shell is composed of suction port, lining and volute. The impeller at the suction port produces spiral propulsion, and the impeller at the volute produces centrifugal action. The acute angle at the blade inlet guides the debris to the shaft center attachment, and then uses the spiral action to propel it along the axis. After entering the impeller, solid particles enter the pump along the paraboloid formed by the rotation of the spiral blade under the balanced spiral force, However, the trajectory of particles passing through the spiral centrifugal pump is gradual, so the liquid flow passes through the pump in a smooth open channel under the condition of low stress and low mixed flow. And this unique design also allows liquid with large solid content to pass through without blocking.

For the very soft and easily entangled hair and other small fibers, the impeller inlet liner is designed with a unique protrusion, which can effectively leave these fibers, so that the impeller is located behind the protective ring. This not only prevents the impeller tip from snagging the fibers, but also prevents the damage to the impeller tip caused by the filament wound impeller, and solves the fiber blockage problem of the traditional non clogging pump.