This pump is a single-stage single-suction vertical centrifugal pump. Its main components include volute, impeller, pump seat, pump casing, support cylinder, motor seat, motor, etc. The volute, pump seat, motor seat and impeller nut are cast iron, with good corrosion resistance and convenient processing technology. The impeller is a three-piece single-circular chordal curved blade, a semi-enclosed impeller is selected, and forgeable cast iron is used, so it has high strength and corrosion resistance; it is easy to process, has good passability and high efficiency. In order to reduce weight and reduce the amount of turning, the pump shaft is made of high-quality carbon steel cold-drawn round steel. Four skeleton oil seals and sleeves are installed in the pump seat to prevent shaft wear and extend the service life of the shaft. The NL series sewage slurry pump can be used vertically or tilted, with a small footprint. The volute needs to be buried in the working medium to work, is easy to start, does not require bow I water, and the rotation direction should be clockwise from the tail of the motor. The total length is available in various specifications so that the user unit can choose according to local conditions according to the purpose.