The WN type mud pump can achieve various pump performance adjustments by changing the impeller speed or the diameter of the mud pump impeller to change the pump head at the same flow rate in advance. Good wear resistance and long service life of overcurrent components. In the overcurrent components of the WN mud pump, the impeller, sheath, and front and rear guard plates (wear-resistant lining plates) are made of wear-resistant alloy cast iron with a hardness of not less than 58HRC, which not only has strong impact resistance but also high abrasion resistance; The A31 material successfully developed by the company has a hardness of up to 70HRC. In the product design process, full consideration is given to the matching of the service life between components, and the replacement cycle of wear-resistant parts is basically the same, reducing maintenance and replacement costs. The hydraulic loss is small, the efficiency is high, and the power consumption is low. Due to the hydraulic model used, the efficiency level of the mud pump is high. The efficiency level of WN type mud pumps is on average 2-3 percentage points higher than that of imported mud pumps. In this way, lower fuel consumption can be achieved with the same output. The shaft seal is reliable and leak free. The 200WN-500WN dredging pump shaft adopts mechanical seal, packing seal or mechanical seal. The shaft seal of the 600WN-1000WN dredging pump adopts a spiral sleeve L-shaped rubber sealing device, which consists of 3 L-shaped sealing rings and 1 shaft sleeve with special threads. The electric turning mechanism saves time and effort. The 700WN-1000WN dredging pump can be equipped with an electric turning mechanism, which can drive the pump shaft to achieve forward and reverse rotation. When disassembling and assembling the impeller, it not only saves time but also reduces the workload of the operator. Performance parameter table of WN (Q) series dredging pumps (for preliminary selection only) Yuzhou Longde Pump Co., Ltd. is a pump product manufacturing company that integrates design, casting, precision machining, and scientific research.