Based on a single-stage centrifugal pump, this pump utilizes the principle of series pumping to maintain constant flow while achieving increased head. After the slurry passes through the first impeller, it immediately enters a second impeller for additional pressurization, resulting in a high head. Additionally, the radial feed design ensures that the pressure in the sealing chamber is equivalent to the impeller inlet pressure, maintaining relatively low pressure and enabling leak-free operation of the pump.