This product is efficient, energy-saving, has a long service life, is light in weight, has a reasonable structure, is reliable in operation, and is easy to maintain. It is suitable for industries such as electricity, metallurgy, coal, and building materials. The treatment medium is an abrasive or corrosive slurry containing solid particles. The solid-liquid mixed concentration of ash slurry is 45%, and the slurry is 60%. The mass temperature is ≤60°C. This type of pump can be used in multiple stages in series.