WQ series submersible centrifugal pump is a new generation of pump products developed on the basis of introducing foreign advanced technology and combining with the use characteristics of domestic pumps. It is commonly used in mines, hotels, municipal engineering, construction sites, farmland, municipal and other industries to deal with sewage and dirt with particles, clear water and corrosive media. Moreover, the product adopts the design of special large channel, which greatly improves the drainage capacity, so that it can pass the solid particles whose diameter is about 50% of the pump caliber.