Sewage pump used in the most common is the case of the water pump, including the installation of a submersible pump in the selection of the diameter of the guide vane or runner. A spiral, spiral ring and intermediate type three. The spiral case is not in the sewage pump. Ring shaped pressure water chamber because of the construction of simple production to facilitate the use of small Shanxi sewage pump more. But because of the medium type (semi spiral), the use of the annular pressure chamber is gradually becoming smaller and smaller. Sewage pump for intermediary type pressurized water chamber with high efficiency and a circular spiral pressurized water chamber of high permeability. More and more attention has been paid to the manufacturer.

Sewage pump is attributed to a kind of centrifugal impurity and has a variety of forms: such as diving and dry two kinds, the most common submersible for submersible sewage pump WQ type, the most common dry sewage pump, such as W type horizontal sewage pumps and WL type vertical sewage pump two. Mainly used to transport urban sewage, manure or liquid containing fiber. Paper and other solid particles of the medium, usually transported medium temperature of not more than 80 DEG C. Because of the material being transported in a medium containing a filament wound or a bundle of fibers. Therefore, the pump flow easy to jam, once the pump is blocked the pump can not work normally, and even burned the motor, and then the formation of poor sewage. To urban life and environmental protection has a severe impact. Therefore, the anti blocking and the reliability of the sewage pump is an important factor.