The sump pump type SP is a vertical, centrifugal slurry pump. The pump casing，impeller and wear plate are made of wear-resistant material. The sump pump has a simple construction and can be installed easily. The pump casing is fixed on the frame with bolts and the bearing body is installed on the top end of the frame. The double rows taper roller bearings near sump and the single row cylindrical roller bearings near drive end may bear the max. axial load of the pump. The base plate or frame of motor is installed on the bearing body. They may be directly driven or by Vee-belt. The belt pulley may be easily replaced for adjusting the pump speed to meet the duty variation or performance variation after the pump has being worn. There are split mounting plates on the frame. The mounting plates may be easily mounted on the steel frame base or concrete base. It has the advantages of easy installation and convenient operation. Pump can be immersed in the slurry sump for work. The inlet of pump is equipped with lower strainer so as to prevent the large particles from entering the pump.
The construction of the type SPR pump is as same as type SP pump perfectly，but for type SPR pump the outside of parts immersed in the slurry is lined with corrosive-resistant rubber. These parts with rubber liners are pump casing，impeller and wear plates. The connecting bolts immersed in the liquid are all lined with rubber protecting bush. The driving end of type SPR pump is as same as type SP pump.