Ritz series submersible pump is multi-stage vertical and horizontal dual-use centrifugal pump which is manufactured on the basis of the technology introduced from Ritz Company of West German and it is characterized by the advanced construction, the high-efficiency units, the excellent-quality materials, the vertical and horizontal dual-use, the long life, the reliable operation, the low noise and other advantages. The pumps are the upgrading products of the original QJ series products which implemented the standards of Ministry of Agriculture. The series of pump is mainly used for the permanent drainage of coal mines, the surface drainages and the high pressure jet grouting engineering and it is also applied to water elevating from the deep wells in the mining industry and the urban and rural areas. Series of Ritz multi-stage submersible pump are mainly composed of the motor and the pump, meeting the vertical and horizontal use. The diameter of the supporting motor shaft is thick and the shaft length is short. Its disturbance is sound.