Pumps pumps for the vertical single stage gentrifugalism platoon, in import and export core in identical level line, import and export flange same, therefore installs disassembles extremely conveniently, the area is small, may equally install like the valve in pipeline any position. Pumps with the electrical machinery straight association coaxial, is the integration of machinery product, the structure compact, the performance is stable. Uses the big flow channel anti- to stop up the water power part design, greatly enhances the contamination the traffic capacity, can effectively through pump the caliber 5 time of textile fibers matter and the diameter for pumps the caliber approximately 50% solid particle. Designs reasonably, the necessary electrical machinery reasonable, efficiency high, the energy conservation effect is remarkable. The weapon seal uses the flinty wear-resisting tungsten carbide, has durably, is wear-resisting and so on the characteristic, may cause to pump above the safe continuous running for 8,000 hours. Water power performance advanced, entire machine efficiency high, the revolution noise is low. Adds on the safety mask in the electrical machinery wind leaf end, entire machine may set to outside works, does not need the engine room, may save the massive capital construction expense. Lifts in the scope in the use to use, guaranteed the electrical machinery does not have the overload.