Product features: LXL type two phase flow according to pump solid-liquid two-phase fluid in the pump move within the velocity field and pressure field change, deformity of the rule of the pump water flow design, to comply with the solid-liquid two-phase flow within the pump movement rules, and get the best energy conversion, greatly improve the efficiency of water pump cavitation performance of the pump gas and service life 1, the structure is reasonable, maintenance without disassembly pipeline 2, the dynamic seal design impeller