Novel centrifugal pump volute

The utility model provides a novel centrifugal pump volute. In an existing volute structure, the flowing situation of fluid near a volute tongue is poorer, flow lines of an outlet section of a volute are not uniformly distributed, and certain influence on the integrated performance of a centrifugal pump is generated along with the occurrence of vortex. The novel centrifugal pump volute comprises an inner cavity, an outlet pipeline and a rounded volute tongue structure, wherein the rounded volute tongue structure is arranged between a low pressure area and a high pressure area of the inner cavity, and a molded line of the inner cavity adopts a log spiral line; the novel centrifugal pump volute is mainly characterized in that parameters of the molded line are determined by designing the volute tongue structure at a connected position of the inner cavity and the outlet pipeline; a rounded volute tongue is arranged at the connected position of the inner cavity and the outlet pipeline of the novel centrifugal pump volute; the rounded volute tongue is formed by combining two sections of arcs, parameters of the arcs are optimized and determined through a numerical computation method, and curves are in smooth connection. According to the novel centrifugal pump volute provided by the utility model, the flowing situation of fluid of the volute tongue part can be improved, the flowing of the outlet section of the volute is more uniformly distributed, and thus the performance of a centrifugal pump is improved.