Volute pump

The utility model relates to the technical field of centrifugal pumps, and provides a volute pump which comprises a shell, an impeller rotationally arranged in the shell and a driving piece arranged on the shell and used for driving the impeller to rotate, and is characterized in that the shell comprises a volute part, the volute part is provided with an arc-shaped part, and the arc-shaped part is located between the impeller and the volute part. One end of the arc-shaped part extends to an outlet of the liquid thrown out by the wheel, and the other end of the arc-shaped part is in smooth transition with the volute part. By means of the technical scheme, the problems that in the prior art, due to high-strength vortexes, the pump shell is seriously abraded, and the service life of the volute pump is shortened are solved. 本实用新型涉及离心泵技术领域，提出了一种蜗壳泵，包括壳体，叶轮，转动设置在壳体内，驱动件，设置在所述壳体上，驱动所述叶轮转动，其特征在于：所述壳体包括蜗壳部，所述蜗壳部上具有弧形部，所述弧形部位于所述叶轮和所述蜗壳部之间。所述弧形部一端延伸至所述也轮甩出液体的出口处，另一端与蜗壳部平缓过渡。通过上述技术方案，解决了现有技术中的由于高强度漩涡，对泵壳造成严重磨损，降低了蜗壳泵的使用寿