The QJB type submersible mixer is one of the key equipment in the water treatment process, capable of achieving uniform and flowing process requirements for both solid-liquid two-phase flow and solid-liquid-gas three-phase flow during the biochemical process. It consists of a submersible motor, impeller, and installation system. The submersible mixer features a direct-drive structure. Compared to traditional high-power motors that use a reducer to reduce speed, it offers advantages such as compact structure, low energy consumption, and ease of maintenance. The impeller is precision cast or stamp-formed, featuring high precision, strong thrust, and a streamlined, aesthetically pleasing design. This series is suitable for locations requiring solid-liquid mixing and blending. The structural diagram is as follows.