Plug flow direction adjusting device of submersible mixer

The utility model relates to the technical field of sewage treatment equipment, and aims to solve the problems that microorganisms do not circularly flow in a biochemical reaction tank and the contact residence time and the mixing effect of the microorganisms and sewage are reduced because the conventional submersible stirrer adopts a fixed guide rail and the plug flow direction of the submersible stirrer cannot be adjusted. The plug flow direction adjusting device comprises a steering fixing block connected to one side of a guide rail coupling base, the steering fixing block is rotationally connected with a submersible mixer coupling connecting block, and the submersible mixer coupling connecting block can horizontally rotate and can be locked on the steering fixing block. The submersible mixer coupling connection block is used for being connected with a submersible mixer; the plug flow direction adjusting device of the submersible mixer is simple in structure and easy to operate, under the condition that pr