Plug-in type energy-saving fan convenient to disassemble and overhaul

The utility model relates to the technical field of fan maintenance, in particular to a plug-in type energy-saving fan convenient to disassemble and maintain. The fan comprises a shell and a protective side plate used for conducting safety protection on the fan, an air supply pipe is arranged on one side of the shell, a base is fixedly installed at the bottom of the shell, an inner cavity is formed in the shell, an air inlet communicated with the inner cavity is formed in the side wall of the protective side plate, an impeller is rotatably installed in the inner cavity, and a connecting wall used for installing the protective side plate is arranged on one side of the shell. A plug connector is rotatably mounted in the movable cavity and comprises a two-way cam, two plug-in rods are symmetrically arranged on the arc-shaped side walls of the upper end and the lower end of the two-way cam, limiting rings are mounted on the plug-in rods, springs are mounted on the outer walls of the plug-in rods in a nested mode,