Insertion type circulating fan

The invention provides an insertion type circulating fan. The insertion type circulating fan comprises a shell, a driving piece, a heat insulation wall, a rotating shaft, an impeller and a shaft seal assembly, wherein the driving piece is installed in the shell, the heat insulation wall is used for being installed on using equipment, a first end of the rotating shaft penetrates through the heat insulation wall and penetrates into the shell to be in transmission connection with the driving piece, the impeller is connected with a second end of the rotating shaft, and the shaft seal assembly is arranged on the rotating shaft in a sleeving mode and is used for sealing a gap between the rotating shaft and the shell. According to the insertion type circulating fan provided by the invention, by means of the arrangement of the heat insulation wall, high-temperature airflow on the using equipment is prevented from being transmitted to structural pieces of the circulating fan, the circulating fan is prevented from defo