Submersible mixer directly driven by motor

The utility model provides a motor direct drive type submersible mixer which comprises a drive motor and a motor outer shell, and the motor outer shell comprises a front end cover and a rear end cover which are arranged in a matched mode. A rotating shaft is arranged in the motor shell, and two ends of the rotating shaft are sleeved with bearings and are respectively fixed on the front end cover and the rear end cover through bearing outer covers; the rotating shaft penetrates through the front bearing, extends towards the front end and is connected with the impeller seat, the rotating shaft is sleeved with a sealing support, and the sealing support is located outside the motor outer shell and fixedly connected to the front end of the motor outer shell; the outer mechanical seal is sleeved on the rotating shaft between the impeller seat and the sealing bracket; the inner mechanical seal is sleeved on the rotating shaft between the sealing bracket and the front end cover, the sealing bracket, the rotating shaf