Automatic protection device for movable submersible pump

The invention relates to the technical field of hydraulic engineering, and discloses a movable submersible pump automatic protection device which comprises a surge shaft and a submersible pump body, a diversion tunnel is arranged at the bottom of the surge shaft, a mounting plate is fixedly connected to the inner wall of one side of the surge shaft, a sliding groove is formed in one side of the mounting plate, and a movable seat is movably connected into the sliding groove; a floating ball liquid level switch is fixedly connected to one side of the moving seat, a threaded rod is movably connected to the interior of the mounting plate, and the threaded rod is in threaded connection with the moving seat. The submersible pump body can be automatically started and stopped through matched use of the submersible pump body and the floating ball liquid level switch, the using effect of the device is improved, the upper limit and the lower limit of the water level in the surge shaft can be adjusted through matched use