Air cooler for deep hypothermia warehouse

The air cooler comprises an air cooler body and a filter screen plate, the filter screen plate is detachably connected to the front portion of the air cooler body, a side seat is fixed to the right end of the air cooler body, and two side strips are symmetrically fixed to the front end of the air cooler body and located on the upper side and the lower side of the filter screen plate. A synchronous wheel and synchronous belt assembly is installed between the middle of the outer end of the side strip and one end of the side base. By rotating one knob, the knob drives the first synchronizing wheels to rotate, the two first synchronizing wheels can synchronously rotate through the rotating shaft, the first synchronizing wheels and the second synchronizing wheels synchronously rotate through the synchronous belt, so that the second synchronizing wheels can drive the shaft rod to rotate, the shaft rod can drive the gear to rotate, and the gear is meshed with the rack to rotate. The rack drives the penetrating rod t