Automatic blast gate structure

The utility model provides an automatic blast gate structure, the base one side in power cabin is equipped with the grid air intake, is equipped with cooling fan on the hole of airing exhaust in power cabin, and cooling fan passes through return air inlet and power cabin intercommunication on the butt joint wind channel, and intercommunication department is equipped with the return air valve of opening and close the return air inlet near the grid air intake in the butt joint wind channel, still be equipped with the air exit that communicates with outside environmental facies on the butt joint wind channel between return air valve and cooling fan, be equipped with the exhaust valve of opening and close the air exit on the air exit, the air inlet temperature sensor and the difference of the under -deck temperature sensor in the power cabin signal connection the control unit of grid air intake department, the control unit signal connection return air valve and exhaust valve. The fine solution of this device the