Efficient gas supply device of steelmaking converter

The efficient air supply device comprises a box body, an air inlet pipe is fixedly connected to the bottom of one side of the box body, a filter screen is fixedly connected to the inner wall of the box body, two first sliding grooves are formed in the middle of the inner wall of the box body, two first sliding blocks are slidably connected into the two first sliding grooves, and the sides, close to each other, of the two first sliding blocks are fixedly connected with a movable frame. A first inserting hole is formed in the top of one side of the box body, a material receiving box is inserted into the first inserting hole, a second inserting hole is formed in the bottom of one side of the box body, a dust accumulation box is inserted into the second inserting hole, and four clamping device assemblies are arranged at the top and the bottom of one side of the box body; a plurality of air outlets penetrate through the top surface of the box body. Through the cooperation of all the components, the cleaning block