Elastic leveling device capable of automatically adjusting wind speed

An elastic automatic wind speed adjusting and leveling device comprises a metal expansion buffer cavity, elastic membrane flaps and air pipes, the periphery of a hearth is connected with the air pipes, the metal expansion buffer cavity is connected to the sides, close to the hearth, of the air pipes through flanges, a plastic lining is installed in the metal expansion buffer cavity, and multiple layers of fixing rings are arranged on the inner wall of the plastic lining in the length direction. A plurality of fixing ring grooves are formed in the inner wall of each layer of fixing ring in the circumferential direction, and an elastic flap is riveted to each fixing ring groove. The air speed and the air pressure are automatically adjusted based on the buffering effect of the elastic membrane flaps on the fluid pressure intensity, the deviation of the flow speed of outlets of air pipes with different lengths can be within 2%, and therefore automatic air speed leveling in the true sense is achieved; and the elas