盘式烟道阀是目前我国中小型高炉广泛采用的热风炉烟道阀的主要形式,这种阀的主要缺点是阀盖在工作时严密性较差。由于烟道阀是在较高温度的条件下使用(一般在 500℃左右),阀盖及传动轴易产生变形,检修也较困难。 我厂现有2座82m~3的小型锰铁高炉,改进前均使用盘式烟道阀。针对上述问题, Disc flue valve is the main form of the stove flue valve widely used in the small and medium-sized blast furnace in our country. The main disadvantage of this valve is that the valve cover has poor tightness at work. As the flue valve is used under the conditions of higher temperature (usually around 500 ℃), the valve cover and the transmission shaft are easy to produce deformation and the maintenance is also more difficult. I plant the existing two 82m ~ 3 small ferromanganese blast furnace, the improvement before the use of disc flue valve. Regarding the issue above,