The air door is mainly used to adjust the medium flow in the flue gas pipeline. At different positions within the range of 90 ° rotation of the blade, the pressure, temperature, quantity and other parameters of the medium in the control system are controlled by different medium flow.

The parameter of product：

Working temperature : ≤ 700 °C  Working medium : cold, hot air or flue gas, which can adapt to high wear conditions.  Stroke : 0 ~ 90 °  Total air leakage rate : ≤ 3 %  Drive mode : electric, manual, pneumatic  Specification : DN100-DN8000, can be customized as needed.

Range of application：

The flue gas pipeline of steel plant, the conveying system of hot air, fly ash and other powder dry materials of thermal power plant boiler.

The problems existing in the circular air door at present：

1. The damper changes the flow direction of the material, so that the wall of the cylinder and the pipeline connected to it are seriously worn ;

2. The main shaft of the air door is exposed to high-speed airflow, and the wear is serious, resulting in inflexible rotation and jamming of the baffle.