What kinds of underground dampers are there? What are their uses?

Answer: According to the different uses and opening methods of air doors, air doors can be divided into ordinary air doors, regulating air doors, automatic air doors and reverse air doors. Ordinary damper is used to cut off the airflow in the roadway, which is opened by manpower and closed by self-weight and wind pressure difference. It is often set in pedestrian lanes or lanes with less traffic. The air door is similar to the ordinary air door in structure, except that an air door and window are arranged above the air door to limit the air flow through the roadway. Automatic air door is a kind of air door that can be automatically opened and closed by external force, which is suitable for the roadway where harvesters often pass. The reverse air door is the place where the air door is set between the main air inlet tunnels in the mine. At the same time, a reverse damper should be set to open and close normally when the wind blows. Reverse damper can be divided into reverse damper and outburst prevention reverse damper.