Mining positive and negative air doors and pneumatic locking devices

A set of coal mine forward and reverse air doors, including 2 forward and 2 reverse or 4 forward and 4 reverse, are products that complement each other during the use of mining forward and reverse air doors and pneumatic air door locking devices in coal mines; The air door interlock system can ensure that two remote fully automatic forward facing door panels cannot be opened simultaneously.

Some people may not be clear about what is a forward air door and what is a reverse air door in mining; Jinan Dongshan believes that the forward air door is opened against the wind, and the reverse air door is opened in the direction of the wind.

Mining positive and negative air door manufacturers often use stainless steel or bamboo plywood, polyvinyl chloride polymer board, iron, and other processing materials during production; Regardless of the type of coal mine pneumatic positive and negative air door, it is necessary to ensure that the air leakage rate is less than 3% to be qualified. For example, when encountering tunnels with high wind pressure, the outer diameter of the door leaf of the mining positive and negative air door should be greater than the inner diameter of the door frame. This scientific design scheme ensures that the door leaf does not deform and ensures a very small air leakage rate.