Mine air door is an important part in mine ventilation system. The common types of mine mine air door damper, dual door, fire and fence to open the non pressure air door, fireproof and waterproof sealing door. The following Xiaobian introduce, are as follows:

1, mining the dampers. The mine air door manually controlled by mechanical transmission, change the door window to change the wind, the ventilation area, to achieve the purpose of flow control ventilation.

2, ZMK-127 air door locking device. Mounted on a single door or double doors and other facilities at the door, two door cannot be opened at the same time, to avoid the two air doors open at the same time the airflow caused by short circuit, ensure the safety of mine ventilation system. The interlock device is divided into mechanical, pneumatic, electromagnetic type three.

3, fire and dual-purpose door fence. The main mine air door is installed between the main drainage pumping station and underground coal mine main substation chamber and mining area substation, belt conveyor, hoist electrical equipment, distribution transformer chamber, trollege garage, battery motor base, fire fighting equipment base, communication room and charging room and other chamber, material library at. The main isolation effect of personnel, to prevent non professional personnel to enter an important place, also in the dangerous environment can play the role of preventing fire isolation, fire spread.

4, to open non pressure air door. Is a kind of automatic air door is ideal at present in China coal mine, mainly used in the mine, in return airway and main return airway, contact between each lane, non pressure air door broke the old traditional structure for a long time the mine air door open, cleverly put pressure on the air door through the balanced structure turn it into a kind of internal force, fully demonstrated the door structure is unique, easy to use, safe and reliable, highly appraised by the experts and users, is currently used in the mine air door entry substitute.

5, fire waterproof airtight door. In the coal mine main substation and main drainage pump room to the bottom of the channel, fireproof and waterproof sealing door can be easily set off, and both waterproof and fireproof door closed.