Introduced:

No pressure damper and ordinary non pressure damper as mainly used for coal mine into the return airway and the main return air roadway between each contact in the lane. Mining pressure damper is a kind of ideal Air China's coal mine, he put in the air pressure into an internal force, the balance mechanism will balance out; non pressure air door structure is unique, simple and practical, safe and reliable quality.

Characteristic：

1, non pressure air door opening force, opening force and air pressure and wind direction has nothing to do;

2, two-way air isolation, small amount of air leakage, no longer need to set back door;

3, steel structure, the structure is simple, strong and durable;

4, close smooth, safe and reliable;

5, fire performance is good, can effectively prevent the belt transport lane possible fire, prevent fire and harmful gas into other roadway;

6, pressure balance type throttle can listen to the manual operation, but also dynamic operation, such as adding a set of control system, automatic door opening;

Between the 7 and the two damper can achieve mutual locking.