The necessity of door closers in fire doors



The first function is the damping buffer effect, the damping buffer occurs after the fast opening to the positioning, and the damping buffer force and category can be adjusted by the force itself; The effect is used to prevent the door or lock from colliding with the wall when the door is opened forcefully and quickly, or to prevent the person from tilting forward and falling to the ground when the fire door is opened quickly in an emergency escape. There is also the case that when people panic, too much force causes a large reaction force to prevent the huge reaction force from hurting people.



The second function of the steel fire door close device is to delay the closing of the door slowly, and the door starts from the larger position of the door, which can be adjusted according to the detailed momentum. It is suitable for many people, especially in hospitals, welfare homes and other places where there are old people, children and disabled people. It can be settled on the door with a large difference between the door weight and the door width, and on occasions where the door is closed with greater resistance due to special circumstances.