An alarm type fire door with high fire resistance
A technology of fire resistance and fire door, which is used in fire doors, hydraulic/pneumatic fire alarms, door/window accessories, etc. to achieve stable operation, improve fire resistance, and lengthen fire resistance.
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[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0025] see Figure 1-6 , an alarm type fire door with high fire resistance performance, comprising a fire door body 1, a door lock 2 fixedly installed in the middle of one side of the fire door body 1, and a door closer 3 fixedly installed on the top of the fire door body 1, the door lock 2 is used For locking the fire door, the door closer 3 is used for the fire door to be in a normally closed state. The door closer 3 also has the function of keeping the fire...
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