Anti-explosion and anti-disassembly fire exit door and secondary protection structure thereof

Abstract

The invention relates to the field of explosion-proof fire exit door equipment, in particular to an anti-explosion and anti-disassembly fire exit door and a secondary protection structure thereof. Theanti-explosion and anti-disassembly fire exit door comprises a fire exit door main body and a door frame, wherein an inward-retracting device is movably installed on the front face of the fire exit door main body, a locking block is movably installed inside the fire exit door main body, a trigger plate is movably installed inside the fire exit door main body, and a smoke sealing device is movablyinstalled inside the door frame. One side of the inward-retracting device penetrates into the fire exit door main body, a connecting rod is fixedly installed on the side, facing the inward-retractingdevice, of the locking block, and the connecting rod is embedded into the outer side of the inward-retracting device, so that when indoor fire causes explosion, impact generated by the explosion makes contact with the inward-retracting device firstly, the inward-retracting device is driven to overcome the acting force of springs to move towards the interior of the fire exit door main body, so that embedding with the connecting rod is disconnected, the locking block moves outwards under the action of the springs on the two sides and enters the interior of a locking opening, the two sides of the fire exit door main body are thoroughly locked, and impact force generated by explosion is blocked.

Description

technical field [0001] The invention relates to the field of explosion-proof fire door equipment, in particular to an explosion-proof dismantled fire door and its secondary protection structure. Background technique [0002] Fire doors, also known as fire doors, refer to doors that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. It is a fire partition with certain fire resistance located in the fire compartment, evacuation stairwell, vertical shaft, etc. The fire door defined by the American NFPA and IBC specifications is "any fire door that can jointly provide a certain degree of fire protection for the opening. , door sill, hardware and other accessories combination. [0003] However, most of the existing fire doors cannot be effectively protected against the impact of explosions in fires, resulting in the fire doors being easily demolished by the impact force in the explosion, thus threatening the ...

AI Technical Summary

Problems solved by technology

[0003] However, most of the existing fire doors cannot provide effective protection in the face of the impact of an explosion in a fire, causing the fire doors to be easily demolished by the impact force in the explosion, thereby threatening the lives of people behind the door. life safety needs

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