Steel insulation fire door

Abstract

The invention relates to a steel heat insulation fireproof door. Each door leaf of the fireproof door comprises a framework and a door leaf panel; each of the frameworks and the door leaf panels is formed by cold rolled galvanized steel plates through rolling; each door leaf panel covers the outer side of the corresponding framework to form a two-layer flat box body; composite fireproof door core materials are injected into each two-layer flat box body; main bodies of two-layer door leaves are formed; the main bodies of the two-layer door leaves form an integral door leaf; a gap exists between the main bodies of the two-layer door leaves; the door leaves with the hollow middles are formed; an air inlet hole is formed in the lower end, corresponding to the hollow part, of each door leaf; the upper end and the side end of each door leaf are provided with exhaust holes; and the inner side surface and the outer side surface of each door leaf are provided with seam covering plates corresponding to door seams of the two door leaves. The steel heat insulation fireproof door has the advantages that the problem that the existing fireproof door cannot prevent fire and smoke from overflowing through the door seams; the integral flame-resistant or high-temperature-resistant performance of the fireproof door is poor; and the door can easily deform. The steel heat insulation fireproof door has the advantages that the all-around fireproof function is realized; the heated deformation of the door body after the fire catching can be prevented; and the flame and smoke overflowing can also be effectively prevented.

Description

technical field [0001] The invention relates to a fireproof door, in particular to a steel heat-insulating fireproof door. Background technique [0002] A fire door is a door that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. It is located in fire compartments with certain fire resistance, such as fire compartments, evacuation stairwells, vertical shafts, and distribution rooms. In addition to the function of ordinary doors, it also has the function of preventing the spread of fire and smoke. It can prevent the spread of fire within a certain period of time and ensure the evacuation of personnel. [0003] In the existing fire doors, the door leaf structure adopts the mode of hollow door leaf filling material, and the filling material is generally expanded perlite or the like. Due to design and structural problems, such a fire door has a large amount of deformation, and it is difficult to prevent fi...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem that the existing fire doors cannot prevent the fire and smoke from overflowing from the gap of the door, and the problem that the fire resistance or high temperature resistance of the fire doors as a whole is not strong and easy to deform. A kind of all-round fire-proof function, which can not only prevent the door body from being deformed by heat after being caught on fire, but also effectively prevent the fire and smoke from overflowing.

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