Fire-resistant iron sheet air pipe

Abstract

The invention relates to a fire-resistant iron sheet air pipe. The problems of poor fire-resistant effect, high construction difficulty and the like in the prior art are solved, the technical solutionis characterized in that fire-resistant plates are spliced on the outer wall of the iron sheet air pipe body to form a fire-resistant iron sheet air pipe body, the fire-resistant plates are encircledto form a tubular structure with a square cross section, the adjacent fire-resistant iron sheet air pipe body is connected through a flange, and the flange is coated with a fireproof material layer.The fire-resistant iron sheet air pipe has the effects that the fire-resistant iron sheet is directly compounded on the iron sheet air pipe body, the fire-resistant iron sheet and the iron sheet air pipe body directly have no space structure, the flange used for connecting the adjacent air pipe body is exposed, the fire-resistant purpose is achieved by coating fire-resistant materials with the same fire-resistant time, namely the fire-resistant requirement is met, the space occupied by the air pipe body can be greatly reduced, an available space among floors in a building is increased, and moreover, the iron sheet air pipe body is wrapped on the ground and then hoisted, so that the construction is convenient, and the labor intensity is low.

Description

technical field [0001] The invention relates to an iron sheet air duct for building, in particular to a refractory iron sheet air duct. Background technique [0002] At present, the iron sheet air ducts suitable for buildings are usually not fire-resistant. When a fire breaks out in a building, the air ducts will be melted by the fire in an extreme time, cutting off the ventilation channel, and it is not conducive to the escape of people in the building. For this reason, the fire resistance requirements for air ducts are put forward. Currently, if figure 1 As shown, the installed iron air duct is covered with a fireproof board. The installed metal air duct has flanges (used to connect adjacent iron air ducts), hangers (including crosspieces and suspenders whose lower ends are fixed on the crosspieces, and the crosspieces are used to accept horizontal iron windpipes. pipe 1', the upper end of the boom 6 is fixed on the floor slab). When covering the fireproof board, it is...

AI Technical Summary

Problems solved by technology

Therefore, the iron sheet air duct with fire-resistant effect of this structure takes up too much space, which affects the usable space of the building

When the height between the middle floors of the building itself is small, the use of iron air ducts with this fire-resistant effect may even lead to the ineffective use of the space on the floor, causing serious waste

Moreover, it is very difficult to cover the fireproof board after the iron sheet air duct is hoisted.

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