Elastic composite smoke-proof strip

Abstract

The invention provides an elastic composite smoke-proof strip which comprises a long-strip-shaped fire-proof base plate and a plurality of metal supports fixed to the fire-proof base plate. The metal supports are arch-shaped supports with horizontal top portions, the two ends of each metal support are fixed to the portions, close to the two sides, of the fire-proof base plate through elastic connecting bases respectively, the metal supports are arranged in parallel, and an arch-shaped air channel with a horizontal top is formed between the metal supports and the fire-proof base plate. The outsides of the elastic metal supports are covered with metal and non-metal composite layers, the two side edges of each metal and non-metal composite layer are connected with the fire-proof base plate in a sealed mode to form an arch-shaped surface with a horizontal top surface. The elastic composite smoke-proof strip is simple in structure and high in applicability and has airtight and high-temperature resistant performance; elastic pre-tightening force of the working surface of the elastic composite smoke-proof strip can be adjusted within a certain scope so that a smoke-proof device can be more evenly and tightly attached to a shutter surface; the elastic composite smoke-proof strip can be used as the smoke-proof device and is arranged in a fire-proof and smoke-proof roller shutter to block spreading of smoke and transmitting of heat.

Description

technical field [0001] The invention provides a smoke prevention device, in particular an elastic composite smoke prevention strip which can be used as a smoke prevention device and arranged in a fireproof and smokeproof rolling curtain to prevent smoke from spreading and propagating. Background technique [0002] Fire shutters are important separation facilities in buildings. Existing regulations for fire shutters stipulate that smoke-proof devices must be installed in the guide rails and lintels of fire-proof and smoke-proof shutters. The existing smoke-proof devices are mainly smoke-proof strips, which can be divided into two types according to the principle: one is to block the gap by expanding itself when a fire occurs, and block the air circulation between the two spaces; the advantage of this smoke-proof strip is that The seal is tight and the smoke-proof effect is good. The disadvantage is that due to the change of properties, the material can only be used once, and ...

AI Technical Summary

Problems solved by technology

The existing smoke-proof devices are mainly smoke-proof strips, which can be divided into two types according to the principle: one is to block the gap by expanding itself when a fire occurs, and block the air circulation between the two spaces; the advantage of this smoke-proof strip is that The seal is tight and the smoke-proof effect is good. The disadvantage is that due to the change of properties, the material can only be used once, and it is inconvenient to deal with the residue after use, which will have adverse effects on the use parts such as guide rails and door lintels; the other is by attaching fire-resistant The substrate of the material presses the curtain surface to realize the smoke-proof sealing effect, but due to the fact that the contact surface and the curtain surface have a certain roughness, and the disturbance of the curtain surface during work and the processing accuracy and other factors make the two planes not completely fit tightly

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