Fireproof smoke discharging air passage

Abstract

The invention discloses a fireproof smoke discharging air passage which is of an integral structure made from fireproof materials. Compared with the traditional technical scheme, the invention has the advantages that the fireproof smoke discharging air passage is manufactured by using an extrusion moulding method or a die moulding method, therefore, the procedures are simple; multiple procedures are saved so as to save labor force and cost, such as a procedure of manufacturing a fireproof plate and procedures of cutting the fireproof plate and splicing the fireproof plate; and the fireproof smoke discharging air passage is environment-friendly and reliable. Because the fireproof smoke discharging air passage is of the integral structure, the fireproof smoke discharging air passage does not need to connect and fix by glue, connecting nails and the like, and the whole structure is made from the fireproof materials so as not to have a weak link, thereby the whole reliability is consistent and the intensity is high; with the light quality and the fireproof performance, compared with the conventional fireproof smoke discharging air passage, the finished product made from the used fireproof materials is thinner in wall thickness under the condition of meeting the requirement on the fireproof performance, the whole quality is light, the installation is convenient and the cost is saved; and the structure is variable to be manufactured into smoke discharging air passages with different specification shapes according to the requirements.

Description

technical field [0001] The invention relates to a public smoke-exhausting airway for residential buildings, in particular to a fire-proof smoke-exhausting airway. Background technique [0002] In residential buildings, apartment buildings and other buildings, it is necessary to design public smoke exhaust ducts. The smoke exhaust pipes and bathroom exhaust pipes of each household are connected with the public smoke exhaust ducts through connecting pipes, and the smoke is passed through the public exhaust ducts. The exhaust gas channel is exhausted from the exhaust port on the top. [0003] The public smoke exhaust ducts used in the past were basically prefabricated with ordinary cement materials or poured on site or bricked and cut on site. System" standard, the combustion performance and fire resistance limit of the exhaust flue are clearly defined as: the flue exhaust duct and its pipe wall should use non-combustible objects with a fire resistance rating of not less than ...

AI Technical Summary

Problems solved by technology

But at the same time, there are still the following disadvantages: (1), the process is complicated, and the fireproof board needs to be cut before assembling; (2), the reliability of use is poor, and glue and connecting nails are used to connect and fix when assembling. It is easy to corrode and age, and then it is easy to appear points with poor connection performance, which affects the overall reliability of use; (3), does not meet environmental protection requirements, and glue will inevitably be used during assembly. The glue contains formaldehyde and benzene compounds , polycyclic olefins, etc., formaldehyde, benzene compounds, polycyclic olefins and other harmful volatile gases; (4) single structure, only polygonal structures can be produced, and arc-shaped structures cannot be produced, such as circular pipes

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