Smoke exhaust system for fire-fighting engineering

Abstract

The invention relates to a smoke exhaust system for fire-fighting engineering. The smoke exhaust system comprises a smoke alarm, a main air pipe communicated with the interior of a building, an auxiliary air pipe communicated with the main air pipe, a bidirectional fan fixed in the main air pipe, a switching device and a controller, the smoke alarm is electrically connected with the controller, the controller is electrically connected with the bidirectional fan, the switching device comprises an air inlet plate vertically arranged in an auxiliary air pipe, a guide rod horizontally penetratingthrough the air inlet plate and in sliding fit with the air inlet plate, a sealing plate fixed to the end of the guide rod, a closed air bag arranged between the sealing plate and the air inlet plate,and an air pump fixed to the auxiliary air pipe and communicated with the closed air bag. The air pump is electrically connected with the controller. An air inlet is formed in the plate surface of the air inlet plate, and the two sides of the closed air bag are movably sealed with the inner side walls of the two sides, parallel to the length direction of the guide rod, of the main air pipe. The effects of smoke discharge, ventilation and air exchange are obtained, and the utilization rate of the air pipe is increased.

Description

technical field [0001] The invention relates to the technical field of fire-fighting facilities, in particular to a smoke exhaust system used in fire-fighting engineering. Background technique [0002] Fire protection engineering is an important part of modern architectural design. Every year, the loss of people's lives and property due to building fires is innumerable, so it is particularly important to prevent fires. Severe fires will not only cause a large amount of property loss, but also cause a large number of casualties, so when building construction and building facility layout, fire emergency measures are usually set up. When a fire occurs, a large amount of smoke and dust will be produced. The smoke and dust usually contain a large amount of carbon monoxide, carbon dioxide and other gases that are harmful to the human body. An emergency smoke exhaust system will be set up to reduce the smoke and dust in the fire, thereby improving the escape rate of people in the ...

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Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: this type of smoke exhaust system can only discharge the smoke and dust in the building, and

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