Fire-fighting smoke exhaust valve

Abstract

The invention discloses a fire-fighting smoke exhaust valve. The fire-fighting smoke exhaust valve comprises a box body, wherein a channel cavity is arranged in the box body, a frame is arranged at one side of the channel cavity, and a rotating blocking device for rotating the frame and changing a channel space in the frame so as to block smoke effectively is arranged between the frame and the boxbody; the lower side of the rotating blocking device is provided with a lifting annular pipe device located in the channel cavity and using a lifting method and an annular structure, so that the channel cavity communicates with the position of the lower side of an external space in the channel cavity and smoke damage can be avoided when personnel pass through the channel cavity; the equipment adopts the control of internal blades of a fire valve, so that the equipment can turnover some blades according to actual situations, the smoke discharge is more efficient; and moreover, a structure forthe personnel to enter a pipeline to escape is formed so as to isolate the smoke, and the possibility and safety of escaping when the personnel enter the pipeline are increased.

Description

technical field [0001] The invention relates to the technical field of fire-fighting equipment, in particular to a fire-fighting and smoke exhaust valve. Background technique [0002] In the prior art, most of the fire-fighting smoke exhaust valves are used in conjunction with ventilation shafts. Conventional smoke exhaust valves cannot effectively isolate the smoke at the ventilation shafts, so that the smoke is at the top side and the personnel can effectively pass through the ventilation. Well, due to the existence of the ventilation shaft and the smoke exhaust valve, in a fire, the smoke will directly enter the ventilation shaft through the smoke exhaust valve, causing more smoke to accumulate in the ventilation shaft, and because the control structure of the ventilation valve in the conventional design is too simple , so that the discharge process of air and smoke is relatively slow, which affects the discharge of smoke and fills the room and passages with smoke, making...

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Problems solved by technology

[0002] In the prior art, most of the fire-fighting smoke exhaust valves are used in conjunction with ventilation shafts. Conventional smoke exhaust valves cannot effectively isolate the smoke at the ventilation shafts, so that the smoke is at the top side and the personnel can effectively pass through the ventilation. Well, due to the existence of the ventilation shaft and the smoke exhaust valve, in a fire, the smoke will directly enter the ventilation shaft through the smoke exhaust valve, causing more smoke to accumulate in the ventilation shaft, and because the control structure of the ventilation valve in the conventional design is too simple , so that the discharge process of air and smoke is relatively slow, which affects the discharge of smoke and fills the room and passages with smoke, making it difficult for people to breathe or reduce the probability of survival when escaping, which makes the equipment unable to perform normally to meet the needs of people. Daily needs, and the corresponding safety factor is also low

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