fire-proof door

Abstract

The invention belongs to the field of fire prevention or inhibition, and particularly discloses a fireproof door which comprises a door frame, rolling door bodies matched with the door frame, and rotary shafts rotatably connected to the top of the door frame. The rolling door bodies are mounted on the rotary shafts. The fireproof door further a protective cover, a mounting rack, plastic bags, a telescopic plate, an electromagnet and a balance weight plate. The protective cover is arranged outside the rotary shafts in a covering mode. The mounting rack is fixed into the protective cover. The balance weight plate is fixed to the free ends of the rolling door bodies. The telescopic plate is connected between the protective cover and the balance weight plate. Reaction cavities are formed by the balance weight plate, the telescopic plate and the rolling door bodies. The two ends of the plastic bags are separately fixed to the protective cover and the balance weight plate. The rolling door bodies are provided with extinguishing ports. The electromagnet is fixed to the protective cover. The balance weight plate is an iron balance weight plate, and the balance weight plate and the electromagnet attract each other. The plastic bags are internally provided with a sodium bicarbonate solution. The reaction cavities are internally provided with an aluminum sulfate solution. By adoption of the scheme, the door can be automatically closed when a fire occurs, and operation is convenient.

Description

technical field [0001] The present invention belongs to the field of fire prevention or suppression. Background technique [0002] Fire doors are widely used in high-rise buildings, industrial and civil buildings, and it has been proved that fire doors can effectively prevent the spread of fire. The supporting equipment for fire shutters include: smoke detectors, temperature detectors, linkage controllers, etc. The actions of these equipments in conjunction with the shutter door are all carried out under the condition of strong or weak current. Yet once fire takes place, the measure that people take at first is to cut off power supply, spreads because of electrical equipment in case fire, and this moment, fire door is just under the state of no electricity, and can not drive electric gate to control rolling shutter door. [0003] More importantly, when a fire breaks out, the circuit burns and short-circuits, which is often accompanied by unexpected situations such as power ...

AI Technical Summary

Problems solved by technology

[0003] More importantly, when a fire breaks out, the circuit burns and short-circuits, which is often accompanied by unexpected situations such as power outages and power outages. If a fire breaks out in a building at this time, the fire doors cannot be closed automatically, which will also cause property damage and casualties.

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