Steel heat-insulation fireproof door leaf

Abstract

The invention discloses a steel heat-insulation fireproof door leaf. The steel heat-insulation fireproof door leaf comprises a door leaf body, wherein the door leaf body comprises a frame and a steelskin, and a filling cavity is formed between the frame and the steel skin; a steam generation mechanism comprises a water storage tank, heat conduction fins are arranged outside the water storage tank, the heat conduction fins are connected with the water storage tank and the metal skin, the water storage tank is connected with an air guide pipe, and an air guide one-way valve is arranged on the air guide pipe; a pressurizing spraying mechanism comprises a pressurizing cylinder; a piston body is connected in the pressurizing cylinder in a sealing and sliding mode; the piston body divides the pressurizing cylinder into an upper cavity and a lower cavity, the upper cavity communicates with the air guide pipe; the lower cavity is filled with fire extinguishing liquid; the lower cavity is connected with a high-pressure hose; a pressure release valve is arranged on the high-pressure hose; the high-pressure hose is connected with a front flow dividing pipe and a rear flow dividing pipe; andthe front flow dividing pipe and the rear flow dividing pipe are connected with a water mist spray head correspondingly. According to the arrangement, when a fire source approaches the door leaf, corresponding fire extinguishing operation can be automatically carried out, the temperature around the door leaf is reduced, and therefore good heat insulation and fireproof effects are achieved.

Description

technical field [0001] The invention relates to the field of fire doors, in particular to a steel heat-insulating fire door leaf. Background technique [0002] A fire door is a door that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. It is a fire-resistant partition with certain fire resistance located in fire compartments, evacuation stairwells, vertical shafts, etc. In addition to the function of ordinary doors, fire doors also have the function of preventing the spread of fire and smoke. It can prevent the spread of fire within a certain period of time and ensure the evacuation of people. [0003] The steel fire door refers to the use of steel materials to make the door frame, door frame and door panel. If the door is filled with materials, it will be filled with non-toxic and harmless fireproof and heat insulation materials, and it is composed of fireproof hardware accessories. One is a door wit...

AI Technical Summary

Problems solved by technology

[0004] The fireproof and heat insulation performance of the existing steel fireproof doors is generally limited by the performance of the firepr

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