A self-closing fire door

Abstract

The invention discloses a self-closing fire door which comprises a door frame, wherein a partition board is fixedly connected to the middle of the door frame; door panels are mounted on two sides of the partition board; a gas storage tank is fixedly connected to the middle of the partition board in a sleeving manner; gas pipes communicating with the gas storage tank are mounted on two sides of thepartition board; an adjustment mechanism is mounted on the top of the gas pipes; the output end of the adjustment mechanism is connected with a connecting pipe of a ring structure arranged around theinner ring of the door frame; gas ejection pipes fixedly connected to the door panels in a sleeving manner are mounted at the sides, away from the partition board, of the connecting pipe; the adjustment mechanism comprises a heat conducting rod fixedly connected to the door panels in a sleeving manner; the outer ring of the heat conducting rod is fixedly sleeved with a housing with an opening atthe top; and a sleeve is movably connected to the opening at the top of the housing in a sleeving manner. The self-closing fire door is simple in structure and convenient to operate, and can automatically eject liquid carbon dioxide to extinguish the fire and lower the temperature for the fire door and surroundings of the fire door without the need for an external control installation in the eventof a fire, thereby effectively improving the fire prevention function and fire prevention time of the fire door.

Description

technical field [0001] The invention relates to the technical field of fire doors, in particular to a self-closing fire door. 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 personnel. Traditional fire doors have a single function and a short fire prevention time. This requires a self-closing fire door. Contents of the invention [0003] The object of the present invention is to propose a self-closing fire door in order to solve the shortcomings in the prior art. [0004] In order to achieve...

AI Technical Summary

Problems solved by technology

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. Traditional fire doors have single functions and short fire protection time. This requires a self-closing fire door

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