A fire door middle seam with flame retardant straw fire board

Abstract

The invention discloses a fireproof door middle seam provided with flame-retardant straw fire prevention boards. The fireproof door middle seam comprises a door frame, door leaves and hinges, wherein the door leaves are connected with the door frame by the hinges; a face exposed to fire and a face unexposed to fire are respectively formed at the two sides of each door leaf; a middle seam is formed by the contact surfaces of the left door leaf and the right door leaf; the left door leaf and the right door leaf are respectively formed by two parts, wherein the four flame-retardant straw fire prevention boards are arranged in the parts at the sides close to the middle seam, and the other parts connected with the flame-retardant straw fire prevention boards are made from steel section; a seam cover plate is also arranged in the fireproof door middle seam and is formed by cutting the flame-retardant straw fire prevention board. The fireproof door middle seam creatively overcomes the defect that a middle seam of the traditional steel or wooden fireproof door is easily deformed in the event of high temperature of a fire; the flame-retardant straw fire prevention boards are set as the parts, close to the middle seam, of the door leaves and the seam cover plate, so that the effects of fire prevention, flame retardance and smoke suppression are effectively achieved; the fireproof door middle seam guarantees the stability of a framework structure of the fireproof door when the fireproof door is in a fire; the middle seam is non-deformable and fireproof.

Description

technical field [0001] The invention belongs to the technical field of fire doors, in particular to a middle seam of a fire door with a flame-retardant straw fireproof board. Background technique [0002] According to the fire protection regulations, the passages of large shopping malls, hotels, hospitals, and entertainment places are required to install fire doors. Because wooden fire doors are more suitable for secondary decoration, customers often use wooden double fire doors on the passage. At present, the weak link in the fire protection of wooden fire doors is the middle seam of the double leaf. There are two ways to make the opening of the wooden double-leaf door on the market: one is to cut the opening on the wooden frame of the door leaf. This form of opening is too narrow (≤15MM), and the fire performance is poor. After the fire lock is installed, The lock body exposes the opening, which affects the decoration of the door; the other is to nail 30MM×6MM wooden str...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, and is to provide a fire-proof door with a flame-retardant straw fire-proof board. Moreover, it does not conduct heat at high temperatures, does not expand when it meets water, and has excellent comprehensive performance, which can completely overcome the problem of deformation of the middle seam of double-leaf fire doors in the actual use process.

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