Steel door capable of fire prevention, theft prevention and noise prevention

Abstract

The invention discloses a steel door capable of fire prevention, theft prevention and noise prevention. The steel door comprises a door leaf, a door frame and hinges, wherein the door leaf comprises a frame body and an inorganic fire-prevention core material plate; the door plate and the door frame are matched together through two bounded constructions; the first bounded construction comprises a first protrusion and a first groove; the second bounded construction comprises a second protrusion and a second groove; when the door leaf is in a closed state, the door leaf is wholly positioned in the door frame, and the first protrusion and the second protrusion are respectively positioned in the first groove and the second groove; when the door leaf is closed, a fire-prevention inflated sealing rubber strip closes a gap between the first groove and the first protrusion on the panel door frame of the door leaf, and a gap between the second groove and the second protrusion. The steel door has the advantages of favorable integrated intensity, favorable soundproof effect and favorable anti-theft effect, so that the safety factor of an anti-theft door can be greatly improved.

Description

technical field [0001] The invention relates to a fireproof door, in particular to a fireproof, theftproof and noiseproof steel door. [0002] Background technique [0003] Steel fire doors are mainly composed of two parts, the door frame and the door leaf. In 2008, the Ministry of Public Security drafted a new version of the standard GB12955-2008 for fire doors. The new standard stipulates that non-degradable fibers should not be used as the fire door core material in the fire door core material. Therefore, Most of the current fire door core materials use perlite board; however, due to the poor bonding strength of perlite board itself, it is easy to disconnect after bonding with the steel plate, and factors such as processing deformation, thermal deformation, and collision deformation of the thin steel plate have always caused problems. The bond with the perlite board is not firm, which directly affects the overall performance of the fire door. [0004] However, when a fi...

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Problems solved by technology

[0003] Steel fire doors are mainly composed of two parts, the door frame and the door leaf. In 2008, the Ministry of Public Security drafted a new version of the standard GB12955-2008 for fire doors. The new standard stipulates that non-degradable fibers should not be used as the fire door core material in the fire door core material. Therefore, Most of the current fire door core materials use perlite board; however, due to the poor bonding strength of perlite board itself, it is easy to disconnect after bonding with the steel plate, and factors such as processing deformation, thermal deformation, and collision deformation of the thin steel plate have always caused problems. The bond with the perlite board is not firm, which directly affects the overall performance of the fire door

[0004] However, when a fire breaks out, the steel fire door frame processed by single-layer steel plate cannot meet the performance requirements of the fire-proof door due to the high thermal conductivity of steel and the rapid temperature rise on the back side; the strength of the single-layer steel plate after processing is weak , the fireproof door frame is easy to deform; the door leaf of the steel fireproof door is made of upper and lower two layers of thin steel plates and perlite boards. The bonding between the steel plate and the perlite board does not meet the requirements for fire doors, and if it is hit by an external force, it is easy to cause the perlite board and the panel to be disconnected, which does not meet the fire protection requirements

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