A multi-layer composite fire door structure

Abstract

The utility model discloses a multilayer composite fireproof door structure, its characterized in that: including by door inside to door outside the first aluminium alloy plate layer, first fireproof board layer, aluminium honeycomb board layer, second fireproof board layer, second aluminium alloy plate layer are arranged in proper order, wherein the thickness of aluminium honeycomb board layer accounts for three fifths to seven tenths of door total thickness, the thickness of first fireproof board layer and second fireproof board layer accounts for one tenth of door total thickness respectively, both ends of honeycomb board layer all are provided with aluminium alloy framework, and the inboard of aluminium alloy framework is provided with steel lining. The utility model has the beneficial effects including: lighter, good fire -resistant performance, low manufacturing cost, high structural strength can keep a certain time not deforming under high temperature when the fire breaks out.

Description

Technical Field

[0001] This utility model relates to the field of fire doors, specifically to a multi-layer composite fire door structure. Background Technology

[0002] Fire doors are doors that can meet the requirements for fire resistance stability, integrity, and thermal insulation for a certain period of time. In addition to the functions of ordinary doors, fire doors also prevent the spread of fire and smoke, ensuring the safe evacuation of personnel. Traditional interior doors are usually made of a single material or have a layer of another material sandwiched between two panels; these doors have poor fire resistance and cannot meet fire protection requirements. Summary of the Invention

[0003] In view of the shortcomings of the prior art, this utility model provides a multi-layer composite fire door structure that can meet the requirements of anti-theft and heat preservation while having excellent fire resistance.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A multi-layer composite fireproof door structure is characterized by comprising, in sequence from the inside to the outside of the door, a first aluminum alloy plate layer, a first fireproof plate layer, an aluminum honeycomb plate layer, a second fireproof plate layer, and a second aluminum alloy plate layer, wherein the thickness of the aluminum honeycomb plate layer accounts for three-fifths to seven-tenths of the total thickness of the door, and the thickness of the first and second fireproof plate layers each accounts for one-tenth of the total thickness of the door. Each end of the honeycomb plate layer is provided with an aluminum alloy frame, and the inner side of the aluminum alloy frame is provided with a steel lining.

[0006] Furthermore, the outer end face of the aluminum alloy frame is flush with the end faces of the first fireproof board layer and the second fireproof board layer.

[0007] Furthermore, the outer end face of the aluminum alloy frame has a groove, and an aluminum alloy frame is embedded in the groove. The aluminum alloy frame completely covers the first fireproof board layer, the aluminum alloy frame, and the second fireproof board layer. The two ends of the aluminum alloy frame are bent and overlap with the aluminum alloy board layer and the second aluminum alloy board layer.

[0008] Furthermore, a fire-resistant expansion strip is embedded in the middle of the outer side of the aluminum alloy frame.

[0009] Furthermore, the first fireproof board layer and the second fireproof board layer are one or more combinations of magnesium oxide board, perlite board, fireproof gypsum board, and silicate fiberboard.

[0010] The advantages of this utility model include: light weight, good fire resistance, low manufacturing cost, high structural strength, and the ability to remain undeformed for a certain period of time under high temperature during a fire. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 yes Figure 1 A magnified view of a portion of the image. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0014] One such Figure 1-2 The multi-layer composite fire door structure shown includes, from the inside to the outside of the door, a first aluminum alloy plate layer 1, a first fireproof plate layer 2, an aluminum honeycomb plate layer 3, a second fireproof plate layer 4, and a second aluminum alloy plate layer 5. The first aluminum alloy plate layer 1, the first fireproof plate layer 2, the aluminum honeycomb plate layer 3, the second fireproof plate layer 4, and the second aluminum alloy plate layer 5 are bonded together as a whole using a composite process. The thickness of the aluminum honeycomb plate layer 3 accounts for three-fifths to seven-tenths of the total door thickness, while the thicknesses of the first fireproof plate layer 2 and the second fireproof plate layer 4 each account for one-tenth of the total door thickness; the thicknesses of the first aluminum alloy plate layer 1 and the second aluminum alloy plate layer 5 are approximately equal. To enhance the structural strength of the fire door, aluminum alloy frames 6 are provided at both ends of the honeycomb plate layer 3, and steel linings 7 are provided inside the aluminum alloy frames 6, thus ensuring that the main structure of the door remains undeformed under high-temperature environments.

[0015] like Figure 2 The outer end face of the aluminum alloy frame 6 shown is flush with the end faces of the first fireproof board layer 2 and the second fireproof board layer 4. The outer end face of the aluminum alloy frame 6 has a groove 10, in which an aluminum alloy frame 8 is embedded. The aluminum alloy frame 8 completely covers the first fireproof board layer 2, the aluminum alloy frame 6, and the second fireproof board layer 4. After being bent at both ends, the aluminum alloy frame 8 overlaps with the aluminum alloy board layer 1 and the second aluminum alloy board layer 5. The aluminum alloy frame 8 has the functions of reinforcing the door and decorative structure.

[0016] To improve the smoke sealing effect of the door during a fire, a fireproof expansion strip 9 is embedded in the middle of the outer side of the aluminum alloy frame 8 in this embodiment. The fireproof expansion strip 9 is non-flammable and has a certain expansion performance at high temperatures. After expansion, it can abut against the door frame to improve the sealing performance.

[0017] To improve the fire resistance of the door, the first fireproof board layer 2 and the second fireproof board layer 4 in this embodiment are one or more combinations of magnesium oxide board, perlite board, fireproof gypsum board, and silicate fiberboard.

[0018] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A multi-layer composite fire door structure, characterized in that: The door includes a first aluminum alloy plate layer (1), a first fireproof plate layer (2), an aluminum honeycomb plate layer (3), a second fireproof plate layer (4), and a second aluminum alloy plate layer (5) arranged sequentially from the inside to the outside of the door. The thickness of the aluminum honeycomb plate layer (3) accounts for three-fifths to seven-tenths of the total thickness of the door. The thickness of the first fireproof plate layer (2) and the second fireproof plate layer (4) accounts for one-tenth of the total thickness of the door. Both ends of the honeycomb plate layer (3) are provided with aluminum alloy frames (6), and the inner side of the aluminum alloy frames (6) is provided with steel linings (7).

2. The multi-layer composite fire door structure according to claim 1, characterized in that: The outer end face of the aluminum alloy frame (6) is flush with the end faces of the first fireproof board layer (2) and the second fireproof board layer (4).

3. The multi-layer composite fire door structure according to claim 1, characterized in that: The outer end face of the aluminum alloy frame (6) has a groove (10), and an aluminum alloy frame (8) is embedded in the groove (10). The aluminum alloy frame (8) completely covers the first fireproof board layer (2), the aluminum alloy frame (6), and the second fireproof board layer (4). The two ends of the aluminum alloy frame (8) are bent and overlap with the aluminum alloy board layer (1) and the second aluminum alloy board layer (5).

4. The multi-layer composite fire door structure according to claim 3, characterized in that: A fireproof expansion strip (9) is embedded in the middle of the outer side of the aluminum alloy frame (8).

5. The multi-layer composite fire door structure according to claim 1, characterized in that: The first fireproof board layer (2) and the second fireproof board layer (4) are one or more combinations of magnesium oxide board, perlite board, fireproof gypsum board and silicate fiberboard.

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