CN209195233U - A kind of fire resistance steel door - Google Patents

Abstract

The utility model relates to a door, and specifically discloses a steel fireproof door, which comprises two steel panels arranged in parallel and at intervals, steel square frames are fixed on the sides of the two steel panels, and the steel square A housing cavity is formed between the frame and the two steel panels, and a fireproof board is fixed on the inside of the two steel panels, and a heat insulation layer is vertically fixed between the two fireproof boards, and the heat insulation layer adopts Made of expanded perlite; the fireproof board and the heat insulation layer are arranged at intervals, and a reserved cavity is formed between the two fireproof boards and the heat insulation layer; an expansion rubber pad is arranged in the reserved cavity, The outer side of the steel square frame is concavely formed with a sealing groove, and a fireproof expansion sealing strip is fixed in the sealing groove. The utility model provides a steel fireproof door with outstanding heat insulation and fireproof performance, high structural strength, strong impact resistance, not easy to be damaged, and relatively long service life.

Description

steel fire door

technical field

The utility model relates to a door, in particular to a steel fireproof door.

Background technique

Fire doors are one of the necessary safety facilities in modern buildings, which can meet the requirements of fire resistance stability, integrity and heat insulation. Fire doors are usually installed in fire compartments, evacuation stairwells, vertical shafts, power distribution rooms and other fire separation areas with certain fire protection requirements. Traditional steel fire doors are made of all-steel materials, and their fire resistance and structural strength are relatively high, but the heat insulation is seriously insufficient; when a fire occurs, this kind of steel fire doors cannot isolate high temperature, and there is still a large security risks.

Utility model content

Aiming at the problem of insufficient heat insulation of traditional steel fire doors, the purpose of this utility model is to provide a steel fire door, which further improves the safety of steel fire doors by using fireproof boards and heat insulation layers.

In order to achieve the above object, the utility model provides the following technical solutions:

A steel fire door, comprising two steel panels arranged in parallel and at intervals, steel square frames are fixed on the sides of the two steel panels, and a container is formed between the steel square frame and the two steel panels. The inner side of the two steel panels is fitted with a fireproof board, and a heat insulation layer is vertically fixed between the two fireproof boards, and the heat insulation layer is made of expanded perlite.

By adopting the above-mentioned technical scheme, by installing a fireproof board in the accommodation cavity, it is helpful to further improve the overall fireproof ability of the door leaf, and the fireproof board can also play the role of the first heat insulation; expanded perlite products have good heat insulation and fire resistance Therefore, the heat insulation layer made of expanded perlite can greatly improve the overall heat insulation effect of the door leaf; in the event of a fire, while ensuring the fire performance of the door leaf, the steel fire door can effectively isolate high temperature, thereby making the steel fireproof Door security has been further enhanced.

The utility model is further configured as follows: the fireproof board is made of glass magnesium board, and the thickness of the fireproof board is at least 25mm.

By adopting the above technical scheme, the glass magnesium board has excellent characteristics such as high temperature resistance, flame retardancy, high strength, bending resistance and good toughness. Therefore, the fireproof board made of glass magnesium board can further improve the overall fireproof ability of the door leaf; The thickness of the board is not less than 25mm, which can reduce the risk of the fireproof board being burned through.

The utility model is further configured as follows: the fireproof board and the heat insulation layer are arranged at intervals, and a reserved cavity is formed between the two fireproof boards and the heat insulation layer.

By adopting the above technical scheme, since the thermal insulation layer made of expanded perlite will expand in volume when heated, a reserved cavity is reserved between the fireproof board and the thermal insulation layer, which can leave room for the volume expansion of the thermal insulation layer. Sufficient space prevents the heat insulation layer from over-extruding the fireproof board when it is heated and expands, which helps to extend the service life of the steel fireproof door.

The utility model is further configured as follows: an expansion rubber pad is provided against the reserved cavity, and the expansion rubber pad has a square frame structure.

By adopting the above technical scheme, the stability of the fireproof board and the heat insulation layer can be improved by using the expansion rubber pad to press against the fireproof board and the heat insulation layer; at the same time, the expansion rubber pad is set into a square frame structure, and the inner side of the expansion rubber pad will remain Provide enough space to meet the thermal expansion requirements of the insulation layer.

The utility model is further set as follows: the inner side of the steel square frame is provided with a door frame, the two sides of the door frame in the thickness direction are respectively pressed against two fireproof boards, and the four sides of the door frame are respectively pressed against the sides of the steel square frame. Each inner wall; the frame of the door leaf is formed with installation grooves for embedding fireproof boards and heat insulation layers.

By adopting the above technical solution, the door frame can greatly improve the structural strength of the steel fire door and improve the impact resistance of the steel fire door, which not only helps to prolong the service life of the steel fire door, but also further improves its security.

The utility model is further configured as: the expansion fireproof sealant is coated between the heat insulation layer and the inner wall of the frame of the door leaf.

By adopting the above-mentioned technical scheme, even if the steel panel is damaged when a fire occurs, the intumescent fireproof sealant can effectively seal the gap between the heat insulation layer and the inner wall of the door frame after being heated and expanded, thereby effectively blocking the fire and smoke, which contributes to Further improve the fireproof capability of the steel fireproof door.

The utility model is further configured as follows: the outer side of the steel square frame is concavely formed with a sealing groove, and a fireproof expansion sealing strip is fixed in the sealing groove.

By adopting the above-mentioned technical scheme, in normal use, the fireproof expansion sealing strip can improve the sealing performance between the steel frame and the door frame; The gap between the door frame prevents flame or smoke from spreading out from the gap between the steel square frame and the door frame, thereby further improving the fireproof capability of the steel fire door.

The utility model is further set as: the thickness of the heat insulation layer is at least 80mm.

By adopting the above technical solution, the thickness of the heat insulation layer is guaranteed to be not less than 80 mm, so as to avoid insufficient heat insulation and fire resistance of the heat insulation layer due to insufficient thickness.

In summary, the utility model has the following beneficial effects:

1. By setting the fireproof board, heat insulation layer and expansion fireproof sealant on the inner side of the door frame, and cooperating with the fireproof expansion sealing strip in the sealing groove, it not only ensures that the steel fireproof door has a high structural strength, but also greatly improves the steel quality. The impact resistance of high-quality fire-resistant doors is improved, and the heat insulation and fire resistance of the steel fire-resistant doors are greatly improved, so that the safety of steel fire-resistant doors is significantly improved;

2. By setting the door frame in the accommodation cavity and reserving a reserved cavity between the fireproof board and the heat insulation layer to meet the heat deformation requirements of the heat insulation layer, the steel fire door has a high structural strength At the same time, it also helps to prolong the service life of the steel fire door.

Description of drawings

Fig. 1 is a schematic axonometric view mainly used to reflect the overall structure of a steel fire door in this embodiment;

Fig. 2 is a schematic diagram of explosion mainly used to embody the internal structure of steel fire doors in this embodiment;

Fig. 3 is a schematic cross-sectional view mainly used to reflect the internal structure of the steel fire door in this embodiment.

Reference signs: 1. Steel square frame; 101. Sealing groove; 2. Steel panel; 3. Accommodating cavity; 4. Fireproof expansion sealing strip; 5. Door frame; 51. Installation groove; 6. Fireproof board; 7. Heat insulation layer; 8. Expansion fireproof sealant; 9. Reserved cavity; 10. Expansion rubber pad.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model is described in detail.

Referring to accompanying drawings 1-2, a steel fireproof door includes a steel frame 1, the steel frame 1 has a square frame structure as a whole, and steel panels 2 are provided on both sides in the thickness direction of the steel panel 2. The surrounding side forms a fastening fit with the steel frame 1 , and the two are fixedly connected by welding, and an accommodating cavity 3 is formed between the steel frame 1 and the two steel panels 2 .

In conjunction with accompanying drawing 3, the surroundings of the above-mentioned steel frame 1 are concavely formed with a sealing groove 101, and a fireproof expansion sealing strip 4 is glued and fixed in the sealing groove 101; when the door leaf is embedded in the corresponding door frame as a whole, the fireproof expansion sealing Strip 4 can greatly improve the sealing between the door leaf and the door frame; and, when a fire occurs, the fireproof expansion sealing strip 4 will expand when heated and effectively seal the gap between the door leaf and the corresponding door frame, effectively blocking the spread of fire and smoke .

Referring to accompanying drawings 2-3, the accommodating cavity 3 is provided with a door frame 5, which is made of steel or flame-retardant wood; , its surroundings are pressed against the inner walls of the steel frame 1, and the two sides of the door frame 5 in the thickness direction are respectively pressed against the two steel panels 2; the door frame 5 can greatly improve the structural strength of the steel fire door, improve The impact resistance of the steel fire door.

The above-mentioned installation groove 51 is vertically embedded with a fireproof board 6, and two fireproof boards 6 are arranged in parallel at intervals. The two fireproof boards 6 are respectively attached to the inner walls of the two steel panels 2, and are bonded and fixed with the corresponding steel panels 2; The fireproof board 6 is made of glass magnesium board, and its thickness is not less than 25mm. The glass magnesium board has excellent characteristics such as high temperature resistance, flame retardancy, high strength, bending resistance and good toughness. Therefore, the fireproof board 6 made of the glass magnesium board can further improve the overall fire resistance of the door leaf.

At the same time, a heat insulation layer 7 is vertically arranged between the two fireproof boards 6; the heat insulation layer 7 is made of expanded perlite, and its thickness is not less than 80mm; to fix the heat insulation layer 7, the heat insulation layer 7 and the installation groove 51 The expansion fireproof sealant 8 is coated between the inner walls, and the heat insulation layer 7 is bonded and fixed to the inner wall of the installation groove 51 through the expansion fireproof sealant 8 . Expanded perlite products have good heat insulation and fire resistance, so the heat insulation layer 7 made of expanded perlite can greatly improve the overall heat insulation effect of the door leaf.

Considering that the thermal insulation layer 7 made of expanded perlite will expand when heated, a reserved cavity 9 is reserved between the above-mentioned fireproof board 6 and the thermal insulation layer 7, and the reserved cavity 9 can be used for the expansion deformation of the thermal insulation layer 7. Provide enough space to prevent the heat insulation layer 7 from excessively squeezing the fireproof board 6 and affecting the overall service life of the steel fireproof board 6 . And, in order to improve the stability of the heat insulation layer 7, the expansion rubber pads 10 are arranged in the two reserved cavities 9, and the expansion rubber pads 10 have a square frame structure, and their two sides are respectively pressed against the fireproof board 6 and the heat insulation layer. 7.

The working principle of this embodiment is: when a fire occurs, the door frame 5 and the steel panel 2 can ensure that the steel fire door has sufficient impact resistance; Insulation effect, so as to effectively isolate high temperature; moreover, the fireproof expansion sealing strip 4 in the installation groove 51 will expand when heated and effectively seal the gap between the door leaf and the door frame, preventing fire and smoke from spreading through the gap between the two, further improving the steel quality. The fire resistance of fire doors. In this way, it not only ensures that the steel fire door has high structural strength, greatly improves the impact resistance of the steel fire door, but also greatly improves the heat insulation and fire resistance of the steel fire door, making the steel fireproof Door security has been significantly improved.

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this description, those skilled in the art can make modifications to the embodiment without creative contribution according to needs, but as long as it is within the utility model All new claims are protected by patent law.

Claims (8)

1. a kind of fire resistance steel door, the steel panel (2) including two pieces in parallel interval setting, two steel panel (2) weeks Side is fixed with steel box (1), surrounds accommodating cavity (3) between the steel box (1) and two steel panels (2), feature exists In, fitting is fixed with fire-proof plate (6) on the inside of two steel panels (2), be vertically fixed between two fire-proof plates (6) every Thermosphere (7), the thermal insulation layer (7) are made of expanded perlite.

2. a kind of fire resistance steel door according to claim 1, which is characterized in that the fire-proof plate (6) uses glass magnesium board system At, and the thickness of the fire-proof plate (6) is at least 25mm.

3. a kind of fire resistance steel door according to claim 1, which is characterized in that the fire-proof plate (6) is in thermal insulation layer (7) Interval setting, is each formed with reserved chamber (9) between two fire-proof plates (6) and thermal insulation layer (7).

4. a kind of fire resistance steel door according to claim 3, which is characterized in that push against and be provided in the reserved chamber (9) Expanded rubber pad (10), and the expanded rubber pad (10) is in frame type structure.

5. a kind of fire resistance steel door described in any one of -4 according to claim 1, which is characterized in that the steel box (1) Inside be equipped with door leaf skeleton (5), the two sides of door leaf skeleton (5) thickness direction push against two fire-proof plates (6), the door respectively The surrounding of ribs of the fan frame (5) pushes against each inner wall of steel box (1) respectively；Run through to form on the door leaf skeleton (5) and be used for It is embedded the mounting groove (51) of fire-proof plate (6) and thermal insulation layer (7).

6. a kind of fire resistance steel door according to claim 5, which is characterized in that the thermal insulation layer (7) and door leaf skeleton (5) Expansion fireproof sealant (8) are coated between inner wall.

7. a kind of fire resistance steel door described in any one of -4 according to claim 1, which is characterized in that the steel box (1) Outside indent forms seal groove (101), is fixed with fire-proof expansion seal strip (4) in the seal groove (101).

8. a kind of fire resistance steel door according to claim 1, which is characterized in that the thickness of the thermal insulation layer (7) is at least 80mm。