A fireproof and heat-insulating steel fire door

Abstract

The utility model relates to fireproof door technical field discloses a kind of fireproof steel fireproof door, including door frame and door leaf, the door leaf is rotatably connected with fireproof hinge between the door frame;The door leaf top is provided with fireproof lock, the door leaf inside is provided with framework, the framework inside is filled with fireproof door core board, the framework outside is covered with door leaf panel, the edge of the door frame and the door leaf is provided with fireproof expansion seal, the door leaf edge is provided with cover joint board, the door leaf is embedded with composite heat insulation type fireproof glass, the composite heat insulation type fireproof glass is fixed with the door leaf panel by glass pressure strip.The utility model, through steel framework support fireproof door core board and door leaf panel, the expansion characteristic of fireproof expansion seal under high temperature and the coverage of cover joint board to gap, can effectively block the penetration path of flame and flue gas, significantly improve the fire resistance limit and heat insulation performance of door body.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, and in particular to a fire-resistant and heat-insulating steel fire door. Background Technology

[0002] Fire doors effectively prevent the spread of fire during a fire, protecting people and property. By maintaining fire resistance for a certain period, they effectively isolate the fire source, reducing the spread of the fire and providing valuable time for evacuation and rescue.

[0003] Traditional fire doors typically consist of a door leaf, door frame, weatherstripping, and fire-resistant materials. The door leaf is filled with fire-resistant materials that provide insulation and fire protection during a fire. The design of the door frame and weatherstripping ensures a good seal when the door is closed, preventing the penetration of fire and smoke.

[0004] Traditional fire doors generally have limited fire resistance and insulation properties, primarily due to the thermal insulation performance of their fire-resistant materials and the limitations of the door's thickness. While these doors can provide fire protection for a certain period, under high temperatures, the fire-resistant materials cannot maintain effective insulation, leading to increased door temperature and even deformation or failure. This inadequate fire resistance and insulation cause fire doors to lose their protective function under prolonged fire exposure, reducing their fire-resistant performance and consequently affecting the safety of evacuation and fire control during a fire. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a fire-resistant and heat-insulating steel fire door, aiming to improve the problem that the fire resistance and heat insulation of traditional fire doors are relatively poor, which affects the safety of personnel evacuation and the effectiveness of fire control during a fire.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a fire-resistant and heat-insulating steel fire door, comprising a door frame and a door leaf, wherein the door leaf is rotatably connected to the door frame by a fireproof hinge; a fireproof lock is provided at the top of the door leaf; a frame is provided inside the door leaf; a fireproof door core board is filled inside the frame; a door leaf panel is covered on the outside of the frame; a fireproof expansion seal is provided at the contact edge between the door frame and the door leaf; a cover plate is provided at the edge of the door leaf; a composite heat-insulating fireproof glass is embedded in the door leaf; the composite heat-insulating fireproof glass is fixed to the door leaf panel by a glass strip; and a fireproof latch is provided on the side wall of the door leaf.

[0007] As a further description of the above technical solution:

[0008] The fire-resistant expansion seal is continuously distributed along the inner side of the door frame and the edge of the door leaf.

[0009] As a further description of the above technical solution:

[0010] The cover plate is fixedly connected to the edge of the door leaf, and the cover plate fills the gap between the door leaf and the door frame.

[0011] As a further description of the above technical solution:

[0012] The fireproof door core board is filled inside the frame, and the fireproof door core board is attached to the door panel.

[0013] As a further description of the above technical solution:

[0014] The fireproof latch extends vertically and inserts into the corresponding slot in the door frame.

[0015] As a further description of the above technical solution:

[0016] The door frame is made of 1.2mm cold-rolled galvanized steel sheet, and the door panel is made of 0.8mm cold-rolled galvanized steel sheet.

[0017] As a further description of the above technical solution:

[0018] The glass strips are arranged along the edge of the composite heat-insulating fireproof glass, and the glass strips are made of 1.2mm cold-rolled galvanized steel sheet.

[0019] As a further description of the above technical solution:

[0020] The frame is made of U48mm×15mm×1.2mm cold-rolled galvanized steel sheet, and the cover plate is made of 20mm×3mm×1.2mm cold-rolled galvanized steel sheet.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the fireproof door core board and door panel are first supported by a steel frame. Combined with the expansion characteristics of the fireproof expansion seal at high temperature and the coverage of the gap by the cover plate, the penetration path of flames and smoke can be effectively blocked, significantly improving the fire resistance limit and heat insulation performance of the door.

[0023] 2. In this utility model, the fireproof lock and fireproof bolt ensure that the door is closed securely. The composite heat-insulating fireproof glass enhances the heat insulation effect while retaining light transmission, giving the door reliable structural strength. It is suitable for various places that require fire separation, effectively reducing the risk of fire spread and protecting life and property safety. Attached Figure Description

[0024] Figure 1 Elevation view of the unexposed side of a fire-resistant and heat-insulating steel fire door proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the fire-resistant and heat-insulating steel fire door proposed in this utility model.

[0026] Figure 3 This is a side view of a fire-resistant and heat-insulating steel fire door proposed in this utility model.

[0027] Legend:

[0028] 1. Door frame; 2. Door leaf; 3. Fireproof lock; 4. Fireproof hinge; 5. Fireproof expansion seal; 6. Cover plate; 7. Fireproof door core board; 8. Skeleton; 9. Door leaf panel; 10. Fireproof bolt; 11. Composite heat-insulating fireproof glass; 12. Glass glazing bead. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figures 1-3 An embodiment of this utility model provides a fire-resistant and heat-insulating steel fire door, including a door frame 1 and a door leaf 2. The door leaf 2 is rotatably connected to the door frame 1 by a fireproof hinge 4. A fireproof lock 3 is provided on the top of the door leaf 2. A frame 8 is provided inside the door leaf 2. The frame 8 is filled with a fireproof door core board 7. The frame 8 is covered with a door leaf panel 9. A fireproof expansion seal 5 is provided at the edge where the door frame 1 and the door leaf 2 meet. A cover plate 6 is provided at the edge of the door leaf 2. A composite heat-insulating fireproof glass 11 is embedded in the door leaf 2. The composite heat-insulating fireproof glass 11 is fixed to the door leaf panel 9 by a glass pressure strip 12. A fireproof latch 10 is provided on the side wall of the door leaf 2.

[0031] Reference Figures 1-3 Fire-resistant expansion seals 5 are continuously distributed along the inner side of the door frame 1 and the edge of the door leaf 2. Cover plates 6 are fixedly connected to the edge of the door leaf 2 and fill the gap between the door leaf 2 and the door frame 1. Fire-resistant door core panels 7 are filled inside the frame 8 and are attached to the door leaf panel 9. Fire-resistant bolts 10 extend and retract vertically and are inserted into the corresponding slots of the door frame 1. The door frame 1 is made of 1.2mm cold-rolled galvanized steel sheet, the door leaf panel 9 is made of 0.8mm cold-rolled galvanized steel sheet, glass strips 12 are arranged along the edge of the composite heat-insulating fireproof glass 11, glass strips 12 are made of 1.2mm cold-rolled galvanized steel sheet, the frame 8 is made of U48mm×15mm×1.2mm cold-rolled galvanized steel sheet, and cover plates 6 are made of 20mm×3mm×1.2mm cold-rolled galvanized steel sheet.

[0032] Working principle: The fire door is connected to the door frame 1 via the door leaf 2 and fireproof hinges 4. When closed, it is fixed by fireproof locks 3 and fireproof bolts 10 to ensure a tight closure. The fireproof expansion seals 5 on the edges of the door frame 1 and door leaf 2 expand under high temperature, and together with the cover plate 6, they cover the gaps to block the penetration path of flames and smoke. The steel frame 8 supports the internal fireproof door core board 7 and the outer door leaf panel 9. The fireproof door core board 7 provides core heat insulation and fire resistance. The composite heat-insulating fireproof glass 11 on the door leaf 2 is fixed by the glass pressure strip 12, which retains light transmission and enhances the heat insulation effect. Overall, it realizes the function of blocking the spread of flames and delaying heat transfer.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fire-resistant and heat-insulating steel fire door, comprising a door frame (1) and a door leaf (2), characterized in that: The door leaf (2) is rotatably connected to the door frame (1) by a fireproof hinge (4); a fireproof lock (3) is provided on the top of the door leaf (2); a frame (8) is provided inside the door leaf (2); a fireproof door core board (7) is filled inside the frame (8); a door leaf panel (9) is covered on the outside of the frame (8); a fireproof expansion seal (5) is provided at the fitting edge of the door frame (1) and the door leaf (2); a cover plate (6) is provided on the edge of the door leaf (2); a composite heat-insulating fireproof glass (11) is embedded in the door leaf (2); the composite heat-insulating fireproof glass (11) is fixed to the door leaf panel (9) by a glass strip (12); and a fireproof latch (10) is provided on the side wall of the door leaf (2).

2. The fire-resistant and heat-insulating steel fire door according to claim 1, characterized in that: The fireproof expansion seal (5) is continuously distributed along the inner side of the door frame (1) and the edge of the door leaf (2).

3. The fire-resistant and heat-insulating steel fire door according to claim 1, characterized in that: The cover plate (6) is fixedly connected to the edge of the door leaf (2), and the cover plate (6) fills the gap between the door leaf (2) and the door frame (1).

4. A fire-resistant and heat-insulating steel fire door according to claim 1, characterized in that: The fireproof door core board (7) is filled inside the frame (8), and the fireproof door core board (7) is attached to the door panel (9).

5. A fire-resistant and heat-insulating steel fire door according to claim 1, characterized in that: The fireproof latch (10) extends vertically and is inserted into the corresponding slot of the door frame (1).

6. A fire-resistant and heat-insulating steel fire door according to claim 1, characterized in that: The door frame (1) is made of 1.2mm cold-rolled galvanized steel sheet, and the door panel (9) is made of 0.8mm cold-rolled galvanized steel sheet.

7. A fire-resistant and heat-insulating steel fire door according to claim 1, characterized in that: The glass strip (12) is arranged along the edge of the composite heat-insulating fireproof glass (11), and the glass strip (12) is a 1.2mm cold-rolled galvanized steel plate.

8. A fire-resistant and heat-insulating steel fire door according to claim 1, characterized in that: The frame (8) is a U48mm×15mm×1.2mm cold-rolled galvanized steel sheet, and the cover plate (6) is a 20mm×3mm×1.2mm cold-rolled galvanized steel sheet.

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