Fireproof door frame and fireproof door
Through the design of multi-layer fire-proof plate layers and hollow pipe fittings, combined with fire-proof strips and fire-proof smoke insulation strips, the problem of insufficient structural strength and fire-proof heat insulation capacity of the fire-proof door frame is solved, and a high-reliability fire-proof and heat insulation effect is achieved.
Patent Information
- Application Number
- CN202421673417.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-07-15
AI Technical Summary
The existing fire-proof door frame structure is poor, the fire-proof and heat-insulating capabilities are insufficient, and the fire-proof function is greatly weakened after the fire-proof layer is damaged.
It adopts a multi-layer fire-proof plate layer structure, combined with hollow pipe fittings and surface layer design, including fire-proof strips and fire-proof smoke insulation strips, and is reinforced by metal square pipe fittings and stainless steel plates to form a multi-layer protective structure.
It improves the structural strength and fireproof and heat insulation reliability of the fireproof door frame, and enhances the fireproof and smoke insulation performance of the fireproof door.
Smart Images
Figure CN223119814U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire doors, in particular to a fire door frame and a fire door. Background Art
[0002] As one of the measures for building fire separation, fire doors are usually used on firewalls, at the entrances and exits of stairwells or at the openings of pipe shafts, and are required to be able to isolate smoke and fire. Fire doors play an important role in preventing the spread of smoke and fire and reducing losses.
[0003] However, the existing fire door frames have poor strength. Once the fireproof layer is damaged, the fireproof function is greatly weakened, and the fireproof and heat insulation capabilities also need to be improved. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is to provide a fire door frame with good structural strength and high reliability in fireproofing and heat insulation.
[0005] To solve the above technical problem, the utility model provides a fire door frame, which includes a surface layer and a sandwich layer circumferentially covered by the surface layer. The sandwich layer includes a first fireproof board layer, a second fireproof board layer, a third fireproof board layer and a fourth fireproof board layer arranged in sequence. A first hollow pipe fitting is arranged between the first fireproof board layer and the second fireproof board layer, a second hollow pipe fitting is arranged between the second fireproof board layer and the third fireproof board layer, and the fourth fireproof board layer protrudes inward from the frame of the third fireproof board layer.
[0006] As an improvement of the above solution, the surface layer includes fireproof strips, and the fireproof strips are arranged on the inner side of the frame of at least one of the second fireproof board layer and the third fireproof board layer.
[0007] As an improvement of the above solution, the surface layer includes fireproof strips arranged on the inner side of the frame of the second fireproof board layer and fireproof and smoke isolation strips arranged on the inner side of the frame of the third fireproof board layer.
[0008] As an improvement of the above solution, the surface layer further includes a first panel layer, a second panel layer and a back frame reinforcement piece. The first panel layer and the second panel layer are respectively arranged on opposite sides of the back frame reinforcement piece. The first panel layer, the back frame reinforcement piece, the second panel layer, the fireproof and smoke isolation strips and the fireproof strips circumferentially cover the sandwich layer.
[0009] As an improvement of the above solution, the fireproof strips are attached to the first hollow pipe fitting, the second fireproof board layer and the second hollow pipe fitting, the fireproof and smoke isolation strips are attached to the second hollow pipe fitting and the third fireproof board layer, and the fireproof strips are attached to the fireproof and smoke isolation strips.
[0010] As an improvement to the above solution, both the first fireproof board layer and the fourth fireproof board layer are provided with at least two layers.
[0011] As an improvement to the above solution, a fifth fireproof board layer is provided between the first fireproof board layer and the fireproof strip, and the fifth fireproof board layer is disposed between the first panel layer and the first hollow pipe fitting.
[0012] As an improvement to the above solution, both the first hollow pipe fitting and the second hollow pipe fitting are provided with a preset distance from the back frame reinforcement piece.
[0013] As an improvement to the above solution, both the first hollow pipe fitting and the second hollow pipe fitting are metal square pipes.
[0014] In addition, the present invention also provides a fireproof door, which includes the above-mentioned fireproof door frame.
[0015] Implementing the present invention has the following beneficial effects:
[0016] The present invention discloses a fireproof door frame. By providing a surface layer and a sandwich layer circumferentially covered by the surface layer, a first fireproof board layer, a second fireproof board layer, a third fireproof board layer, and a fourth fireproof board layer are provided in the sandwich layer. A first hollow pipe fitting is provided between the first fireproof board layer and the second fireproof board layer, and a second hollow pipe fitting is provided between the second fireproof board layer and the third fireproof board layer. The formed fireproof and heat-insulating door structure has good strength, and the multi-layer protection structure makes the fireproof and heat-insulating reliability high. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a cross-sectional structure schematic diagram of an embodiment of a fireproof door frame of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.
[0019] As shown in Figure 1 , the present invention provides an embodiment of a fireproof door frame, including a surface layer and a sandwich layer circumferentially covered by the surface layer. The sandwich layer includes a first fireproof board layer 11, a second fireproof board layer 12, a third fireproof board layer 13, and a fourth fireproof board layer 14 arranged in sequence. A first hollow pipe fitting 15 is provided between the first fireproof board layer 11 and the second fireproof board layer 12, a second hollow pipe fitting 16 is provided between the second fireproof board layer 12 and the third fireproof board layer 13, and the fourth fireproof board layer 14 protrudes inward from the frame of the third fireproof board layer 13.
[0020] In this embodiment, by providing a surface layer and a sandwich layer circumferentially wrapped by the surface layer, a first fireproof board layer 11, a second fireproof board layer 12, a third fireproof board layer 13, and a fourth fireproof board layer 14 are provided in the sandwich layer. Moreover, a first hollow pipe fitting 15 is provided between the first fireproof board layer 11 and the second fireproof board layer 12, and a second hollow pipe fitting 16 is provided between the second fireproof board layer 12 and the third fireproof board layer 13. The formed fireproof and heat-insulating door structure has good strength, and the multi-layer protection structure makes the fireproof and heat-insulating reliability high.
[0021] Since a fireproof door is installed on the inner side of the frame of the fireproof door frame, the inner side of the frame of the fireproof door frame is more easily affected by the fire source. Therefore, in this embodiment, a fireproof strip 21 is provided on the surface layer, and the fireproof strip 21 is arranged on the inner side of at least one of the second fireproof board layer 12 and the third fireproof board layer 13.
[0022] To improve the fireproof performance and smoke isolation performance of the fireproof door frame on the inner side of the frame, in this embodiment, a fireproof strip 21 is provided on the inner side of the second fireproof board layer 12, and a fireproof and smoke isolation strip 22 is provided on the inner side of the third fireproof board layer 13. Among them, both the fireproof and smoke isolation strip 22 and the fireproof strip 21 are made of flame-retardant materials. Compared with the fireproof strip 21, the fireproof and smoke isolation strip 22 is also provided with an elastic convex structure for fitting with the fireproof door leaf. The elastic convex structure of the fireproof and smoke isolation strip 22 is in contact with and seals the surface of the fireproof door leaf, achieving the effect of fireproof and smoke isolation.
[0023] In addition, the surface layer of this embodiment further includes a first panel layer 23, a second panel layer 24, and a back frame reinforcement piece 25. The first panel layer 23 and the second panel layer 24 are respectively arranged on opposite sides of the back frame reinforcement piece 25, and the first panel layer 23, the back frame reinforcement piece 25, the second panel layer 24, the fireproof and smoke isolation strip 22, and the fireproof strip 21 circumferentially wrap the sandwich layer.
[0024] Among them, the first panel layer 23, the second panel layer 24, and the back frame reinforcement piece 25 are made of metal plates, preferably made of stainless steel plates. The thickness of the back frame reinforcement piece 25 is greater than the thickness of the first panel layer 23 and also greater than the thickness of the second panel layer 24.
[0025] The fireproof strip 21 is in contact with the first hollow pipe fitting 15, the second fireproof board layer 12, and the second hollow pipe fitting 16. The fireproof and smoke isolation strip 22 is in contact with the second hollow pipe fitting 16 and the third fireproof board layer 13, and the fireproof strip 21 is in contact with the fireproof and smoke isolation strip 22.
[0026] To enhance the fireproof effect, both the first fireproof board layer 11 and the fourth fireproof board layer 14 in this embodiment are arranged in at least two layers.
[0027] A fifth fireproof board layer 17 is provided between the first fireproof board layer 11 and the fireproof strip 21. The fifth fireproof board layer 17 is arranged between the first panel layer 23 and the first hollow pipe fitting 15 to prevent the first hollow pipe fitting 15 from overheating.
[0028] Wherein, both the first hollow pipe fitting 15 and the second hollow pipe fitting 16 are provided with a preset distance from the back frame reinforcement piece 25, that is, the first hollow pipe fitting 15 and the second hollow pipe fitting 16 are separated from the back frame reinforcement piece 25 by the second fireproof board layer 12 or other fireproof board layers to prevent the first hollow pipe fitting 15 and the second hollow pipe fitting 16 from overheating.
[0029] In this embodiment, both the first hollow pipe fitting 15 and the second hollow pipe fitting 16 are metal square pipes. On the one hand, the square pipe structure can improve the structural strength of the door body without adding too much weight. On the other hand, it is convenient for the production and assembly of the door body, and at the same time ensures that each fireproof and heat-insulating structure is closely attached, better playing the fireproof and heat-insulating effect.
[0030] In addition, the present utility model also provides a fireproof door, which includes the above-mentioned fireproof door frame.
[0031] The above-disclosed is only a preferred embodiment of the present utility model. Of course, it cannot be used to limit the scope of the rights of the present utility model. Therefore, equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.
Claims
1. A fireproof door frame, characterized in that, It includes a surface layer and an interlayer circumferentially covered by the surface layer. The interlayer includes a first fireproof board layer, a second fireproof board layer, a third fireproof board layer, and a fourth fireproof board layer arranged in sequence. A first hollow pipe fitting is provided between the first fireproof board layer and the second fireproof board layer, a second hollow pipe fitting is provided between the second fireproof board layer and the third fireproof board layer, and the fourth fireproof board layer protrudes inward from the frame of the third fireproof board layer.
2. The fireproof door frame according to claim 1, characterized in that, The surface layer includes fireproof strips, and the fireproof strips are arranged on the inner side of the frame of at least one of the second fireproof board layer and the third fireproof board layer.
3. The fireproof door frame according to claim 1 or 2, characterized in that, The surface layer includes fireproof strips arranged on the inner side of the frame of the second fireproof board layer and fireproof and smoke-proof strips arranged on the inner side of the frame of the third fireproof board layer.
4. The fireproof door frame according to claim 3, characterized in that, The surface layer further includes a first panel layer, a second panel layer, and a back frame reinforcement piece. The first panel layer and the second panel layer are respectively arranged on opposite sides of the back frame reinforcement piece. The first panel layer, the back frame reinforcement piece, the second panel layer, the fireproof and smoke-proof strips, and the fireproof strips circumferentially cover the interlayer.
5. The fireproof door frame according to claim 3, characterized in that, The fireproof strips are in contact with the first hollow pipe fitting, the second fireproof board layer, and the second hollow pipe fitting. The fireproof and smoke-proof strips are in contact with the second hollow pipe fitting and the third fireproof board layer, and the fireproof strips are in contact with the fireproof and smoke-proof strips.
6. The fireproof door frame according to claim 1, wherein, Both the first fireproof board layer and the fourth fireproof board layer are arranged in at least two layers.
7. The fireproof door frame according to claim 4, characterized in that, A fifth fireproof board layer is provided between the first fireproof board layer and the fireproof strips, and the fifth fireproof board layer is arranged between the first panel layer and the first hollow pipe fitting.
8. The fireproof door frame according to claim 4, wherein, Both the first hollow pipe fitting and the second hollow pipe fitting are provided with a preset distance from the back frame reinforcement piece.
9. The fireproof door frame according to claim 1, characterized in that, Both the first hollow pipe fitting and the second hollow pipe fitting are metal square pipes.
10. A fire door, characterized in that, It includes the fireproof door frame according to any one of claims 1 to 9.