Adjustable sealing fireproof door frame structure
By introducing a fire door panel structure consisting of a steel plate outer frame, flame-retardant filler, and coating layer into the fire door frame, combined with an adjustable door closer, the problem of poor flame-retardant performance of the fire door frame is solved, achieving higher fire resistance and service life, and providing escape time and safety assurance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUHAI KAIGU BUILDING MATERIALS TECHNOLOGY CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-16
Smart Images

Figure CN224363846U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of adjustable sealing fire door frames, specifically to an adjustable sealing fire door frame structure. Background Technology
[0002] Currently, fire doors have fire-resistant expansion sealing strips affixed to the sides of the door leaf. When exposed to high temperatures or open flames, the expansion sealing strips expand and seal the gap between the door leaf and the door frame, thus providing heat insulation and blocking smoke.
[0003] The existing adjustable sealing fire door frame structure has poor flame retardant performance. Long-term use will cause damage to the fire door and frame. In the event of a fire, it cannot block the flames, which will cause great safety hazards and shorten the service life of the fire door and frame.
[0004] Therefore, it is necessary to provide an adjustable sealing fire door frame structure to solve the above-mentioned technical problems. The information disclosed in this background section is only intended to enhance the understanding of the overall background of this utility model, and is not necessarily to be regarded as an admission or to imply in any way that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0005] Therefore, this utility model provides an adjustable sealing fire door frame structure to solve the problems of poor flame retardant performance of adjustable sealing fire door frame structures, which will cause damage to the fire door and frame after long-term use, cannot block flames in the event of a fire, pose a great safety hazard, and shorten the service life of the fire door and frame.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable sealing fireproof door frame structure, including a door frame, wherein a fireproof door panel is movably connected from top to bottom on the right side of the inner cavity of the door frame via stainless steel hinges, the door frame and the fireproof door panel are made of the same material, and an adjustable door closer is provided on the top right side of the front of the fireproof door panel and the top right side of the front of the door frame, the fireproof door panel includes a steel plate outer frame, a fireproof plate is provided in the inner cavity of the steel plate outer frame, a flame-retardant filler is provided on the inner surface of the fireproof plate, a flame-retardant coating layer is provided on the outer surface of the steel plate outer frame, the flame-retardant filler includes perlite board, a flame-retardant fireproof cotton is provided on the outer surface of the perlite board, the flame-retardant coating layer includes a galvanized layer, an anti-rust primer layer is provided on the outer surface of the galvanized layer, and a flame-retardant topcoat coating layer is provided on the outer surface of the anti-rust primer layer.
[0007] Preferably, a viewing window is provided on the left side of the front of the fireproof door panel, and the viewing window is a fireproof tempered glass panel.
[0008] Preferably, a fire door lock handle is provided on the left side of the front and the left side of the back of the fire door panel.
[0009] Preferably, a fireproof sealing strip is adhered to the inner cavity of the door frame, and the inner surface of the fireproof sealing strip is in contact with the outer surface of the fireproof door panel, and the fireproof sealing strip is made of flame-retardant PVC material.
[0010] Preferably, the outer surface of the perlite board is bonded to the inner surface of the flame-retardant and fireproof cotton.
[0011] Preferably, the outer surface of the galvanized layer is coated and adhered to the inner surface of the anti-rust primer layer, and the outer surface of the anti-rust primer layer is coated and adhered to the inner surface of the flame-retardant topcoat layer.
[0012] The beneficial effects of this utility model are:
[0013] 1. This utility model utilizes flame-retardant fillers with excellent fire-resistant properties, effectively isolating the fire source during a fire and providing more escape time for people. It also possesses excellent heat insulation, flame retardant, and sound absorption properties, increasing the fire resistance time of fireproof door panels and frames and preventing the spread of fire. Through the application of a flame-retardant coating layer, its main function is to isolate the steel plate frame from direct contact with humid environments or corrosive substances. By forming a protective film, it prevents moisture, oxygen, and other corrosive elements from penetrating to the surface of the steel plate frame, thereby improving the material's fire resistance, slowing the spread of flames, or preventing combustion for a certain period of time.
[0014] 2. This utility model increases the strength of the door frame and fireproof door panel by setting the outer steel plate frame. It has high strength and fire resistance, and can effectively resist the attack of high temperature and flame. It ensures the integrity and stability of the door frame and fireproof door panel under fire conditions, and can maintain stability and fire resistance for a longer period of time, thus providing more protection for personnel evacuation and fire rescue. Attached Figure Description
[0015] Figure 1 A schematic diagram of the overall structure of this utility model;
[0016] Figure 2 A schematic diagram of the back of the door frame and fireproof door panel structure provided by this utility model;
[0017] Figure 3 This is a partial structural cross-sectional view of the fireproof door panel provided by this utility model;
[0018] Figure 4 This is a cross-sectional view of the flame-retardant filler structure provided by this utility model;
[0019] Figure 5 This is a cross-sectional view of the flame-retardant coating layer structure provided by this utility model.
[0020] In the diagram: 1. Door frame; 2. Fireproof door panel; 3. Adjustable door closer; 4. Steel plate outer frame; 5. Fireproof board; 6. Flame-retardant filler; 61. Perlite board; 62. Flame-retardant fireproof cotton; 7. Flame-retardant coating layer; 71. Galvanized layer; 72. Anti-rust primer layer; 73. Flame-retardant topcoat coating; 8. Fireproof door lock handle. Detailed Implementation
[0021] 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.
[0022] Example 1, refer to Appendix Figure 1-5 This utility model provides an adjustable sealing fireproof door frame structure, including a door frame 1. A fireproof door panel 2 is movably connected from top to bottom on the right side of the inner cavity of the door frame 1 via stainless steel hinges. The door frame 1 and the fireproof door panel 2 are made of the same material. An adjustable door closer 3 is provided on the top right side of the front of the fireproof door panel 2 and the top right side of the front of the door frame 1. The fireproof door panel 2 includes a steel plate outer frame 4. A fireproof plate 5 is provided in the inner cavity of the steel plate outer frame 4. A flame-retardant filler 6 is provided on the inner surface of the fireproof plate 5. A flame-retardant coating layer 7 is provided on the outer surface of the steel plate outer frame 4. The flame-retardant filler 6 includes a perlite board 61. A flame-retardant fireproof cotton 62 is provided on the outer surface of the perlite board 61. The flame-retardant coating layer 7 includes a galvanized layer 71. A rust-proof primer layer 72 is provided on the outer surface of the galvanized layer 71. A flame-retardant topcoat layer 73 is provided on the outer surface of the rust-proof primer layer 72.
[0023] The usage process of this utility model is as follows: When using this utility model, the adjustable door closer 3 controls the closing speed and force of the fireproof door panel 2 through an internal hydraulic or mechanical system. The adjustable door closer 3 includes a cylinder and piston containing liquid. These components work together to achieve a smooth closing effect. When the fireproof door panel 2 is opened, the liquid inside the adjustable door closer 3 flows at a certain speed, thereby providing appropriate closing force. This prevents the fireproof door panel 2 from colliding or being damaged by the door frame 1 due to closing too quickly, thus protecting the door frame 1 and the fireproof door panel 2. It also facilitates the adjustment of the fireproof door panel 2. The perlite board 61 has good fire resistance and can effectively isolate the fire source in the event of a fire, giving people more time to escape.
[0024] Example 2: The adjustable sealing fire door frame structure provided by this utility model differs from Example 1 in that:
[0025] Refer to the instruction manual appendix Figure 1-5 In this embodiment, an adjustable sealing fireproof door frame structure is provided. A viewing window is provided on the left side of the front of the fireproof door panel 2, and the viewing window is a fireproof tempered glass plate. Fireproof door lock handles 8 are provided on the left side of the front and the left side of the back of the fireproof door panel 2. A fireproof sealing strip is adhered to the inner cavity of the door frame 1, and the inner surface of the fireproof sealing strip is in contact with the outer surface of the fireproof door panel 2. The fireproof sealing strip is made of flame-retardant PVC material. The outer surface of the perlite board 61 is adhered to the inner surface of the flame-retardant fireproof cotton 62. The outer surface of the galvanized layer 71 is coated and adhered to the inner surface of the anti-rust primer layer 72. The outer surface of the anti-rust primer layer 72 is coated and adhered to the inner surface of the flame-retardant topcoat coating 73.
[0026] The specific implementation scenario is as follows: When using this utility model, the adjustable door closer 3 controls the closing speed and force of the fireproof door panel 2 through an internal hydraulic or mechanical system. The adjustable door closer 3 includes a cylinder and piston containing liquid. These components work together to achieve a smooth closing effect. When the fireproof door panel 2 is opened, the liquid inside the adjustable door closer 3 flows at a certain speed, thereby providing appropriate closing force. This prevents the fireproof door panel 2 from colliding or being damaged by the door frame 1 due to closing too quickly, thus protecting both the door frame 1 and the fireproof door panel 2. It also facilitates the adjustment of the fireproof door panel 2. The perlite board 61 has good fire resistance and can effectively isolate the fire source in the event of a fire, giving people more time to escape. The flame-retardant fireproof cotton 62 is a highly efficient fireproof material with excellent heat insulation, flame retardancy, and... The sound absorption performance can increase the fire resistance time of the fireproof door panel 2 and the door frame 1, and prevent the spread of fire. By filling the interior of the fireproof door panel 2 and the door frame 1, heat and flames can be effectively isolated, protecting the fireproof door panel 2 and the door frame 1 from high temperature damage, thereby extending the fire resistance time of the fireproof door panel 2 and the door frame 1. The galvanized layer 71 and the anti-rust primer layer 72 are mainly used to isolate the steel plate outer frame 4 from direct contact with humid environments or corrosive substances. It forms a protective film to prevent moisture, oxygen and other corrosive elements from penetrating to the surface of the steel plate outer frame 4, which plays a good role in preventing rust and corrosion. The flame-retardant topcoat coating 73 is applied to the surface of the material to improve the fire resistance of the material, slow down the spread of flames, or prevent combustion for a certain period of time, thus increasing the flame-retardant effect of the door frame 1 and the fireproof door panel 2.
[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An adjustable sealing fire door frame structure comprising a door frame (1), characterized in that: Fireproof door panels (2) are movably connected from top to bottom on the right side of the inner cavity of the door frame (1) via stainless steel hinges. The door frame (1) and the fireproof door panels (2) are made of the same material. Adjustable door closers (3) are provided on the top right side of the front of the fireproof door panel (2) and the top right side of the front of the door frame (1). The fireproof door panel (2) includes a steel plate outer frame (4). A fireproof plate (5) is provided in the inner cavity of the steel plate outer frame (4). The inner surface of the fireproof plate (5) is provided with... The steel plate outer frame (4) has a flame-retardant filler (6) and a flame-retardant coating layer (7) on its outer surface. The flame-retardant filler (6) includes a perlite board (61) and a flame-retardant fireproof cotton (62) on its outer surface. The flame-retardant coating layer (7) includes a galvanized layer (71) and a rust-proof primer layer (72) on its outer surface. The rust-proof primer layer (72) has a flame-retardant topcoat coating layer (73) on its outer surface.
2. The adjustable sealing fire door frame structure according to claim 1, wherein: The fireproof door panel (2) has a viewing window on the left side of its front, and the viewing window is a fireproof tempered glass panel.
3. The adjustable sealing fire door frame structure of claim 1, wherein: Fire door lock handles (8) are provided on the left side of the front and the left side of the back of the fire door panel (2).
4. The adjustable sealing fire door frame structure of claim 1, wherein: The inner cavity of the door frame (1) is bonded with a fireproof sealing strip, and the inner surface of the fireproof sealing strip is in contact with the outer surface of the fireproof door panel (2), and the fireproof sealing strip is made of flame-retardant PVC material.
5. The adjustable sealing fire door frame structure of claim 1, wherein: The outer surface of the perlite board (61) is bonded to the inner surface of the flame-retardant and fireproof cotton (62).
6. The adjustable sealing fire door frame structure of claim 1, wherein: The outer surface of the galvanized layer (71) is coated and adhered to the inner surface of the anti-rust primer layer (72), and the outer surface of the anti-rust primer layer (72) is coated and adhered to the inner surface of the flame-retardant topcoat layer (73).