An expansion sealing structure for fire doors in high-rise buildings

Abstract

This utility model discloses an expansion sealing structure for fire doors in high-rise buildings, relating to the field of sealing structure technology. It includes a fire door assembly with a door frame assembly on one side. The fire door assembly and the door frame assembly are matched. One side of the fire door assembly is rotatably connected to the door frame assembly via a hinge. The fire door assembly is composed of a fire door body, a first sealing plate assembly, and a second sealing frame plate assembly. The first and second sealing frame plate assemblies form a sealing mechanism that surrounds the outer periphery of the fire door body. Both the first and second sealing frame plate assemblies are made of expanded graphite plates. A sealing insert is fixedly connected to one side of the first sealing plate assembly, and sliding inserts are provided on both sides of the first sealing plate assembly. This design makes the fire door sealing structure easy to install and maintain, providing strong protection for fire safety within buildings and enhancing the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of sealing structure technology, and more specifically, to an expansion sealing structure for fire doors of high-rise buildings. Background Technology

[0002] In high-rise buildings, fire doors are frequently required. Fire doors are a crucial component of fire protection equipment and a vital link in fire prevention. Fire doors should be equipped with fire door closers or automatic closing devices that ensure the normally open fire door closes in the event of a fire. Traditional fire doors have a simple sealing structure and are not airtight. Over time, the gaps between the door leaf and the frame allow smoke and flames to spread into the room during a fire, rendering their fire protection ineffective. High-rise building fire doors require expansion seal structures. These structures can be used to enclose the fire door, forming a sealed zone around it to prevent the fire from spreading outwards and ensure the safety of people and property.

[0003] Based on this, a search on the patent website revealed that Chinese patent application number CN202122689755.5 discloses a fire door sealing structure, including a fire door. A door handle is fixedly installed on the front of the fire door, and a groove is opened on the top of the fire door. A movable shaft is movably installed on the inner wall of the groove. A sealing gasket is fixedly installed on the back of the fire door. By setting a base plate frame, the gap between the bottom of the fire door and the door frame can be sealed, which enhances the sealing effect of the protective door, improves the sealing quality of the sealing structure, and enhances the function of the protective door.

[0004] It can be seen that the above-mentioned patent application has the following shortcomings: the traditional expansion sealing strip is fixed to the fire door by adhesive installation. Adhesive installation of the fireproof expansion sealing strip to the door frame is cumbersome and the adhesive method is not convenient for users to replace and maintain the expansion sealing structure, which reduces the practicality of the device. Utility Model Content

[0005] The purpose of this utility model is to provide an expansion sealing structure for fire doors in high-rise buildings. By using this device, the problem of traditional expansion sealing strips being fixed to fire doors by adhesive installation, which involves sticking the fireproof expansion sealing strip to the door or window frame, is solved. This method is cumbersome and makes it inconvenient for users to replace or maintain the expansion sealing structure, thus reducing the practicality of the device.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows: an expansion sealing structure for fire doors in high-rise buildings, comprising a fire door assembly, a door frame assembly provided on one side of the fire door assembly, the fire door assembly and the door frame assembly being matched with each other, one side of the fire door assembly being rotatably connected to one side of the door frame assembly via a hinge component, the fire door assembly being composed of a fire door body, a first sealing plate assembly, and a second sealing frame plate assembly, the first sealing plate assembly and the second sealing frame plate assembly forming a sealing mechanism that wraps around the outer periphery of the fire door body; both the first sealing plate assembly and the second sealing frame plate assembly are made of expanded graphite plates. The components are as follows: a sealing plate is fixedly connected to one side of the first sealing plate assembly, and sliding plates are provided on both sides of the first sealing plate assembly. A limiting plate is provided at the bottom of the first sealing plate assembly, and two sets of the limiting plates are provided. A cavity is provided on the outer side of the first sealing plate assembly. A limiting groove is provided at the bottom of the second sealing frame plate assembly, and two sets of the limiting groove are provided. A second connecting block is fixedly connected to the top of the second sealing frame plate assembly, and two sets of the second connecting block are provided. A first empty groove is provided on one side of the second connecting block, and a cavity is provided on one side of the first empty groove. The cavity and the first empty groove are interconnected. An insertion groove is provided on one side of the inner wall of the second sealing frame plate assembly.

[0007] Preferably, a pusher plate is slidably connected inside the cavity, and two sets of pusher plates are provided.

[0008] Preferably, the first sealing plate assembly is provided with a fixing mechanism, and the fixing mechanism is provided in two sets; the fixing mechanism includes a first connecting block fixedly connected to one side of the push plate, and the first connecting block is slidably connected inside the first sealing plate assembly.

[0009] Preferably, a retaining block is fixedly connected to the side of the first connecting block away from the push plate, the retaining block is slidably connected to one side of the first sealing plate assembly, and the retaining block matches the push plate.

[0010] Preferably, a spring is fixedly connected between the two sets of push plates, and the sealing insert plate matches the insertion slot.

[0011] Preferably, the sealing insert plate is engaged with the insertion slot, and the limiting plate is matched with the limiting slot.

[0012] Preferably, the sliding plate matches the first empty slot.

[0013] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0014] 1. In this application, the first sealing plate assembly and the second sealing frame plate assembly together constitute an expansion sealing mechanism for a fire door. The first sealing plate assembly and the second sealing frame plate assembly together wrap around the outer periphery of the fire door body to form a sealed fire door assembly, giving the sealed fire door assembly sealing performance. The sealed fire door assembly and the door frame assembly are used in conjunction with each other. When the sealed fire door assembly and the door frame assembly are closed, the outer wall of the sealed fire door assembly and the inner wall of the door frame assembly are tightly fitted together. The first sealing plate assembly and the second sealing frame plate assembly are made of materials with expansion properties, specifically expanded graphite plates. The sealing mechanism made of expanded graphite material can expand rapidly at high temperatures. When a fire occurs, the first sealing plate assembly and the second sealing frame plate assembly automatically expand under high temperatures, sealing the gap between the sealed fire door assembly and the door frame assembly, blocking the air flow between the two spaces, effectively preventing the harm of dense smoke, toxic gases and heat to the human body in the early stage of a fire, filling the door gaps, and preventing the spread of fire and smoke. In addition to its expansion properties, expanded graphite board also has good fire resistance and heat insulation properties. This design involves setting a first sealing plate assembly and a second sealing frame plate assembly around the outer periphery of the fire door body, so that the fire door body is wrapped by the expansion sealing structure, and the gap between the sealing fire door assembly and the door frame assembly is sealed by the sealing structure, preventing the fire from spreading outward and improving the sealing performance of the fire door body.

[0015] 2. When the first sealing plate assembly and the second sealing frame plate assembly need to be assembled to wrap around the outside of the fire door body, place the first sealing plate assembly on one side of the fire door body and the second sealing frame plate assembly on the other side of the fire door body. The first sealing plate assembly and the second sealing frame plate assembly should be close to each other, and the fire door body should be located between the first sealing plate assembly and the second sealing frame plate assembly. First, use your hand to move the two sets of push plates towards each other. At this time, the spring is compressed, and the push plates drive the first connecting blocks and the inserting blocks on each side to retract into the first sealing plate assembly until the two sets of inserting blocks are completely retracted into the inner cavity. Then, the user can align the limiting plate with the track of the limiting groove, and the two sets of sliding plates correspond to the two sets of... The first slot track is aligned with the sealing plate. The user pushes the first sealing plate assembly closer to the second sealing frame plate assembly, so that the limiting plate slides completely into the limiting groove, and the sliding plate slides completely into the first slot. At the same time, the sealing plate is locked and fixed into the slot. At this time, the two sets of fixing blocks correspond to the positions of the two cavities respectively. The user can release the two sets of push plates, and the springs at both ends will push the two sets of push plates to move away from each other. The push plates push the first connecting block and the fixing blocks to move until the fixing blocks are completely inserted into the cavities. At this time, the first sealing plate assembly and the second sealing frame plate assembly are locked and fixed, and the fire door body is wrapped between the first sealing plate assembly and the second sealing frame plate assembly.

[0016] 3. If the user needs to maintain or replace the sealing mechanism, the first sealing plate assembly and the second sealing frame plate assembly need to be disassembled. The two sets of push plates are moved toward each other, so that the two sets of insert blocks are completely retracted into the first sealing plate assembly. Then, the first sealing plate assembly is pulled away from the second sealing frame plate assembly, the sealing insert plate is separated from the insertion slot, the sliding insert plate is separated from the first slot, and the limiting plate is disengaged from the limiting slot. Thus, the disassembly of the first sealing plate assembly and the second sealing frame plate assembly is completed. This setting makes the fire door sealing structure easy to install and maintain, providing strong protection for fire safety in buildings and improving the practicality of the device. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of the present invention;

[0018] Figure 2 This is a structural diagram of the sealed fire door assembly of this utility model;

[0019] Figure 3 This is a structural diagram of the first sealing plate assembly, the second sealing frame plate assembly, and the fire door body of this utility model.

[0020] Figure 4 This is a structural diagram of the first sealing plate assembly and the second sealing frame plate assembly of this utility model;

[0021] Figure 5 This is a structural diagram of the engagement mechanism between the first sealing plate assembly and the second sealing frame plate assembly of this utility model.

[0022] In the figure: 1. First sealing plate assembly; 11. Sealing insert plate; 12. Sliding insert plate; 13. Limiting plate; 14. Cavity groove; 15. Push plate; 16. Insertion block; 18. First connecting block; 19. Spring; 2. Second sealing frame plate assembly; 21. Second connecting block; 22. Insertion slot; 23. Limiting slot; 24. First slot; 25. Cavity; 3. Fire door body; 4. Sealed fire door assembly; 5. Door frame assembly. Detailed Implementation

[0023] 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.

[0024] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0025] Combination Figures 1-5 An expansion sealing structure for fire doors in high-rise buildings includes a fire door assembly 4, a door frame assembly 5 on one side of the fire door assembly 4, and the fire door assembly 4 and the door frame assembly 5 are matched with each other. One side of the fire door assembly 4 is rotatably connected to one side of the door frame assembly 5 via a hinge component. The fire door assembly 4 is composed of a fire door body 3, a first sealing plate assembly 1, and a second sealing frame plate assembly 2. The first sealing plate assembly 1 and the second sealing frame plate assembly 2 form a sealing mechanism that wraps around the outer periphery of the fire door body 3. Both the first sealing plate assembly 1 and the second sealing frame plate assembly 2 are components made of expanded graphite plates. One side of the first sealing plate assembly 1 is fixedly connected to... The first sealing plate assembly 1 has a sealing insert plate 11, and sliding insert plates 12 are provided on both sides of the first sealing plate assembly 1. The bottom of the first sealing plate assembly 1 is provided with a limiting plate 13, and two sets of limiting plates 13 are provided. A cavity 14 is provided on the outer side of the first sealing plate assembly 1. The bottom of the second sealing frame plate assembly 2 is provided with a limiting groove 23, and two sets of limiting grooves 23 are provided. The top of the second sealing frame plate assembly 2 is fixedly connected with a second connecting block 21, and two sets of second connecting blocks 21 are provided. A first empty groove 24 is provided on one side of the second connecting block 21, and a cavity 25 is provided on one side of the first empty groove 24. The cavity 25 and the first empty groove 24 are interconnected. An insertion groove 22 is provided on one side of the inner wall of the second sealing frame plate assembly 2.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] Example:

[0028] Please see Figures 1-5 A push plate 15 is slidably connected inside the cavity 14, and two sets of push plates 15 are provided. A fixing mechanism is provided inside the first sealing plate assembly 1, and two sets of fixing mechanisms are provided. The fixing mechanism includes a first connecting block 18 fixedly connected to one side of the push plate 15. The first connecting block 18 is slidably connected inside the first sealing plate assembly 1. A insertion block 16 is fixedly connected to the side of the first connecting block 18 away from the push plate 15. The insertion block 16 is slidably connected to one side of the first sealing plate assembly 1, and the insertion block 16 and the push plate 15 are matched with each other. A spring 19 is fixedly connected between the two sets of push plates 15. The sealing insert plate 11 is matched with the insertion slot 22. The sealing insert plate 11 and the insertion slot 22 are engaged. The limiting plate 13 is matched with the limiting groove 23. The sliding insert plate 12 is matched with the first empty slot 24.

[0029] In summary, the working principle is as follows: In this application, the first sealing plate assembly 1 and the second sealing frame plate assembly 2 together form an expansion sealing mechanism for fire doors. The first sealing plate assembly 1 and the second sealing frame plate assembly 2 together wrap around the outer periphery of the fire door body 3, forming a sealed fire door assembly 4, which gives the sealed fire door assembly 4 a sealing performance. The sealed fire door assembly 4 is used in conjunction with the door frame assembly 5. When the sealed fire door assembly 4 and the door frame assembly 5 are closed, the outer wall of the sealed fire door assembly 4 and the inner wall of the door frame assembly 5 are tightly fitted together. The first sealing plate assembly 1 and the second sealing frame plate assembly 2 are made of materials with expansion properties, specifically expanded graphite plates. The sealing mechanism made of expanded graphite material can expand rapidly at high temperatures. When a fire occurs, the first sealing plate assembly 1 and the second sealing frame plate assembly 2 automatically expand under high temperatures, sealing the gap between the sealed fire door assembly 4 and the door frame assembly 5, blocking the airflow between the two spaces, effectively preventing the harm of dense smoke, toxic gases and heat to the human body in the early stages of a fire, filling the door gaps, and preventing the spread of fire and smoke. In addition to its expansion properties, expanded graphite board also has good fire resistance and heat insulation properties. This configuration involves setting a first sealing plate assembly 1 and a second sealing frame plate assembly 2 around the outer periphery of the fire door body 3, so that the fire door body 3 is wrapped by the expansion sealing structure, and the gap between the sealing fire door assembly 4 and the door frame assembly 5 is sealed by the sealing structure, preventing the fire from spreading outward and improving the sealing performance of the fire door body 3.

[0030] When the first sealing plate assembly 1 and the second sealing frame plate assembly 2 need to be assembled to wrap around the outside of the fire door body 3, the first sealing plate assembly 1 is placed on one side of the fire door body 3, and the second sealing frame plate assembly 2 is placed on the other side of the fire door body 3. The first sealing plate assembly 1 and the second sealing frame plate assembly 2 are positioned close to each other, and the fire door body 3 is located between the first sealing plate assembly 1 and the second sealing frame plate assembly 2. First, the two sets of push plates 15 are moved towards each other by hand. At this time, the spring 19 is compressed, and the push plates 15 drive the first connecting blocks 18 and the insertion blocks 16 on each side to move towards each other. The first sealing plate assembly 1 retracts internally until both sets of insertion blocks 16 are fully retracted into the inner cavity 1. Then, the user aligns the limiting plate 13 with the track of the limiting groove 23. The two sets of sliding inserts 12 correspond to the tracks of the two sets of first empty grooves 24, and the sealing insert 11 is aligned with the insertion groove 22. The user pushes the first sealing plate assembly 1 closer to the second sealing frame assembly 2, causing the limiting plate 13 to fully slide into the limiting groove 23, and the sliding inserts 12 to fully slide into the first empty groove 24. Simultaneously, the sealing insert 11 engages and is fixed into the insertion groove 22. At this point, the two sets of insertion blocks 16 are respectively aligned with the two sets of cavities. With position 25 corresponding, the user can release the two sets of push plates 15. The springs 19 will push the two sets of push plates 15 away from each other, causing the push plates 15 to move the first connecting block 18 and the insertion block 16 until the insertion block 16 is fully inserted into the cavity 25. At this point, the first sealing plate assembly 1 and the second sealing frame plate assembly 2 are locked together and fixedly installed, and the fire door body 3 is enclosed between the first sealing plate assembly 1 and the second sealing frame plate assembly 2. If the user needs to maintain or replace the sealing mechanism, the first sealing plate assembly 1 and the second sealing frame plate assembly 2 need to be disassembled. The push plate 15 moves towards each other, causing the two sets of insert blocks 16 to fully retract into the first sealing plate assembly 1. Subsequently, the first sealing plate assembly 1 is pulled away from the second sealing frame plate assembly 2, the sealing insert plate 11 separates from the insertion slot 22, the sliding insert plate 12 separates from the first slot 24, and the limiting plate 13 disengages from the limiting slot 23. Thus, the separation of the first sealing plate assembly 1 and the second sealing frame plate assembly 2 is completed. This configuration makes the fire door sealing structure easy to install and maintain, providing strong protection for fire safety in buildings and improving the practicality of the device.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An expansion sealing structure for fire doors in high-rise buildings, comprising a fire door assembly (4), wherein a door frame assembly (5) is provided on one side of the fire door assembly (4), the fire door assembly (4) and the door frame assembly (5) are matched to each other, and one side of the fire door assembly (4) is rotatably connected to one side of the door frame assembly (5) via a hinge component, characterized in that: The sealed fire door assembly (4) is composed of a fire door body (3), a first sealing plate assembly (1), and a second sealing frame plate assembly (2). The first sealing plate assembly (1) and the second sealing frame plate assembly (2) form a sealing mechanism that wraps around the outer periphery of the fire door body (3). The first sealing plate assembly (1) and the second sealing frame plate assembly (2) are both made of expanded graphite plates. A sealing insert plate (11) is fixedly connected to one side of the first sealing plate assembly (1), and sliding insert plates (12) are provided on both sides of the first sealing plate assembly (1). A limiting plate (13) is provided at the bottom of the first sealing plate assembly (1), and the limiting plate... (13) Two sets are provided. The outer side of the first sealing plate assembly (1) is provided with a cavity groove (14). The bottom of the second sealing frame assembly (2) is provided with a limiting groove (23), and the limiting groove (23) is provided in two sets. The top of the second sealing frame assembly (2) is fixedly connected with a second connecting block (21), and the second connecting block (21) is provided in two sets. A first empty groove (24) is provided on one side of the second connecting block (21), and a cavity (25) is provided on one side of the first empty groove (24). The cavity (25) communicates with the first empty groove (24). An insertion groove (22) is provided on one side of the inner wall of the second sealing frame assembly (2).

2. The expansion sealing structure for fire doors in high-rise buildings according to claim 1, characterized in that: The cavity (14) is slidably connected to a push plate (15), and there are two sets of push plates (15).

3. The expansion sealing structure for fire doors in high-rise buildings according to claim 2, characterized in that: The first sealing plate assembly (1) is provided with a fixing mechanism, and the fixing mechanism is provided in two sets; the fixing mechanism includes a first connecting block (18) fixedly connected to one side of the push plate (15), and the first connecting block (18) is slidably connected to the inside of the first sealing plate assembly (1).

4. The expansion sealing structure for fire doors in high-rise buildings according to claim 3, characterized in that: A retaining block (16) is fixedly connected to the side of the first connecting block (18) away from the push plate (15). The retaining block (16) is slidably connected to one side of the first sealing plate assembly (1), and the retaining block (16) matches the push plate (15).

5. The expansion sealing structure for fire doors in high-rise buildings according to claim 4, characterized in that: A spring (19) is fixedly connected between the two sets of push plates (15), and the sealing insert plate (11) matches the insertion slot (22).

6. The expansion sealing structure for fire doors in high-rise buildings according to claim 5, characterized in that: The sealing insert (11) engages with the insertion slot (22), and the limiting plate (13) matches the limiting slot (23).

7. The expansion sealing structure for fire doors in high-rise buildings according to claim 6, characterized in that: The sliding plate (12) is matched with the first empty slot (24).

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