Steel-wood double-opening fireproof door

Abstract

The utility model provides a steel-wood double-opening fireproof door which comprises a fireproof door frame and a fireproof door leaf, and the fireproof door leaf is rotationally connected with the fireproof door frame through fireproof hinges. The fireproof door leaf comprises a first door leaf opened towards a fire receiving surface and a second door leaf opened towards a fire back surface, a first limiting piece is arranged at the joint of the first door leaf and the second door leaf, a second limiting piece is arranged at the joint of the second door leaf and the first door leaf, the first limiting piece and the second limiting piece are both Z-shaped limiting pieces, and each Z-shaped limiting piece comprises a long edge and a short edge; when the first door leaf and the second door leaf are closed, the long edge of the first limiting piece and the short edge of the second limiting piece are both arranged on the fire receiving face, and the long edge of the first limiting piece limits the short edge of the second limiting piece. The long edge of the second limiting piece and the short edge of the first limiting piece are both arranged on the unexposed face, and the long edge of the second limiting piece limits the short edge of the first limiting piece. The two limiting pieces limit the positions of the two door leaves, so that the closing tightness of the two door leaves is improved, and toxic gas cannot overflow through the door crack.

Description

Technical Field

[0001] The present application relates to the technical field of fireproof doors, in particular to a steel-wood double-opening fireproof door. Background Art

[0002] Fire doors are doors that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. They can effectively prevent the spread of fire and smoke within a certain period of time, ensure the rapid evacuation of personnel, and thus ensure the safety of personnel. They are generally located between fire compartments, evacuation stairwells, vertical shafts and other places. There are many types of fire doors, such as wooden insulated fire doors, steel insulated fire doors, steel-wood insulated fire doors, and other fire doors.

[0003] The two leaves of the existing double-opening fire door are not closed tightly, and thick smoke and other toxic gases spread into the door through the gap, causing harm to people in the safe area and increasing hidden dangers. Utility Model Content

[0004] In view of the above problems, the present application is proposed to provide a steel-wood double-opening fireproof door that overcomes the above problems or at least partially solves the above problems, comprising:

[0005] A steel-wood double-opening fireproof door, comprising a fireproof door frame and a fireproof door leaf, wherein the fireproof door leaf is rotatably connected to the fireproof door frame via a fireproof hinge;

[0006] The fireproof door leaf comprises a first door leaf opened toward the fire-exposed surface and a second door leaf opened toward the non-fire-exposed surface, a first stopper is provided at the connection between the first door leaf and the second door leaf, a second stopper is provided at the connection between the second door leaf and the first door leaf, the first stopper and the second stopper are both "Z"-shaped stoppers, and the "Z"-shaped stopper comprises a long side and a short side;

[0007] When the first door leaf and the second door leaf are closed, the long side of the first limit member and the short side of the second limit member are both arranged on the fire-exposed surface, and the long side of the first limit member limits the short side of the second limit member; the long side of the second limit member and the short side of the first limit member are both arranged on the fire-proof surface, and the long side of the second limit member limits the short side of the first limit member.

[0008] Preferably, a side of the long side of the first stopper facing the fire door leaf and a side of the long side of the second stopper facing the fire door leaf are both provided with fireproof expansion seals.

[0009] Preferably, the "Z"-shaped limiter also includes a vertical side, and the vertical side of the first limiter and the vertical side of the second limiter are both provided with the fireproof expansion seal.

[0010] Preferably, a decorative line is provided on a side of the long side of the first limiting member and a side of the long side of the second limiting member away from the fireproof door leaf.

[0011] Preferably, a fireproof latch is provided at a top end of the first door leaf and / or the second door leaf away from the fireproof hinge.

[0012] Preferably, the first limiting member and the second limiting member are both made of cold-rolled galvanized steel plates.

[0013] Preferably, the fireproof door leaf includes an inner frame, a magnesia perlite fireproof door core board, a fireproof board, an inner lining steel plate, and a door leaf panel. The inner frame is arranged in the magnesia perlite fireproof door core board, the fireproof board is arranged on two opposite sides of the magnesia perlite fireproof door core board, the inner lining steel plate is arranged on the surrounding side of the fireproof board, and the door leaf panel is arranged on the surface of the inner lining steel plate corresponding to the fireproof board.

[0014] Preferably, an exoskeleton is provided on the outside of the fireproof door leaf, and a fireproof expansion seal is provided between the exoskeleton and a position of the fireproof door frame located outside the door.

[0015] Preferably, an anti-theft structure is provided between the outer frame and the fireproof door frame.

[0016] Preferably, a fireproof lock is provided on a side of the fireproof door leaf away from the fireproof hinge, the fireproof lock comprises a keyhole and a handle, and the handle is provided with a fireproof coating.

[0017] This application has the following advantages:

[0018] In the embodiments of the present application, with respect to the problem of loose closure between the two door leaves of a double-opening fire door in the prior art, the present application provides a solution of a "Z"-shaped limiter, specifically: comprising a fire door frame and a fire door leaf, wherein the fire door leaf is rotatably connected to the fire door frame via a fire hinge; the fire door leaf comprises a first door leaf opened toward a fire-exposed surface and a second door leaf opened toward a non-fire-exposed surface, a first limiter is provided at a connection between the first door leaf and the second door leaf, and a second limiter is provided at a connection between the second door leaf and the first door leaf Two limiters, the first limiter and the second limiter are both "Z"-shaped limiters, and the "Z"-shaped limiter includes a long side and a short side; when the first door leaf and the second door leaf are closed, the long side of the first limiter and the short side of the second limiter are both arranged on the fire-receiving surface, and the long side of the first limiter limits the short side of the second limiter; the long side of the second limiter and the short side of the first limiter are both arranged on the fire-proof surface, and the long side of the second limiter limits the short side of the first limiter. Through the arrangement of the first limiter and the second limiter, the positions of the two door leaves are limited, the closing tightness of the two door leaves is improved, and toxic gases such as thick smoke cannot spread out through the door gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 This is a structural schematic diagram of a steel-wood double-opening fireproof door provided in one embodiment of the present application;

[0021] Figure 2 This is a schematic AA cross-sectional view of a steel-wood double-opening fireproof door provided in one embodiment of the present application;

[0022] Figure 3 This is a BB cross-sectional schematic diagram of a steel-wood double-opening fireproof door provided in one embodiment of the present application;

[0023] Figure 4 This is provided by an embodiment of the present application Figure 3 A partial enlarged schematic diagram of

[0024] Figure 5 It is a CC cross-sectional schematic diagram of a steel-wood double-opening fire door provided in one embodiment of the present application.

[0025] The reference numerals in the drawings of the specification are as follows:

[0026] 1. Fireproof door frame; 2. Fireproof door leaf; 3. Fireproof hinge; 4. Fireproof lock; 5. Door leaf panel; 6. Inner frame; 7. Magnesium perlite fireproof door core board; 8. Fireproof board; 9. Fireproof expansion seal; 10. Anti-theft structure; 11. Fireproof latch; 12. Decorative line; 21. First door leaf; 211. First limiter; 22. Second door leaf; 221. Second limiter. DETAILED DESCRIPTION

[0027] In order to make the objects, features and advantages of the present application more obvious and understandable, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0028] By analyzing the prior art, the inventors found that when the two door leaves of a double-opening fire door are not on the same plane, or the two door leaves cross when closing, that is, when part of one door leaf overlaps the other door leaf, the two door leaves will not be able to fit completely together, posing a safety hazard.

[0029] Reference Figure 1-Figure 5 , shows a steel-wood double-opening fireproof door provided in an embodiment of the present application, comprising a fireproof door frame 1 and a fireproof door leaf 2, wherein the fireproof door leaf 2 is rotatably connected to the fireproof door frame 1 via a fireproof hinge 3;

[0030] The fireproof door leaf 2 comprises a first door leaf 21 opened toward the fire-exposed surface and a second door leaf 22 opened toward the non-fire-exposed surface, a first stopper 211 is provided at the connection between the first door leaf 21 and the second door leaf 22, a second stopper 221 is provided at the connection between the second door leaf 22 and the first door leaf 21, the first stopper 211 and the second stopper 221 are both "Z"-shaped stoppers, and the "Z"-shaped stopper comprises a long side and a short side;

[0031] When the first door leaf 21 and the second door leaf 22 are closed, the long side of the first limiting member 211 and the short side of the second limiting member 221 are both arranged on the fire-exposed surface, and the long side of the first limiting member 211 limits the short side of the second limiting member 221; the long side of the second limiting member 221 and the short side of the first limiting member 211 are both arranged on the fire-proof surface, and the long side of the second limiting member 221 limits the short side of the first limiting member 211.

[0032] In the embodiment of the present application, with respect to the problem of the two door leaves of the double-opening fire door not being closed tightly in the prior art, the present application provides a solution of a "Z"-shaped limiter, specifically: comprising a fire door frame 1 and a fire door leaf 2, wherein the fire door leaf 2 is rotatably connected to the fire door frame 1 via a fire hinge 3; the fire door leaf 2 comprises a first door leaf 21 opened toward the fire-receiving side and a second door leaf 22 opened toward the non-fire side, a first limiter 211 is provided at the connection between the first door leaf 21 and the second door leaf 22, and a second limiter 221 is provided at the connection between the second door leaf 22 and the first door leaf 21. The first stopper 211 and the second stopper 221 are both "Z"-shaped stoppers, and the "Z"-shaped stopper includes a long side and a short side. When the first door leaf 21 and the second door leaf 22 are closed, the long side of the first stopper 211 and the short side of the second stopper 221 are both arranged on the fire-receiving surface, and the long side of the first stopper 211 limits the short side of the second stopper 221. The long side of the second stopper 221 and the short side of the first stopper 211 are both arranged on the non-fire surface, and the long side of the second stopper 221 limits the short side of the first stopper 211. By setting the first stopper 211 and the second stopper 221, the positions of the two door leaves are limited, the closing tightness of the two door leaves is improved, and toxic gases such as thick smoke cannot spread out through the door gap.

[0033] Below, a steel-wood double-opening fireproof door in each exemplary embodiment of the present application will be further described.

[0034] It should be noted that a steel-wood double-opening fire door has the following specific structure: the inner side of the fire door frame 1 is connected to the fire door leaf 2 via a fire hinge 3. Specifically, the inner side of the fire door frame 1 is movably connected to the fire door leaf 2 via a hinge. A hinge is also called a hinge, which is a mechanical device used to connect objects and make them rotate relative to each other. One side of the fire door frame 1 is connected to one side of the fire door leaf 2 via a hinge, so that the fire door leaf 2 rotates along one side of the fire door frame 1.

[0035] Reference Figure 3 and Figure 4 When the first door leaf 21 and the second door leaf 22 are closed by the fireproof hinge 3, the long side of the first stopper 211 is outside the short side of the second stopper 221, that is, the two sides of the short side of the second stopper 221 are in contact with the long side of the first stopper 211 and the second door leaf 22, one side of the long side of the first stopper 211 is in contact with the short side of the second stopper 221, and the other side faces the fire-receiving surface. At the same time, the long side of the second stopper 221 is outside the short side of the first stopper 211, that is, the two sides of the short side of the first stopper 211 are in contact with the long side of the second stopper 221 and the first door leaf 21, one side of the long side of the second stopper 221 is in contact with the short side of the first stopper 211, and the other side faces the fire-proof surface.

[0036] In a specific implementation, three fireproof hinges 3 are provided, two fireproof hinges 3 are provided at intervals between the upper portion of the fireproof door leaf 2 and the fireproof door frame 1, and one fireproof hinge 3 is provided between the lower portion of the fireproof door leaf 2 and the fireproof door frame 1.

[0037] In a specific implementation, the fireproof door frame 1 has a height of 2700 mm and a width of 1500 mm. The fireproof door leaf 2 has a height of 2620 mm and a width of 1394 mm.

[0038] In this embodiment, a fireproof expansion seal 9 is provided on the side of the long side of the first stopper 211 facing the fireproof door leaf 2 and the side of the long side of the second stopper 221 facing the fireproof door leaf 2. When a fire occurs, the fireproof expansion seal 9 expands due to heat, and the gas generated by the fire is isolated at the closed part of the two fireproof door leaves 2, preventing toxic gas from entering the room.

[0039] In this embodiment, refer to Figure 4 The "Z"-shaped stopper also includes a vertical side, and the vertical side of the first stopper 211 and the vertical side of the second stopper 221 are both provided with the fireproof expansion seal 9. Fireproof expansion seals 9 are further provided on the vertical sides of the stopper to improve the sealing performance of the two door leaves.

[0040] In this embodiment, a decorative line 12 is provided on the side of the long side of the first stopper 211 and the long side of the second stopper 221 away from the fire door leaf 2. The decorative line 12 makes the fire door have a beautiful shape.

[0041] In this embodiment, a fireproof latch 11 is provided at the top of the first door leaf 21 and / or the second door leaf 22 away from the fireproof hinge 3. The fireproof latch 11 can keep one of the door leaves normally closed, and the other door leaf can be used for entry and exit, so that the two door leaves do not need to be opened or closed at the same time when entering and exiting, which is more convenient.

[0042] In this embodiment, the first limiting member 211 and the second limiting member 221 are both made of cold-rolled galvanized steel plates.

[0043] In this embodiment, refer to Figure 5 The fireproof door leaf 2 includes an inner frame 6, a magnesia perlite fireproof door core board 7, a fireproof board 8, an inner lining steel plate, and a door leaf panel 5. The inner frame 6 is arranged in the magnesia perlite fireproof door core board 7, the fireproof board 8 is arranged on the opposite sides of the magnesia perlite fireproof door core board 7, the inner lining steel plate is arranged on the surrounding side of the fireproof board 8, and the door leaf panel 5 is arranged on the surface of the inner lining steel plate corresponding to the fireproof board 8.

[0044] It should be noted that the magnesite perlite fireproof door core board 7 is a fireproof door core board composed of magnesium oxide, magnesium chloride, magnesium sulfate, perlite, and a foaming agent. Magnesium oxide, magnesium sulfate, and magnesium chloride have good flame retardant effects, giving the fireproof door core board excellent fireproof performance and stability. In addition, the magnesite perlite fireproof door core board 7 has a lower bulk density and bulk density, and flame-retardant wood is used on its peripheral side, which can reduce the use of the fireproof board 8 and reduce the deadweight of the fireproof door leaf 2. At the same time, the magnesite perlite fireproof door core board 7 has high compressive strength and flexural strength, so that the fireproof door core board can meet the fireproof performance while also having good structural strength.

[0045] In a specific implementation, the inner lining steel plate is made of a 1.0 mm cold-rolled galvanized steel plate, the door panel 5 is made of a 5 mm flame-retardant density board, and the inner frame 6 is made of a 1.5 mm cold-rolled galvanized steel plate.

[0046] In this embodiment, an exoskeleton is provided outside the fireproof door leaf 2, and a fireproof expansion seal 9 is provided between the exoskeleton and the position of the fireproof door frame 1 located outside the door.

[0047] As an example, the fireproof expansion seal 9 surrounds the inner side of the fireproof door frame 1. When a fire occurs, the fireproof expansion seal 9 expands due to heat, and the gas generated by the fire is isolated at the gap between the fireproof door frame 1 and the fireproof door leaf 2, preventing toxic gas from entering the room.

[0048] In a specific implementation, the inner frame 6 is 38 mm long and 20 mm high; the outer frame is 48 mm long and 20 mm high.

[0049] In this embodiment, an anti-theft structure 10 is provided between the outer frame and the fireproof door frame 1. The anti-theft structure 10 is an anti-pry pin, and the addition of the anti-theft structure 10 enhances the anti-impact and anti-theft capabilities of the door.

[0050] In this embodiment, a fireproof lock 4 is provided on the side of the fireproof door leaf 2 away from the fireproof hinge 3, and the fireproof lock 4 includes a keyhole and a handle, and the handle is provided with a fireproof coating. Providing a fireproof coating on the handle can prevent the handle from being heated or burned by fire, and can open the fireproof door in time when a fire occurs, which can facilitate the timely evacuation of personnel and optimize the function of the fireproof door.

[0051] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0052] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0053] The above is a detailed introduction to a steel-wood double-opening fire door provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A steel-wood double-opening fire door, characterized in that: It comprises a fireproof door frame and a fireproof door leaf, wherein the fireproof door leaf is rotatably connected to the fireproof door frame via a fireproof hinge; The fireproof door leaf comprises a first door leaf opened toward the fire-exposed surface and a second door leaf opened toward the non-fire-exposed surface, a first stopper is provided at the connection between the first door leaf and the second door leaf, a second stopper is provided at the connection between the second door leaf and the first door leaf, the first stopper and the second stopper are both "Z"-shaped stoppers, and the "Z"-shaped stopper comprises a long side and a short side; When the first door leaf and the second door leaf are closed, the long side of the first limit member and the short side of the second limit member are both arranged on the fire-exposed surface, and the long side of the first limit member limits the short side of the second limit member; the long side of the second limit member and the short side of the first limit member are both arranged on the fire-proof surface, and the long side of the second limit member limits the short side of the first limit member.

2. The steel-wood double-opening fireproof door according to claim 1 is characterized in that: A fireproof expansion seal is provided on the side of the long side of the first limit member facing the fireproof door leaf and on the side of the long side of the second limit member facing the fireproof door leaf.

3. The steel-wood double-opening fireproof door according to claim 2 is characterized in that: The "Z"-shaped limiter also includes a vertical side, and the vertical side of the first limiter and the vertical side of the second limiter are both provided with the fireproof expansion seal.

4. The steel-wood double-opening fireproof door according to claim 1 is characterized in that: A decorative line is provided on a side of the long side of the first limiting member and a side of the long side of the second limiting member away from the fireproof door leaf.

5. The steel-wood double-opening fireproof door according to claim 1 is characterized in that: A fireproof latch is provided at a top end of the first door leaf and / or the second door leaf away from the fireproof hinge.

6. The steel-wood double-opening fireproof door according to claim 1 is characterized in that: The first limiting member and the second limiting member are both made of cold-rolled galvanized steel plates.

7. The steel-wood double-opening fireproof door according to claim 1 is characterized in that: The fireproof door leaf includes an inner frame, a magnesia perlite fireproof door core board, a fireproof board, an inner lining steel plate, and a door leaf panel. The inner frame is arranged in the magnesia perlite fireproof door core board, the fireproof board is arranged on two opposite sides of the magnesia perlite fireproof door core board, the inner lining steel plate is arranged on the surrounding side of the fireproof board, and the door leaf panel is arranged on the surface of the inner lining steel plate corresponding to the fireproof board.

8. The steel-wood double-opening fireproof door according to claim 7 is characterized in that: An outer frame is arranged outside the fireproof door leaf, and a fireproof expansion seal is arranged between the outer frame and the position of the fireproof door frame located outside the door.

9. The steel-wood double-opening fireproof door according to claim 8 is characterized in that: An anti-theft structure is provided between the outer frame and the fireproof door frame.

10. The steel-wood double-opening fireproof door according to claim 1 is characterized in that: A fireproof lock is provided on a side of the fireproof door leaf away from the fireproof hinge. The fireproof lock comprises a keyhole and a handle. The handle is provided with a fireproof coating.

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