Double-leaf fireproof door with smoke-proof function

Abstract

The utility model relates to a double-leaf fireproof door with a smoke-proof function. The double-leaf fireproof door comprises a door frame, a left door body, a right door body, a handle and a lock, the left door body panel and the right door body back plate as well as the right door body panel and the left door body back plate are matched with each other through integrally formed limiting grooves and L-shaped limiting plates, and smoke-proof sealing strips are arranged at the matching positions; when the fireproof door is in a closed state, the limiting groove in the inner side of the right door body back plate corresponds to the bent end of the L-shaped limiting plate in the inner side of the left door body back plate, the hooked edge of the inner end of the right door body back plate is in close contact with the smoke-proof sealing strip in the smoke-proof groove in the inner side of the left door body back plate, and the limiting groove in the inner side of the left door body panel corresponds to the bent end of the L-shaped limiting plate in the right door body panel. And the hooked edge at the inner end of the left door body panel is tightly contacted with the smoke-proof sealing strip in the smoke-proof groove at the inner side of the right door body panel. The smoke-proof sealing groove integrally formed with the door body is matched with the hooked edge, so that the overall structural strength of the door body can be effectively improved, and the safety of the door body is improved while the fireproof and smoke-proof performance is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of building door and window technology, and in particular to a double-leaf fireproof door with smoke prevention function. Background Technology

[0002] The newly released national standard for fire doors, GB12955-2024, will come into effect on May 1, 2026. The new standard requires fire doors to have smoke-proof functionality. Therefore, the demand for fire doors that meet the new national standard will continue to increase.

[0003] Currently, some domestic manufacturers produce fire doors using a split-type smoke-proof sealing groove, such as... Figure 3 As shown, the right door split hook 16 is welded to the right door back panel 15, and the left door split hook 18 is welded to the left door panel 17. However, the disadvantages of this type of split smoke-proof sealing groove are that the process is complex, the processing cost is high, and the smoke-proof performance is poor.

[0004] The split hook joint is connected to the door body by welding or riveting. The weld seam on the surface affects the appearance quality. Moreover, the welding or riveting connection method has poor overall integrity and low structural strength, resulting in poor anti-pry security performance. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this utility model is to provide a double-leaf fire door with smoke prevention function. By integrating the smoke prevention groove and hook with the door body in one piece, the smoke prevention performance can be effectively guaranteed while improving the door body strength.

[0006] The technical solution adopted in this utility model is as follows:

[0007] The utility model provides a double -leaf fire door with smoke function, including door frame, left door body, right door body, handle and lock, left door body and right door body correspond to set up in the both sides of door frame inside, and the outer end of left door body and right door body is hinged with door frame respectively, the handle is set up on right door body panel, the lock is correspondingly set up in the inside of left door body and right door body respectively, the inside of left door body panel and right door body backboard all are integrative along door body height direction and form the limit slot of limit slot and the inner end surface of door body between formation hook edge, the inner end of left door body backplate and right door body panel all are integrative and have L shape limit board along door body height direction, and L shape limit board and the inner side end surface of door body between formation smoke slot, the inside fixed mounting of smoke slot has smoke seal, when fire door closed state, right door body backplate inside limit slot and left door body backplate inside L shape limit board's bended end correspond, right door body backplate inner end hook edge and left door body backplate inside smoke slot's smoke seal close contact, left door body panel inside limit slot and right door body panel inside L shape limit board's bended end correspond, left door body panel inner end hook edge and right door body panel inside smoke slot's smoke seal close contact.

[0008] Further, when the fire door is closed, the end faces of the left door body and the right door body on the opposite side are spaced apart by a certain distance, and the middle portions of the end faces on the opposite side of the left door body and the right door body are each provided with a through slot in the height direction of the door body, and the through slot is fixedly installed with an expansion sealing strip.

[0009] Further, the smoke sealing strip and the expansion sealing strip are both made of fireproof material.

[0010] Further, the upper regions of the left door body and the right door body are each provided with a fireproof window.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model can improve the reliability of the fireproof and smokeproof performance of the door body, and after improvement, the smokeproof sealing groove is integrally formed with the door body, which can effectively improve the overall structural strength of the door body, thereby improving the prying resistance and safety of the door body; at the same time, the production process can be simplified, and the processing cost can be reduced; in addition, after the structure is integrally formed, there is no part connection point on the surface of the door body, the surface is smooth and flat, and the appearance quality of the product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the overall structure of the appearance of the utility model;

[0014] Figure 2 is Figure 1 the B-B section structure schematic view;

[0015] Figure 3It is a schematic diagram of cross section structure of existing double-leaf fireproof door.

[0016] Wherein, the reference sign: 1 - door frame; 2 - left door body; 21 - left door body panel; 22 - left door body backplate; 23 - left door body convex hook edge; 24 - left door body smoke prevention groove; 25 - left door body smoke prevention sealing strip; 26 - left door body through groove; 27 - left door body expansion sealing strip; 3 - right door body; 31 - right door body panel; 32 - right door body backplate; 33 - right door body convex hook edge; 34 - right door body smoke prevention groove; 35 - right door body smoke prevention sealing strip; 36 - right door body through groove; 37 - right door body expansion sealing strip; 4 - handle; 5 - lock; 6 - concave limiting groove; 7 - L-shaped limiting plate; 8 - fire window. DETAILED DESCRIPTION

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0018] It should be noted that in the description of the present application, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not mean that the device or element must have a particular orientation, be constructed and operated in a particular orientation.

[0019] Referring to the drawings Figure 1 The double-leaf fireproof door with smoke prevention function comprises a door frame 1, a left door body 2, a right door body 3, a handle 4 and a lock 5, wherein the left door body 2 and the right door body 3 each have a certain thickness and are respectively arranged on the left and right sides inside the door frame 1, and the outer ends of the left door body 2 and the right door body 3 are respectively hinged to the door frame 1; the upper regions of the left door body 2 and the right door body 3 are each provided with a fire window 8 for easy observation; the handle 4 is arranged on the panel of the right door body 3; and the lock 5 is respectively arranged at the corresponding positions inside the left door body 2 and the right door body 3.

[0020] As Figure 2As shown, the inner side of the left door body panel 21 and the right door body back plate 32 are integrally formed with a concave limiting groove 6 along the door body height direction, and the concave limiting groove 6 on the inner side of the left door body panel 21 and the inner side end surface of the left door body 2 form a left door body protruding hook edge 23, and the concave limiting groove 6 on the inner side of the right door body back plate 32 and the inner side end surface of the right door body 3 form a right door body protruding hook edge 33; the inner end of the left door body back plate 22 and the right door body panel 31 are integrally formed with an L-shaped limiting plate 7 along the door body height direction, and the bent end of the L-shaped limiting plate 7 faces one side of the door body; the L-shaped limiting plate 7 on the inner end of the left door body back plate 22 and the inner side end surface of the left door body 2 form a left door body smoke prevention groove 24; the L-shaped limiting plate 7 on the inner end of the right door body panel 31 and the inner side end surface of the right door body 3 form a right door body smoke prevention groove 34; the left door body smoke prevention groove 24 and the right door body smoke prevention groove 34 are concave grooves, and the left door body smoke prevention groove 24 is fixedly installed with a left door body smoke prevention sealing strip 25 inside, and the right door body smoke prevention groove 34 is fixedly installed with a right door body smoke prevention sealing strip 35 inside.

[0021] When the fireproof door is in a closed state, the concave limiting groove 6 on the inner side of the right door body back plate 32 corresponds to the bent end of the L-shaped limiting plate 7 on the inner side of the left door body back plate 22, the right door body protruding hook edge 33 on the inner end of the right door body back plate 32 is in close contact with the left door body smoke prevention sealing strip 25 in the left door body smoke prevention groove 24 on the inner end of the left door body back plate 22, the concave limiting groove 6 on the inner side of the left door body panel 21 corresponds to the bent end of the L-shaped limiting plate 7 on the inner end of the right door body panel 31, and the left door body protruding hook edge 23 on the inner end of the left door body panel 21 is in close contact with the right door body smoke prevention sealing strip 35 in the right door body smoke prevention groove 34 on the inner side of the right door body panel 31. With the cooperation of the left door body smoke prevention sealing strip 25 and the right door body protruding hook edge 33 and the cooperation of the right door body smoke prevention sealing strip 35 and the left door body protruding hook edge 23, the purpose of sealing and smoke prevention can be achieved.

[0022] In this embodiment, when the fireproof door is in a closed state, the end surfaces of the left door body 2 and the right door body 3 on the opposite side are spaced apart by a certain distance, and a left door body through groove 26 is formed in the middle of the end surface of the left door body 2 opposite to the right door body 3 along the door body height direction, and a left door body expansion sealing strip 27 is fixedly installed inside the left door body through groove 26; the right door body 3 is provided with a right door body through groove 36 in the middle of the end surface opposite to the left door body 2 along the door body height direction, and a right door body expansion sealing strip 37 is fixedly installed inside the right door body through groove 36.

[0023] Among them, the left door body smoke prevention sealing strip 25, the right door body smoke prevention sealing strip 35, the left door body expansion sealing strip 27 and the right door body expansion sealing strip 37 are all made of fireproof material.

[0024] When the fire occurs, the left door body smoke-proof sealing strip 25 and the right door body smoke-proof sealing strip 35 can effectively isolate the smoke, when the temperature reaches a certain degree, the left door body expansion sealing strip 27 and the right door body expansion sealing strip 37 start to automatically expand, the expansion multiple is 4-7 times, the expanded body does not burn after expansion, reliably blocks the left and right door leaves, further isolates the air circulation between the two spaces, effectively prevents the hazards of early fire smoke, toxic gas and hot gas to the human body and blocks the fire spread, plays the role of smoke-proof and fire-proof, wherein, the fire-proof fire window 8 is arranged in the upper area of the left door body and the right door body, the fire outside the door is observed conveniently, effective measures are taken when the fire spreads, meanwhile, the fire-proof window can be seen when escaping, the effect of avoiding collision by opening the door is avoided.

[0025] The matters not described in the utility model are the known technology.

[0026] The above-described embodiments are merely preferred embodiments of the utility model, and do not limit the scope of the utility model, and various deformations and improvements of the technical scheme of the utility model made by the ordinary skilled in the art without departing from the design spirit of the utility model shall fall within the protection scope determined by the claim book of the utility model.

Claims

1. A double-leaf fire door with smoke-proof function, comprising a door frame, a left door body, a right door body, a handle, and a lock, wherein the left and right door bodies are correspondingly disposed on opposite sides inside the door frame, and the outer ends of the left and right door bodies are respectively hinged to the door frame; the handle is disposed on the right door body panel; the locks are respectively disposed inside the left and right door bodies; characterized in that: The inner side of the left door body panel and the right door body backboard is integrally formed with a limiting groove in the door body height direction, and the limiting groove and the inner end surface of the door body form a hook edge; the inner end of the left door body backboard and the right door body panel is integrally formed with an L-shaped limiting plate in the door body height direction, and the L-shaped limiting plate and the inner side end surface of the door body form a smoke prevention groove; the smoke prevention groove is fixedly installed with a smoke prevention sealing strip; when the fireproof door is in the closed state, the inner side limiting groove of the right door body backboard corresponds to the bent end of the L-shaped limiting plate of the left door body backboard, the inner end hook edge of the right door body backboard is in close contact with the smoke prevention sealing strip in the inner side smoke prevention groove of the left door body backboard, the inner side limiting groove of the left door body panel corresponds to the bent end of the L-shaped limiting plate of the right door body panel, and the inner end hook edge of the left door body panel is in close contact with the smoke prevention sealing strip in the inner side smoke prevention groove of the right door body panel.

2. The double-leaf fire door with smoke-proof function according to claim 1, characterized in that: When the fireproof door is in the closed state, the end surfaces of the opposite sides of the left door body and the right door body are spaced apart by a certain distance, and the middle part of the end surfaces of the opposite sides of the left door body and the right door body is provided with a through groove in the door body height direction, and the through groove is fixedly installed with an expansion sealing strip.

3. The double-leaf fire door with smoke-proof function according to claim 1 or 2, characterized in that: The smoke prevention sealing strip and the expansion sealing strip are made of fireproof material.

4. The double-leaf fire door with smoke prevention function according to claim 1, characterized in that: The upper region of the left door body and the right door body is provided with a fireproof window.

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