Double-leafed smoke-proof and fire-proof door with automatic closing

Abstract

The utility model relates to a kind of double-leaf hetero-directional smoke-proof fire door that can be automatically closed, including door frame and first door leaf and second door leaf being set on door frame, door frame includes first side door frame and second side door frame and the upper door frame and lower door frame of connecting the top and bottom of first side door frame and second side door frame, the side of first side door frame close to second side door frame is equipped with first installation slot, the front side of first installation slot is equipped with first embedding slot, the side of second side door frame close to first side door frame is equipped with second installation slot, the rear side of second installation slot is equipped with second embedding slot, first door leaf is hinged with first installation slot, second door leaf is hinged with second installation slot, first door leaf and second door leaf open, first door leaf can be embedded in first embedding slot when opening forward, second door leaf can be embedded in second embedding slot when opening backward.The utility model sets installation slot in front and back two sides respectively in two side door frames, so that first door leaf and second door leaf can open in different directions forward and backward, improve the convenience and practicality of door leaf.

Description

Technical Field

[0001] This utility model relates to the field of smoke and fireproof door technology, and in particular to a double-leaf anti-smoke and fireproof door that can close automatically. Background Technology

[0002] Fire-resistant safety doors are widely used in important public buildings such as high-rise buildings, shopping malls, hotels, and entertainment venues. As a crucial component of building fire protection systems, their quality is extremely important. According to fire report analysis, the vast majority of fire-related deaths are caused by smoke inhalation.

[0003] While existing smoke and fire doors have been continuously improved in terms of smoke protection performance, they still have certain drawbacks in use. Most double-leaf smoke and fire doors on the market are designed to open in the same direction. This design is not conducive to the simultaneous evacuation of personnel from the inside and the rescue work of firefighters from the outside, as the two operations may conflict. For example, Chinese utility model patent CN220487431U discloses a smoke and fire door that includes a door frame, a fire door leaf, and a water sprinkler mechanism. Multiple hinges are symmetrically arranged between the door frame and the fire door leaf, and the door frame and the fire door leaf are connected by hinges.

[0004] The two fire doors open outwards simultaneously, allowing only one person to escape or firefighters to rescue at a time. This makes them impractical and inconvenient, thus requiring further improvement. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a double-leaf anti-smoke and fireproof door with reasonable structure and strong practicality that can be automatically closed. When opened, the first and second leaves can open in different directions, which facilitates the simultaneous evacuation of personnel and fire rescue, and improves the convenience of use.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A self-closing double-leaf anti-smoke and fireproof door includes a door frame and a first door leaf and a second door leaf hinged to the door frame. The door frame includes two opposing first side door frames and a second side door frame, as well as an upper door frame and a lower door frame connecting the top and bottom of the first side door frame and the second side door frame. The first side door frame has a first mounting groove with a forward opening on the side near the second side door frame, and a first recess on the front side of the first mounting groove. The second side door frame has a second mounting groove with a rearward opening on the side near the first side door frame, and a second recess on the rear side of the second mounting groove. The first door leaf is hinged to the first mounting groove by a self-closing hinge, and the second door leaf is hinged to the second mounting groove by a self-closing hinge. The self-closing hinge is used to reset to the closed state after the first door leaf and the second door leaf are opened. When the first door leaf and the second door leaf are in the closed state and are opened, the first door leaf opens forward and can be inserted into the first recess, and the second door leaf opens backward and can be inserted into the second recess.

[0008] Furthermore, the first recess is connected to the first mounting groove, and the first recess and the first side door frame are located on the same side of the wall connected to the first side door frame.

[0009] Furthermore, the second recess is connected to the second mounting groove, and the second recess and the second side door frame are located on the same side of the wall to which the second side door frame is connected.

[0010] Furthermore, the first recess is perpendicular to the first door leaf, and the second recess is perpendicular to the second door leaf.

[0011] Furthermore, a first sealing strip is provided on the side of the first door leaf away from the second door leaf and on the side of the second door leaf away from the first door leaf respectively, and a second sealing strip is provided on the side of the second door leaf close to the first door leaf to seal with the first door leaf.

[0012] Furthermore, a third sealing strip is provided on the inner side of the first mounting groove and the second mounting groove, a fourth sealing strip is provided on the outer side of the first mounting groove parallel to the rear side of the first door leaf, and a fourth sealing strip is provided on the outer side of the second mounting groove parallel to the front side of the second door leaf.

[0013] Furthermore, the upper and lower door frames are respectively provided with a fourth sealing strip on the side near the first and second door leaves.

[0014] Furthermore, a small passage door is provided at the bottom of the side of the first door leaf near the second door leaf, and the small passage door is connected to the first door leaf by a spring self-closing hinge.

[0015] Furthermore, multiple reinforcing frames are welded and fixed inside the first and second door panels, and the interiors of the first and second door panels are filled with fireproof door core material.

[0016] Furthermore, a fireproof door handle is provided on the front side of the first door leaf near the second door leaf and on the rear side of the second door leaf near the first door leaf.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] First, the first door leaf of this utility model is hinged to the first mounting groove with the front opening, and the second door leaf is hinged to the second mounting groove with the rear opening. When the door leaf is opened, the first door leaf opens forward and the second door leaf opens backward. The two door leaves can provide access for people from different directions, which is convenient, quick and practical.

[0019] Secondly, a first groove and a second groove are respectively set in the walls on both sides. After the first door leaf and the second door leaf are opened, they can be embedded into the first groove and the second groove respectively, and are attracted by magnetic locks, providing more space for the road and facilitating passage.

[0020] Finally, fire-resistant expansion sealing strips are installed on both sides of the first and second door panels, and a fire-resistant expansion sealing strip is installed between the first and second door panels. Multiple fire-resistant expansion sealing strips are installed on the first and second side door frames to improve the sealing performance of the door panels and effectively prevent smoke and fire. Attached Figure Description

[0021] Figure 1 This is a cross-sectional schematic diagram of a double-leaf anti-smoke and fireproof door that can be automatically closed according to this utility model.

[0022] Figure 2 This is a partially enlarged schematic diagram of the first side door frame of this utility model.

[0023] Figure 3 This is a cross-sectional schematic diagram of the passageway gate of this utility model.

[0024] Figure 4 This is a vertical cross-sectional view of a double-leaf anti-smoke and fireproof door that can close automatically according to this utility model.

[0025] Figure 5 This is a top view of a double-leaf, opposite-direction smoke and fireproof door that can close automatically, and a wall, according to this utility model.

[0026] Figure 6 This is a front view of a double-leaf anti-smoke and fireproof door that can close automatically according to this utility model. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings.

[0028] like Figures 1 to 6 As shown, this utility model provides an automatically closing double-leaf anti-smoke and fireproof door with opposite orientation, including a door frame 1 and a first door leaf 2 and a second door leaf 3 hinged to the door frame 1. The door frame 1 includes two oppositely arranged first side door frames 11 and second side door frames 12, and an upper door frame 13 and a lower door frame 14 connecting the top and bottom of the first side door frames 11 and the second side door frames 12. The first side door frame 11 has a first mounting groove 111 with a forward opening on the side near the second side door frame 12, and a first recess 112 is provided on the front side of the first mounting groove 111. The second side door frame 12 has a rearward opening on the side near the first side door frame 11. The second mounting groove 121 of the door is provided, and the rear side of the second mounting groove 121 is provided with a second recess 122. The first door leaf 2 is hinged to the first mounting groove 111 by a self-closing hinge, and the second door leaf 3 is hinged to the second mounting groove 121 by a self-closing hinge. The self-closing hinge adopts a "center hanger" hinge with hydraulic self-closing function, which has good load-bearing capacity and is easy to open. The self-closing hinge is used to reset to the closed state after the first door leaf 2 and the second door leaf 3 are opened. When the first door leaf 2 and the second door leaf 3 are in the closed state and are opened, the first door leaf 2 can be inserted into the first recess 112 by opening forward, and the second door leaf 3 can be inserted into the second recess 122 by opening backward.

[0029] In this embodiment, the first recess 112 is connected to the first mounting groove 111, and the first recess 112 and the first side door frame 11 are located on the same side of the wall to which the first side door frame 11 is connected.

[0030] In this embodiment, the second groove 122 is connected to the second mounting groove 121, and the second groove 122 and the second side door frame 12 are located on the same side of the wall connected to the second side door frame 12.

[0031] After the first door leaf 2 and the second door leaf 3 are opened, they are respectively embedded in the first groove 112 and the second groove 122, so that the first door leaf 2 and the second door leaf 3 will not occupy extra passage space, making it more convenient for personnel evacuation and fire rescue passage.

[0032] In this embodiment, the first groove 112 is perpendicular to the first door leaf 2, and the second groove 122 is perpendicular to the second door leaf 3. The first door leaf 2 and the second door leaf 3 are respectively attracted into the first groove 112 and the second groove 122 by magnetic force, so that daily passage is unobstructed.

[0033] In this embodiment, a first sealing strip 41 is provided on the side of the first door leaf 2 away from the second door leaf 3 and on the side of the second door leaf 3 away from the first door leaf 2, respectively. A second sealing strip 42 is provided on the side of the second door leaf 3 close to the first door leaf 2 to seal with the first door leaf 2. Both the first sealing strip 41 and the second sealing strip 42 are fire-resistant expansion sealing strips. When the fire-resistant expansion sealing strips are heated, they expand and deform. The first sealing strip 41 expands to wrap the outer walls of the first door leaf 2 and the second door leaf 3, and the second sealing strip 42 expands to wrap the side walls of the first door leaf 2 and the second door leaf 3 that are close to each other. This reduces the leakage of smoke from the gaps in the door leaf, and the sealing and smoke prevention effect is excellent, effectively ensuring the safety of personnel.

[0034] In this embodiment, a third sealing strip 43 is provided on the inner side of the first mounting groove 111 and the second mounting groove 121. A fourth sealing strip 44 is provided on the outer side of the first mounting groove 111 parallel to the rear side of the first door leaf 2. A fourth sealing strip 44 is provided on the outer side of the second mounting groove 121 parallel to the front side of the second door leaf 3. Both the third sealing strip 43 and the fourth sealing strip 44 are fire-resistant expansion sealing strips. The third sealing strip 43 expands to wrap the side walls of the first side door frame 11 and the second side door frame 12. The fourth sealing strip 44 expands to wrap the gap between the door leaf and the door frame, resulting in excellent sealing and smoke prevention effects.

[0035] In this embodiment, the upper door frame 13 and the lower door frame 14 are respectively provided with a fourth sealing strip 44 on the side close to the first door leaf 2 and the second door leaf 3, so as to reduce the gap between the first door leaf 2 and the second door leaf 3 and the upper and lower door frames and ensure the sealing and smoke prevention effect.

[0036] In this embodiment, a passage door 5 is provided at the bottom of the side of the first door leaf 2 near the second door leaf 3. The passage door 5 is connected to the first door leaf 2 by a spring self-closing hinge 51, so that when the first door leaf 2 and the second door leaf 3 are not opened, the passage door 5 can be used to transport water to the fire source with fire hoses, reducing the risk of dense smoke entering the safety passage and greatly protecting the lives of people in the safety passage. In addition, a strong magnet is installed inside the passage door 5. During normal use, the magnet will attract and close the passage door 5. In case of fire, the passage door 5 can be pushed open and the fire hose can be passed through the door to extinguish the fire and rescue the fire. The door leaf can also be kept closed automatically.

[0037] In this embodiment, the first door leaf 2 and the second door leaf 3 are cold-rolled from galvanized steel sheets. Multiple reinforcing frames 6 are welded and fixed inside the first door leaf 2 and the second door leaf 3 to ensure the strength of the door leaf. The first door leaf 2 and the second door leaf 3 are filled with fireproof door core material 7. The fireproof door core material 7 includes glass magnesium fireproof board and fireproof door core board. The main materials of the fireproof door core board are magnesium oxide, magnesium chloride and inorganic binder to ensure the fireproof and fire-resistant properties of the door leaf.

[0038] In this embodiment, a fireproof door handle 8 is provided on the front side of the first door leaf 2 near the second door leaf 3 and the rear side of the second door leaf 3 near the first door leaf 2. The fireproof door handle 8 is not only fireproof and fire-resistant, but also not easily damaged in a fire, and facilitates the evacuation of people when the door is opened.

[0039] Fireproof locks 9 are installed on the first door leaf 2 and the second door leaf 3, and the first door leaf 2 and the second door leaf 3 are locked by fireproof bolts 10.

[0040] The above description is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Any simple equivalent changes and modifications made in accordance with the scope of the present utility model patent application and the description of the utility model shall still fall within the scope of the present utility model patent.

Claims

1. A self-closing, double-leaf, opposite-direction smoke and fireproof door, comprising a door frame and a first door leaf and a second door leaf hinged to the door frame, wherein the door frame includes two oppositely arranged first side door frames and second side door frames, and an upper door frame and a lower door frame connecting the top and bottom of the first side door frames and the second side door frames, characterized in that: The first side door frame has a first mounting groove with a forward opening on the side near the second side door frame, and a first recess on the front side of the first mounting groove. The second side door frame has a second mounting groove with a rearward opening on the side near the first side door frame, and a second recess on the rear side of the second mounting groove. The first door leaf is hinged to the first mounting groove by a self-closing hinge, and the second door leaf is hinged to the second mounting groove by a self-closing hinge. The self-closing hinge is used to return to the closed state after the first door leaf and the second door leaf are opened. When the first door leaf and the second door leaf are in the closed state and are opened, the first door leaf can be inserted into the first recess by opening forward, and the second door leaf can be inserted into the second recess by opening backward.

2. The automatically closing double-leaf anti-smoke and fireproof door according to claim 1, characterized in that: The first recess is connected to the first mounting groove, and the first recess and the first side door frame are located on the same side of the wall connected to the first side door frame.

3. The automatically closing double-leaf anti-smoke and fireproof door according to claim 2, characterized in that: The second recess is connected to the second mounting groove, and the second recess and the second side door frame are located on the same side of the wall to which the second side door frame is connected.

4. The automatically closing double-leaf anti-smoke and fireproof door according to claim 3, characterized in that: The first groove is perpendicular to the first door leaf, and the second groove is perpendicular to the second door leaf.

5. The automatically closing double-leaf anti-smoke and fireproof door according to claim 4, characterized in that: The first door leaf is provided with a first sealing strip on the side away from the second door leaf and the second door leaf is provided with a second sealing strip on the side of the second door leaf that is close to the first door leaf and is sealed to cooperate with the first door leaf.

6. The automatically closing double-leaf anti-smoke and fireproof door according to claim 5, characterized in that: A third sealing strip is provided on the inner side of the first mounting groove and the second mounting groove, a fourth sealing strip is provided on the outer side of the first mounting groove parallel to the rear side of the first door leaf, and a fourth sealing strip is provided on the outer side of the second mounting groove parallel to the front side of the second door leaf.

7. A double-leaf anti-smoke and fireproof door that can be automatically closed according to claim 6, characterized in that: The upper and lower door frames are each provided with a fourth sealing strip on the side closest to the first and second door panels.

8. A double-leaf anti-smoke and fireproof door that can be automatically closed according to claim 7, characterized in that: The bottom side of the first door leaf near the second door leaf has a small passage door, which is connected to the first door leaf by a spring-loaded self-closing hinge.

9. A double-leaf anti-smoke and fireproof door that can be automatically closed according to claim 8, characterized in that: The first and second door panels have multiple reinforcing frames welded and fixed inside, and the interiors of the first and second door panels are filled with fireproof door core material.

10. A double-leaf anti-smoke and fireproof door that can be automatically closed according to claim 9, characterized in that: A fireproof door handle is provided on the front side of the first door leaf near the second door leaf and on the rear side of the second door leaf near the first door leaf.

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