Reinforced steel fireproof door

Abstract

The utility model discloses a reinforced steel fireproof door, which relates to the technical field of fireproof doors and comprises a door frame. A fireproof door body is rotationally connected to the inner side wall of the door frame through hinges, sealing covers are inserted into the two sides of the fireproof door body, and a hole is formed in the front end of the fireproof door body. And the sealing assembly is used for assisting rescue work and improving the sealing performance of the fireproof door body, and the sealing assembly is connected with the fireproof door body. According to the fireproof door, a fire hose can transport a water source to a fire site under the condition that the fireproof door is not opened through the arranged fixing assembly, the risk that dense smoke enters a safety channel is reduced, and the life safety of personnel in the safety channel is protected to a great extent; and the metal clamping pieces are of a corrugated structure, thermal expansion stress can be eliminated when the fireproof door is heated, expansion deformation of the fireproof door body after the fireproof door body is heated is further avoided, and the overall fireproof performance and strength of the fireproof door body are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire doors, in particular to a reinforced steel fire door. Background Art

[0002] A fire door refers to a door that can meet the requirements of fire resistance stability, integrity and heat insulation within a certain period of time. It is a fire partition with a certain fire resistance set in fire compartments, evacuation stairwells, vertical shafts, etc. It is specifically used to isolate the fire source in building construction and plays a huge role in fire protection work. Once a fire occurs, people can obtain an escape opportunity through the fire door.

[0003] At present, the fire door frame is composed of multiple layers. During a fire, after the fire door frame is heated, it expands, resulting in gaps between layers. In this way, the smoke and flames outside the door can spread into the door through the gaps generated between the layers, causing the smoke to enter the door and reducing the visibility when people escape.

[0004] In the prior art, a Chinese patent with the publication number CN105952348A was proposed to solve the above technical problems. The technical solution disclosed in the patent document is as follows: a fire door frame includes a multi-layer board, a first inorganic fireproof board, a second inorganic fireproof board and a fireproof rubber strip. The first inorganic fireproof board is attached to the multi-layer board, and the first inorganic fireproof board is located on the side of the fire door frame facing the door leaf; in the first inorganic fireproof board and the multi-layer board, the side facing the outside of the door is flush with each other to form an installation surface; in the first inorganic fireproof board and the multi-layer board, the side facing the inside of the door is spaced apart from each other to form a stepped surface; the second inorganic fireproof board covers the installation surface, and the second inorganic fireproof board is fixedly connected to both the multi-layer board and the first inorganic fireproof board at the same time; the fireproof rubber strip is fixedly fitted at the corner of the stepped surface. During a fire, it can close the gap between the first inorganic fireproof board and the multi-layer board through the second inorganic fireproof board and the fireproof rubber strip, preventing the smoke and flames outside the door from spreading into the door through the gap between the first inorganic fireproof board and the multi-layer board, thereby improving the fire protection performance. However, when firefighters go to the fire site to extinguish the fire, they need to use fire fighting equipment such as fire hoses and fire extinguishers to extinguish the fire. During this process, the fire door needs to be opened and then wait for the firefighters to enter to extinguish the fire. However, the fire hose will get stuck in the gap between the fire door and the door frame, resulting in thick smoke caused by the fire seeping out from the door gap, thus threatening the lives of the people in the escape passage, making it difficult for the escapees to see the route clearly, intensifying the panic of the escapees, and further causing the escapees to be more likely to fall or collide, increasing the risk of injury. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a reinforced steel fire door to solve the problem proposed in the above background technology that smoke seeps out from the door gap, making it difficult for escapees to see the route clearly, intensifying the panic of the escapees, and then causing the escapees to be more likely to fall or collide, increasing the risk of injury.

[0006] To solve the above technical problems, the technical solution adopted by the present utility model is:

[0007] A reinforced steel fire door includes a door frame; a fire door main body is rotatably connected to the inner side wall of the door frame through a hinge, sealing covers are inserted on both sides of the fire door main body, and a hole is opened at the front end of the fire door main body; a sealing component, which is used to assist in rescue work and increase its sealing performance, and is connected to the fire door main body.

[0008] The further improvement of the technical solution of the present utility model lies in: the sealing component includes a plurality of limiting grooves arranged in a circumferential array on both sides of the fire door main body, and one side of the sealing cover is fixedly connected with a plurality of clamping blocks that match the shape contour of the fire door main body.

[0009] Adopting the above technical solution, in this solution, the hole penetrates through the lower end of the fire door main body near the hinge side. The shape contours of the three limiting grooves on the two side surfaces of the fire door main body are the same as those of the clamping blocks on one side of the sealing cover. Therefore, the clamping blocks can be clamped into the limiting grooves, so that the two sealing covers are fixed on both sides of the fire door main body, thus making the surface of the fire door main body have no gap for smoke to flow out when there is no fire, increasing the sealing performance of the fire door main body and protecting the parts inside the fire door main body from damage.

[0010] The further improvement of the technical solution of the present utility model lies in: a fixing groove is opened at the middle position of the fire door main body, two sealing sheets are fixedly connected to the inner side wall of the fixing groove, and a plurality of telescopic bases arranged in a circumferential array are fixedly connected to the inner side wall of the fixing groove.

[0011] Adopting the above technical solution, in this solution, the diameter of the fixing groove is larger than the diameter of the above hole. Taking the center of the hole as the center and located at the middle position of the fire door main body, and it does not penetrate through the fire door main body. Five telescopic bases are arranged on the inner side wall of the fixing groove, and two springs are arranged at the middle position of each telescopic base.

[0012] The further improvement of the technical solution of the present utility model lies in: the tops of the telescopic bases are all fixedly connected with elastic bases, and the top of each elastic base is fixedly connected with an arc-shaped clamping piece.

[0013] The above technical solution is adopted. In this solution, the elastic base located at the top of the telescopic base is two symmetrical M-shaped elastic structures, which cooperate with the spring in the telescopic base to achieve the telescopic effect. The arc-shaped clip is an arc-shaped rigid structure, and its top and bottom ends have outward-bent rounded corners. The smooth surface makes it more convenient for the fire hose to enter.

[0014] A further improvement of the technical solution of the utility model is that: the top end of the arc-shaped clip is fixedly connected with an expansion block, and the inner side wall of the arc-shaped clip is fixedly connected with two fixed clips.

[0015] The above technical solution is adopted, in which a fixing clip in the shape of an "X" is fixed on the inner wall of each arc-shaped clip, the top of which is connected to the arc-shaped clip, and weakened grooves are provided on both sides of the connecting surface, so that the fixing clip can be deformed to expand to both sides, and the bottom has an outward-turned rounded corner, so that the placement of the fire hose can be smoother.

[0016] A further improvement of the technical solution of the utility model is that: elastic sheets are fixedly connected to both sides of the arc-shaped clamping sheet, and the elastic sheets are corrugated elastic structures.

[0017] By adopting the above technical solution, in which the elastic piece is located at the connection position of the two arc-shaped clamping pieces, when the diameter of the clamp composed of the arc-shaped clamping pieces changes, the length can be changed accordingly.

[0018] A further improvement of the technical solution of the utility model is that a metal clip is fixedly connected to the middle position of the fire door body, and the metal clip is a corrugated rigid structure.

[0019] The above-mentioned technical solution is adopted, in which a metal clip is further provided inside the fire door body to increase the overall strength of the fire door body, and the metal clip has a corrugated structure, which can eliminate thermal expansion stress when heated, and further avoid the fire door body from expanding and deforming after being heated, thereby improving the overall fire resistance and strength of the fire door body.

[0020] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0021] 1. The utility model provides a reinforced steel fire door. Through the sealing component, the fire hose can transport water to the fire without opening the fire door, reducing the risk of thick smoke entering the safety passage, protecting the lives of people in the safety passage to a great extent, and preventing thick smoke from seeping out from the door gap, making it difficult for escapees to see the route, aggravating the panic of escapees, and avoiding the problem of escapees falling or colliding, which increases the risk of injury.

[0022] 2. The utility model provides a reinforced steel fire door. By arranging metal clips inside the fire door main body, the overall strength of the fire door main body is increased. The metal clips are in a corrugated structure, which can eliminate thermal expansion stress when heated, further avoid the expansion and deformation of the fire door main body after being heated, and improve the overall fire resistance and strength of the fire door main body.

[0023] 3. The utility model provides a reinforced steel fire door. On the inner side wall of each arc clip arranged, a fixed clip in a shape of "Ji" is fixed. Its top is connected with the arc clip, and weakening grooves are arranged on both sides of the connection surface, so that the fixed clip can deform and expand to both sides. Its bottom has a rounded corner that turns outwards, so that the placement of the fire hose can be smoother. At the same time, the arc clip and the fixed clip can be used to limit the fire hose. When water passes through the fire hose, the fire hose expands, so that the arc clip and the fixed clip that contact it can shift in position. At this time, with the cooperation of the above-mentioned telescopic base and elastic base, adjustment can be made according to its diameter size. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The following further illustrates the present utility model with reference to the drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the cooperation of the holes in the present utility model;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the sealing cover in the present utility model;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the cooperation of the fire door main body and the arc clip in the present utility model;

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the cooperation of the sealing piece and the arc clip in the present utility model;

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the cooperation of the elastic base and the elastic piece in the present utility model;

[0031] Figure 7 It is a schematic diagram of the three-dimensional structure of the cooperation of the fire door main body and the metal clip in the present utility model.

[0032] In the figure: 1. door frame; 2. fire door body; 3. sealing cover; 4. hole; 5. limit groove; 6. sealing sheet; 7. clamping block; 8. fixing groove; 9. telescopic base; 10. elastic base; 11. arc clip; 12. elastic sheet; 13. fixing clip; 14. expansion block; 15. metal clip. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the embodiments:

[0034] Example 1

[0035] like Figure 1 As shown, the utility model provides a reinforced steel fire door, including a door frame 1; a fire door body 2 is rotatably connected to the inner wall of the door frame 1 through a hinge, sealing covers 3 are inserted on both sides of the fire door body 2, and a hole 4 is opened at the front end of the fire door body 2; a sealing component, the sealing component is used to assist in rescue work and increase its sealing performance, and the sealing component is connected to the fire door body 2.

[0036] In this embodiment, the sealing assembly is set up so that the fire hose can transport water to the fire without opening the fire door, thereby reducing the risk of thick smoke entering the safety passage, protecting the lives of people in the safety passage to a great extent, and preventing thick smoke from seeping out from the door gaps, making it difficult for escapees to see the route, aggravating the panic of escapees, and avoiding escapees falling or colliding, increasing the risk of injury.

[0037] Example 2

[0038] like Figure 2 and Figure 3 As shown, based on Example 1, the utility model provides a technical solution: preferably, the sealing component includes a plurality of limiting grooves 5 distributed in a circular array on both sides of the fire door body 2, and a plurality of limiting grooves 5 distributed in a circular array are provided on both sides of the fire door body 2, and one side of the sealing cover 3 is fixedly connected with a plurality of snap-in blocks 7 that are adapted to the shape contour of the fire door body 2.

[0039] In this embodiment, the hole 4 passes through the lower end of the fire door body 2 close to the hinge side, and the three limiting grooves 5 on the two side surfaces of the fire door body 2 have the same shape and contour as the snap-in block 7 on one side of the sealing cover 3. Therefore, the snap-in block 7 can be snapped into the limiting groove 5, so that the two sealing covers 3 are fixed on both sides of the fire door body 2, so that there is no gap on the surface of the fire door body 2 for smoke to flow out when there is no fire, thereby increasing the sealing of the fire door body 2 while protecting the internal parts of the fire door body 2 from damage.

[0040] Example 3

[0041] likeFigure 4 , Figure 5 and Figure 6 As shown in Figure 4 , Figure 5 and Figure 6 , on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, a fixing groove 8 is provided at the middle position of the fire door body 2. Two sealing pieces 6 are fixedly connected to the inner side wall of the fixing groove 8. A plurality of telescopic bases 9 distributed in a circumferential array are fixedly connected to the inner side wall of the fixing groove 8. Elastic bases 10 are fixedly connected to the tops of the telescopic bases 9. Arc-shaped clamping pieces 11 are fixedly connected to the tops of each elastic base 10. Expansion blocks 14 are fixedly connected to the tops of the arc-shaped clamping pieces 11. Two fixing clamping pieces 13 are fixedly connected to the inner side walls of the arc-shaped clamping pieces 11. Elastic pieces 12 are fixedly connected to both sides of the arc-shaped clamping pieces 11. The elastic pieces 12 are corrugated elastic structures.

[0042] In this embodiment, the diameter of the fixing groove 8 is larger than the diameter of the above-mentioned hole 4. Taking the center of the hole 4 as the center and located at the middle position of the fire door body 2, and it does not penetrate the fire door body 2. Five telescopic bases 9 are provided on the inner side wall of the fixing groove 8. Two springs are provided at the middle position of each telescopic base 9. The elastic base 10 located at the top of the telescopic base 9 is a symmetrical M-shaped elastic structure, which cooperates with the springs in the telescopic base 9 to achieve the telescopic effect.

[0043] Specifically, the arc-shaped clamping piece 11 is an arc-shaped rigid structure, and both its top and bottom have rounded corners bent outwards. The surface is smooth, which is more convenient for the fire hose to enter. Five arc-shaped clamping pieces 11 are used in cooperation with the elastic pieces 12 to form a circular fixture. The diameter of the fixture formed by the arc-shaped clamping pieces 11 is changed by the telescoping of the telescopic base 9 and the elastic base 10. It should be noted that the diameter of the fixture formed by the arc-shaped clamping pieces 11 can be adjusted correspondingly according to the diameter of the fire hose. The elastic piece 12 is located at the connection position of the two arc-shaped clamping pieces 11. When the diameter of the fixture formed by the arc-shaped clamping pieces 11 changes, its length can change accordingly.

[0044] Furthermore, a U-shaped fixing clamping piece 13 is fixedly arranged on the inner side wall of each arc-shaped clamping piece 11. Its top is connected to the arc-shaped clamping piece 11, and weakening grooves are provided on both sides of the connection surface, so that the fixing clamping piece 13 can undergo deformation of expanding outwards on both sides. Its bottom has a rounded corner turned outwards, so that the placement of the fire hose can be smoother. At the same time, the arc-shaped clamping piece 11 and the fixing clamping piece 13 can be used to limit the fire hose. When water passes through the fire hose, the fire hose expands, so that the arc-shaped clamping piece 11 and the fixing clamping piece 13 in contact with it shift in position. At this time, in cooperation with the above-mentioned telescopic base 9 and elastic base 10, it can be adjusted according to its diameter size.

[0045] Furthermore, an expansion block 14 is provided inside the rounded corner where the arc-shaped clip 11 turns outwards. When the expansion block 14 is heated, it can expand and deform, thereby wrapping the outer wall of the fire hose, reducing the leakage of smoke from the gap between the arc-shaped clip 11 and the fire hose, and effectively ensuring the safety of the personnel in the safety passage.

[0046] Embodiment 4

[0047] As Figure 7 shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, a metal clip 15 is fixedly connected at the middle position of the fire door main body 2, and the metal clip 15 is a corrugated rigid structure.

[0048] In this embodiment, a metal clip 15 is further provided inside the fire door main body 2 to increase the overall strength of the fire door main body 2. Moreover, the metal clip 15 is a corrugated structure, which can eliminate the thermal expansion stress when heated, and further avoid the expansion and deformation of the fire door main body 2 after being heated, improving the overall fire resistance and strength of the fire door main body 2.

[0049] Next, the working principle of the reinforced steel fire door will be specifically described.

[0050] As Figures 1-7As shown in the figure, after installing the fire door main body 2 and the door frame 1, the clamping block 7 is clamped into the limiting groove 5, so that the two sealing covers 3 are fixed on both sides of the fire door main body 2. Thus, when there is no fire, there is no gap for smoke to flow out on the surface of the fire door main body 2, increasing the sealing performance of the fire door main body 2 and protecting the parts inside the fire door main body 2 from damage. Among them, the three limiting grooves 5 on both sides of the fire door main body 2 have the same shape and contour as the clamping block 7 on one side of the sealing cover 3. The hole 4 penetrates through the lower end of the fire door main body 2 near the hinge side. The diameter of the fixing groove 8 is larger than the diameter of the hole 4. Taking the center of the hole 4 as the center and located at the middle position of the fire door main body 2, and it does not penetrate through the fire door main body 2. Five telescopic bases 9 are arranged on the inner side wall of the fixing groove 8. Two springs are arranged at the middle position of each telescopic base 9. The elastic base 10 at the top of the telescopic base 9 is a symmetric M-shaped elastic structure, which cooperates with the springs in the telescopic base 9 to achieve the telescopic effect. Specifically, the arc-shaped clip 11 is an arc-shaped rigid structure, and both its top and bottom have rounded corners bent outward. The surface is smooth, which is more convenient for the fire hose to enter. Using five arc-shaped clips 11 to cooperate with the elastic sheet 12 to form a circular fixture, and changing the diameter of the fixture formed by the arc-shaped clips 11 through the telescopic movement of the telescopic base 9 and the elastic base 10. It should be noted that the diameter of the fixture formed by the arc-shaped clips 11 can be adjusted correspondingly according to the diameter of the fire hose. Among them, the elastic sheet 12 is located at the connection position of the two arc-shaped clips 11. When the diameter of the fixture formed by the arc-shaped clips 11 changes, its length can change accordingly. Further, a fixed clip 13 in a U-shaped structure is fixed on the inner side wall of each arc-shaped clip 11. Its top is connected to the arc-shaped clip 11, and weakening grooves are provided on both sides of the connection surface, so that the fixed clip 13 can undergo deformation and expand to both sides. Its bottom has a rounded corner turned outward, so that the placement of the fire hose can be more smooth. Further, an expansion block 14 is also provided inside the rounded corner where the arc-shaped clip 11 turns outward. When the expansion block 14 is heated, it can expand and deform, so as to wrap the outer wall of the fire hose, reducing the leakage of smoke from the gap between the arc-shaped clip 11 and the fire hose, effectively ensuring the safety of the personnel in the safety passage. A metal clip 15 is also provided inside the fire door main body 2 to increase the overall strength of the fire door main body 2. And the metal clip 15 is a corrugated structure, which can eliminate the thermal expansion stress when heated, further avoiding the expansion and deformation of the fire door main body 2 after being heated, and improving the overall fire prevention performance and strength of the fire door main body 2.

[0051] Generally speaking, the above has described the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, the modifications or improvements made without departing from the spirit and concept of the present utility model are all within the protection scope of the present utility model.

Claims

1. A reinforced steel fire door, comprising a door frame (1); characterized in that: On the inner side wall of the door frame (1), a fire door main body (2) is rotatably connected through a hinge. On both sides of the fire door main body (2), sealing covers (3) are inserted. A hole (4) is opened at the front end of the fire door main body (2). A sealing component, which is used to assist in rescue work and increase its sealing performance, and is connected to the fire door main body (2).

2. The strengthened steel fire door according to claim 1, characterized in that: The sealing component includes a plurality of limiting grooves (5) arranged in a circumferential array on both sides of the fire door main body (2). On one side of the sealing cover (3), a plurality of clamping blocks (7) adapted to the shape contour of the fire door main body (2) are fixedly connected.

3. The strengthened steel fire door according to claim 2, wherein: A fixing groove (8) is opened at the middle position of the fire door main body (2). On the inner side wall of the fixing groove (8), two sealing sheets (6) are fixedly connected. On the inner side wall of the fixing groove (8), a plurality of telescopic bases (9) arranged in a circumferential array are fixedly connected.

4. The reinforced steel fire door according to claim 3, characterized in that: Elastic bases (10) are fixedly connected to the tops of the telescopic bases (9). An arc-shaped clamping piece (11) is fixedly connected to the top of each elastic base (10).

5. The reinforced steel fire door according to claim 4, characterized in that: Expansion blocks (14) are fixedly connected to the tops of the arc-shaped clamping pieces (11). Two fixing clamping pieces (13) are fixedly connected to the inner side walls of the arc-shaped clamping pieces (11).

6. The reinforced steel fire door according to claim 5, characterized in that: Elastic pieces (12) are fixedly connected to both sides of the arc-shaped clamping piece (11). The elastic piece (12) is a corrugated elastic structure.

7. The reinforced steel fire door according to claim 6, characterized in that: A metal clamping piece (15) is fixedly connected to the middle position of the fire door main body (2). The metal clamping piece (15) is a corrugated rigid structure.

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