Fireproof door sealing structure

Abstract

The utility model discloses a fireproof door sealing structure, which relates to the technical field of safety fire protection, and comprises a door body and an inner frame, the center position of the door body is rotatably connected with a bearing, the two ends of the bearing are fixedly connected with rotating discs, four first rotating seats are distributed on the outer side walls of the rotating discs at equal intervals, and the first rotating seats are fixedly connected with the inner frame. According to the telescopic door, the telescopic movable sealing frames are arranged on the four sides of the door body, when the door body needs to be closed on the inner frame, the rocker is held by a hand to drive the rotating discs on the two sides to rotate by the same angle, and therefore the door body can be closed by the inner frame; the rotating disc pushes the sealing frames to move outwards through the linkage rods, so that the sealing frames on the two sides are both buckled on the two sides of the inner frame, the sealing effect on the two sides is achieved through meshing between the door body and the inner frame, and the sealing protection effect on fire on the two sides of the fireproof door is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of safety fire protection, in particular to a fire door sealing structure. Background Art

[0002] Fire doors refer to doors that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. They are fireproof partitions with a certain degree of fire resistance, located between fire compartments, evacuation stairwells, vertical shafts, etc. In addition to the functions of ordinary doors, fire doors can also prevent the spread of fire and smoke, and can prevent the spread of fire within a certain period of time to ensure the evacuation of personnel.

[0003] For example, "A sealed fire door structure" with patent publication number CN109577824A includes fireproof glass embedded in the middle of the fire door, fireproof door core panels arranged on both sides of the fireproof glass, fireproof glass moldings, and a first fireproof composite panel and a second fireproof composite panel clamped on both sides of the fireproof door core panel. The first fireproof composite panel is arranged on one side of the fireproof door core panel, and the second fireproof composite panel is connected to the fireproof glass molding in the length direction and is arranged on the other side of the fireproof door core panel to form a structure for clamping the fireproof glass.

[0004] However, in the prior art, when a fire occurs, closing the fire door can isolate the fire, but it will also cause inconsistent temperatures on both sides of the door, thereby causing a pressure difference on both sides of the door. In order to ensure the sealing of the fire door, it is necessary to set a reinforcement structure on both sides of the door to prevent the pressure from pushing the door open. The existing fire door lock adopts an asymmetric protection design. The fixed structure from the outside of the door to the inside of the door is stable and can withstand the pressure generated by the fire. However, the fixed structure from the inside of the door to the outside of the door is unstable. If a fire occurs inside, the pressure generated will easily push the door open. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art that the fire door lock adopts an asymmetric protection design, the stability of the fixing structure from the inside of the door to the outside of the door is poor, and when a fire occurs, the temperatures on both sides of the door are inconsistent, resulting in a pressure difference on both sides of the door that pushes the door open, and a fire door sealing structure is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fire door sealing structure, including a door body and an inner frame, a bearing is rotatably connected at the center position of the door body, and both ends of the bearing are fixedly connected to a rotating disk, and the outer wall of the rotating disk is evenly distributed with four first rotating seats, the outer wall of the first rotating seat is rotatably connected to a linkage rod, one end of the linkage rod is rotatably connected to a second rotating seat, the outer wall of the second rotating seat is fixedly connected to a sealing frame, the inner wall of the sealing frame is fixedly connected to a slider, a guide groove is opened on the surface of the door body, the guide groove is slidably connected to the slider, and the inner frame is a boss structure with a high middle and low ends.

[0007] Preferably, a rocker is fixedly connected to the surface of the rotating disk, and an outer wall of the rocker is sheathed with heat insulating fabric.

[0008] Preferably, handles are fixedly connected to both sides of the door body.

[0009] Preferably, the outer side wall of the inner frame is fixedly connected to the outer frame.

[0010] Preferably, a connecting frame is movably connected between the outer frame and the door body.

[0011] Preferably, the side wall of the sealing frame is slidably connected to the side wall of the door body, and magnets are fixedly connected at two corner positions of the sealing frame.

[0012] Preferably, the outer side wall of the door body and the inner side wall of the outer frame are both fixedly connected with rubber strips.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, retractable and movable sealing frames are arranged on the four sides of the door body. When the door body needs to be closed on the inner frame, the hand-held rocker drives the rotating disks on both sides to rotate to the same angle. The rotating disks push the sealing frames to move outward through the linkage rod, so that the sealing frames on both sides are buckled on the two sides of the inner frame. The bite between the door body and the inner frame forms a sealing effect on both sides, thereby achieving a sealing protection effect on the fire on both sides of the fire door.

[0015] 2. In the utility model, the guide groove is designed as an inverted T shape. At the same time, the slider is set as a truncated cone slider. The interlocking relationship between the slider and the sealing frame is utilized so that the sealing frame is always in contact with the outer plane of the door body when sliding, thereby ensuring that the door body and the sealing frame are always in contact with each other, further improving the sealing between the door body and the inner frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structure diagram of a fire door sealing structure proposed for the utility model Figure 1 ;

[0017] Figure 2 A three-dimensional structure diagram of a fire door sealing structure proposed for the utility model Figure 2 ;

[0018] Figure 3 A partial structural disassembly diagram of a fire door sealing structure is proposed for the utility model;

[0019] Figure 4 The present invention provides a partial structural disassembly diagram of a door body in a fire door sealing structure.

[0020] Legend: 1. Outer frame; 2. Door body; 3. Inner frame; 4. Rotating plate; 5. Connecting frame; 6. Guide groove; 7. Sealing frame; 8. Linking rod; 9. Slider; 10. Handle; 11. Rocker; 12. Bearing; 13. First rotating seat; 14. Rubber strip; 15. Second rotating seat. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Embodiment 1

[0024] like Figure 1-4 As shown, the utility model provides a fire door sealing structure, including a door body 2 and an inner frame 3, a bearing 12 is rotatably connected at the center position of the door body 2, both ends of the bearing 12 are fixedly connected to a rotating disk 4, the outer wall of the rotating disk 4 is evenly distributed with four first rotating seats 13, the outer wall of the first rotating seat 13 is rotatably connected to a linkage rod 8, one end of the linkage rod 8 is rotatably connected to a second rotating seat 15, the outer wall of the second rotating seat 15 is fixedly connected to a sealing frame 7, the inner wall of the sealing frame 7 is fixedly connected to a slider 9, a guide groove 6 is opened on the surface of the door body 2, the guide groove 6 is slidably connected to the slider 9, and the inner frame 3 is a boss structure which is high in the middle and low at both ends.

[0025] The specific configuration and function of this embodiment are described in detail below. When a fire occurs, after the fire door is completely closed, the temperature of the burning side must be higher than that of the protected side. After the fire is isolated, a temperature difference will be caused on both sides, thereby generating a pressure difference. The pressure difference will also have a certain impact on the sealing of the fire door. In order to ensure that the sealing effect between the door body 2 and the inner frame 3 is not affected by the pressure difference on both sides, a sealing frame 7 that can be telescopic inwards and outwards is set at the periphery of both sides of the door body 2, and the position of the sealing frames 7 on both sides is controlled by a rotating disk 4;

[0026] When the hand-held rocker 11 is rotated, the bearing 12 drives the two rotating disks 4 to rotate at the same angle. The rotating disk 4 pushes the sealing frame 7 to move outward through the linkage rod 8, so that the sealing frames 7 on both sides are buckled on the two sides of the inner frame 3. The cross-section of the door body 2 and the sealing frames 7 on both sides is concave, and the cross-section of the inner frame 3 is convex. The bite between the door body 2 and the inner frame 3 forms a sealing effect on both sides, so that when the door body 2 and the inner frame 3 are closed, no matter which side the fire occurs on, the high pressure formed by the fire can be effectively avoided, thereby avoiding the problem of fire spreading due to leakage caused by pressure difference in the fire door.

[0027] Embodiment 2

[0028] like Figure 3 and Figure 4 As shown, a rocker 11 is fixedly connected to the surface of the rotating disk 4, and the outer wall of the rocker 11 is covered with a heat-insulating cloth. Handles 10 are fixedly connected to both sides of the door body 2. The outer wall of the inner frame 3 is fixedly connected to the outer frame 1. A connecting frame 5 is movably connected between the outer frame 1 and the door body 2. The side wall of the sealing frame 7 is slidably connected to the side wall of the door body 2, and magnets are fixedly connected at the two corners of the sealing frame 7. The outer wall of the door body 2 and the inner wall of the outer frame 1 are fixedly connected with rubber strips 14.

[0029] The effect achieved by the entire embodiment is that, in order to ensure that the door body 2 and the sealing frame 7 always fit each other and improve the sealing between the door body 2 and the inner frame 3, the guide groove 6 is designed to be an inverted T-shape, and at the same time, the slider 9 is set as a truncated cone-shaped slider, and the locking relationship between the slider 9 and the sealing frame 7 is utilized to make the sealing frame 7 always fit the outer plane of the door body 2 when sliding, thereby preventing the overflow of fire and smoke;

[0030] Since it is necessary to reduce the friction between the door body 2 and the inner frame 3 to ensure normal opening and closing of the door, a certain gap is reserved between the door body 2 and the inner frame 3, and a rubber strip 14 is set between the door body 2 and the inner frame 3. The door body 2 and the inner frame 3 are both in a hard position, and the rubber strip 14 is in a soft position. When the two rubber strips 14 are aligned, they will be squeezed and deformed against each other and fill the gap on the outside of the door body 2 to obtain a better smoke-proof effect. Finally, magnets are set at the corners of the sealing frame 7. When the four sealing frames 7 are located on the inner side of the door body 2, the side walls of two adjacent sealing frames 7 fit together, and the magnetic attraction of the magnet is used to ensure that the sealing frames 7 are connected as a whole, thereby avoiding the dispersion of the sealing frames 7 affecting the normal opening and closing between the door body 2 and the inner frame 3.

[0031] The method of use and working principle of the device: First, hold the handle 10 to buckle the door body 2 on the inner frame 3, so that the rubber strip 14 on the door body 2 is connected with the rubber strip 14 on the inner frame 3, and the two rubber strips 14 are squeezed and deformed after being aligned, and fill the gap outside the door body 2;

[0032] Then, the rocker 11 is rotated by hand, and the bearing 12 drives the two rotating disks 4 to rotate. The rotating disk 4 pushes the sealing frame 7 to move outward through the linkage rod 8, so that the sealing frames 7 on both sides extend outward, and the engagement between the door body 2 and the inner frame 3 forms a sealing effect on both sides;

[0033] Finally, when the fire is under control, rotate the rotating disk 4 in the opposite direction, and use the four linkage rods 8 to pull the sealing frame 7 inward so that the sealing frame 7 is aligned with the side wall of the door body 2, and use the side walls of two adjacent sealing frames 7 to fit together, and use the magnetic attraction of the magnet to ensure that the sealing frames 7 are connected as a whole, and finally open the door body 2 from the inner frame 3.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A fire door sealing structure, comprising a door body (2) and an inner frame (3), characterized in that: A bearing (12) is rotatably connected at the center position of the door body (2), and both ends of the bearing (12) are fixedly connected to a rotating disk (4). The outer wall of the rotating disk (4) has four first rotating seats (13) distributed at equal intervals. The outer wall of the first rotating seat (13) is rotatably connected to a linkage rod (8), and one end of the linkage rod (8) is rotatably connected to a second rotating seat (15). The outer wall of the second rotating seat (15) is fixedly connected to a sealing frame (7), and the inner wall of the sealing frame (7) is fixedly connected to a slider (9). A guide groove (6) is provided on the surface of the door body (2), and the guide groove (6) is slidably connected to the slider (9). The inner frame (3) is a boss structure with a high middle and low ends.

2. A fire door sealing structure according to claim 1, characterized in that: A rocker (11) is fixedly connected to the surface of the rotating disk (4), and the outer wall of the rocker (11) is sheathed with heat-insulating fabric.

3. A fire door sealing structure according to claim 1, characterized in that: Handles (10) are fixedly connected to both sides of the door body (2).

4. A fire door sealing structure according to claim 1, characterized in that: The outer side wall of the inner frame (3) is fixedly connected to the outer frame (1).

5. A fire door sealing structure according to claim 4, characterized in that: A connecting frame (5) is movably connected between the outer frame (1) and the door body (2).

6. A fire door sealing structure according to claim 1, characterized in that: The side wall of the sealing frame (7) is slidably connected to the side wall of the door body (2), and magnets are fixedly connected at two corner positions of the sealing frame (7).

7. A fire door sealing structure according to claim 4, characterized in that: The outer wall of the door body (2) and the inner wall of the outer frame (1) are both fixedly connected with a rubber strip (14).

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