Fireproof door sealing assembly

Abstract

The utility model discloses a fireproof door sealing assembly which comprises a door frame body, a door leaf body is hinged to the inner side of the door frame body, a first sealing mechanism is arranged on the peripheral side of the door leaf body, and a second sealing mechanism is arranged between the side, facing the fire, of the door leaf body and the door frame body. The second sealing mechanism and the first sealing mechanism form a double-layer sealing layer used for sealing the door frame body and the door leaf body. The sealing structure is reasonable in design structure, the second sealing mechanisms are additionally arranged on the door frame body and the door leaf body, multiple sealing layers are formed by the second sealing mechanisms and the first sealing mechanisms, the sealing effect is improved, meanwhile, two sets of sealing structures which are connected in an inserted mode are adopted in the second sealing mechanisms, so that a sealing gap forms a reciprocating up-and-down bending curve path, and the sealing effect is improved. The sealing effect and the anti-impact effect of the sealing assembly are improved, and the problem that the sealing effect and the anti-impact effect of an existing fireproof door are poor due to the fact that a single-layer sealing structure and a smooth sealing gap of the sealing assembly are arranged on the existing fireproof door is solved.

Description

Technical Field

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

[0002] A fire door is a door that can meet the requirements of fire resistance, stability, integrity and thermal insulation performance within a certain period of time. It is generally installed in closed evacuation stairs, closed elevator rooms, cable shafts, smoke exhaust ducts, garbage chutes and other locations. In addition to having the functions of ordinary doors, it can prevent the spread of fire and smoke in the event of a fire. It mainly consists of door frames, door leaves, fireproof door closers and sealing components.

[0003] Common fire door sealing assemblies are usually composed of sealing strips and some elastic extrusion components, which are generally installed on the side of the door leaf and have a single-layer structure design. For example, a fire door sealing assembly with publication number CN217300384U includes a second sealing strip sleeved on the peripheral side of the door panel and a groove arranged on the inner wall of the door frame. After closing, the moving assembly pushes the second sealing strip into the interior of the groove to achieve sealing between the door frame and the door leaf. However, in actual use, in order to utilize the cross-section of the second sealing strip to drive the movement of the second sealing strip, the depth of the groove is usually shallow, and its sealing gap is close to a straight line, which is the same as the traditional smooth seal. At the same time, the single-layer sealing design formed by the second sealing strip and the groove is very easy to pierce the gap between the second sealing strip and the groove when high-pressure phenomena such as explosions occur at the fire scene, causing smoke to leak along the gap, resulting in poor sealing effect. Utility Model Content

[0004] The utility model aims to make up for the deficiencies of the prior art and provides a fire door sealing assembly.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A fireproof door sealing assembly comprises a door frame body, a door leaf body is hingedly connected to the inner side of the door frame body, a first sealing mechanism is arranged on the peripheral side of the door leaf body, a second sealing mechanism is arranged between the side of the door leaf body facing the fire surface and the door frame body, and the second sealing mechanism and the first sealing mechanism form a double-layer sealing layer for sealing the door frame body and the door leaf body;

[0007] The second sealing mechanism includes two first sealing gaskets, which are respectively installed on the door frame body and the door leaf body. A raised sealing structure is provided on the opposite side surfaces of the two first sealing gaskets, and the two groups of raised sealing structures are staggered and plugged into each other so that the sealing gap is tortuous and bends to increase the resistance to flow between the two sealing structures.

[0008] Furthermore, the sealing structure includes a plurality of second sealing gaskets, which are installed on the first sealing gasket and located on a side where the two first sealing gaskets are close to each other, and the two groups of the second sealing gaskets of the two sealing structures are staggered with each other, and the second sealing gaskets are connected to third sealing gaskets on both sides along the side directions of the corresponding first sealing gaskets, and the third sealing gaskets are connected to the four corners of the first sealing gasket, and the two groups of the third sealing gaskets corresponding to the two sealing structures are staggered with each other.

[0009] Furthermore, a groove is provided in the second sealing gasket, a supporting gasket is provided in the groove, and the supporting gasket is connected to the first sealing gasket.

[0010] Furthermore, a cavity is opened in the door frame body, and a push plate is slidably connected in the cavity. The side of the push plate close to the door leaf body is connected to one of the first sealing gaskets. A driving mechanism is provided on the push plate for driving the push plate to slide in the cavity so that the two groups of the sealing structures are inserted into each other.

[0011] Furthermore, a channel is provided in the door frame body, one end of the channel is communicated with the interior of the cavity, and the other end of the channel is communicated with the interior of the heat dissipation tube, and the heat dissipation tube is connected to the door frame body;

[0012] The driving mechanism includes a piston rod, one end of the bottom of the piston rod is slidably connected to the inner wall of the heat dissipation tube, and a driving device is installed on the top of the piston rod. The driving device is connected to the door frame body so that the driving device drives the piston rod to perform piston motion inside the heat dissipation tube.

[0013] Furthermore, the cavity, the channel and the heat dissipation tube are filled with heat transfer oil, the heat dissipation tube and the driving device are both located on the back-to-fire side of the door frame body, and the heat dissipation tube is provided with protruding heat dissipation fins.

[0014] Compared with the prior art, the fire door sealing assembly has the following beneficial effects:

[0015] 1. The utility model increases the sealing effect by adding a second sealing mechanism to the door frame body and the door leaf body to form multiple sealing layers with the first sealing mechanism. At the same time, the second sealing mechanism uses two sets of sealing structures that are plugged into each other so that the sealing gap forms a reciprocating up and down bending path, thereby improving the sealing effect and impact resistance of the sealing component, and solving the problem that the single-layer sealing structure of the sealing component on the existing fire door and the relatively smooth sealing gap lead to poor sealing effect and impact resistance.

[0016] 2. The utility model provides heat transfer oil through the cavity, the channel and the inside of the heat dissipation tube, so that heat is transferred through the heat transfer oil, and the heat dissipation is dissipated to the outside with the help of the heat dissipation tube itself and the heat dissipation fins on the surface, so as to facilitate the local heat dissipation of the second sealing mechanism on the fire door and improve the service life of the second sealing structure at high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a cross-sectional view of the second sealing gasket in the utility model;

[0019] Figure 3 It is a partial schematic diagram of the first sealing gasket in the utility model;

[0020] Figure 4 It is a cross-sectional view of the main body of the door leaf in the utility model;

[0021] Figure 5 For the utility model Figure 4 A schematic diagram of the enlarged structure.

[0022] In the figure: 1. door frame body; 2. door leaf body; 3. second sealing mechanism; 301. first sealing gasket; 302. supporting gasket; 303. second sealing gasket; 304. third sealing gasket; 4. pushing plate; 5. first sealing mechanism; 6. cavity; 7. channel; 8. heat sink; 9. piston rod; 10. driving device. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-5As shown, the utility model provides a technical solution: a fire door sealing assembly, comprising a door frame body 1, a door leaf body 2 is hingedly connected to the inner side of the door frame body 1, a first sealing mechanism 5 is arranged on the periphery of the door leaf body 2, and the first sealing mechanism 5 is arranged on the periphery of the door leaf body 2 and can be sealed in an original sealing manner, such as by fixing a sealing strip on the door leaf body 2, so that the door leaf body 2 just supports the door frame body 1 after closing, and a second sealing mechanism 3 is arranged between the fire surface side of the door leaf body 2 and the door frame body 1, and the second sealing mechanism 3 and the first sealing mechanism 5 form a double-layer sealing layer for sealing the door frame body 1 and the door leaf body 2, thereby improving the sealing between the door frame body 1 and the door leaf body 2;

[0025] The second sealing mechanism 3 includes two first sealing gaskets 301, and the two first sealing gaskets 301 are respectively installed on the door frame body 1 and the door leaf body 2. The two first sealing gaskets 301 are both provided with a raised sealing structure, and the two groups of raised sealing structures are staggered and plugged into each other, so that the sealing gap is bent to increase the resistance to flow between the two sealing structures. When in use, the door leaf body 2 is first closed, and then the first sealing gasket 301 on the door frame body 1 is pushed to move, and the first sealing gasket 301 on the door frame body 1 then plugs the two groups of sealing structures into each other. Since the gaps between the two groups of sealing structures are adapted, the sealing gap is bent to increase the resistance to flow. At the same time, the sealing structures that are plugged into and engaged with each other increase the impact of explosions to avoid breakdown that affects the sealing effect.

[0026] The sealing structure includes a plurality of second sealing pads 303, which are installed on the first sealing pad 301 and are located on a side where two of the first sealing pads 301 are close to each other. The two groups of the second sealing pads 303 of the two sealing structures are staggered with each other. The second sealing pads 303 are connected to third sealing pads 304 on both sides along the side direction of the corresponding first sealing pad 301. The third sealing pad 304 is connected to the four corners of the first sealing pad 301. The two groups of the third sealing pads 304 corresponding to the two sealing structures are staggered with each other. The first sealing pad 301 and the second sealing pad 303 are staggered with each other. 03 and the third sealing gasket 304 are fixedly connected, and the outermost and innermost of the adjacent multiple second sealing gaskets 303 are respectively fixedly connected to the corresponding third sealing gasket 304, so that the corresponding number of third sealing gaskets 304 and second sealing gaskets 303 can be used to facilitate the corresponding connection in sequence, and the first sealing gasket 301, the second sealing gasket 303 and the third sealing gasket 304 are all made of high-temperature resistant rubber material, and the gap between two adjacent second sealing gaskets 303 on the same first sealing gasket 301 is adapted to the thickness of the second sealing gasket 303 on the corresponding other first sealing gasket 301, so as to maintain tightness after insertion.

[0027] A groove is provided in the second sealing gasket 303, and a supporting gasket 302 is provided in the groove. The supporting gasket 302 is connected to the first sealing gasket 301. The supporting gasket 302 and the first sealing gasket 301 are fixedly connected. The supporting gasket 302 is made of high-temperature resistant rubber, and its hardness is greater than the rubber hardness of the second sealing gasket 303, which has the effect of shaping the second sealing gasket 303 to facilitate the mutual insertion of the sealing structures.

[0028] A cavity 6 is opened in the door frame body 1, and a push plate 4 is slidably connected in the cavity 6. The side of the push plate 4 close to the door leaf body 2 is connected to one of the first sealing gaskets 301. A driving mechanism is provided on the push plate 4, which is used to drive the push plate 4 to slide in the cavity 6 so that the two sets of sealing structures are inserted into each other. The shapes of the cavity 6 and the push plate 4 are adapted to each other and are annular as a whole. The annular inner and outer walls of the push plate 4 are in sliding contact with the two opposite side walls of the cavity 6 and maintain a sealing effect, so as to facilitate the control of the push plate 4.

[0029] A channel 7 is provided in the door frame body 1, one end of the channel 7 is communicated with the interior of the cavity 6, and the other end of the channel 7 is communicated with the interior of a heat dissipation tube 8, and the heat dissipation tube 8 is connected to the door frame body 1;

[0030] The driving mechanism includes a piston rod 9, one end of the bottom of the piston rod 9 is slidably connected to the inner wall of the heat dissipation tube 8, and a driving device 10 is installed on the top of the piston rod 9. The driving device 10 is connected to the door frame body 1 so that the driving device 10 drives the piston rod 9 to perform piston movement inside the heat dissipation tube 8. The output end of the driving device 10 is fixedly connected to the piston rod 9. The driving device 10 can adopt an electric telescopic push rod or a combination of an electric motor and a screw rod. A sealing ring is installed at the position where the piston rod 9 is in contact with the inside of the heat dissipation tube 8. When in use, the up and down movement of the piston rod 9 causes the change in the internal volume of the heat dissipation tube 8 below the piston rod 9, and then the push plate 4 on one side is driven to reciprocate through the pressure change.

[0031] The cavity 6, the channel 7 and the heat dissipation tube 8 are filled with heat transfer oil. The heat dissipation tube 8 and the driving device 10 are both located on the back-to-fire side of the door frame body 1. The heat dissipation tube 8 is provided with protruding heat dissipation fins. The heat transfer oil is in contact with the push plate 4 and the heat dissipation tube 8 respectively, so that the heat on one side of the push plate 4 is transferred to the heat dissipation tube 8 through the heat transfer oil, and the heat is dissipated through the heat dissipation fins on the heat dissipation tube 8, so as to dissipate the heat locally and improve the protection effect of the second sealing mechanism 3.

[0032] First, the door leaf body 2 and the door frame body 1 are closed, and a sealing layer is formed around the door leaf body 2 and the door frame body 1 through the first sealing mechanism 5, and then the driving device 10 is controlled to work, and the driving device 10 drives the piston rod 9 to move downward, so that the piston rod 9 further pushes the heat transfer oil inside the heat dissipation tube 8 to move, so that the piston rod 9 transmits the thrust to the push plate 4 through the heat transfer oil, drives the push plate 4 to slide inside the cavity 6, and then drives the first sealing gasket 301 on the push plate 4 to move toward the first sealing gasket 301 on the door leaf body 2, so that the second sealing gasket 303 on the moving first sealing gasket 301 is gradually inserted between the second sealing gasket 303 in the non-moving door leaf body 2, and then The moving second sealing gasket 303 gradually extends into until it presses against the stationary first sealing gasket 301, so that the second sealing mechanism 3 forms a second sealing layer between the door leaf body 2 and the door frame body 1, and at the same time bends the sealing gap of the second sealing layer to improve the sealing between the door leaf body 2 and the door frame body 1. The first sealing gasket 301 of the second layer contacts with the heat transfer oil through the pushing plate 4, and the heat transfer oil is connected to the back-fire surface of the door frame body 1 through the channel 7 and the heat dissipation tube 8, so as to facilitate the heat transfer from the first sealing gasket 301 and the pushing plate 4 to the outside, dissipate heat and cool the local area, and improve the service life of the first sealing gasket 301, the second sealing gasket 303 and the third sealing gasket 304 at high temperatures.

Claims

1. A fire door sealing assembly, comprising a door frame body (1), a door leaf body (2) being hingedly connected to the inner side of the door frame body (1), and a first sealing mechanism (5) being arranged on the peripheral side of the door leaf body (2), characterized in that: A second sealing mechanism (3) is provided between the side of the door leaf body (2) facing the fire surface and the door frame body (1), and the second sealing mechanism (3) and the first sealing mechanism (5) form a double sealing layer for sealing the door frame body (1) and the door leaf body (2); The second sealing mechanism (3) comprises two first sealing gaskets (301), the two first sealing gaskets (301) being respectively mounted on the door frame body (1) and the door leaf body (2), and a raised sealing structure is arranged on opposite side surfaces of the two first sealing gaskets (301), and the two groups of raised sealing structures are staggered and plugged into each other so that the sealing gap is bent to increase the resistance to flow between the two sealing structures.

2. The fire door sealing assembly according to claim 1, characterized in that: The sealing structure comprises a plurality of second sealing gaskets (303), wherein the plurality of second sealing gaskets (303) are installed on the first sealing gasket (301) and are located on a side where the two first sealing gaskets (301) are close to each other, and the two groups of the second sealing gaskets (303) of the two sealing structures are staggered with each other, and the second sealing gaskets (303) are connected to third sealing gaskets (304) on both sides along the side direction of the corresponding first sealing gasket (301), and the third sealing gasket (304) is connected to the four corners of the first sealing gasket (301), and the two groups of the third sealing gaskets (304) corresponding to the two sealing structures are staggered with each other.

3. The fire door sealing assembly according to claim 2, characterized in that: A groove is provided in the second sealing gasket (303), a supporting gasket (302) is arranged in the groove, and the supporting gasket (302) is connected to the first sealing gasket (301).

4. The fire door sealing assembly according to claim 1, characterized in that: A cavity (6) is provided in the door frame body (1), a push plate (4) is slidably connected in the cavity (6), the push plate (4) is connected to one of the first sealing gaskets (301) on the side close to the door leaf body (2), and a driving mechanism is provided on the push plate (4) for driving the push plate (4) to slide in the cavity (6) so that the two groups of the sealing structures are inserted into each other.

5. The fire door sealing assembly according to claim 4, characterized in that: A channel (7) is provided in the door frame body (1), one end of the channel (7) is communicated with the interior of the cavity (6), and the other end of the channel (7) is communicated with the interior of a heat dissipation tube (8), and the heat dissipation tube (8) is connected to the door frame body (1); The driving mechanism comprises a piston rod (9), one end of the bottom of the piston rod (9) is slidably connected to the inner wall of the heat dissipation tube (8), and a driving device (10) is installed on the top of the piston rod (9). The driving device (10) is connected to the door frame body (1) so that the driving device (10) drives the piston rod (9) to perform piston movement inside the heat dissipation tube (8).

6. The fire door sealing assembly according to claim 5, characterized in that: The cavity (6), the channel (7) and the heat dissipation tube (8) are filled with heat-conducting oil; the heat dissipation tube (8) and the driving device (10) are both located on the back-of-fire surface of the door frame body (1); and the heat dissipation tube (8) is provided with protruding heat dissipation fins.

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