Civil air defense door sealing structure

Abstract

This utility model belongs to the technical field of air defense door sealing structure, and discloses an air defense door sealing structure, including a first sealing ring and a second sealing ring. A magnet is provided on the side of the first sealing ring facing the second sealing ring. First inflatable airbags are provided on both sides of the inner wall of the first sealing ring, and second inflatable airbags are provided on the other two sides of the inner wall of the first sealing ring. An iron sheet is provided on the second sealing ring corresponding to the magnet. A fixing block is provided on the side of the second sealing ring facing the first sealing ring. This device, through the combined use of the first and second inflatable airbags, can effectively reduce the wear of the first and second sealing rings, while improving the sealing performance of the air defense door. The combined use of the magnet and the iron sheet allows for convenient closing of the air defense door, while also helping to improve its sealing performance.

Description

Technical Field

[0001] This utility model belongs to the technical field of air defense door sealing structure, and more specifically, it relates to an air defense door sealing structure. Background Technology

[0002] Civil defense doors are core protective equipment in civil air defense projects, installed at entrances and exits. They are typically composed of heavy steel door panels and sturdy door frames, possessing extremely high airtightness, blast resistance, and load-bearing capacity. Civil defense doors are classified according to their location as protective doors for air-raid shelters and airtight protective doors for entrances and exits, and according to their opening and closing methods as various types such as flat, arched, and movable threshold doors, serving as a crucial barrier to protect life and property.

[0003] To ensure the performance of air defense doors, ensuring their airtightness is of utmost importance. Most current air defense door sealing structures rely on the adsorption and interlocking between sealing rings to provide sealing performance. During long-term opening and closing, the sealing rings themselves will wear down, causing the adsorption force of the interlocking to decrease, thus reducing the sealing performance of the air defense door.

[0004] Therefore, in view of this, we will study and improve the existing structure and its shortcomings to provide a sealing structure for air defense doors, in order to achieve a more practical value. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a sealing structure for a civil defense door, which is achieved by the following specific technical means:

[0006] The air-raid shelter door sealing structure includes a first sealing ring and a second sealing ring. A magnet is provided on the side of the first sealing ring facing the second sealing ring. First inflatable airbags are provided on both sides of the inner wall of the first sealing ring. Second inflatable airbags are provided on the other two sides of the inner wall of the first sealing ring. An iron sheet is provided on the second sealing ring corresponding to the magnet. A fixing block is provided on the side of the second sealing ring facing the first sealing ring. The fixing block is located between a pair of first inflatable airbags and a pair of second inflatable airbags.

[0007] Furthermore, both the first and second sealing rings are made of fluororubber.

[0008] Furthermore, the airtight layer of the first and second inflatable airbags is made of butyl rubber.

[0009] Furthermore, the first sealing ring has a mounting groove on the side facing the second sealing ring, and the magnet block is located in the mounting groove.

[0010] Furthermore, both the iron sheet and the magnet block are covered with a waterproof film on their outer sides.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] In this invention, the combined use of the first and second inflatable airbags effectively reduces the wear of the first and second sealing rings, while improving the sealing performance of the air-raid shelter door. The combined use of the magnetic block and the iron sheet facilitates the closing of the air-raid shelter door, while also further enhancing its sealing performance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the back of the first sealing ring of this utility model.

[0015] Figure 3 This is a front view of the first sealing ring of this utility model.

[0016] Figure 4 This is a cross-sectional schematic diagram of the first sealing ring of this utility model.

[0017] Figure 5 This is a schematic diagram of the overall structure of the second sealing ring of this utility model.

[0018] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0019] 1. First sealing ring; 2. Second sealing ring; 3. Magnet block; 4. First inflatable airbag; 5. Second inflatable airbag; 6. Iron sheet; 7. Fixing block; 8. Mounting groove. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example:

[0024] As attached Figure 1 To be continued Figure 5 As shown:

[0025] This utility model provides a sealing structure for a civil defense door, including a first sealing ring 1 and a second sealing ring 2. A magnet block 3 is provided on the side of the first sealing ring 1 facing the second sealing ring 2. A first inflatable airbag 4 is provided on both sides of the inner wall of the first sealing ring 1. A second inflatable airbag 5 is provided on the other two sides of the inner wall of the first sealing ring 1. An iron sheet 6 is provided on the second sealing ring 2 corresponding to the magnet block 3. A fixing block 7 is provided on the side of the second sealing ring 2 facing the first sealing ring 1. The fixing block 7 is located between a pair of first inflatable airbags 4 and a pair of second inflatable airbags 5.

[0026] The first sealing ring 1 and the second sealing ring 2 are both made of fluororubber, which is resistant to high temperature and chemical corrosion.

[0027] Among them, the airtight layer of the first inflatable airbag 4 and the second inflatable airbag 5 is made of butyl rubber. Butyl rubber can effectively block gas penetration and maintain stable pressure.

[0028] The first sealing ring 1 has an installation groove 8 on the side facing the second sealing ring 2, and the magnet block 3 is located in the installation groove 8.

[0029] Both the iron sheet 6 and the magnet block 3 are covered with a waterproof membrane. The waterproof membrane can effectively improve the waterproof performance of the entire sealing structure and effectively prevent the iron sheet from rusting.

[0030] The working principle of this embodiment is as follows: Before use, ensure that the surface of the door frame and door leaf of the air-raid shelter door is clean and free of debris. Install the first sealing ring 1 and the second sealing ring 2 in the corresponding grooves of the door leaf and the door frame, respectively. During installation, pay attention to the fact that the first inflatable airbag 4 and the second inflatable airbag 5 inside the first sealing ring 1 should correspond to the fixing block 7, and at the same time ensure that the position of the magnet block 3 on the first sealing ring 1 and the iron piece 6 on the second sealing ring 2 are aligned to achieve magnetic pre-fixing. Slowly inflate the first inflatable airbag 4 and the second inflatable airbag 5. Utilize the limiting effect of the fixing block 7 between the pair of first inflatable airbags 4 and the pair of second inflatable airbags 5 to ensure that the first inflatable airbags 4 and the second inflatable airbags 5 will not shift after expansion.

[0031] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A sealing structure of a civil defense door, comprising a first sealing ring (1) and a second sealing ring (2), characterized in that: The first sealing ring (1) has a magnet block (3) on the side facing the second sealing ring (2). The first sealing ring (1) has a first inflatable airbag (4) on both sides of its inner wall. The second sealing ring (1) has a second inflatable airbag (5) on the other two sides of its inner wall. The second sealing ring (2) has an iron sheet (6) corresponding to the magnet block (3). The second sealing ring (2) has a fixing block (7) on the side facing the first sealing ring (1). The fixing block (7) is located between a pair of first inflatable airbags (4) and a pair of second inflatable airbags (5).

2. The sealing structure of the civil defense door according to claim 1, characterized in that: Both the first sealing ring (1) and the second sealing ring (2) are made of fluororubber.

3. The sealing structure of the civil defense door according to claim 1, characterized in that: The airtight layer of the first inflatable airbag (4) and the second inflatable airbag (5) is made of butyl rubber.

4. The air-raid shelter door sealing structure as described in claim 1, characterized in that: The first sealing ring (1) has an installation groove (8) on the side facing the second sealing ring (2), and the magnet block (3) is located in the installation groove (8).

5. The air-raid shelter door sealing structure as described in claim 1, characterized in that: Both the iron sheet (6) and the magnet block (3) are covered with a waterproof film on their outer sides.

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