Smoke-isolating fireproof door for civil air defense engineering

Abstract

The utility model relates to the technical field of civil air defense engineering, and discloses a smoke-isolating fireproof door for civil air defense engineering, which comprises a door frame, a fireproof door mechanism is arranged on the inner side of the door frame, the fireproof door mechanism comprises a fireproof door body, the fireproof door body is clamped with the inner ring of the door frame, and a sealing square frame is fixedly arranged on the edge of the front end of the fireproof door body. A limiting sealing mechanism is arranged on the front side of an inner ring of the door frame and comprises a reinforcing frame, the outer wall of the reinforcing frame is fixedly connected with the inner ring of the door frame, and a sealing clamping groove is formed in the rear side of the reinforcing frame. Through mutual cooperation of the limiting sealing mechanism, the sealing square frame, the inner sealing ring and the outer sealing ring, after the fireproof door body is closed and clamped into the door frame, the sealing performance can be improved through the limiting sealing mechanism, meanwhile, heat is prevented from directly passing through a gap between the door frame and the fireproof door body, and the sealing rings are prevented from being damaged by high temperature; the service life of the sealing ring is prolonged; the heat insulation effect of the whole fireproof door is improved.

Description

Technical Field

[0001] This utility model relates to the field of civil defense engineering technology, specifically to a smoke-proof and fireproof door for civil defense engineering. Background Technology

[0002] Civil defense doors are the entrances and exits of civil defense projects. They are clearly categorized, including ordinary single and double-leaf protective airtight doors and airtight doors, as well as single and double-leaf protective airtight doors and airtight doors with movable thresholds, among other types of civil defense equipment. Civil defense is also known as public defense, so civil defense doors belong to civil defense protection equipment. In peacetime, they are typically used in underground parking garages or underground shopping malls. In the event of a fire or war, they can quickly seal the entrance to the civil defense project, achieving a protective function. However, existing technologies have the following problems:

[0003] Chinese patent document CN221096337U discloses a smoke-proof and fireproof door for civil defense projects, including a door frame, a door panel at the center of the door frame, two hinges fixedly connected between the door panel and the door frame, a mechanical turntable locking mechanism on the door panel, a handle fixedly connected to the door panel, and a sealing assembly between the door frame and the door panel. This invention, through the sealing assembly, achieves good sealing between the door panel and the door frame, while mitigating the impact force of the door panel on the door frame when the door panel is closed, reducing noise and protecting both the door frame and the door panel. After closing, the first and second sealing strips achieve high sealing performance, effectively isolating smoke.

[0004] Although the aforementioned literature describes the use of a first and second sealing strip for sealing, the second sealing strip around the door panel does not completely cover the door panel. This means that when there is a large amount of smoke, it may pass through the gaps at both ends of the second sealing strip, affecting the smoke isolation effect. At the same time, although the door panel in the aforementioned literature has good effects in isolating air temperature and preventing penetration, the second sealing strip in the gap between the door panel and the door frame lacks these effects. As a result, in the event of a fire, the high temperature will cause the second sealing strip to soften and deform, allowing high temperature to be transmitted through the gap between the door panel and the doorway, affecting the heat insulation effect of the fire door. Utility Model Content

[0005] This utility model provides a smoke-proof and fireproof door for civil defense projects to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A smoke-proof and fireproof door for civil defense projects includes a door frame. A fireproof door mechanism is provided on the inner side of the door frame. The fireproof door mechanism includes a fireproof door body. The fireproof door body is engaged with the inner ring of the door frame. A sealing square frame is fixedly installed on the front edge of the fireproof door body. A limiting sealing mechanism is provided on the front side of the inner ring of the door frame. The limiting sealing mechanism includes a reinforcing frame. The outer wall of the reinforcing frame is fixedly connected to the inner ring of the door frame. A sealing groove is provided on the rear side of the reinforcing frame. The sealing square frame is engaged with the sealing groove. A first sealing rubber ring is fixedly bonded to both the inner and outer sides of the inner wall of the sealing groove. A heat insulation layer is fixedly installed on the outer wall of the reinforcing frame. A fireproof layer is fixedly installed on the outer wall of the heat insulation layer.

[0008] A further improvement of this utility model is that a mechanical turntable locking mechanism is provided at the front center of the fire door body, and a door handle is provided on the front left side of the fire door body.

[0009] A further improvement of this utility model is that: the inner ring of the sealing frame is provided with an inner sealing ring, the outer ring of the sealing frame is provided with an outer sealing ring, both the inner and outer sealing rings are fixedly bonded to the front side of the fire door body, and the front sides of both the inner and outer sealing rings are attached to the rear side of the reinforcing frame.

[0010] A further improvement of this utility model is that: a second sealing ring is fixedly bonded to the inner ring of the door frame, and a third sealing ring is fixedly bonded to the outer wall of the fire door body; after the fire door body is engaged with the inner ring of the door frame, the second sealing ring is located in front of the third sealing ring.

[0011] A further improvement of this utility model is that a hinge is fixedly installed on the right rear end of the fire door body, and the fire door body is hinged to the rear end of the door frame using the hinge.

[0012] A further improvement of this utility model is that: the reinforcing frame is made of titanium alloy, the heat insulation layer is made of rock wool board, and the fireproof layer is made of a steel outer wall covered with silicate board.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] 1. This utility model provides a smoke-proof and fireproof door for civil defense projects. Through the cooperation between the limiting sealing mechanism, the sealing frame, the inner sealing ring, and the outer sealing ring, the fireproof door body can be closed and locked into the door frame. The limiting sealing mechanism can improve the sealing performance while preventing heat from passing directly through the gap between the door frame and the fireproof door body, preventing the sealing ring from being damaged by high temperature, improving the service life of the sealing ring and the overall heat insulation effect of the fireproof door.

[0015] 2. This utility model provides a smoke-proof and fireproof door for civil defense projects. Through the cooperation between the fireproof door body, the second sealing ring, and the third sealing ring, the closed fireproof door body can be effectively sealed by the double wrapping of the second and third sealing rings, completely blocking the passage of smoke and improving the smoke-proof effect of the fireproof door. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the fire door mechanism of this utility model.

[0018] Figure 3 This is a schematic diagram of the limiting and sealing mechanism of the present invention.

[0019] Figure 4 This utility model Figure 2 Enlarged schematic diagram of point A in the middle;

[0020] Figure 5 This is a cross-sectional schematic diagram of the door frame and fire door body of the present utility model.

[0021] In the diagram: 1. Door frame; 11. Limiting and sealing mechanism; 111. Reinforcing frame; 112. Sealing groove; 113. First sealing ring; 114. Heat insulation layer; 115. Fireproof layer; 12. Second sealing ring; 2. Fire door mechanism; 21. Fire door body; 211. Inner sealing ring; 212. Outer sealing ring; 213. Third sealing ring; 214. Hinge; 22. Mechanical turntable locking mechanism; 23. Door handle; 24. Sealing frame. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figure 1 , Figure 2 , Figure 3As shown, this utility model provides a smoke-proof and fireproof door for civil defense projects, including a door frame 1. A fireproof door mechanism 2 is provided on the inner side of the door frame 1. The fireproof door mechanism 2 includes a fireproof door body 21, which is engaged with the inner ring of the door frame 1. A sealing square frame 24 is fixedly installed on the front edge of the fireproof door body 21. A limiting sealing mechanism 11 is provided on the front side of the inner ring of the door frame 1. The limiting sealing mechanism 11 includes a reinforcing frame 111, the outer wall of which is fixedly connected to the inner ring of the door frame 1. A sealing groove 112 is provided on the rear side of the reinforcing frame 111, and the sealing square frame 24 is engaged with the sealing groove 112. The inner and outer sides of the inner wall of 112 are fixedly bonded with the first sealing ring 113. The outer wall of the reinforcing frame 111 is fixedly installed with the heat insulation layer 114. The outer wall of the heat insulation layer 114 is fixedly installed with the fireproof layer 115. The reinforcing frame 111 is made of titanium alloy, the heat insulation layer 114 is made of rock wool board, and the fireproof layer 115 is made of steel with silicate board covering the outer wall. A mechanical turntable locking mechanism 22 is set at the center of the front end of the fire door body 21. A door handle 23 is set on the left side of the front end of the fire door body 21. The overall material of the fire door body 21 and the mechanical turntable locking mechanism 22 are the existing technology of the fire door. They will not be described in detail here.

[0024] When closing the fire door body 21 during daily use, the door handle 23 can be used to rotate and engage the fire door body 21 with the inner ring of the door frame 1, and the mechanical turntable locking mechanism 22 can be used to lock it. When the fire door body 21 is engaged with the inner ring of the door frame 1, the sealing square frame 24 on its front side will engage with the sealing groove 112 opened in the reinforcing frame 111. The sealing performance can be improved by pressing the inner and outer sides of the sealing square frame 24 with two first sealing rubber rings 113. The reinforcing frame 111 made of titanium alloy can improve the overall strength. The fireproof layer 115 made of silicate board covering the outer wall of the steel can effectively block open flames. The heat generated by the fire source can also be blocked by the heat insulation layer 114 made of rock wool board, so that the first sealing rubber ring 113 in the sealing groove 112 always maintains good performance and avoids high temperature damage that affects the sealing performance.

[0025] like Figure 4 As shown, the inner ring of the sealing frame 24 is provided with an inner sealing ring 211, and the outer ring of the sealing frame 24 is provided with an outer sealing ring 212. Both the inner sealing ring 211 and the outer sealing ring 212 are fixedly bonded to the front side of the fire door body 21, and the front sides of both the inner sealing ring 211 and the outer sealing ring 212 are attached to the rear side of the reinforcing frame 111.

[0026] After the sealing frame 24 is inserted into the sealing groove 112, the inner sealing ring 211 and the outer sealing ring 212 on its inner and outer sides will also fit tightly against the back of the reinforcing frame 111, further improving the sealing between the reinforcing frame 111 and the fire door body 21, and effectively preventing smoke from flowing out from the gap between the fire door body 21 and the door frame 1.

[0027] like Figure 5 As shown, a second sealing ring 12 is fixedly bonded to the inner ring of the door frame 1, and a third sealing ring 213 is fixedly bonded to the outer wall of the fire door body 21. After the fire door body 21 is engaged with the inner ring of the door frame 1, the second sealing ring 12 is located in front of the third sealing ring 213. A hinge 214 is fixedly installed on the right rear end of the fire door body 21, and the fire door body 21 is hinged to the rear end of the door frame 1 using the hinge 214.

[0028] When the fire door body 21 is closed by rotating the hinge 214, the fire door body 21 can further improve the sealing between the inner ring of the door frame 1 and the fire door body 21 through the double seal formed by the second sealing ring 12 on the inner ring of the door frame 1 and the third sealing ring 213 on the outer wall of the fire door body 21. The fully enclosed design effectively prevents smoke leakage. At the same time, the second sealing ring 12 and the third sealing ring 213 are both located behind the overall limiting sealing mechanism 11. After the fire door body 21 is closed, the overall limiting sealing mechanism 11 can also be used for heat insulation to prevent high temperature from affecting its service life.

[0029] The working principle of the smoke-proof and fireproof door in this civil defense project will be explained in detail below.

[0030] like Figure 1-5As shown, when closing the fire door body 21 during daily use, the door handle 23 can be used to rotate and engage the fire door body 21 with the inner ring of the door frame 1, and it can be locked by means of the mechanical turntable locking mechanism 22. When the fire door body 21 is engaged with the inner ring of the door frame 1, its front sealing square frame 24 will engage with the sealing groove 112 opened in the reinforcing frame 111. The sealing performance can be improved by the two first sealing rubber rings 113 pressing the inner and outer sides of the sealing square frame 24. The reinforcing frame 111 made of titanium alloy can improve the overall strength. The fireproof layer 115 made of silicate board covering the steel outer wall can effectively block open flames, and the heat generated by the fire source will also be blocked by the heat insulation layer 114 made of rock wool board. Thus, the first sealing rubber rings 113 in the sealing groove 112 always maintain good performance and avoid high temperature damage affecting the sealing performance. At the same time, after engaging, the inner sealing rings 211 and outer sealing rings 212 on the inner and outer sides of the sealing square frame 24 also It will fit tightly against the rear side of the reinforcing frame 111, further improving the sealing between the reinforcing frame 111 and the fire door body 21, effectively preventing smoke from flowing out from the gap between the fire door body 21 and the door frame 1. The overall material of the fire door body 21 and the mechanical turntable locking mechanism 22 are existing technologies of fire doors, which will not be elaborated here. When the fire door body 21 is closed by rotating the hinge 214, the fire door body 21 can further improve the sealing between the inner ring of the door frame 1 and the fire door body 21 through the double seal composed of the second sealing ring 12 of the inner ring of the door frame 1 and the third sealing ring 213 of the outer wall of the fire door body 21. The fully enclosed design effectively prevents smoke leakage. At the same time, the second sealing ring 12 and the third sealing ring 213 are both located behind the overall limiting sealing mechanism 11. After the fire door body 21 is closed, the overall limiting sealing mechanism 11 can also be used for heat insulation to prevent high temperature from affecting its service life.

[0031] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A smoke-proof and fireproof door for civil defense projects, comprising a door frame (1), characterized in that: A fire door mechanism (2) is provided on the inner side of the door frame (1). The fire door mechanism (2) includes a fire door body (21). The fire door body (21) is engaged with the inner ring of the door frame (1). A sealing frame (24) is fixedly installed on the front edge of the fire door body (21). A limiting sealing mechanism (11) is provided on the front side of the inner ring of the door frame (1). The limiting sealing mechanism (11) includes a reinforcing frame (111). The outer wall of the reinforcing frame (1) is fixedly connected to the inner ring of the door frame (1). A sealing groove (112) is provided on the rear side of the reinforcing frame (111). The sealing square frame (24) is engaged with the sealing groove (112). The inner and outer sides of the inner wall of the sealing groove (112) are fixedly bonded with a first sealing ring (113). A heat insulation layer (114) is fixedly installed on the outer wall of the reinforcing frame (111). A fireproof layer (115) is fixedly installed on the outer wall of the heat insulation layer (114).

2. The smoke-proof and fireproof door for civil defense projects according to claim 1, characterized in that: A mechanical turntable locking mechanism (22) is provided at the center of the front end of the fire door body (21), and a door handle (23) is provided on the left side of the front end of the fire door body (21).

3. The smoke-proof and fireproof door for civil defense projects according to claim 1, characterized in that: The inner ring of the sealing frame (24) is provided with an inner sealing ring (211), and the outer ring of the sealing frame (24) is provided with an outer sealing ring (212). The inner sealing ring (211) and the outer sealing ring (212) are both fixedly bonded to the front side of the fire door body (21), and the front side of the inner sealing ring (211) and the outer sealing ring (212) are both attached to the rear side of the reinforcing frame (111).

4. A smoke-proof and fireproof door for civil defense projects according to claim 1, characterized in that: The inner ring of the door frame (1) is fixedly bonded with a second sealing ring (12), and the outer wall of the fire door body (21) is fixedly bonded with a third sealing ring (213). After the fire door body (21) is engaged with the inner ring of the door frame (1), the second sealing ring (12) is located in front of the third sealing ring (213).

5. A smoke-proof and fireproof door for civil defense projects according to claim 1, characterized in that: A hinge (214) is fixedly installed on the right rear end of the fire door body (21), and the fire door body (21) is hinged to the rear end of the door frame (1) by means of the hinge (214).

6. A smoke-proof and fireproof door for civil defense projects according to claim 1, characterized in that: The reinforcing frame (111) is made of titanium alloy, the heat insulation layer (114) is made of rock wool board, and the fireproof layer (115) is made of a steel outer wall covered with silicate board.

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