Through-wall plugging structure of fireproof air pipe

Abstract

The through-wall plugging structure of the fireproof air pipe comprises a wall body and the air pipe, a structural layer is arranged between the wall body and the air pipe, plugging rings are arranged on the surface, tightly attached to the structural layer, of the air pipe, the plugging rings are symmetrically arranged on the surfaces of the two sides of the structural layer, the plugging rings are installed on the surface of the structural layer in an embedded mode, and a screw rod is connected between the plugging rings on the two sides. A nut is arranged on the surface of the screw, a cavity, a partition net layer and a felt layer are sequentially arranged on the inner side of the plugging ring, the upper portion of the cavity extends to the surface of the plugging ring to be provided with an injection port, the felt layer is adjacent to the structural layer, and the partition net layer is adjacent to the felt layer. Through the arrangement of the plugging ring structure, when the air pipe penetrates through the wall front and back, the plugging ring forms a clamping structure from the two ends, the space between the air pipe and the wall is further filled and extruded, the structural layer is protected by the plugging ring, and meanwhile the sealing effect between the wall and the air pipe can be enhanced.

Description

Technical Field

[0001] This utility model relates to the field of heating, ventilation and air conditioning, and in particular to a wall-penetrating sealing structure for fireproof air ducts. Background Technology

[0002] Fireproof air ducts are made of non-combustible and fire-resistant materials. In the event of a fire, they can effectively prevent the spread of fire through the ducts, buying time for personnel evacuation and fire rescue. At the same time, they ensure the normal operation of the ventilation system for a certain period of time, helping to remove smoke and harmful gases, providing clear evacuation routes and a good fire-fighting working environment. Therefore, in order to be used on a large scale, fireproof air ducts usually need to run through and connect different rooms in the wall. For example, patent number CN220435651U discloses a similar prior art.

[0003] However, in existing technologies, a structural layer is usually required to connect the wall and the fireproof air duct. The connection between the fireproof air duct and the structural layer is prone to gaps due to the vibration of the air duct, resulting in poor sealing between the air duct and the wall and rendering the fireproof air duct ineffective. The structural layer itself relies solely on the surface layer of the building's interior walls for protection, such as the interior wall plaster layer. After long-term use, the contact between the structural layer and the surrounding environment, due to extreme dryness or humidity, as well as the temperature difference between the fireproof air duct and the surrounding environment, can all lead to aging of the structural layer, which can also cause poor sealing between the air duct and the wall.

[0004] Therefore, to address the above problems, a wall-penetrating sealing structure for fireproof air ducts is provided here. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a wall-penetrating sealing structure for fireproof air ducts. It mainly solves the problems of poor sealing effect between fireproof air ducts and walls, and easy aging of the structural layer, which leads to gaps.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] This utility model is a wall-penetrating sealing structure for fireproof air ducts, including a wall and an air duct. A structural layer is provided between the wall and the air duct. A sealing ring is provided on the surface of the structural layer in close contact with the air duct, and the sealing rings are symmetrically arranged on both sides of the structural layer. The sealing rings are embedded in the surface of the structural layer. A screw is connected between the two sealing rings, and a nut is provided on the surface of the screw. A cavity, a mesh layer and a felt layer are arranged in sequence on the inner side of the sealing ring. An injection port is installed on the upper part of the cavity extending to the surface of the sealing ring. The felt layer and the structural layer are adjacent to each other, and the mesh layer and the felt layer are adjacent to each other. The mesh layer and the air duct are fixedly connected.

[0008] Preferably, the structural layer includes a cement mortar layer, a fireproof rock wool layer, and a thermal insulation layer. The thermal insulation layer is adjacent to the air duct, the cement mortar layer is located on the outermost layer, and the edge of the sealing ring is provided with a protrusion, which is in contact with the fireproof rock wool layer.

[0009] Preferably, the sealing ring includes an upper connecting ring and a lower connecting ring, which are fixedly connected by fasteners.

[0010] Preferably, the fastener includes fixing bolts for fixing the fastener, the screws are fixedly installed at the four corners of the sealing ring, and the fasteners are located on both sides of the sealing ring.

[0011] Preferably, the duct passes through the middle of the sealing ring, the screw passes through the wall and is located on the outside of the cement mortar layer, and the edge of the sealing ring covers the surface of the cement mortar layer.

[0012] Preferably, the inner side of the fastener is provided with a groove, and the surface of the air duct is provided with a protrusion, and the position of the protrusion corresponds to the position of the groove.

[0013] Preferably, the protrusion has a threaded hole in the middle, and the fixing bolt passes through the threaded hole.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model incorporates a sealing ring structure, which allows the duct to pass through the wall from both ends, forming a clamping structure. This further fills and compresses the space between the duct and the wall, protecting the structural layer while enhancing the sealing effect between the wall and the duct.

[0016] This utility model further includes a protrusion on the sealing ring that connects to the fireproof air duct, so that the structure between the sealing rings forms a frame structure, which is connected by the air duct, the sealing ring and the screw. This increases the overall connection structure and prevents the sealing ring from loosening on its surface due to the vibration of the air duct. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0019] Figure 2 This is a cross-sectional structural diagram of Example 1;

[0020] Figure 3 This is a split diagram of the sealing ring structure in Example 1;

[0021] Figure 4 This is a schematic diagram of the fastener structure in Example 2;

[0022] In the diagram: 1. Wall; 2. Air duct; 201. Protrusion; 202. Threaded hole; 3. Structural layer; 301. Cement mortar layer; 302. Fireproof rock wool layer; 303. Thermal insulation layer; 4. Sealing ring; 401. Screw; 402. Nut; 403. Cavity; 404. Mesh layer; 405. Felt layer; 406. Inlet; 407. Upper connecting ring; 408. Lower connecting ring; 409. Protrusion; 5. Fastener; 501. Fixing bolt; 502. Groove. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] In the attached diagram, all identical reference numerals refer to the same components.

[0025] Example 1

[0026] like Figure 1-4As shown, this utility model provides a wall-penetrating sealing structure for fireproof air ducts, including a wall 1 and an air duct 2. A structural layer 3 is provided between the wall 1 and the air duct 2. A sealing ring 4 is provided on the surface of the structural layer 3, and the sealing rings 4 are symmetrically arranged on both sides of the structural layer 3. The sealing rings 4 are embedded in the surface of the structural layer 3. A screw 401 is connected between the two sealing rings 4. A nut 402 is provided on the surface of the screw 401. A cavity 403, a mesh layer 404, and a felt layer 405 are arranged sequentially on the inner side of the sealing ring 4. An injection port 406 is installed on the upper part of the cavity 403 extending to the surface of the sealing ring 4. The felt layer 405 is adjacent to the structural layer 3, and the mesh layer 404 is adjacent to the felt layer 405. The mesh layer 404 and the air duct 2 are fixedly connected. Since the sealing ring 4 is located on the wall... The sealing ring 4 is set on both sides and fixed in the middle by a through screw 401 and nut 402. When the sealing ring 4 is pulled back and forth, the mesh layer 404 fixedly connected to the sealing ring 4 on the inner side can be tightened, so that the mesh layer 404 squeezes the felt layer 405 and makes the felt layer 405 tightly adhere to the surface of the structural layer 3 to form a seal. At the same time, the fixing clamps at both ends can also further fix the air duct 2. The cavity 403 on the outermost side of the mesh layer 404 is provided with an injection port 406. After the sealing ring 4 is fixed, a sealing liquid, such as liquid flame retardant resin material or sealant, can be injected from the injection port 406 to form a multi-layer sealing structure on the outside of the felt layer 405. It can also bond the air duct 2 and the inside of the sealing ring 4, and fix the air duct 2 more firmly to the wall 1.

[0027] Furthermore, the structural layer 3 includes a cement mortar layer 301, a fireproof rock wool layer 302, and a thermal insulation layer 303. The thermal insulation layer 303 is adjacent to the air duct 2, and the cement mortar layer 301 is located on the outermost layer. The edge of the sealing ring 4 is provided with a protrusion 409, and the protrusion 409 is in contact with the fireproof rock wool layer 302. As the structure between the air duct 2 and the wall 1, the structural layer 3, in order to reduce the heat transfer and achieve a certain degree of flame retardancy, also has a fireproof rock wool layer 302 and a thermal insulation layer 303 installed at the cement mortar layer 301 on the wall 1. In order to maintain its density at all times, the fireproof rock wool layer 302 is compressed back and forth by the protrusion 409 under the pressure of the sealing ring 4. Figure 2 As shown, this ensures that the density of the compressed fireproof rock wool layer 302 will not decrease due to the deformation of the wall 1 caused by temperature.

[0028] Furthermore, the sealing ring 4 includes an upper connecting ring 407 and a lower connecting ring 408, which are fixedly connected by fasteners 5. The fasteners 5 include fixing bolts 501, which are used for fixing the fasteners 5. The bolts 401 are fixedly installed at the four corners of the sealing ring 4, and the fasteners 5 are located on both sides of the sealing ring 4. This allows the sealing ring 4 to be not only connected and fixed to each other in the horizontal direction, but also to be further fixed to the surface of the duct 2 in the vertical direction. The structure of the upper connecting ring 407 and the lower connecting ring 408 makes it easier to install the sealing structure.

[0029] Furthermore, the duct 2 penetrates the middle of the sealing ring 4, the screw 401 penetrates the wall 1, and the screw 401 is located on the outside of the cement mortar layer 301. The edge of the sealing ring 4 covers the surface of the cement mortar layer 301, so that the edge of the sealing ring 4 completely covers the surface of the structural layer 3, and the structural layer 3 is protected by the sealing ring 4 from corrosion by the external environment.

[0030] Specifically, a through hole is provided on wall 1, which can be used to install a PVC pipe; during installation, the upper connecting ring 407 and the lower connecting ring 408 of the sealing ring 4 are used to clamp the air duct 2, and then the screw 401 is inserted into the through hole and fixed with the nut 402. Figure 3 As shown, after the fasteners 5 on both sides are aligned vertically, the fixing bolts 501 are vertically fixed, so that the sealing ring 4 can cover the structural layer 3 from the front and back. The fireproof rock wool layer 302 of the structural layer 3 is squeezed from the front and back by the protrusion 409, thereby further sealing the space between the air duct 2 and the wall 1 while protecting the structural layer 3 from direct contact with the environment.

[0031] After the sealing ring 4 is installed, the internal mesh layer 404 will compress the felt layer 405, such as... Figure 2 As shown, the felt layer 405 covers the space between the insulation layer 303 and the fireproof rock wool layer 302, forming a staggered installation. When the cavity 403 is not filled, it serves as a deformation space for the thermal expansion and contraction of the inner structure. When the structural layer 3 or the felt layer 405 expands, the mesh layer 404 can expand into the cavity. Workers can also inject an elastic sealing liquid, such as liquid flame-retardant resin or sealant, from the upper injection port 406 to form a multi-layered sealing structure on the outside of the felt layer 405. It can also bond the duct 2 and the sealing ring 4 internally. The liquid structure can seal the gap between the sealing ring 4 and the wall 1 and the structural layer 3. At the same time, the elastic effect can generate energy absorption, making the duct 2 more firmly fixed to the wall 1. The connection of the duct 2 can be connected to the sealing ring 4 and the wall 1 as a whole, and prevent the duct 2 from cracking with the wall 1 or the structural layer 3 due to vibration.

[0032] Example 2

[0033] The difference from Example 1 is that, as Figure 4 As shown, the inner side of the fastener 5 is provided with a groove 502, and the surface of the air duct 2 is provided with a protrusion 201, and the position of the protrusion 201 corresponds to the position of the groove 502. A threaded hole 202 is provided in the middle of the protrusion 201, and the fixing bolt 501 passes through the threaded hole 202.

[0034] Specifically, the duct 2 and the sealing ring 4 can also be mechanically connected to the protrusion 201 through the fastener 5. This not only allows the upper connecting ring 407 and the lower connecting ring 408 to form a positioning during installation, but also allows both sealing rings 4 to form a frame structure connected to the duct 2. Since the distance between the sealing rings 4 is fixed, when the duct 2 on one side of the wall 1 vibrates, it will not push the sealing rings 4 and cause the sealing rings 4 and the duct 2 to loosen.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wall-penetrating sealing structure for a fireproof air duct, comprising a wall (1) and an air duct (2), wherein a structural layer (3) is provided between the wall (1) and the air duct (2), characterized in that, The duct (2) is fitted with a sealing ring (4) close to the surface of the structural layer (3), and the sealing ring (4) is symmetrically arranged on both sides of the structural layer (3). The sealing ring (4) is embedded in the surface of the structural layer (3). A screw (401) is connected between the two sealing rings (4). A nut (402) is provided on the surface of the screw (401). A cavity (403), a mesh layer (404), and a felt layer (405) are arranged in sequence on the inner side of the sealing ring (4). An injection port (406) is installed on the upper part of the cavity (403) extending to the surface of the sealing ring (4). The felt layer (405) is adjacent to the structural layer (3), and the mesh layer (404) is adjacent to the felt layer (405). The mesh layer (404) and the duct (2) are fixedly connected.

2. The wall-penetrating sealing structure for a fireproof air duct according to claim 1, characterized in that, The structural layer (3) includes a cement mortar layer (301), a fireproof rock wool layer (302), and a thermal insulation layer (303). The thermal insulation layer (303) is adjacent to the air duct (2). The cement mortar layer (301) is located on the outermost layer. The edge of the sealing ring (4) is provided with a protrusion (409), and the protrusion (409) is in contact with the fireproof rock wool layer (302).

3. The wall-penetrating sealing structure for a fireproof air duct according to claim 1, characterized in that, The sealing ring (4) includes an upper connecting ring (407) and a lower connecting ring (408), which are fixedly connected by a fastener (5).

4. The wall-penetrating sealing structure for a fireproof air duct according to claim 3, characterized in that, The fastener (5) includes a fixing bolt (501), which is used for the fixed installation of the fastener (5). The screw (401) is fixedly installed at the four corners of the sealing ring (4), and the fastener (5) is located on both sides of the sealing ring (4).

5. The wall-penetrating sealing structure for a fireproof air duct according to claim 2, characterized in that, The duct (2) passes through the middle of the sealing ring (4), the screw (401) passes through the wall (1), and the screw (401) is located on the outside of the cement mortar layer (301). The edge of the sealing ring (4) covers the surface of the cement mortar layer (301).

6. The wall-penetrating sealing structure for a fireproof air duct according to claim 4, characterized in that, The fastener (5) has a groove (502) on its inner side, and the air duct (2) has a protrusion (201) on its surface, with the position of the protrusion (201) corresponding to the position of the groove (502).

7. The wall-penetrating sealing structure for a fireproof air duct according to claim 6, characterized in that, The protrusion (201) has a threaded hole (202) in the middle, and the fixing bolt (501) passes through the threaded hole (202).

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