Plugging device for ventilation pipeline penetrating through smoke-blocking vertical wall

Abstract

The utility model relates to a plugging device for a ventilation pipeline penetrating through a smoke-blocking vertical wall, and belongs to the technical field of building fire protection and fire prevention. Comprising a plugging assembly, ventilation pipes and a smoke-blocking vertical wall, openings corresponding to the ventilation pipes are formed in the smoke-blocking vertical wall, and the ventilation pipes at the two ends are located at the openings and are plugged through the smoke-blocking vertical wall; the plugging assembly comprises a fixing frame, a first sealing plate and a second sealing plate, the second sealing plate is fixedly connected with the ventilation pipe, the ventilation pipe and the second sealing plate are located in the fixing frame and are matched with the first sealing plate, and the first sealing plate is located in the fixing frame and is in sliding connection with the inner wall of the fixing frame through an adjusting bolt. According to the plugging device for the ventilation pipeline penetrating through the smoke screen, the position of the sealing plate is accurately controlled through the adjusting bolt, uniform pressure sealing is achieved, the problem that uneven filling is prone to occurring in a traditional sealing mode is solved, the expanded graphite material is adopted, automatic expansion is achieved at the high temperature, the sealing effect is enhanced, and smoke leakage is prevented.

Description

Technical Field

[0001] This utility model relates to a sealing device for ventilation ducts that penetrate smoke curtain walls, belonging to the field of building fire protection technology. Background Technology

[0002] Nowadays, large shopping malls, subway stations, and other public places are generally equipped with smoke curtains. Their main function is to prevent toxic hot smoke from rising in the event of a fire. This hot smoke accumulates near the ceiling for a period of time under the protection of the smoke curtain, thus buying valuable time for people to escape the fire scene.

[0003] Traditional designs allow ventilation ducts to pass directly through smoke curtains to meet daily ventilation needs. However, in high-temperature environments during fires, the gap between the ducts and the smoke curtains can easily become a smoke leakage channel, weakening the smoke barrier effect and reducing the building's fire safety performance. Utility Model Content

[0004] This invention provides a sealing device for ventilation ducts penetrating smoke curtain walls, in order to solve the sealing problem between smoke curtain walls and ventilation ducts in the prior art.

[0005] This utility model provides a sealing device for ventilation ducts passing through a smoke curtain wall, which includes a sealing component, a ventilation duct, and a smoke curtain wall. The ventilation duct is located at both ends of the smoke curtain wall, and the smoke curtain wall is provided with openings corresponding to the ventilation ducts. The ventilation ducts at both ends are located at the openings and are sealed by the smoke curtain wall.

[0006] The sealing assembly includes a fixed frame, a first sealing plate, and a second sealing plate. The second sealing plate is fixedly connected to the ventilation pipe. The ventilation pipe and the second sealing plate are located inside the fixed frame and cooperate with the first sealing plate. The first sealing plate is located inside the fixed frame and is slidably connected to the inner wall of the fixed frame by means of adjusting bolts.

[0007] Preferably, the fixed frame and the first sealing plate are provided with through holes corresponding to the ventilation pipe, the ventilation pipe passes through the through holes in the fixed frame and the first sealing plate, and the fixed frame and the smoke curtain are fixedly connected by fixing bolts.

[0008] Preferably, the fixing frame is provided with waist-shaped holes corresponding to the fixing bolts, and the waist-shaped holes are multiple and linearly distributed on the fixing frame.

[0009] Preferably, one end of the adjusting bolt is connected to the first sealing plate, and the other end passes through the fixing frame and is connected to the fixing frame by threads.

[0010] Preferably, the second sealing plate has a protrusion, and the first sealing plate has a groove corresponding to the protrusion, wherein the protrusion is engaged in the groove.

[0011] Preferably, the protrusions and grooves are arranged in a rectangular shape with their ends connected.

[0012] Preferably, the protrusion and the first sealing plate are both made of fire-resistant elastic rubber.

[0013] Preferably, the first sealing plate and the protrusion are both hollow structures, and the hollow structure forms an annular cavity, which is filled with expanded graphite.

[0014] The beneficial effects of this utility model are:

[0015] This utility model provides a sealing device for ventilation ducts penetrating smoke curtain walls. Through the cooperation between the first sealing plate 12 and the second sealing plate 13, and the precise control of the position of the first sealing plate 12 by the adjusting bolt 112, uniform pressure sealing is achieved. This overcomes the problems of uneven filling and pore residue that occur when using fireproof putty or sealant in the prior art, which requires workers' experience. This greatly improves the sealing reliability of the sealing device. The waist-shaped hole 111 provided on the fixing frame 11 allows the fixing bolt 01 to move within a certain range, thereby allowing for fine adjustment of the position of the fixing frame 11, effectively compensating for installation deviations, improving the flexibility and accuracy of installation, and enabling the sealing device to be installed more precisely on the smoke curtain wall 3. In the event of a fire or high-temperature smoke, the expanded graphite inside the first sealing plate 12 and the protrusion 131 will expand, causing the first sealing plate 12 and the second sealing plate 13 to expand as well, making the contact between the first sealing plate 12 and the protrusion 131 tighter. This "active pressurization" sealing mechanism effectively compensates for the decline in sealing performance caused by material softening, improves sealing reliability in high-temperature environments, prevents smoke from leaking through the through-hole between the ventilation pipe 2 and the smoke curtain 3, and generates outward expansion force through the automatic expansion of expanded graphite, breaking through the physical limits of traditional static sealing. It does not rely on precise external pressure control, can better adapt to complex and variable high-temperature environments, effectively avoids performance degradation caused by environmental erosion, and ensures the stability and durability of the sealing effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a sealing device for ventilation ducts that penetrate smoke curtain walls, according to this utility model.

[0017] Figure 2 This is an exploded structural diagram of a sealing device for a ventilation duct that penetrates a smoke curtain wall, according to the present invention.

[0018] Figure 3 This is a schematic diagram of the exploded structure of a sealing device for a ventilation duct that penetrates the smoke curtain wall, according to another angle of this utility model.

[0019] Figure 4This is a schematic diagram of the sealing component structure of a sealing device for a ventilation duct that penetrates the smoke curtain wall according to the present invention.

[0020] Figure 5 This is another structural schematic diagram of the sealing component of a sealing device for a ventilation duct that penetrates a smoke curtain wall, according to this utility model.

[0021] In the diagram: 1. Sealing assembly, 11. Fixing frame, 111. Waist-shaped hole, 112. Adjusting bolt, 12. First sealing plate, 121. Groove, 13. Second sealing plate, 131. Protrusion, 2. Ventilation pipe, 3. Smoke curtain. Detailed Implementation

[0022] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] Example 1: This utility model provides a sealing device for ventilation ducts passing through smoke curtain walls, which includes a sealing component 1, a ventilation pipe 2, and a smoke curtain wall 3. The ventilation pipe 2 is located at both ends of the smoke curtain wall 3. The smoke curtain wall 3 is provided with openings corresponding to the ventilation pipe 2. The two ventilation pipes 2 are connected to each other through the sealing component 1. The sealing component 1 seals the gap between the outer wall of the sealing component 1 and the opening.

[0024] The sealing assembly 1 includes a fixed frame 11, a first sealing plate 12, and a second sealing plate 13. The fixed frame 11 and the first sealing plate 12 have through holes corresponding to the ventilation pipe 2. The ventilation pipe 2 passes through the through holes in the fixed frame 11 and the first sealing plate 12. The fixed frame 11 is fixedly connected to the smoke curtain 3 by fixing bolts. The fixed frame 11 has multiple oblong holes 111 corresponding to the fixing bolts, arranged in a rectangular linear pattern. Adjusting bolts 112 corresponding to the first sealing plate 12 are located on the outer side of the fixed frame 11. The first sealing plate 12 is connected to the inner wall of the fixed frame 11 by adjusting bolts. 112 is slidably connected. There are multiple adjusting bolts 112, which are linearly distributed on the fixed frame 11. One end of the adjusting bolt 112 is connected to the first sealing plate 12, and the other end passes through the fixed frame 11 and is threaded between the fixed frame 11. The second sealing plate 13 is located on the outer side of the ventilation pipe 2 near the fixed frame 11 and is rectangular. The second sealing plate 13 is fixedly connected to the ventilation pipe 2. The second sealing plate 13 is provided with a protrusion 131. The first sealing plate 12 is provided with a groove 121 corresponding to the protrusion 131. The protrusion 131 is engaged in the groove 121. The first sealing plate 12 and the protrusion 131 are both made of fireproof elastic rubber.

[0025] The inner wall of the fixed frame 11 is provided with a sliding groove corresponding to the first sealing plate 12. The first sealing plate 12 slides laterally along the sliding groove. The protrusion 131 and the groove 121 are connected end to end to form a rectangle. The protrusion 131 is located on the outer side of the second sealing plate 13 near the end of the first sealing plate 12.

[0026] During use, holes corresponding to the ventilation pipes 2 are cut into the smoke curtain 3 according to design requirements. The second sealing plate 13 is fixed to the ends of the ventilation pipes 2 on both sides of the smoke curtain 3. The corresponding fixing frame 11 is fitted onto the ventilation pipes 2 on both sides of the smoke curtain 3. The ventilation pipes 2 pass through the through holes on the fixing frame 11 and the first sealing plate 12. The fixing frame 11 is fixed to the smoke curtain 3 with fixing bolts. The fixing bolts pass through the waist-shaped holes 111 and are fixed to the smoke curtain 3. The position of the fixing frame 11 can be finely adjusted through the waist-shaped holes 111 to compensate for installation deviations. The fixing frame 11 is fixed to the smoke curtain 3 by rotating the adjusting bolt 112. The adjusting bolt 112 drives the first sealing plate 12 to move along the inside of the fixing frame 11. The slide groove moves, and the first sealing plate 12 moves toward the second sealing plate 13, causing the protrusion 131 to engage in the groove 121. The first sealing plate 12 continues to move, causing it to press against the protrusion 131. The protrusion 131 deforms and tends to flatten, forming a uniform pressure seal. This overcomes the problems of uneven filling and residual pores that arise from the use of fireproof putty or sealant in the prior art, which requires workers' experience for construction. The flattening deformation of the protrusion 131 can be adjusted by adjusting the screw depth of the bolt 112, ensuring consistent pressure on the sealing surface. This ensures tight contact between the first sealing plate 12 and the second sealing plate 13, thereby preventing smoke from leaking from the through hole between the ventilation pipe 2 and the smoke curtain 3.

[0027] Compared with existing technologies, by adjusting the position of the fixing bolt in the waist-shaped hole 111, the position of the fixing frame 11 can be finely adjusted, effectively compensating for installation deviations and ensuring that the fixing frame 11 can be accurately installed on the smoke curtain 3. This improves the flexibility and accuracy of installation and avoids the difficulty in ensuring that the fixing frame 11 and the opening on the smoke curtain 3 are perfectly aligned due to construction errors or site conditions during actual installation. By rotating the adjusting bolt 112, the first sealing plate 12 can be moved along the groove in the fixing frame 11, so that the position of the first sealing plate 12 can be adjusted according to the actual sealing requirements. When the first sealing plate 12 moves toward the second sealing plate 13, the protrusion 131 engages in the groove 121. As the first sealing plate 12 continues to move, the first sealing plate 12 will squeeze the protrusion 131, causing the protrusion 131 to deform and tend to flatten. Because the screwing depth of the adjusting bolt 112 is controllable and the flattening deformation of the protrusion 131 is also adjustable, the pressure on the sealing surface is consistent, ensuring close contact between the first sealing plate 12 and the second sealing plate 13, forming a uniform pressure seal. Compared with the existing technology that uses fireproof putty or sealant, which relies on the experience of workers and is prone to uneven filling and pore residue, the mechanical adjustment method can more accurately control the sealing effect, effectively preventing smoke from leaking from the through hole between the ventilation pipe 2 and the smoke curtain 3, and improving the sealing reliability and stability of the sealing device.

[0028] Example 2: In the above examples, when a fire occurs or there is high temperature smoke, the contact pressure decreases and the sealing surface pressure is insufficient due to the softening of the material. Therefore, this application example optimizes the first sealing plate 12 and the protrusion 131 based on the above examples.

[0029] In this embodiment, the first sealing plate 12 and the protrusion 131 are both hollow structures, forming annular cavities. Expanded graphite is provided in the cavities. When exposed to high temperature smoke or fire, the expanded graphite expands, thereby causing the first sealing plate 12 and the second sealing plate 13 to expand, making the contact between the first sealing plate 12 and the protrusion 131 tighter.

[0030] During use, when high temperature or fire occurs, the temperature of the fixed frame 11 increases, and the expanded graphite inside the first sealing plate 12 and the protrusion 131 begins to expand, expanding the first sealing plate 12 and the protrusion 131 outward, making the contact between the protrusion 131 and the first sealing plate 12 tighter, changing from "passive pressure" to "active pressure increase", breaking through the physical limits of traditional static sealing and avoiding performance degradation caused by environmental erosion.

[0031] Compared with existing technologies, by expanding graphite, the first sealing plate 12 and the second sealing plate 13 expand, making the contact between the protrusion 131 and the first sealing plate 12 tighter. This effectively compensates for the problem of decreased sealing performance caused by material softening, greatly improves the sealing reliability in high-temperature environments, prevents smoke from leaking from the through hole between the ventilation pipe 2 and the smoke curtain 3, and enhances the protective capability of the sealing device in emergency situations such as fires. In high-temperature environments, the expanded graphite automatically expands to generate outward expansion force, actively increasing the contact pressure between the protrusion 131 and the first sealing plate 12. This breaks through the physical limits of traditional static sealing, does not rely on precise external pressure control, and can better adapt to complex and variable high-temperature environments. It effectively avoids performance degradation caused by environmental erosion and ensures the stability and durability of the sealing effect.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A plugging device for a ventilation duct through a smoke-stop curtain, comprising a plugging assembly (1), a ventilation duct (2), a smoke-stop curtain (3), characterized in that: The ventilation pipe (2) is located at both ends of the smoke screen (3), and the smoke screen (3) is provided with an opening corresponding to the ventilation pipe (2); the ventilation pipe (2) at both ends is located at the opening and is blocked by the smoke screen (3); The blocking assembly (1) comprises a fixed frame (11), a first sealing plate (12) and a second sealing plate (13), the second sealing plate (13) is fixedly connected with the ventilation pipe (2), the ventilation pipe (2) and the second sealing plate (13) are located inside the fixed frame (11) and are matched with the first sealing plate (12), and the first sealing plate (12) is slidably connected between the fixed frame (11) and the inner wall of the fixed frame (11) through the adjusting bolt (112).

2. A closure device for a vented duct smoke barrier according to claim 1, wherein: The fixed frame (11) and the first sealing plate (12) are provided with through holes corresponding to the ventilation pipe (2), the ventilation pipe (2) penetrates the through holes of the fixed frame (11) and the first sealing plate (12), and the fixed frame (11) is fixedly connected with the smoke screen (3) through the fixing bolt.

3. A closure device for a vented duct smoke barrier according to claim 2, wherein: The fixed frame (11) is provided with a plurality of waist-shaped holes (111) corresponding to the fixing bolt and arranged linearly on the fixed frame (11).

4. A closure device for a vented duct smoke barrier according to claim 1, wherein: One end of the adjusting bolt (112) is connected with the first sealing plate (12), and the other end penetrates the fixed frame (11) and is connected with the fixed frame (11) through threads.

5. A smoke screen blocking device for a vented duct according to claim 1, wherein: The second sealing plate (13) is provided with a protrusion (131), and the first sealing plate (12) is provided with a groove (121) corresponding to the protrusion (131), and the protrusion (131) is clamped in the groove (121).

6. A smoke screen blocking device for a vented duct according to claim 5, wherein: The protrusion (131) and the groove (121) are arranged in a rectangular shape.

7. A damming device for a vented duct smoke barrier according to claim 6, wherein: The protrusion (131) and the first sealing plate (12) are made of fireproof elastic rubber.

8. A smoke screen blocking device for a vented duct according to claim 7, wherein: The first sealing plate (12) and the protrusion (131) are hollow structures, and the hollow structures form annular cavities, and the cavities are provided with expanded graphite.

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