Modularized rapid splicing type fireproof air pipe
By using the interference fit of the sealing strip and the raised part, combined with double sealing materials, the problems of air leakage and inconvenient disassembly during the installation and docking of fireproof and heat-insulating composite air ducts are solved, achieving tight connection and rapid installation.
Patent Information
- Application Number
- CN202520852892.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-30
AI Technical Summary
Existing fireproof and heat-insulating composite air ducts are prone to air leakage during installation and connection, and traditional flange connections are not convenient for quick installation and disassembly.
It adopts a sealing strip and a raised interference fit connection, combined with double sealing materials (sealing gasket and sealing filler), to replace the traditional flange connection and enhance the tightness and stability of the connection.
It improves the tightness and stability of the connection, reduces the possibility of air leakage, enables quick installation and disassembly, and facilitates maintenance.
Smart Images

Figure CN223924138U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fireproof equipment technical field, specifically, relate to modularization quick splicing type fireproof air pipe. BACKGROUND
[0002] Fireproof air pipe is a kind of air pipe system for fire safety, is made of fireproof material.When fire occurs, it can effectively isolate fire source, prevent fire spreading, discharge smoke and hot air from fire area to building, gain valuable time for personnel evacuation and fire rescue, ensure the normal operation of ventilation and smoke exhaust system.
[0003] Through the retrieval, application No.: CN202420706957.7 a kind of fireproof wind pipe, belong to wind pipe technical field, the through setting positioning sheet, when needing to position and shock absorption to wind pipe main body, positioning sheet is first conveniently clamped in the inside of positioning block by the clamping block of its one side at this time, at this time, positioning sheet is clamped in the two sides of wind pipe main body by pulling spring open to the one side, then, so as to clamp and position wind pipe main body, and traction spring and damping rod are convenient for the shock absorption of positioning sheet, the device is convenient for the positioning and shock absorption of wind pipe main body.
[0004] In the prior art, when installing the fireproof and heat-insulating composite air pipe, the flanges between the two fireproof and heat-insulating composite air pipes are fixed by a plurality of bolts, in this case, if the bolts are not tightened completely or the outer surface of the flange is deformed, air leakage is likely to occur when the fireproof and heat-insulating composite air pipe is ventilated, and it is extremely inconvenient to repeatedly disassemble the bolts for maintenance and replacement.
[0005] For the problems in the related art, no effective solution has been proposed so far. CONTENT OF THE UTILITY MODEL
[0006] To solve the problems raised above, the utility model provides a modularization quick splicing type fireproof air pipe, thereby solving the problems in the background art.
[0007] To achieve the problems raised above, the utility model adopts the following specific technical solutions:
[0008] The modularization quick splicing type fireproof air pipe comprises a first pipe body and a second pipe body, a sealing bin is welded to the outer side of the pipe opening of the first pipe body and the second pipe body, a protrusion is welded to the outer side of the sealing bin, a sealing strip is arranged at the protrusion, and the sealing strip and the sealing bin are in interference fit.
[0009] Further, a first sealing gasket is arranged at the bin wall of the sealing bin, a second sealing gasket is arranged at the pipe opening of the first pipe body and the second pipe body, the inside of the sealing bin is filled with a sealing filler, and an injection port is formed in the upper surface of the sealing bin.
[0010] Furthermore, the first pipe body, the second pipe body, the sealing chamber, and the sealing strip are all made of stainless steel plate.
[0011] Furthermore, a reinforcing ring is provided on the outer side of the sealing strip.
[0012] Furthermore, both the first and second pipe bodies are equipped with cross-shaped reinforcing rods inside.
[0013] Furthermore, both the outer surfaces of the first and second pipe bodies are provided with mounting lugs.
[0014] Compared with the prior art, this utility model provides a modular, quick-assembly fireproof air duct, which has the following advantages:
[0015] (1) This utility model adopts a sealing strip and a protrusion. When in use, the pipe openings of the first pipe body and the second pipe body are aligned with each other, and the sealing strip can be inserted into both sides of the protrusion. The interference fit between the sealing strip and the sealing chamber is used to fix the first pipe body and the second pipe body, replacing the traditional flange connection. This structure can improve the tightness and stability of the connection, reduce the possibility of air leakage, and facilitate quick installation and disassembly.
[0016] (2) This utility model forms a double seal by setting two different types of sealing materials, namely a sealing gasket and a sealing filler, at the pipe opening connection of the first pipe body and the second pipe body, thereby further improving the sealing performance and avoiding air leakage. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a structural schematic diagram of the modular, quick-assembly fireproof air duct proposed in this utility model;
[0019] Figure 2 This is a side view of the first pipe body of this utility model;
[0020] Figure 3 This is a schematic diagram of the internal structure of this utility model;
[0021] Figure 4 This is a structural schematic diagram of point A in this utility model;
[0022] Figure 5 This is a schematic diagram of the first pipe body part of this utility model.
[0023] In the picture:
[0024] 1. First pipe body; 2. Second pipe body; 3. Sealing chamber; 4. Protrusion; 5. Sealing strip; 6. First sealing gasket; 7. Second sealing gasket; 8. Sealing filler; 9. Injection port; 10. Cross reinforcing rod; 11. Lifting lug. Detailed Implementation
[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0026] According to an embodiment of this utility model, a modular, quick-assembly fireproof air duct is provided.
[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-5 As shown, the modular quick-assembly fireproof air duct according to an embodiment of the present utility model includes a first pipe body 1 and a second pipe body 2. A sealing chamber 3 is welded to the outside of the pipe openings of the first pipe body 1 and the second pipe. A protrusion 4 is welded to the outer side of the sealing chamber 3. A sealing strip 5 is provided at the protrusion 4, and the sealing strip 5 and the sealing chamber 3 are interference fit.
[0028] In one embodiment, a sealing strip 5 and a protrusion 4 are used. When in use, the pipe openings of the first pipe body 1 and the second pipe body 2 are aligned with each other, and the sealing strip 5 can be inserted into both sides of the protrusion 4. The interference fit between the sealing strip 5 and the sealing chamber 3 is used to fix the first pipe body 1 and the second pipe body 2, replacing the traditional flange connection. This structure can improve the tightness and stability of the connection, reduce the possibility of air leakage, and also facilitate quick installation and disassembly.
[0029] Specifically, a first sealing gasket 6 is provided on the wall of the sealed chamber 3, a second sealing gasket 7 is provided at the pipe openings of the first pipe body 1 and the second pipe body 2, the interior of the sealed chamber 3 is filled with a sealing filler 8, and an injection port 9 is provided on the upper surface of the sealed chamber 3.
[0030] In one embodiment, by setting two different types of sealing materials, namely a sealing gasket and a sealing filler 8, at the pipe joint of the first pipe body 1 and the second pipe body 2, a double seal is formed, which further improves the sealing performance and avoids air leakage.
[0031] Specifically, the first pipe body 1, the second pipe body 2, the sealing chamber 3, and the sealing strip 5 are all made of stainless steel plate.
[0032] In one embodiment, it exhibits good high-temperature resistance and corrosion resistance, and high strength.
[0033] Specifically, a reinforcing ring is provided on the outer side of the sealing strip 5.
[0034] In one embodiment, by setting a reinforcing ring, the overall structural strength of the sealing strip 5 is increased, preventing it from deforming and affecting the fixing effect.
[0035] Specifically, both the first pipe body 1 and the second pipe body 2 are equipped with cross-shaped reinforcing rods 10 inside.
[0036] In one embodiment, a cross-shaped reinforcing bar 10 is provided to improve the overall structural strength of the first pipe body 1 and the second pipe body 2, preventing deformation due to external forces during installation and use.
[0037] Specifically, both the outer surfaces of the first pipe body 1 and the second pipe body 2 are provided with mounting lugs 11.
[0038] In one embodiment, mounting lugs 11 are provided for fixed connection with the mounting bracket.
[0039] Working principle: The system employs a sealing strip 5 and a protrusion 4. During use, the pipe openings of the first pipe body 1 and the second pipe body 2 are aligned, allowing the sealing strip 5 to be inserted into both sides of the protrusion 4. The interference fit between the sealing strip 5 and the sealing chamber 3 secures the first pipe body 1 and the second pipe body 2, replacing the traditional flange connection. This structure improves the tightness and stability of the connection, reducing the possibility of air leakage, and also facilitates quick installation and disassembly. By using two different types of sealing materials—a sealing gasket and a sealing filler 8—at the connection between the pipe openings of the first pipe body 1 and the second pipe body 2, a double seal is formed, further improving the sealing performance and preventing air leakage.
[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A modular, quick-assembly fireproof duct, comprising a first duct body (1) and a second duct body (2), characterized in that, The first pipe body (1) and the second pipe are welded to the outside of the pipe openings with sealing chambers (3). The outer side of the sealing chamber (3) is welded with a protrusion (4). A sealing strip (5) is provided at the protrusion (4), and the sealing strip (5) and the sealing chamber (3) are interference fit.
2. The modular, rapid-assembly fireproof duct according to claim 1, characterized in that, The sealing chamber (3) is provided with a first sealing gasket (6) on its wall, and the openings of the first pipe body (1) and the second pipe body (2) are provided with a second sealing gasket (7). The interior of the sealing chamber (3) is filled with a sealing filler (8), and the upper surface of the sealing chamber (3) is provided with an injection port (9).
3. The modular, rapid-assembly fireproof duct according to claim 2, characterized in that, The first pipe body (1), the second pipe body (2), the sealing chamber (3) and the sealing strip (5) are all made of stainless steel plate.
4. The modular, rapid-assembly fireproof duct according to claim 3, characterized in that, A reinforcing ring is provided on the outer side of the sealing strip (5).
5. The modular, rapid-assembly fireproof duct according to claim 4, characterized in that, Both the first pipe body (1) and the second pipe body (2) are provided with cross-shaped reinforcing rods (10).
6. The modular, rapid-assembly fireproof duct according to claim 5, characterized in that, The outer sides of the first pipe body (1) and the second pipe body (2) are provided with mounting lugs (11).
Citation Information
Patent Citations
Fireproof and shockproof air pipe
CN221897282U