Air pipe embedded part
By using the closed structure design of the duct embedded parts, the problems of water seepage and filler cracking at the connection between the duct and the wall were solved, achieving efficient construction and low-cost water seepage protection.
Patent Information
- Application Number
- CN202520247365.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-17
AI Technical Summary
The gaps at the connection between traditional air ducts and walls are difficult to seal, leading to problems such as water seepage and cracking of the filler.
Pre-embedded duct components, including duct fittings, connecting flanges, and water-stop rings, are used to form a closed structure through welding, avoiding the need for filling materials, improving construction efficiency, and reducing the risk of water seepage.
It effectively reduces the risk of water seepage, improves construction efficiency, saves construction time and costs, and prevents the filling material from cracking.
Smart Images

Figure CN223768307U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a pre-embedded component for air ducts, belonging to the field of building electromechanical installation engineering. Background Technology
[0002] The traditional method for ductwork joints where ducts exit the roof or wall involves pre-reserving openings in the wall and then filling the gaps with materials after the ductwork is installed. This construction method has the following problems: the gap between the ductwork and the reserved opening is narrow, making it difficult to ensure the compactness of the filler, which can easily lead to water seepage at the filler; and after long-term use, the filler may crack, leading to water seepage in later use. Utility Model Content
[0003] To address the problem of water seepage at the connection between existing air ducts and walls due to issues with the compaction or cracking of the filler, this utility model provides an air duct pre-embedded component that can prevent water seepage at the connection point between the air duct and the wall.
[0004] To solve the above technical problems, this utility model includes the following technical solution:
[0005] A pre-embedded duct component includes a duct component, connecting flanges disposed at both ends of the duct component, and a water-stop wing ring sleeved on the duct component; the water-stop wing ring is located in the middle part of the duct component and is sealed with the duct component.
[0006] Furthermore, the water-stop flange of the duct embedded part is formed by welding angle iron to form a closed structure. One side flange of the angle iron is attached to the outer wall of the duct part, and both ends are welded and fixed to the duct part. The other side flange of the angle iron is set perpendicular to the duct part.
[0007] Furthermore, the connecting flanges at both ends of the duct embedded parts are formed by welding angle iron to form a closed structure. One side flange of the angle iron is fitted and welded to the outer wall of the duct part, and a connecting hole is provided on the other side flange of the angle iron. The position of the connecting hole matches the position of the bolt hole of the flange of the duct to be spliced and installed.
[0008] This utility model, by adopting the above technical solution, has the following advantages and positive effects compared with the prior art: The connecting flange of the duct pre-embedded component provided by this utility model can be quickly spliced with the flange of the duct to be installed, improving the construction efficiency of the duct. The water-stop wing ring fitted on the duct can effectively reduce the risk of water leakage. Moreover, by setting the duct pre-embedded component, the filling material process can be eliminated, avoiding water leakage caused by cracking of the filling material later. In addition, the duct pre-embedded component is simple to manufacture, low in cost, and easy to operate during construction, which can effectively save construction time and labor costs. Attached Figure Description
[0009] Figure 1This is a schematic diagram of the structure of the duct embedded part in one embodiment of the present utility model;
[0010] Figure 2 This is a schematic diagram of the installation of the duct embedded part in one embodiment of the present utility model;
[0011] Figure 3 for Figure 2 A magnified view of region G in the middle.
[0012] The numbers in the diagram are as follows:
[0013] 1-Shaft; 2-Wall; 10-Embedded ductwork; 11-Ductwork fittings; 12-Connecting flange; 13-Water-stop ring; 20-Straight duct; 21-Duct flange; 30-Duct bend; 31-Bend flange. Detailed Implementation
[0014] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of a duct pre-embedded component provided by this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.
[0015] like Figure 1 As shown, the duct pre-embedded component 10 provided in this embodiment includes a duct component 11, connecting flanges 12 disposed at both ends of the duct component 11, and a water-stop wing ring 13 sleeved on the duct component 11. The water-stop wing ring 13 is located near the middle of the duct component 11 and is welded and fixed to the duct component. The size of the duct component matches the size of the duct to be spliced and installed, and the connecting flange matches the flange of the duct to be spliced and installed.
[0016] Combination Figures 1 to 3 As shown, during the construction of the roof ventilation shaft structure, the duct embedded part 10 is pre-fixed. The connecting flanges at both ends of the duct embedded part 10 are located on both sides of the wall 2, and the water-stop wing ring 13 is located inside the wall 2 of the shaft 1. By pre-embedding the water-stop wing ring 13 of the duct embedded part 10 inside the wall, the later filling material process can be avoided, and the risk of water seepage can be effectively reduced. The two ends of the duct embedded part 10 are connected to the straight duct 20 and the duct bend 30, respectively. The connecting flange 12 of the duct embedded part 10 is located outside the wall, which facilitates later connection with the bend flange 31 of the duct bend 30 and the duct flange 21 of the straight duct 20.
[0017] In one specific embodiment, the duct embedded part 10 is made of the same material as the straight duct 20 and the duct bend 30 to be spliced and installed, such as 1.2mm thick galvanized steel plate or 304 stainless steel plate.
[0018] In one specific embodiment, the water-stop wing plate of the duct embedded part 10 is formed by welding angle iron to form a closed structure. One side flange of the angle iron is attached to the outer wall of the duct part, and both ends are welded and fixed. The other side flange of the angle iron is inserted into the wall. This setting can improve the sealing effect between the water-stop wing plate and the duct part, and can also extend the seepage path and reduce the risk of seepage.
[0019] In one specific embodiment, the connecting flanges at both ends of the duct embedded part 10 are formed by welding angle iron to form a closed structure. One side flange of the angle iron is fitted and welded to the outer wall of the duct part, and a connecting hole is provided on the other side flange of the angle iron. The position of the connecting hole matches the position of the bolt hole of the flange of the duct to be spliced and installed.
[0020] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0021] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.
Claims
1. An air duct embedded member characterized by, The air pipe piece, the connecting flanges arranged at both ends of the air pipe piece, and the water stop wing ring sleeved on the air pipe piece are included.
2. The air pipe pre-embedded piece according to claim 1, characterized in that, The water stop wing plate of the air pipe pre-embedded piece is formed into a closed structure by welding angle irons, one side flange of the angle irons is attached to the outer pipe wall of the air pipe piece, and both ends of the angle irons are welded and fixed to the air pipe piece, and the other side flange of the angle irons is arranged perpendicularly to the air pipe piece.
3. The air pipe pre-embedded piece according to claim 1, characterized in that, The connecting flanges at both ends of the air pipe pre-embedded piece are formed into a closed structure by welding angle irons, one side flange of the angle irons is attached to and welded to the outer pipe wall of the air pipe piece, and the other side flange of the angle irons is provided with connecting holes, and the positions of the connecting holes are matched with the positions of bolt holes of the flanges of the air pipes to be spliced and installed.