Special flange connecting piece for plug and plug connecting structure
By designing a special flange connector for duct plugs, and adopting a U-shaped structure and plug-in groove for installation, the problem of the lack of standardized flange connectors for duct plugs in the market has been solved, enabling the installation and airtightness guarantee of various duct plugs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG WODAT NEW MATERIALS CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-04-17
AI Technical Summary
There is a lack of standardized plug flange connectors on the market, and existing patents have limited application scenarios and complex structures.
A special flange connector for plugs was designed, comprising a first profile, a second profile, and a third profile, forming a U-shaped structure. It is installed by plugging in through a slot, and the airtightness is ensured by using metal and heat-insulating profiles. It is then fixedly connected to the flange of the duct body using a U-shaped clip.
It enables installation to adapt to various duct plugs, ensures airtightness, and simplifies structural design.
Smart Images

Figure CN224135460U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of duct flanges, specifically to a special flange connector for plugs and a plug connection structure. Background Technology
[0002] Traditional plugs are used to seal the ends of ducts, but there is currently no standardized plug flange on the market as a connector.
[0003] Among the existing patent documents, CN217382058U discloses a plug for a common plate flange duct. This solution is applied to common plate flange ducts, which has limited application scenarios and a relatively complex structure. Utility Model Content
[0004] To address the technical problems existing in the prior art, this utility model provides a special flange connector for plugs.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] This utility model is a flange connector for plugs, including a first profile and a second profile. The connecting end of the first profile is connected to the connecting end of the second profile. The mounting end of the first profile includes a straight plate and a folded plate that are perpendicular to each other. The mounting end of the second profile includes a vertical plate. The vertical plate and the folded plate are parallel to each other, and the straight plate is located between the folded plate and the vertical plate, so that the straight plate, the folded plate and the vertical plate form a plug groove for plug installation.
[0007] Furthermore, a third profile connects the first profile and the second profile, wherein the first profile and the second profile are both metal profiles, and the third profile is a thermal insulation profile.
[0008] Furthermore, the first profile, the third profile, and the second profile are connected sequentially along the extension direction of the insertion groove, so that the end cap flange connector has an overall U-shaped structure.
[0009] Furthermore, the outer side of the first profile is connected with a first bend, which is located at the joint between the connecting end and the mounting end of the first profile. The first bend is used to connect the flange on the duct body.
[0010] Furthermore, the first profile, the second profile, and the third profile are all integrally formed structures.
[0011] A plug connection structure employs the aforementioned plug-specific flange connector, in which the plug is inserted into the insertion groove for fixation, and the plug-specific flange connector is fixedly connected to the flange of the duct body.
[0012] Furthermore, the duct body flange is a thermally broken flange, and the thermal insulation part of the duct body flange is installed opposite to the third profile of the plug-specific flange connector.
[0013] Furthermore, the duct body flange is provided with a second bend, the position of which is opposite to the direction of the first bend, and also includes a U-shaped clamp for fixing the first bend and the second bend together.
[0014] The beneficial effects of this utility model are:
[0015] This utility model designs a special flange connector for duct plugs, which can be adapted to the installation of most duct plugs, and the plug-in installation method through the plug groove can also ensure airtightness. Attached Figure Description
[0016] 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:
[0017] Figure 1 This is a schematic cross-sectional view of a special flange connector for plugs according to this utility model.
[0018] Figure 2 This is a schematic diagram of the structure of the plug during installation of this utility model;
[0019] Figure 3 This is a utility model Figure 2 A schematic diagram of the connection structure between the plug-specific flange connector and the duct body flange. Detailed Implementation
[0020] 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.
[0021] This utility model embodiment provides a special flange connector for plugs, see reference. Figure 1 As shown, it includes a first profile 1 and a second profile 2. The connecting end of the first profile 1 is connected to the connecting end of the second profile 2. The mounting end of the first profile 1 includes a straight plate 4 and a folded plate 5 that are perpendicular to each other. The mounting end of the second profile 2 includes a vertical plate 6. The vertical plate 6 and the folded plate 5 are parallel to each other, and the straight plate 4 is located between the folded plate 5 and the vertical plate 6, so that the straight plate 4, the folded plate 5 and the vertical plate 6 form a plug groove for the installation of the plug.
[0022] Furthermore, in this embodiment, the plug is installed using a thermal break method, such as... Figure 1A third profile 3 connects the first profile 1 and the second profile 2. All three profiles—first profile 1, second profile 2, and third profile 3—are integrally molded structures. First profile 1 and second profile 2 are metal profiles, while third profile 3 is a heat-insulating profile made of rubber and plastic. The first profile 1, third profile 3, and second profile 2 are connected sequentially along the extension direction of the insertion groove, resulting in a U-shaped overall structure for the plug-specific flange connector.
[0023] Reference Figure 2 as well as Figure 3 As shown, where Figure 2 Point A is the plug, and point B is the duct body. The plug is inserted into the insertion slot for fixation and is fixedly connected to the duct body flange 002 via a special flange connector 001 for the plug, thus achieving installation.
[0024] For specific connection structures, please refer to... Figure 3 As shown, a first bend 7 is connected to the outer side of the first profile 1. The first bend 7 is located at the joint between the connecting end and the mounting end of the first profile 1, and is used to connect the flange on the duct body. A second bend is provided on the flange of the duct body. The position of the second bend is opposite to that of the first bend 7. A U-shaped clip 003 is also included to fix the first bend 7 and the second bend together.
[0025] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are 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 flange connector for plugs, comprising a first profile (1) and a second profile (2), wherein the connecting end of the first profile (1) is connected to the connecting end of the second profile (2), the mounting end of the first profile (1) comprises a straight plate (4) and a folded plate (5) perpendicular to each other, and the mounting end of the second profile (2) comprises a vertical plate (6), the vertical plate (6) and the folded plate (5) are parallel to each other, and the straight plate (4) is located between the folded plate (5) and the vertical plate (6), such that the straight plate (4), the folded plate (5) and the vertical plate (6) surround and form a plug groove for plug installation.
2. A flange connection for a plug according to claim 1, characterized in that A third profile (3) connects the first profile (1) and the second profile (2), wherein the first profile (1) and the second profile (2) are both metal profiles, and the third profile (3) is a heat-insulating profile.
3. A special flange connector for plugs according to claim 2, characterized in that, The first profile (1), the third profile (3), and the second profile (2) are connected sequentially along the extension direction of the insertion groove, so that the end cap flange connector has an overall U-shaped structure.
4. A flange connection for a plug according to claim 3, characterized in that The outer side of the first profile (1) is connected to a first bend (7). The first bend (7) is located at the joint between the connecting end and the installation end of the first profile (1). The first bend (7) is used to connect the flange on the duct body.
5. A flange connection for a plug according to claim 1, characterized in that The first profile (1), the second profile (2), and the third profile (3) are all integrally formed structures.
6. A plug connection structure characterized by comprising: The plug-specific flange connector as described in any one of claims 1-5 is used to insert the plug into the insertion groove and fix it, and the plug-specific flange connector is fixedly connected to the flange of the duct body.
7. A union structure according to claim 6, wherein: The duct body flange is a thermally broken flange, and the thermal insulation part of the duct body flange is installed opposite to the third profile (3) of the plug special flange connector.
8. A union structure according to claim 7, wherein The duct body flange is provided with a second bend, the position of which is opposite to the direction of the first bend (7). It also includes a U-shaped clip (003) for fixing the first bend (7) and the second bend together.
Citation Information
Patent Citations
Plug flange for common-plate flange air pipe
CN217382058U