Composite pipe connecting device
By combining the semi-circular connector with the groove and using a fixing mechanism, the problems of complex composite pipe connections and poor sealing are solved, achieving fast and convenient connection and efficient sealing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNFENG PIPE IND
- Filing Date
- 2025-06-03
- Publication Date
- 2026-04-28
AI Technical Summary
Existing composite pipe connection methods are complex, requiring additional connectors and tools, increasing installation costs and time, and have poor sealing performance, making them prone to leakage.
The combination of a semi-circular connector and a semi-circular groove, along with a C-shaped fixing cover, serrated anti-slip protrusions, positioning blocks, and bolts, provides a quick and convenient connection method, and improves sealing performance through the first and second sealing rings.
It enables rapid connection of composite pipes, simplifies the installation process, provides strong fixing force to prevent loosening or displacement, and improves sealing performance, making it suitable for high-pressure or high-flow environments.
Smart Images

Figure CN224174727U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of composite pipe technology, and specifically to a composite pipe connecting device. Background Technology
[0002] In modern industrial and civil piping systems, composite pipes are widely used due to their excellent corrosion resistance, high strength, and lightweight properties. However, existing composite pipe connection methods have some shortcomings: firstly, the connection process is complex, requiring additional connectors and tools, which increases installation costs and time; secondly, the sealing performance is not ideal, making leakage prone to occur and affecting the reliability of the system.
[0003] Based on the above, this utility model proposes a composite pipe connection device, which can effectively solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a composite pipe connection device. This composite pipe connection device has a simple structure and is easy to use. Through the cooperation of a semi-circular connector and a semi-circular groove, pipe connection is quick and convenient, requiring no complex tools or accessories. The C-shaped fixing cover and serrated anti-slip protrusions of the fixing mechanism, combined with the use of positioning blocks and bolts, provide strong fixing force, preventing loosening or displacement of the pipe connection.
[0005] This utility model is achieved through the following technical solution:
[0006] A composite pipe connection device includes a composite pipe body, with connection end faces on both sides of the composite pipe body. A semi-circular connector is provided on one side of the composite pipe body, and a semi-circular groove matching the cross-section of the semi-circular connector is provided on the other side of the composite pipe body. The semi-circular groove is connected to a semi-circular recess, and the semi-circular connector can be directly inserted into the semi-circular recess. A positioning hole is provided near the connection end face of the composite pipe body. Two composite pipe bodies are combined to form a connection end, and a fixing mechanism is provided on the connection end.
[0007] The fixing mechanism includes a C-shaped fixing cover with serrated anti-slip protrusions on both sides inside the fixing cover. Multiple bolts are threaded to both sides of the fixing cover, and positioning blocks that match the positioning holes are provided on both sides of the bottom of the fixing cover.
[0008] The purpose of this invention is to provide a composite pipe connection device. This composite pipe connection device has a simple structure and is easy to use. Through the cooperation of a semi-circular connector and a semi-circular groove, pipe connection is quick and convenient, requiring no complex tools or accessories. The C-shaped fixing cover and serrated anti-slip protrusions of the fixing mechanism, combined with the use of positioning blocks and bolts, provide strong fixing force, preventing loosening or displacement of the pipe connection.
[0009] Preferably, a first sealing ring is provided on the connecting end face.
[0010] Preferably, a second sealing ring is provided on the connecting end face.
[0011] Preferably, the cross-section of the semi-circular connector is T-shaped.
[0012] Preferably, a limiting plate is provided at one of the connection points between the semi-circular slot and the semi-circular groove.
[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0014] The composite pipe connection device of this utility model has a simple structure and is easy to use. The semi-circular connector and the semi-circular groove make the pipe connection quick and convenient without complicated tools or accessories. The C-shaped fixing cover and the serrated anti-slip protrusion of the fixing mechanism, combined with the use of positioning blocks and bolts, provide strong fixing force to prevent the pipe connection from loosening or displacement. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the right-side structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the left-side structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the fixing mechanism described in this utility model;
[0019] Figure 5 This is a schematic diagram of the combined structure of the two composite tube bodies of this utility model. Detailed Implementation
[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.
[0021] Example 1:
[0022] like Figures 1 to 5As shown, this utility model provides a composite pipe connection device, including a composite pipe body 1. The composite pipe body 1 has connection end faces 2 on both sides. A semi-circular connector 3 is provided on one side of the composite pipe body 1, and a semi-circular groove 4 matching the cross-section of the semi-circular connector 3 is provided on the other side of the composite pipe body 1. The semi-circular groove 4 is connected to a semi-circular recess 5. The semi-circular connector 3 can be directly inserted into the semi-circular recess 5. A positioning hole 6 is opened near the connection end face 2 of the composite pipe body 1. Two composite pipe bodies 1 are combined to form a connection end. A fixing mechanism is provided on the connection end.
[0023] The fixing mechanism includes a C-shaped fixing cover 9. The fixing cover 9 has serrated anti-slip protrusions 10 on both sides inside. Multiple bolts 11 are threaded to both sides of the fixing cover 9. Positioning blocks 12 that match the positioning holes 6 are provided on both sides of the bottom of the fixing cover 9.
[0024] Example 2:
[0025] like Figures 1 to 5 As shown, this utility model provides a composite pipe connection device, including a composite pipe body 1. The composite pipe body 1 has connection end faces 2 on both sides. A semi-circular connector 3 is provided on one side of the composite pipe body 1, and a semi-circular groove 4 matching the cross-section of the semi-circular connector 3 is provided on the other side of the composite pipe body 1. The semi-circular groove 4 is connected to a semi-circular recess 5. The semi-circular connector 3 can be directly inserted into the semi-circular recess 5. A positioning hole 6 is opened near the connection end face 2 of the composite pipe body 1. Two composite pipe bodies 1 are combined to form a connection end. A fixing mechanism is provided on the connection end.
[0026] The fixing mechanism includes a C-shaped fixing cover 9. The fixing cover 9 has serrated anti-slip protrusions 10 on both sides inside. Multiple bolts 11 are threaded to both sides of the fixing cover 9. Positioning blocks 12 that match the positioning holes 6 are provided on both sides of the bottom of the fixing cover 9.
[0027] During installation, after the semi-circular connector 3 is inserted into the semi-circular groove 5, rotate the composite pipe body 1 where the semi-circular connector 3 is located so that the semi-circular connector 3 is inserted into the semi-circular slot 4 to complete the snap-fit. Then, align the positioning block 12 on the fixing cover 9 with the positioning hole 6 and insert it, and then tighten the bolt 11.
[0028] The connecting end face 2 is provided with a first sealing ring 7.
[0029] The first sealing ring 7 effectively prevents liquid or gas leakage at the connection and improves the sealing performance of the pipeline system.
[0030] Furthermore, in another embodiment, a second sealing ring 8 is provided on the connecting end face 2.
[0031] The second sealing ring 8 further enhances the sealing performance of the pipe connection, providing double protection; through the cooperation of the first sealing ring 7 and the second sealing ring 8, it can effectively cope with high pressure or high flow working environment and ensure the long-term stable operation of the pipeline system.
[0032] Furthermore, in another embodiment, the cross-section of the semi-circular connector 3 is T-shaped.
[0033] The T-shaped cross-section design not only improves the tightness of the fit between the semi-circular connector 3 and the semi-circular groove 5, but also enhances the stability and reliability of the connection; at the same time, the T-shaped cross-section can prevent the semi-circular connector 3 from slipping excessively during insertion to a certain extent.
[0034] Furthermore, in another embodiment, a limiting plate 13 is provided at one of the connection points between the semi-circular slot 4 and the semi-circular groove 5.
[0035] The design of the limiting plate 13 effectively prevents the semi-circular connector 3 from being inserted too far during the insertion process, thus improving the installation speed.
[0036] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use the composite pipe connection device of this utility model, and can produce the positive effects described in this utility model.
[0037] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.
[0038] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A composite pipe connection device, characterized in that: The composite pipe body includes a connecting end face on both sides. A semi-circular connector is provided on one side of the composite pipe body, and a semi-circular groove matching the cross-section of the semi-circular connector is provided on the other side of the composite pipe body. The semi-circular groove is connected to a semi-circular groove. The semi-circular connector can be directly inserted into the semi-circular groove. A positioning hole is provided near the connecting end face of the composite pipe body. Two composite pipe bodies are combined to form a connecting end. A fixing mechanism is provided on the connecting end. The fixing mechanism includes a C-shaped fixing cover with serrated anti-slip protrusions on both sides inside the fixing cover. Multiple bolts are threaded to both sides of the fixing cover, and positioning blocks matching the positioning holes are provided on both sides of the bottom of the fixing cover.
2. The composite pipe connection device according to claim 1, characterized in that: A first sealing ring is provided on the connecting end face.
3. The composite pipe connection device according to claim 2, characterized in that: A second sealing ring is provided on the connecting end face.
4. The composite pipe connection device according to claim 1, characterized in that: The cross-section of the semi-circular connector is T-shaped.
5. The composite pipe connection device according to claim 1, characterized in that: A limiting plate is provided at one of the connection points between the semi-circular slot and the semi-circular groove.