A composite pipe quick-install sealing connection structure

Abstract

This application discloses a quick-install sealing connection structure for composite pipes, relating to the field of pipe connection technology. The connecting pipe fitting includes a pipe body and a hollow inner sealing insert disposed within the pipe body. A socket is formed between the inner walls at both ends of the pipe body and the outer walls at both ends of the inner sealing insert. A pipe connection assembly includes a pipe connection plug for installing the composite pipe body. The pipe connection plug is inserted into the socket to connect the composite pipe body to the connecting pipe fitting. Installing the composite pipe at both ends of the pipe assembly via the pipe connection assembly makes the connection of the composite pipe more convenient, facilitating subsequent maintenance by removing the pipe for maintenance at the connection point, thus improving the efficiency of disassembly and assembly. Simultaneously, the double-layer surround formed by the pipe body and the inner sealing insert provides protection for the connection point of the composite pipe.

Description

Technical Field

[0001] This application relates to the field of pipeline connection technology, and in particular to a composite pipeline quick-installation sealing connection structure. Background Technology

[0002] With rising living standards and increased health awareness, residents are demanding higher quality drinking water. Traditional tap water pipes are prone to secondary pollution during transport due to issues such as material defects, aging, and corrosion, affecting drinking water safety. Direct drinking water systems, as a high-quality drinking water supply method, have emerged to address this need. Their core principle lies in combining deep purification treatment with high-quality pipeline transportation to ensure that the water quality at the user's end meets direct drinking standards. As a key component of direct drinking water systems, the pipes play a crucial role in delivering purified water stably and safely to users. The selection of materials and technical performance directly affect the final quality of the drinking water and the reliability of the system, thus placing higher demands on the pipes' hygiene, corrosion resistance, hydraulic performance, and service life.

[0003] Steel-plastic composite drinking water pipes have an inner layer of stainless steel or other metals and an outer layer of PVC, PE, PP or other plastics. They are made by a composite process and combine the properties of metal and plastic. They are designed specifically for drinking water systems and are currently a good solution for drinking water or water supply. However, in the current process of connecting steel-plastic composite pipes, most pipes are connected by heat fusion, which results in low connection efficiency and makes it inconvenient for maintenance personnel to disassemble the pipes for maintenance at the connection points.

[0004] Therefore, there is a need to provide a quick-install sealing connection structure for composite pipes that can improve the efficiency of disassembly and assembly at composite pipe connections. Utility Model Content

[0005] The main purpose of this application is to provide a quick-installation sealing connection structure for composite pipes, which aims to solve the technical problem of low efficiency in disassembly and assembly of existing composite pipe connections.

[0006] To achieve the above objectives, this application provides a composite pipe quick-install sealing connection structure, comprising: A connecting pipe fitting, the connecting pipe fitting including a pipe fitting body and an inner sealing insert disposed in the pipe fitting body and arranged in a hollow manner, wherein a socket is formed between the inner walls at both ends of the pipe fitting body and the outer walls at both ends of the inner sealing insert. A pipe connection assembly, the pipe connection assembly including a pipe connection plug for installing a composite pipe body, the pipe connection plug being inserted into a socket to connect the composite pipe body to a connecting fitting.

[0007] Optionally, the pipe connection assembly further includes a rotating connecting sleeve, which is rotatably fitted onto the pipe connection plug. The outer wall of the rotating connecting sleeve is provided with a locking block, and both ends of the pipe fitting body are provided with connecting grooves for engaging with the locking block. The connecting grooves are L-shaped.

[0008] Optionally, multiple locking blocks are provided and evenly distributed on the outer wall of the rotating connecting sleeve, and multiple connecting grooves are provided and evenly distributed on the side wall of the pipe body, with each connecting groove corresponding to a locking block.

[0009] Optionally, the inner wall of the pipe fitting body is provided with a mounting ring platform for installing an inner sealing insert in the middle part, and the outer wall of the inner sealing insert is provided with two annular limiting bosses. The two limiting bosses are respectively attached to the two sides of the mounting ring platform to limit the axial movement of the inner sealing insert.

[0010] Optionally, a sealing gasket is provided at the end of the pipe connector. The end face of the sealing gasket away from the pipe connector is attached to the side wall of the mounting ring. The inner ring of the sealing gasket is attached to the outer wall of the limiting boss, and the outer ring of the sealing gasket is attached to the inner wall of the pipe body.

[0011] Optionally, the width of the sealing gasket is greater than the thickness of the sidewall of the pipe connector, and the portion of the sealing gasket extending beyond the sidewall of the pipe connector fits against the end face of the rotating connector sleeve and the composite pipe body.

[0012] Optionally, the sealing gasket is attached to the end face of the composite pipe body away from the mounting ring and the outer wall of the limiting boss.

[0013] Optionally, the outer wall of the inner sealing insert is provided with an interference guide section located outside the limiting boss, and the diameter of the interference guide section gradually decreases in the direction away from the limiting boss.

[0014] Optionally, the outer wall of the inner sealing insert is provided with multiple sealing rings.

[0015] Optionally, the length of the inner sealing insert is greater than the length of the pipe body and both ends extend beyond the pipe body.

[0016] The beneficial effects achieved by this application are as follows: the composite pipe is installed at both ends of the pipe assembly through the pipe connection component, and the composite pipe is connected together, which makes the connection of the composite pipe more convenient and facilitates the subsequent maintenance personnel to disassemble the pipe and maintain the pipe connection. This can improve the efficiency of disassembly and assembly. At the same time, the double-layer ring formed by the pipe body and the inner sealing insert can protect the connection of the composite pipe, and can increase the strength of the connection of the composite pipe while providing a sealing effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of a composite pipe quick-install sealing connection structure according to Embodiment 1 of this application; Figure 2 This is an exploded view of a composite pipe quick-installation sealing connection structure according to Embodiment 1 of this application. Figure 1 ; Figure 3 This is an exploded view of a composite pipe quick-installation sealing connection structure according to Embodiment 1 of this application. Figure 2 ; Figure 4 This is a cross-sectional view of a composite pipe quick-install sealing connection structure according to Embodiment 1 of this application; Figure 5 for Figure 4 Enlarged view of section A; Figure 6 This is a schematic diagram of the pipe fitting body in a composite pipe quick-install sealing connection structure according to Embodiment 1 of this application; Figure 7 This is a schematic diagram of a composite pipe quick-install sealing connection structure for connecting three or more pipes, as described in Embodiment 1 of this application. Figure 8 This is a schematic diagram of the structure of a composite pipe quick-install sealing connection structure for connecting a pipe at a bend, according to Embodiment 1 of this application. Figure 9 This is a schematic diagram of a composite pipe quick-install sealing connection structure according to Embodiment 2 of this application; Figure 10 This is a cross-sectional view of a composite pipe quick-install sealing connection structure according to Embodiment 2 of this application.

[0019] Figure label: 1-Connecting pipe fitting, 11-Pipe fitting body, 111-Connecting groove, 112-Mounting ring platform, 12-Inner sealing insert, 121-Limiting boss, 122-Interference fit guide section, 123-Sealing ring, 2-Pipe connection assembly, 21-Pipe connection plug, 211-Sealing gasket, 22-Rotating connecting sleeve, 221-Clamping block, 3-Composite pipe body.

[0020] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0023] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0025] Example 1 See attached document Figure 1-6This embodiment provides a quick-install sealing connection structure for composite pipes, including a connecting fitting 1 and a pipe connection assembly 2. The connecting fitting 1 includes a fitting body 11 and an inner sealing insert 12 disposed inside the fitting body 11 and arranged hollowly. A socket is formed between the inner walls at both ends of the fitting body 11 and the outer walls at both ends of the inner sealing insert 12. The outer wall of the middle section of the inner sealing insert 12 is fixedly connected to the inner wall of the middle section of the fitting body 11, and the connection point forms the bottom of the socket. The inner sealing insert 12 is integrally formed and made of metal material, including but not limited to stainless steel, brass, etc. The pipe connection assembly 2 includes a pipe connection plug 21 for installing the composite pipe body 3. The pipe connection plug 21 is used to insert into the socket to connect the composite pipe body 2 to the connecting fitting 11. The pipe connection plug 21 is sleeved on the composite pipe body 2 and fixed by adhesive or heat fusion.

[0026] The composite pipe body 3 is installed at both ends of the pipe assembly 1 through the pipe connection component 2, connecting the composite pipe bodies 3 together. This makes the connection of the composite pipe bodies 3 more convenient and also makes it easier for subsequent maintenance personnel to disassemble the pipes and maintain the connection of the composite pipe bodies 3, thereby improving the efficiency of disassembly and assembly. At the same time, the double-layer surround formed by the pipe fitting body 11 and the inner sealing insert 12 can protect the connection of the composite pipe bodies 3. While providing a sealing function, it can also increase the strength of the connection of the composite pipe bodies 3, preventing damage to the connection of the composite pipe bodies 3.

[0027] As an optional implementation, the pipe connection assembly 2 also includes a rotating connection sleeve 22, which is rotatably fitted onto the pipe connection plug 21. The outer wall of the rotating connection sleeve 22 is provided with a locking block 221. Both ends of the pipe body 11 are provided with connecting grooves 111 for engaging with the locking block 221. The connecting grooves 111 are L-shaped and include a guide section formed by an opening on the end face of the pipe body 11 and a locking section perpendicular to the guide section.

[0028] During installation, the rotating connecting sleeve 22 is placed on the pipe connecting plug 21, allowing the rotating connecting sleeve 22 to rotate on the pipe connecting plug 21. The pipe connecting plug 21 is then inserted into the socket. At the same time, the locking block 221 is aligned with the L-shaped connecting groove 111, so that the locking block 221 is inserted into the guide section of the connecting groove 111. When the locking block 221 moves to the bottom of the guide section, the rotating connecting sleeve 22 is rotated, so that the locking block 221 moves into the locking section of the connecting groove 111, connecting the composite pipe body 3 together. The rotating connecting sleeve 22 works in conjunction with the connecting groove 111 on the pipe fitting body 11, making it more convenient and quick to connect and disconnect the composite pipe body 3, achieving a quick-disconnect function.

[0029] As an optional implementation, multiple locking blocks 221 are provided and evenly distributed on the outer wall of the rotating connecting sleeve 22, and multiple connecting grooves 111 are provided and evenly distributed on the side wall of the pipe body 111. The connecting grooves 111 correspond one-to-one with the locking blocks 221. The even distribution of locking blocks 221 and connecting grooves 111 can make the connection between the composite pipe body 3 and the connecting pipe 1 more stable. When subjected to water impact, the impact force can be evenly distributed at the connection, reducing the possibility of uneven stress causing the pipe connection to fall off and break. In this embodiment, three locking blocks 221 and three connecting grooves 111 are provided.

[0030] As an optional implementation, the inner wall of the pipe body 11 is provided with a mounting ring platform 112 for installing the inner sealing insert 12 in the middle. The outer wall of the inner sealing insert 12 is provided with two annular limiting protrusions 121. The two limiting protrusions 121 are respectively attached to the two sides of the mounting ring platform 112 to limit the axial movement of the inner sealing insert 12. The limiting protrusions 121 on the inner wall of the inner sealing insert 12 form a clamping state with the mounting ring platform 112, which can fix the inner sealing insert 12 in the connecting pipe 11.

[0031] As an optional implementation, a sealing gasket 211 is provided at the end of the pipe connector 21. The end face of the sealing gasket 211 away from the pipe connector 21 is attached to the side wall of the mounting ring 112. The inner ring of the sealing gasket 211 is attached to the outer wall of the limiting boss 121, and the outer ring of the sealing gasket 211 is attached to the inner wall of the pipe fitting body 11. After the pipe connector 21 is inserted into the socket, the sealing gasket 211 is pressed against the side wall of the mounting ring 112. The sealing gasket 211 can seal the connection gap between the pipe connector 21 and the mounting ring 112, which can enhance the sealing effect at the connection.

[0032] As an optional implementation, the width of the sealing gasket 211 is greater than the thickness of the side wall of the pipe connector 21. The portion of the sealing gasket 211 extending beyond the side wall of the pipe connector 21 fits against the end faces of the rotating connecting sleeve 22 and the composite pipe body 3. During installation, the rotating connecting sleeve 22 is fitted onto the pipe connector 21, so that the end faces of the rotating connecting sleeve 22 and the composite pipe body 3 fit against the sealing gasket 211. The end of the rotating connecting sleeve 22 presses the sealing gasket 211 tightly, which can limit the composite pipe body 3 and prevent it from coming out of the connecting fitting 1. After installation, the rotating connecting sleeve 22, the pipe connector 21, and the composite pipe body 3 together press the sealing gasket 211 against the side wall of the mounting ring platform 112, thereby enhancing the sealing effect.

[0033] As an optional implementation, the sealing gasket 211 is attached to the end face away from the mounting ring 112 and the outer wall of the limiting boss 121, and the end face of the composite pipe body 3 is in contact with the connection between the limiting boss 121 and the sealing gasket 211, so that the end face of the composite pipe body 3 can form a sealing state with the sealing gasket 211 and the limiting boss 121.

[0034] As an optional implementation, the outer wall of the inner sealing insert 12 is provided with an interference guide section 122 located outside the limiting boss 121. The diameter of the interference guide section 122 gradually decreases in the direction away from the limiting boss 121. The interference guide section 122 forms an equipotential design for the metal pipe connection system, which can eliminate the potential difference between the water supply pipe and other conductive bodies, avoid the risks of electric shock, electrochemical corrosion and other risks, and ensure the safety of water and electricity use.

[0035] As an optional implementation, the outer wall of the inner sealing insert 12 is provided with a plurality of sealing rings 123. The sealing rings 123 are located within the socket. In this embodiment, at least two inner sealing rings 123 are provided at each end of the inner sealing insert 12. The sealing rings 123 can seal the inner wall of the composite pipe body 3 and the outer wall of the inner sealing insert 12. At the same time, the setting of the sealing rings 123 can also provide an interference fit when the composite pipe body 3 is installed, so that the composite pipe body 3 will squeeze the sealing rings 123 after being inserted into the socket. While squeezing the sealing rings 123, the composite pipe body 3 can be more firmly installed, reducing the possibility of loosening. At the same time, in order to prevent the sealing rings 123 from moving on the inner sealing insert 12 due to the squeezing of the sealing rings 123 during installation, the inner sealing insert 12 is provided with a sealing groove. The sealing rings 123 are installed in the sealing groove, which can limit the sealing rings 123 and prevent them from moving.

[0036] As an optional implementation, the length of the inner sealing insert 12 is greater than the length of the pipe body 11 and extends beyond the pipe body 11 at both ends. In this embodiment, the length L extending beyond the pipe body 11 is ≥3mm. In other embodiments, the length L extending beyond the pipe body 11 can be ≤3mm. In short, the sealing groove is set on the part of the inner sealing insert 12 that extends beyond the pipe body 11. When connecting the composite pipe body 3, the end of the inner sealing insert 12 can be directly aligned and inserted into the end of the composite pipe body 3, which can be quickly positioned during installation. At the same time, the part of the inner sealing insert 12 that extends beyond the pipe body 11 will support the inner wall of the composite pipe body 3, making the connection strength of the composite pipe body 3 higher.

[0037] As an optional implementation, the ends of the pipe body 11 and the inner sealing insert 12 are provided with chamfers or rounded corners, which can make the opening of the socket open, making it easier for the composite pipe body 3 to be inserted into the socket. At the same time, the chamfer or rounded corner design can also guide the installation of the composite pipe body 3.

[0038] Reference Figure 7 This connection structure can be configured as a multi-port structure, capable of connecting three or more composite pipes simultaneously; see reference. Figure 8 Alternatively, the middle part of the structure can be bent to connect composite pipes at bends.

[0039] Example 2 Reference Figure 9 and Figure 10 The difference from Embodiment 1 is that the pipe connector 21 is omitted in this embodiment. The rotating connector 22 is fitted onto the composite pipe body 3 and fixed to the composite pipe body 3. During connection, the rotating connector 22 is inserted into the socket. When the locking block moves to the locking section, the composite pipe body 3 is rotated to move the locking block 221 within the locking section to form a locking structure, thus completing the connection of the composite pipe body 3.

[0040] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A composite pipe quick-installation sealing connection structure, characterized in that, include: A connecting pipe fitting, the connecting pipe fitting including a pipe fitting body and an inner sealing insert disposed in the pipe fitting body and arranged in a hollow manner, wherein a socket is formed between the inner walls at both ends of the pipe fitting body and the outer walls at both ends of the inner sealing insert. A pipe connection assembly, the pipe connection assembly including a pipe connection plug for installing a composite pipe body, the pipe connection plug being inserted into a socket to connect the composite pipe body to a connecting fitting.

2. A composite pipe quick coupling sealing connection structure according to claim 1, wherein, The pipe connection assembly also includes a rotating connecting sleeve, which is rotatably fitted onto the pipe connection plug. The outer wall of the rotating connecting sleeve is provided with a locking block, and both ends of the pipe body are provided with connecting grooves for engaging with the locking block. The connecting grooves are L-shaped.

3. A composite pipe quick-fit sealing connection structure according to claim 2, characterized in that, Multiple locking blocks are provided and evenly distributed on the outer wall of the rotating connecting sleeve, and multiple connecting grooves are provided and evenly distributed on the side wall of the pipe body. Each connecting groove corresponds to a locking block.

4. A composite pipe quick coupling sealing connection structure according to claim 2, wherein The inner wall of the pipe fitting body is provided with an installation ring platform for installing an inner sealing insert in the middle part. The outer wall of the inner sealing insert is provided with two annular limiting protrusions. The two limiting protrusions are respectively attached to the two sides of the installation ring platform to limit the axial movement of the inner sealing insert.

5. A composite pipe quick-fit sealing connection structure according to claim 4, characterized in that, A sealing gasket is provided at the end of the pipe connector. The end face of the sealing gasket away from the pipe connector is attached to the side wall of the mounting ring. The inner ring of the sealing gasket is attached to the outer wall of the limiting boss, and the outer ring of the sealing gasket is attached to the inner wall of the pipe body.

6. A composite pipe quick-fit sealing connection structure according to claim 5, characterized in that, The width of the sealing gasket is greater than the thickness of the side wall of the pipe connector plug, and the portion of the sealing gasket extending beyond the side wall of the pipe connector plug fits against the end face of the rotating connector sleeve and the composite pipe body.

7. A composite pipe quick-fit sealing connection structure according to claim 6, characterized in that, The sealing gasket is attached to the end face of the composite pipe body away from the mounting ring and the outer wall of the limiting boss.

8. A composite pipe quick-fit sealing connection structure according to claim 4, characterized in that, The outer wall of the inner sealing insert is provided with an interference guide section located outside the limiting boss, and the diameter of the interference guide section gradually decreases in the direction away from the limiting boss.

9. A composite pipe quick coupling sealing connection structure as claimed in claim 1, wherein, The outer wall of the inner sealing insert is provided with multiple sealing rings.

10. The composite pipe quick-fit sealing connection structure according to claim 1, characterized in that, The length of the inner sealing insert is greater than the length of the pipe body and extends beyond the pipe body at both ends.

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