Pipe socket joint and pipe arrangement

Abstract

The utility model relates to pipeline technical field discloses a pipeline socket joint, include: socket joint, the one end of socket joint is provided with the first pipeline connecting portion for connecting with pipeline, the other end is provided with the spigot part, the outer wall of spigot part is provided with several convex parts, the outer wall of spigot part is provided with several first recesses, socket joint, the one end of socket joint is provided with the second pipeline connecting portion for connecting with pipeline, the other end is provided with the socket part, the distance from the inner wall of spigot part to the inner wall of first pipeline connecting portion is greater than the distance from socket part to the inner wall of second pipeline connecting portion, the length of socket part is equal with the length of spigot part, the inner wall of socket part is provided with several second recesses, when socket joint inserts socket joint, socket joint and socket joint enclose cavity, socket part is provided with through -hole, through -hole is through the outer wall to the inner wall of socket part, through -hole is provided with corresponding sealing element, and through -hole is used for injecting adhesive to the cavity.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, and in particular to a pipeline socket joint and pipeline device. Background Technology

[0002] Pipe socket joints, as a key component widely used in pipe connections, have the core requirements of achieving efficient sealing, stable connection, and convenient installation. Traditional pipe socket joints typically employ mechanical clamping or a single sealing structure, such as direct insertion of the spigot and socket, using raised ribs or rubber sealing rings to achieve fixation and leak prevention.

[0003] However, joints relying solely on mechanical clamping are prone to loosening during long-term use due to thermal expansion and contraction of the pipeline, vibration, or external impact. This is especially true in high-pressure or large-diameter pipeline scenarios, where the pull-out resistance of traditional clamping structures is insufficient to meet engineering requirements. Patent CN201910260500.1 describes a polyolefin drainage pipe with an FRD double-seal instant detection socket joint. This patent further seals the socket by injecting sealant into the through-hole. This method relies on sealant and a sealing ring to clamp the joint with a stop block, lacking structural support to share axial force, making it susceptible to detachment due to sealing ring aging or stop block deformation. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to address the issues of insufficient stability and poor pressure-bearing capacity at the connection points of existing pipe socket joints.

[0005] To solve the above-mentioned technical problems, this utility model provides a pipe socket joint, characterized in that the pipe socket joint comprises:

[0006] A plug connector, wherein one end of the plug connector is provided with a first pipe connection part for connecting to a pipe, and the other end is provided with a plug part, wherein the outer wall of the plug part is provided with a plurality of protrusions and a plurality of first grooves;

[0007] A socket joint, wherein one end of the socket joint is provided with a second pipe connection part for connecting to a pipe, and the other end is provided with a receiving part, wherein the distance from the inner wall of the insertion part to the inner wall of the first pipe connection part is greater than the distance from the receiving part to the inner wall of the second pipe connection part, the length of the receiving part is equal to the length of the insertion part, and the inner wall of the receiving part is provided with a plurality of second grooves.

[0008] When the socket connector is inserted into the socket connector, the socket connector and the socket connector form a cavity. The receiving part is provided with a through hole, which extends from the outer wall to the inner wall of the receiving part. The through hole is provided with a corresponding sealing element and is used to inject adhesive into the cavity.

[0009] Furthermore, at least one of the plurality of protrusions is provided with a chamfer.

[0010] Furthermore, the positions of the first groove and the second groove correspond to each other.

[0011] Furthermore, an annular sealing ring is provided between the surface of the protrusion and the receiving part.

[0012] Furthermore, the sealing ring is made of a waterproof and non-slip material.

[0013] Furthermore, the adhesive is a foam adhesive.

[0014] Furthermore, when the spigot is inserted into the socket, the inner wall of the second pipe connection is flush with the inner wall of the spigot.

[0015] In another aspect of this utility model, a pipe device is provided, the pipe device including a pipe body and a pipe socket joint as described in any of the above claims, the pipe body being connected to the first pipe connection portion and / or the second pipe connection portion, the pipe body including an inner layer of the pipe body and an outer layer of the pipe body, and a metal layer being disposed between the inner layer of the pipe body and the outer layer of the pipe body.

[0016] Furthermore, the metal layer is mesh-like and extends axially between the inner layer and the outer layer of the pipe body.

[0017] Compared with the prior art, the advantages of this utility model of pipe socket joint are as follows:

[0018] The protrusion and first groove on the outer wall of the spigot of this invention cooperate with the second groove on the inner wall of the socket, and the adhesive filling allows the pipe socket joint to better disperse stress when under pressure, improving the overall pressure resistance. It is especially suitable for high-pressure or large-diameter pipeline scenarios. When the adhesive is filled into the cavity, the adhesive forms a whole in the cavity. Due to the first and second grooves, the adhesive penetrates into the first and second grooves. When the adhesive solidifies in the cavity, the first and second grooves and the solidified adhesive form a snap-fit ​​effect, increasing the snap-fit ​​strength between the spigot and socket joints. The protrusion also allows the adhesive to form a shape that adapts to it in the cavity. When the adhesive solidifies in the cavity, the protrusion and the solidified adhesive form a snap-fit ​​effect, further increasing the axial compressive strength of the socket joint and ensuring that it can maintain stable connection performance under complex working conditions. Injecting adhesive into the cavity, after curing, further strengthens the connection between the spigot and socket joints, making them a unified whole. This distributes axial forces and prevents detachment due to sealing ring aging or block deformation. The first and second grooves allow stress to be dispersed in multiple directions. When pressure is applied, stress is not only transmitted on the contact surface between the spigot and socket joints but also dispersed through the interlocking structure of the grooves and adhesive, as well as the shape of the grooves themselves. This prevents excessive stress concentration in localized areas and solves the problems of insufficient connection stability and poor pressure resistance in existing pipe spigot and socket joints. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the pipe socket joint provided in this embodiment of the present invention when it is not plugged in;

[0020] Figure 2 This is a schematic diagram of the pipe socket joint provided in this embodiment of the present invention during the insertion process;

[0021] Figure 3 yes Figure 2 A magnified view of a portion of the image;

[0022] Figure 4 This is a cross-sectional view of the pipeline device provided in an embodiment of the present utility model.

[0023] In the figure, 100 is a spigot connector; 110 is the first pipe connection part; 120 is a plug part; 130 is a protrusion; 140 is the first groove; 200 is a socket connector; 210 is the second pipe connection part; 220 is a receiving part; 230 is the second groove; 240 is a through hole; 300 is a cavity; 400 is the pipe body; and 410 is a metal layer. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope. It should be noted that, unless otherwise specifically stated, the relative arrangement and numerical values ​​of the components and steps described in these examples do not limit the scope of this utility model.

[0025] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0026] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0027] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0029] like Figure 1-3 As shown, this utility model embodiment provides a pipe socket joint, the pipe socket joint comprising:

[0030] A plug connector 100, one end of which is provided with a first pipe connection part 110 for connecting to a pipe, and the other end is provided with a plug part 120. The outer wall of the plug part 120 is provided with a plurality of protrusions 130 and a plurality of first grooves 140.

[0031] A socket joint 200 has a second pipe connection portion 210 for connecting to a pipe at one end and a receiving portion 220 at the other end. The distance from the inner wall of the insertion portion 120 to the inner wall of the first pipe connection portion 110 is greater than the distance from the receiving portion 220 to the inner wall of the second pipe connection portion 210. The length of the receiving portion 220 is equal to the length of the insertion portion 120. The inner wall of the receiving portion 220 is provided with a plurality of second grooves 230.

[0032] When the socket connector 100 is inserted into the socket connector 200, the socket connector 100 and the socket connector 200 form a cavity 300. The receiving part 220 is provided with a through hole 240, which extends from the outer wall to the inner wall of the receiving part 220. The through hole 240 is provided with a corresponding sealing element and is used to inject adhesive into the cavity 300.

[0033] The spigot joint 100 has a first pipe connection portion 110 at one end for connecting to a pipe. In practical applications, the first pipe connection portion 110 can be connected to the pipe in various ways, such as welding, which provides a strong connection and ensures that the pipe and spigot joint 100 will not easily loosen or leak; threaded connection facilitates disassembly and installation, making it convenient for pipe maintenance or replacement; thermofusion connection utilizes the properties of thermoplastic plastics to fuse the pipe and spigot joint 100 together at high temperature, resulting in good sealing. The other end of the spigot joint 100 is a plug portion 120, the outer wall of which has several protrusions 130 and several first grooves 140. When the protrusions 130 mate with the socket joint 200, they rub against the inner wall of the receiving portion 220 of the socket joint 200, increasing the snap-fit ​​strength and friction between the spigot joint 100 and the socket joint 200, making the connection more stable and less prone to loosening due to external factors. The first groove 140 provides space for the adhesive to fill and fit. When the adhesive is injected into the cavity 300 formed by the socket joint 100 and the spigot joint 200, the adhesive will seep into the first groove 140. After the adhesive solidifies, the first groove 140 and the solidified adhesive will form a tight snap-fit ​​effect, which further enhances the stability and sealing performance of the connection.

[0034] The socket joint 200 has a second pipe connection portion 210 at one end for connecting to another pipe section. The connection method is similar to the first pipe connection portion 110, and can be achieved through welding, threaded connection, or heat fusion to allow the pipe system to extend smoothly. The other end of the socket joint 200 is a receiving portion 220. The distance from the inner wall of the insertion portion 120 to the inner wall of the first pipe connection portion 110 is greater than the distance from the inner wall of the receiving portion 220 to the inner wall of the second pipe connection portion 210. This design allows the spigot joint 100 to be smoothly inserted into the socket joint 200, and after insertion, a certain cavity 300 is formed between the two, facilitating subsequent adhesive injection. The length of the receiving portion 220 is equal to the length of the insertion portion 120, ensuring the stability of the insertion and allowing the spigot joint 100 and the socket joint 200 to fully cooperate. The inner wall of the receiving part 220 is provided with several second grooves 230. When the spigot 100 is inserted into the socket 200, the second grooves 230 correspond to the first grooves 140 of the spigot 120, providing more filling and snap-fit ​​positions for the adhesive. After the adhesive penetrates into the first grooves 140 and the second grooves 230, it solidifies to form an additional snap-fit ​​structure, enhancing the connection strength between the spigot 100 and the socket 200, and improving the overall pressure resistance and sealing performance.

[0035] Specifically, when the plug connector 100 is inserted into the socket connector 200, the plug connector 100 and the socket connector 200 form a cavity 300. At this time, the protrusion 130 of the plug portion 120 contacts and rubs against the inner wall of the receiving portion 220, providing initial fixation. Simultaneously, the first groove 140 and the second groove 230 correspond to each other, providing space for the adhesive to fill. The receiving portion 220 is provided with a through hole 240, which extends from the outer wall to the inner wall of the receiving portion 220, and the through hole 240 is provided with a corresponding sealing element. When needed, adhesive can be injected into the cavity 300 through the through hole 240, and the adhesive will fill the cavity 300 and the first groove 140 and the second groove 230. After the adhesive solidifies, the protrusion 130 and the solidified adhesive form a snap-fit ​​effect, and the first groove 140 and the second groove 230 also form a tight snap-fit ​​structure with the solidified adhesive, making the spigot joint 100 and the socket joint 200 a tighter whole, jointly bearing the pressure inside the pipeline and the external force.

[0036] Specifically, in actual operation, firstly, the first pipe connection portion 110 of the spigot joint 100 is connected to a section of pipe using a suitable method (such as welding, threaded connection, or heat fusion connection), while simultaneously connecting the second pipe connection portion 210 of the socket joint 200 to another section of pipe. Then, the insertion portion 120 of the spigot joint 100 is inserted into the receiving portion 220 of the socket joint 200, ensuring proper insertion. Next, adhesive is slowly injected into the cavity 300 formed by the spigot joint 100 and the socket joint 200 through the through-hole 240 on the receiving portion 220 using an injection device. After injection, the through-hole 240 is sealed with a sealant to prevent adhesive leakage. After the adhesive has cured, a stable connection is achieved between the spigot joint 100 and the socket joint 200.

[0037] Specifically, the friction between the protrusion 130 and the inner wall of the receiving part 220, and the snap-fit ​​structure between the first groove 140 and the second groove 230 and the solidified adhesive, make the connection between the spigot joint 100 and the socket joint 200 more secure. This effectively resists loosening caused by thermal expansion and contraction of the pipeline, vibration, or external impact, ensuring the long-term stable operation of the pipeline system. The combined effect of multiple snap-fit ​​structures and adhesive filling allows the pipe spigot and socket joint to better disperse stress when under pressure, improving the overall pressure-bearing capacity, especially suitable for high-pressure or large-diameter pipeline scenarios. The adhesive filling of the cavity 300 and the first groove 140 and the second groove 230 forms a dense sealing layer, effectively preventing media leakage and improving the sealing performance of the pipeline system. The spigot joint 100 and the socket joint 200 are simple and easy to install, facilitating operation by construction personnel. Injecting adhesive through the through hole 240 is also convenient, requiring no complex installation process and improving construction efficiency.

[0038] In this embodiment of the invention, the protrusion 130 and the first groove 140 on the outer wall of the insertion part 120 cooperate with the second groove 230 on the inner wall of the receiving part 220, and the filling of adhesive allows the pipe socket joint to better disperse stress when under pressure, improving the overall pressure-bearing capacity. This is especially suitable for high-pressure or large-diameter pipe scenarios. When the adhesive is used to fill the cavity 300, the adhesive will form a whole in the cavity 300. Due to the provision of the first groove 140 and the second groove 230, the adhesive will penetrate into the first groove 140. The first groove 140 and the second groove 230, when the adhesive solidifies in the cavity 300, will form a snap-fit ​​effect with the solidified adhesive, increasing the snap-fit ​​strength between the spigot joint 100 and the socket joint 200. The protrusion 130 will also allow the adhesive to form a shape compatible with it in the cavity 300. When the adhesive solidifies in the cavity 300, the protrusion 130 will form a snap-fit ​​effect with the solidified adhesive, further increasing the axial compressive strength of the spigot joint and ensuring stable connection performance under complex working conditions. Injecting adhesive into the cavity 300, after curing, further strengthens the connection between the spigot joint 100 and the socket joint 200, making them a unified whole, sharing axial force, and avoiding detachment problems caused by aging of the sealing ring or deformation of the retaining block. The design of the first groove 140 and the second groove 230 allows stress to be dispersed in multiple directions. When pressure is applied, the stress is not only transmitted on the contact surface between the spigot joint 100 and the socket joint 200, but also dispersed through the snap-fit ​​structure of the groove and the adhesive, as well as the shape of the groove itself. This avoids excessive concentration of stress in local areas and solves the problems of insufficient connection stability and poor pressure bearing capacity of existing pipe spigot joints.

[0039] In an optional embodiment of the present invention, at least one of the plurality of protrusions 130 is provided with a chamfer.

[0040] Specifically, during the insertion of the spigot 100 into the socket 200, the protrusion 130 encounters resistance when contacting the inner wall of the receiving portion 220. With a chamfer, the front end of the protrusion 130 becomes smoother, allowing for smoother insertion of the spigot 100 into the socket 200, reducing jamming and obstruction, lowering construction difficulty, and improving efficiency. Without the chamfer, the protrusion 130 might experience severe collisions and friction with the inner wall of the receiving portion 220 during insertion, potentially damaging both and affecting the joint's sealing and connection strength. The chamfer buffers this collision and friction, reducing wear and extending the joint's lifespan. Furthermore, when the spigot 100 is inserted into the socket 200 and subjected to pressure, the chamfer alters the stress distribution between the protrusion 130, the adhesive, and the inner wall of the receiving portion 220. This ensures that stress is not concentrated at the sharp edge of the protrusion 130, but is more evenly distributed throughout the protrusion 130 and the surrounding structure, further improving the joint's pressure-bearing capacity and stability.

[0041] In an optional embodiment of this utility model, the first groove 140 and the second groove 230 are positioned opposite each other.

[0042] Specifically, when the spigot 100 is inserted into the socket 200, if the first groove 140 and the second groove 230 are aligned, the adhesive, when injected into the cavity 300 formed by the spigot 100 and the socket 200, can simultaneously fill both grooves. After solidification, the adhesive forms a tight interlocking structure with the first groove 140 and the second groove 230. This interlocking structure is similar to the relationship between a key and a lock, greatly increasing the connection strength between the spigot 100 and the socket 200. For example, it can be imagined as two interlocking puzzle pieces, tightly bound together by the filling and solidification of the adhesive, making them difficult to separate. This interlocking effect effectively resists the axial tensile force generated during the operation of the piping system.

[0043] When the pipeline is subjected to pressure or external force, stress will concentrate at the connection between the spigot joint 100 and the socket joint 200. The first groove 140 and the second groove 230 are positioned opposite each other, allowing the interlocking structure formed by the adhesive to better disperse stress. The stress is not only transmitted on the contact surface between the spigot joint 100 and the socket joint 200, but also dispersed in multiple directions through the interlocking structure of the grooves and the adhesive, as well as the shape of the grooves themselves.

[0044] In an optional embodiment of this utility model, an annular sealing ring is provided between the surface of the protrusion 130 and the receiving portion 220.

[0045] In an optional embodiment of this invention, the sealing ring is made of a waterproof and non-slip material.

[0046] In an optional embodiment of this invention, the adhesive is a foam adhesive.

[0047] Specifically, irregular gaps and shapes may exist in the cavity 300 between the spigot joint 100 and the socket joint 200. The expanding foam expands rapidly after injection, fully filling these complex gaps to form a tight seal. For example, like filling cracks in a wall with expanding foam, it can adapt to various irregular shapes, completely filling the gaps.

[0048] Temperature changes cause pipe materials to expand and contract, creating stress at the joints. Expanding foam has a certain degree of toughness, allowing it to adapt to these changes to some extent. Its deformation helps alleviate stress and prevents joint damage due to stress concentration.

[0049] When expanding foam is injected into the cavity 300 formed by the spigot joint 100 and the socket joint 200, it simultaneously fills the first groove 140 and the second groove 230. After solidification, the expanding foam forms a tight interlocking structure with the grooves, further enhancing the connection strength between the spigot joint 100 and the socket joint 200.

[0050] In an optional embodiment of this utility model, when the plug connector 100 is inserted into the socket connector 200, the inner wall of the second pipe connection portion 210 is flush with the inner wall of the plug portion 120.

[0051] In piping systems, fluid transport efficiency is affected by the smoothness and shape of the pipe's inner wall. When the inner wall of the second pipe connection 210 is flush with the inner wall of the insertion part 120, the fluid will not encounter significant protrusions or depressions when passing through the joint, thereby reducing friction and collision between the fluid and the pipe's inner wall and lowering fluid resistance. For example, when transporting liquids such as water and oil, flush inner walls allow the liquid to flow more smoothly, reducing energy loss and improving transport efficiency.

[0052] In another aspect of this utility model, a pipe device is provided, the pipe device including a pipe body 400 and a pipe socket joint as described in any of the above claims, the pipe body 400 being connected to the first pipe connection portion 110 and / or the second pipe connection portion 210, the pipe body 400 including an inner layer and an outer layer, and a metal layer 410 being disposed between the inner layer and the outer layer.

[0053] Furthermore, the metal layer 410 is mesh-like and extends axially between the inner layer and the outer layer of the pipe body 400. The first pipe body 400 and the second pipe body 400 serve as two parts of a pipe joint, forming a complete pipe joint through a socket connection. This achieves pipe extension and connection, meeting the needs of fluid transport. The insertion port of the first pipe body 400 is inserted into the socket of the second pipe body 400 for connection, and the two are tightly fixed by a snap-fit ​​connection between the protrusion 130 and the inner layer of the pipe.

[0054] The pipe body 400 can be made of corrosion-resistant and wear-resistant materials such as high-density polyethylene (HDPE) to ensure the durability and reliability of the pipe joint. The metal layer 410 can be made of high-strength and corrosion-resistant metal materials such as stainless steel, extending axially along the cavity 300 of the pipe body 400 to enhance the load-bearing capacity and service life of the joint. The stainless steel material is cut into a shape and size that matches the cavity 300 of the pipe body 400 to ensure that the metal layer 410 can fit tightly within the cavity 300. Several protrusions 130 are machined on the outer layer of the pipe body 400 through machining or molding. These protrusions 130 should be evenly distributed to ensure uniform contact with the inner layer of the pipe socket.

[0055] Specifically, the assembly process of the pipe spigot and socket in a pipe joint is a crucial step, ensuring the strength and sealing of the pipe connection. The assembly process is as follows: Align the pipe spigot with the pipe socket, ensuring that their axes are aligned. This is key to ensuring the straightness of the pipe and smooth fluid flow after assembly. Then, steadily insert the pipe spigot into the pipe socket. During insertion, the pipe should be kept stable to avoid skewing or twisting. As the pipe spigot is inserted, the protrusions 130 on its outer layer will gradually contact the inner layer of the pipe in the pipe socket. These protrusions 130 are designed to form a snap-fit ​​connection with the inner layer of the pipe socket, thereby ensuring the strength of the pipe joint. Continue inserting the pipe spigot until the protrusions 130 are fully in contact with the inner layer of the pipe socket and a stable snap-fit ​​connection is formed. At this point, a certain resistance can be felt, indicating that the snap-fit ​​connection has been formed. After the pipe spigot is fully inserted into the pipe socket, the connection strength of the joint should be checked. The pipe can be gently shaken to observe whether the joint is loose or detached. At the same time, the sealing of the joint should also be checked. Although socket joints inherently possess a certain degree of sealing performance, in certain applications where high sealing requirements are necessary, it may be required to apply sealant or use other sealing measures at the joint.

[0056] This invention effectively enhances the overall rigidity and deformation resistance of the pipe joint by setting an axially extending metal layer 410 within the cavity 300 between the inner and outer layers of the pipe. The metal layer 410, acting as a reinforcing skeleton, disperses internal pipe pressure, significantly improving pressure-bearing performance, making it particularly suitable for high-pressure fluid transportation scenarios. This invention utilizes a multi-point snap-fit ​​structure formed by the protrusion 130 on the outer layer of the pipe socket and the snap-fit ​​design on the inner layer of the pipe socket. This structure not only resists axial tensile and radial shear forces but also compensates for displacement caused by thermal expansion and contraction of the pipe through the deformation of the protrusion 130, preventing the joint from loosening and falling off. Simultaneously, the synergistic effect of the metal layer 410 and the pipe composite structure effectively suppresses material fatigue cracking caused by alternating pressure. The metal layer 410 provides rigid support to the inner layer of the pipe, preventing pipe wall collapse due to medium pressure and significantly reducing the risk of leakage. The snap-fit ​​connection eliminates the need for complex welding or flange fastening; rapid assembly is achieved through axial insertion, greatly improving installation efficiency and reducing construction difficulty.

[0057] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A pipe socket joint, characterized in that, The pipe socket joint includes: A plug connector, wherein one end of the plug connector is provided with a first pipe connection part for connecting to a pipe, and the other end is provided with a plug part, wherein the outer wall of the plug part is provided with a plurality of protrusions and a plurality of first grooves; A socket joint, wherein one end of the socket joint is provided with a second pipe connection part for connecting to a pipe, and the other end is provided with a receiving part, wherein the distance from the inner wall of the insertion part to the inner wall of the first pipe connection part is greater than the distance from the receiving part to the inner wall of the second pipe connection part, the length of the receiving part is equal to the length of the insertion part, and the inner wall of the receiving part is provided with a plurality of second grooves. When the socket connector is inserted into the socket connector, the socket connector and the socket connector form a cavity. The receiving part is provided with a through hole, which extends from the outer wall to the inner wall of the receiving part. The through hole is provided with a corresponding sealing element and is used to inject adhesive into the cavity.

2. The pipe socket joint according to claim 1, characterized in that, At least one of the protrusions is provided with a chamfer.

3. The pipe socket joint according to claim 1, characterized in that, The first groove and the second groove are positioned correspondingly.

4. The pipe socket joint according to claim 1, characterized in that, An annular sealing ring is provided between the surface of the protrusion and the receiving part.

5. The pipe socket joint according to claim 4, characterized in that, The sealing ring is made of a waterproof and non-slip material.

6. The pipe socket joint according to claim 3 or 4, characterized in that, The adhesive is a foam adhesive.

7. The pipe socket joint according to claim 1, characterized in that, When the spigot is inserted into the socket, the inner wall of the second pipe connection is flush with the inner wall of the spigot.

8. A pipeline device, characterized in that, The pipeline device includes a pipeline body and a pipeline socket joint as described in any one of claims 1-7. The pipeline body is connected to the first pipeline connection part and / or the second pipeline connection part. The pipeline body includes an inner layer and an outer layer, and a metal layer is disposed between the inner layer and the outer layer.

9. The pipeline device according to claim 8, characterized in that, The metal layer is in the form of a mesh, and the metal layer extends axially between the inner layer of the pipe body and the outer layer of the pipe body.

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