A stable PE pipe joint

Abstract

The utility model discloses a kind of stable PE pipe joints of connection, including connector body, anti-loosening gland, sealing module, locking ring, the two ends of connector body are respectively provided with the socket cavity that is mutually through, the inner wall middle part of socket cavity is provided with limit step, the two ends of connector body are respectively provided with threaded tube, threaded tube is connected with sealing sleeve ring on sliding sleeve, the side of sealing sleeve ring is in abutment with connector body, anti-loosening gland is threadedly connected on threaded tube, and with the other side of sealing sleeve ring abutment connection, sealing module and locking ring are respectively arranged in anti-loosening gland, sealing module sleeve joint is connected at the port of threaded tube, locking ring is located sealing module side, and with sealing module abutment connection. The utility model aims at providing a kind of PE pipe joint, which is more stable, more reliable, more resistant to pull out and easy to install.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to a stable PE pipe connector. Background Technology

[0002] Polyethylene (PE) pipes are widely used in water supply and drainage, gas transmission, and agricultural irrigation due to their advantages such as corrosion resistance, light weight, and ease of construction. The reliability and safety of a pipeline system largely depend on the quality of the connections between pipes; therefore, the performance of pipe fittings is crucial.

[0003] Currently, common PE pipe connection methods include heat fusion, electrofusion, and mechanical connection. Mechanical connections are widely used in engineering due to their ease of operation and lack of the need for specialized equipment, especially in maintenance, renovation, and temporary projects. However, existing mechanical PE pipe fittings still have some shortcomings in practical use: 1. Unstable sealing performance: When traditional mechanical joints are used for a long time or subjected to external forces, the sealing elements are prone to loosening or deformation, leading to sealing failure and media leakage.

[0004] 2. Limited resistance to pull-out: When the pipeline system is subjected to axial tension or vibration, the existing joints are often unable to effectively resist the risk of PE pipe pull-out, affecting the long-term stability of the system.

[0005] 3. Insufficient anti-loosening performance: After installation, the threaded connection of the joint is prone to loosening due to temperature changes, medium pressure fluctuations or external vibrations, which in turn affects the reliability of the overall connection.

[0006] 4. Difficulty in balancing installation convenience and reliability: Some connectors have complex structures, complicated installation steps, and rely on the operator's experience, which can easily lead to connection failure due to improper installation. Utility Model Content

[0007] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a PE pipe joint that has a more stable connection, more reliable sealing, stronger pull-out resistance, and is easy to install.

[0008] The technical solution adopted by this utility model to achieve the above objectives is as follows: a stable PE pipe connector, comprising a connector body, an anti-loosening gland, a sealing module, and a locking ring. The connector body has interconnected socket cavities at both ends for PE pipe insertion. A limiting step is provided in the middle of the inner wall of each socket cavity to limit the insertion depth of the PE pipe. Threaded pipes are provided at both ends of the connector body, and a sealing ring is slidably connected to the threaded pipe. One side of the sealing ring abuts against the connector body. The anti-loosening gland is threaded onto the threaded pipe and abuts against the other side of the sealing ring. In use, the anti-loosening gland compresses the sealing ring. This causes deformation, generating a reaction force on the anti-loosening gland to prevent it from loosening. It also prevents dust and other contaminants from entering between the threaded pipe and the anti-loosening gland. The sealing module and locking ring are respectively installed inside the anti-loosening gland. The sealing module is sleeved and connected to the end of the threaded pipe, tightly fitting against the outer wall of the PE pipe, thus providing a certain degree of sealing between the PE pipe and the connector body. The locking ring is located on one side of the sealing module and abuts against it. During use, the radial compression of the anti-loosening gland tightly locks it against the outer wall of the PE pipe, preventing the PE pipe from being pulled out of the connector body under external force, thus achieving a fixed connection between the PE pipes.

[0009] In the above technical solution, the inside of the sealing collar is a hollow cavity, and several inclined support rods are fixedly connected inside the hollow cavity.

[0010] In the above technical solution, the sealing module includes a sealing sleeve and a sealing ring. The sealing sleeve is inserted into the port of the threaded tube. A sealing ring is fixedly connected to one end of the sealing sleeve. One side of the sealing ring abuts against the threaded tube, and the other side of the sealing ring abuts against the locking ring.

[0011] In the above technical solution, the locking ring is a conical sleeve, and the conical sleeve has several split grooves, which divide the conical sleeve into several petals.

[0012] In the above technical solution, one end of the anti-loosening cap is provided with a threaded sleeve opening, and a conical groove is provided inside the threaded sleeve opening. The threaded pipe is threadedly connected inside the threaded sleeve opening, and the conical sleeve is adapted to the conical groove of the anti-loosening cap.

[0013] In the above technical solution, a locking groove is provided on the inner side of the valve body of the conical sleeve, and a circular ring plate is fitted and connected in the locking groove. The inner side of the circular ring plate is provided with a number of evenly arranged unidirectional reverse teeth.

[0014] The beneficial effects of this utility model are: 1. The PE pipe fitting of the present invention, through the coordinated cooperation of the anti-loosening gland, the sealing collar, and the threaded pipe, can form a continuous and stable clamping force after installation. The hollow cavity inside the sealing collar and the inclined support rod generate a uniform elastic reaction force when compressed, effectively preventing the threaded connection from loosening due to vibration or thermal expansion and contraction, thereby significantly improving the stability and reliability of the fitting in long-term use.

[0015] 2. The conical sleeve-type locking ring used in this invention is compatible with the conical groove inside the anti-loosening gland. During tightening, it can generate radial contraction, thereby firmly gripping the outer wall of the PE pipe. Combined with the unidirectional reverse tooth design on the inner side of the valve body, it greatly enhances the joint's ability to resist axial pull-out of the pipe, ensuring the safety of the pipe connection under complex stress environments.

[0016] 3. The sealing module and locking ring of this invention adopt a separate assembly design. The axial compression of the locking ring ensures that the sealing sleeve fits tightly against the outer wall of the pipe and the inner wall of the joint. This double sealing structure effectively improves the sealing performance of the joint, reliably prevents media leakage, and adapts to certain pipe dimensional tolerances and deformations.

[0017] 4. The components of this invention have clear structures and well-defined functions, and the installation process is simple and smooth. During installation, simply insert the components one by one and tighten the anti-loosening caps. The locking and sealing processes are completed automatically and synchronously, greatly reducing the reliance on the operator's technical skills and improving the efficiency of on-site construction and the consistency of connection quality.

[0018] 5. This invention achieves a unified core function of preventing loosening, resisting pull-out, and sealing through the combined structure of the anti-loosening gland, sealing collar, locking ring, and sealing module. The overall structure is compact and reasonable, improving comprehensive performance without excessively increasing the number of components, which helps control manufacturing costs and ensures the structural strength and service life of the joint. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the disassembled structure of this utility model; Figure 3 This is a schematic diagram of the cross-sectional connection structure of the connector body of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the anti-loosening cap of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the sealing ring of this utility model; Figure 6 This is a schematic diagram of the sealing module structure of this utility model; Figure 7 This is a schematic diagram of the cross-sectional connection structure of the locking ring of this utility model.

[0020] In the diagram: 1. Connector body, 2. Anti-loosening gland, 3. Sealing module, 4. Locking ring, 5. Socket cavity, 6. Limiting step, 7. Threaded pipe, 8. Sealing collar, 9. Hollow cavity, 10. Inclined support rod, 11. Sealing sleeve, 12. Sealing ring, 13. Split groove, 14. Lobe, 15. Threaded sleeve opening, 16. Conical groove, 17. Positioning groove, 18. Circular ring plate, 19. One-way reverse teeth. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] Please see Figure 1-7 A stable PE pipe fitting includes a fitting body 1, an anti-loosening gland 2, a sealing module 3, and a locking ring 4. The fitting body 1 has interconnected socket cavities 5 at both ends for PE pipe socket connections. A limiting step 6 is provided in the middle of the inner wall of each socket cavity 5 to limit the insertion depth of the PE pipe. Threaded pipes 7 are provided at both ends of the fitting body 1. A sealing ring 8 is slidably connected to the threaded pipe 7. One side of the sealing ring 8 abuts against the fitting body 1. The anti-loosening gland 2 is threaded onto the threaded pipe 7 and abuts against the other side of the sealing ring 8. During use, the anti-loosening gland 2 squeezes the sealing ring 8, causing it to deform, thus preventing loosening. The cover 2 generates a reaction force to prevent the anti-loosening cover 2 from loosening, and at the same time prevents dust and other contaminants from entering between the threaded pipe 7 and the anti-loosening cover 2. The sealing module 3 and the locking ring 4 are respectively set inside the anti-loosening cover 2. The sealing module 3 is sleeved and connected to the end of the threaded pipe 7 and is tightly fitted to the outer wall of the PE pipe, thereby playing a certain sealing role in the connection between the PE pipe and the connector body 1. The locking ring 4 is located on one side of the sealing module 3 and is in contact with the sealing module 3. In use, the radial compression of the anti-loosening cover 2 makes it tightly locked to the outer wall of the PE pipe, thereby preventing the PE pipe from being pulled out of the connector body 1 under the action of external force, and realizing the connection and fixation between the PE pipes.

[0023] In the above technical solution, the interior of the sealing collar 8 is a hollow cavity 9, and several inclined support rods 10 are fixedly connected inside the hollow cavity 9. The hollow cavity 9 of the sealing collar 8 is filled with air, and several inclined support rods 10 are evenly connected inside. When it is subjected to a compressive force, the compressed air inside and the deformation of the inclined support rods 10 will generate a reverse force.

[0024] In the above technical solution, the sealing module 3 includes a sealing sleeve 11 and a sealing ring 12. The sealing sleeve 11 is inserted into the port of the threaded pipe 7. The sealing ring 12 is fixedly connected to one end of the sealing sleeve 11. One side of the sealing ring 12 abuts against the threaded pipe 7, and the other side of the sealing ring 12 abuts against the locking ring 4, which is used to ensure the sealing between the PE pipe and the connector body 1.

[0025] In the above technical solution, the locking ring 4 is a conical sleeve with several split grooves 13 on it, which divide the conical sleeve into several petals 14. The anti-loosening cap 2 has a threaded sleeve 15 at one end, and a conical groove 16 is provided inside the threaded sleeve 15. The threaded tube 7 is threaded into the threaded sleeve 15. The conical sleeve and the conical groove 16 of the anti-loosening cap 2 are adapted to each other. When the anti-loosening cap 2 is screwed onto the threaded tube 7, the conical groove 16 gradually contacts the outer wall of the conical sleeve and continuously squeezes the petals 14. The petals 14 will contract inward, thereby tightly holding the outer wall of the PE tube inserted into the socket cavity 5, forming a strong anti-pull-out force.

[0026] In the above technical solution, a locking groove 17 is provided on the inner side of the valve body 14 of the conical sleeve. A circular ring plate 18 is fitted and connected in the locking groove 17. A number of evenly arranged one-way reverse teeth 19 are provided on the inner side of the circular ring plate 18. When the valve body 14 is tightened inward, the circular ring plate 18 inside it also contracts inward, so that the one-way reverse teeth 19 on its inner side comes into contact with the surface of the PE pipe. The one-way reverse teeth 19 further increase the friction between the PE pipe and the outer wall, thereby improving the installation tightness of the PE pipe.

[0027] The working principle of this utility model is as follows: When in use, firstly, the anti-loosening cap 2 is slidably connected to the PE pipe, then the locking ring 4 and the sealing module 3 are sleeved and connected to the PE pipe, then the sealing ring 8 is sleeved and connected to the threaded pipes 7 at both ends of the connector body 1, then the PE pipe is inserted into the socket cavity 5. During this process, the sealing module 3 on the PE pipe is inserted into the threaded pipe 7, then the locking ring 4 is pushed to make it contact the sealing module 3, and finally the anti-loosening cap 2 sleeved on the PE pipe is screwed and connected to the threaded pipe 7 to complete the installation of the PE pipe connector.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stable PE pipe fitting, comprising a fitting body (1), an anti-loosening gland (2), a sealing module (3), and a locking ring (4), characterized in that: The connector body (1) has interconnected socket cavities (5) at both ends. A limiting step (6) is provided in the middle of the inner wall of the socket cavity (5). The connector body (1) has threaded tubes (7) at both ends. A sealing ring (8) is slidably connected to the threaded tube (7). One side of the sealing ring (8) abuts against the connector body (1). The anti-loosening cover (2) is threadedly connected to the threaded tube (7) and abuts against the other side of the sealing ring (8). The sealing module (3) and the locking ring (4) are respectively set inside the anti-loosening cover (2). The sealing module (3) is sleeved and connected to the port of the threaded tube (7). The locking ring (4) is located on one side of the sealing module (3) and abuts against the sealing module (3).

2. The PE pipe fitting with stable connection according to claim 1, characterized in that: The interior of the sealing ring (8) is a hollow cavity (9), and several inclined support rods (10) are fixedly connected inside the hollow cavity (9).

3. The PE pipe fitting with stable connection according to claim 1, characterized in that: The sealing module (3) includes a sealing sleeve (11) and a sealing ring (12). The sealing sleeve (11) is inserted into the port of the threaded tube (7). The sealing ring (12) is fixedly connected to one end of the sealing sleeve (11). One side of the sealing ring (12) abuts against the threaded tube (7), and the other side of the sealing ring (12) abuts against the locking ring (4).

4. The PE pipe fitting with stable connection according to claim 1, characterized in that: The locking ring (4) is a conical sleeve with several split grooves (13) on it, which divide the conical sleeve into several petals (14).

5. A stable PE pipe fitting according to claim 4, characterized in that: The anti-loosening cap (2) has a threaded sleeve (15) at one end, and a conical groove (16) is provided inside the threaded sleeve (15). The threaded tube (7) is threaded into the threaded sleeve (15), and the conical sleeve is adapted to the conical groove (16) of the anti-loosening cap (2).

6. A stable PE pipe fitting according to claim 5, characterized in that: The inner side of the valve body (14) of the conical sleeve is provided with a locking groove (17), and a circular ring plate (18) is fitted and connected in the locking groove (17). The inner side of the circular ring plate (18) is provided with a number of evenly arranged unidirectional reverse teeth (19).

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