Plastic pipeline joint

Abstract

The utility model provides a plastic pipeline connector. The plastic pipeline connector comprises a connector body and a locking sleeve. The connector body is provided with a butt joint part and a first connecting part in the axial direction, the butt joint part is of a tubular structure, the outer diameter of the butt joint part is gradually decreased in the direction away from the first connecting part, and the outer wall of the butt joint part is sleeved with the plastic pipeline. A locking part and a second connecting part are arranged on the locking sleeve side by side in the axial direction, the locking part is of a tubular structure, the inner diameter of the locking part is gradually reduced in the direction away from the second connecting part, the locking part is arranged on the plastic pipeline in a sleeving mode and can move along the central axis of the plastic pipeline, and when the locking part moves towards the butt joint part, the plastic pipeline can be clamped; the second connecting part is connected with the first connecting part, the clamping state of the plastic pipeline is kept, sealing butt joint of the pipeline is achieved, and reliability and convenience are achieved.

Description

Technical Field

[0001] This application relates to the field of pipe connection technology, specifically to a plastic pipe joint. Background Technology

[0002] UPVC pipes have good corrosion resistance, a smooth inner wall, and a low resistance coefficient, making it difficult for the medium inside the pipe to crystallize and cause blockages. They are also relatively inexpensive, leading to their widespread use. While adhesive bonding is commonly used for connections, the pipes are susceptible to deformation due to temperature variations in the medium, and leaks often occur at the joints due to factors such as the construction environment, personnel, and methods used during installation. Utility Model Content

[0003] To address the aforementioned technical problems, this application provides a plastic pipe fitting, including a fitting body and a locking sleeve. The fitting body has a mating portion and a first connecting portion arranged axially. The mating portion is a tubular structure, and its outer diameter gradually decreases in the direction away from the first connecting portion. A plastic pipe is fitted onto the outer wall of the mating portion. The locking sleeve has a locking portion and a second connecting portion arranged side-by-side axially. The locking portion is a tubular structure, and its inner diameter gradually decreases in the direction away from the second connecting portion. The locking portion is fitted onto the plastic pipe and can move along the central axis of the plastic pipe. When the locking portion moves towards the mating portion, it clamps the plastic pipe and connects the second connecting portion to the first connecting portion, maintaining the clamped state of the plastic pipe and achieving a sealed connection of the plastic pipe. This method is not only reliable but also very convenient.

[0004] In some embodiments, the outer wall of the first connecting part is provided with an external thread, and the inner wall of the second connecting part is provided with an internal thread that matches the external thread. During the screwing process of the first connecting part and the second connecting part, the locking part and the mating part continuously approach and clamp the plastic pipe, and the mechanical properties of the thread reduce the external force required to clamp the plastic pipe, making it easier to connect the plastic pipe.

[0005] In some embodiments, a sealing element is further provided on the external thread or the internal thread, the sealing element being used to seal the gap between the external thread and the internal thread. Since gaps can exist between the threads, leading to incomplete sealing, adding a sealing element can improve the sealing performance.

[0006] In some embodiments, the connector body further includes a pipe extension connected to one end of the first connecting portion. The outer wall of the pipe extension is provided with a first gripping portion, which can rotate the connector body. The outer wall of the second connecting portion is provided with a second gripping portion, which can rotate the locking sleeve. The first and second gripping portions are used by workers to hold the connector during installation, improving installation convenience.

[0007] In some embodiments, the cross-sections of the first gripping portion and the second gripping portion are both hollow hexagons, which can be used with a wrench during installation to provide greater torque and facilitate installation.

[0008] In some embodiments, the cross-section of the gripping part is annular, and both the first gripping part and the second gripping part have annular cross-sections. The outer wall of the first gripping part is provided with a plurality of first anti-slip grooves along its circumference, and the outer wall of the second gripping part is provided with a plurality of second anti-slip grooves along its circumference. When installing small-diameter pipes, workers can complete the installation simply by holding the gripping part.

[0009] In some embodiments, a first flange is fitted onto the outer wall of the first connecting part, and a second flange is fitted onto the outer wall of the second connecting part. The first flange and the second flange are fixedly connected by bolts. Flange connection is a commonly used technique in pipe connection. In the docking process of some large-size pipes, flanges can provide greater restraint force and ensure the sealing performance of the pipe joint.

[0010] In some embodiments, the plastic pipe joint further includes a sealing ring, which is fitted onto the first connecting portion and disposed between the first flange and the second flange. Sealing rings are commonly used sealing elements in pipe connections to improve sealing performance.

[0011] In some embodiments, the inner wall of the locking part is provided with a plurality of locking protrusions along the axial direction, and some or all of the locking protrusions abut against the outer wall of the plastic pipe. The locking protrusions can increase the friction between the locking part and the plastic pipe. When the locking part moves closer to the mating part, it can drive the plastic pipe to move further towards the mating part, increasing the length of the plastic pipe sleeved on the mating part and improving the sealing effect.

[0012] Furthermore, the outer wall of the docking part is provided with a plurality of docking protrusions along the axial direction, and some or all of the docking protrusions abut against the inner wall of the plastic pipe.

[0013] The beneficial effects of this application are as follows: This application provides a plastic pipe fitting, including a fitting body and a locking sleeve. The fitting body has a mating portion and a first connecting portion arranged axially. The mating portion is a tubular structure, and its outer diameter gradually decreases in the direction away from the first connecting portion. A plastic pipe is fitted onto the outer wall of the mating portion. The locking sleeve has a locking portion and a second connecting portion arranged side by side axially. The locking portion is a tubular structure, and its inner diameter gradually decreases in the direction away from the second connecting portion. The locking portion is fitted onto the plastic pipe and can move along the central axis of the plastic pipe. When the locking portion moves toward the mating portion, it can clamp the plastic pipe, connecting the second connecting portion with the first connecting portion, maintaining the clamped state of the plastic pipe, and achieving a sealed connection of the pipe. This is not only reliable but also very convenient. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0015] Figure 1 This is a cross-sectional view of the first embodiment of this application;

[0016] Figure 2 This is an exploded perspective view of the first embodiment of this application;

[0017] Figure 3 This is an exploded perspective view of the second embodiment of this application;

[0018] Figure 4 This is a cross-sectional view of the third embodiment of this application;

[0019] Figure 5 This is a partial enlarged schematic diagram of the third embodiment of this application. Detailed Implementation

[0020] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other alternative implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Figure 1 and Figure 2The first embodiment of this application illustrates a plastic pipe connector, including a connector body 1 and a locking sleeve 2. The connector body 1 has a mating portion 11 and a first connecting portion 12 arranged axially. The mating portion 11 is a tubular structure, and its outer diameter gradually decreases in the direction away from the first connecting portion 12. A plastic pipe 100 is fitted onto the outer wall of the mating portion 11. The locking sleeve 2 has a locking portion 21 and a second connecting portion 22 arranged side-by-side axially. The locking portion 21 is a tubular structure, and its inner diameter gradually decreases in the direction away from the second connecting portion 22. The locking portion 21 is fitted onto the plastic pipe 100 and can move along the central axis of the plastic pipe 100. When the locking portion 21 moves toward the mating portion 11, it can clamp the plastic pipe 100 and connect the second connecting portion 22 to the first connecting portion 12, maintaining the clamped state of the plastic pipe 100 and achieving a sealed connection of the plastic pipe 100, which is not only reliable but also very convenient.

[0022] There are several ways to connect the second connecting part 22 and the first connecting part 12, including threaded connection and flange connection. The first embodiment of this application uses a threaded connection, such as... Figure 2 As shown, the outer wall of the first connecting part 12 is provided with an external thread 121, and the inner wall of the second connecting part 22 is provided with an internal thread 221 that matches the external thread. During the screwing process of the first connecting part 12 and the second connecting part 22, the locking part 21 and the mating part 11 continuously approach and clamp the plastic pipe 100, and the mechanical properties of the thread will reduce the external force required to clamp the plastic pipe 100, making it easier to connect the plastic pipe 100.

[0023] Furthermore, a sealing element can be provided on the external thread 121 or the internal thread 221, the sealing element being used to seal the gap between the external thread 121 and the internal thread 221. Since gaps may exist between the threads, leading to incomplete sealing, adding a sealing element can improve the sealing performance. The sealing element can be either sealant or sealing tape.

[0024] In the first embodiment, as Figure 2 As shown, the connector body 1 also includes a pipe extension 13, which is connected to one end of the first connecting part 12. A first gripping part 131 is provided on the outer wall of the pipe extension 13, which can drive the connector body 1 to rotate. A second gripping part 23 is provided on the outer wall of the second connecting part 22, which can drive the locking sleeve 2 to rotate. The first gripping part 131 and the second gripping part 23 are used by workers to hold the connector during installation, improving the ease of installation.

[0025] In the first embodiment, as Figure 2As shown, the cross-section of the first gripping part 131 and the cross-section of the second gripping part 23 are both hollow hexagons, which can be used with a wrench during installation to provide greater torque and facilitate installation.

[0026] In the second embodiment, as Figure 3 As shown, the first gripping part 131 and the second gripping part 23 have annular cross-sections. The outer wall of the first gripping part 131 is provided with a plurality of first anti-slip grooves 132 along the circumference, and the outer wall of the second gripping part 23 is provided with a plurality of second anti-slip grooves 231 along the circumference. When installing small-diameter pipes, workers can complete the installation by holding the gripping parts by hand.

[0027] In the third embodiment of this application, the first connecting part 12 and the second connecting part 22 are connected by a flange, such as Figure 4 As shown, a first flange 122 is fitted onto the outer wall of the first connecting part 12, and a second flange 222 is fitted onto the outer wall of the second connecting part 22. The first flange 122 and the second flange 222 are fixedly connected by bolts. Flange connection is a commonly used technology in pipeline connection. In the process of connecting some large-size pipelines, flanges can provide greater restraint force and ensure the sealing performance of the pipeline joint.

[0028] Furthermore, in the third embodiment, as Figure 4 As shown, this application also includes a sealing ring 3, which is sleeved on the first connecting part 12 and disposed between the first flange 122 and the second flange 222. The sealing ring 3 is a commonly used sealing element in pipe connections to improve the sealing effect.

[0029] The material of the sealing ring 3 can be selected according to the actual use environment, such as fluororubber, neoprene rubber, or metal. The installation method of the sealing ring 3 can be as follows: Figure 4 The sealing groove shown is located on the first connecting part 12, or it can be clamped between the first flange 122 and the second flange 222.

[0030] In the third embodiment, as Figure 4 and Figure 5 As shown, the inner wall of the locking part 21 is provided with a plurality of locking protrusions 211 along the axial direction, and some or all of the locking protrusions 211 abut against the outer wall of the plastic pipe 100. The locking protrusions 211 can increase the friction between the locking part 21 and the plastic pipe 100. When the locking part 21 moves closer to the mating part 11, it can drive the plastic pipe 100 to move further towards the mating part 11, increasing the length of the plastic pipe 100 sleeved on the mating part 11 and improving the sealing effect.

[0031] Furthermore, such as Figure 5As shown, the outer wall of the docking part 11 is provided with a plurality of docking protrusions 111 along the axial direction. Some or all of the docking protrusions 111 abut against the inner wall of the plastic pipe 100. The docking protrusions 111 can increase the friction between the docking part 11 and the inner wall of the plastic pipe 100, making the docking more secure.

[0032] Finally, it should be noted that if any directional indication (such as up, down, left, right, front, back, etc.) is involved in the embodiments of this application, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0033] 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, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of 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. If 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.

[0034] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes 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 scope of patent protection of this application.

Claims

1. A plastic pipe joint, characterized in that, Includes the connector body and the locking sleeve; The connector body is provided with a docking part and a first connecting part along the axial direction. The docking part is a tubular structure. The outer diameter of the docking part gradually decreases in the direction away from the first connecting part. A plastic pipe is sleeved on the outer wall of the docking part. The locking sleeve has a locking part and a second connecting part arranged side by side along the axial direction. The locking part is a tubular structure. The inner diameter of the locking part gradually decreases in the direction away from the second connecting part. The locking part is sleeved on the plastic pipe and can move along the central axis of the plastic pipe. When the second connecting part is connected to the first connecting part, the locking part can cooperate with the mating part to clamp the plastic pipe.

2. The plastic pipe joint according to claim 1, characterized in that, The outer wall of the first connecting part is provided with an external thread, and the inner wall of the second connecting part is provided with an internal thread that matches the external thread.

3. The plastic pipe joint according to claim 2, characterized in that, A sealing element is also provided on the external thread or the internal thread, the sealing element being used to seal the gap between the external thread and the internal thread.

4. The plastic pipe joint according to claim 3, characterized in that, The connector body also includes a pipe extension, which is connected to one end of the first connecting part. The outer wall of the pipe extension is provided with a first gripping part, which can drive the connector body to rotate. The outer wall of the second connecting part is provided with a second gripping part, which can drive the locking sleeve to rotate.

5. The plastic pipe joint according to claim 4, characterized in that, Both the cross-section of the first grip portion and the cross-section of the second grip portion are hollow hexagons.

6. The plastic pipe joint according to claim 4, characterized in that, The first grip portion and the second grip portion have annular cross-sections. The outer wall of the first grip portion is provided with a plurality of first anti-slip grooves along the circumference, and the outer wall of the second grip portion is provided with a plurality of second anti-slip grooves along the circumference.

7. The plastic pipe joint according to claim 1, characterized in that, The outer wall of the first connecting part is fitted with a first flange, and the outer wall of the second connecting part is fitted with a second flange. The first flange and the second flange are fixedly connected by bolts.

8. The plastic pipe joint according to claim 7, characterized in that, The plastic pipe joint also includes a sealing ring, which is fitted onto the first connecting part and disposed between the first flange and the second flange.

9. The plastic pipe fitting according to any one of claims 1-8, characterized in that, The inner wall of the locking part is provided with a plurality of locking protrusions along the axial direction, and some or all of the locking protrusions abut against the outer wall of the plastic pipe.

10. The plastic pipe joint according to claim 9, characterized in that, The outer wall of the docking part is provided with multiple docking protrusions along the axial direction, and some or all of the docking protrusions abut against the inner wall of the plastic pipe.

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