Socket connection structure of integrally-formed reinforced pipe

Abstract

The utility model relates to the technical field of pipe fitting connection, in particular to a socket connection structure of an integrally-formed reinforced pipe, which comprises an inserting end and a bearing end of a pipe fitting, an anti-falling wave is arranged on the peripheral surface of the inserting end, and an anti-falling clamping groove for clamping the anti-falling wave and an elastic sealing ring for sealing are arranged in a pipe orifice of the bearing end. And compared with the elastic sealing ring, the anti-falling clamping groove is closer to the pipe orifice of the bearing end. The pipe fitting inserting structure solves the technical problem that in the inserting process of a pipe fitting inserting structure in the prior art, a clamping head for clamping and fixing a pipe fitting can slide into a sealing ring seriously, and therefore the sealing performance of the pipe fitting is affected.

Description

Socket connection structure of integrally molded reinforced tube Technical Field

[0001] This utility model relates to the field of pipe fitting connection technology, specifically to a socket connection structure for an integrally formed reinforced pipe. Background Technology

[0002] Reinforced pipes are pipes whose performance is improved by adding other media materials to the pipe wall of the base material (such as rubber, PVC, PE, etc.). The added media materials include spiral steel wire, glass fiber, etc., and the purpose is to enhance the mechanical properties of the pipe, such as pressure resistance, impact resistance, and corrosion resistance.

[0003] Connection methods between polymer pipes made of rubber, PVC, PE, etc., include heat fusion, adhesive bonding, and flexible sealing. While heat fusion and adhesive bonding are the most direct, adding other media materials to the pipe wall to improve performance exposes these materials (such as mesh fibers) during heat fusion, leading to a decline in pipe performance. Therefore, heat fusion-bonded reinforced pipes are most prone to damage and leakage at the joint. Adhesive bonding requires adhesives, whose performance directly affects the joint quality. In environments with high temperatures, direct sunlight, or groundwater, adhesives age rapidly and are prone to damage at the joint. Furthermore, leaks at the joint require cutting off a portion of the pipe, making maintenance cumbersome. Both adhesive bonding and heat fusion are also relatively complicated during pipe connection construction. Flexible sealing, however, avoids these drawbacks. Therefore, although its structure is more complex, flexible sealing is still widely used in pipe connections.

[0004] In existing technologies, resilient sealing connections typically involve inserting a sealing ring into the socket pipe, then inserting the plug end into both the socket pipe and the sealing ring, and finally applying pressure to the sealing ring to create a seal. This plug-in operation is simple and is the mainstream method in the industry. For stability, a snap-fit ​​structure is usually provided between the plug end and the socket pipe. During plugging, the pipe end will slide relative to the inner wall of the sealing ring, causing scratches and wear on the inner wall. In particular, the snap-fit ​​structure between the plug end and the socket pipe can severely scratch the inside of the sealing ring, thus affecting the pipe fitting's sealing performance. Summary of the Invention

[0005] The purpose of this utility model is to provide a socket connection structure for an integrally molded reinforced tube, in order to solve the technical problem mentioned above in the prior art where the clamping joint for fixing the tube will seriously slip inside the sealing ring during the insertion process, thereby affecting the sealing performance of the tube.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows: a socket connection structure of an integrally molded reinforced pipe, including a plug end and a receiving end of the pipe fitting. The outer circumferential surface of the plug end is provided with an anti-detachment wave. The pipe opening of the receiving end is provided with an anti-detachment groove for engaging with the anti-detachment wave and an elastic sealing ring for sealing. The anti-detachment groove is located closer to the pipe opening of the receiving end than the elastic sealing ring.

[0007] The beneficial effects of this implementation plan are as follows:

[0008] In existing plug-in structures, the sealing ring is positioned closer to the pipe opening compared to snap-fit ​​structures. Specifically, the snap-fit ​​protrusion at the plug end is typically located near the pipe opening, while the corresponding locking structure is positioned deeper into the receiving end of the pipe. This design ensures that the pipe opening at the plug end is more securely fixed by the locking structure within the receiving end during plug-in. Furthermore, the sealing ring's proximity to the receiving end's opening also helps seal any leakage at the snap-fit ​​point. However, in practical applications, it has been found that plug-in sealing relies on the elastic deformation of the sealing ring to seal gaps. Inevitably, the sealing ring is compressed during plug-in, resulting in significant resistance. During plug-in, when the plug end and the inner wall of the sealing ring slide relative to each other, the existing design, due to the sealing ring's proximity to the receiving end's opening, experiences a longer relative abrasion displacement between the plug end and the inner wall of the sealing ring, easily leading to wear on the inner wall of the sealing ring. Furthermore, because the sealing ring is closer to the pipe opening of the receiving pipe, the locking protrusion at the insertion end will scratch the sealing ring during the insertion process. This process will severely scratch the inside of the sealing ring, thus affecting the sealing performance of the pipe fitting. However, in this application, when setting the sealing elastic sealing ring and the limiting anti-detachment groove, their positions are adjusted so that the anti-detachment groove, which plays a locking role, is closer to the pipe opening of the receiving end, and the elastic ring is placed deep inside the receiving end tank. Therefore, during the insertion process, the relative abrasion displacement between the insertion end and the inner wall of the elastic sealing ring is shortened. And because the limiting anti-detachment groove structure is located at the pipe opening, the anti-detachment protrusion at the insertion end will not scratch the elastic sealing ring. Therefore, compared with the prior art, the elastic sealing ring of this application experiences less wear and will not be scratched during the insertion and installation process, resulting in better sealing performance after insertion.

[0009] Furthermore, an installation groove is formed on the inner wall of the receiving end, and a limiting ridge is provided on the outer periphery of the elastic sealing ring. The elastic sealing ring is fixed in the installation groove by the limiting ridge. This increases the contact area between the elastic sealing ring and the inner wall of the receiving end pipe, thus making it less likely to slide relative to the receiving end.

[0010] Furthermore, the inner wall of the central hole of the elastic sealing ring is an inclined insertion slope. The insertion slope causes the diameter of the central hole of the elastic sealing ring to gradually decrease from large to small. Therefore, when the insertion end is inserted, it is guided into the central hole of the elastic sealing ring, making the insertion smooth.

[0011] Furthermore, a transfer ring groove is formed on the side of the elastic sealing ring on the side with the smaller diameter of the central hole, facilitating the insertion of the connector end.

[0012] Furthermore, the elastic sealing ring is a composite structure in which an elastic material encapsulates a ring-shaped steel frame. The steel frame provides strength to the elastic sealing ring, enabling it to provide some support to the insertion port after insertion. Moreover, with the steel frame in place, the elastic sealing ring is supported when compressed, thus improving its sealing performance.

[0013] Furthermore, several anti-detachment grooves are provided along the pipe wall of the receiving end. These anti-detachment grooves form an adjustable insertion length telescopic wave. By utilizing the different anti-detachment grooves 1 on the telescopic wave 2 in conjunction with the anti-detachment wave 3, the insertion length of the pipe fitting can be adjusted to adapt to different working conditions. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the structure of this utility model.

[0015] Figure 2 is a schematic diagram of the connection structure between the anti-detachment wave and the anti-detachment slot of this utility model.

[0016] Figure 3 is a schematic diagram of the structure of the elastic sealing ring of this utility model.

[0017] Figure 4 is a cross-sectional view of the elastic sealing ring of this utility model. Detailed Implementation

[0018] The following detailed description illustrates the specific implementation method:

[0019] The reference numerals in the accompanying drawings of the instruction manual include: anti-detachment groove 1, telescopic wave 2, anti-detachment wave 3, anti-detachment step 31, elastic sealing ring 4, limiting ridge 41, transfer ring groove 42, steel frame 43, insertion inclined surface 44, adhesive interface 5, insertion end 6, receiving end 7.

[0020] The implementation is shown in Figures 1-4:

[0021] This application describes a socket connection structure for an integrally molded reinforced pipe, primarily used for connecting pipe fittings. This includes, but is not limited to, polymer-reinforced corrugated pipes. In this embodiment, an HDPE reinforced corrugated pipe is used. Its structure includes a plug end 6 and a socket end 7. The plug end 6 has an anti-detachment corrugation 3 protruding from its outer circumference. Correspondingly, the socket end 7 has a recessed anti-detachment groove 1 inside its opening, which engages with the anti-detachment corrugation 3. To facilitate extrusion processing, the anti-detachment corrugation 3 has an anti-detachment step 31. Because the HDPE reinforced corrugated pipe has a thin wall, when the anti-detachment groove 1 is recessed on the inner wall of the socket end 7, it will correspondingly protrude from the outer circumference of the socket end 7. Several anti-detachment grooves 1 are provided on the inner wall of the receiving end 7, which can be used to adjust the insertion length when clamping. Therefore, continuous protrusions appear on the outer circumference of the receiving end 7 to form a telescopic wave 2. By using the different anti-detachment grooves 1 on the telescopic wave 2 in conjunction with the anti-detachment wave 3, the insertion length of the pipe fitting can be adjusted to adapt to different working conditions.

[0022] Anti-detachment grooves 1 are sequentially installed from the inlet of the receiving end 7 inwards. Only after all anti-detachment grooves 1 are installed is an elastic sealing ring 4 installed deep within the receiving end 7. In other words, the anti-detachment grooves 1 are positioned closer to the inlet of the receiving end 7 than the elastic sealing ring 4. Therefore, when the insertion end 6 is inserted into the receiving end 7, the raised anti-detachment wave 3 will not scratch the inner wall of the elastic sealing ring 4. A recessed mounting groove is provided on the inner wall of the receiving end 7 at the corresponding position where the elastic sealing ring 4 is installed. The elastic sealing ring 4 is inserted into the mounting groove to secure itself to the receiving end.

[0023] As shown in Figures 3 and 4, the elastic sealing ring 4 is a composite annular structure with a steel skeleton 43 embedded within an elastic material. The steel skeleton 43 is an open annular structure, and its elastic material includes, but is not limited to, rubber. The elastic sealing ring 4 is not a complete annular structure; its outermost ring has a triangular-section limiting ridge 41. During installation, the limiting ridge 41 fits into the mounting groove when connected to the receiving end 7, increasing the contact area and limiting depth, preventing the elastic sealing ring 4 from sliding relative to the receiving end 7. The inner wall of the elastic sealing ring 4 is not a flat circumferential surface, but a slightly inclined insertion slope 44. The inclination angle of the insertion slope 44 includes, but is not limited to, 3°. This causes the diameter of the hole in the middle of the elastic sealing ring 4 to gradually decrease. During installation, the side with the larger diameter faces the opening of the receiving end 7. Therefore, when the insertion end 6 is inserted, because the opening facing the receiving end 7 has a larger diameter, the insertion end 6 can easily insert into the hole in the middle of the elastic sealing ring 4. A transfer ring groove 42 is formed on the side of the elastic sealing ring 4 with the smaller aperture. When the insertion end 6 is inserted into the elastic sealing ring 4, the insertion end 6 compresses the elastic sealing ring 4 as the aperture gradually decreases. The compression process completely seals the gap between the insertion end 6 and the receiving end 7. However, as the aperture gradually shrinks, the deformation of the elastic sealing ring 4 under compression increases. The transfer ring groove 42 allows the smaller aperture side to deform into the transfer ring groove 42 when compressed, making the insertion smoother. Because the elastic sealing ring 4 has a steel skeleton inside, only the rubber at the edge of the elastic sealing ring 4 deforms into the transfer ring groove 42, and the sealing performance of the elastic sealing ring 4 is not affected.

[0024] The pipe opening at the receiving end 7 is inclined upward and has an arc-shaped adhesive interface 5 at the end. The inclination angle is not limited to 1.5°. Correspondingly, a groove is opened on the outer periphery of the insertion pipe 6. Therefore, after the insertion is completed, adhesive can be used to perform another bonding at the station interface 5 to seal the snap-fit ​​structure and sealing ring, and avoid or reduce the entry of corrosive liquids and microorganisms from the external environment into the insertion gap and cause damage.

[0025] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A socket connection structure for an integrally molded reinforced pipe, comprising a plug end and a socket end, wherein the outer circumferential surface of the plug end is provided with an anti-detachment wave, and the pipe opening of the socket end is provided with an anti-detachment groove for engaging with the anti-detachment wave and an elastic sealing ring for sealing, characterized in that: The anti-detachment groove is positioned closer to the pipe opening at the receiving end compared to the elastic sealing ring.

2. The socket connection structure of the integrally molded reinforced tube according to claim 1, characterized in that: The receiving end has an installation groove on its inner wall, and the elastic sealing ring has a limiting ridge on its outer periphery. The elastic sealing ring is fixed in the installation groove by the limiting ridge.

3. The socket connection structure of the integrally molded reinforced tube according to claim 2, characterized in that: The inner wall of the central hole of the elastic sealing ring is an inclined insertion slope.

4. The socket connection structure of the integrally molded reinforced tube according to claim 3, characterized in that: A transfer ring groove is provided on the side of the elastic sealing ring on the side with the smaller diameter of the central hole.

5. The socket connection structure of the integrally molded reinforced tube according to claim 1, characterized in that: The elastic sealing ring is a composite structure in which an elastic material encapsulates a ring-shaped steel skeleton.

6. The socket connection structure of the integrally molded reinforced tube according to claim 1, characterized in that: The anti-detachment grooves are provided along the pipe wall of the receiving end, and the anti-detachment grooves form an extension wave with an adjustable insertion length.

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