Sealing anti-drop connecting structure of double-wall corrugated pipe

Abstract

The utility model relates to the technical field of corrugated pipes, and discloses a sealing anti-drop connecting structure of a double-wall corrugated pipe, which comprises a corrugated pipe body, a spigot section is arranged at one end of the corrugated pipe body, a socket section is arranged at the other end of the corrugated pipe body, and a sealing ring and an anti-drop buckle are arranged between the outer peripheral wall of the spigot section and the inner peripheral wall of the socket section of the corrugated pipe body. The peripheral wall of the socket section is of a small corrugated structure which extends in the axial direction and is provided with wave crests and wave troughs which are sequentially and alternately arranged, and the sealing ring and the anti-tripping buckle are clamped and mounted at the wave troughs of the socket section; the anti-falling buckle comprises an anti-falling base and an annular buckle body, the anti-falling base comprises an inner annular base body, an outer annular base body and a connecting ring connected between the inner annular base body and the outer annular base body, the outer wall of the outer annular base body is connected with the annular buckle body, and the annular buckle body extends in the direction opposite to the opening of the socket section and gradually inclines in the direction away from the axis in the extending process; and the socket section is provided with an annular clamping groove which is matched, propped and buckled with the annular buckle body. According to the utility model, the anti-drop buckle is utilized, so that the connection is more convenient, and the anti-drop effect is good.

Description

Technical Field

[0001] This utility model relates to the field of corrugated pipe technology, specifically to a sealing and anti-detachment connection structure for a double-walled corrugated pipe. Background Technology

[0002] Double-wall corrugated pipe is a new type of pipe with a ring-shaped outer wall and a smooth inner wall. It features strong resistance to external pressure, low engineering cost, and long service life, and is widely used in municipal engineering projects, including sewage and rainwater pipes, urban sewage treatment plant networks, urban utility tunnels, highways, high-speed railways, bridge drainage projects, rural rainwater and sewage separation projects, intercepting sewer projects, flood discharge projects, power station drainage networks, and culverts. In practical use, corrugated pipes need to be connected to meet actual length requirements. Currently, to ensure convenient and secure connections and prevent loosening or detachment of the corrugated pipe, anti-detachment clips are used. For example, Chinese utility model patent CN 219282691 U discloses an anti-detachment clip for corrugated pipes, including a buckle and a corrugated pipe buckle. Both ends of the buckle are fixedly connected to a connecting plate, one end of which has a connecting hole, and the other end is fixedly connected to a bolt. Multiple buckle bases are fixedly connected to one side of the bolt. For example, the Chinese invention patent CN 110578841 B describes a pipe assembly with an anti-detachment sealing structure, consisting of at least two pipes; one end of one pipe is connected to a tubular spigot section, and the other end is connected to a tubular socket section. The pipe assembly with the anti-detachment sealing structure also includes a sealing ring and an anti-detachment buckle. However, existing anti-detachment buckles still consist of two semi-rings interlocking, which is cumbersome to operate and has low installation efficiency. Utility Model Content

[0003] The purpose of this invention is to address the above-mentioned problems by providing a sealed and anti-detachment connection structure for double-walled corrugated pipes, which makes connection more convenient and has a good anti-detachment effect.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a sealing and anti-detachment connection structure for a double-walled corrugated pipe, comprising a corrugated pipe body, one end of which has a spigot section and the other end has a socket section. A sealing ring and an anti-detachment buckle are provided between the outer peripheral wall of the spigot section and the inner peripheral wall of the socket section. The outer peripheral wall of the spigot section is a small corrugated structure extending axially with alternating peaks and troughs. The sealing ring and the anti-detachment buckle are snapped onto the trough of the spigot section; the anti-detachment... The buckle includes an anti-detachment base and an annular buckle body. The anti-detachment base includes an inner annular seat body that can be inserted into the trough of the insertion section and an outer annular seat body that can abut against the outer wall of the crest of the insertion section. The middle part of the inner annular seat body is connected to the outer annular seat body as a whole through a connecting ring. The outer wall of the outer annular seat body is connected to the annular buckle body. The annular buckle body extends in the opposite direction to the opening of the insertion section and gradually tilts away from the axis line during the extension process. The insertion section is provided with an annular groove that cooperates with the annular buckle body to abut and engage.

[0005] Preferably, the socket section includes a flared connecting section, a sealing receiving section, and a snap-fit ​​section arranged sequentially from the inside to the outside. The flared connecting section is flared outward until its outer diameter is equal to the outer diameter of the outer corrugated wall of the corrugated pipe body. The sealing receiving section extends axially along this outer diameter. The part where the sealing receiving section connects with the snap-fit ​​section extends outward and is bent to form the annular snap-fit ​​groove.

[0006] Preferably, the snap-fit ​​section is a protruding structure.

[0007] Preferably, the inner wall of the inner circumferential seat matches the shape of the outer wall of the trough of the insertion section.

[0008] Preferably, the thickness of the inner circumferential seat is 1 / 5 to 1 / 4 of the trough height of the insertion section.

[0009] Preferably, the inner walls at both ends of the outer circumferential seat are provided with arc-shaped surfaces that match the outer wall of the insertion section.

[0010] By adopting the above technical solution, this utility model has the following beneficial effects:

[0011] The anti-detachment buckle of this utility model has an inner circumferential seat, an outer circumferential seat, and a circumferential buckle. The inner circumferential seat can be inserted into the trough of the insertion section, the outer circumferential seat can abut against the outer wall of the crest of the insertion section, and the circumferential buckle abuts against the circumferential groove of the socket section, thereby achieving anti-detachment. This structure is convenient to connect, has a firm and tight connection, and has a good anti-detachment effect. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a sealing and anti-detachment connection structure for a double-walled corrugated pipe according to the present invention.

[0013] Figure 2 This is a structural schematic diagram of the anti-detachment fastener of this utility model;

[0014] Figure 3 This is a cross-sectional view of the anti-detachment fastener of this utility model;

[0015] In the diagram: 1-Corrugated pipe body, 2-Anti-disengagement, 11-Spigot section, 12-Socket section, 121-Flanged connection section, 122-Sealed socket section, 123-Snap-fit ​​section, 124-Annular groove, 21-Inner circumferential seat, 22-Outer circumferential seat, 221-Arc-shaped surface, 23-Annular buckle body, 24-Connecting ring, 3-Sealing ring. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, 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. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present invention. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of the present invention are used to distinguish different objects and not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0017] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0018] like Figures 1-3As shown, a sealing and anti-disengagement connection structure for a double-walled corrugated pipe includes a corrugated pipe body 1. One end of the corrugated pipe body 1 has a spigot section 11, and the other end has a socket section 12. A sealing ring 3 and an anti-disengagement buckle 2 are provided between the outer peripheral wall of the spigot section 11 and the inner peripheral wall of the socket section 12. The outer peripheral wall of the spigot section 11 has a small corrugated structure extending axially with alternating peaks and troughs. The sealing ring 3 and the anti-disengagement buckle 2 are snapped into the troughs of the spigot section 11. The sealing ring 3 is a 300 national standard sealing ring.

[0019] The anti-disengagement buckle 2 includes an anti-disengagement base and a circumferential buckle body 23. The anti-disengagement base includes an inner circumferential seat body 21 that can be inserted into the trough of the insertion section 11 and an outer circumferential seat body 22 that can abut against the outer wall of the crest of the insertion section 11. The middle part of the inner circumferential seat body 21 is connected to the outer circumferential seat body 22 as a whole through a connecting ring 24. The connecting ring 24 on the outer wall of the outer circumferential seat body 22 extends toward the buckle body 23, and the circumferential buckle body 23 extends in the opposite direction to the opening of the insertion section 11. During the extension process, it gradually tilts away from the axis. The insertion section 11 is provided with an annular groove 124 that engages with the circumferential buckle body 23. The anti-disengagement buckle 2 is a flexible EPDM sealing buckle.

[0020] The socket section 12 includes a flared connecting section 121, a sealing receiving section 122, and a snap-fit ​​section 123 arranged sequentially from the inside to the outside. The corrugated pipe is a buried high-density polyethylene (HDPE) double-wall corrugated pipe, including an inner pipe wall and an outer corrugated wall. During molding, the socket section 12 and the spigot section 11 are integrally formed with the corrugated pipe material. The flared connecting section 121 is formed by expanding the two pipe walls outward until the outer diameter is equal to the outer diameter of the outer corrugated wall of the corrugated pipe body 1. The sealing receiving section 122 extends axially along this outer diameter. At the junction of the sealing receiving section 122 and the snap-fit ​​section 123, it extends outward and bends to form an annular snap-fit ​​groove 124.

[0021] The snap-fit ​​section 123 has a raised structure. Compared with a recessed design, the raised structure of the snap-fit ​​section 123 has stronger compressive strength, is not easily deformed or damaged, and is easier to process, resulting in better locking strength.

[0022] The inner wall of the inner ring seat 21 matches the shape of the outer wall of the trough of the socket section 11. The thickness of the inner ring seat 21 is 1 / 5 to 1 / 4 of the height of the trough of the socket section 11. This facilitates a tight fit between the inner ring seat 21 and the trough of the socket section 11.

[0023] The inner walls at both ends of the outer ring seat 22 are provided with arc-shaped surfaces 221 that match the outer wall of the crest of the socket section 11. This allows the outer ring seat 22 to fit tightly against the crest of the socket section 1111, improving the tightness of the connection.

[0024] During installation, the anti-disengagement buckle 2 is fixedly installed in the third trough of the spigot section 11, and the sealing ring 3 is installed in the first trough of the spigot section 11. After the anti-disengagement buckle 2 and the sealing ring 3 are arranged, the socket section 12 of another corrugated pipe is connected to it. Due to the elasticity of the circumferential buckle body 23, it can contract when pressed until it reaches the annular groove 124, and then its own elasticity recovers and presses against the annular groove 124, achieving the anti-disengagement effect. This structure is convenient to connect, has a firm and tight connection, and has a good anti-disengagement effect.

[0025] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A sealed disconnecting structure of a double-walled bellows, characterized by: The device includes a corrugated pipe body, one end of which has a spigot section and the other end has a socket section. A sealing ring and an anti-disengagement buckle are provided between the outer peripheral wall of the spigot section and the inner peripheral wall of the socket section. The outer peripheral wall of the spigot section has a small corrugated structure with alternating peaks and troughs extending along the axial direction. The sealing ring and the anti-disengagement buckle are snapped into the trough of the spigot section. The anti-disengagement buckle includes an anti-disengagement base and an annular buckle body. The anti-disengagement base includes an inner annular seat body that can be snapped into the trough of the spigot section and an outer annular seat body that can abut against the outer wall of the peak of the spigot section. The middle part of the inner annular seat body is connected to the outer annular seat body by a connecting ring. The outer wall of the outer annular seat body is connected to the annular buckle body. The annular buckle body extends in the opposite direction to the opening of the spigot section and gradually tilts away from the axis during the extension. The spigot section has an annular groove that abuts and engages with the annular buckle body.

2. A sealed disconnecting structure of a double-walled corrugated pipe according to claim 1, characterized by The socket section includes a flared connecting section, a sealing receiving section, and a snap-fit ​​section arranged sequentially from the inside to the outside. The flared connecting section is flared outward until its outer diameter is equal to the outer diameter of the outer corrugated wall of the corrugated pipe body. The sealing receiving section extends axially along this outer diameter. The part where the sealing receiving section connects with the snap-fit ​​section extends outward and is bent to form the annular snap-fit ​​groove.

3. A sealed disconnecting structure of a double-walled bellows according to claim 2, characterized by The snap-fit ​​section has a raised structure.

4. The sealed disconnect of a double wall corrugated pipe according to claim 1, wherein, The inner wall of the inner ring seat matches the shape of the outer wall of the trough of the insertion section.

5. A sealed disconnecting structure of a double-walled bellows according to claim 1 or 4, characterized in that, The thickness of the inner circumferential seat is 1 / 5 to 1 / 4 of the trough height of the insertion section.

6. The sealed disconnect of a double wall corrugated pipe according to claim 1, wherein, The inner walls at both ends of the outer ring seat are provided with arc-shaped surfaces that match the outer wall of the crest of the insertion section.

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