Bell and spigot connecting structure of corrugated pipe

Abstract

The invention provides a bellmouth and spigot connecting structure of a corrugated pipe, relates to the technical field of pipeline installation, and aims to solve the problem that in the prior art, the bellmouth and spigot connecting position of the corrugated pipe is poor in supporting strength, the bellmouth and spigot connecting structure of the corrugated pipe comprises a first corrugated pipe and a second corrugated pipe, and a spigot is formed in one end of the first corrugated pipe; one end of the first corrugated pipe is provided with an insertion port, one end of the second corrugated pipe is provided with a birdmouth matched with the insertion port, the first corrugated pipe and the second corrugated pipe are inserted into the birdmouth through the insertion port to be connected in a sealed and nested mode, and a first supporting framework is arranged in the pipe wall of the insertion port; the first supporting framework is arranged along the periphery of the inserting opening. According to the bellmouth and spigot joint connecting structure of the corrugated pipe, the stability and the sealing performance of the joint are improved, the stability of a pipeline system is improved, the service life of the pipeline system is prolonged, and the bellmouth and spigot joint connecting structure is suitable for buried and non-buried use scenes.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline installation, and in particular to a bellows socket connection structure. Background Art

[0002] Steel belt corrugated pipe, also known as steel belt reinforced polyethylene spiral corrugated pipe, is a kind of winding structure wall pipe with high-density polyethylene (PE) as the matrix (inner and outer layers) and steel belt coated with adhesive resin on the surface. It greatly improves the ring stiffness of the pipe without increasing the cost, and the strength is greatly improved compared with the winding pipe and carat pipe under the same weight. Steel belt corrugated pipe is widely used in municipal drainage, sewage and other fields due to its unique advantages of high stiffness and corrosion resistance.

[0003] When the existing steel belt corrugated pipe is connected through the socket and the spigot, the spigot is generally inserted into the socket, and then the gap between the two ports is filled with filling materials to complete the connection of the corrugated pipe. For example, a steel belt corrugated pipe connection structure disclosed in the patent application document with application number 201220372601.1. However, during the long-term use of the traditional steel belt corrugated pipe, since the socket and spigot are both made of plastic, the supporting strength is poor and cannot adapt to the foundation of the supporting pipeline sinking due to loose soil or groundwater overflow, causing the sinking of the pipeline to make the socket and spigot easily damaged and deformed due to plastic creep, causing the sealing ring to loosen or detach, thereby causing fluid leakage, seriously affecting the stability and service life of the pipeline system. Summary of the invention

[0004] The purpose of the present invention is to provide a bellows socket connection structure to solve the problem of poor supporting strength of the bellows socket connection of the bellows in the prior art. The bellows socket connection structure of the present invention improves the stability and sealing of the connection, improves the stability and service life of the pipeline system, and is suitable for various usage scenarios such as buried and non-buried.

[0005] The present invention provides a bellows socket connection structure, comprising a first bellows and a second bellows, wherein a plug interface is provided at one end of the first bellows, and a socket interface matched with the plug interface is provided at one end of the second bellows, the first bellows and the second bellows are plugged into the socket interface through the plug interface to be sealed and nested, a first supporting skeleton is provided in the pipe wall of the plug interface, and the first supporting skeleton is arranged around the plug interface.

[0006] As a preferred solution of the present invention, a second supporting frame is arranged in the receiving interface and along a circumference of the receiving interface.

[0007] As a preferred solution of the present invention, the first supporting frame and the second supporting frame are cylindrical metal frames or non-metal frames.

[0008] As a preferred solution of the present invention, the first supporting frame and the second supporting frame are cylindrical steel belt structures, and a plurality of meshes are arranged on the steel belt.

[0009] As a preferred solution of the present invention, the receiving port is connected to the main body of the bellows through a transition connecting section, the transition connecting section is a hollow conical structure, the receiving port is connected to the large-diameter end of the transition connecting section, the main body of the bellows is connected to the small-diameter end of the transition connecting section, and a transition support frame is provided along the side wall of the transition connecting section, the transition support frame is conical and its large-diameter section is connected to the second support skeleton.

[0010] As a preferred solution of the present invention, a first inclined surface is formed on the inner side of the transition connection section, and a second inclined surface matched with the first inclined surface is provided on the outer side of the end of the plug interface, and the first inclined surface and the second inclined surface are in contact when the plug interface is connected to the receiving interface.

[0011] As a preferred solution of the present invention, the first supporting frame extends to the inner side of the first inclined surface.

[0012] As a preferred solution of the present invention, a sealing groove is provided on the outer side of the plug interface along the circumference thereof, and a sealing ring is provided in the sealing groove.

[0013] As a preferred solution of the present invention, one end of the first corrugated pipe is provided with a plug interface and the other end is provided with a socket interface.

[0014] As a preferred embodiment of the present invention, the bellows body of the first bellows and the second bellows includes an inner wall and an outer wall, the outer wall is connected to the outer side of the inner wall, the inner wall is a circular tube structure, the outer wall is a corrugated structure, and the outer wall has a steel support structure.

[0015] Compared with the prior art, the present invention has the following positive effects:

[0016] The bellows socket connection structure provided by the present invention comprises a first bellows and a second bellows, wherein a plug interface is provided at one end of the first bellows, and a socket interface matched with the plug interface is provided at one end of the second bellows, wherein the first bellows and the second bellows are plugged into the socket interface through the plug interface to be sealed and nested, and a first support frame is provided in the wall of the plug interface, and the first support frame is provided along a circle of the plug interface. The bellows socket connection structure in the present invention improves the structural strength and creep resistance of the plug interface by providing a first support frame in the wall of the plug interface to ensure the stability and sealing of the connection, thereby improving the stability and service life of the pipeline system, and is suitable for various usage scenarios such as buried and non-buried. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the bellows socket connection structure of the present invention;

[0019] Figure 2 This is a first embodiment of the first bellows in the present invention;

[0020] Figure 3 This is a second embodiment of the first bellows in the present invention;

[0021] Figure 4 It is a cross-sectional view of the side wall of the bellows body in the present invention.

[0022] In the figure: 1. first bellows; 11. second inclined surface; 2. second bellows; 3. plug-in interface; 4. receiving interface; 5. first supporting frame; 6. second supporting frame; 7. transition supporting frame; 8. sealing groove; 9. transition connecting section; 91. first inclined surface; 101. inner wall; 102. outer wall; 103. steel supporting structure. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be noted that, unless otherwise specified, "plurality" means two or more than two; the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "front end", "back end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplification, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0025] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0026] Embodiment 1:

[0027] This embodiment provides a bellows socket connection structure, such as Figure 1-Figure 4 As shown, it includes a first bellows 1 and a second bellows 2, a plug interface 3 is provided at one end of the first bellows 1, and a socket 4 adapted to the plug interface 3 is provided at one end of the second bellows 2, and the first bellows 1 and the second bellows 2 are sealed and nested in the socket 4 through the plug interface 3 plugged into the socket 4. Both the plug interface 3 and the socket 4 are hollow structures inside, and the first bellows 1 and the second bellows 2 are sealed and connected through the plug interface 3 and the socket 4, so that the inside of the first bellows 1 is connected with the inside of the second bellows 2.

[0028] A first support frame 5 is arranged in the pipe wall of the plug-in port 3, and the first support frame 5 is arranged along a circumference of the plug-in port 3. The first support frame 5 supports the plug-in port 3, so that the plug-in port 3 has a higher support strength.

[0029] The bellows socket connection structure in this embodiment improves the structural strength and creep resistance of the plug interface 3 by setting a first supporting skeleton 5 inside the pipe wall of the plug interface 3, thereby ensuring the stability and sealing of the connection, improving the stability and service life of the pipeline system, and being suitable for various usage scenarios such as buried and non-buried.

[0030] As a preferred embodiment, a second support frame 6 is arranged along the periphery of the socket 4 in the socket 4. The second support frame 6 supports the socket 4, so that the socket 4 has good support strength, and further enhances the stability of the connection between the plug 3 and the socket 4.

[0031] The bellows socket connection structure of this embodiment can be applied to both buried and non-buried use scenarios. In the buried use scenario, due to the natural constraint of the soil on the pipe, the first support frame 5 can be set only on the plug port 3, such as Figure 3 As shown, in order to enhance its structural stability and anti-creep ability. In non-buried use scenarios, such as above-ground or overhead pipelines, due to the lack of natural soil coverage, it is necessary to strengthen the support frame design of both the plug interface 3 and the socket interface 4, such as Figure 2 as shown to provide adequate structural support and prevent plastic creep.

[0032] As a preferred embodiment, the first support frame 5 and the second support frame 6 are cylindrical metal frames or non-metal frames, and the support strength of the metal frames or non-metal frames is greater than the support strength of plastic. Preferably, the first support frame 5 and the second support frame 6 are steel frames, which have good support strength, not only improving the structural strength of the plug interface 3 and the receiving interface 4, but also effectively dispersing stress and preventing creep.

[0033] Specifically, the second support skeleton 6 can be extended in the receiving port 4 along the side wall thereof in the axial direction, and the length of the second support skeleton 6 in the axial direction is equal to the length of the receiving port 4 .

[0034] As a preferred embodiment, the first support frame 5 and the second support frame 6 are cylindrical steel belt structures, and a plurality of meshes are arranged on the steel belt. The first support frame 5 and the side wall of the plug-in port 3 form an integral structure, which not only makes the first support frame 5 and the side wall of the plug-in port 3 have a good fusion effect, but also makes the plug-in port 3 have a certain toughness. The main material at the plug-in port 3 and the socket port 4 can be polyethylene material, and the first support frame 5 and the second support frame 6 are respectively injection molded in the polyethylene material to form the plug-in port 3 and the socket port 4, respectively.

[0035] As a preferred embodiment, the socket 4 is connected to the main body of the bellows through the transition connection section 9, and the transition connection section 9 is a hollow conical structure. The socket 4 is connected to the large-diameter end of the transition connection section 9, and the main body of the bellows is connected to the small-diameter end of the transition connection section 9. The inclined setting of the transition connection section 9 can evenly disperse the stress, reduce the force, make the transition connection part not easily compressed and deformed, and make the socket 4 and the main body of the bellows more firmly connected.

[0036] A transition support frame 7 is arranged along a circumference of the transition connection section 9 in the side wall thereof. The transition support frame 7 enhances the supporting strength of the transition connection section 9 and makes the connection between the insertion port 3 and the receiving port 4 more secure.

[0037] The transition support frame 7 is conical and its large diameter section is connected to the second support frame 6. A plurality of meshes are arranged on the transition support frame 7. The transition support frame 7 and the second support frame 6 can be an integrated structure.

[0038] As a preferred embodiment, a first inclined surface 91 is formed on the inner side of the transition connection section 9, and a second inclined surface 11 adapted to the first inclined surface 91 is provided on the outer side of the end of the plug interface 3. When the plug interface 3 is connected to the socket interface 4, the first inclined surface 91 fits with the second inclined surface 11, thereby enhancing the connection strength and sealing performance of the plug interface 3 and the socket interface 4, so as to ensure the stability and sealing of the connection.

[0039] As a preferred implementation mode, Figure 1 As shown, the first support frame 5 extends to the inner side of the first inclined surface 91 to support the connection between the first inclined surface 91 and the second inclined surface 11 and enhance the sealing performance of the connection.

[0040] As a preferred implementation mode, Figure 1 and Figure 2 As shown, a sealing groove 8 is provided along the circumference of the plug interface 3, and a sealing ring is provided in the sealing groove 8. The sealing ring has a certain elasticity and can be a rubber sealing ring. There can be multiple sealing grooves 8, and the multiple sealing rings are distributed along the outer wall of the plug interface 3 in the axial direction.

[0041] When the plug-in port 3 is connected to the socket port 4 , the plug-in port 3 is squeezed by the outer wall of the plug-in port 3 and the inner wall of the socket port 4 in the sealing groove, so as to further improve the sealing performance between the plug-in port 3 and the socket port 4 .

[0042] As a preferred embodiment, a plug-in port 3 is disposed at one end of the first corrugated tube 1 and a socket port 4 is disposed at the other end.

[0043] The bellows can be provided with a socket 4 at one end and a plug-in interface 3 at the other end to facilitate the connection between multiple bellows. It should be noted that the bellows can be provided with a socket 4 at both ends or a plug-in interface 3 at both ends, and the installation method can be adjusted according to the pipeline connection requirements.

[0044] As a preferred implementation mode, Figure 4As shown, the bellows body of the first bellows 1 and the second bellows 2 includes an inner wall 101 and an outer wall 102, the outer wall 102 is connected to the outside of the inner wall, the inner wall is a round tube structure, and the outer wall is a corrugated structure, which has good expansion and contraction deformation ability. A plurality of polyethylene semicircular protrusions are arranged on the outer wall, the inner wall is a polyethylene tube body, and a steel belt is bonded to each corrugated protrusion of the outer wall by an adhesive resin, so that the outer wall forms a steel-plastic composite. Each steel belt is arranged along a circle of the corrugated protrusion of the outer wall to form a steel support structure 103 formed in the outer wall, so that the outer wall has good support strength. The inner wall, the receiving port 4, the plug port 3, and the transition connection part are integrally formed.

[0045] Among them, the main body of the corrugated pipe is a steel belt reinforced polyethylene spiral corrugated pipe, which is made of a high-density polyethylene and steel belt composite material and has excellent corrosion resistance and high strength.

[0046] The sockets and spigots of existing polyethylene spiral corrugated pipes are all made of plastic, which has poor supporting strength and is prone to deformation.

[0047] When the corrugated pipe in this embodiment is used for underground use, the plug-in port 3 may be reinforced in consideration of the natural restraint of the soil on the pipe. Figure 3 As shown, the plug-in port 3 is equipped with a steel belt tube with a mesh as the first support frame. This structure not only enhances the rigidity of the plug-in port 3, but also disperses stress through the mesh and reduces the creep of the plastic. The steel belt is tightly combined with the polyethylene material without gaps, thereby improving the structural stability and creep resistance of the plug-in port 3. The socket 4 part can maintain the traditional plastic structure without adding a support frame. Since the outer wall of the pipe will be tightly coated by the soil after burial, a natural hard shell restriction layer will be formed, and the natural restraint force of the soil will effectively limit the creep of the socket 4. Then bury the corrugated pipe in the pre-excavated trench, ensuring that the bottom of the trench is flat and free of sharp objects to prevent damage to the pipe. The trench is then backfilled with soil and compacted layer by layer to ensure that the corrugated pipe is evenly and tightly coated.

[0048] When the corrugated pipe is used for non-buried use, such as above-ground or overhead pipes, due to the lack of natural soil coverage, both the plug 3 and the socket 4 need to be strengthened. The specific steps are as follows:

[0049] like Figure 2As shown, both the plug port 3 and the socket port 4 are equipped with a steel belt tube with a mesh as a supporting skeleton structure. This design provides sufficient structural support and effectively prevents leakage or damage caused by plastic creep. The steel belt is tightly combined with the outer wall of the pipe to form a stable overall structure. During the installation process, special attention should be paid to the alignment of the plug port 3 and the socket port 4, and special installation tools or equipment should be used to assist the installation process to ensure the sealing and stability of the connection. For the exposed pipe parts, you can consider adding additional protective measures, such as installing sunshades, insulation layers, etc., to extend the service life of the pipe and reduce the impact of environmental factors on the pipe.

[0050] The bellows socket connection structure of this embodiment significantly improves the structural strength and sealing performance of the pipe by setting a supporting frame at the connection point, prolongs the service life, and is suitable for a variety of usage scenarios such as buried and non-buried.

[0051] The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make several modifications and improvements without departing from the creative concept of the present invention, which should be included in the protection scope of the present invention.

Claims

1. A bellows socket connection structure, characterized in that: The invention comprises a first bellows (1) and a second bellows (2), wherein a plug-in interface (3) is arranged at one end of the first bellows (1), and a socket interface (4) matched with the plug-in interface (3) is arranged at one end of the second bellows (2), wherein the first bellows (1) and the second bellows (2) are plugged into the socket interface (4) via the plug-in interface (3) to form a sealed nested connection, and a first supporting frame (5) is arranged in the wall of the plug-in interface (3), and the first supporting frame (5) is arranged around the plug-in interface (3).

2. A bellows socket connection structure according to claim 1, characterized in that: A second supporting frame (6) is arranged in the receiving interface (4) and is arranged along a circumference of the receiving interface (4).

3. A bellows socket connection structure according to claim 2, characterized in that: The first supporting frame (5) and the second supporting frame (6) are cylindrical metal frames or non-metal frames.

4. A bellows socket connection structure according to claim 2, characterized in that: The first supporting frame (5) and the second supporting frame (6) are cylindrical steel belt structures, and a plurality of mesh holes are arranged on the steel belts.

5. The bellows socket connection structure according to claim 2, characterized in that: The receiving port (4) is connected to the main body of the bellows through a transition connecting section (9); the transition connecting section (9) is a hollow conical structure; the receiving port (4) is connected to the large-diameter end of the transition connecting section (9); the main body of the bellows is connected to the small-diameter end of the transition connecting section (9); a transition support frame (7) is provided along the side wall of the transition connecting section (9); the transition support frame (7) is conical and its large-diameter section is connected to the second support frame (6).

6. A bellows socket connection structure according to claim 5, characterized in that: A first inclined surface (91) is formed on the inner side of the transition connection section (9), and a second inclined surface (11) adapted to the first inclined surface (91) is provided on the outer side of the end of the plug interface (3); when the plug interface (3) is connected to the receiving interface (4), the first inclined surface (91) and the second inclined surface (11) are in contact with each other.

7. A bellows socket connection structure according to claim 6, characterized in that: The first supporting frame (5) extends to the inner side of the first inclined surface (91).

8. The bellows socket connection structure according to claim 1, characterized in that: A sealing groove (8) is arranged on the outer side of the plug interface (3) and along its circumference, and a sealing ring is arranged in the sealing groove (8).

9. The bellows socket connection structure according to claim 1, characterized in that: One end of the first corrugated pipe (1) is provided with an inserting interface (3) and the other end is provided with a receiving interface (4).

10. The bellows socket connection structure according to claim 1, characterized in that: The bellows bodies of the first bellows (1) and the second bellows (2) comprise an inner wall and an outer wall, wherein the outer wall is connected to the outer side of the inner wall, the inner wall is a circular tube structure, the outer wall is a corrugated structure, and the outer wall has a steel support structure.

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