Pipeline with two-way socket and spigot joint

Abstract

The utility model relates to the technical field of pipeline equipment, and discloses a pipeline with a two-way socket and spigot joint, the pipeline comprises an inner pipe, an outer pipe and a sealing ring, the inner wall of the inner pipe is provided with an inner sleeve, the front edge of the inner sleeve is provided with an inner groove, and a pressing plate is fixedly embedded in the inner groove; the outer pipe comprises a birdmouth and a through pipe, a step groove is formed in the birdmouth, an arc-shaped protrusion is arranged on the inner side wall of the step groove, a clamping groove is formed in the step connecting position of the step groove, an elastic piece is inserted in the clamping groove, one side of the elastic piece is attached to the arc-shaped protrusion, a limiting groove is formed in the opposite face, close to the clamping groove, of the step groove, and a clamping block is arranged in the limiting groove. Firstly, through the multi-layer sealing arrangement of the upper sealing strip, the gasket and the lower sealing strip, a more reliable sealing effect is achieved, medium leakage is effectively prevented, secondly, uniform pressure distribution and stable support are provided through the interaction of the arc-shaped protrusions, the matched elastic piece and the gasket, and the sealing effect is improved. And the stability and the sealing performance of the joint during pipeline connection are enhanced.

Description

Technical Field

[0001] This application relates to the technical field of pipeline equipment, and in particular to a pipeline with a bidirectional socket joint. Background Technology

[0002] Pipes with bidirectional socket joints are widely used in liquid and gas transmission systems in construction, industry, and municipal sectors. This type of piping system typically consists of a socket and a spigot, using the socket connection to extend or branch the pipe. The socket is one end of the pipe, with a groove or opening to receive the spigot; the spigot is the other end, designed to be inserted into the socket. This connection method facilitates installation and disassembly and provides relatively reliable sealing performance.

[0003] Pipe seals with bidirectional socket joints typically rely on mechanical seals: sealing and bonding are achieved by using sealing rings or gaskets and tightening them with bolts or other mechanical means; and sealing is achieved by using specific adhesives or sealants to fill the gaps at the pipe joints.

[0004] Although existing technologies offer a variety of methods for pipe connection and sealing, some shortcomings still exist in practical applications. For example, during use, long-term flushing of the liquid inside the pipe can cause the liquid to seep into the inner wall of the metal pipe through the gaps between different materials, leading to corrosion failure, pipe wall corrosion, affecting the service life of the pipe, and contaminating the liquid transported in the pipe. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. The purpose of the present invention is to provide a pipe with a bidirectional socket joint to solve the problems mentioned in the background art.

[0006] In a first aspect, this application provides a pipe with a bidirectional socket joint, employing the following technical solution:

[0007] A pipe with a bidirectional socket joint includes an inner pipe, an outer pipe and a sealing ring. The inner wall of the inner pipe is provided with an inner sleeve, and the front edge of the inner sleeve is provided with an inner groove. A pressure plate is embedded and fixed in the inner groove.

[0008] The outer tube includes a receiving interface and a through pipe. A stepped groove is provided at the receiving interface. An arc-shaped protrusion is provided on the inner side wall of the stepped groove. A retaining groove is provided at the step connection of the stepped groove. A spring is inserted into the retaining groove. One side of the spring fits against the arc-shaped protrusion. A limiting groove is provided on the opposite side of the stepped groove near the retaining groove. A retaining block is provided in the limiting groove. A protrusion is provided at the end of the retaining block away from the limiting groove. The protrusion forms an abutment contact with the side of the spring. One end of the spring is fixed in the retaining groove, and the other end of the spring extends to the port of the outer tube.

[0009] The sealing ring is fitted on the outer edge of the outer tube's receiving interface. The inner ring of the sealing ring is provided with an upper sealing strip, a gasket, and a lower sealing strip from top to bottom. The gasket in the sealing ring fits against the upper edge of the outer tube and the inner side of the stepped groove, and when the gasket is squeezed, it extends onto the spring sheet.

[0010] By adopting the above technical solution: the inner sleeve is set on the inner wall of the inner tube to enhance the local strength of the inner tube or protect it from corrosion and wear; the outer tube consists of a socket and a through pipe. The socket is used to receive the insertion part of the inner tube, and the stepped groove at the socket is used to accommodate inner tubes of different diameters, while also providing positioning for the gasket on the sealing ring; the retaining groove is rectangular and used to insert the spring piece; the spring piece is designed to provide elastic force during pipe connection, ensuring tight contact between the sealing ring and the pipe; the limiting groove is used to set the retaining block to limit the movement range of the spring piece and ensure its stability during connection. The protrusion of the retaining block forms an abutment contact with the side of the spring piece to fix its position and prevent displacement during connection or use; the sealing ring is sleeved on the outer edge of the socket of the outer tube. Its structure is used to achieve sealing at the pipe connection. The sealing ring consists of an upper sealing strip, a gasket, and a lower sealing strip. This multi-layer structure is used to adapt to different sealing requirements and provide a more reliable sealing effect.

[0011] Optionally, the upper sealing strip is disposed on the upper end of the outer tube's receiving interface, the gasket is disposed on the receiving interface, and the bottom of the gasket is pressed onto the spring sheet, and the lower sealing strip is attached to the lower end of the outer tube's receiving interface.

[0012] By adopting the above technical solution, the upper sealing strip is set at the upper end of the outer pipe socket to provide a seal in the upper area of ​​the pipe connection; the gasket is set on the socket, and its bottom is pressed against the spring plate. This allows the gasket to be supported and fixed by the spring plate during pipe connection, while the pressing of the gasket helps to enhance the sealing effect; the lower sealing strip is fitted to the lower end of the outer pipe socket, corresponding to the upper sealing strip, to provide a seal in the lower area of ​​the pipe connection.

[0013] Optionally, a positioning hole is provided at the center of the arc-shaped protrusion, and a sphere is provided on the side of the spring piece near the arc-shaped protrusion. The sphere and the positioning hole are provided as a set.

[0014] By adopting the above technical solution, when the spherical part of the spring is inserted into the positioning hole of the arc-shaped protrusion, the spring is firmly attached to the arc-shaped protrusion.

[0015] Optionally, the card slot is rectangular, and the upper edge of the card slot is flush with the connection point of the stepped groove.

[0016] By adopting the above technical solution, the slot has two opposite long sides and two opposite short sides, and the upper edge of the slot is flush with the connection of the stepped groove, which helps to ensure the stability and sealing of the pipe connection.

[0017] Optionally, the arc-shaped protrusions are arranged at equal intervals along the length of the stepped groove.

[0018] By adopting the above technical solution, when the spring sheet fits against the arc-shaped protrusion, the arc-shaped protrusion provides a uniform pressure distribution.

[0019] Optionally, the bottom of the locking block is embedded and fixed in the limiting groove, the middle of the locking block is located at the upper edge of the limiting groove, and the protrusion at the top of the locking block extends to the arc-shaped protrusion.

[0020] By adopting the above technical solution, the bottom of the locking block is embedded and fixed in the limiting groove to ensure that the locking block will not shift or fall off during pipeline connection and use; the middle of the locking block is set at the upper edge of the limiting groove, which allows the locking block to form abutment contact with the spring while remaining fixed; the protrusion at the top of the locking block extends to the arc-shaped protrusion to further enhance the stability of the pipeline connection and prevent the spring from being over-compressed or shifted through physical blocking.

[0021] Optionally, the locking block is made of silicone.

[0022] By adopting the above technical solution, the high elasticity of silicone allows the locking block to return to its original shape under the action of the spring, providing a lasting elastic force. The silicone locking block, together with the spring and the arc-shaped protrusion, provides a better sealing effect and prevents media leakage.

[0023] Optionally, one end of the spring is bent and fixed in the slot, the middle end of the spring is attached to the arc-shaped protrusion, and the other end of the spring is bent and disposed on the upper end face of the outer tube.

[0024] By adopting the above technical solution, one end of the spring is firmly fixed in the slot, providing a stable anchor point, and the bending and fixing method helps to improve the installation stability of the spring and prevent it from shifting during pipeline connection or operation; the middle end of the spring fits against the arc-shaped protrusion to provide uniform pressure distribution during pipeline connection; the other end of the spring is bent and set on the upper end face of the outer tube to provide additional support and fixation.

[0025] Optionally, the pressure plate is T-shaped, with its bottom embedded and fixed in an inner groove, and its upper end abutting against the upper edge of the outer tube of the inner tube.

[0026] By adopting the above technical solution, the T-shaped design of the pressure plate gives it a horizontal main body and a vertical extension. The vertical part of the pressure plate is embedded and fixed in the inner groove, which provides a stable installation base for the pressure plate. The horizontal part of the pressure plate presses down onto the gasket of the sealing ring and the spring sheet, which plays a role in limiting and pressing.

[0027] In summary, this application includes at least one of the following beneficial technical effects: First, the multi-layer sealing arrangement of the upper sealing strip, gasket, and lower sealing strip achieves a more reliable sealing effect, effectively preventing media leakage. Second, the interaction between the arc-shaped protrusion and the cooperating spring and gasket provides uniform pressure distribution and stable support, enhancing the stability and sealing of the connection during pipeline connection. At the same time, the pressure plate provides a simpler and more reliable connection method compared to traditional mechanical fastening or welding. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the cross-sectional structure of the inner tube in this utility model.

[0029] Figure 2 This utility model Figure 1 A partially enlarged structural diagram.

[0030] Figure 3 This is a cross-sectional structural diagram of the sealing ring in this utility model.

[0031] Figure 4 This is a cross-sectional structural diagram of the positioning hole in this utility model.

[0032] Reference numerals: 1. Inner tube; 11. Inner sleeve; 110. Inner groove; 2. Outer tube; 21. Socket; 210. Stepped groove; 22. Through pipe; 3. Sealing ring; 31. Upper sealing strip; 32. Washer; 33. Lower sealing strip; 4. Pressure plate; 5. Arc-shaped protrusion; 51. Positioning hole; 6. Slot; 7. Spring piece; 71. Ball; 8. Limiting groove; 9. Positioning block; 91. Protrusion. Detailed Implementation

[0033] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0034] like Figures 1 to 4 In one embodiment of the pipe with bidirectional socket joint of the present invention, the pipe with bidirectional socket joint of this embodiment includes an inner pipe 1, an outer pipe 2 and a sealing ring 3. The inner wall of the inner pipe 1 is provided with an inner sleeve 11, and the front edge of the inner sleeve 11 is provided with an inner groove 110. A pressure plate 4 is embedded and fixed on the inner groove 110.

[0035] The outer tube 2 includes a receiving interface 21 and a through tube 22. A stepped groove 210 is provided at the receiving interface 21. An arc-shaped protrusion 5 is provided on the inner side wall of the stepped groove 210. The arc-shaped protrusion 5 is arranged at equal intervals along the length of the stepped groove 210. A retaining groove 6 is provided at the stepped connection of the stepped groove 210. The retaining groove 6 is rectangular and its upper edge is flush with the connection of the stepped groove 210. A spring piece 7 is inserted in the retaining groove 6. One side of the spring piece 7 is in contact with the arc-shaped protrusion 5. A limiting groove 8 is provided on the opposite side of the stepped groove 210 near the retaining groove 6. A retaining block 9 is provided in the limiting groove 8. A protrusion 91 is provided at the end of the retaining block 9 away from the limiting groove 8. The protrusion 91 forms an abutment contact with the side of the spring piece 7. One end of the spring piece 7 is fixed in the retaining groove 6, and the other end of the spring piece 7 extends to the port of the outer tube 2.

[0036] The sealing ring 3 is fitted onto the outer edge of the socket 21 of the outer pipe 2. The inner ring of the sealing ring 3 has, from top to bottom, an upper sealing strip 31, a gasket 32, and a lower sealing strip 33. The gasket 32 ​​fits against the upper edge of the outer pipe 2 and the inner side of the stepped groove 210. When the gasket 32 ​​is compressed, it extends onto the spring piece 7. The spring piece 7 provides elastic force during pipe connection, ensuring tight contact between the sealing ring 3 and the pipe. The limiting groove 8 is used to set the locking block 9, which limits the movement range of the spring piece 7, ensuring its stability during connection. The protrusion 91 of the locking block 9 forms abutment with the side of the spring piece 7. The contact element is used to fix the position of the spring 7 and prevent it from shifting during connection or use. In this utility model, firstly, the multi-layer sealing arrangement of the upper sealing strip 31, gasket 32 ​​and lower sealing strip 33 achieves a more reliable sealing effect and effectively prevents media leakage. Secondly, the interaction between the arc-shaped protrusion 5 and the spring 7 and gasket 32 ​​provides uniform pressure distribution and stable support, enhancing the stability and sealing of the connection when connecting pipes. At the same time, the pressure plate 4 provides a pressing seal, which provides a simpler and more reliable connection method compared with traditional mechanical fastening or welding.

[0037] In one embodiment of this application, preferably, the upper sealing strip 31 is disposed on the upper end of the receiving interface 21 of the outer pipe 2, the gasket 32 ​​is disposed on the receiving interface 21, and the bottom of the gasket 32 ​​is pressed on the spring piece 7, and the lower sealing strip 33 is attached to the lower end of the receiving interface 21 of the outer pipe 2. In this utility model, the sealing ring 3 adopts a multi-layer structure, including the upper sealing strip 31, the gasket 32 ​​and the lower sealing strip 33. This arrangement provides more reliable sealing performance and adapts to different pressure and temperature conditions. The spring piece 7 is not only used to fix the gasket 32, but also provides elastic force when the pipe is connected, which helps the sealing ring 3 to better fit the outer pipe 2 and enhance the sealing effect.

[0038] In one embodiment of this application, preferably, a positioning hole 51 is provided at the center of the arc-shaped protrusion 5, and a ball 71 is provided on the side of the spring piece 7 near the arc-shaped protrusion 5. The ball 71 and the positioning hole 51 are provided as a set in this utility model.

[0039] In one embodiment of this application, preferably, the bottom of the locking block 9 is embedded and fixed in the limiting groove 8, the middle end of the locking block 9 is set at the upper edge of the limiting groove 8, and the protrusion 91 at the top of the locking block 9 extends to the arc-shaped protrusion 5. In this utility model, the setting of the spring piece 7 not only provides elastic force to keep the sealing ring 3 fixed, but also enhances the stability of the pipe connection through the cooperation of the ball 71 and the positioning hole 51.

[0040] In one embodiment of this application, preferably, the locking block 9 is made of silicone. In this utility model, the embedded fixing method of the locking block 9 provides a stable support mechanism, enhances the reliability of the pipeline connection, and the silicone locking block 9 works together with the spring 7 and the arc-shaped protrusion 5 to provide a better sealing effect and prevent media leakage. Due to the chemical corrosion resistance and temperature resistance of silicone, the locking block 9 reduces the maintenance requirements of the pipeline system and extends its service life.

[0041] In one embodiment of this application, preferably, one end of the spring piece 7 is bent and fixed in the slot 6, the middle end of the spring piece 7 is attached to the arc-shaped protrusion 5, and the other end of the spring piece 7 is bent and disposed on the upper end surface of the outer tube 2. In this utility model, the setting of fixing both ends of the spring piece 7 and attaching the middle end provides better stability and reduces the uncertainty during pipe connection. The attachment of the middle end of the spring piece 7 to the arc-shaped protrusion 5 helps to achieve uniform pressure distribution at the pipe connection and helps to maintain the sealing effect of the sealing ring 3.

[0042] In one embodiment of this application, preferably, the pressure plate 4 is T-shaped, with its bottom embedded and fixed in the inner groove 110, and its upper end attached to the upper edge of the outer tube 2 of the inner tube 1. In this utility model, the upper end of the pressure plate 4 is attached to the inner sleeve 11 of the inner tube 1. This direct contact may help enhance the sealing of the pipe connection. Secondly, by applying appropriate pressure to the inner sleeve 11 through the pressure plate 4, the gasket 32 ​​and the spring piece 7 on the upper edge of the outer tube 2 are pressed and fixed, which can improve the sealing effect and prevent media leakage.

[0043] The specific implementation principle of this utility model is as follows: First, a stepped groove 210 is set at the socket 21. The spring piece 7 is installed on the stepped groove 210 and fixed at one end by the slot 6 on the stepped groove 210. The arc-shaped protrusion 5 provides a continuous support surface, so that the other end of the spring piece 7 is set at the upper edge of the outer pipe 2. Then, before the pipe connection, the sealing ring 3 is correctly installed in the predetermined position to ensure that the gasket 33 can be accurately aligned and press the spring piece 7 during connection. At the same time, a pressure plate 4 is set on the inner sleeve 11 of another pipe to ensure that it can effectively press down the gasket 33 and the spring piece 7 during connection to enhance the sealing effect, thereby greatly improving the sealing at the pipe connection and preventing media leakage to the greatest extent. In addition, the sealing ring 3 adopts a multi-layer sealing structure, which greatly improves the overall sealing performance of the pipe connection. In this application, it is necessary to adjust the size, shape or material of the pressure plate 4 and the spring piece 7 to ensure that they can provide the best sealing effect during operation, while maintaining sufficient flexibility to adapt to the thermal expansion and contraction of the pipe.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pipe with a bidirectional socket joint, comprising an inner pipe (1), an outer pipe (2), and a sealing ring (3), characterized in that, The inner wall of the inner tube (1) is provided with an inner sleeve (11), and the front edge of the inner sleeve (11) is provided with an inner groove (110), and a pressure plate (4) is embedded and fixed on the inner groove (110). The outer tube (2) includes a receiving port (21) and a through pipe (22). A stepped groove (210) is provided at the receiving port (21). An arc-shaped protrusion (5) is provided on the inner side wall of the stepped groove (210). A retaining groove (6) is provided at the stepped connection of the stepped groove (210). A spring piece (7) is inserted into the retaining groove (6). One side of the spring piece (7) fits against the arc-shaped protrusion (5). The stepped groove (210) A limiting groove (8) is provided on the opposite side of the card slot (6). A carding block (9) is provided in the limiting groove (8). A protrusion (91) is provided at the end of the carding block (9) away from the limiting groove (8). The protrusion (91) forms an abutment contact with the side of the spring piece (7). One end of the spring piece (7) is fixed in the card slot (6), and the other end of the spring piece (7) extends to the port of the outer tube (2). The sealing ring (3) is sleeved on the outer edge of the receiving interface (21) of the outer tube (2). The inner ring of the sealing ring (3) is provided with an upper sealing strip (31), a gasket (32) and a lower sealing strip (33) from top to bottom. The gasket (32) in the sealing ring (3) fits the upper edge of the outer tube (2) and the inner side of the stepped groove (210). When the gasket (32) is squeezed, it extends to the spring piece (7).

2. The pipe with a bidirectional socket joint according to claim 1, characterized in that, The upper sealing strip (31) is set on the upper end of the receiving interface (21) of the outer tube (2), the gasket (32) is set on the receiving interface (21), and the bottom of the gasket (32) is pressed on the spring sheet (7), and the lower sealing strip (33) is attached to the lower end of the receiving interface (21) of the outer tube (2).

3. The pipe with a bidirectional socket joint according to claim 1, characterized in that, A positioning hole (51) is provided at the center of the arc-shaped protrusion (5), and a ball (71) is provided on the side of the spring piece (7) near the arc-shaped protrusion (5). The ball (71) and the positioning hole (51) are set together.

4. The pipe with a bidirectional socket joint according to claim 1, characterized in that, The slot (6) is rectangular, and the upper edge of the slot (6) is flush with the connection point of the stepped slot (210).

5. The pipe with a bidirectional socket joint according to claim 1, characterized in that, The arc-shaped protrusions (5) are arranged at equal intervals along the length of the stepped groove (210).

6. The pipe with a bidirectional socket joint according to claim 1, characterized in that, The bottom of the locking block (9) is embedded and fixed in the limiting groove (8), the middle end of the locking block (9) is set at the upper edge of the limiting groove (8), and the protrusion (91) at the top of the locking block (9) extends to the arc protrusion (5).

7. The pipe with a bidirectional socket joint according to claim 1, characterized in that, The locking block (9) is made of silicone.

8. The pipe with a bidirectional socket joint according to claim 1, characterized in that, One end of the spring piece (7) is bent and fixed in the slot (6), the middle end of the spring piece (7) is attached to the arc-shaped protrusion (5), and the other end of the spring piece (7) is bent and set on the upper end face of the outer tube (2).

9. The pipe with a bidirectional socket joint according to claim 1, characterized in that, The pressure plate (4) is T-shaped, with its bottom embedded and fixed in the inner groove (110), and its upper end attached to the upper edge of the outer tube (2) of the inner tube (1).

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