Rubber joint

Abstract

The utility model relates to a rubber joint which comprises a first connector and a second connector, a corrugated section is arranged between the first connector and the second connector, the first connector and the second connector are communicated through the corrugated section, and the corrugated section comprises a first expansion joint, a second expansion joint and a third expansion joint which are sequentially expanded from the first connector to the second connector. The same positions of the circumferential edges of the first telescopic joint, the second telescopic joint and the third telescopic joint are fixedly connected, and the other sides, away from the connecting positions, of the first telescopic joint, the second telescopic joint and the third telescopic joint are configured to be close to or away from one another under the action of external force. According to the rubber joint designed by the utility model, the expansion joints which are fixedly connected are adopted through the structural design, so that stress concentration caused by overlapping of single expansion joint materials is effectively reduced, the overall stability and durability of the structure are enhanced, weak links at the bent part of the joint are eliminated, and the service life of the joint is prolonged. The performance of the rubber joint in a dynamic load or vibration environment is obviously improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of joints, in particular to a rubber joint. Background Art

[0002] In the existing technology, rubber joints play a vital role in industrial piping systems due to their excellent flexibility and shock-absorbing properties. They are mainly used to connect equipment to accommodate pipeline displacement caused by thermal expansion, mechanical vibration or installation errors. In these joints, the design of the bellows or corrugated sections allows the pipeline to bend and expand within a certain range, thereby meeting the needs of system movement.

[0003] Although traditional rubber joints use a bellows design that can be bent freely 360 degrees, providing extremely high flexibility, this design also brings some defects, especially in the bending area of ​​the joint, the tube wall becomes weaker due to the overlap of materials, which often becomes a potential failure point. Specifically: when the rubber joint is short and compensation is required in a specific direction, the material overlap and stress concentration at the bend are more likely to cause premature failure of the joint. This situation is particularly obvious in dynamic load or vibration environments, limiting the service life and reliability of the joint. Summary of the invention

[0004] In order to solve the above problems, the utility model provides a rubber joint that can provide specific direction compensation when the length is short, while enhancing the structural stability of the joint, reducing weak links to adapt to dynamic loads or vibration environments, thereby extending the service life of the joint.

[0005] In order to achieve the above-mentioned purpose, the rubber joint designed by the utility model includes a first interface and a second interface, a corrugated section is provided between the first interface and the second interface, and the first interface and the second interface are connected through the corrugated section, the corrugated section includes a first telescopic section, a second telescopic section and a third telescopic section that sequentially expand in diameter from the first interface to the second interface, the first telescopic section, the second telescopic section and the third telescopic section are fixedly connected at the same position on the circumferential edge, and the other side of the first telescopic section, the second telescopic section and the third telescopic section away from their connection position is configured to be able to approach or move away from each other under the action of external force.

[0006] In order to provide a structure with stronger integrity and consistency, the first telescopic joint, the second telescopic joint, the third telescopic joint, the first interface and the second interface are integrally injection molded.

[0007] In order to meet the installation scenarios with limited space, the radial cross-sections of the first telescopic joint, the second telescopic joint, the third telescopic joint, the first interface and the second interface are all elliptical, and the long diameters of the first telescopic joint, the second telescopic joint, the third telescopic joint, the first interface and the second interface all extend in the same direction.

[0008] A further solution is that the short diameters of the first telescopic joint, the second telescopic joint and the third telescopic joint are equal, and the long diameters of the first telescopic joint, the second telescopic joint and the third telescopic joint increase in sequence.

[0009] In order to adapt to a larger bending radius, one side at which the first telescopic joint, the second telescopic joint and the third telescopic joint are fixedly connected is located in the extension direction of their long diameters.

[0010] In order to enhance the strength of the corrugated section, the total length of the corrugated section is smaller than the sum of the lengths of the first interface and the second interface.

[0011] In order to ensure the stability of the joint connection, at least one sealing groove extending along the circumferential direction is provided on the circumferential surface of the first interface, and a positioning protrusion integrally formed with the first interface is provided on the bottom surface of the sealing groove.

[0012] The rubber joint designed by the utility model adopts a fixedly connected expansion joint through structural design, which effectively reduces the stress concentration caused by the overlapping materials of a single expansion joint, thereby enhancing the overall stability and durability of the structure, eliminating the weak link at the bend of the joint, and significantly improving the performance of the rubber joint in a dynamic load or vibration environment, extending its service life, and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0014] Figure 2 is a plan view of a corrugated section of an embodiment of the present application;

[0015] Figure 3 is a plan view of a first interface according to an embodiment of the present application;

[0016] Figure 4 is a schematic plan view of a second interface in an embodiment of the present application;

[0017] Figure 5 It is a schematic diagram of the injection molding of the connector according to an embodiment of the present application.

[0018] Among them: a first interface 10 , a second interface 20 , a corrugated section 30 , a first telescopic joint 31 , a second telescopic joint 32 , a third telescopic joint 33 , a sealing groove 11 , and a positioning protrusion 12 . DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0020] Example 1.

[0021] like Figure 1-5 As shown, the rubber joint described in this embodiment is used for a shorter length requirement and needs to provide compensation in a specific direction. It includes a first interface 10 and a second interface 20 for connecting a pipeline system / docking equipment. A corrugated section 30 is provided between the first interface 10 and the second interface 20, and the first interface 10 and the second interface 20 are connected through the corrugated section 30. The design of the corrugated section 30 allows the joint to provide necessary flexibility and compensation in the pipeline system / between the docking equipment.

[0022] The corrugated section 30 includes a first telescopic section 31, a second telescopic section 32 and a third telescopic section 33 which expand radially in sequence from the first interface 10 to the second interface 20. The first telescopic section 31, the second telescopic section 32 and the third telescopic section 33 are fixedly connected at the same position of the circumferential edge, and the other side of the first telescopic section 31, the second telescopic section 32 and the third telescopic section 33 away from their connection position is configured to be able to approach or move away from each other under the action of external force.

[0023] When subjected to external forces, such as pressure changes, mechanical vibrations or thermal expansion in the pipeline system, the unfixed sides of the first expansion joint 31, the second expansion joint 32 and the third expansion joint 33 can approach or move away from each other to adapt to these changes. At the same time, the fixed side of the first expansion joint 31, the second expansion joint 32 and the third expansion joint 33 provides a more solid structure, which can avoid the stress concentration caused by material overlap in the bending part of the joint in the related technology. In the past, when subjected to dynamic loads or vibrations, the joint was effectively strengthened to reduce the points where the joint might fail, thereby improving durability and reliability and extending the service life of the product.

[0024] In this embodiment, in order to provide a structure with stronger integrity and consistency, the first telescopic joint 31, the second telescopic joint 32, the third telescopic joint 33, the first interface 10 and the second interface 20 are integrally injection molded. Figure 5 As shown, the one-piece injection molding process provides an overall structure without seams, enhances the integrity and consistency of the joints, and can show higher durability in long-term operation.

[0025] In some embodiments, Figure 3 and Figure 4 As shown, the radial cross-sections of the first telescopic joint 31, the second telescopic joint 32, the third telescopic joint 33, the first interface 10 and the second interface 20 are all elliptical, and the long diameters of the first telescopic joint 31, the second telescopic joint 32, the third telescopic joint 33, the first interface 10 and the second interface 20 extend in the same direction.

[0026] In this embodiment, the elliptical cross-sectional design meets the use requirements of space-constrained installation scenarios while maintaining strength. Compared with the circular cross-section, the circular cross-section has a more uniform distribution and its torsional strength is higher than that of the elliptical cross-section. Therefore, the elliptical cross-section can obtain greater flexibility. In addition, the long diameters of all these components (10, 20, 31, 32, 33) extend in the same direction, which helps to maintain the consistency and symmetry of the joint during installation and use.

[0027] In some embodiments, the short diameters of the first telescopic joint 31, the second telescopic joint 32, and the third telescopic joint 33 are equal, and the long diameters (the straight line segments passing through the two foci of the ellipse) of the first telescopic joint 31, the second telescopic joint 32, and the third telescopic joint 33 are increased in sequence. In this embodiment, the short diameters of the first telescopic joint 31, the second telescopic joint 32, and the third telescopic joint 33 are designed to be equal, which is suitable for the consistency and uniformity of the space occupied by the joint in the extension direction of the short diameter (the straight line segment passing through the center of the ellipse and perpendicular to the long diameter), and because the long diameter of the telescopic joint increases, it not only gives the joint greater bending flexibility in the long diameter direction, but also increases the diameter area of ​​the joint to accommodate a larger fluid throughput while maintaining the structural integrity and performance of the joint.

[0028] In some embodiments, Figure 1 and Figure 2 As shown, one side where the first telescopic section 31, the second telescopic section 32 and the third telescopic section 33 are fixedly connected is located in the extension direction of the long diameter thereof. In this way, the corrugated section 30 can achieve a larger bending radius to meet the need for a larger turning angle or to adapt to a complex layout.

[0029] In some embodiments, in order to enhance the strength of the corrugated section 30, the total length of the corrugated section 30 is less than the sum of the lengths of the first interface 10 and the second interface 20. In this way, the corrugated section 30 is shorter, so that the entire rubber joint has higher rigidity when connecting the pipe, which helps to withstand greater external forces.

[0030] In some embodiments, Figure 2 As shown, in order to ensure the stability of the joint connection, at least one sealing groove 11 extending in the circumferential direction is provided on the circumferential surface of the first interface 10, and a positioning protrusion 12 integrally formed with the first interface 10 is provided on the bottom surface of the sealing groove 11. With this structural design, a sealing element, such as an O-ring or other sealing gasket, can be installed in the sealing groove 11 to ensure a good seal between the joint and the external device / pipeline. At the same time, the positioning protrusion 12 is formed by an integral molding process, so that the positioning protrusion 12 can interact with the corresponding structure of the external device / pipeline, providing a stable mechanical lock and reducing the possibility of loosening due to vibration or pressure changes.

[0031] The rubber joint designed by the utility model adopts a fixedly connected expansion joint through structural design, which effectively reduces the stress concentration caused by the overlapping materials of a single expansion joint, thereby enhancing the overall stability and durability of the structure, eliminating the weak link at the bend of the joint, and significantly improving the performance of the rubber joint in a dynamic load or vibration environment, extending its service life, and reducing maintenance costs.

[0032] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 a limitation on the present invention.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A rubber joint, comprising a first interface and a second interface, It is characterized in that A corrugated section is provided between the first interface and the second interface, and the first interface and the second interface are connected through the corrugated section, and the corrugated section includes a first telescopic section, a second telescopic section and a third telescopic section which sequentially expand in diameter from the first interface to the second interface, and the first telescopic section, the second telescopic section and the third telescopic section are fixedly connected at the same position on the circumferential edge, and the other side of the first telescopic section, the second telescopic section and the third telescopic section away from their connection position is configured to be able to approach or move away from each other under the action of external force.

2. The rubber joint according to claim 1, It is characterized in that The first telescopic joint, the second telescopic joint, the third telescopic joint, the first interface and the second interface are integrally injection molded.

3. The rubber joint according to claim 1, It is characterized in that The radial cross-sections of the first telescopic joint, the second telescopic joint, the third telescopic joint, the first interface and the second interface are all elliptical, and the long diameters of the first telescopic joint, the second telescopic joint, the third telescopic joint, the first interface and the second interface extend in the same direction.

4. The rubber joint according to claim 3, It is characterized in that The short diameters of the first telescopic joint, the second telescopic joint and the third telescopic joint are equal, and the long diameters of the first telescopic joint, the second telescopic joint and the third telescopic joint increase in sequence.

5. The rubber joint according to claim 4, It is characterized in that The side where the first telescopic joint, the second telescopic joint and the third telescopic joint are fixedly connected is located in the extension direction of the long diameter thereof.

6. The rubber joint according to claim 1, It is characterized in that The total length of the corrugated section is less than the sum of the lengths of the first interface and the second interface.

7. The rubber joint according to any one of claims 1 to 6, It is characterized in that At least one sealing groove extending in the circumferential direction is provided on the circumferential surface of the first interface, and a positioning protrusion integrally formed with the first interface is provided on the bottom surface of the sealing groove.

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