A side seal structure

Abstract

The application relates to the sealing field, in particular to a side sealing structure, which comprises a loose joint, a loose nut, a tooth, a first sealing rubber ring and a first coil pipe joint, the end of the tooth close to the loose joint is sleeved with the first coil pipe joint, a side sealing part arranged at the end of the tooth is arranged between the inner side wall of the first coil pipe joint and the first sealing rubber ring, the loose joint is axially locked through thread cooperation with the first coil pipe joint, so that the first sealing rubber ring forms radial sealing; the effect that the sealing rubber ring is not easy to fall off is achieved, a flat socket is not needed, relevant components can be directly connected through the loose joint, installation is simple, and the sealing reliability and the installation efficiency are effectively improved.

Description

Technical Field

[0001] This application relates to the field of sealing, and in particular to a side-sealing structure. Background Technology

[0002] In fluid transport systems, coiled pipe fittings are critical components connecting pipelines, and their sealing performance and installation efficiency directly affect system reliability and construction costs. With continuous industrial development, refrigeration systems, HVAC systems, and industrial fluid transport pipelines place increasingly higher demands on the performance of coiled pipe fittings. Currently, most common coiled pipe fittings on the market employ an end-face sealing structure, achieving a seal by pressing a rubber ring against the end face. However, with increasing system operating pressures and higher installation efficiency requirements, the limitations of traditional end-face sealing structures are becoming increasingly apparent. In recent years, some manufacturers have attempted to improve sealing performance by increasing the thickness of the rubber ring or modifying materials, but the effects have been limited and the costs high.

[0003] In existing technologies, the sealing of coil connectors is mainly achieved through two methods: one is to use an end-face sealing structure, that is, to set an annular rubber ring on the contact end face between the threaded part and the connector, and to achieve a seal by tightening with bolts; the other is to use a threaded sealing structure, which is to achieve a seal by wrapping sealing tape or applying sealant to the threaded part. Furthermore, existing coil connectors typically need to be installed with a flat socket first, and then connected to a solenoid valve via a union.

[0004] The existing end-face sealing structure is prone to rubber ring detachment under high-pressure conditions, leading to seal failure; the rubber ring is also prone to misalignment during installation, requiring repeated adjustments; the threaded sealing structure is time-consuming to install and inconvenient to maintain. In addition, the existing connectors require the use of a flat socket, increasing the number of components and installation complexity. Utility Model Content

[0005] The purpose of this application is to provide a side-sealed structure.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a side-sealing structure, including a union joint, a union nut, a threaded nozzle, a first sealing ring, and a first coil joint; the first coil joint is fitted onto one end of the threaded nozzle near the union joint, and a side sealing portion is provided at the end of the threaded nozzle near the union joint; the first sealing ring is disposed between the side sealing portion of the threaded nozzle and the inner wall of the first coil joint; the union joint and the first coil joint are axially locked through the threaded engagement of the union nut, so that the first sealing ring is pressed together by the engagement of the side sealing portion of the threaded nozzle and the inner wall of the first coil joint to form a radial seal.

[0007] By adopting the above technical solution, the first sealing ring is placed between the side sealing part of the nozzle and the inner wall of the first coil connector. The axial locking is achieved by the threaded engagement of the union connector and the first coil connector through the union nut, so that the first sealing ring forms a radial seal. This effectively avoids the problem of the sealing ring easily shifting and falling off in the traditional end face sealing structure, and improves the stability of the seal. At the same time, the radial seal design can maintain the sealing performance more reliably under high pressure conditions, reducing the possibility of seal failure due to excessive pressure. Moreover, the union connector can be directly connected to external pipelines or valves without the need for a flat socket, simplifying the installation steps, reducing the number of parts and the complexity of installation, thereby improving installation efficiency and reducing construction costs. It is suitable for scenarios such as refrigeration systems, HVAC systems, and industrial fluid transportation pipelines that require high sealing performance and rapid installation.

[0008] Optionally, it also includes a body panel, the body panel having an installation through hole adapted to allow the toothed nozzle to pass through, the end of the toothed nozzle away from the union joint passing through the installation through hole; the end of the toothed nozzle away from the union joint is provided with a limiting structure, a second sealing ring is provided between the limiting structure and the body panel, the limiting structure and the body panel cooperate to clamp the second sealing ring.

[0009] By adopting the above technical solution, the mounting through-holes in the body panel allow the toothed nozzle to pass through, and the limiting structure at the end of the nozzle clamps the second sealing ring. This provides a stable mounting and positioning base for the overall structure through the body panel, ensuring the accuracy of the assembly position of each component. Furthermore, the clamping action of the limiting structure and the body panel on the second sealing ring forms an effective seal at the mating point between the toothed nozzle and the body panel, further improving the sealing integrity of the overall structure and preventing fluid leakage at this connection point. At the same time, this structural design eliminates the need for additional fixing components to achieve relative fixation between the body panel and the toothed nozzle, simplifying the assembly process and enhancing the stability and reliability of the structure in practical applications.

[0010] Optionally, a second coil connector is fitted onto the toothed nozzle. The second coil connector is located on the side of the body panel away from the limiting structure. By cooperating with the toothed nozzle, it forms an axial clamping force on the body panel, causing the body panel and the limiting structure to clamp the second sealing ring.

[0011] By adopting the above technical solution, a second coil connector is fitted onto the toothed nozzle and positioned on the side of the body panel away from the limiting structure. The cooperation between the second coil connector and the toothed nozzle creates an axial clamping force on the body panel, which further enhances the clamping force of the body panel and the limiting structure on the second sealing ring. This ensures that the second sealing ring is always in a stable clamped state, effectively preventing loosening of the seal due to long-term use or vibration, and improving the sealing reliability of this part. At the same time, this structural design uses the second coil connector to achieve axial limiting of the body panel, which can stabilize the position of the body panel without additional fastening components, simplifying the assembly steps, enhancing the connection stability of the overall structure, and better adapting to the needs of use under complex working conditions.

[0012] Optionally, the side sealing portion of the tooth nozzle is an annular recessed structure, and the outer peripheral surface of the annular recessed structure is in contact with the inner wall of the second sealing ring.

[0013] By adopting the above technical solution, the side sealing part of the nozzle is set as an annular recessed structure, and its outer circumferential surface is fitted with the inner wall of the second sealing ring. The annular recessed structure can axially limit the second sealing ring, preventing the sealing ring from shifting or misaligning during installation or use, and ensuring that the sealing ring is always in the preset sealing position. At the same time, the fitting structure between the annular recessed structure and the sealing ring increases the contact area between the two. Combined with the axial clamping force, the sealing ring can be subjected to more uniform force, further improving the sealing performance, reducing the risk of sealing failure due to improper ring position, and enhancing the stability and reliability of the structure in long-term use.

[0014] Optionally, the inner wall of the first coil connector is provided with an annular mounting groove at a corresponding position, and the first sealing ring is partially embedded in the mounting groove and forms an interference fit with the outer peripheral surface of the annular concave structure of the tooth.

[0015] By adopting the above technical solution, an annular mounting groove is set at the corresponding position on the inner side wall of the first coil connector, so that the first sealing ring is partially embedded in the mounting groove. This can form a precise positioning constraint on the first sealing ring, preventing axial movement or radial displacement during assembly or use, and ensuring that the sealing ring is always in an effective sealing position. At the same time, the first sealing ring and the outer circumferential surface of the annular concave structure of the toothed nozzle form an interference fit. The tight fit between the two can increase the sealing contact pressure, improve the reliability of radial sealing, and reduce the risk of leakage due to gaps. This structural design further enhances the stability and durability of the seal, ensuring that a good sealing effect can still be maintained under high pressure or vibration conditions.

[0016] Optionally, the first sealing ring is a nitrile rubber ring.

[0017] By adopting the above technical solution, the first sealing ring is set as a nitrile rubber ring. Utilizing the good oil resistance, wear resistance, and certain temperature resistance of nitrile rubber, it can adapt to the oily media that may come into contact with in the fluid transportation system, reducing the risk of aging and failure of the ring due to media erosion and extending the service life of the sealing structure. At the same time, nitrile rubber has good elasticity and compression deformation capacity. When pressed between the side sealing part of the toothed nozzle and the inner wall of the first coil joint, it can fill the mating gap more tightly, ensuring the reliability of the radial seal. Especially under long-term use or temperature change conditions, it can still maintain stable sealing performance, improving the applicability and durability of the overall structure.

[0018] Optionally, a third sealing ring is provided between the first coil connector and the union connector. The union connector has an annular sealing groove at its end near the first coil connector. The third sealing ring is embedded in the annular sealing groove and is clamped and pressed by the axial fit between the first coil connector and the union connector to form an end face seal.

[0019] By adopting the above technical solution, a third sealing ring is set between the first coil joint and the union joint, and embedded in the annular sealing groove at the end of the union joint. The axial fit between the first coil joint and the union joint achieves clamping and pressing to form an end face seal. This adds an end face sealing defense line on top of the radial seal, constructing a multi-seal system and significantly improving the sealing redundancy of the overall structure. The limiting effect of the annular sealing groove on the third sealing ring can prevent it from shifting during assembly or use, ensuring the accuracy of the sealing position. The clamping force generated by the axial fit can fully deform the ring to fill the mating gap, effectively preventing fluid leakage from the mating end face of the threaded nozzle and the union joint. This is especially suitable for high-pressure fluid transportation scenarios, further enhancing the sealing reliability and safety of the structure.

[0020] In summary, this application has at least the following beneficial effect: 1. The first sealing ring is placed between the side sealing part of the nozzle and the inner wall of the first coil connector. The axial locking is achieved by the threaded engagement of the union connector and the first coil connector through the union nut, so that the first sealing ring forms a radial seal. This effectively avoids the problem of the sealing ring easily shifting and falling off in the traditional end face sealing structure, and improves the stability of the seal. At the same time, the radial seal design can maintain the sealing performance more reliably under high pressure conditions, reducing the possibility of seal failure due to excessive pressure. Moreover, it can be directly connected to external pipelines or valves through the union connector without the need for a flat socket, simplifying the installation steps, reducing the number of parts and the installation complexity, thereby improving installation efficiency and reducing construction costs. It is suitable for scenarios such as refrigeration systems, HVAC systems, and industrial fluid transportation pipelines that require high sealing performance and rapid installation.

[0021] 2. The mounting holes on the body panel allow the toothed nozzle to pass through, and the limiting structure at the end of the nozzle clamps the second sealing ring. This provides a stable mounting base for the overall structure, ensuring the accuracy of the assembly positions of each component. Furthermore, the clamping action of the limiting structure and the body panel on the second sealing ring creates an effective seal at the mating point between the nozzle and the body panel, further enhancing the overall sealing integrity and preventing fluid leakage at this connection point. This design also eliminates the need for additional fixing components to achieve relative fixation between the body panel and the nozzle, simplifying the assembly process and enhancing the stability and reliability of the structure in practical applications. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a side-sealed structure. Figure 2 This is a cross-sectional view of a side-sealed structure; Figure 3 This is an exploded view of a side-sealed structure.

[0023] Figure Labels 1. Union connector; 2. Union nut; 3. Threaded nozzle; 4. First sealing ring; 5. First coil connector; 6. Side sealing part; 7. Body panel; 8. Mounting through hole; 9. Limiting structure; 10. Second sealing ring; 11. Second coil connector; 12. Annular mounting groove; 13. Third sealing ring; 14. Annular sealing groove. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings.

[0025] In this embodiment, refer to Figures 1-3 The side-sealing structure provided in this application includes a union joint 1, a union nut 2, a threaded nozzle 3, a first sealing ring 4, and a first coiled connector 5. The first coiled connector 5 is fitted onto the end of the threaded nozzle 3 near the union joint 1. A side-sealing portion 6 is provided at the end of the threaded nozzle 3 near the union joint 1. The first sealing ring 4 is disposed between the side-sealing portion 6 of the threaded nozzle 3 and the inner wall of the first coiled connector 5. The union joint 1 and the first coiled connector 5 are axially locked through the threaded engagement of the union nut 2, allowing the first sealing ring 4 to be pressed together by the engagement of the side-sealing portion 6 of the threaded nozzle 3 and the inner wall of the first coiled connector 5 to form a radial seal, thereby enhancing sealing stability and reliability. This is because, compared to traditional end-face sealing, the side-sealing method better prevents the sealing ring from shifting and falling off, and maintains good sealing performance even under high-pressure conditions.

[0026] Specifically, the nozzle 3 is one of the key components in this structure. The nozzle 3 is typically made of metal, such as stainless steel or copper alloy, which offers good strength and corrosion resistance. It is tubular in shape, with one end for connection to other components and the other end equipped with a side sealing portion 6. The side sealing portion 6 can be an annular recessed structure, which allows for better engagement with the first sealing ring 4, ensuring a proper seal. Of course, the side sealing portion 6 can also employ other similar structures, such as an annular protrusion.

[0027] The first sealing ring 4 is made of nitrile rubber. Nitrile rubber has good oil resistance, wear resistance, and sealing performance, making it suitable for use in fluid transport systems. The first sealing ring 4 is annular, with its inner diameter matching the outer circumferential surface of the side sealing portion 6 of the nozzle 3, and its outer diameter matching the inner wall of the first coil connector 5. During installation, the first sealing ring 4 is partially embedded in the annular mounting groove 12 at the corresponding position on the inner wall of the first coil connector 5, and forms an interference fit with the outer circumferential surface of the annular recessed structure of the nozzle 3. This fit ensures that the first sealing ring 4 will not easily shift under high pressure, thus guaranteeing the reliability of the seal. In addition to nitrile rubber rings, other rubber materials with good sealing performance, such as fluororubber rings, can also be used.

[0028] The first coil connector 5 is generally also made of metal, and its interior has a structure that mates with the threaded nozzle 3 and the first sealing ring 4. The inner wall of the first coil connector 5 has an annular mounting groove 12 for installing the first sealing ring 4. The size and shape of this annular mounting groove 12 must match the first sealing ring 4 to ensure that the first sealing ring 4 can be stably installed within it. The first coil connector 5 is fitted together with the threaded nozzle 3 and connected to the union connector 1 via the union nut 2.

[0029] The union 1 is used to connect to other pipelines or equipment. It is axially locked to the first coil connector 5 through the threaded engagement of the union nut 2. The union nut 2 is usually also made of metal and has internal threads that can engage with the external threads of the union 1 and the first coil connector 5. During installation, tightening the union nut 2 ensures a tight connection between the union 1 and the first coil connector 5, thereby applying pressure to the first sealing ring 4 to form a radial seal.

[0030] The combination logic of the union joint 1, union nut 2, threaded nozzle 3, first sealing ring 4, and first coil joint 5 is as follows: the threaded nozzle 3 is fitted inside the first coil joint 5; the first sealing ring 4 is installed between the side sealing part 6 of the threaded nozzle 3 and the inner wall of the first coil joint 5; the union joint 1 is connected to the first coil joint 5 through the union nut 2. When the union nut 2 is tightened, pressure is applied to the first sealing ring 4, causing it to form a radial seal between the side sealing part 6 of the threaded nozzle 3 and the inner wall of the first coil joint 5. This combination effectively avoids the problem of traditional end-face sealing rings shifting and falling off, improving the stability and reliability of the seal.

[0031] In addition, the structure also includes a body panel 7. The body panel 7 is generally made of metal or plastic and has a mounting through hole 8 for the toothed nozzle 3 to pass through. The end of the toothed nozzle 3 away from the union joint 1 passes through the mounting through hole 8, and the end of the toothed nozzle 3 away from the union joint 1 has a limiting structure 9. The limiting structure 9 can be an annular protrusion or other similar structure, used to limit the position of the toothed nozzle 3. A second sealing ring 10 is provided between the limiting structure 9 and the body panel 7. The limiting structure 9 and the body panel 7 cooperate to clamp the second sealing ring 10 to form a seal.

[0032] A second coil connector 11 is also fitted onto the toothed nozzle 3. The second coil connector 11 is located on the side of the body panel 7 away from the limiting structure 9. The second coil connector 11, through its engagement with the toothed nozzle 3, forms an axial clamping force on the body panel 7, causing the body panel 7 and the limiting structure 9 to clamp the second sealing ring 10. The engagement between the second coil connector 11 and the toothed nozzle 3 can be a threaded engagement or other suitable connection method.

[0033] A third sealing ring 13 is provided between the first coil connector 5 and the union connector 1. The union connector 1 has an annular sealing groove 14 at its end near the first coil connector 5, and the third sealing ring 13 is embedded within the annular sealing groove 14. When the first coil connector 5 and the union connector 1 are axially fitted together, the third sealing ring 13 is clamped and pressed, forming an end-face seal. The third sealing ring 13 can also be made of nitrile rubber or other materials with good sealing performance.

[0034] The implementation principle of this embodiment is as follows: This embodiment utilizes a side sealing structure, where the side sealing part 6 of the toothed nozzle 3 cooperates with the inner wall of the first coil connector 5 to press the first sealing ring 4 to form a radial seal. This avoids the problem of easy displacement and detachment of the traditional end-face sealing ring, improving the stability and reliability of the seal. Simultaneously, under high-pressure conditions, the side sealing structure can better withstand pressure, ensuring sealing performance. Furthermore, the cooperation of the body panel 7, the second sealing ring 10, and the second coil connector 11, as well as the third sealing ring 13 between the first coil connector 5 and the union connector 1, further enhances the sealing performance of the entire structure. Moreover, this structure simplifies the installation steps, saves installation space, and makes production and installation more convenient, representing a significant improvement and contribution compared to existing technologies.

[0035] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A side-sealed structure, characterized in that, The device includes a union connector (1), a union nut (2), a threaded nozzle (3), a first sealing ring (4), and a first coil connector (5). The first coil connector (5) is fitted onto one end of the threaded nozzle (3) near the union connector (1). A side sealing part (6) is provided at the end of the threaded nozzle (3) near the union connector (1). The first sealing ring (4) is disposed between the side sealing part (6) of the threaded nozzle (3) and the inner wall of the first coil connector (5). The union connector (1) and the first coil connector (5) are axially locked through the threaded engagement of the union nut (2), so that the first sealing ring (4) is pressed together by the engagement of the side sealing part (6) of the threaded nozzle (3) and the inner wall of the first coil connector (5) to form a radial seal.

2. The side-sealing structure according to claim 1, characterized in that, It also includes a body panel (7), which has an installation through hole (8) adapted to allow the toothed nozzle (3) to pass through. The toothed nozzle (3) passes through the installation through hole (8) at one end away from the union joint (1). A limiting structure (9) is provided at the end of the toothed nozzle (3) away from the union joint (1). A second sealing ring (10) is provided between the limiting structure (9) and the body panel (7). The limiting structure (9) cooperates with the body panel (7) to clamp the second sealing ring (10).

3. The side-sealing structure according to claim 2, characterized in that, The toothed nozzle (3) is fitted with a second coil connector (11). The second coil connector (11) is located on the side of the body panel (7) away from the limiting structure (9). Through its cooperation with the toothed nozzle (3), it forms an axial clamping force on the body panel (7), so that the body panel (7) and the limiting structure (9) clamp the second sealing ring (10).

4. A side-sealing structure according to claim 2, characterized in that, The side sealing part (6) of the toothed nozzle (3) is an annular concave platform structure, and the outer peripheral surface of the annular concave platform structure is in contact with the inner wall of the second sealing ring (10).

5. A side-sealing structure according to claim 4, characterized in that, The inner wall of the first coil connector (5) is provided with an annular mounting groove (12) at the corresponding position. The first sealing ring (4) is partially embedded in the annular mounting groove (12) and forms an interference fit with the outer circumferential surface of the annular concave platform structure of the toothed nozzle (3).

6. The side-sealing structure according to claim 1, characterized in that, The first sealing ring (4) is a nitrile rubber ring.

7. A side-sealing structure according to claim 1, characterized in that, A third sealing ring (13) is provided between the first coil connector (5) and the union connector (1). The union connector (1) has an annular sealing groove (14) at its end near the first coil connector (5). The third sealing ring (13) is embedded in the annular sealing groove (14) and is clamped and pressed by the axial fit between the first coil connector (5) and the union connector (1) to form an end face seal.

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