A type of anti-loosening sealing connection structure for a connector

Abstract

This invention relates to the field of pipeline system connection and application technology, specifically to a non-loosening sealing connection structure for a union fitting. It includes a fitting socket and a sealing connection assembly. The fitting socket is located on a first fitting, and the sealing connection assembly is fitted onto a second fitting. The fitting socket and the second fitting are connected via a socket. The sealing connection assembly includes a sealing ring, a tightening ring, and a pipe cap ring. The sealing ring is used for a tight seal with the fitting socket. The pipe cap ring is threaded to the fitting socket. The tightening ring is engaged between the sealing ring and the pipe cap ring, forming a toothed connection. Tightening the pipe cap ring compresses the tightening ring and fixes it in place through the toothed engagement. The tightening ring then compresses the sealing ring to form a sealed connection. This invention can effectively improve the stability and long-lasting sealing effect of pipe fitting connections.

Description

Technical Field

[0001] This invention relates to the field of pipeline system connection and application technology, specifically to a loose-sealing connection structure for a union fitting. Background Technology

[0002] In water supply and drainage systems and other fluid transportation industries, the use of various pipe fittings is enormous. In order to adapt to different transportation requirements, pipe fittings often need to be cut to the required length. Therefore, whether the connection between pipe fittings is tight and leak-proof is very important for the transportation system. If the leak-proof performance is not ideal, it will cause leakage of the transported material, which will not only result in poor quality, waste of resources and increased costs, but may also lead to safety accidents in serious cases.

[0003] Traditional pipelines are constructed by connecting pipe fittings, which typically use simple threaded connections to form various piping systems. However, traditional simple threaded connections suffer from unstable connections and unreliable seals, making them prone to leakage of the transported materials. Therefore, improving the stability and long-term sealing of pipe fitting connections is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a non-loosening sealing connection structure for a fitting, which can effectively improve the stability of the fitting connection and the long-lasting sealing effect when applied.

[0005] The technical solution adopted in this invention is as follows:

[0006] A non-loosening sealing connection structure for a union fitting includes a fitting socket and a sealing connection assembly. The fitting socket is disposed on a first fitting, and the sealing connection assembly is sleeved on a second fitting. The fitting socket is used to insert into the second fitting. The sealing connection assembly includes a sealing ring, a tightening ring, and a pipe cap ring. The sealing ring is used to seal and fit with the fitting socket. The pipe cap ring forms a detachable connection with the fitting socket. The tightening ring is engaged between the sealing ring and the pipe cap ring, with one end abutting against the sealing ring and the other end forming a toothed connection with the pipe cap ring.

[0007] Based on the above technical content, by inserting the second pipe fitting into the pipe fitting socket, fitting the sealing ring against the pipe fitting socket, and connecting the pipe cap ring to the pipe fitting socket, the tightening ring is squeezed between the sealing ring and the pipe cap ring. One end of the tightening ring presses against the sealing ring, making it tightly fit against the pipe fitting socket, thereby effectively improving the sealing performance. At the same time, the toothed connection between the tightening ring and the pipe cap ring ensures the stability of the connection between the tightening ring and the pipe cap ring, preventing the pipe cap ring from loosening due to vibrations caused by the materials being transported in the first and second pipe fittings. This makes the connection between the first and second pipe fittings more stable and permanently maintains the sealing effect of the pipe fitting connection.

[0008] In one possible design, the pipe fitting socket has a bevel on the side close to the second pipe fitting, and the maximum inner diameter of the bevel is the port of the pipe fitting socket. The cross-sectional shape of the sealing ring matches the bevel of the pipe fitting socket, and the sealing ring is embedded in the bevel. The pipe cap ring has a groove, the bottom of the groove forms a toothed connection with the tightening ring, and the groove wall forms a detachable connection with the side of the pipe fitting socket away from the second pipe fitting.

[0009] Based on the above technical content, by embedding the sealing ring into the bevel of the pipe fitting socket, applying pressure to the tightening ring through the pipe cap ring, and then squeezing the sealing ring into the bevel of the pipe fitting socket through the tightening ring, the sealing ring can form a better sealing fit with the pipe fitting socket and the second pipe fitting, thereby improving the sealing performance.

[0010] In one possible design, the bottom of the slot is provided with a toothed groove, and the end of the tightening ring connected to the cap ring is provided with a retaining tooth, which forms a toothed connection with the toothed groove.

[0011] Based on the above technical content, the interlocking of the teeth on the tightening ring and the grooves on the tube cap ring can effectively improve the connection stability between the tightening ring and the tube cap ring and prevent the tube cap ring from loosening.

[0012] In one possible design, the locking teeth are trapezoidal teeth, and the shape of the tooth groove is adapted to the locking teeth.

[0013] Based on the above technical content, by setting trapezoidal locking teeth, the engagement stability between the locking teeth and the tooth groove can be improved.

[0014] In one possible design, the groove wall of the slot is provided with internal threads, and the side of the pipe fitting socket opposite to the second pipe fitting is provided with external threads, and the pipe cap ring forms a threaded connection with the pipe fitting socket.

[0015] Based on the above technical content, the threaded connection between the pipe cap ring and the pipe fitting socket facilitates the connection and installation of the pipe fitting, forming a fixed preload force, so that the locking teeth and the groove teeth mesh.

[0016] In one possible design, the sealing ring has a compression groove at one end near the bottom of the slot, and the tightening ring is placed in the compression groove.

[0017] Based on the above technical content, by placing the tightening ring in the compression groove and applying pressure to the tightening ring through the cap ring, the sealing ring can be compressed and deformed, extending to the side, thereby achieving a better sealing effect.

[0018] In one possible design, the sealing ring has an extension section on the side close to the second pipe fitting, and the extension section is squeezed between the tightening ring and the second pipe fitting.

[0019] Based on the above technical content, by compressing the extended section of the sealing ring, the extended section is tightly compressed and adhered to the second pipe fitting, thereby increasing the sealing area and improving the sealing effect.

[0020] In one possible design, the end face of the tightening ring that contacts the sealing ring is provided with extrusion teeth.

[0021] Based on the above technical content, the sealing ring is deformed by extruding the protruding teeth, and the corresponding compression is maintained to increase the sealing effect of the sealing ring. At the same time, the extruding teeth are pressed into the sealing ring, which can prevent the tightening ring and the cap ring from rotating and loosening due to vibration, thus preventing unstable connection.

[0022] In one possible design, the end face of the tightening ring that contacts the sealing ring is arc-shaped.

[0023] Based on the above technical content, the arc-shaped design of the contact end face can make the pressure transmission more uniform, and will not result in the corners not being filled, thereby enhancing the sealing effect.

[0024] In one possible design, the sealing ring is a rubber ring.

[0025] Based on the above technical content, the rubber ring has good ductility, and using it as a sealing ring can improve the sealing effect.

[0026] The beneficial effects of this invention are as follows:

[0027] This invention involves inserting a second pipe fitting into the socket of a pipe fitting, fitting a sealing ring against the socket, and connecting a pipe cap ring to the socket. A tightening ring is then squeezed between the sealing ring and the pipe cap ring, with one end of the tightening ring pressing against the sealing ring to ensure a tight fit with the socket, effectively improving sealing performance. Simultaneously, the toothed connection between the tightening ring and the pipe cap ring ensures a stable connection, preventing the pipe cap ring from loosening due to vibrations caused by the materials being transported within the first and second pipe fittings. This results in a more secure connection between the first and second pipe fittings, enhancing the long-lasting sealing effect of the pipe connection. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is an assembly diagram of the present invention;

[0030] Figure 2This is an exploded view of the present invention;

[0031] Figure 3 This is a first-person view diagram of the tube cap ring.

[0032] Figure 4 This is a second-view diagram of the tube cap ring;

[0033] Figure 5 This is a schematic diagram of the tightening ring structure;

[0034] Figure 6 This is a schematic diagram of the cross-section of the sealing ring.

[0035] In the diagram: 1. Pipe fitting socket; 2. First pipe fitting; 3. Second pipe fitting; 4. Sealing ring; 5. Tightening ring; 6. Pipe cap ring; 7. Groove; 8. Toothed groove; 9. Toothed groove; 10. Extrusion groove; 11. Extrusion protrusion. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is intended to aid in understanding the invention, but does not constitute a limitation thereof. The specific structural and functional details disclosed herein are merely for describing exemplary embodiments of the invention. However, the invention can be embodied in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0037] It should be understood that the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Although the terms "first," "second," etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit, without departing from the scope of the exemplary embodiments of the invention.

[0038] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0039] It should be understood that in the description of this invention, the terms "upper," "vertical," "inner," "outer," etc., indicate the orientation or positional relationship as commonly placed when the product of this invention is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] It should be understood that when a unit is referred to as being "connected," "linked," or "coupled" to another unit, it can be directly connected or coupled to another unit, or an intermediate unit may exist. Conversely, when a unit is referred to as being "directly connected" or "directly coupled" to another unit, no intermediate unit exists. Other words used to describe relationships between units should be interpreted in a similar manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.).

[0041] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” “containing,” and / or “including” as used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, and do not exclude the presence or addition of one or more other features, quantities, steps, operations, units, components, and / or combinations thereof.

[0043] It should also be noted that in some alternative embodiments, the functions / actions may appear in a different order than those shown in the figures. For example, depending on the functions / actions involved, they may actually be performed substantially concurrently, or sometimes the two figures shown consecutively may be performed in reverse order.

[0044] Specific details are provided in the following description to provide a complete understanding of the exemplary embodiments. However, those skilled in the art will understand that the exemplary embodiments can be implemented without these specific details. For example, the system may be shown in block diagrams to avoid obscuring the example with unnecessary details. In other embodiments, well-known processes, structures, and techniques may be shown without unnecessary details to avoid obscuring the exemplary embodiments.

[0045] Example 1:

[0046] This embodiment provides a non-loosening sealing connection structure for a flexible connector, such as... Figures 1 to 2 As shown, the device includes a pipe fitting socket 1 and a sealing connection assembly. The pipe fitting socket 1 is disposed on a first pipe fitting 2, and the sealing connection assembly is sleeved on a second pipe fitting 3. The pipe fitting socket 1 is used to insert into the second pipe fitting 3. The sealing connection assembly includes a sealing ring 4, a tightening ring 5, and a pipe cap ring 6. The sealing ring 4 is used to seal and fit with the pipe fitting socket 1. The pipe cap ring 6 forms a detachable connection with the pipe fitting socket 1. The tightening ring 5 is engaged between the sealing ring 4 and the pipe cap ring 6, with one end abutting against the sealing ring 4 and the other end forming a toothed connection with the pipe cap ring 6.

[0047] In practice, the sealing ring 4, tightening ring 5, and pipe cap ring 6 can be first fitted onto the second pipe fitting 3. The second pipe fitting 3 is then inserted into the pipe fitting socket 1. The sealing ring 4 is then fitted against the pipe fitting socket 1, and the pipe cap ring 6 is connected to the pipe fitting socket 1. This causes the tightening ring 5 to be squeezed between the sealing ring 4 and the pipe cap ring 6, with one end of the tightening ring 5 pressing against the sealing ring 4, ensuring a tight fit with the pipe fitting socket 1 and effectively improving sealing performance. Simultaneously, the toothed connection between the tightening ring 5 and the pipe cap ring 6 ensures the stability of their connection, preventing the pipe cap ring 6 from loosening due to vibrations caused by the transported materials within the first pipe fitting 2 and the second pipe fitting 3. This makes the connection between the first pipe fitting 2 and the second pipe fitting 3 more stable, permanently maintaining the sealing effect of the pipe fitting connection.

[0048] Example 2:

[0049] As an optimization of the above embodiment, the pipe fitting socket 1 has a bevel on the side close to the second pipe fitting 3, and the maximum inner diameter of the bevel is the port of the pipe fitting socket 1. The cross-sectional shape of the sealing ring 4 matches the bevel of the pipe fitting socket 1, and the sealing ring 4 is embedded in the bevel. Figures 3 to 4As shown, the pipe cap ring 6 has a groove 7 inside. The bottom of the groove 7 forms a toothed connection with the tightening ring 5, and the groove wall of the groove 7 forms a detachable connection with the side of the pipe fitting socket 1 opposite to the second pipe fitting 3. By embedding the sealing ring 4 into the bevel of the pipe fitting socket 1, applying pressure to the tightening ring 5 through the pipe cap ring 6, and then squeezing the sealing ring 4 into the bevel of the pipe fitting socket 1 through the tightening ring 5, a better sealing fit can be formed between the sealing ring 4, the pipe fitting socket 1, and the second pipe fitting 3, thereby improving the sealing performance.

[0050] The bottom of the slot 7 is provided with toothed grooves 8, such as Figure 5 As shown, the end of the tightening ring 5 that connects to the pipe cap ring 6 is provided with a retaining tooth 9, which forms a toothed connection with the toothed groove 8. During water supply, drainage, and other fluid transportation processes, the pipeline system experiences vibration due to the scouring of the pipe wall by the fluid and the water hammer effect generated by the fluid itself. Prolonged vibration can easily cause the pipe cap ring 6 to loosen, resulting in insufficient compression of the sealing ring during operation, poor sealing performance, and fluid leakage. In this embodiment, the interlocking of the retaining tooth 9 on the tightening ring 5 and the toothed groove 8 on the pipe cap ring 6 effectively improves the connection stability between the tightening ring 5 and the pipe cap ring 6, preventing the pipe cap ring 6 from loosening.

[0051] The locking tooth 9 is a trapezoidal tooth, and the shape of the tooth groove 8 is adapted to the locking tooth 9. By setting the trapezoidal locking tooth 9, the biting stability between the locking tooth 9 and the tooth groove 8 can be improved. The trapezoidal tooth can be a right trapezoid, an isosceles trapezoid, etc. In specific implementation, other shapes of locking teeth 9 and tooth groove 8, such as triangles, can be set according to the actual situation.

[0052] The groove 7 has an internal thread on its groove wall, and the pipe fitting socket 1 has an external thread on the side opposite to the second pipe fitting 3. The pipe cap ring 6 forms a threaded connection with the pipe fitting socket 1. The threaded connection between the pipe cap ring 6 and the pipe fitting socket 1 facilitates the connection and installation of the pipe fitting, forms a fixed preload, and makes the locking teeth 9 mesh with the tooth groove 8.

[0053] Example 3:

[0054] As an optimization of the above embodiments, such as Figure 6 As shown, the sealing ring 4 has a compression groove 10 at one end near the bottom of the slot 7, and the tightening ring 5 is placed in the compression groove 10. By placing the tightening ring 5 in the compression groove 10 and applying pressure to the tightening ring 5 through the cap ring 6, the sealing ring 4 can be deformed by compression and extended to the side to achieve a better sealing effect.

[0055] The sealing ring 4 has an extended section on the side close to the second pipe fitting 3. The extended section is pressed between the tightening ring 5 and the second pipe fitting 3. By pressing the extended section of the sealing ring 4, the extended section is tightly pressed and adhered to the second pipe fitting 3, increasing the sealing area and improving the sealing effect.

[0056] The end face of the tightening ring 5 that contacts the sealing ring 4 is provided with compression protrusions 11. The compression protrusions 11 compress the sealing ring 4, deforming it and maintaining a corresponding amount of compression to increase the sealing effect of the sealing ring 4. At the same time, the compression protrusions 11 are pressed inside the sealing ring 4 to prevent the tightening ring 5 and the cap ring 6 from rotating and loosening due to vibration, which would cause unstable connection, insufficient compression of the sealing ring, and liquid leakage.

[0057] The end face of the tightening ring 5 that contacts the sealing ring 4 is arc-shaped. This arc shape allows for more even pressure distribution, preventing gaps in the sealing and thus enhancing the sealing effect.

[0058] Example 4:

[0059] As an optimization of the above embodiment, the sealing ring 4 is a rubber ring. Rubber rings have good ductility, and using them as the sealing ring 4 can improve the sealing effect. The pipe cap ring 6 is made of plastic. Plastic pipe cap rings 6 are inexpensive and readily available, and are suitable for most plastic pipes.

[0060] The first pipe fitting 2 is not limited to tees and elbows, but includes all pipe fittings with sockets, and its material is not limited. The pipe cap ring 6 and the pipe fitting socket 1 are not limited to threaded connections, but can be other connection methods. The pipe cap ring 6 is not limited, and refers to all products that use or extend this structure. It can also be a pipe cap, used for various inspection ports such as riser inspection ports, sinkhole inspection ports, and elbow inspection ports in piping systems.

[0061] This invention is not limited to the optional embodiments described above, and anyone can derive other various forms of products based on the inspiration of this invention. The specific embodiments described above should not be construed as limiting the scope of protection of this invention; the scope of protection of this invention should be determined by the claims, and the specification can be used to interpret the claims.

Claims

1. A non-loosening sealing connection structure for a union fitting, characterized in that: The device includes a pipe fitting socket (1) and a sealing connection assembly. The pipe fitting socket (1) is disposed on a first pipe fitting (2), and the sealing connection assembly is sleeved on a second pipe fitting (3). The pipe fitting socket (1) is used to insert into the second pipe fitting (3). The sealing connection assembly includes a sealing ring (4), a tightening ring (5), and a pipe cap ring (6). The sealing ring (4) is used to seal and fit with the pipe fitting socket (1). The pipe cap ring (6) forms a detachable connection with the pipe fitting socket (1). The tightening ring (5) is engaged between the sealing ring (4) and the pipe cap ring (6), with one end abutting against the sealing ring (4) and the other end forming a toothed connection with the pipe cap ring (6). The side of the pipe fitting socket (1) close to the second pipe fitting (3) has a bevel, and the maximum inner diameter of the bevel is the port of the pipe fitting socket (1). The sealing ring (4) The cross-sectional shape matches the bevel of the pipe fitting socket (1). The sealing ring (4) is embedded in the bevel. The pipe cap ring (6) is provided with a groove (7). The bottom of the groove (7) forms a toothed connection with the tightening ring (5). The groove wall of the groove (7) forms a detachable connection with the side of the pipe fitting socket (1) away from the second pipe fitting (3). The sealing ring (4) is provided with a compression groove (10) at one end close to the bottom of the groove (7). The tightening ring (5) is placed in the compression groove (10). The sealing ring (4) is provided with an extension section on the side close to the second pipe fitting (3). The extension section is squeezed between the tightening ring (5) and the second pipe fitting (3). The end face of the tightening ring (5) that contacts the sealing ring (4) is provided with compression protrusions (11). The end face of the tightening ring (5) that contacts the sealing ring (4) is arc-shaped.

2. The anti-loosening sealing connection structure for a flexible pipe fitting according to claim 1, characterized in that: The bottom of the slot (7) is provided with a toothed groove (8), and the end of the tightening ring (5) connected to the cap ring (6) is provided with a tooth (9), and the tooth (9) and the toothed groove (8) form a toothed connection.

3. The anti-loosening sealing connection structure for a connecting pipe fitting according to claim 2, characterized in that: The locking teeth (9) are trapezoidal teeth, and the shape of the tooth groove (8) is adapted to the locking teeth (9).

4. The anti-loosening sealing connection structure for a connecting pipe fitting according to claim 1, characterized in that: The groove (7) has an internal thread on its groove wall and an external thread on the side of the pipe fitting socket (1) away from the second pipe fitting (3). The pipe cap ring (6) forms a threaded connection with the pipe fitting socket (1).

5. The anti-loosening sealing connection structure for a connecting pipe fitting according to claim 1, characterized in that: The sealing ring (4) is a rubber ring.

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