Connecting structure, pipe joint and pipeline

Abstract

The utility model relates to the technical field of pipeline connection, in particular to a connecting structure, a pipe joint and a pipeline, the connecting structure comprises a hollow main body and a locking nut, the end portion of the main body is provided with a first groove used for being connected with the pipeline in an inserted mode, and the locking nut is arranged on the outer side of the end portion of the main body in a sleeved mode and connected with the end portion of the main body in a threaded mode. A main body of the pipe joint is at least provided with two end parts, each end part is provided with a connecting structure, the pipeline comprises the pipe joint and a pipeline, and the pipeline is inserted into the first groove and is inserted into the main body. The external pipeline is detachably connected with the main body, and an operator tightens the locking nut to ensure that the main body is tightly connected with the external pipeline. The utility model does not need to use glue for bonding, can be assembled and disassembled as required, does not need to damage the pipeline, and has long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection, and more specifically, to a connection structure, a pipe joint and a pipeline. Background Art

[0002] At present, with the acceleration of the urbanization process and the advancement of infrastructure construction, plastic pipes and their supporting pipe fittings have gradually become ideal substitutes for traditional metal pipes due to their excellent performance and cost-effectiveness. The market demand for plastic pipes and pipe fittings will continue to show a growth trend. Most of the existing plastic pipe fittings use glue bonding. On the one hand, the glue material used is toxic, and it is easy to produce irritating toxic odors after volatilization, which affects physical health. On the other hand, the pipe fittings bonded with glue need to wait for a long time for the glue to solidify, and the operation period is relatively long. The bonded pipe fittings and pipes are permanently damaged and cannot be disassembled, so they cannot be recycled.

[0003] Chinese Patent CN204729827U discloses a connection structure between a plastic pipe fitting and a plastic pipe. The contact surfaces of the plastic pipe fitting and the plastic pipe are adhesively matched, and a hoop is externally press-fitted on the plastic pipe fitting and the plastic pipe. The hoop is composed of a rubber seal and a clamping device. The rubber seal is arranged at the joint of the plastic pipe fitting and the plastic pipe, and the clamping device is composed of two semi-circular fasteners. The two semi-circular fasteners are enclosed into a closed circular structure by the cooperation of screws and nuts; the cross-section of the semi-circular fastener is a groove structure, and the two side edges of the groove are respectively press-fitted on the outer walls of the plastic pipe fitting and the plastic pipe. The comparative document uses glue and a hoop to achieve the sealing effect of pipeline connection. Using glue bonding still cannot avoid problems such as the volatilization of toxic gases, a long operation period, and inability to disassemble after bonding. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art that the plastic pipe fittings use glue bonding, resulting in the volatilization of toxic gases, a long operation period, and inability to disassemble after bonding, and to provide a connection structure, a pipe joint and a pipeline, in which glue is not required for bonding between pipelines, and they can be loaded and unloaded as needed, and have a long service life.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] Provide a connection structure, including a hollow main body and a locking nut. A first groove for inserting a pipeline is arranged at the end of the main body, and the locking nut is sleeved outside the end of the main body and is threadedly connected with it.

[0007] A first groove is arranged at the end of the main body of the utility model. The external pipeline is inserted into the first groove to be connected with the main body. The locking nut is sleeved outside the end of the main body. The operator tightens the locking nut to ensure the tight connection between the main body and the external pipeline, and it can be loaded and unloaded as needed.

[0008] Further, a second groove is provided at the end of the locking nut, the main body is inserted into the second groove, the inner side of the locking nut is inserted into the first groove, a first thread is provided on the inner wall of the second groove, a second thread is provided at the end of the main body, and the locking nut is threadedly connected to the main body through the first thread and the second thread.

[0009] Further, the end of the locking nut inserted into the first groove is a wedge-shaped structure.

[0010] Further, a plurality of annular locking teeth are provided on the inner side of the locking nut.

[0011] Further, a plurality of reinforcing ribs are evenly provided on the outer side of the locking nut along the circumferential direction.

[0012] Further, a sealing ring is further included, and the sealing ring is installed in the first groove.

[0013] Further, a third groove for inserting and connecting with the pipeline is provided at the end of the sealing ring.

[0014] Further, a wrench position is provided on the outer side of the main body.

[0015] The present utility model further provides a pipe joint, the main body is provided with at least two ends, and each end is provided with a connecting structure.

[0016] The present utility model is provided with at least two ends, and the connecting structure has strong versatility and can be applied to straight pipe fittings, tee pipe fittings, elbow pipe fittings, etc.

[0017] The present utility model further provides a pipeline, including a pipe joint and a pipeline, and the pipeline is inserted into the first groove to be inserted and connected with the main body.

[0018] The present utility model is connected to the pipeline through the connecting structure, has good sealing performance, and can be loaded and unloaded as required without damaging the pipeline.

[0019] Compared with the prior art, the beneficial effects of the present utility model are:

[0020] 1. First grooves are provided at the ends of the main body of the present utility model. The external pipeline is inserted into the first groove to be connected with the main body. The locking nut is installed on the outer side of the end of the main body. Tightening the locking nut ensures a tight connection between the main body and the external pipeline, and has good sealing performance.

[0021] 2. The end of the locking nut inserted into the first groove of the present utility model is a wedge-shaped structure, and a plurality of annular locking teeth are provided on the inner side of the locking nut. As the locking nut is continuously tightened, the fastening effect is stronger and the sealing performance is better.

[0022] 3. The sealing ring of the present utility model is provided with a third groove, and the sealing effect is better after installation. Brief Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of a connection structure inserted into a pipeline;

[0024] Figure 2 It is Figure 1 A - A sectional view of

[0025] Figure 3 It is Figure 2 An enlarged view of part B of

[0026] Figure 4 A schematic structural diagram of the main body;

[0027] Figure 5 A schematic structural diagram of the locking nut;

[0028] Figure 6 A schematic structural diagram of the sealing ring;

[0029] Figure 7 It is a schematic structural diagram of a pipe joint inserted into a pipeline;

[0030] Figure 8 It is a schematic structural diagram of a pipe joint with a tee as the main body.

[0031] In the drawings: 1. Main body; 11. First groove; 12. Second thread; 13. Fourth groove; 14. Wrench position; 2. Locking nut; 21. Second groove; 22. First thread; 23. First reinforcing rib; 24. Locking teeth; 3. Sealing ring; 31. Third groove; 32. Second reinforcing rib; 5. Pipeline. Detailed Embodiments

[0032] The following further describes the present utility model in conjunction with the detailed embodiments. Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, rather than physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present utility model, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well - known structures and their descriptions in the drawings may be omitted.

[0033] In the attached drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the attached drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the attached drawings are only for illustrative purposes and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] Embodiment 1

[0035] As Figures 1 to 6 Shown is the first embodiment of a connection structure of the present utility model. The present utility model includes a hollow main body 1 and a locking nut 2. A first groove 11 for inserting and connecting with a pipe 5 is provided at the end of the main body 1. The locking nut 2 is sleeved outside the end of the main body 1 and is threadedly connected thereto. The ends of the main body 1 of the present utility model are both provided with the first groove 11. The external pipe 5 is inserted into the first groove 11 to be connected with the main body 1. The end of the external pipe 5 is tightly combined with the first groove 11. The locking nut 2 is sleeved outside the end of the main body 1. Tightening the locking nut 2 ensures a tight connection between the main body 1 and the external pipe 5, which can form a good seal and effectively prevent leakage; and this connection method does not require complex installation tools or professional techniques. Operators can operate after simple training, which not only saves installation time and labor costs, but also avoids the impact of non-standard construction on the use effect and service life of pipe fittings; the connection method is simple. When the pipe 5 needs to be repaired and replaced, only the locking nut 2 needs to be loosened to achieve arbitrary replacement and rotation, without damaging the surrounding wall, reducing the repair time and repair costs; in summary, due to the simple installation, saving labor and time, it has good economic benefits. The cross-sectional area of the end of the main body 1 of the present utility model is larger than the cross-sectional area in the middle.

[0036] The utility model lock nut 2 is provided with a second groove 21 at the end, the main body 1 is inserted into the second groove 21, the inner side of the lock nut 2 is inserted into the first groove 11, the inner wall of the second groove 21 is provided with a first thread 22, and the end of the main body 1 is provided with a second thread 12. The lock nut 2 is threadedly connected to the second thread 12 via the first thread 22. The second groove 21 is designed to serve as a guide during installation, making it easier for the operator to align and install. The lock nut 2 is tightened continuously until the main body 1 and the inner side of the second groove 21 are abutted. This design makes the lock nut 2 less likely to loosen when subjected to lateral force, thereby improving the stability of the connection between the utility model and the pipe 5. The threaded connection is simple and fast, and can quickly complete the connection and disconnection of the pipe 5, improving construction efficiency. The threaded connection can effectively prevent fluid leakage when used in conjunction with sealing elements such as sealing gaskets, raw tape, and sealant. In this embodiment, the first thread 22 is configured as an internal thread and the second thread 12 is configured as an external thread. This configuration allows the lock nut 2 to be detachably connected to the main body 1, but is not limited to this. The first thread 22 can be configured as an external thread and the second thread 12 can be configured as an internal thread.

[0037] The end of the locking nut 2 of the present invention that is inserted into the first groove 11 is a wedge-shaped structure, and the inner ring of the locking nut 2 that contacts the pipe 5 is provided with a plurality of annular locking teeth 24, which abut against the pipe 5. The locking teeth 24 are a triangular structure, and the end that contacts the pipe 5 is a pointed end. Only the tip of the locking teeth 24 contacts the pipe 5, and the tip of the locking teeth 24 is inclined at a certain angle toward the end of the locking nut 2 away from the main body 1. This arrangement makes it possible to reduce the resistance when the main body 1 and the locking nut 2 are disassembled and pulled out together. As the locking nut 2 is continuously tightened, the contact area between the locking teeth 24 and the pipe 5 increases, and the card is tighter. During disassembly, as the locking nut 2 is loosened, the contact area between the locking teeth 24 and the pipe 5 decreases.

[0038] The locking nut 2 of the present invention is provided with a plurality of first reinforcing ribs 23 evenly distributed along the circumference of the outer side. The first reinforcing ribs 23 can improve the structural stability of the locking nut 2, making it less likely to deform when subjected to high pressure or torque, thereby ensuring a secure connection. The first reinforcing ribs 23 can more effectively distribute the stress on the nut, reducing stress concentration and avoiding damage caused by local overload. The first reinforcing ribs 23 can also serve as auxiliary grips during installation and removal, making the locking nut 2 easier to grip with tools. The number of first reinforcing ribs 23 in this embodiment is set to six, but is not limited to six and can be selected as needed.

[0039] The utility model further includes a sealing ring 3. The sealing ring 3 is installed in the first groove 11, with its inner side abutted against the pipeline 5, its outer side abutted against the main body 1, and the other end abutted against the inner wall of the main body 1. The cross-sectional area of the end of the sealing ring 3 of the utility model that abuts against the locking nut 2 is smaller than that of the other end, and both the outer side and the end of the sealing ring 3 are in close contact with the main body 1. The sealing ring 3 has good elasticity, can closely fit the pipe wall, effectively prevent fluid leakage, ensure the safe operation of the pipeline 5 system, and the good sealing performance helps to prevent leakage, thereby avoiding possible safety accidents and environmental pollution; the sealing ring 3 has a simple structure, is easy to install and replace, does not require complex tools and professional techniques, and reduces the maintenance cost and time; the sealing ring 3 can be customized according to different pipeline 5 materials and sizes to adapt to specific installation requirements. The sealing ring 3 in this embodiment is made of a rubber material that is resistant to high temperature and high pressure, is not easy to deform or age, and is suitable for sealing in harsh environments. The high-quality sealing ring 3 material and design can ensure the sealing reliability of the pipeline 5 connection during long-term operation, and reduce the maintenance frequency and cost.

[0040] On the side of the inner wall of the first groove 11 of the main body 1 of the utility model, several fourth grooves 13 are provided. On the outer wall of the sealing ring 3, several second reinforcing ribs 32 are provided. The fourth grooves 13 are clamped with the second reinforcing ribs 32, and the positions and numbers of the fourth grooves 13 match those of the second reinforcing ribs 32 to prevent the sealing ring 3 from shifting.

[0041] Several wrench positions 14 are provided on the outer side of the main body 1 of the utility model. In this embodiment, the number of wrench positions 14 is selected as one. The outer diameter of the end of the main body 1 in this embodiment is larger than the outer diameter of the middle part of the main body 1. This structure enables the jaws of the wrench to be aligned from the middle part of the main body 1 and then the locking nut 2 to be loaded and unloaded. The setting of the wrench positions 14 provides convenience for operation.

[0042] The working principle of a connection structure in this embodiment is as follows: A first groove 11 is provided at the end of the main body 1. A sealing ring 3 is installed in the first groove 11. The pipeline 5 is inserted into the first groove 11. The inner side of the sealing ring 3 abuts against the pipeline 5 and the outer side abuts against the main body 1. The pipeline 5 abuts against the inner wall of the first groove 11. And the locking nut 2 is provided with a second groove 21. The main body 1 is inserted into the second groove 21 and abuts against the locking nut 2. A second thread 12 is provided outside the end of the main body 1. A first thread 22 is provided inside the locking nut 2. The locking nut 2 is sleeved on the end of the main body 1 and is threadedly connected to the main body 1. The end of the locking nut 2 inserted into the first groove 11 is a wedge-shaped structure. And a plurality of annular locking teeth 24 are provided inside the locking nut 2. During the process of continuously tightening the locking nut 2, the contact between the locking teeth 24 and the pipeline 5 becomes closer. The end of the main body 1 deforms, and the connection between the main body 1 and the pipeline 5 becomes tighter and more firm. The settings of the first groove 11, the locking nut 2 and the sealing ring 3 ensure that the utility model is not prone to connection loosening and leakage. When disassembly is required, first loosen the locking nut 2 and then pull out the main body 1. The main body 1 of this embodiment takes a straight-through as an example, but this connection structure can be applied to straight-throughs, tees, and any pipe fittings with socket designs.

[0043] Embodiment Two

[0044] As Figures 7 to 8 shown, this embodiment is the first embodiment of a pipe joint. This embodiment is similar to Embodiment One. The difference is that the main body 1 of this embodiment has at least two ends, and each end is provided with a connection structure. The main body 1 is connected to the pipeline 5 through the connection structure at the end. The utility model can set different numbers and positions of ends according to the requirements for connection, control, or changing the fluid direction in the pipeline 5 system, making the pipeline 5 system more diversified and efficient.

[0045] Embodiment Three

[0046] This embodiment is the first embodiment of a pipeline. This embodiment is similar to Embodiment One. The difference is that this embodiment further includes a pipeline 5. The pipeline 5 is inserted into the first groove 11 and is inserted and connected to the main body 1, that is, the pipelines 5 are connected to each other through a pipe joint. The pipe joint makes the installation, disassembly, and maintenance of the pipeline 5 easier. When it is necessary to replace the pipeline 5 or equipment, the pipeline 5 can be easily disconnected and reconnected. The pipe joint provides flexibility in the direction and layout of the pipeline 5.

[0047] At the end of the sealing ring 3 of the present utility model, there is a third groove 31 for inserting and connecting with the pipeline 5. When the pipeline 5 is inserted into the third groove 31 and abuts against the sealing ring 3, the sealing ring 3 can better cover the end of the pipeline 5. Moreover, the design of the third groove 31 during installation can serve as a guide, making it easier for the operator to align and correctly install the sealing ring 3. The first groove 11 of the main body 1 abuts against the sealing ring 3 to perform reverse covering on the sealing ring 3, strengthening the sealing effect, ensuring no leakage under pressure, and improving the reliability of the entire system. In addition, when the locking nut 2 is unscrewed, the pipeline 5 can be pulled out together with the sealing ring 3 from the main body 1. The end of the sealing ring 3 abuts against the end of the wedge-shaped structure of the locking nut 2. As the locking nut 5 is continuously tightened, the end of the sealing ring 3 is squeezed, showing an interference fit, making the connection between the sealing ring 3 and the main body 1 closer and the sealing performance better.

[0048] The sealing ring 3 of the present utility model is made of rubber material. The rubber material has good elasticity and plasticity, can form a good seal on the contact surface, and effectively prevent the leakage of media such as liquids, gases, and dust. The rubber material is easy to process and form, and can be quickly manufactured and formed through processes such as molding and injection molding, improving production efficiency. The fact that the sealing ring 3 of the present utility model is made of rubber material does not mean that only rubber material can be used. Fluororubber (FKM), silicone rubber (VMQ), polyurethane (PU), ethylene propylene rubber (EPDM), etc. that are suitable for sealing applications in harsh environments such as high temperature and high pressure, corrosive media, etc. can also be used. Comprehensive consideration should be given according to the specific working environment, medium requirements, and performance needs to ensure the best sealing effect and service life.

[0049] The working principle of a pipeline in this embodiment is as follows: During installation, the sealing ring 3 is sleeved on the end of the pipeline 5 so that the third groove 31 abuts against the end. The second reinforcing rib 32 outside the sealing ring 3 is aligned and snapped with the fourth groove 13 provided on the inner wall side of the first groove 11 of the main body 1. The main body 1 covers the sealing ring 3, and the locking nut 2 is tightened. The sealing ring 3 abuts against the locking nut 2. As the locking nut 2 is continuously tightened, the sealing ring 3 is squeezed, and the connection between the sealing ring 3 and the main body 1 becomes closer.

[0050] Compared with the method of bonding with glue, the cost of the present utility model may be higher, but the comprehensive benefit of the installation of the entire pipe network is higher than that of the traditional connection method.

[0051] In the specific content of the above specific implementation manner, each technical feature can be combined arbitrarily without contradiction. For the sake of concise description, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features does not exist in contradiction, it should be considered as within the scope recorded in this specification.

[0052] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A connection structure, characterized in that, It includes a hollow body (1) and a locking nut (2). A first groove (11) for inserting into a pipe (5) is provided at the end of the body (1). The locking nut (2) is sleeved outside the end of the body (1) and is threadedly connected thereto.

2. The connection structure according to claim 1, wherein A second groove (21) is provided at the end of the locking nut (2). The body (1) is inserted into the second groove (21), and the inner side of the locking nut (2) is inserted into the first groove (11). A first thread (22) is provided on the inner wall of the second groove (21), and a second thread (12) is provided at the end of the body (1). The locking nut (2) is threadedly connected to the second thread (12) through the first thread (22).

3. The connection structure according to claim 2, characterized in that, The end of the locking nut (2) inserted into the first groove (11) is a wedge-shaped structure.

4. The connection structure according to claim 2, characterized in that, A number of annular locking teeth (24) are provided on the inner side of the locking nut (2).

5. The connection structure according to claim 1, wherein, A number of reinforcing ribs are evenly provided along the circumference on the outer side of the locking nut (2).

6. The connection structure according to claim 1, wherein It further includes a sealing ring (3), and the sealing ring (3) is installed in the first groove (11).

7. The pipeline according to claim 6, wherein A third groove for inserting into the pipe (5) is provided at the end of the sealing ring (3).

8. The connection structure according to claim 1, wherein A wrench position (14) is provided on the outer side of the body (1).

9. A pipe joint, characterized in that, The body (1) has at least two ends, and each end is provided with the connection structure according to any one of claims 1 to 8.

10. A pipeline, characterized in that, It includes the pipe joint according to claim 9, and further includes a pipe (5). The pipe (5) is inserted into the first groove (11) to be inserted and connected with the body (1).

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