Connecting joint and pipeline system
By designing the coordination of the body, sealing ring, compression gasket and locking nut of the connecting joint, the problems of high torque, difficulty in installation and poor sealing of the quick joint during installation are solved, and high sealing and high pressure bearing capacity are achieved, reducing leakage risk.
Patent Information
- Application Number
- CN202422520094.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-17
AI Technical Summary
When installing the existing quick joints, the nut locking torque is high, the installation is difficult, the pressure bearing capacity is low, and the sealing is poor, which is prone to leakage.
The connection joint design is adopted, including the body, sealing ring, compression washer and locking nut. Through the cooperation of the locking nut and compression washer, the compression washer is squeezed and pressed along the axial direction of the body, thereby deformation of the sealing ring to seal the pipe and improving sealing ability using the limit of the barrier surface.
It alleviates the problems of high torque and difficulty in installation of nut locking, improves pressure bearing capacity and sealing, and reduces leakage risk.
Smart Images
Figure CN223165265U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline connection, and more specifically, to a connecting joint and a pipeline system. Background Technique
[0002] Nowadays, PVC-U pipes are widely used in the field of building water supply and drainage. There are various connection methods for pipeline systems, such as adhesive connection, threaded connection, flange connection, union connection, quick connection, etc. To facilitate installation construction and later disassembly and maintenance, the use of quick-connect pipe fittings in pipeline systems is an essential component.
[0003] Currently, the existing quick connectors have defects such as large nut locking torque, difficult installation, low pressure-bearing capacity, poor sealing performance, and easy leakage during installation.
[0004] In view of this, the present utility model is specifically proposed. Content of the Utility Model
[0005] The purpose of the present utility model is to provide a connecting joint and a pipeline system to solve or improve the above technical problems.
[0006] The present utility model can be implemented as follows:
[0007] In a first aspect, the present utility model provides a connecting joint, including a body, a sealing ring, a pressing washer, and a locking nut;
[0008] The body includes an intermediate body and an installation body provided at one end of the intermediate body. The inner diameter of the installation body is larger than that of the intermediate body to form a resisting surface at the connection;
[0009] The sealing ring is arranged in the installation body and is limited by the resisting surface;
[0010] The pressing washer is arranged in the installation body and is located outside the sealing ring;
[0011] The locking nut is in threaded cooperation with the installation body. The locking nut is used to axially press the pressing washer along the body, so that the sealing ring is compressed by the pressing washer to deform and seal the pipe in the installation body.
[0012] In an optional embodiment, installation bodies are formed at both ends of the intermediate body.
[0013] In an optional embodiment, a plurality of first convex ribs are provided on the outer surface of the intermediate body.
[0014] In an optional embodiment, the cross-section of the resisting surface is an inclined plane.
[0015] In an optional embodiment, the cross-section of the sealing ring is provided with a V-shaped groove, so as to bulge inward during the extrusion process to seal the pipe.
[0016] In an alternative embodiment, the compression washer is provided with an opening.
[0017] In an alternative embodiment, the lock nut includes a threaded portion, a bent portion, and an extrusion portion connected in sequence. The threaded portion and the extrusion portion extend toward one side of the bent portion, so that the cross-section of the lock nut is U-shaped; the threaded portion is in threaded cooperation with the mounting body, the bent portion is used to limit the outer end face of the mounting body, and the extrusion portion is used to extrude the compression washer.
[0018] In an alternative embodiment, a plurality of second ridges are provided on the outer surface of the threaded portion.
[0019] In an alternative embodiment, the materials of the body, the compression washer, and the lock nut are rigid polyvinyl chloride, and the material of the sealing ring is rubber.
[0020] In a second aspect, the present utility model provides a pipeline system, which includes a pipe and the connection joint according to any one of the foregoing embodiments, and the pipe is assembled into the mounting body.
[0021] The beneficial effects of the present utility model include:
[0022] The connection joint provided by the present utility model includes a body, a sealing ring, a compression washer, and a lock nut. The body includes an intermediate body and a mounting body provided at one end of the intermediate body. The inner diameter of the mounting body is greater than the inner diameter of the intermediate body to form a resisting surface at the joint. The sealing ring is disposed in the mounting body and limited by the resisting surface. The compression washer is disposed in the mounting body and located outside the sealing ring. The lock nut is in threaded cooperation with the mounting body, and the lock nut is used to axially extrude the compression washer along the body, so that the sealing ring is extruded by the compression washer to deform and seal the pipe located in the mounting body.
[0023] By the cooperation of the lock nut and the compression washer, and the way of extruding the sealing ring, the problems of large locking torque of the nut and difficult installation can be alleviated. At the same time, by the extrusion of the compression washer on the sealing ring, the sealing of the sealing ring to the pipe can be realized, the pressure-bearing capacity can be improved, and the sealing performance can be improved by the way of axial extrusion and the limitation of the resisting surface, and finally the risk of leakage can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.
[0025] Figure 1 It is a schematic structural diagram of the connection joint provided by the embodiment of the present application from the first perspective;
[0026] Figure 2 It is a schematic structural diagram of the connection joint provided by the embodiment of the present application from the second perspective;
[0027] Figure 3 It is Figure 2 a schematic diagram of the state before the locking nut at position I in [] is tightened;
[0028] Figure 4 It is Figure 2 a schematic diagram of the state after the locking nut at position I in [] is tightened.
[0029] Icon: 1000 - pipeline system; 100 - connection joint; 10 - body; 11 - intermediate body; 111 - first convex rib; 12 - installation body; 13 - resisting surface; 20 - sealing ring; 21 - V-shaped groove; 30 - pressing washer; 31 - opening; 40 - locking nut; 41 - internal thread part; 411 - second convex rib; 42 - bending part; 43 - extrusion part; 200 - pipe material. Detailed implementation manners
[0030] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.
[0031] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the protection scope of the present utility model.
[0032] It should be noted that: similar reference numerals and letters denote similar items in the following accompanying drawings. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings.
[0033] In the description of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, if terms such as "first", "second", "third", etc. are used only for distinguishing descriptions, they should not be understood as indicating or implying relative importance.
[0034] In addition, if terms such as "horizontal" and "vertical" are used, it does not mean that the components are required to be absolutely horizontal or hanging vertically, but they can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly inclined.
[0035] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0036] Embodiment
[0037] Please refer to Figures 1 to 4 , this embodiment provides a pipeline system 1000, which can alleviate the defects such as large nut locking torque, difficult installation, low pressure-bearing capacity, poor sealing performance and easy leakage mentioned in the background technology.
[0038] Please refer to Figure 1 , which shows an exploded view of the pipeline system 1000. The pipeline system 1000 includes a pipe 200 and a connection joint 100, and the pipe 200 is assembled into the installation body 12 of the connection joint 100.
[0039] The number of the pipes 200 is two, which are respectively assembled to both ends of the connection joint 100. Through the connection joint 100, the assembly of the two pipes 200 can be quickly realized, and at the same time, the connection sealing performance can be ensured.
[0040] Combined with Figures 2 to 4 again, the connection joint 100 includes a body 10, a sealing ring 20, a pressing washer 30 and a locking nut 40.
[0041] In this embodiment, the materials of the body 10, the compression washer 30, and the lock nut 40 can be, by way of example but not limitation, unplasticized polyvinyl chloride (PVC-U). In addition, according to actual needs, other rigid materials can also be used.
[0042] In this embodiment, the material of the sealing ring 20 can be, by way of example but not limitation, rubber. In addition, according to actual needs, silica gel or other soft materials can also be used.
[0043] The body 10 includes an intermediate body 11 and a mounting body 12 provided at one end of the intermediate body 11. The inner diameter of the mounting body 12 is larger than the inner diameter of the intermediate body 11 to form a resisting surface 13 at the joint.
[0044] In this embodiment, mounting bodies 12 are formed at both ends of the intermediate body 11. Thus, two pipes 200 can be assembled simultaneously. In other embodiments, when the intermediate body 11 is in a V shape, the number of mounting bodies 12 can also be three.
[0045] The sealing ring 20 is disposed within the mounting body 12 and is limited by the resisting surface 13.
[0046] The axial position of the sealing ring 20 can be limited by the resisting surface 13, and this axial direction can be understood as Figure 1 and Figure 2 the direction of the dashed line in
[0047] In this embodiment, the cross-section of the resisting surface 13 is an inclined surface to facilitate the installation of the sealing ring 20. In addition, it is not excluded that in other embodiments, the cross-section of the resisting surface 13 is a radial plane. It should be noted that the resisting surface 13 can also be understood as: a receiving interface is formed inside the port of the body 10, and the sealing ring 20 and the compression washer 30 are placed inside the receiving interface, so that the sealing ring 20 is fixed inside the receiving interface and does not move axially.
[0048] The compression washer 30 is disposed within the mounting body 12 and is located outside the sealing ring 20.
[0049] By providing the compression washer 30, which is located within the mounting body 12 between the lock nut 40 and the sealing ring 20, the compression force of the lock nut 40 on the sealing ring 20 is transmitted, reducing the torque when the lock nut 40 is tightened.
[0050] The lock nut 40 is in threaded engagement with the mounting body 12. The lock nut 40 is used to axially compress the compression washer 30 along the body 10, so that the sealing ring 20 is compressed by the compression washer 30 to deform and seal the pipe 200 located within the mounting body 12.
[0051] Optionally, a smooth plane is provided inside the lock nut 40 to contact the compression washer 30, reducing the frictional resistance when the lock nut 40 rotates.
[0052] In order to facilitate clamping during installation to avoid loosening and slipping, in this embodiment, a plurality of first ridges 111 are provided on the outer surface of the intermediate body 11.
[0053] Exemplarily, the plurality of first ridges 111 may be evenly distributed along the circumferential direction of the intermediate body 11, and each first ridge 111 extends along the axial direction of the intermediate body 11.
[0054] In this embodiment, the cross-section of the sealing ring 20 is provided with a V-shaped groove 21, so that it bulges inward during the extrusion process to seal the pipe 200.
[0055] In addition, during specific implementation, the cross-sectional shape of the sealing ring 20 is not limited to the V-shaped groove shape, and can also be rectangular, trapezoidal, etc.
[0056] When the locking nut 40 is tightened, the sealing ring 20 is deformed under pressure, and a sealing ring that bulges inward is formed at the position of the V-shaped groove 21, so as to form a sealing effect between the pipe 200 and the main body 10.
[0057] In this embodiment, the pressing washer 30 is provided with an opening 31.
[0058] The shape of the opening 31 is not limited to the shape shown in the figure, and any shape is acceptable. When the locking nut 40 is tightened, in the radial direction, the pressing washer 30 and the sealing ring 20 are scaled synchronously, making it more compatible with the sealing ring 20.
[0059] In this embodiment, the locking nut 40 includes an internal thread portion 41, a bending portion 42, and an extrusion portion 43 that are connected in sequence. The internal thread portion 41 and the extrusion portion 43 extend toward one side of the bending portion 42, so that the cross-section of the locking nut 40 is U-shaped; the internal thread portion 41 is in threaded cooperation with the mounting body 12, the bending portion 42 is used to limit the outer end face of the mounting body 12, and the extrusion portion 43 is used to extrude the pressing washer 30.
[0060] It can be understood that the internal thread portion 41 has an internal thread, and the mounting body 12 has an external thread. The two are screwed together to play a locking role. The pressure is transmitted through the pressing washer 30 to deform the sealing ring 20 to form a sealing ring, thereby producing a sealing effect.
[0061] Combined Figure 3 and Figure 4 , Figure 3 is Figure 2 a schematic diagram of the state before the locking nut 40 at position I in Figure 4 is Figure 2 a schematic diagram of the state after the locking nut 40 at position I in Figure 3 Based on Figure 3 and controlling the tightening of the locking nut 40 so that it moves in the direction indicated by the arrow inFigure 4 In the state where, at this time, the Figure 4 sealing ring 20 in it bulges inward to form a sealing ring.
[0062] In order to achieve the functions of anti-slip and anti-rotation, in this embodiment, a plurality of second convex ribs 411 can be provided on the outer surface of the internal thread portion 41.
[0063] Similarly, the plurality of second convex ribs 411 can also be evenly distributed along the circumferential direction around the locking nut 40, and each second convex rib 411 extends along the axial direction of the locking nut 40. In other words, a groove is formed between two adjacent second convex ribs 411, which is strip-shaped for easy operation. In addition, in other embodiments, the shape of the groove is not limited to the shape shown in the figure.
[0064] Continuing from the above, the working principle of the pipeline system 1000 provided in this embodiment includes:
[0065] Using the locking nut 40 to rotate and lock, the sealing ring 20 is compressed by the pressing washer 30. After the sealing ring 20 is compressed, the wall thickness of the V-shaped groove 21 in the middle bulges inward to form a raised sealing ring, and the sealing ring squeezes the outer wall of the pipe 200 to form a sealing effect.
[0066] A pressing washer 30 is provided between the locking nut 40 and the sealing ring 20, which can reduce the locking torque during the installation of the pipe fittings. In this embodiment, it is achieved by using the fact that the friction coefficient of the PVC-U material is lower than that of the rubber material. For example, the locking nut 40 and the pressing washer 30 are made of PVC-U material, and the sealing ring 20 is made of rubber material. The relative rotational frictional resistance between the locking nut 40 and the pressing washer 30 is smaller than that between the locking nut 40 and the sealing ring 20.
[0067] Secondly, the pressing washer 30 is provided with an opening 31. While the pressing washer 30 compresses the sealing ring 20, it tightens in the radial direction, making the sealing effect better. When connecting the pipe fittings, there is no need to use glue bonding, threaded connection, or flange connection. Just insert the pipe 200 into the installation body 12 and then tighten the locking nut 40.
[0068] Thirdly, when installing the pipe 200, there is no need to disassemble the locking nut 40, the pressing washer 30, and the sealing ring 20 and then insert the pipe 200 into the installation body 12. After loosening the locking nut 40, directly insert the pipe 200 into the installation body 12 and then tighten the locking nut 40.
[0069] The above pipeline system 1000 as a whole has the advantages of high pressure-bearing capacity, good sealing effect, small locking torque, and convenient installation.
[0070] In summary, the connecting joint 100 provided by the present utility model includes a body 10, a sealing ring 20, a pressing washer 30, and a locking nut 40. The body 10 includes an intermediate body 11 and a mounting body 12 provided at one end of the intermediate body 11. The inner diameter of the mounting body 12 is greater than the inner diameter of the intermediate body 11 to form a resisting surface 13 at the joint. The sealing ring 20 is disposed within the mounting body 12 and is limited by the resisting surface 13. The pressing washer 30 is disposed within the mounting body 12 and is located outside the sealing ring 20. The locking nut 40 is in threaded cooperation with the mounting body 12. The locking nut 40 is used to axially press the pressing washer 30 along the body 10, so that the sealing ring 20 is deformed by the pressing of the pressing washer 30 and seals the pipe 200 located within the mounting body 12. By the cooperation of the locking nut 40 and the pressing washer 30, and thus the way of pressing the sealing ring 20, the problems of large locking torque of the nut and difficult installation can be alleviated. At the same time, through the pressing of the sealing ring 20 by the pressing washer 30, the sealing of the sealing ring 20 to the pipe 200 can be realized, the pressure-bearing capacity can be improved, and the sealing performance can be improved by means of axial pressing and the limitation of the resisting surface 13, and finally the risk of leakage can be reduced. The pipeline system 1000 including the connecting joint 100 also has the above advantages.
[0071] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A connecting joint, characterized in that, It includes a body, a sealing ring, a pressing washer and a locking nut; The body includes an intermediate body and a mounting body provided at one end of the intermediate body. The inner diameter of the mounting body is larger than that of the intermediate body to form a resisting surface at the joint; The sealing ring is arranged in the mounting body and limited by the resisting surface; The pressing washer is arranged in the mounting body and located outside the sealing ring; The locking nut is in threaded cooperation with the mounting body. The locking nut is used to axially press the pressing washer along the body, so that the sealing ring is deformed by the pressing of the pressing washer and seals the pipe located in the mounting body.
2. The connecting joint according to claim 1, wherein The mounting bodies are formed at both ends of the intermediate body.
3. The connecting joint according to claim 1, characterized in that, A plurality of first ridges are provided on the outer surface of the intermediate body.
4. The connecting joint according to claim 1, characterized in that, The cross-section of the resisting surface is an inclined surface.
5. The connecting joint according to claim 1, characterized in that, The cross-section of the sealing ring is provided with a V-shaped groove, so as to bulge inward during the extrusion process to seal the pipe.
6. The connecting joint according to claim 1, characterized in that, The pressing washer is provided with an opening.
7. The connecting joint according to any one of claims 1 to 6, characterized in that The locking nut includes an internal thread portion, a bending portion and an extrusion portion connected in sequence. The internal thread portion and the extrusion portion extend toward one side of the bending portion, so that the cross-section of the locking nut is U-shaped; the internal thread portion is in threaded cooperation with the mounting body, the bending portion is used to limit the outer end face of the mounting body, and the extrusion portion is used to press the pressing washer.
8. The connecting joint according to claim 7, characterized in that, A plurality of second ridges are provided on the outer surface of the internal thread portion.
9. The connecting joint according to any one of claims 1 to 6, characterized in that, The materials of the body, the pressing washer and the locking nut are rigid polyvinyl chloride, and the material of the sealing ring is rubber.
10. A pipeline system, characterized in that, It includes a pipe and the connecting joint according to any one of claims 1 to 9, and the pipe is assembled into the mounting body.