An adjustable interface coaxiality seal joint

Abstract

The utility model relates to a kind of adjustable interface coaxial degree sealing joint, including first chuck and second chuck, sealing element is installed between the sealing surface of first chuck and second chuck, the second chuck is composed of first piece and second piece of split, the first piece is sleeved in the outside of second piece, there is sealing surface on the second piece, the first piece is fixedly connected with first chuck and after connection, second piece is clamped between first piece and sealing element, the first piece and second piece are configured to have radial clearance and can be relatively moved along radial direction. The utility model can adjust interface coaxial degree, effectively eliminate manufacturing error, the coaxial degree requirement of joint is low, convenient butt joint, and can guarantee sealing effect.

Description

Technical Field

[0001] This utility model belongs to the field of liquid pipe connector technology, and specifically relates to an adjustable interface coaxiality sealing connector. Background Technology

[0002] like Figure 1 As shown, the conventional pipeline sealing method uses two chucks, including a first chuck 1 and a second chuck 2. The first chuck 1 and the second chuck 2 are respectively connected to the ends of two rigid pipe fittings and are rigidly connected. Grooves are provided on the first chuck 1 and the second chuck 2 respectively. A sealing element 3 is installed between the sealing surfaces of the two first chuck 1 and the second chuck 2. The sealing element 3 is a sealing gasket and has sealing protrusions on both sides. The sealing protrusions 4 are respectively embedded in the grooves on the first chuck 1 and the second chuck 2.

[0003] This connection method requires a high degree of coaxiality between the two mating interfaces. During installation, it is necessary to determine the sealing protrusion and the groove of the chuck to ensure that the gasket and the chuck are concentric, thereby ensuring the sealing performance of the gasket and the chuck. If there are machining errors in the left and right chucks, resulting in differences in the Z-axis of the joint, the two joints will be out of axis when mating, causing problems such as inability to connect or poor assembly, which in turn leads to the failure of the gasket under stress and leakage. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide an adjustable interface coaxiality sealing joint that can effectively eliminate manufacturing errors, has low requirements for joint coaxiality, facilitates docking and connection, and ensures sealing effect.

[0005] To solve the aforementioned technical problem, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] An adjustable interface coaxiality sealing joint includes a first chuck and a second chuck, with a sealing element installed between the sealing surfaces of the first chuck and the second chuck. The second chuck is composed of a separate first part and a second part, with the first part fitted over the outside of the second part and having a sealing surface on the second part. The first part is fixedly connected to the first chuck and, after connection, secures the second part between the first part and the sealing element. The first part and the second part are configured to have a radial clearance and be able to move relative to each other radially.

[0007] Furthermore, the sealing surface of the first chuck is a plane.

[0008] Furthermore, an axially recessed annular waterproof groove is provided on the plane.

[0009] Furthermore, the sealing surface of the second component has an annular groove for accommodating the seal.

[0010] Furthermore, the sealing element includes an annular sealing gasket and an annular sealing protrusion. The sealing protrusion is disposed on one side of the sealing gasket and is embedded in the annular groove after installation. The other side of the sealing gasket is attached to the sealing surface of the first chuck.

[0011] Furthermore, the outer circumferential diameters of the first chuck and the first piece are equal, and the first chuck and the first piece are fixedly connected by a clamp assembly.

[0012] Furthermore, the first piece is a ring structure with a stepped inner surface forming a large-diameter section and a small-diameter section. The second piece is embedded in the large-diameter section, and the other side of the second piece opposite to the sealing surface is axially fitted with the stepped surface of the first piece.

[0013] Furthermore, the outer end face of the second piece and the inner surface of the large-diameter section of the first piece are matching bevels.

[0014] Furthermore, the radial clearance is 1-3 mm.

[0015] Furthermore, the first chuck is rigidly connected to the first pipe fitting, and the second piece is rigidly connected to the second pipe fitting.

[0016] In summary, the adjustable interface coaxiality sealing joint provided by this utility model has the following advantages compared with the prior art:

[0017] (1) This utility model designs the second chuck as a split structure, with a radial gap between the first and second components that make up the second chuck. During docking operations, the second component can be moved radially relative to the first component according to the docking position and coaxiality deviation of the first and second chucks. This solves the problem of assembly failure caused by the cumulative error of each component. It can not only effectively eliminate the influence of the manufacturing error of the sealing joint on the joint connection, but also facilitate the adjustment of the coaxiality of the interface. The coaxiality requirement of the sealing joint can be greatly reduced, which reduces the processing accuracy requirements of related accessories and helps to reduce manufacturing costs. At the same time, it is also more convenient to dock and connect the first and second chucks, making the installation simpler and faster, improving production efficiency, improving operability, and lowering the skill requirements of employees.

[0018] (2) This utility model can effectively guarantee the sealing effect while ensuring coaxiality, and there is no risk of leakage, so it has high reliability.

[0019] (3) This utility model can meet the tolerance requirements of different workpiece assembly, is applicable to various pipe diameters, and has good expandability.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0022] In the attached diagram:

[0023] Figure 1 This is a schematic diagram of an existing sealing joint structure;

[0024] Figure 2 This is a schematic diagram of the installation structure of the sealing joint of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the sealing joint of this utility model;

[0026] Figure 4 yes Figure 3 A magnified view of part A;

[0027] Figure 5 yes Figure 3 A magnified view of part A (with the first piece removed);

[0028] Figure 6 This is a schematic diagram of the first part of this utility model.

[0029] In the picture:

[0030] First chuck 1, sealing surface 11, second chuck 2, first piece 21, large diameter section 211, small diameter section 212, stepped surface 213, second piece 22, sealing surface 23, annular groove 24, inclined surface 25, sealing element 3, sealing gasket 31, sealing protrusion 32, first pipe fitting 4, second pipe fitting 5, inclined surface 6, water tank 7, water pipe 8.

[0031] It should be noted that the accompanying drawings and text description are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] like Figure 2 As shown, this utility model provides an adjustable interface coaxiality sealing joint, suitable for sealing and connecting two sections of liquid pipeline. For example, it can be used for connecting pipelines between water tank 7 and water pipe 8.

[0036] like Figures 3 to 6 As shown, in this embodiment, the sealing joint includes a first chuck 1 and a second chuck 2. A sealing element 3 is installed between the sealing surfaces of the first chuck 1 and the second chuck 2. The first chuck 1 is rigidly connected to the first pipe fitting 4, and the second chuck 2 is rigidly connected to the second pipe fitting 5. The chucks are connected to their corresponding pipe fittings by welding. The first chuck 1 and the second chuck 2 are connected using fasteners such as clamp assemblies (not shown in the figure). The first chuck 1 and the second chuck 2 clamp the sealing element 3 in the middle, thereby achieving a seal at the connection. The inner diameters of the first pipe fitting 4 and the second pipe fitting 5 can be the same or different. In this embodiment, the inner diameter of the second pipe fitting 5 is slightly larger than the inner diameter of the first pipe fitting 4.

[0037] The clamp assembly can adopt any clamp structure in the prior art, as long as it can fasten the first chuck 1 and the second chuck 2. In this embodiment, preferably, the clamp assembly adopts a structure composed of two semi-circular clamps in the prior art. The two semi-circular clamps are rotatably connected at one end by a hinge shaft, and fixed at the other end by a fastening bolt. The inner surfaces of the two semi-circular clamps have grooves. After the first chuck 1 and the second chuck 2 are fitted together, they are clamped into the grooves 63, and clamping and fixing are achieved by tightening the fastening bolts. The inner sides of the grooves and the outer sides of the first chuck 1 and the second chuck 2 are all mating inclined surfaces 6, which facilitates the engagement between the clamp and the first chuck 1 and the second chuck 2.

[0038] In this embodiment, the second chuck 2 is composed of a first part 21 and a second part 22. The first part 21 is fitted onto the outside of the second part 22, and after installation, the outer diameter of the first part 21 is the same as the outer diameter of the first chuck 1. After fitting together, they are inserted into the groove 63 of the clamp assembly. The outer surface of the first part 21 is an inclined surface that mates with the groove 63. The second part 22 has a sealing surface 23 that contacts the sealing element 3. During connection, the first part 21 and the first chuck 1 are fixedly connected using the clamp assembly, and after the fixed connection, the second part 22 is secured between the first part 21 and the sealing element 3. The second pipe 5 is rigidly connected to the second part 22. The first part 21 and the second part 22 are configured to have a radial gap H, allowing the first part 21 and the second part 22 to move relative to each other radially.

[0039] By designing the second chuck 2 as a split structure, with a radial gap between the first component 21 and the second component 22 constituting the second chuck 2, the second component 22 can be radially moved relative to the first component 21 during on-site docking operations, based on the docking position of the first chuck 1 and the second chuck 2. This effectively eliminates the influence of manufacturing errors in the sealing joint on the joint connection, facilitates adjustment of the coaxiality of the interface, significantly reduces the coaxiality requirements of the sealing joint, lowers the machining accuracy requirements of related accessories, helps reduce manufacturing costs, and also facilitates the docking connection between the first chuck 1 and the second chuck 2, making installation simpler and faster, improving production efficiency and operability, and requiring less skill from employees, while also effectively ensuring the sealing effect. Furthermore, this structure can meet the tolerance requirements of different workpiece assembly, is applicable to various pipe diameters, and has good scalability.

[0040] The radial clearance H can be adjusted according to the assembly tolerance. Based on the approximate range of manufacturing errors of the chuck and fittings, in this embodiment, it is further preferred that the radial clearance H is 1-3mm, which is sufficient to cover the adjustment range used to eliminate manufacturing errors, while ensuring the reliability of the connection and the sealing effect.

[0041] like Figures 3 to 5 As shown, in this embodiment, it is further preferred that the sealing element 3 includes an annular sealing gasket 31 and an annular sealing protrusion 32, with the sealing protrusion 32 only disposed on one side of the sealing gasket 31 (the side facing the second piece 22). The sealing surface 11 of the first chuck 1 is flat, and the side of the sealing gasket 31 without the sealing protrusion 32 is in close contact with the sealing surface 11. The sealing surface 23 of the second piece 22 has an annular groove 24 for accommodating the sealing protrusion 32. By adjusting the position of the second piece 22 relative to the first piece 21 in the radial direction, the sealing protrusion 32 can be completely embedded in the annular groove 24 after installation.

[0042] In this way, since the sealing surface 11 of the first chuck 1 is a plane, the sealing gasket 31 and the sealing surface 11 no longer need to be positioned. It is only necessary to adjust the radial position of the second piece 22 on the second chuck 2 relative to the first piece 21. This ensures that the sealing protrusion 32 is embedded in the annular groove 24 on the second piece 22, so that the sealing gasket 31 and the sealing protrusion 32 can be positioned and squeezed on the mating surface, thereby ensuring the sealing effect. This is beneficial to further reduce the requirements for the coaxiality of the sealing joint, and also makes the installation simpler and faster.

[0043] In this embodiment, it is further preferred that an axially recessed annular waterproof groove (not shown in the figure) be further provided on the sealing surface 11 (plane) of the first chuck 1. The annular waterproof groove is located radially inside the sealing protrusion 32. In this way, even if the sealing effect of the sealing gasket 31 fails, the waterproof groove can be used to prevent rainwater and other external water from entering the interior of the pipe through the gap between the sealing surface 11 of the first chuck 1 and the sealing gasket 31.

[0044] like Figure 3 , Figure 4 , Figure 6 As shown, in this embodiment, preferably, the first piece 21 is an annular structure with a stepped inner surface forming a large-diameter section 211 and a small-diameter section 212. The second piece 22 is embedded in the large-diameter section 211. The side of the second piece 22 opposite to the sealing surface 23 is axially fitted with the stepped surface 213 of the first piece 21, using the stepped surface 213 to axially limit the second piece 22. This not only allows the second piece 22 to be tightly fixed inside the first piece 21, but also ensures a sealing effect between the first piece 21 and the second piece 22.

[0045] In this embodiment, it is further preferred that the outer end face of the second piece 22 and the inner surface of the large-diameter section 211 of the first piece 21 are matching inclined surfaces 25. This is beneficial for limiting the second piece 22 in the radial and axial directions, ensuring that the second piece 22 can be firmly locked between the first piece 21 and the first chuck 1. At the same time, the inclined surface design also makes it convenient to fit the first piece 21 onto the outside of the second piece 22.

[0046] like Figures 2 to 6 As shown, the installation steps for this sealing joint are as follows:

[0047] 1. Connect the first chuck 1 and the second chuck 2 of the connecting fittings on the water tank 7 and the water pipe 8, and install the sealing element 3 between the first chuck 1 and the second chuck 2.

[0048] 2. Place the first piece 21 in the second chuck 2 onto the outside of the second piece 22.

[0049] 3. When there is a machining accuracy error between the two first chucks 1 and the second chuck 2, according to the relative installation positions between the first chuck 1, the second chuck 2 and the seal 3, the first chuck 1 is used as the installation reference. The radial position of the second part 22 in the second chuck 2 relative to the first part 21 is adjusted so that the sealing protrusion 32 in the seal 3 is embedded in the annular groove 24 on the second part 22, so that the sealing surface 11 of the first chuck 1 and the sealing surface 23 of the second part 22 are respectively in contact with the two sides of the sealing gasket 31.

[0050] 4. Attach the slot 63 of the clamp assembly to the outside of the first chuck 1 and the second chuck 2 after they are attached, and then tighten the fastening bolt 62 at one end to fix the first chuck 1 and the second chuck 2 together.

[0051] The above technical solution has the following beneficial effects:

[0052] 1. The structure of this sealing joint, by designing the second chuck 2 as a split structure, with a radial gap between the first part 21 and the second part 22 that make up the second chuck 2, allows for radial adjustment of the second part 22 relative to the first part 21 during on-site docking operations, based on the docking position of the first chuck 1 and the second chuck 2. This solves the problem of assembly failure caused by the cumulative errors of each component. It not only effectively eliminates the influence of manufacturing errors on the joint connection, but also significantly reduces the coaxiality requirements of the sealing joint, lowers the processing precision requirements of related accessories, and helps reduce manufacturing costs. At the same time, it also facilitates the docking connection between the first chuck 1 and the second chuck 2, making installation simpler and faster, improving production efficiency, enhancing operability, and lowering the skill requirements for employees.

[0053] 2. The structure of this sealing joint ensures coaxiality while effectively guaranteeing the sealing effect, eliminating the risk of leakage and ensuring high reliability.

[0054] 3. The structure of this sealing joint can also meet the tolerance requirements of different workpiece assembly, and it is applicable to various pipe diameters, with good expandability.

[0055] 4. The structure of the sealing joint is such that the sealing surface 11 of the first chuck 1 is designed as a plane, eliminating the groove structure on the sealing surface 11 for embedding the sealing protrusion in the prior art. After installation, it can not only ensure the sealing effect, but also help to further reduce the requirements for the coaxiality of the sealing joint, and further make the installation simpler and faster.

[0056] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An adjustable interface coaxiality seal joint comprising a first chuck and a second chuck with a seal mounted between sealing faces of the first and second chucks, characterized by: The second chuck consists of a first part and a second part, the first part being fitted onto the outside of the second part and having a sealing surface on the second part. The first part is fixedly connected to the first chuck and, after connection, secures the second part between the first part and the sealing surface. The first part and the second part are configured to have a radial gap and be movable relative to each other in the radial direction.

2. The adjustable interface coaxiality seal joint of claim 1, wherein: The sealing surface of the first chuck is a plane.

3. The adjustable interface coaxiality seal joint of claim 2, wherein: An axially recessed annular waterproof groove is provided on the plane.

4. The adjustable interface coaxiality seal joint of claim 1, wherein: The sealing surface of the second part has an annular groove for accommodating the seal.

5. The adjustable interface coaxiality seal joint of claim 4, wherein: The sealing element includes an annular sealing gasket and an annular sealing protrusion. The sealing protrusion is disposed on one side of the sealing gasket and is embedded in the annular groove after installation. The other side of the sealing gasket is attached to the sealing surface of the first chuck.

6. The adjustable interface coaxiality seal joint of claim 1, wherein: The outer circumferential diameters of the first chuck and the first piece are equal, and the first chuck and the first piece are fixedly connected by a clamp assembly.

7. The adjustable interface coaxiality seal joint of claim 1, wherein: The first piece is a ring structure with a stepped inner surface forming a large-diameter section and a small-diameter section. The second piece is embedded in the large-diameter section, and the other side of the second piece opposite to the sealing surface is axially fitted with the stepped surface of the first piece.

8. The adjustable interface coaxiality seal joint of claim 7, wherein: The outer end face of the second piece and the inner surface of the large-diameter section of the first piece are matching bevels.

9. The adjustable interface coaxiality seal joint of claim 1, wherein: The radial clearance is 1-3 mm.

10. The adjustable interface coaxiality sealing joint according to any one of claims 1-9, characterized in that: The first chuck is rigidly connected to the first pipe fitting, and the second piece is rigidly connected to the second pipe fitting.

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