A pipe joint with a positioning structure

Abstract

A pipe joint with a positioning structure, which solves the problem that in the prior art, the installation positions of composite pipes cannot be unified, and when different operators operate, the final effects are inconsistent, affecting the aesthetics and sealing performance of the product; the technical solution for solving the technical problem includes a joint body, a detachable positioning clip is installed on the outer ring wall of the joint body, and the positioning clip is provided with a first positioning surface and a second positioning surface for positioning pipe fittings of different calibers. The first positioning surface and the second positioning surface are parallel surfaces spaced along the axis of the joint body. A sleeve with one end surface fitting the second positioning surface and coaxial with the joint body is sleeved on the joint body. An annular cavity for inserting the pipe fitting is formed between the sleeve and the joint body. The end of the pipe fitting inserted into the annular cavity extends out of the annular cavity and is positioned by the first positioning surface; the present invention can well perform the plugging and positioning of the pipe fitting and achieve a good sealing effect.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe joints, and in particular to a pipe joint with a positioning structure. Background Art

[0002] For the connection of pipe fittings, pipe joints are often used as intermediate connecting parts for different pipe materials. At the connection part of the pipe joint, sealing performance is one of the most important technical requirements. Currently, the connection and sealing method at the pipe joint part is to use threaded connection to ensure sealing. This connection method is convenient, but after the threads are used for a certain period of time, leakage is likely to occur. For some parts that do not need to be disassembled frequently, this method is not the preferred choice, and reliable sealing performance is mainly considered for these parts.

[0003] Currently, many pipe fittings are sealed by baking and pressing a copper sleeve to achieve the sealing of the pipe fitting and the pipe joint by extrusion force. This sealing treatment is equivalent to "welding" and has a good sealing effect. However, when using a copper sleeve for sealing, the pipe to be sealed is generally a flexible pipe. To ensure a good sealing effect, a sufficient length needs to be guaranteed, that is, when the copper sleeve is connected to the outside of the pipe, a certain distance of margin needs to be reserved at the end of the flexible pipe. When the margin is small, leakage is likely to occur after sealing. Currently, most operators determine the margin of the pipe by visual inspection. Due to visual errors in different environments and their own judgment errors, either too long or too short, it will affect the sealing effect to a certain extent.

[0004] Therefore, it is very necessary to design a pipe joint that can conveniently determine the sealing margin required for the pipe fitting to be connected. Summary of the Invention

[0005] The purpose of the present invention is to provide a pipe joint with a positioning structure to solve the problems in the prior art that the installation positions of composite pipes cannot meet the same standard, and when different operators operate, the final achieved effects are inconsistent, affecting the aesthetics and sealing performance of the product.

[0006] The present invention provides a pipe joint with a positioning structure. The technical solution for solving the technical problem includes a joint body with a tubular structure. A detachable positioning clip is installed on the outer ring wall of the joint body. The positioning clip is provided with a first positioning surface and a second positioning surface for positioning pipe fittings of different calibers. The first positioning surface and the second positioning surface are parallel planes spaced along the axis of the joint body. A sleeve coaxial with the joint body and having one end surface fitting the second positioning surface is sleeved on the joint body. An annular cavity for inserting the pipe fitting is formed between the sleeve and the joint body. The end of the pipe fitting inserted into the annular cavity extends out of the annular cavity and is positioned by the first positioning surface.

[0007] Preferably, the positioning clip includes a snap ring, a notch is provided on the snap ring, and one end face of the snap ring serves as the first positioning surface.

[0008] Preferably, a positioning platform is provided on the end face of the snap ring that serves as the first positioning surface, and the end face of the positioning platform serves as the second positioning surface.

[0009] Preferably, there are two positioning platforms, and the two positioning platforms are symmetrically distributed about the midline of the snap ring.

[0010] Preferably, the width of the notch is smaller than the outer diameter of the joint body.

[0011] Preferably, the inner side wall of the positioning platform is an arc surface.

[0012] Preferably, positioning platforms are provided on both end faces of the snap ring.

[0013] Preferably, an annular groove is provided on the outer ring wall of the joint body, and the snap ring is clamped in the annular groove.

[0014] Preferably, the distance between the second positioning surface and the first positioning surface is 5 - 10 cm.

[0015] In the present invention, a positioning clip with a positioning function on the pipe joint is designed. During use, the positioning clip is radially sleeved on the pipe joint through the opening on the annular belt. The first positioning surface and the second positioning surface that are spaced apart along the axis of the joint body are used to limit the position of the shaft head of different pipe fittings. Specifically, the second positioning surface is used to position the sleeve body, and the sleeve body serves as a sealing force-applying member, generally a copper sleeve. The first positioning surface is used to position the connecting pipe fitting. By forming a certain height difference between the shaft heads of the sleeve body and the connecting pipe fitting, the allowance of the connecting pipe fitting during the sealing process through the sleeve body is controlled, thereby achieving a better sealing effect.

[0016] In summary, by applying the technical solution of the present invention, at least the following beneficial effects are achieved:

[0017] 1. When the pipe joint is hermetically connected to the pipe fitting, it is convenient to accurately determine the distance between the pipe fitting and the sleeve body, which can effectively ensure the sealing effect;

[0018] 2. The positioning clip can be radially installed and disassembled from the pipe joint body and can be reused;

[0019] 3. This structure can be applied to various pipe fittings, such as tee joints, elbow joints, straight pipe joints, etc., and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0021] Figure 1 It is the structural diagram of the straight pipe joint with a positioning structure of the present invention;

[0022] Figure 2 It is the structural diagram of the 90° elbow joint with a positioning structure of the present invention;

[0023] Figure 3 It is the structural diagram of the tee joint with a positioning structure of the present invention;

[0024] Figure 4 It is the structural diagram of one side of the present invention with a positioning platform;

[0025] Figure 5 It is the structural diagram of both sides of the present invention with a positioning platform. Detailed implementation manners

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] By the appendix Figures 1-5It can be seen that the present invention provides a pipe joint with a positioning structure, including a joint body 1 in a tubular structure. A detachable positioning clip 2 is installed on the outer ring wall of the joint body 1. The detachable structure facilitates repeated use. The positioning clip 2 is provided with a first positioning surface 3 and a second positioning surface 4 for positioning pipe fittings of different calibers. The first positioning surface 3 and the second positioning surface 4 are parallel planes spaced along the axis of the joint body 1. A sleeve 5 with one end surface fitting the second positioning surface 4 and coaxial with the joint body 1 is sleeved on the joint body 1. The sleeve 5 is a metal seal, generally a copper sleeve. During initial assembly, the diameter of the inserted pipe fitting 11 is smaller than the diameter of the sleeve 5, and the pipe fitting 11 can be easily inserted into the annular cavity 6 between the sleeve 5 and the joint body 1. The second positioning surface 4 is used to position the sleeve 5. The sleeve 5, as a sealing force-applying member, is generally a copper sleeve. The first positioning surface 3 is used to position the connecting pipe fitting 11. By forming a certain height difference between the sleeve 5 (generally a copper sleeve structure) and the shaft head of the connecting pipe fitting 11, the allowance of the connecting pipe fitting 11 during the sealing process through the sleeve 5 (generally a copper sleeve using the baking and pressing method) is controlled, thereby achieving a better sealing effect.

[0028] The positioning clip 2 includes a snap ring 9. A notch 10 is provided on the snap ring 9. The design of the notch 10 enables the detachable connection between the positioning clip 1 and the joint body 1. The positioning clip 10 can be radially clamped on the joint body 1 through the notch 10, avoiding the problem that it cannot be taken out after the pipe fittings are connected when axially inserted.

[0029] One preferred embodiment of the present invention is that a positioning platform 7 is provided on the snap ring 9. In addition to the end surface serving as the second positioning surface 4, the positioning platform 7 also has the function of pre-positioning the inserted pipe fitting 11. Specifically, there are two positioning platforms 7 symmetrically distributed about the midline of the snap ring 9. The inner side surface of the positioning platform 7 is an inner arc surface structure, which can be used to achieve the radial positioning of the inserted pipe fitting 11. Combining with the axial positioning of the inserted pipe fitting 11 by the first positioning surface, a two-way positioning effect is achieved.

[0030] The width of the notch 10 is smaller than the outer diameter of the joint body 1, which can realize the good fixation of the positioning clip on the joint body.

[0031] One preferred embodiment of the present invention regarding the positioning clip is that positioning platforms 7 are provided on both end surfaces of the snap ring 9. This situation is applicable when pipe fittings need to be connected at both ends of the pipe joint, such as Figure 1 shown in the straight-through type pipe joint.

[0032] To facilitate the connection between the positioning clip 2 and the joint body 1, an annular groove 8 is provided on the outer ring wall of the joint body 1. The snap ring 9 is clamped in the annular groove 8, and the snap ring 9 forms a mating fixation with the outer wall of the joint body 1 through the internal clamping portion.

[0033] In the present invention, the distance between the second positioning surface 4 and the first positioning surface 3 is selected to be 5-10 cm; generally, the optimal distance is 8 cm, which is obtained according to the sealing effect of the actual work.

[0034] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A pipe joint with a positioning structure, comprising a joint body (1) in a tubular structure, characterized in that, a detachable positioning clip (2) is installed on the outer ring wall of the joint body (1), and the positioning clip (2) is provided with a first positioning surface (3) and a second positioning surface (4) for positioning pipe fittings of different calibers. The first positioning surface (3) and the second positioning surface (4) are parallel surfaces spaced along the axis of the joint body (1). A sleeve body (5) with one end surface fitting the second positioning surface (4) and coaxial with the joint body (1) is sleeved on the joint body (1). The second positioning surface (4) is used to position the sleeve body (5). An annular cavity (6) for inserting a pipe fitting is formed between the sleeve body (5) and the joint body (1). The end of the pipe fitting inserted into the annular cavity (6) extends out of the annular cavity (6) and is positioned by the first positioning surface (3); the positioning clip (2) includes a snap ring (9), and a notch (10) is provided on the snap ring (9). The width of the notch (10) is smaller than the outer diameter of the joint body (1), and one end surface of the snap ring (9) serves as the first positioning surface (3); a positioning platform (7) is arranged on the end surface of the snap ring (9) serving as the first positioning surface (3), and the end surface of the positioning platform (7) serves as the second positioning surface (4); two positioning platforms (7) are provided, and the two positioning platforms (7) are symmetrically distributed about the center of the snap ring (9).

2. The pipe joint with a positioning structure according to claim 1, characterized in that, the inner side wall of the positioning platform (7) is an arc surface.

3. The pipe joint with a positioning structure according to claim 1, characterized in that, positioning platforms (7) are arranged on both end surfaces of the snap ring (9).

4. The pipe joint with a positioning structure according to claim 1, characterized in that, an annular groove (8) is provided on the outer ring wall of the joint body (1), and the snap ring (9) is clamped in the annular groove (8).

5. The pipe joint with a positioning structure according to claim 1, characterized in that, the interval between the second positioning surface (4) and the first positioning surface (3) is 5 - 10 cm.

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