Chuck for connecting pipelines

Abstract

The utility model discloses a chuck for connecting pipelines, which comprises a chuck main body, and the pipeline connecting end of the chuck main body is provided with a telescopic sleeve structure; the telescopic sleeve structure comprises a plurality of connecting pipes, and the connecting pipe with the largest diameter in the connecting pipes is connected with the pipeline connecting end of the chuck body. An O-shaped sealing ring is installed on the outer side wall of the connecting pipe with the small diameter in every two adjacent connecting pipes. An annular sealing groove used for containing the O-shaped sealing ring in an attached mode is formed in the inner side wall of the connecting pipe with the large diameter in every two adjacent connecting pipes. According to the chuck used for connecting the pipelines, due to the arrangement of the telescopic sleeve structure, the pipelines with different calibers can be installed, the pipelines have good sealing performance after being installed, and the applicability of the device is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection equipment, in particular to a chuck used for connecting pipelines. Background Art

[0002] A pipe clamp is a device used to connect, secure, and seal pipes. It's primarily used in various piping systems, including industrial piping, water supply and drainage piping, hydraulic piping, and many other fields. It functions like a "pipe clamp," mechanically securing the pipe tightly and effectively preventing leakage.

[0003] However, the pipe joints of current pipe chucks usually adopt fixed sizes, that is, they can only be installed with pipes of a single caliber, resulting in poor applicability of the device.

[0004] Based on this, the present invention proposes a chuck for connecting pipelines to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a chuck for connecting pipelines, so as to realize the installation of multiple pipelines with different diameters and improve the applicability of the device.

[0006] In order to solve the above technical problems, the utility model provides a chuck for connecting pipelines, including a chuck main body, and the pipeline connecting end of the chuck main body has a telescopic sleeve structure; the main body of the telescopic sleeve structure is arranged in a stepped manner, and the telescopic sleeve structure includes a plurality of connecting tubes arranged in a sliding and nested manner, and the connecting tube with the largest diameter among the multiple connecting tubes is connected to the pipeline connecting end of the chuck main body; the outer side wall of the connecting tube with the smaller diameter among the two adjacent connecting tubes is installed with an O-ring, and the O-ring is located at one end of the connecting tube close to the chuck main body; the inner side wall of the connecting tube with the larger diameter among the two adjacent connecting tubes is installed with an annular sealing groove for fitting and accommodating the O-ring, and the annular sealing groove is located at the end of the connecting tube away from the chuck main body.

[0007] Furthermore, the O-ring is installed on the connecting pipe through an installation ring groove sleeve.

[0008] Furthermore, the mounting ring groove adopts a dovetail groove structure.

[0009] Furthermore, the outer periphery of one end of the connecting tube away from the chuck body has a chamfered structure.

[0010] Furthermore, a plurality of trapezoidal grooves are formed at intervals on the outer side wall of one end of the connecting tube away from the chuck body.

[0011] Furthermore, an annular transition groove is provided on the inner side wall of the connecting pipe with the larger diameter among the two adjacent connecting pipes. The annular transition groove is located on the side of the annular sealing groove close to the chuck body, and the depth of the annular transition groove is greater than that of the annular sealing groove.

[0012] Furthermore, an arc surface is used for transition between the annular transition groove and the annular sealing groove.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] The chuck for connecting pipelines provided by the utility model can install pipelines of various different calibers through the arrangement of the telescopic sleeve structure, and the pipelines have good sealing performance after installation, which effectively improves the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a chuck for connecting pipelines in the utility model;

[0016] Figure 2 This is a schematic diagram of the telescopic sleeve structure in the chuck for connecting pipelines of the present invention when it is in a fully retracted state;

[0017] Figure 3 This is a schematic diagram of the telescopic sleeve structure in the chuck for connecting pipelines of the present invention when it is in a partially extended state;

[0018] Figure 4 This is a schematic diagram of the telescopic sleeve structure in the chuck for connecting pipelines of the utility model when it is in a fully extended state.

[0019] In the figure: 1. chuck body; 2. telescopic sleeve structure; 21. connecting pipe; 211. annular sealing groove; 212. chamfer structure; 213. trapezoidal groove; 214. annular transition groove; 215. arc surface; 216. mounting ring groove; 22. O-ring. DETAILED DESCRIPTION

[0020] The following is a more detailed description of the chuck for connecting pipes of the present invention, with reference to schematic diagrams, which illustrate preferred embodiments of the present invention. It should be understood that those skilled in the art may modify the present invention as described herein while still achieving the beneficial effects of the present invention. Therefore, the following description should be understood as a general guide for those skilled in the art and not as a limitation of the present invention.

[0021] The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0022] like Figure 1 As shown, an embodiment of the present invention proposes a chuck for connecting pipelines, comprising a chuck body 1 , wherein the pipeline connecting end of the chuck body 1 has a telescopic sleeve structure 2 , and the main body of the telescopic sleeve structure 2 is arranged in a stepped manner.

[0023] Specifically, with reference Figure 2-4 The telescopic sleeve structure 2 includes a plurality of connecting tubes 21 that are slidably nested, and the connecting tube 21 with the largest diameter among the plurality of connecting tubes 21 is connected to the pipeline connecting end of the chuck body 1.

[0024] An O-ring 22 is installed on the outer side wall of the connecting tube 21 with a smaller diameter among the two adjacent connecting tubes 21 . The O-ring 22 is located at one end of the connecting tube 21 close to the chuck body 1 .

[0025] An annular sealing groove 211 for accommodating the O-ring 22 is installed on the inner side wall of the connecting tube 21 with a larger diameter among the two adjacent connecting tubes 21 . The annular sealing groove 211 is located at one end of the connecting tube 21 away from the chuck body 1 .

[0026] The following examples are given to specifically illustrate the above embodiment:

[0027] exist Figure 2-4 In the embodiment, the telescopic sleeve structure 2 has three connecting pipes 21, and the three connecting pipes 21 can be installed with pipes of 6mm, 4mm and 2mm diameters from the outside to the inside respectively.

[0028] When installing a 6mm diameter pipe, the middle and innermost connecting pipe 21 installation sections do not need to be extended (e.g. Figure 2 At this time, put the 6mm diameter pipeline on the left connecting pipe 21 and fix it with a clamp to achieve the installation of the 6mm diameter pipeline.

[0029] When installing a 4mm diameter pipe, pull the middle connecting pipe 21 to expose its installation section, and make the O-ring 22 on the middle connecting pipe 21 fit into the annular sealing groove 211 in the outermost connecting pipe 21 (as shown in the figure). Figure 3 At this time, the 4mm diameter pipeline is installed by putting the 4mm diameter pipeline on the installation section of the middle connecting pipe 21 and fixing it with a clamp.

[0030] When installing a 2mm diameter pipeline, fully extend the telescopic tube structure 2 so that the installation section of the innermost connecting tube 21 is exposed, and both O-rings 22 are inserted into their corresponding annular sealing grooves 211 (such as Figure 4 At this time, the 2mm diameter pipeline is put on the installation section of the innermost connecting pipe 21 and fixed with a clamp to achieve the installation of the 4mm diameter pipeline.

[0031] In the above implementation process, the O-ring 22 cooperates with its corresponding annular sealing groove 211, which not only realizes effective sealing between adjacent connecting pipes 21, but also stabilizes the connecting pipes 21, thereby avoiding sealing failure.

[0032] In summary, the chuck for connecting pipelines provided in this embodiment can install pipelines of various different calibers through the provision of the telescopic sleeve structure 2, and the pipelines have good sealing performance after installation, effectively improving the applicability of the device.

[0033] In a specific embodiment, the O-ring 22 is mounted on the connecting pipe 21 through a mounting ring groove 216 .

[0034] Specifically, the mounting ring groove 216 adopts a dovetail groove structure.

[0035] A dovetail joint is a mechanical structure shaped like a swallow's tail. It typically consists of a dovetail-shaped projection (called a dovetail tenon) and a matching dovetail-shaped groove (called a dovetail slot). The two sides of a dovetail tenon are inclined, typically at a certain angle (common angles include 45°, 50°, and 55°), and the width gradually changes from one end to the other.

[0036] The O-ring 22 is installed using a dovetail groove, which has the following advantages:

[0037] (1) The shape of the dovetail groove enables the O-ring 22 to fit tightly with all four sides of the dovetail groove after installation, forming a four-sided sealing structure, effectively reducing the leakage path and greatly improving the sealing effect. At the same time, the special shape of the dovetail groove makes the O-ring 22 in a "tightened" state after installation, generating a large sealing internal stress, thereby enhancing the ability to resist leakage and better cope with the sealing challenges under harsh working conditions such as high pressure and high temperature;

[0038] (2) The trapezoidal structure of the dovetail groove has a good axial limiting effect on the O-ring 22. During the sliding process of the connecting pipe 21, even if the O-ring 22 is subjected to a large axial force or vibration, it is not easy to axially disengage from the dovetail groove, thereby ensuring the stability of the sealing structure.

[0039] In a preferred embodiment, the outer periphery of one end of the connecting tube 21 away from the chuck body 1 has a chamfered structure 212, so as to facilitate the connection between the connecting tube 21 and the pipeline.

[0040] Furthermore, a plurality of trapezoidal grooves 213 are formed on the outer wall of the end of the connecting tube 21 away from the chuck body 1. The arrangement of the plurality of trapezoidal grooves 213 not only facilitates the connection between the connecting tube 21 and the pipeline, but also improves the sealing between the pipeline and the connecting tube 21.

[0041] In an optional embodiment, an annular transition groove 214 is provided on the inner side wall of the connecting tube 21 with a larger diameter among the two adjacent connecting tubes 21. The annular transition groove 214 is located on the side of the annular sealing groove 211 close to the chuck body 1, and the depth of the annular transition groove 214 is greater than that of the annular sealing groove 211.

[0042] The provision of the annular transition groove 214 effectively reduces the risk of damage to the O-ring 22 due to excessive extrusion or friction.

[0043] Furthermore, a circular arc surface 215 is used to transition between the annular transition groove 214 and the annular sealing groove 211 to avoid the risk of sharp corners causing damage to the O-ring 22.

[0044] In summary, the present invention has at least the following advantages over the prior art:

[0045] The chuck for connecting pipelines provided by the utility model can install pipelines of various different calibers through the arrangement of the telescopic sleeve structure, and the pipelines have good sealing performance after installation, which effectively improves the applicability of the device.

[0046] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A chuck for connecting pipelines, characterized in that: including a chuck body; The pipeline connection end of the chuck body has a telescopic sleeve structure; The main body of the telescopic sleeve structure is arranged in a stepped manner, and the telescopic sleeve structure includes a plurality of connecting pipes arranged in a sliding and nested manner, and the connecting pipe with the largest diameter among the plurality of connecting pipes is connected to the pipe connection end of the chuck body; An O-ring is installed on the outer side wall of the connecting pipe with a smaller diameter among the two adjacent connecting pipes, and the O-ring is located at one end of the connecting pipe close to the chuck body; An annular sealing groove for fitting and accommodating the O-ring is installed on the inner side wall of the connecting pipe with the larger diameter among the two adjacent connecting pipes. The annular sealing groove is located at one end of the connecting pipe away from the chuck body.

2. The chuck for connecting pipes according to claim 1, wherein: The O-type sealing ring is installed on the connecting pipe through an installation ring groove sleeve.

3. The chuck for connecting pipes according to claim 2, wherein: The mounting ring groove adopts a dovetail groove structure.

4. The chuck for connecting pipelines according to claim 1, wherein: The outer periphery of one end of the connecting tube away from the chuck body has a chamfered structure.

5. The chuck for connecting pipelines according to claim 1, wherein: A plurality of trapezoidal grooves are formed at intervals on the outer side wall of one end of the connecting pipe away from the chuck body.

6. The chuck for connecting pipelines according to claim 1, wherein: An annular transition groove is provided on the inner side wall of the connecting pipe with the larger diameter among the two adjacent connecting pipes. The annular transition groove is located on the side of the annular sealing groove close to the chuck body. The depth of the annular transition groove is greater than that of the annular sealing groove.

7. The chuck for connecting pipelines according to claim 6, characterized in that: The annular transition groove and the annular sealing groove are transitioned by an arc surface.

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