Pipe joint and pipe structure

Abstract

The utility model discloses a pipe joint and a pipe structure, and relates to the technical field of pipe fittings. The pipe connector comprises a first connecting pipe and two second connecting pipes which are coaxially arranged at the two ends of the first connecting pipe correspondingly, an expandable fastening sleeve is coaxially arranged in each second connecting pipe, a guide part is arranged on the outer wall of each fastening sleeve, and guide grooves are formed in the inner walls of the second connecting pipes in the circumferential direction of the second connecting pipes; and the guide part is embedded in the guide groove in a sliding manner. According to the pipe connector, the pipe inserted into the fastening sleeve and the second connecting pipe can be relatively locked through the expansion and shrinkage effect of the fastening sleeve, the connecting difficulty of the pipe is reduced, and the laying efficiency of the pipe is improved; and meanwhile, the guide part and the guide groove can be matched with each other to achieve expansion and shrinkage guide of the fastening sleeve, and the situation that the fastening sleeve shifts in the expansion and shrinkage process, and the fastening effect of the fastening sleeve on the pipe is affected is avoided.

Description

Technical Field

[0001] The present application relates to the field of pipe fittings, and in particular to a pipe joint and a pipe structure. Background Art

[0002] In the process of laying pipes, pipe joints are usually used to connect multiple pipes. In the prior art, the two ends of the pipe joint have internal threads, while the end of the pipe has external threads. The connection between the pipe joint and the pipe is achieved through the thread matching of the internal and external threads.

[0003] However, in the actual operation process, due to the relatively small space for laying the pipeline, the operator is unable to smoothly twist the pipe joints, which greatly increases the difficulty of pipe connection and reduces the efficiency of pipe laying. Utility Model Content

[0004] One purpose of the present application is to overcome the deficiencies of the prior art and provide a pipe joint that is convenient for connecting pipes.

[0005] The present application provides a pipe joint adopting the following technical solution:

[0006] A pipe joint, comprising a first pipe, two second pipes coaxially arranged at both ends of the first pipe, each of the second pipes is coaxially arranged with an expandable and contractible tightening sleeve, the side of the tightening sleeve has a first opening, the first opening is relatively opened or closed during the expansion and contraction process of the tightening sleeve, and the end of the tightening sleeve is provided with at least one clearance groove around its own circumference;

[0007] The outer wall of the fastening sleeve is provided with a guide portion, which is annular and arranged around the circumference of the fastening sleeve, and the inner wall of the second connecting pipe is provided with a guide groove around its own circumference, and the guide portion is slidably embedded in the guide groove and is loosely matched with the guide groove, and the side of the guide portion has a second opening, and the projection of the second opening on the fastening sleeve coincides with the first opening;

[0008] The inner wall of the fastening sleeve is provided with a plurality of limit blocks, which are arranged in a ring array around the circumference of the fastening sleeve. The limit blocks are truncated cone-shaped and have arc-shaped protective surfaces at their ends.

[0009] By adopting the above technical solution, the pipe can be directly inserted into the fastening sleeve and locked relative to the second connecting pipe through the expansion and contraction effect of the fastening sleeve, thereby reducing the difficulty of connecting the pipes and improving the laying efficiency of the pipes; at the same time, the guide part and the guide groove can cooperate with each other to realize the expansion and contraction guidance of the fastening sleeve, avoiding the fastening sleeve from shifting during the expansion and contraction process and affecting its fastening effect on the pipe.

[0010] Another object of the present application is to provide a pipe structure.

[0011] The present application provides a pipe joint adopting the following technical solution:

[0012] A pipe structure comprises a plurality of coaxially extending pipe bodies, wherein the pipe joints as described above are respectively installed between each two adjacent pipe bodies.

[0013] By adopting the above technical solution, when laying the pipe structure, multiple sections of pipe bodies can be laid in advance, and then the multiple sections of pipe bodies can be quickly connected through pipe joints, without the need to assemble the pipe structure in advance. This not only facilitates the transportation and storage of the pipe structure, but also improves the laying efficiency of the pipe structure.

[0014] In summary, the present application includes at least one of the following beneficial technical effects:

[0015] 1. The pipe can be directly inserted into the fastening sleeve and locked relative to the second pipe through the expansion and contraction of the fastening sleeve, which reduces the difficulty of pipe connection and improves the laying efficiency of the pipe;

[0016] 2. The guide portion and the guide groove can cooperate with each other to realize the expansion and contraction guidance of the fastening sleeve, so as to prevent the fastening sleeve from deviating during the expansion and contraction process and affecting its fastening effect on the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the pipe joint in Example 1 of the present application.

[0018] Figure 2 yes Figure 1 Schematic diagram of the axial cross section.

[0019] Figure 3 It is a schematic diagram of the structure of the fastening sleeve when it is contracted in Example 1 of the present application.

[0020] Figure 4 It is a schematic diagram of the structure of the fastening sleeve after expansion in Example 1 of the present application.

[0021] Figure 5 It is a right view of the pipe joint in Example 1 of the present application when the fastening sleeve is shrunk.

[0022] Figure 6 It is a right view of the pipe joint in Example 1 of the present application when the fastening sleeve is expanded.

[0023] Figure 7 It is a structural schematic diagram of the pipe structure in Example 2 of the present application.

[0024] Figure 8 yes Figure 7 Right view of .

[0025] Description of reference numerals:

[0026] 1. First connecting pipe; 2. Second connecting pipe; 3. Fastening sleeve; 4. Guide part; 5. Guide groove; 6. First opening; 7. Limit block; 8. Make way groove; 9. Second opening; 100. Pipe body. DETAILED DESCRIPTION

[0027] The present application is further described in detail below in conjunction with the accompanying drawings.

[0028] Example 1: See Figure 1-6 As shown, a pipe joint is shown, which includes a first pipe 1, two second pipes 2 coaxially arranged at both ends of the first pipe 1, each second pipe 2 is coaxially provided with an expandable and contractible fastening sleeve 3, the outer wall of the fastening sleeve 3 is provided with a guide portion 4, and the inner wall of the second pipe 2 is provided with a guide groove 5 around its own circumference, and the guide portion 4 is slidably embedded in the guide groove 5. Among them, the first pipe 1 and the second pipe 2 are both plastic parts, the fastening sleeve 3 is a deformable plastic part, and the first pipe 1 is threadedly connected with the second pipe 2.

[0029] The fastening sleeve of the present application is made of high-density polyethylene material, which has excellent deformation ability. Figure 3 As shown, the fastening sleeve 3 is initially in a contracted state; Figure 4 As shown, when a tubular material with a larger diameter is inserted into the fastening sleeve 3, the fastening sleeve 3 can be deformed to expand outward under the external support of the tubular material. After deformation, it has a restoring force to restore the contracted state. This restoring force can tightly wrap the tubular material to achieve the connection of the tubular material. Since the fastening sleeve 3 of the present application cannot effectively seal between pipes, the pipe joint of this embodiment can only be applied to pipes such as silicon core pipes for inserting cables. These pipes only need to be firmly connected and do not require relatively excellent sealing performance. In some other embodiments, a sealing ring can also be set in the second connecting pipe 2 to enhance the sealing performance.

[0030] When connecting the pipes, it is only necessary to insert the pipes into the fastening sleeve 3. The outer diameter of the pipe is larger than the inner diameter of the fastening sleeve 3 in the contracted state. After the pipe is inserted into the fastening sleeve 3, the fastening sleeve 3 is stretched open by the pipe and tightly locks the pipe under the action of its own deformation and contraction force. At the same time, the pipe wall of the second connecting pipe 2 can resist the fastening sleeve 3 to assist the fastening sleeve 3 in fastening the pipe, thereby realizing the rapid connection between the pipe and the second connecting pipe 2, which greatly reduces the difficulty of connecting the pipes and improves the laying efficiency of the pipes. At the same time, during the expansion and contraction process of the fastening sleeve 3, the guide part 4 can slide in the guide groove 5 to realize the expansion and contraction guidance of the fastening sleeve 3, thereby preventing the fastening sleeve 3 from deviating during the expansion and contraction process and affecting its fastening effect on the pipe.

[0031] In this embodiment, combined with Figure 5-6 As shown, the side of the fastening sleeve 3 has a first opening 6, and the first opening 6 can be relatively opened or closed during the expansion and contraction process of the fastening sleeve 3. When the fastening sleeve 3 is in a contracted state, the first opening 6 is closed; when the pipe is inserted into the fastening sleeve 3, the fastening sleeve 3 expands, and the first opening 6 is opened at this time. The opened first opening 6 can effectively increase the expansion and contraction range of the fastening sleeve 3, which is convenient for the relative insertion of the pipe and the fastening sleeve 3.

[0032] In this embodiment, combined with Figure 2 and Figure 5 As shown, the guide portion 4 is annular and is arranged around the circumference of the fastening sleeve 3. The guide portion 4 is clearance-matched with the guide groove 5, which can effectively improve the relative limiting effect between the guide groove 5 and the guide portion 4, and further avoid the displacement of the fastening sleeve 3 during the expansion and contraction process; at the same time, the clearance-matched guide portion 4 and the guide groove 5 can move relatively along the depth direction of the guide groove 5 when the fastening sleeve 3 expands and contracts, so as to avoid the interference of the expansion and contraction of the fastening sleeve 3 caused by excessive tight fit between the two.

[0033] Combination Figure 5 As shown, a second opening 9 is provided on the side of the guide portion 4 , and the projection of the second opening 9 on the fastening sleeve 3 coincides with the first opening 6 , so that interference of the expansion and contraction of the fastening sleeve 3 by the guide portion 4 can be avoided.

[0034] In this embodiment, combined with Figure 1-6 As shown, the inner wall of the fastening sleeve 3 is provided with a plurality of stop blocks 7, and the plurality of stop blocks 7 are arranged in a circular array around the circumference of the fastening sleeve 3. The stop blocks 7 are truncated cone-shaped and have arc-shaped protective surfaces at their ends. The stop blocks 7 can effectively increase the friction between the fastening sleeve 3 and the pipe, thereby increasing the connection strength between the pipe joint and the pipe; and the arc-shaped protective surface will not cause damage to the pipe when it is inserted.

[0035] In this embodiment, the end of the fastening sleeve 3 close to the pipe opening of the second pipe 2 is provided with three circumferentially spaced grooves 8. The circumferential grooves 8 enable the fastening sleeve 3 to complete the expansion and contraction process more smoothly, so as to facilitate the insertion of the pipe in the fastening sleeve 3.

[0036] Example 2: See Figure 7-8 As shown, a pipe structure is shown, which includes a plurality of coaxially extending pipe bodies 100, and a pipe joint in Example 1 is installed between each two adjacent pipe bodies 100.

[0037] In this way, when laying the pipe structure, multiple sections of pipe body 100 can be laid in advance, and then the multiple sections of pipe body 100 can be quickly connected through pipe joints without the need to assemble the pipe structure in advance. This not only facilitates the transportation and storage of the pipe structure, but also improves the laying efficiency of the pipe structure.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pipe joint, comprising a first pipe (1), and two second pipes (2) coaxially arranged at two ends of the first pipe (1), characterized in that: Each of the second connecting pipes (2) is coaxially provided with an expandable and contractible fastening sleeve (3), the side of the fastening sleeve (3) having a first opening (6), the first opening (6) being relatively opened or closed during the expansion and contraction process of the fastening sleeve (3), and the end of the fastening sleeve (3) having at least one circumferentially disposed therein with at least one clearance groove (8); The outer wall of the fastening sleeve (3) is provided with a guide portion (4), the guide portion (4) is annular and is arranged around the circumference of the fastening sleeve (3), the inner wall of the second connecting pipe (2) is provided with a guide groove (5) around its own circumference, the guide portion (4) is slidably embedded in the guide groove (5) and is loosely matched with the guide groove (5), the side of the guide portion (4) has a second opening (9), and the projection of the second opening (9) on the fastening sleeve (3) coincides with the first opening (6); The inner wall of the fastening sleeve (3) is provided with a plurality of limit blocks (7), the plurality of limit blocks (7) are arranged in a circular array around the circumference of the fastening sleeve (3), the limit blocks (7) are truncated cone-shaped and have arc-shaped protective surfaces at their ends.

2. A tubular structure, comprising a plurality of coaxially extending tubular bodies (100), characterized in that: A pipe joint as claimed in claim 1 is respectively installed between each two adjacent sections of the pipe body (100).

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