Pipeline connecting structure

Abstract

The utility model discloses a pipeline connecting structure which comprises a pipeline I and a pipeline II, annular flanges are arranged on the outer sides of the pipeline I and the pipeline II; the fixing assembly comprises a connecting pipe body, an inner ring connecting piece, an outer ring connecting piece and a locking piece; an inner ring connecting piece and an outer ring connecting piece are sequentially and coaxially connected to the ends of the two sides of the connecting pipe body. Annular grooves are formed in the connected end faces of the inner ring connecting piece and the outer ring connecting piece, and the two annular grooves jointly form a locking structure matched with an annular flange on a pipeline. The outer ring connecting piece is provided with a connecting part with a through hole; the locking piece sequentially penetrates through the through holes of the outer ring connecting pieces on the two sides to lock the outer ring connecting pieces on the two sides. And the annular flange on the outer side of the pipeline is embedded with the double annular grooves of the connecting piece, so that mechanical self-locking is formed, axial displacement is avoided, and the pull-off resistance is improved. The layered assembly structure of the connecting pipe body and the inner and outer ring connecting pieces realizes quick disassembly and assembly, keeps coaxiality, reduces the installation complexity, enables the connection operation to be simple and quick, and enables the connection to be firm and firm.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection technology, specifically a pipeline connection structure. Background Technology

[0002] There are many connection methods available for connecting compressed air pipelines, including threaded connections, nut-internal fitting connections, and clamp-on connections. However, each method has its drawbacks due to various reasons. For example, a loose connection between the air pipe and the fitting can easily lead to pipe detachment and air leakage. Currently, the most widely used method is the clamp-on connection. This connection method is simple to install and easy to disassemble and maintain. Its disadvantage is its limited functionality; it cannot be used for both positive and negative pressure pipelines and can only be installed on convex pipe types, limiting its options.

[0003] To address this, those skilled in the art have proposed a pipe connection structure. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model proposes a pipe connection structure that is simple and compact, has few parts that are not easily lost, is easy and quick to connect, and provides a secure and reliable connection with good sealing performance.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A pipe connection structure, comprising:

[0007] Pipe 1 and pipe 2 are provided with annular flanges on their outer sides;

[0008] The fixing assembly includes a connecting pipe body, an inner ring connector, an outer ring connector, and a locking device. The inner ring connector and the outer ring connector are coaxially connected to each other at both ends of the connecting pipe body. The end faces of the inner ring connector and the outer ring connector are each provided with an annular groove, and the two annular grooves together form a locking structure that engages with an annular flange on the pipe. The outer ring connector has a connecting portion with a through hole. The locking device passes through the through holes of the two outer ring connectors in sequence, locking the two outer ring connectors in place.

[0009] Furthermore, the connection point where the connecting pipe body connects to the inner ring connector is provided with an inner conical surface, and the connection point of the inner ring connector is provided with an outer conical surface that mates with the inner conical surface.

[0010] Furthermore, the inner side of the connecting tube is provided with an arc-shaped protrusion.

[0011] Furthermore, a sealing element is provided between the connecting pipe body and the inner ring connector.

[0012] Furthermore, the outer ring connector is composed of outer ring component one and outer ring component two; wherein, outer ring component one and outer ring component two are provided with assembly positioning points, and assembly positioning grooves are provided at the positions corresponding to the assembly positioning points of outer ring component one and outer ring component two.

[0013] Furthermore, the locking device is a rod with external threads at both ends, the external threads of the rod are provided with nuts, and a washer is provided between the nut and the connecting part.

[0014] Furthermore, a spring is provided between the nut and the washer.

[0015] Compared with existing technologies, it has the following advantages:

[0016] 1. A pipe connection structure is provided, including a first pipe, a second pipe, and a fixing assembly connecting the two; the fixing assembly includes a connecting pipe body, an inner ring connector, an outer ring connector, and a locking device. Mechanical self-locking is formed by the engagement of the outer annular flange of the pipe with the double annular grooves of the connector, preventing axial displacement and improving pull-out resistance. The layered assembly structure of the connecting pipe body and the inner and outer ring connectors allows for quick assembly and disassembly while maintaining coaxiality, reducing installation complexity. The locking device bidirectionally penetrates the outer ring connectors on both sides, locking them securely, making the connection operation simple, quick, and reliably strong.

[0017] 2. The connection point between the connecting pipe body and the inner ring connector has an inner conical surface, and the connection point of the inner ring connector has an outer conical surface that mates with the inner conical surface. The conical surface mating structure provides radial positioning compensation capability, keeping the contact surfaces of the two in close contact.

[0018] 3. The inner side of the connecting pipe is provided with an arc-shaped protrusion, which forms a limiting structure for the insertion depth of pipe one and pipe two, restricting the insertion depth of the pipe and maintaining the consistency of the insertion depth of the pipes on both sides; in addition, it enables the annular flange on the pipe to quickly and accurately engage with the locking structure of the two annular grooves.

[0019] 4. A seal is provided between the connecting pipe body and the inner ring connector to prevent fluid or solid particles from leaking between adjacent mating surfaces and to prevent external impurities such as dust and moisture from entering. Attached Figure Description

[0020] Figure 1 A three-dimensional structural diagram of the pipeline connection structure;

[0021] Figure 2 This is a sectional view of the pipe connection structure.

[0022] Figure 3 for Figure 2 Enlarged view of the central section;

[0023] Figure 4 Exploded structural diagrams of the main components;

[0024] Figure 5 Structural diagrams of outer ring component one and outer ring component two;

[0025] Figure 6 Structural diagrams of outer ring component one and outer ring component two;

[0026] Figure 7 This is an assembly cross-sectional view showing the assembly positioning points of outer ring component one and outer ring component two.

[0027] In the diagram: 1. Pipe 1; 2. Pipe 2; 3. Fixing component; 4. Annular flange; 5. Annular groove; 6. Seal; 30. Connecting pipe body; 31. Inner ring connector; 32. Outer ring connector; 32A. Outer ring fitting 1; 32B. Outer ring fitting 2; 33. Locking fastener; 34. Nut; 35. Washer; 36. Spring; 300. Inner conical surface; 301. Arc-shaped protrusion; 310. Outer conical surface; 320. Connecting part; 321. Assembly positioning point; 322. Assembly positioning groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-7 This utility model provides a technical solution: a pipe connection structure, comprising:

[0030] Pipe 1 and pipe 2 are provided with annular flange 4 on their outer sides.

[0031] The fixing component 3 includes a connecting pipe body 30, an inner ring connector 31, an outer ring connector 32, and a locking fastener 33. The inner ring connector 31 and the outer ring connector 32 are coaxially connected to both ends of the connecting pipe body 30 in sequence. The end faces of the inner ring connector 31 and the outer ring connector 32 are each provided with an annular groove 5. The two annular grooves 5 together form a locking structure that engages with the annular flange 4 on the pipe. The outer ring connector 32 has a connecting part 320 with a through hole. The locking fastener 33 passes through the through holes of the two outer ring connectors 32 in sequence, locking the two outer ring connectors 32. The engagement of the outer annular flange 4 of the pipe with the double annular grooves 5 of the connector forms a mechanical self-locking mechanism, preventing axial displacement and improving pull-out resistance. The layered assembly structure of the connecting pipe body 30 and the inner and outer ring connectors allows for quick assembly and disassembly while maintaining coaxiality, reducing installation complexity. The locking fastener 33 is bidirectionally connected to the outer ring connectors 32 on both sides, locking the outer ring connectors 32 on both sides, making the connection operation simple and quick, and the connection tight and reliable.

[0032] Please see Figure 2-3 The connection point between the connecting pipe body 30 and the inner ring connector 31 is provided with an inner conical surface 300, and the connection point of the inner ring connector 31 is provided with an outer conical surface 310 that mates with the inner conical surface 300. The conical surface mating structure provides radial positioning compensation capability, keeping the contact surfaces of the two in close contact.

[0033] An arc-shaped protrusion 301 is provided on the inner side of the connecting pipe body 30. The arc-shaped protrusion 301 forms a limiting structure for the insertion depth of pipe 1 and pipe 2, restricting the insertion depth of the pipes and maintaining the consistency of the insertion depth of the pipes on both sides; in addition, it enables the locking structure of the annular flange 4 on the pipe and the two annular grooves 5 to achieve quick and precise engagement.

[0034] A sealing element 6 is provided between the connecting pipe body 30 and the inner ring connector 31. This prevents fluid or solid particles from leaking between adjacent mating surfaces and prevents external impurities such as dust and moisture from entering.

[0035] Please see Figure 5-7 In this embodiment, the outer ring connector 32 is composed of two separate outer ring components: outer ring accessory 32A and outer ring accessory 32B. Both outer ring accessory 32A and outer ring accessory 32B are provided with assembly positioning points 321, and assembly positioning grooves 322 are provided at positions corresponding to the assembly positioning points 321. The positioning points 321 and assembly positioning grooves 322 on both components serve a positioning and anti-displacement function, preventing displacement under stress. In other embodiments, the outer ring connector 32 can also be a single integral structure.

[0036] Please see Figure 1-2The locking component 33 is a rod with external threads at both ends. A nut 34 is provided on the external threads of the rod, and a washer 35 is provided between the nut 34 and the connecting part 320. Through the combination of threaded rod + nut 34 + washer 35 locking method, the washer 35 provides continuous clamping force to prevent loosening between the components caused by vibration.

[0037] A spring 36 is provided between the nut 34 and the washer 35. Through the combination of threaded rod + nut 34 + spring 36 + washer 35, the nut 34 compresses the spring 36 to provide a continuous clamping force to the washer 35, preventing the components from loosening due to vibration. At the same time, the elastic buffering effect of the spring 36 can absorb vibration energy.

[0038] The pipe connection method specifically includes the following steps:

[0039] Step 1: Install the inner ring connector 31 to both sides of the connecting pipe body 30 through the conical surface fit, and install the sealing element 6 between the connecting pipe body 30 and the inner ring connector 31 to ensure that the sealing element 6 is pressed in place to form a sealing structure;

[0040] Step 2: Insert pipe 1 and pipe 2 into the connecting pipe body 30 from both sides. The insertion depth is controlled by the arc-shaped protrusion 301 limiting structure, and the outer annular flange 4 of the pipe contacts the annular groove 5 of the inner ring connector 31.

[0041] Step 3: Install the outer ring connector 32 to the rear side of the inner ring connector 31. The annular groove 5 on the outer ring connector 32 and the annular groove 5 on the inner ring connector 31 together form a locking structure that cooperates with the annular flange 4 on the pipe.

[0042] Step 4: Insert the locking fastener 33 through the connecting part 320 of the outer ring connectors 32 on both sides, and install the washer 35, spring 36 and nut 34 in sequence to lock the outer ring connectors 32 on both sides. The connection operation is simple and quick, and the connection is tight and reliable.

Claims

1. A pipe coupling structure characterized by, include: Pipe 1 (1) and pipe 2 (2) are provided with annular flanges (4) on their outer sides; The fixing component (3) includes a connecting pipe body (30), an inner ring connector (31), an outer ring connector (32), and a locking fastener (33); the inner ring connector (31) and the outer ring connector (32) are coaxially connected to the two ends of the connecting pipe body (30) in sequence; the end faces of the inner ring connector (31) and the outer ring connector (32) are provided with annular grooves (5), and the two annular grooves (5) together form a locking structure that cooperates with the annular flange (4) on the pipe; the outer ring connector (32) is provided with a connecting part (320) with a through hole; the locking fastener (33) passes through the through holes of the two outer ring connectors (32) in sequence to lock the two outer ring connectors (32).

2. The pipe coupling structure of claim 1, wherein The connection point where the connecting pipe body (30) connects to the inner ring connector (31) is provided with an inner conical surface (300), and the connection point of the inner ring connector (31) is provided with an outer conical surface (310) that cooperates with the inner conical surface (300).

3. The pipe coupling structure of claim 1, wherein The inner side of the connecting pipe body (30) is provided with an arc-shaped protrusion (301).

4. The pipe connection structure according to claim 1, characterized in that, A sealing element (6) is provided between the connecting pipe body (30) and the inner ring connector (31).

5. The pipe coupling structure of claim 1, wherein The outer ring connector (32) is composed of outer ring accessory one (32A) and outer ring accessory two (32B); wherein, outer ring accessory one (32A) and outer ring accessory two (32B) are provided with assembly positioning points (321), and outer ring accessory one (32A) and outer ring accessory two (32B) are provided with assembly positioning grooves (322) at positions corresponding to the assembly positioning points (321).

6. The pipe coupling structure of claim 1, wherein The locking fastener (33) is a rod with external threads at both ends. The external threads of the rod are provided with nuts (34), and a washer (35) is provided between the nut (34) and the connecting part (320).

7. The pipe coupling structure of claim 6, wherein A spring (36) is provided between the nut (34) and the washer (35).

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