Plug-in pipe connection structure

Abstract

This utility model relates to a plug-in type pipe connection structure, including a pipe fitting with multiple interfaces, each corresponding to a pipe. The interfaces are connected by a channel. A limiting circular hole with a diameter larger than the channel diameter is provided on the inner wall of the interface end. A limiting groove with a limiting spring is provided on the inner wall of the limiting circular hole. A threaded hole with a screw is provided radially on the outer wall of the pipe fitting corresponding to the limiting groove. A spring with a locking groove is provided on the threaded hole. The outer wall of the pipe has a locking groove with a locking spring. The limiting spring has an opening for the spring to pass through. The pipe is inserted into the channel through the limiting circular hole, and the spring enters through the opening of the limiting spring. The inner end of the limiting circular hole provides inner limiting to the limiting spring. By rotating the pipe and the spring, the opening on the limiting spring is misaligned, achieving outer limiting of the spring by the limiting spring. This design has advantages such as reasonable structural design, simple pipe connection operation, and reliable pipe connection.

Description

Technical fields:

[0001] This utility model relates to the field of pipe connection technology, specifically to a plug-in type pipe connection structure. Background technology:

[0002] Pipe connections are an unavoidable operation during pipe laying. Current technology typically requires pipe fittings, such as two-way fittings and three-way fittings, for pipe connections. Pipe connections serve two main purposes: first, to connect the pipe and fitting together to prevent detachment; and second, to achieve a sealed connection to prevent leakage.

[0003] To achieve rapid and reliable connections between pipes and fittings, our company has continuously developed several pipe connection technologies, such as fire-fighting pipe installation systems and construction methods (authorization announcement number: CN112370708B), self-sealing structures and connection devices for large-diameter pipe connections (authorization announcement number: CN222597050U), self-sealing pipe connection devices (authorization announcement number: CN222597051U), and double-spring locking structures, pipe connection devices, and disassembly / removal methods (application publication number: CN119491963A). The development and application of these pipe connection technologies have improved the efficiency of pipe connections. Among them, the double-spring locking structure has significant advantages compared to previous pipe connection methods; however, in subsequent practical applications, areas for further optimization and improvement have been identified. Specifically, during on-site installation, spring B requires tools and force to push into the groove B, which undoubtedly affects the efficiency of the pipe connection. Therefore, it is necessary to further improve and optimize the pipe connection structure based on existing methods to further enhance pipe connection efficiency.

[0004] It should be noted that the above content falls within the inventor's technical knowledge and does not necessarily constitute prior art. Utility model content:

[0005] The purpose of this utility model is to solve the problems existing in the prior art and provide a plug-in type pipe connection structure, which has the advantages of reasonable structural design, simple pipe connection operation and reliable pipe connection.

[0006] This utility model achieves the above objectives by adopting the following technical solutions:

[0007] A plug-in type pipe connection structure includes a pipe fitting with multiple interfaces, each corresponding to a pipe. All interfaces are connected through a channel. A limiting circular hole with a diameter larger than the channel diameter is provided on the inner wall of each interface end. A limiting groove with a limiting spring is provided on the inner wall of the limiting circular hole. A threaded hole with a screw is provided radially on the outer wall of the pipe fitting corresponding to the limiting groove. A spring is provided on the outer wall of the pipe. An opening for the spring to pass through is provided on the outer wall of the pipe. The pipe passes through the limiting circular hole and is inserted into the channel. The spring enters through the opening of the limiting spring. The inner end of the limiting circular hole provides inner limiting to the limiting spring. By rotating the pipe and the spring, the opening on the limiting spring is misaligned, allowing the limiting spring to provide outer limiting to the spring.

[0008] The central angle of the limiting snap ring is α, and the central angle of the snap ring is β, where 340-α < β < 360-α.

[0009] The central angle of the limiting snap ring is less than 180°; the central angle of the snap ring is greater than 180°.

[0010] The inner diameter of the limiting snap ring is smaller than the diameter of the limiting hole, but greater than or equal to the channel diameter; the outer diameter of the snap ring is smaller than or equal to the diameter of the limiting hole, but greater than the inner diameter of the limiting snap ring.

[0011] The inner wall of the pipe fitting is provided with a sealing groove, and a sealing ring is provided on the sealing groove.

[0012] The present invention, by adopting the above-described structure, can bring the following beneficial effects:

[0013] By designing limiting holes and limiting snap rings on the pipe fittings and snap rings on the pipe, the snap rings are inserted using the opening on the limiting snap rings. Then, by rotating the pipe and the snap rings on it, the snap rings and the openings are misaligned. This allows the inner end face of the limiting hole to limit the snap rings from the inside, and the limiting snap rings to limit the snap rings from the outside. The two work together to limit the snap rings, thus achieving a fast and reliable connection between the pipe and the fittings. Attached image description:

[0014] Figure 1 This is a schematic diagram of the plug-in type pipe connection structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the pipe fitting of this utility model;

[0016] Figure 3 This is a perspective view of the pipe fitting of this utility model;

[0017] Figure 4A schematic diagram of the structure for installing a sealing ring and a limiting snap ring on a solid pipe fitting of this utility model;

[0018] Figure 5 This is a schematic diagram of the pipe clamping spring structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the limiting snap ring of this utility model;

[0020] Figure 7 This is a schematic diagram of the structure of the snap ring of this utility model;

[0021] Figure 8 This is a schematic diagram of the structure of this utility model, which uses a rotating pipe and a retaining spring for limiting the position.

[0022] Figure 9 This is a schematic diagram of the pipe fitting of this utility model connected to two pipes respectively;

[0023] In the diagram, 1 is a pipe fitting, 2 is an interface, 3 is a pipe, 4 is a channel, 5 is a limiting hole, 6 is a limiting groove, 7 is a limiting snap ring, 8 is a threaded hole, 9 is a screw, 10 is a groove, 11 is a snap ring, 12 is an opening, 13 is an inner end face, 14 is a sealing groove, and 15 is a sealing ring. Detailed implementation method:

[0024] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0026] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0027] Furthermore, the terms “inner side,” “outer side,” “radial,” “axial,” etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the location of the indicated technical feature.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "provided with," "set up," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical 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 according to the specific circumstances.

[0029] like Figure 1-9 As shown, the plug-in type pipe connection structure includes a pipe fitting 1, which has multiple interfaces 2, each corresponding to a pipe 3. All interfaces 2 are connected through a channel 4. A limiting circular hole 5 is provided on the inner wall of the end of each interface 2. The diameter of the limiting circular hole 5 is larger than the diameter of the channel 4. A limiting groove 6 is provided on the inner wall of the limiting circular hole 5, and a limiting spring 7 is provided on the limiting groove 6. A threaded hole 8 is radially provided on the outer wall of the pipe fitting 1 corresponding to the position of the limiting groove 6, and a screw 9 is provided on the threaded hole 8. The outer wall of the pipe 3 is provided with a groove 10, and a retaining spring 11 is provided on the groove 10. The retaining spring is provided with an opening 12 for the retaining spring to pass through. The pipe 3 passes through the retaining hole 5 and is inserted into the channel 3. The retaining spring 11 enters through the opening of the retaining spring. The inner end face 13 of the retaining hole 5 limits the retaining spring 7 from the inside. By rotating the pipe 3 and the retaining spring 11 on it, the retaining spring 11 is misaligned with the opening 12 on the retaining spring 7, so that the retaining spring 7 limits the retaining spring 11 from the outside. By designing a limiting circular hole 5 and a limiting snap ring 7 on the pipe fitting 1, and a snap ring 11 on the pipe 3, the snap ring 11 is inserted through the opening 12 on the limiting snap ring 7. Then, by rotating the pipe 3 and the snap ring 11, the snap ring 11 is misaligned with the opening 12. This achieves internal limiting of the snap ring 11 using the inner end face 13 of the limiting circular hole 5, and external limiting of the snap ring 11 using the limiting snap ring 7. The two work together to limit the snap ring 11, thus achieving a quick and reliable connection between the pipe 3 and the pipe fitting 1. Compared with existing technologies, the disassembly and assembly of the pipe 3 are more convenient and faster, and the connection is reliable after installation.

[0030] The central angle of the limiting snap ring 7 is α, and the central angle of the snap ring 11 is β, where 340-α < β < 360-α. In practical applications, the central angle of the snap ring 11 should be as close as possible to 360-α, which helps to improve the limiting effect of the limiting snap ring 7. However, it should not be exactly 360-α, because if they are equal, it will be difficult for the snap ring 11 and the opening 12 of the limiting snap ring 7 to align when the pipe 3 is inserted, thus preventing the snap ring 11 from passing through smoothly.

[0031] The central angle of the limiting snap ring 7 is less than 180°; the central angle of the snap ring 11 is greater than 180°. This helps to improve the reliability of the connection.

[0032] The inner diameter of the limiting snap ring 4 is smaller than the diameter of the limiting hole 5, but greater than or equal to the diameter of the channel 3; the outer diameter of the snap ring 11 is smaller than or equal to the diameter of the limiting hole 5, but greater than the inner diameter of the limiting snap ring 7. This ensures that the snap ring 11 is effectively limited, thereby ensuring a reliable connection between the pipe 3 and the fitting 1.

[0033] The inner wall of the pipe fitting 1 is provided with a sealing groove 14, and a sealing ring 15 is provided on the sealing groove 14. This achieves a sealed connection between the pipe 3 and the pipe fitting 1.

[0034] Instructions for use of the plug-in type pipe connection structure in this application:

[0035] In practical applications, fitting 1 can be a two-way fitting (i.e., with two ports), a three-way fitting (with three ports), or a four-way fitting (with four ports). The connection method between pipe 3 and port 2 is the same.

[0036] First, install the sealing ring 15 on the sealing groove 14, install the limiting spring 7 on the limiting slot 6, and install the spring 11 on the slot 10 of the pipe 3 (these can also be prefabricated and do not need to be installed on site); then align the spring 11 with the opening 12 on the limiting spring 7, insert the pipe 3 into the interface 2, and insert the pipe 3 into the channel 4 through the limiting hole 5. The spring 11 enters through the opening 12 on the limiting spring 7 and is internally limited by the inner end face 13 on the limiting hole 5; next, rotate the pipe 3 and the spring 11 on it, so that the spring 11 is misaligned with the opening 12, and the limiting spring 7 begins to externally limit the spring 11; finally, tighten the screw 9, and the front end of the screw 9 presses against the pipe 3 to lock it and prevent the pipe 3 from rotating.

[0037] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0038] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A plug-in type pipe connection structure, characterized in that, The system includes a pipe fitting with multiple interfaces, each corresponding to a pipe. All interfaces are connected via a channel. Each interface has a limiting circular hole on its inner wall, the diameter of which is larger than the channel diameter. A limiting groove is located on the inner wall of the limiting circular hole, and a limiting spring is mounted on the limiting groove. A threaded hole is radially located on the outer wall of the pipe fitting corresponding to the limiting groove, and a screw is mounted on the threaded hole. The pipe has a groove on its outer wall, and a spring is mounted on the groove. The limiting spring has an opening through which it passes. The pipe passes through the limiting circular hole and is inserted into the channel. The spring enters through the opening of the limiting spring. The inner end of the limiting circular hole provides internal limiting to the limiting spring. By rotating the pipe and the spring on it, the opening on the limiting spring is misaligned, allowing the limiting spring to provide external limiting to the spring.

2. The plug-in type pipe connection structure according to claim 1, characterized in that, The central angle of the limiting snap ring is α, and the central angle of the snap ring is β, where 340-α < β < 360-α.

3. The plug-in type pipe connection structure according to claim 2, characterized in that, The central angle of the limiting snap ring is less than 180°; the central angle of the snap ring is greater than 180°.

4. The plug-in type pipe connection structure according to claim 3, characterized in that, The inner diameter of the limiting snap ring is smaller than the diameter of the limiting hole, but greater than or equal to the channel diameter; the outer diameter of the snap ring is smaller than or equal to the diameter of the limiting hole, but greater than the inner diameter of the limiting snap ring.

5. The plug-in type pipe connection structure according to claim 4, characterized in that, The inner wall of the pipe fitting is provided with a sealing groove, and a sealing ring is provided on the sealing groove.

Images