Double-clamp-spring locking structure and pipeline connecting device
Through the design of the double-screw spring locking structure and O-type sealing ring, the problems of high cost and low efficiency of pipeline connection processing in the prior art are solved, and efficient and reliable pipeline connection and disassembly are achieved.
Patent Information
- Application Number
- CN202422874942.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-11-25
AI Technical Summary
The existing pipeline connection locking structure requires the processing of multiple threaded holes on the pipe fittings, resulting in increased processing time and cost and low construction efficiency.
The double-screw locking structure is adopted. By designing the limiting groove and the locking groove on the pipe fittings, a set screw is used to achieve the axial limit of the pipe, and self-sealing is achieved in combination with the O-ring, reducing the need for threaded connections.
It significantly reduces the processing cost and time of pipeline connections, improves construction efficiency, and achieves pipeline connections with good sealing effect and easy disassembly and assembly.
Smart Images
Figure CN223228050U_ABST
Abstract
Description
Technical field:
[0001] The utility model relates to the technical field of pipeline connection, in particular to a double-circlip locking structure and a pipeline connection device. Background technology:
[0002] Pipeline connections are often required during pipeline construction. In practical applications, it is usually necessary to use pipe fittings to connect two pipes in series. In order to ensure the sealing and reliability of the connection, it is necessary to design a sealing structure and a locking structure between the pipe fitting and the pipe. Regarding the locking structure, the prior art discloses a self-sealing pipe connection device (application publication number: CN118128983A). The document discloses a locking mechanism having a structure in which a groove A is designed on the inner wall of the pipe fitting and a groove B is designed on the outer wall of the pipe. A plurality of screws are set on the pipe fitting at positions corresponding to the groove A. A retaining ring is first installed in the groove A. After the pipe is inserted into the pipe fitting, a part of the retaining ring in the groove A is pushed into the groove B by the screw, thereby achieving a part of the retaining ring in the groove A and the other part in the groove B, thereby achieving the locking of the pipe fitting and the pipe. Compared with the previous threaded locking, this locking structure has the advantages of easy disassembly and assembly, flexible installation and relatively low processing cost. However, with the implementation and promotion of this technology, it was found that there are still areas that need further improvement. Since the above-mentioned locking structure needs to push a part of the retaining ring into the retaining groove B, it is necessary to provide a plurality of threaded holes on the pipe fitting at intervals along the circumferential direction, and install a screw on each threaded hole. In order to ensure the retaining ring is pushed into the pipe fitting, 4 screws are usually required. Although there is no technical difficulty in processing threaded holes, it is time-consuming and labor-intensive compared to processing circumferential grooves on pipe fittings. In particular, when processing multiple threaded holes in the circumferential direction, the position of the pipe fitting needs to be adjusted, which increases the overall processing time and processing cost of the pipe fitting. In addition, four screws need to be installed during construction, which undoubtedly further limits construction efficiency. Therefore, it is necessary to further optimize and improve the existing pipeline connection locking structure in order to further improve processing efficiency and installation efficiency.
[0003] It should be noted that the above content falls within the technical knowledge of the inventor and does not necessarily constitute prior art. Utility model content:
[0004] The purpose of the utility model is to solve the problems existing in the prior art, provide a double-circlip locking structure and a pipe connection device, subvert the existing single-circlip design concept, and innovatively design a double-circlip locking structure. With the double-circlip structure, only one screw is needed to achieve pipe locking connection. It has the advantages of reasonable structural design, high processing efficiency, convenient and efficient installation, and reliable locking.
[0005] The utility model achieves the above-mentioned purpose by adopting the following technical solutions:
[0006] A double-circlip locking structure includes a pipe fitting, which is provided with multiple interfaces connected to each other, each of which corresponds to a pipe, a groove A is provided on the outer wall of the pipe along the circumferential direction, a clamping spring A is provided on the groove A, a limiting groove is provided on the inner wall of the interface along the circumferential direction, the limiting groove limits the inward movement of the clamping spring A, a groove B is provided on the inner wall of the interface along the circumferential direction, and the groove B is located on the outside of the groove A, a clamping spring B is provided on the groove B, the clamping spring B limits the outward movement of the clamping spring A, a notch is provided on the clamping spring B, a threaded hole connected to the groove B is provided on the threaded hole, and a set screw is provided on the threaded hole, and the set screw passes through the notch and acts on the pipe.
[0007] The pipe is provided with two interfaces, three interfaces or four interfaces.
[0008] A chamfered angle is provided on the inner wall of the interface from the end to the card slot B.
[0009] The retaining spring A is designed to be C-shaped.
[0010] The cross section of the retaining spring A is designed to be circular, the corresponding cross section of the retaining groove A is designed to be arc-shaped, and the cross section of the limiting groove is designed to be arc-shaped.
[0011] The cross section of the clamping spring B is designed to be circular, and the corresponding cross section of the clamping slot B is designed to be arc-shaped.
[0012] The card slot B is designed to be connected to the card slot A.
[0013] The pipeline connection device includes the double spring locking structure as described above, a sealing groove is provided on the inner wall of the interface along the circumferential direction, the sealing groove is located on the inner side of the limiting groove, and a sealing ring is provided on the sealing groove, and the sealing ring is sealed under the action of the liquid passing through the pipeline.
[0014] The sealing ring is designed as an O-ring, the inner diameter of the O-ring is smaller than the outer diameter of the pipe, and the sealing groove includes an integrally formed limiting portion and an inclined portion, the limiting portion is located on the inner side, the inclined portion is located on the outer side, and the depth of the inclined portion gradually decreases from the inside to the outside. The limiting portion is used to prevent the O-ring from moving inward, and the liquid in the pipe drives the O-ring to move outward and increases the extrusion force of the O-ring under the action of the inclined portion to seal.
[0015] The utility model adopts the above structure, which can bring the following beneficial effects:
[0016] (1) Subvert the existing single-circlip locking design concept and innovatively design a double-circlip locking structure. Install the circlip A on the pipe to limit the circlip A. Then design a limiting groove on the pipe fitting to limit the inner side of the circlip A. By designing the slot B and the circlip B on the pipe fitting, the outer side of the circlip A can be limited. In this way, the axial position of the pipe can be limited without threaded connection. It is easy to disassemble and assemble, and the position is firm and reliable. (2) In order to prevent the pipe from rotating, a set screw is designed to lock the pipe. Only one threaded hole is required for the entire locking structure, which significantly reduces processing costs and improves processing efficiency and disassembly efficiency. (3) The set screw cooperates with the notch on the circlip B, which not only locks the pipe, but also helps to quickly remove the circlip B from the slot B during disassembly, further improving disassembly efficiency. Description of the drawings:
[0017] Figure 1 This is a cross-sectional view of the double-circlip locking structure of the utility model;
[0018] Figure 2 This is a front view of the double-circlip locking structure of the utility model;
[0019] Figure 3 for Figure 2 AA section view in the figure;
[0020] Figure 4 This is a top view of the double-circlip locking structure of the utility model;
[0021] Figure 5 for Figure 4 BB section view in the figure;
[0022] Figure 6 This is a schematic diagram of the structure of the pipe fitting of the utility model;
[0023] Figure 7 This is a schematic diagram of the structure of the pipeline of the utility model;
[0024] Figure 8 This is a schematic diagram of the structure of the retaining spring A of the present utility model;
[0025] Figure 9 This is a schematic diagram of the structure of the retaining spring B of the present invention;
[0026] Figure 10 This is a cross-sectional view of the pipeline connecting device of the utility model;
[0027] Figure 11 This is a schematic diagram of the pipe structure in the pipeline connecting device of the utility model;
[0028] Figure 12 This is a three-dimensional diagram of the pipeline connection device of the utility model;
[0029] Figure 13This is an exploded view of the pipeline connection device of the utility model;
[0030] Figure 14 This is a schematic diagram of the structure of a pipe connection device in which two interfaces are arranged at an angle of 180°;
[0031] Figure 15 This is a schematic diagram of the structure of a pipe connection device using two interfaces arranged at 90 degrees in the present invention;
[0032] Figure 16 This is a schematic diagram of the structure of a pipe connection device using three interfaces in the utility model;
[0033] Figure 17 This is a schematic diagram of the structure of a pipe connection device using four interfaces in the utility model;
[0034] Figure 18 This is a schematic diagram of the structure of the pipeline installation of the utility model;
[0035] Figure 19 This is a schematic diagram of the structure of the pipeline disassembly of the utility model;
[0036] In the figure, 1, pipe fitting, 2, interface, 3, pipe, 4, slot A, 5, retaining ring A, 6, limit groove, 7, chamfer, 8, slot B, 9, retaining ring B, 10, notch, 11, threaded hole, 12, set screw, 13, sealing groove, 1301, limit part, 1302, inclined part, 14, sealing ring, 15, end. Specific implementation method:
[0037] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.
[0038] In the following description, many specific details are set forth to facilitate 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.
[0039] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.
[0040] Furthermore, the terms “inside”, “outside”, “radial”, “axial”, etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the position of the indicated technical features.
[0041] In this utility model, unless otherwise specified or limited, the terms "provided with," "arranged," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integrated connections; mechanical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.
[0042] like Figure 1-19 As shown, a double-circlip locking structure includes a pipe fitting 1, which is provided with a plurality of interfaces 2 connected to each other, each of the interfaces 2 corresponding to a pipe 3, a groove A4 is provided on the outer wall of the pipe 3 along the circumferential direction, and a circumferential spring A5 is provided on the groove A4, a limiting groove 6 is provided on the inner wall of the interface 2 along the circumferential direction, and the limiting groove 6 limits the inward movement of the circumferential spring A5, a groove B8 is provided on the inner wall of the interface 2 along the circumferential direction, and the groove B8 is located outside the groove A4, a circumferential spring B9 is provided on the groove B8, the circumferential spring B9 limits the outward movement of the circumferential spring A5, and a notch 10 is provided on the circumferential spring B9, a threaded hole 11 connected to the groove B8 is provided on the threaded hole 11, and a set screw 12 is provided on the threaded hole 11, and the set screw 12 passes through the notch 10 and acts on the pipe 3. The technical solution of this application overturns the existing single-circlip locking design concept and innovatively designs a dual-circlip locking structure. By installing the circlip A5 on the pipe 3, the pipe 3 can be limited by simply limiting the circlip A5. Then, a limiting groove 6 is designed on the pipe fitting 1 to limit the inner side of the circlip A5. By designing a slot B8 and a circlip B9 on the pipe fitting 1 to limit the outer side of the circlip A5, the pipe 3 can be axially limited without a threaded connection. Furthermore, the axial limitation of the pipe 3 is convenient for assembly and disassembly, and the limitation is firm and reliable. To prevent the pipe 3 from rotating, a set screw 12 is designed to lock the pipe 3. Only one threaded hole 11 is required for the entire locking structure, thereby significantly reducing processing costs and improving processing efficiency and assembly and disassembly efficiency. The set screw 12, in conjunction with the notch 10 on the circlip B9, not only locks the pipe 3 but also helps to quickly remove the circlip B9 from the slot B8 during disassembly, further improving disassembly efficiency.
[0043] The pipe 1 is provided with two interfaces 2 (such as Figure 14 and 15 As shown) or three interfaces 2 (as Figure 16 As shown) or four interfaces 2 (as Figure 17 When two interfaces 2 are designed on a pipe fitting, a two-way connection (also called a two-way pipe fitting or a two-way joint) is achieved. When three interfaces 3 are designed on a pipe fitting, a three-way connection (also called a three-way pipe fitting or a three-way joint) is achieved. When four interfaces 2 are designed on a pipe fitting, a four-way connection (also called a four-way pipe fitting or a four-way joint) is achieved.
[0044] A chamfer 7 is provided on the inner wall of the interface 2 from the end to the clamping groove B8 to facilitate guiding the clamping spring B9 into the clamping groove B8.
[0045] The retaining spring A5 is designed to be C-shaped. Designing the retaining spring A5 into a C-shape allows the retaining spring A5 to be directly clamped into the retaining groove A4 by force without the need for auxiliary tools, which improves installation efficiency. The central angle of the retaining spring A5 is designed to be 180° to 300°. It should be noted that the larger the central angle, the more difficult it is to clamp the retaining spring A5 into the retaining groove A4 with force, and of course the clamping is more secure. Therefore, in actual applications, the design of the central angle needs to take into account both the convenience of clamping and the security of the clamping. For reference, the central angle of the retaining spring A5 can be designed to be 225°.
[0046] The cross section of the clamping spring A5 is designed to be circular, the cross section of the corresponding clamping groove A4 is designed to be arc-shaped, and the cross section of the limiting groove 6 is designed to be arc-shaped.
[0047] The cross section of the retaining spring B9 is designed to be circular, and the corresponding cross section of the retaining groove B8 is designed to be arc-shaped.
[0048] The card slot B8 is connected to the card slot A4 and adopts a circular and arc design, which has the advantages of easy disassembly and assembly, while also taking into account the firmness of the card connection.
[0049] The pipeline connection device includes the double spring locking structure as described above, and a sealing groove 13 is provided on the inner wall of the interface 2 along the circumferential direction. The sealing groove 13 is located on the inner side of the limiting groove 6. A sealing ring 14 is provided on the sealing groove 13, and the sealing ring 14 is sealed under the action of the liquid passing through the pipeline 3.
[0050] The sealing ring 14 is designed as an O-ring, the inner diameter of which is smaller than the outer diameter of the pipe 3. The sealing groove 13 includes an integrally formed limiting portion 1301 and an inclined portion 1302. The limiting portion 1301 is located on the inner side, and the inclined portion 1302 is located on the outer side. The depth of the inclined portion 1302 gradually decreases from the inside to the outside. The limiting portion 1301 is used to prevent the O-ring from moving inward. The liquid in the pipe 3 drives the O-ring to move outward and, under the action of the inclined portion 1302, increases the squeezing force of the O-ring to seal. The liquid introduced into the pipe 3 is used as the driving force for driving the sealing ring 14 to seal, and cooperates with the inclined portion on the sealing groove 13 to squeeze and seal the sealing ring, thus achieving self-sealing of the pipe. This sealing structure is not only simple and practical, with good sealing effect, but also easy to assemble and disassemble and has low cost.
[0051] like Figure 18 As shown, the pipeline installation process of this application is as follows:
[0052] S1. Install the O-ring on the sealing groove 13, install the retaining ring A5 on the retaining groove A4, and put the retaining ring B9 on the pipe 3;
[0053] S2. Adjust the pipe 3 so that the opening of the upper retaining ring A5 faces the threaded hole 11, and insert the pipe 3 into the interface 2 of the pipe fitting 1 until the retaining ring A5 contacts the limiting groove 6 to limit the position;
[0054] S3. Adjust the position of the retaining ring B9 so that the notch 10 on it faces the threaded hole 11, and then install the retaining ring B9 on the retaining groove B8 under the guidance of the chamfer 7;
[0055] S4. Install the set screw 12 in the threaded hole 11 and insert it through the notch 10 on the retaining ring B9 to tighten the pipe 3, completing the connection of pipe 3. After the liquid (usually water) is introduced into the pipe 3, the liquid is pressurized, which drives the O-ring outward. Under the combined action of the pipe 3 and the inclined portion 1302 on the sealing groove 13, the O-ring is squeezed (the further the O-ring moves outward, the greater the squeezing force and the better the sealing effect), thereby squeezing and sealing the gap between the pipe fitting 1 and the pipe 2.
[0056] like Figure 19 As shown, the pipeline disassembly process of this application is as follows:
[0057] First, rotate the set screw 12 in the opposite direction to loosen the pipe 3, but do not remove the set screw 12; secondly, use the notch 10 on the retaining ring B9 to rotate it (you can use a simple tool such as a screwdriver or hook to move it) so that the notch 10 on it is misaligned with the threaded hole 11; rotate the set screw 12 forward again to tighten it against the end 15 of the retaining ring B9 and push the end 15 out of the slot B8; then remove the retaining ring B9 from the slot B8 through the pushed-out end 15 (specifically, you can use a screwdriver to act on the pushed-out end 15 to pick out the retaining ring B; or use pliers to pinch the pushed-out end and pull it out); finally, pull the pipe 3 out of the interface 2 to complete the disassembly. Based on the pipeline self-sealing structure and double retaining ring locking structure of the present application, the pipeline connection and disassembly operations are simpler, the connection and disassembly efficiency is higher, and it helps to improve the processing efficiency of the pipe fittings 1 and the pipe 3 and reduce the processing cost. After the pipeline is connected, the sealing effect and the locking effect are good.
[0058] The above specific implementation methods cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or transformation made to the implementation methods of the present utility model falls within the protection scope of the present utility model.
[0059] Anything not described in detail in the present invention is well known to those skilled in the art.
Claims
1. A double-circlip locking structure, comprising a pipe fitting, wherein the pipe fitting is provided with a plurality of interconnected interfaces, each of which is connected to a pipe, characterized in that: A groove A is provided on the outer wall of the pipe along the circumferential direction, and a retaining spring A is provided on the groove A. A limiting groove is provided on the inner wall of the interface along the circumferential direction, and the limiting groove limits the retaining spring A from moving inward. A groove B is provided on the inner wall of the interface along the circumferential direction, and the groove B is located on the outside of the groove A. A retaining spring B is provided on the groove B, and the retaining spring B limits the retaining spring A from moving outward. A notch is provided on the retaining spring B, and a threaded hole connected to the groove B is provided on the pipe fitting, and a set screw is provided on the threaded hole, and the set screw passes through the notch and acts on the pipe.
2. The double-circlip locking structure according to claim 1, characterized in that: The pipe is provided with two interfaces, three interfaces or four interfaces.
3. The double-circlip locking structure according to claim 1 or 2, characterized in that: A chamfered angle is provided on the inner wall of the interface from the end to the card slot B.
4. The double-circlip locking structure according to claim 3, characterized in that: The retaining spring A is designed to be C-shaped.
5. The double-circlip locking structure according to claim 4, characterized in that: The cross section of the retaining spring A is designed to be circular, the corresponding cross section of the retaining groove A is designed to be arc-shaped, and the cross section of the limiting groove is designed to be arc-shaped.
6. The double-circlip locking structure according to claim 5, characterized in that: The cross section of the clamping spring B is designed to be circular, and the corresponding cross section of the clamping slot B is designed to be arc-shaped.
7. The double-circlip locking structure according to claim 6, characterized in that: The card slot B is designed to be connected to the card slot A.
8. A pipe connection device comprising the double-circlip locking structure according to any one of claims 1 to 7, characterized in that: A sealing groove is provided on the inner wall of the interface along the circumferential direction. The sealing groove is located inside the limiting groove. A sealing ring is provided on the sealing groove. The sealing ring performs sealing under the action of the liquid introduced into the pipeline.
9. The pipe connection device according to claim 8, characterized in that: The sealing ring is designed as an O-ring, the inner diameter of the O-ring is smaller than the outer diameter of the pipe, and the sealing groove includes an integrally formed limiting portion and an inclined portion, the limiting portion is located on the inner side, the inclined portion is located on the outer side, and the depth of the inclined portion gradually decreases from the inside to the outside. The limiting portion is used to prevent the O-ring from moving inward, and the liquid in the pipe drives the O-ring to move outward and increases the extrusion force of the O-ring under the action of the inclined portion to seal.
Citation Information
Patent Citations
Self-sealing pipeline connecting device
CN118128983A