Butterfly and connecting fitting
By introducing annular grooves and cut-off rings into the socket and connecting fittings, the problem of repairing pipes of various specifications and lengths is solved, achieving flexible pipe connections and efficient repair results while reducing costs.
Patent Information
- Application Number
- CN202520131502.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Existing technologies are not applicable to the repair of plastic pipes of various specifications, nor can they meet the repair needs of different lengths, resulting in high production and maintenance costs and low repair efficiency.
A connector is provided, which allows for adhesive bonding after pipe specifications are adapted by designing an annular groove and a cutting ring on the outside of the main body through hole; the connecting fittings enable the repair of pipes of various specifications and lengths through adjustable length fittings and locking parts.
It enables the repair of pipes of various specifications and lengths, reduces production and maintenance costs, improves repair efficiency, and prevents media leakage and impurity entry through a sealing structure.
Smart Images
Figure CN223662824U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of drainage pipes, and more specifically, to a socket and connecting fittings. Background Technology
[0002] With the acceleration of urbanization and the advancement of infrastructure construction, plastic pipes and their matching fittings are gradually replacing traditional metal pipes and becoming the preferred choice in the market due to their superior performance and cost-effectiveness. These plastic pipes are not only lightweight, corrosion-resistant, and easy to install, but also possess excellent sealing properties and a long service life, making them widely used in various fields such as construction, agriculture, chemical industry, and environmental protection. Especially in water supply and drainage systems, plastic pipes are gradually replacing traditional metal pipes due to their significant advantages such as light weight, low flow resistance, energy saving, simple and quick installation, and lower cost.
[0003] However, PVC drainage pipes are relatively brittle and prone to cracking or breaking during installation or use due to external impacts, leading to leaks. Once a leak occurs, the pipe needs to be replaced or repaired. Currently available repair products are often only suitable for specific pipe sizes, lacking flexibility and unable to accommodate repair needs of varying lengths. This limits repair efficiency and increases maintenance costs. To meet the repair needs of pipes of different sizes and lengths, a large number of sockets and fittings need to be produced and stocked, increasing production costs. Therefore, developing more flexible and universal pipe repair technologies and fittings to reduce production and maintenance costs and improve repair efficiency has become an urgent problem for the plastic pipe industry. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of existing technologies that cannot be applied to pipes of various specifications or repair lengths, and to provide a socket and connecting accessories that can repair pipes of various specifications within a certain range.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0006] A receiving interface is provided, including a main body and a plurality of cutting rings. A through hole is provided in the middle of the main body, and a plurality of annular grooves are sequentially provided on the outer side of the through hole. The plurality of cutting rings are inserted into the plurality of annular grooves.
[0007] The main body of this utility model has a through hole in the middle, and several annular grooves are arranged sequentially on the outside of the through hole. Several cutting rings are inserted into the annular grooves. When the pipe size matches the through hole size, the operator applies glue to the pipe end and the inner wall of the through hole, inserts the pipe into the through hole, and the outer wall of the pipe is glued to the inner wall of the through hole. When the pipe size is larger than the through hole, the operator, according to the pipe size, starts from the cutting ring near the through hole and taps the end of the cutting ring. The main body at the end of the annular groove breaks, and the inner diameter of the through hole increases until the inner diameter of the through hole matches the pipe size. After confirming the size match, the operator applies glue to the pipe end and the inner wall of the through hole, inserts the pipe into the through hole, and the outer wall of the pipe is glued to the inner wall of the through hole. Therefore, the socket can be connected to pipes of various different sizes. At the same time, after confirming the pipe size match, the operator applies glue between the main body and the several cutting rings to ensure the strength of the socket.
[0008] Furthermore, the cutting ring has a pointed tip at its end, which abuts against the inner wall of the annular groove. The operator taps the end of the cutting ring according to the pipe specifications. The pointed tip of the cutting ring abuts against the inner wall of the main body's annular groove, causing the main body to break upon contact with the pointed tip. The broken main body and the fallen cutting ring are then removed. The outer wall of the pipe is bonded to the inner wall of the expanded through-hole. Because the contact area between the pointed tip of the cutting ring and the annular groove is relatively small, the main body experiences greater pressure under the same applied force. This allows the cutting ring to cut the main body more easily, enabling the operator to complete the operation with less effort, reducing labor intensity while improving work efficiency.
[0009] Furthermore, the inner wall of the annular groove that abuts against the tip has a notch, and the tip inserts into the notch. Through the interaction of the notch and the tip, the operator can more easily cut off and remove the main body.
[0010] This utility model also provides a connecting fitting, including two receiving interfaces, a first pipe fitting, a second pipe fitting, and a first sealing ring. The first pipe fitting and the second pipe fitting are inserted into each other, and the first sealing ring is installed between the first pipe fitting and the second pipe fitting. One receiving interface is installed at the end of the first pipe fitting away from the second pipe fitting, and the other receiving interface is installed at the end of the second pipe fitting away from the first pipe fitting.
[0011] The first pipe fitting of this utility model is inserted into one end of the second pipe fitting, and a first sealing ring is installed between the first pipe fitting and the second pipe fitting. The other end of the first pipe fitting is connected to a pipe through a socket, and the other end of the second pipe fitting is connected to another pipe through another socket. The length of this utility model can be adjusted by pulling the relative position of the first pipe fitting and the second pipe fitting, so as to achieve universal repair of pipes within a certain range.
[0012] Furthermore, the second pipe fitting has a first groove circumferentially located at its end furthest from the pipe. One side of the first sealing ring abuts against the inner wall of the first groove, and the other side abuts against the inner wall of the first pipe fitting. The abutting of one side of the first sealing ring against the inner wall of the first groove and the other side against the inner wall of the first pipe prevents damage to the second pipe fitting due to deformation when it moves relative to the first pipe fitting, reduces wear, and thus extends the service life of this invention.
[0013] Furthermore, it also includes a first locking member, a second locking member, and a third locking member. The first locking member is sleeved on one end of the first pipe fitting, the second locking member is sleeved on the other end of the first pipe fitting, and the third locking member is sleeved on the end of the second pipe fitting away from the first pipe fitting. The first locking member secures and tightens the connection between the first pipe fitting and the pipeline, the second locking member secures and tightens the connection between the first pipe fitting and the second pipe fitting, and the third locking member secures and tightens the connection between the second pipe fitting and the pipeline.
[0014] Furthermore, both the first and second locking components are threadedly connected to the first pipe fitting, and the third locking component is threadedly connected to the second pipe fitting. The threaded connection structure is simple, enabling quick and repeated installation and disassembly, and is suitable for maintenance or replacement of pipelines; the threaded connection forms a tight seal, effectively preventing media leakage; at the same time, the threaded connection is applicable to different materials, offering strong versatility.
[0015] Furthermore, the first, second, and third locking members are all provided with several reinforcing ribs along their outer sides in the circumferential direction. The reinforcing ribs enhance the structural strength of the first, second, and third locking members.
[0016] Furthermore, it also includes a fourth sealing ring, a second sealing ring, and a third sealing ring. The fourth sealing ring is installed between the first pipe fitting and the socket, the second sealing ring is installed between the second pipe fitting and the socket, and the third sealing ring is installed between the first pipe fitting and the second pipe fitting. The installation of the fourth and second sealing rings can prevent the medium from leaking from the connection, ensuring the normal operation of the pipeline, and at the same time preventing contaminants from entering the interior of the connecting fittings, maintaining the cleanliness of the internal environment. The third sealing ring forms a balanced seal at both ends with the first sealing ring. The setting of the third sealing ring can also prevent internal impurities from entering the tension gap between the first and second pipe fittings, and can also automatically clean impurities adhering to the inner wall of the first pipe fitting during pushing and pulling.
[0017] Furthermore, it also includes a clamping ring, which has an L-shaped structure. The outer side of the clamping ring abuts against the inner wall of the first pipe fitting, and its inner side abuts against the outer wall of the second pipe fitting. One end of the clamping ring abuts against the inner wall of the second locking member, and the other end abuts against the third sealing ring. The clamping ring prevents external impurities from entering the tension gap. One end of the clamping ring abuts against the second locking member, and the other end abuts against the third sealing ring. By clamping the clamping ring with the locking member, the third sealing ring deforms, ensuring the sealing and length fixation of this utility model.
[0018] Compared with the prior art, the beneficial effects of this utility model are:
[0019] 1. The main body of this utility model has several expansion components arranged radially on its side. The end of the pipe to be repaired abuts against the inner wall of the expansion component. The expansion component is removed according to the pipe specification so that the inner diameter of the expansion component matches the outer diameter of the pipe. After confirming the match, the operator applies glue to the outside of the pipe and inserts the pipe into the expansion component. The outer wall of the pipe is glued to the inner wall of the expansion component. Therefore, the socket can be connected to pipes of various specifications.
[0020] 2. Both the first and second pipe fittings of this utility model are connected to the pipeline through a socket. The first and second pipe fittings are inserted into each other. The length of this utility model can be adjusted by pulling the relative position of the first and second pipe fittings, so as to achieve universal repair of pipelines within a certain range.
[0021] 3. The clamping ring prevents external impurities from entering the tension gap. One side of the clamping ring abuts against the second locking member, and the other side abuts against the third sealing ring. The clamping ring is pressed by the locking member, which causes the third sealing ring to deform, thus ensuring the sealing and length fixation of this utility model. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of the connector of this utility model;
[0023] Figure 2 for Figure 1 AA section view;
[0024] Figure 3 This is a structural schematic diagram of the connector and connecting accessories of this utility model;
[0025] Figure 4 This is a structural schematic diagram of the connecting accessory of this utility model;
[0026] Figure 5 for Figure 4 BB cross-sectional view;
[0027] Figure 6 for Figure 5 Enlarged view of point C;
[0028] Figure 7 for Figure 5 Enlarged view of point D.
[0029] In the attached diagram: 100, receiving interface; 110, main body; 111, annular groove; 112, notch; 120, cutting ring; 121, tip; 130, through hole; 200, first pipe fitting; 210, second groove; 300, second pipe fitting; 310, first groove; 410, first locking element; 420, second locking element; 430, third locking element; 440, reinforcing rib; 510, fourth sealing ring; 520, second sealing ring; 530, third sealing ring; 540, first sealing ring; 600, compression ring. Detailed Implementation
[0030] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0031] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0032] Example 1
[0033] like Figures 1 to 2The first embodiment of the present invention is shown. The present invention includes a main body 110 and several cutting rings 120. A through hole 130 is formed in the middle of the main body 110, and several annular grooves 111 are sequentially formed on the outer side of the through hole 130, with the size of the annular grooves 111 increasing sequentially. The cutting rings 120 are inserted into the annular grooves 111. When the pipe size matches the size of the through hole 130, the operator applies glue to the pipe end and the inner wall of the through hole 130, inserts the pipe into the through hole 130, and the outer wall of the pipe is glued to the inner wall of the through hole 130. When the pipe size is larger than the through hole 130... At 30 o'clock, the operator, according to the pipe specification, starts from the cut ring 120 near the through hole 130 and taps the end of the cut ring 120. The main body 110 at the end of the annular groove 111 breaks, and the inner diameter of the through hole 130 increases. If the pipe size is still larger than the inner diameter of the through hole 130, the above operation can be repeated until the inner diameter of the through hole 130 matches the pipe size. After confirming the size match, the operator applies glue to the end of the pipe and the inner wall of the through hole 130, inserts the pipe into the through hole 130, and the outer wall of the pipe is glued to the inner wall of the through hole 130. Therefore, the socket 100 can be connected to pipes of various different specifications. In addition, after confirming that the pipe size is suitable, the operator applies glue between the main body 110 and several cut rings 120 to ensure the strength of the socket 100.
[0034] The cutting ring 120 of this invention has a pointed tip 121 at its end, which abuts against the inner wall of the annular groove 111. The operator taps the end of the cutting ring 120 according to the pipe specifications. The pointed tip 121 of the cutting ring 120 abuts against the inner wall of the annular groove 111 of the main body 110. The tapping causes the main body 110 to break upon contact with the pointed tip 121 of the cutting ring 120. The broken main body 110 and the fallen cutting ring 120 are removed. The outer wall of the pipe is bonded to the inner wall of the expanded through hole 130. Because the contact area between the pointed tip 121 of the cutting ring 120 and the annular groove 111 is relatively small, the main body 110 experiences greater pressure under the same applied force. This allows the cutting ring 120 to cut the main body 110 more easily, enabling the operator to complete the operation with less effort, reducing the operator's labor intensity while improving work efficiency. The main body 110 of this utility model is made of plastic and is integrally molded by injection molding. The cutting ring 120 is made of metal. The inner wall of the annular groove 111 is bonded to the cutting ring 120. The outer and inner walls of each cutting ring 120 are bonded to the main body 110 to ensure the strength of the bearing interface 100.
[0035] In this invention, the inner wall of the annular groove 111 abutting against the tip 121 is provided with a notch 112, and the tip 121 is inserted into the notch 112. Through the action of the notch 112 and the tip 121, the operator can more easily cut off and remove the main body 110. The tip 121 is located on the side of the cutting ring 120 near the through hole 130, with one side of the tip 121 flush with the inner wall of the cutting ring 120 and the other side inclined. The position of the notch 112 corresponds to the position of the tip 121. At the same time, the main body 110 of this invention is divided into a first part located on the side of the annular groove 111 and a second part located at the bottom of the annular groove 111. The length of the first part of the main body 110 is much smaller than the length of the second part of the main body 110. The smaller length of the first part of the main body 110 ensures that the operator can easily cut the main body 110 according to the pipe specifications.
[0036] The working principle of the connector 100 in this embodiment is as follows: A through hole 130 is provided in the middle of the main body 110, and a plurality of annular grooves 111 are provided on the outer side of the through hole 130 in sequence. The size of the annular grooves 111 increases in sequence. When the pipe specification size is compatible with the inner wall of the through hole 130, the operator applies glue to the end of the pipe and the inner wall of the through hole 130, inserts the pipe into the through hole 130, and the outer wall of the pipe is glued to the inner wall of the through hole 130. When the pipe specification size is larger than the through hole 130, the operator, according to the pipe specification, starts from the cutting ring 120 near the through hole 130 and taps the end of the cutting ring 120. The main body 110, which abuts against the tip 121 of the cutting ring 120, is then connected to the pipe. The pipe breaks at notch 112. The broken main body 110 and the fallen cut rings 120 are removed. The inner diameter of the through hole 130 increases. If the pipe size is still larger than the inner diameter of the through hole 130, the above operation can be repeated until the inner diameter of the through hole 130 matches the pipe size. After confirming the size match, the operator applies glue to the pipe end and the inner wall of the through hole 130, inserts the pipe into the through hole 130, and the outer wall of the pipe is glued to the inner wall of the through hole 130. Therefore, the socket 100 can connect to pipes of various specifications. Furthermore, after confirming the pipe size fit, the operator applies glue between the main body 110 and several cut rings 120 to ensure the strength of the socket 100.
[0037] Example 2
[0038] like Figures 3 to 5The first embodiment of a connecting fitting of the present invention is shown. The present invention includes two receiving interfaces 100, and also includes a first pipe fitting 200, a second pipe fitting 300, and a first sealing ring 540. The first pipe fitting 200 and the second pipe fitting 300 are inserted into each other. The first sealing ring 540 is installed between the first pipe fitting 200 and the second pipe fitting 300. One receiving interface 100 is installed at the end of the first pipe fitting 200 away from the second pipe fitting 300, and the other receiving interface 100 is installed at the end of the second pipe fitting 300 away from the first pipe fitting 200. The first pipe fitting 200 of this utility model is inserted into one end of the second pipe fitting 300. The first sealing ring 540 is installed between the first pipe fitting 200 and the second pipe fitting 300. The other end of the first pipe fitting 200 is connected to a pipe through a socket 100, and the other end of the second pipe fitting 300 is connected to another pipe through another socket 100. The length of this utility model can be adjusted by pulling the relative position of the first pipe fitting 200 and the second pipe fitting 300, so as to achieve universal repair of pipes within a certain range.
[0039] The second pipe fitting 300 of this invention has a first groove 310 circumferentially arranged at its end away from the pipe. One side of the first sealing ring 540 abuts against the inner wall of the first groove 310, and the other side abuts against the inner wall of the first pipe fitting 200. This arrangement, where one side of the first sealing ring 540 abuts against the inner wall of the first groove 310 and the other side abuts against the inner wall of the first pipe 200, prevents damage to the second pipe fitting 300 due to deformation when it moves relative to the first pipe fitting 200, reduces wear, and thus extends the service life of this invention.
[0040] This utility model also includes a first locking member 410, a second locking member 420, and a third locking member 430. The first locking member 410 is sleeved on one end of the first pipe fitting 200, the second locking member 420 is sleeved on the other end of the first pipe fitting 200, and the third locking member 430 is sleeved on the end of the second pipe fitting 300 away from the first pipe fitting 200. The first locking member 410 fixes and tightens the connection between the first pipe fitting 200 and the pipeline, the second locking member 420 fixes and tightens the connection between the first pipe fitting 200 and the second pipe fitting 300, and the third locking member 430 fixes and tightens the connection between the second pipe fitting 300 and the pipeline.
[0041] The first locking member 410 and the second locking member 420 of this utility model are both threadedly connected to the first pipe fitting 200, and the third locking member 430 is threadedly connected to the second pipe fitting 300. The threaded connection structure is simple, enabling quick and repeated installation and disassembly, and is suitable for maintenance or replacement of pipelines. The threaded connection forms a tight seal, effectively preventing media leakage. Furthermore, the threaded connection is applicable to different materials, offering strong versatility. In this embodiment, the first locking member 410 and the second locking member 420 are threadedly connected to the first pipe fitting 200, and the third locking member 430 is threadedly connected to the second pipe fitting 300, but this is not a limitation. Fixing can also be achieved using clamps, welding, snap-fitting, elastic rings, etc., and the appropriate method should be selected based on actual needs.
[0042] The first locking member 410, the second locking member 420, and the third locking member 430 of this utility model are all provided with a plurality of reinforcing ribs 440 along the circumferential direction on their outer sides. The reinforcing ribs 440 enhance the structural strength of the first locking member 410, the second locking member 420, and the third locking member 430, disperse the concentrated load over a larger area, reduce the local stress level, and thus extend the service life of the first locking member 410, the second locking member 420, and the third locking member 430. At the same time, when loosening and tightening the first locking member 410, the second locking member 420, and the third locking member 430, the reinforcing ribs 440 provide support for the first locking member 410, the second locking member 420, and the third locking member 430. The reinforcing ribs 440 can also serve as an auxiliary structure in the assembly process, helping to align and fix the parts, ensuring the accuracy of the assembly; moreover, they can improve their stability under stress and reduce the risk of damage caused by stress.
[0043] The working principle of the connecting fitting in this embodiment is as follows: The end of the first pipe fitting 200 is connected to a pipe through a socket 100. The first pipe fitting 200 and the second pipe fitting 300 are inserted into each other, and a first sealing ring 540 is installed between the first pipe fitting 200 and the third key 300. The operator pulls the second pipe fitting 300 according to the length of the pipe to be repaired. The length of the present invention is adjusted by adjusting the relative position of the first pipe fitting 200 and the second pipe fitting 300, so that the present invention can be adapted to repair pipes of different lengths within a certain range. The second pipe fitting 300 is connected to another pipe through another socket 100. The operator tightens the first locking part 410, the second locking part 420 and the third locking part 430 to achieve fixation and sealing.
[0044] Example 3
[0045] like Figures 5 to 7The diagram shows a second embodiment of a connecting fitting according to this utility model. This embodiment is similar to Embodiment 2, except that it further includes a fourth sealing ring 510, a second sealing ring 520, and several third sealing rings 530. A fourth sealing ring 510 is installed between the first pipe fitting 200 and the receiving interface 100, a second sealing ring 520 is installed between the second pipe fitting 300 and the receiving interface 100, and several third sealing rings 530 are installed between the first pipe fitting 200 and the second pipe fitting 300. The installation of the fourth sealing ring 510 and the second sealing ring 520 prevents the medium from leaking from the connection point, ensuring the normal operation of the pipeline, and also prevents contaminants from entering the interior of the connecting fitting, maintaining a clean internal environment. The third sealing ring 530 forms a balanced seal at both ends with the first sealing ring 540. The third sealing ring 530 also prevents internal impurities from entering the tension gap between the first pipe fitting 200 and the second pipe fitting 300, and can automatically clean impurities adhering to the inner wall of the first pipe fitting 200 during pushing and pulling.
[0046] This utility model also includes a clamping ring 600, which has an L-shaped structure. The outer side of the clamping ring 600 abuts against the inner wall of the first pipe fitting 200, and its inner side abuts against the outer wall of the second pipe fitting 300. One end of the clamping ring 600 abuts against the inner wall of the second locking member 420, and the other end abuts against the third sealing ring 530. The clamping ring 600 prevents external impurities from entering the tension gap. It can also automatically remove impurities from the gap when the first pipe is pulled relative to the second pipe. One end of the clamping ring 600 abuts against the second locking member 420, and the other end abuts against the third sealing ring 530. By clamping the clamping ring 600 with the locking member, the third sealing ring 530 is deformed, ensuring the sealing and length fixation of this utility model.
[0047] The first pipe fitting 200 of this utility model has annular protrusions at both ends along the circumferential direction, and a second groove 210 is provided on the inner side of the end of the first pipe fitting 200 away from the receiving interface 100. The third sealing ring 530 is installed between the second groove 210 and the second pipe fitting 300. One side of the clamping ring 600 abuts against the inner wall of the second groove 210, and the other side abuts against the second pipe fitting 300. One end of the ring abuts against the third sealing ring 530, and the other end abuts against the inner wall of the second locking member 420.
[0048] The working principle of a connecting fitting in this embodiment is as follows: The end of the first pipe fitting 200 is connected to the pipe through the socket 100 and the fourth sealing ring 510. The second pipe fitting 300 is pulled according to the length of the pipe to be repaired, thereby adjusting the length of this utility model. The second pipe fitting 300 is connected to the pipe through the socket 100 and the second sealing ring 520. The operator tightens the first locking member 410, the second locking member 420, and the third locking member 430 through the reinforcing rib 440. One side of the pressure ring 600 abuts against the second locking member 420, and the other side abuts against the third sealing ring 530. By pressing the pressure ring 600 with the locking member, the third sealing ring 530 is deformed, ensuring the sealing and length fixation of this utility model.
[0049] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.
[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A type of connector, characterized in that, It includes a main body (110) and several cutting rings (120). A through hole (130) is provided in the middle of the main body (110). Several annular grooves (111) are provided on the outer side of the through hole (130). Several cutting rings (120) are inserted into several annular grooves (111).
2. The connector according to claim 1, characterized in that, The end of the cutting ring (120) is provided with a tip (121), and the tip (121) abuts against the inner wall of the annular groove (111).
3. The receiving interface according to claim 2, characterized in that, The inner wall of the annular groove (111) that abuts against the tip (121) is provided with a notch (112), and the tip (121) is inserted into the notch (112).
4. A connecting accessory, characterized in that, The device includes two sockets (100) as described in any one of claims 1 to 3, and further includes a first pipe fitting (200), a second pipe fitting (300), and a first sealing ring (540). The first pipe fitting (200) is inserted into the second pipe fitting (300), and the first sealing ring (540) is installed between the first pipe fitting (200) and the second pipe fitting (300). One socket (100) is installed at the end of the first pipe fitting (200) away from the second pipe fitting (300), and the other socket (100) is installed at the end of the second pipe fitting (300) away from the first pipe fitting (200).
5. The connecting fitting according to claim 4, characterized in that, The second pipe fitting (300) has a first groove (310) circumferentially provided at the end away from the receiving interface (100). One side of the first sealing ring (540) abuts against the inner wall of the first groove (310), and the other side abuts against the inner wall of the first pipe fitting (200).
6. The connecting fitting according to claim 4, characterized in that, It also includes a first locking member (410), a second locking member (420), and a third locking member (430). The first locking member (410) is sleeved on one end of the first pipe (200), the second locking member (420) is sleeved on the other end of the first pipe (200), and the third locking member (430) is sleeved on the end of the second pipe (300) away from the first pipe (200).
7. The connecting fitting according to claim 6, characterized in that, The first locking member (410) and the second locking member (420) are both threadedly connected to the first pipe fitting (200), and the third locking member (430) is threadedly connected to the second pipe fitting (300).
8. The connecting fitting according to claim 6, characterized in that, The first locking member (410), the second locking member (420), and the third locking member (430) are all provided with several reinforcing ribs (440) along the circumferential direction on their outer sides.
9. The connecting fitting according to claim 8, characterized in that, It also includes a fourth sealing ring (510), a second sealing ring (520) and a third sealing ring (530), wherein the fourth sealing ring (510) is installed between the first pipe fitting (200) and the receiving interface (100), the second sealing ring (520) is installed between the second pipe fitting (300) and the receiving interface (100), and the third sealing ring (530) is installed between the first pipe fitting (200) and the second pipe fitting (300).
10. The connecting fitting according to claim 9, characterized in that, It also includes a clamping ring (600), which has an L-shaped structure. The outer side of the clamping ring (600) abuts against the inner wall of the first pipe fitting (200), the inner side of the clamping ring (600) abuts against the outer wall of the second pipe fitting (300), one end of the clamping ring (600) abuts against the inner wall of the second locking member (420), and the other end abuts against the third sealing ring (530).