Rotary inner lock catch type pipeline connector

Abstract

The utility model relates to the technical field of pipeline connection, in particular to a rotary inner lock catch type pipeline connector. The connector comprises a bellmouth and a spigot, a first sealing ring is arranged in the bellmouth, a matching groove is formed in the inner wall of the first sealing ring, the two sides of the matching groove are an inner edge and an outer edge respectively, the outer edge is located on the side close to an opening of the bellmouth, and a notch is formed in the inner edge; a welding ring is arranged on the outer wall of the inserting opening, and buckling teeth corresponding to the notches are arranged on the welding ring. And when the socket is inserted into the bell mouth, the buckle teeth penetrate through the notches and are clamped and matched with the matching grooves. In addition, the pipeline connector further comprises a plurality of improved designs such as a plurality of notches, alignment marking lines, anti-sliding protruding lines and a double-layer sealing ring, and the sealing performance, corrosion resistance and reliability of the pipeline connector are effectively improved. The rotary inner lock catch type pipeline connector adopts a connection mode of rotating after sliding in and clamping and locking, is simple to operate, does not need a special or special tool, and is obviously superior to a traditional self-anchored pipeline connector.

Description

Technical Field

[0001] This application relates to the field of pipe connection technology, and in particular to a rotary internal locking pipe interface. Background Technology

[0002] With the development of towns and cities and the increasing demand for safe urban water supply, the construction, renovation and expansion of urban water supply networks mainly use ductile iron pipes. At the same time, in order to prevent the joints from falling off, the pipe joints adopt self-anchored socket rubber ring joints (i.e., slip-in self-anchored joints), which have good sealing performance, flexibility, extensibility and corrosion resistance. They have significant advantages in the field of water transmission materials and have a wide range of applications.

[0003] Reference Figure 1 The self-anchoring ductile iron pipe has two connection points: an inner connection (7) and an outer connection (6). The inner connection (7) is a flexible connection using a rubber ring, while the outer connection (6) is a rigid connection using a retaining ring (divided into three sections). The inner connection (7) and outer connection (6) work together to form a joint that combines rigidity and flexibility, and allow for adjustment of the pipe joint's expansion and contraction by providing a certain amount of extra space. Therefore, when disassembling the self-anchoring ductile iron pipe, a special tool (top plate) is needed to lift the retaining ring, and then the pipe at spigot 2 can be moved outwards to separate the pipe ends. However, if the retaining ring is stuck (no room for expansion and contraction), the pipe joint cannot be disassembled.

[0004] In addition, the internal self-anchoring ductile iron pipe is a sliding self-anchoring joint. When installing the pipe joint, auxiliary tools (pipe clamps, chain hoists, pry bars, wrenches, etc.) are required, making the installation process more complicated and the construction period longer.

[0005] Therefore, how to effectively solve the current problems of difficult installation and disassembly of pipe interfaces, and achieve the goals of simple operation, high efficiency and energy saving, is a technical problem that needs to be solved. Utility Model Content

[0006] This application provides a rotary internal locking pipe joint, which adopts the following technical solution:

[0007] A rotary internal locking pipe joint includes a socket and a spigot; a first sealing ring is provided inside the socket, and a mating groove is formed on the inner wall of the first sealing ring, and the mating groove is arranged around the periphery of the first sealing ring. The portions of the first sealing ring located on both sides of the mating groove are the inner edge and the outer edge, respectively, and the outer edge is located on the side of the first sealing ring closer to the opening of the socket; a notch is formed on the inner edge;

[0008] The outer wall of the socket is provided with a welding ring, and the welding ring is provided with a snap tooth corresponding to the notch; when the socket and the socket are inserted and mated, the snap tooth passes through the notch and engages with the mating groove.

[0009] By adopting the above technical solution, this rotary internal locking pipe joint enables quick and easy installation and disassembly, reducing the auxiliary tools required during construction and improving work efficiency. Specifically, the mating groove and notch design on the first sealing ring inside the socket allows the locking teeth on the spigot to smoothly pass through the notch and engage with the mating groove, thereby ensuring a stable connection between the spigot and the socket. This structure not only simplifies the installation process and reduces the various auxiliary tools required for traditional slide-in self-anchoring joints, improving construction efficiency, but also ensures the reliability and sealing of the joint, avoiding the problem of difficult disassembly caused by the retaining ring jamming.

[0010] Preferably, the notch is provided with multiple notches and is evenly distributed around the first sealing ring, and the corresponding teeth are provided with multiple teeth.

[0011] By adopting the above technical solution, the design of multiple notches and threads makes the connection between the spigot and socket more stable and reliable, improving the overall sealing performance and pull-out resistance of the interface. At the same time, the even distribution of multiple notches and threads can effectively disperse stress, avoiding damage to the pipe joint and anti-corrosion layer caused by single-point stress, thereby extending the service life of the pipe interface.

[0012] Preferably, the height of the outer edge is less than the height of the inner edge, and the inner edge abuts against the side wall of the socket, while a gap is provided between the outer edge and the side wall of the socket.

[0013] By adopting the above technical solution, the design of the outer edge height being less than the inner edge height makes the insertion of the socket smoother and reduces resistance; the tight contact between the inner edge and the side wall of the socket improves the sealing performance and effectively prevents leakage; the gap design between the outer edge and the side wall of the socket avoids the jamming problem caused by thermal expansion and contraction, ensuring the flexibility and reliability of the interface.

[0014] Preferably, alignment marking lines are provided on the side wall of the socket and the outer wall of the receptacle to indicate the alignment of the teeth and the notch.

[0015] By adopting the above technical solution, the alignment of the thread and the notch can be visually displayed when the spigot and socket are connected, ensuring accurate installation and improving installation efficiency.

[0016] Preferably, the inner wall of the socket is provided with a groove, the first sealing ring is disposed in the groove, the inner wall of the groove is provided with anti-slip ridges, and the first sealing ring is in close contact with the inner wall of the groove.

[0017] By adopting the above technical solution, the first sealing ring is fixed in the groove within the socket. The anti-slip ridges increase the friction between the first sealing ring and the groove, ensuring the stability and sealing performance of the first sealing ring. Simultaneously, the first sealing ring abuts tightly against the inner wall of the groove, further enhancing the overall sealing effect of the interface and improving the reliability and service life of the pipe connection.

[0018] Preferably, the first sealing ring has a groove on its side wall, and the groove has teeth on its inner wall that engage with the groove.

[0019] By adopting the above technical solution, the circumferential positioning of the first sealing ring is achieved through the cooperation of the locking teeth and the locking groove, which prevents the first sealing ring from rotating synchronously when the socket and the socket rotate relative to each other, thus ensuring the smooth cooperation between the locking teeth and the mating groove.

[0020] Preferably, the slots are provided in two sets and are located on both sides of the first sealing ring axially.

[0021] By adopting the above technical solution, the uniformity of the force on the first sealing ring can be improved, which helps to improve the stability of the first sealing ring.

[0022] Preferably, a second sealing ring is further provided inside the socket, the second sealing ring is located on the side of the first sealing ring facing away from the socket opening, and the side wall of the socket abuts against the second sealing ring.

[0023] By adopting the above technical solution, the second sealing ring can further improve the sealing performance of the pipe joint and reduce the risk of leakage. Specifically, when the spigot is inserted into the socket, the second sealing ring contacts the side wall of the spigot, forming a double sealing structure, which effectively enhances the sealing effect and improves the stability and reliability of the overall pipe connection system.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The rotary internal locking pipe joint adopts a sliding-in and rotating locking connection method, which is simple to operate and does not require special tools, and is significantly superior to the traditional self-anchoring pipe joint.

[0026] 2. During the installation of pipe joints, the pipe surface needs to be coated with an anti-corrosion layer. The two sealing rings can prevent damage to or destruction of the anti-corrosion layer, improve the corrosion resistance of the pipe joints, and help extend the service life of the pipe.

[0027] 3. The rotating internal locking type pipe adopts a double rubber sealing ring interface. The second sealing ring effectively prevents water inside the pipe from leaking out, while the first sealing ring effectively prevents groundwater in the soil outside the pipe from seeping into the pipe and polluting the water inside the pipe, thus effectively protecting the water environment quality inside and outside the pipe.

[0028] 4. The outer diameter and length of the rotating internal locking pipe socket are reduced by about 5mm to 15mm (on one side), without affecting the anti-detachment and water-stopping requirements of the pipe joint, effectively reducing the amount of manufacturing materials.

[0029] 5. By improving the interface form of self-anchored pipes, pipe interface detachment is effectively prevented, and pipe interface jamming that makes disassembly difficult can also be avoided. At the same time, the application prospects of ductile iron pipes in complex terrain and geological environments are expanded, which is conducive to ensuring the environmental quality of water transmission materials. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the pipe interface structure in the background art of this application;

[0031] Figure 2 This is a schematic diagram of the rotating internal locking pipe interface in an embodiment of this application;

[0032] Figure 3 yes Figure 2 A magnified view of part A in the middle;

[0033] Figure 4 This is a schematic diagram used to illustrate the tooth and slot structure in this application;

[0034] Figure 5 yes Figure 4 A magnified view of part B in the middle section;

[0035] The following markings are used in the attached diagram: 1. Socket; 11. Groove; 12. Tooth; 2. Insert; 3. First sealing ring; 31. Mating groove; 32. Inner edge; 33. Outer edge; 331. Notch; 34. Slot; 4. Welding ring; 41. Threaded tooth; 5. Second sealing ring; 6. Outer interface; 7. Inner interface. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 2-5 This application will be described in further detail.

[0037] This application provides a rotary internal locking pipe interface, referring to... Figure 1 and Figure 2 The device includes a socket 1 and a spigot 2. A groove is formed in the inner wall of the socket 1, and a first sealing ring 3 is disposed within the groove 11 to achieve axial fixation of the first sealing ring 3. A mating groove 31 is formed on the inner wall of the first sealing ring 3, and this mating groove 31 surrounds the periphery of the first sealing ring 3. The portions of the first sealing ring 3 located on both sides of the mating groove 31 are an inner edge 32 and an outer edge 33, respectively, wherein the outer edge 33 is located on the side of the first sealing ring 3 closest to the opening of the socket 1.

[0038] A notch 331 is provided on the outer edge 33. A welding ring 4 is provided on the outer wall of the socket 2, and a snap tooth 41 corresponding to the notch 331 is provided on the welding ring 4. When the socket 2 and the socket 1 are inserted and mated, the snap tooth 41 passes through the notch 331 and rotates the socket 1 and the socket 2 relative to each other, so that the snap tooth 41 engages with the mating groove 31.

[0039] It should be noted that in order to ensure that the snap tooth 41 can smoothly enter the inside of the socket 1 and cooperate with the first sealing ring 3, a groove corresponding to the snap tooth 41 is provided on the inner wall of the socket 1 at the position between the end and the groove 11. The groove communicates with the notch 331 to allow the snap tooth 41 to pass through.

[0040] Specifically, the threaded teeth 41 are arranged radially along the pipe. There are several threaded teeth 41, and the number of threaded teeth 41 is adjusted according to the pipe size; generally, the smaller the pipe diameter, the fewer threaded teeth 41 are required. The radial angle between two adjacent threaded teeth 41 is between 20° and 60°, and is adjusted accordingly based on the pipe diameter; generally, the smaller the pipe diameter, the larger the central angle.

[0041] The inner edge 32 is higher than the outer edge 33, ensuring a tight seal between the inner edge 32 and the side wall of the socket 2. A certain gap remains between the outer edge 33 and the side wall of the socket 2.

[0042] To facilitate installation and inspection, alignment markings are provided on the side wall of the socket 2 and the outer wall of the socket 1. These markings can be made by spray painting or engraving, resulting in vibrant colors and high contrast. The width of the alignment markings corresponds to the width of the snap tooth and the notch, allowing operators to visually determine whether the snap tooth 41 is accurately aligned with the notch 331. This avoids interface failures caused by misalignment and improves installation efficiency.

[0043] A second sealing ring 5 is also provided inside the socket 1. The second sealing ring 5 is located on the side of the first sealing ring 3 facing away from the opening of the socket 1. The side wall of the spigot 2 abuts against the second sealing ring 5, further improving the sealing performance of the entire interface.

[0044] The first sealing ring 3 and the second sealing ring 5 can also be made of corrosion-resistant and highly elastic rubber materials, such as silicone or fluororubber, to adapt to more demanding working environments.

[0045] Reference Figure 4 and Figure 5 The first sealing ring 3 has a groove 34 on its side wall, and a retaining tooth 12 that mates with the groove 34 is provided on the inner wall of the groove 11. The circumferential positioning of the first sealing ring 3 is achieved through the engagement of the retaining tooth 12 and the groove 34, preventing the first sealing ring 3 from rotating synchronously when the socket 2 and the socket 1 rotate relative to each other, thus ensuring smooth engagement between the retaining tooth 41 and the mating groove 31. Furthermore, two sets of grooves 34 are provided, located on opposite sides of the first sealing ring 3 along its axial direction, which improves the uniformity of force distribution on the first sealing ring 3.

[0046] The implementation principle of this embodiment is as follows: When installing the rotating internal locking ductile iron pipe, adjust the direction of the locking tooth 41 so that it is aligned with the notch 331, so that the locking tooth 41 can pass smoothly through the notch 331. Then, rotate the spigot 2 pipe clockwise (or counterclockwise) by 1 to 2 degrees so that the locking tooth 41 engages with the mating groove 31, thereby locking the spigot 2 and the socket 1 to complete the installation of the pipe.

[0047] Conversely, when dismantling a rotating internal locking ductile iron pipe, rotate the spigot 2 pipe or the socket 1 pipe counterclockwise (or clockwise) by 1 to 2 degrees to align the locking teeth 6 with the notch 8, and then pull the pipe outward to separate the pipe joints.

[0048] Compared with the traditional self-anchored socket rubber ring interface, this utility model not only simplifies the construction process and reduces labor costs, but also solves the problem of non-removability caused by the retaining ring jamming to a certain extent, thereby improving the reliability and maintenance convenience of the system.

[0049] This application applies to ductile iron pipes with a diameter of d1000mm or less, and can be widely used in urban water supply and drainage and other high-performance pipelines for transporting liquids. It exhibits significant advantages in terms of sealing, extensibility, flexibility, corrosion resistance and deformation resistance, and fully ensures the stability and reliability of the pipe joints.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rotary internal locking type pipe joint, characterized in that: It includes a socket (1) and a spigot (2); a first sealing ring (3) is provided inside the socket (1), and a mating groove (31) is provided on the inner wall of the first sealing ring (3), and the mating groove (31) is arranged around the periphery of the first sealing ring (3). The portions of the first sealing ring (3) located on both sides of the mating groove (31) are the inner edge (32) and the outer edge (33), respectively. The outer edge (33) is located on the side of the first sealing ring (3) close to the opening of the socket (1); a notch (331) is provided on the inner edge (32). The outer wall of the socket (2) is provided with a welding ring (4), and the welding ring (4) is provided with a snap tooth (41) corresponding to the notch (331); when the socket (2) and the socket (1) are inserted and fitted, the snap tooth (41) passes through the notch (331) and engages with the mating groove (31).

2. The rotary internal locking pipe interface according to claim 1, characterized in that: The notch (331) is provided with multiple teeth and is evenly distributed around the first sealing ring (3), and the teeth (41) are provided with multiple teeth.

3. The rotary internal locking pipe interface according to claim 1, characterized in that: The height of the outer edge (33) is less than the height of the inner edge (32), and the inner edge (32) abuts against the side wall of the socket (2), while a gap is provided between the outer edge (33) and the side wall of the socket (2).

4. The rotary internal locking pipe interface according to claim 1, characterized in that: Alignment marking lines are provided on the side wall of the socket (2) and the outer wall of the socket (1) to indicate the alignment of the buckle (41) and the notch (331).

5. The rotary internal locking pipe interface according to claim 1, characterized in that: The inner wall of the socket (1) is provided with a groove (11), and the first sealing ring (3) is provided in the groove (11). The first sealing ring (3) is in close contact with the inner wall of the groove (11).

6. The rotary internal locking pipe interface according to claim 5, characterized in that: The first sealing ring (3) has a groove on its side wall, and the groove (11) has teeth on its inner wall that cooperate with the groove.

7. The rotary internal locking pipe interface according to claim 6, characterized in that: The slots are provided in two sets and are located on both sides of the first sealing ring (3) axially.

8. The rotary internal locking pipe interface according to claim 1, characterized in that: The socket (1) is also provided with a second sealing ring (5), which is located on the side of the first sealing ring (3) facing away from the opening of the socket (1). The side wall of the insertion port (2) abuts against the second sealing ring (5).

Images