Pipe joint assembly
By designing a pipe fitting assembly with a right-angled trapezoidal snap sleeve and a rotating contact rod, the problem of insufficient flexibility in connecting pipes of different diameters is solved, achieving flexible adaptation and sealing for pipes of different diameters, and reducing the need for additional custom fittings.
Patent Information
- Application Number
- CN202511839934.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-01-16
AI Technical Summary
In existing technologies, pipe connections that do not involve specific combinations of different diameters require custom-made reducing fittings or flared fittings, resulting in insufficient adaptability and increased costs.
A pipe fitting assembly is designed, which adopts a right-angled trapezoidal snap-fit sleeve and a rotating contact rod structure. By moving and rotating the snap-fit sleeve, flexible connection of pipes of different diameters can be achieved. Combined with the design of sealing groove and elastic ring, sealing performance and stability are ensured.
It enables flexible adaptation to pipes of different diameters, improves connection flexibility and sealing performance, reduces the need for additional custom fittings, and reduces costs.
Smart Images
Figure CN121346092A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of pipe connections, and in particular to a pipe fitting assembly. Background Technology
[0002] Pipe fitting assemblies are detachable connection elements used to connect pipes or pipelines. Their core function is to achieve a stable connection and reliable sealing of the pipeline, while also meeting the requirements for easy disassembly and assembly.
[0003] In industrial piping systems, hydraulic equipment, civil pipelines, and special engineering fields, there is a common need to connect pipes of different diameters. Existing connections for pipes of different diameters generally use customized reducers or flared and compression fittings. However, these all have certain limitations in use. Reducers, flared or compression fittings can generally only be installed for pipes with specific diameter combinations, and it is difficult to adjust the connection diameter temporarily. For pipes with non-specific diameter combinations, additional customized fittings or adapters are generally required, which takes longer and increases the cost.
[0004] In summary, existing technologies generally require the use of custom-made reducing fittings, flared fittings, or compression fittings to connect pipes that do not have specific combinations of different diameters. This results in a lack of flexibility in pipe fitting adaptation. Summary of the Invention
[0005] This invention provides a pipe fitting assembly that can solve the problem that in the prior art, pipes with non-specific combinations of different diameters generally need to be connected by customized reducers, flared or compression fittings, resulting in insufficient adaptability of pipe fittings.
[0006] A pipe fitting assembly includes a connecting pipe for connecting two pipes, wherein a connecting mechanism is provided at the end of the connecting pipe, the connecting mechanism comprising: A snap-fit sleeve is threaded to the end of a connecting pipe. The cross-section of the snap-fit sleeve is a right-angled trapezoid, and the dimension of the snap-fit sleeve near the middle of the connecting pipe is larger than the dimension on the other side. Several sealing rings are detachably connected to the surface of the snap-fit sleeve. A plurality of contact rods are rotatably mounted at the end of the connecting pipe. The plurality of contact rods are arranged in a circular array at the end of the connecting pipe. A rotating spring is fixedly mounted between the contact rods and the connecting pipe through a rotating assembly. An elastic ring is detachably connected between the plurality of contact rods. The contact rods are fitted with a snap-fit sleeve.
[0007] Optionally, the surface of the buckle sleeve is provided with several sealing grooves, which are adapted to the sealing ring.
[0008] Optionally, the sealing groove comprises a recessed groove and a fan-shaped groove, the fan-shaped groove is in surface contact with the sealing ring, and the distance between the recessed groove and the middle part of the connecting pipe is greater than the distance between the fan-shaped groove and the middle part of the connecting rod.
[0009] Optionally, the end of the fan-shaped groove away from the recessed groove is made of elastic material.
[0010] Optionally, two installation grooves are arranged on the surface of the contact rod, the two installation grooves are symmetrically arranged relative to the contact rod, and the installation grooves are matched with the elastic ring.
[0011] Optionally, the cross section of the elastic ring is in the shape of "Ω", two triangular grooves are arranged on the surface of the contact rod, the two triangular grooves are respectively communicated with the two installation grooves, and the edges of the triangular grooves coincide with the extension lines of the bottom edges of the installation grooves.
[0012] Optionally, the rotating assembly comprises a rotating rod rotatably arranged in the connecting pipe, the end of the contact rod close to the connecting pipe is provided with a through groove, the rotating rod is arranged in the through groove, and a transmission assembly is arranged between the through groove and the rotating rod.
[0013] Optionally, a rotating groove is arranged in the rotating rod, a rotating ring is fixedly connected to the surface of the connecting pipe, the rotating ring is matched with the rotating groove, and a rotating spring is fixedly arranged between the rotating ring and the rotating groove.
[0014] Optionally, the transmission assembly comprises a transmission shaft fixedly arranged on the surface of the rotating rod, a spiral groove is arranged in the contact rod, the spiral groove is communicated with the through groove, and the transmission shaft is matched with the spiral groove.
[0015] Optionally, a rotating ring and a reinforcing ring are fixedly connected to the surface of the buckle sleeve, the cross sections of the rotating ring and the reinforcing ring are both regular hexagons, and the area of the rotating ring is greater than the area of the reinforcing ring.
[0016] The application provides a pipe joint assembly, which comprises a buckle sleeve with a cross section in the shape of a right-angled trapezoid, the size of the cross section of the buckle sleeve near the middle of the connecting pipe is larger than the size of the other side, and the buckle sleeve is attached to a plurality of contact rods rotatably arranged at the end of the connecting pipe, so that when the buckle sleeve moves towards the middle of the connecting pipe, the distance of the plurality of contact rods from one end of the connecting pipe increases, at this time, the pipe to be connected can be placed between the contact rods and the connecting pipe, and the sealing ring on the surface of the buckle sleeve is used to maintain the sealing between the pipe to be connected and the connecting pipe, at this time, the sealing ring and the contact rods form two opposite forces to limit the movement of the pipe to be connected; when the buckle sleeve moves away from the connecting pipe, the distance of the plurality of contact rods from one end of the connecting pipe decreases, at this time, the pipe to be connected can be placed between the plurality of contact rods, and the contact rods and the buckle sleeve apply pressure to limit the pipe to be connected from separating from the connecting pipe; and the end of the connecting pipe has two different forms of fixing the pipe to be connected, which can be used to connect two pipes to be connected with different diameters, and can be fixed to pipes to be connected with different diameters which are smaller than the diameter of the buckle sleeve and larger than the diameter of the pipe to be connected which can be inserted into the contact rods, so that the application can be used in a wider range and has higher flexibility. The sealing groove is arranged on the surface of the buckle sleeve and is combined by the recessed groove and the sector groove, the sealing ring is arranged on the sealing groove, the sealing ring is stable and has a certain flexible space, the sealing ring is convenient to disassemble and assemble, the position of the pipe to be connected can be stabilized according to the shape of the recessed groove, the elastic ring is arranged between the mounting groove and the triangular groove, the elastic ring is convenient to install and has a redundant space, the shape of the elastic ring is limited to be "Ω", the contact area between the pipe to be connected and the elastic ring can be changed, the rotating rod is arranged between the connecting rod and the contact rod, the rotating rod can drive the contact rod to rotate, the rotating spring is arranged between the rotating rod and the connecting pipe, the rotating spring is not affected by other structures, and the position of the contact rod at the end of the connecting pipe is maintained. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 The application provides a connection diagram of the connecting pipe and the small-diameter pipe to be connected. Figure 2 The application provides a three-dimensional structure sectional view of the contact rod. Figure 3 The application provides Figure 2 The application provides a local structure enlarged view of A in the middle. Figure 4 The application provides a three-dimensional structure exploded view of the connecting mechanism. Figure 5 The application provides a connection diagram of the connecting pipe and the large-diameter pipe to be connected.
[0018] Marked as follows: 1, connecting pipe; 21, buckle sleeve; 22, sealing ring; 23, contact rod; 24, rotating spring; 25, elastic ring; 31, sealing groove; 32, mounting groove; 33, triangular groove; 41, rotating rod; 42, through groove; 43, rotating groove; 44, rotating ring; 45, transmission shaft; 46, spiral groove; 51, rotating ring; 52, reinforcing ring. DETAILED DESCRIPTION
[0019] The specific embodiments of the present application are described in detail below, but it should be understood that the scope of protection of the present application is not limited by the specific embodiments.
[0020] As Figures 1 to 5 shown, the pipe joint assembly provided by the embodiment of the present application comprises a connecting pipe 1 for connecting two pipes, The connecting pipe 1 includes but is not limited to a two-way pipe, and the two-way pipe is taken as an example in the description accompanying drawings; The connecting pipe 1 is provided with a connecting mechanism at the end thereof, and the connecting mechanism comprises: A buckle sleeve 21 is threadedly connected with the end of the connecting pipe 1, the cross section of the buckle sleeve 21 is in the shape of a right trapezoid, the size of the buckle sleeve 21 close to the middle of the connecting pipe 1 is larger than that of the other side, and a plurality of sealing rings 22 are detachably connected to the surface of the buckle sleeve 21; the plurality of sealing rings 22 are arranged at intervals on the side of the buckle sleeve 21 away from the connecting pipe 1; A plurality of contact rods 23 are rotationally arranged at the end of the connecting pipe 1, the plurality of contact rods 23 are arranged in an annular array at the end of the connecting pipe 1, a rotating spring 24 is fixedly arranged between the contact rod 23 and the connecting pipe 1 through a rotating assembly, and an elastic ring 25 is detachably connected between the plurality of contact rods 23; the contact rod 23 is attached to the buckle sleeve 21; In summary, the pipe joint assembly provided by the embodiment of the application comprises a buckle sleeve 21 with a cross section in the shape of a right-angled trapezoid, the size of the buckle sleeve 21 on the cross section near the middle of the connecting pipe 1 is greater than the size on the other side, and the buckle sleeve 21 is attached to a plurality of contact rods 23 rotatably arranged at the end of the connecting pipe 1, so that when the buckle sleeve 21 moves towards the middle of the connecting pipe 1, the distance of the plurality of contact rods 23 away from one end of the connecting pipe 1 increases, at this time, the pipe to be connected can be placed between the contact rods 23 and the connecting pipe 1, and the sealing ring 22 on the surface of the buckle sleeve 21 is used to maintain the sealing between the pipe to be connected and the connecting pipe 1, at this time, the sealing ring 22 and the contact rods 23 form two opposite forces to limit the movement of the pipe to be connected; when the buckle sleeve 21 moves away from one side of the connecting pipe 1, the distance of the plurality of contact rods 23 away from one end of the connecting pipe 1 decreases, at this time, the pipe to be connected can be placed between the plurality of contact rods 23, and the contact rods 23 and the buckle sleeve 21 apply pressure to limit the pipe to be connected from being separated from the connecting pipe 1; thus, the end of the connecting pipe 1 has two different forms of fixing the pipe to be connected, which can be used to connect two pipes to be connected with different diameters, and can be fixed to different diameter pipes within the diameter of the buckle sleeve 21 and outside the diameter of the pipe to be connected, the contact rods 23 can be inserted, the range of use can be wider and the flexibility can be stronger; In some specific embodiments, a plurality of sealing grooves 31 are arranged on the surface of the buckle sleeve 21, the sealing grooves 31 are matched with the sealing ring 22, the sealing grooves 31 comprise a recessed groove and a sector groove, the sector groove is attached to the surface of the sealing ring 22, the distance between the recessed groove and the middle of the connecting pipe 1 is greater than the distance between the sector groove and the middle of the connecting rod, and the end of the sector groove away from the recessed groove is made of elastic material; the combined groove of the recessed groove and the sector groove can stably install the sealing ring 22 on the buckle sleeve 21 in the extruded or natural state, the sealing ring 22 can be partially deformed into the recessed groove in the extruded state, the shape of the sealing ring 22 after extrusion can be further determined by the shape of the recessed groove, so as to ensure the close attachment of the sealing ring 22 to the pipe to be connected, and the sector groove can limit the independent movement of the sealing ring 22 in the natural state of the sealing ring 22, so that the sealing ring 22 is not easy to fall off after installation, and the elastic material part of the sector groove can be adjusted according to the actual shape of the pipe, so as to further improve the sealing performance; In some specific embodiments, two installation grooves 32 are opened on the surface of the contact rod 23, the two installation grooves 32 are symmetrically arranged relative to the contact rod 23, the installation grooves 32 are adapted to the elastic ring 25, the cross section of the elastic ring 25 is in the shape of "Ω", two triangular grooves 33 are opened on the surface of the contact rod 23, the two triangular grooves 33 are respectively communicated with the two installation grooves 32, and the edge of the triangular groove 33 coincides with the extension line of the bottom edge of the installation groove 32; the "Ω"-shaped elastic ring 25 is arranged, the non-horizontal position of the elastic ring 25 is in contact with the pipeline to be connected and can be extruded by the pipeline to be connected, thereby ensuring the sealing between the elastic ring 25 and the pipeline to be connected, and the elastic ring 25 is extruded, which can increase the friction between the elastic ring 25 and the pipeline to be connected; the triangular groove 33 is further opened at the bottom of the installation groove 32 on the surface of the contact rod 23 and adapted to the elastic ring 25, which increases the area of one side of the installation groove 32, and thereby when the elastic ring 25 is installed, the elastic ring 25 can be first pressed into the triangular groove 33, and then the elastic ring 25 is completely placed in the installation groove 32, the triangular groove 33 provides redundant space when the elastic ring 25 is installed, but after the elastic ring 25 is completely installed, the horizontal position is in the shape of a rectangle, and the elastic ring 25 will not be inserted into the triangular groove 33 automatically, thereby ensuring the position stability of the elastic ring 25 during use; In some specific embodiments, the rotating assembly includes a rotating rod 41 rotatably arranged in the connecting pipe 1, the contact rod 23 is arranged close to one end of the connecting pipe 1 and is provided with a through groove 42, the rotating rod 41 is arranged in the through groove 42, and the surface of the connecting pipe 1 is provided with a plurality of communication grooves adapted to the contact rod 23; that is, the end of the connecting pipe 1 is staggered with the contact rod 23, and through the contact between the contact rod 23 and the connecting pipe 1, the surface of the contact rod 23 is always in contact with the connecting pipe 1, and the rotating direction of the contact rod 23 is limited; The through groove 42 and the rotating rod 41 are provided with a transmission assembly, the rotating rod 41 is provided with a rotating groove 43, the connecting pipe 1 is fixedly connected with a rotating ring 44, the rotating ring 44 is adapted to the rotating groove 43, and the rotating spring 24 is fixedly arranged between the rotating ring 44 and the rotating groove 43; the rotating assembly is matched with the through groove 42 on the contact rod 23 through the rotating rod 41, so as to realize the flexible rotation of the contact rod 23 at the end of the connecting pipe 1 and maintain the position of the contact rod 23 at the end of the connecting pipe 1; the adaptation design of the rotating ring 44 and the rotating groove 43 further ensures the stable rotation of the rotating rod 41 in the connecting pipe 1, and the rotating spring 24 provides necessary elastic force, so that the contact rod 23 can return to the initial position when not subjected to external force, thereby enhancing the stability and reliability in use; In a further embodiment, the transmission assembly includes a transmission shaft 45 fixedly disposed on the surface of the rotating rod 41, and a spiral groove 46 is provided inside the contact rod 23. The spiral groove 46 communicates with the through groove 42, and the transmission shaft 45 is adapted to the spiral groove 46. When the snap sleeve 21 rotates on the surface of the connecting pipe 1, it can drive the contact rod 23 to rotate at the end of the connecting pipe 1. At this time, the rotating rod 41 will rotate under the action of the spiral groove 46 and the transmission shaft 45. The position of the rotating ring 44 inside the rotating groove 43 changes, thereby changing the state of the rotating spring 24. When the snap sleeve 21 reverses, the rotating spring 24 can drive the rotating rod 41 to reverse, thereby causing the contact rod 23 to reverse, maintaining the contact rod 23 and the snap sleeve 21 in contact. In some specific implementations, a rotating ring 51 and a reinforcing ring 52 are fixedly connected to the surface of the snap-fit sleeve 21. The cross-sections of the rotating ring 51 and the reinforcing ring 52 are both regular hexagonal, and the area of the rotating ring 51 is larger than that of the reinforcing ring 52. With the rotating ring 51 and the reinforcing ring 52 on the surface of the snap-fit sleeve 21, two regular hexagonal structures with different areas, when initially rotating the snap-fit sleeve 21, one can choose to hold the rotating ring 51 for easy application of force. After the pipe to be connected and the contact rod 23 are initially fixed, the reinforcing ring 52 can be rotated with a tool to increase the contact area between the contact rod 23 and the pipe to be connected, thus maintaining the stability between the pipe to be connected and the contact rod 23. Working principle of the invention: When installing the pipe to be connected and the connecting pipe 1, first, according to the diameter of the pipe to be connected, place the pipe to be connected between several contact rods 23 or between the contact rods 23 and the snap sleeve 21, and then rotate the snap sleeve 21 to make several contact rods 23 rotate in opposite directions. Rotate the snap sleeve 21 until all contact rods 23 are in contact with the pipe to be connected. If the pipe to be connected is located between the snap sleeve 21 and the contact rods 23, it is necessary to pull the pipe to be connected so that the pipe to be connected is in contact with the sealing ring 22. Then, use a tool to rotate the snap sleeve 21 to reinforce the position of the contact rods 23 and the pipe to be connected, and the installation is completed.
[0021] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.
Claims
1. A pipe joint assembly comprising a connecting pipe (1) for connecting two pipes, characterized in that The connecting pipe (1) end is provided with a connecting mechanism, the connecting mechanism comprises: The buckle sleeve (21) is screwed with the connecting pipe (1) end, the cross section of the buckle sleeve (21) is a right trapezoid, the size of the buckle sleeve (21) near the middle of the connecting pipe (1) is greater than the size of the other side; A plurality of sealing rings (22) are detachably connected to the surface of the buckle sleeve (21); A plurality of contact rods (23) are rotatably arranged at the end of the connecting pipe (1), a plurality of the contact rods (23) are arranged in an annular array at the end of the connecting pipe (1), the contact rod (23) and the connecting pipe (1) are fixedly provided with a rotating spring (24) through a rotating assembly, and a plurality of the contact rods (23) are detachably connected with an elastic ring (25); The contact rod (23) is attached to the buckle sleeve (21).
2. A pipe coupling assembly as defined in claim 1, wherein, A plurality of sealing grooves (31) are formed on the surface of the buckle sleeve (21), and the sealing grooves (31) are matched with the sealing rings (22).
3. A pipe joint assembly as defined in claim 2 wherein, The sealing groove (31) comprises a recessed groove and a fan-shaped groove, the fan-shaped groove is attached to the surface of the sealing ring (22), and the distance between the recessed groove and the middle of the connecting pipe (1) is greater than the distance between the fan-shaped groove and the middle of the connecting rod.
4. A pipe joint assembly as defined in claim 3 wherein, The end of the fan-shaped groove away from the recessed groove is made of elastic material.
5. A pipe coupling assembly as defined in claim 1, wherein, Two installation grooves (32) are formed on the surface of the contact rod (23), the two installation grooves (32) are symmetrically arranged relative to the contact rod (23), and the installation grooves (32) are matched with the elastic ring (25).
6. A pipe coupling assembly as defined in claim 5 wherein, The cross section of the elastic ring (25) is "Ω" shape, two triangular grooves (33) are formed on the surface of the contact rod (23), the two triangular grooves (33) are respectively communicated with the two installation grooves (32), and the edges of the triangular grooves (33) coincide with the extension lines of the bottom edges of the installation grooves (32).
7. A pipe coupling assembly as defined in claim 1 wherein, The rotating assembly comprises a rotating rod (41) rotatably arranged in the connecting pipe (1), the contact rod (23) is provided with a through groove (42) at one end near the connecting pipe (1), the rotating rod (41) is arranged in the through groove (42), and a transmission assembly is arranged between the through groove (42) and the rotating rod (41).
8. A pipe joint assembly as defined in claim 7 wherein, A rotating groove (43) is formed in the rotating rod (41), a rotating ring (44) is fixedly connected to the surface of the connecting pipe (1), the rotating ring (44) is matched with the rotating groove (43), and the rotating spring (24) is fixedly arranged between the rotating ring (44) and the rotating groove (43).
9. A pipe coupling assembly as defined in claim 7 wherein, The transmission assembly comprises a transmission shaft (45) fixedly arranged on the surface of the rotating rod (41), a spiral groove (46) is formed in the contact rod (23), the spiral groove (46) is communicated with the through groove (42), and the transmission shaft (45) is matched with the spiral groove (46).
10. A pipe coupling assembly as defined in claim 1 wherein, The surface of the buckle sleeve (21) is fixedly connected with a rotating ring (51) and a reinforcing ring (52), the cross sections of the rotating ring (51) and the reinforcing ring (52) are regular hexagons, and the area of the rotating ring (51) is greater than the area of the reinforcing ring (52).