Optimized rotary joint

Abstract

The utility model provides an optimized rotary joint which comprises a pipe body with a flowing pipe cavity, an inner sleeve with a through cavity and an outer sleeve with a through cavity, the inner sleeve is detachably assembled in the outer sleeve, the pipe body is connected in the inner sleeve in a penetrating mode to form rotary connection, an axial limiting assembly is arranged between the pipe body and the inner sleeve, and a sealing assembly is arranged between the pipe body and the inner sleeve. The outer sleeve is provided with an assembling structure used for being connected with other pipe fittings. The double-layer structure of the inner sleeve and the outer sleeve is adopted to achieve penetrating connection of the two pipe bodies, the whole structure is simple, disassembly and assembly operation is convenient, connection is reliable, the degree of freedom is high, and the problem that installation of pipe body connection is difficult is solved. The pipe body can freely rotate by 360 degrees in the inner sleeve, deformation or damage caused by rotation stress in the connecting process of the pipeline is avoided, and pressure loss and equipment faults caused by pipeline distortion can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a water pipe joint, in particular to an optimized rotary joint. Background Art

[0002] Existing methods of connecting joints to other pipe fittings usually use a single component through flange or threaded fit, which results in the pipe body being unable to freely adjust its rotation angle, causing inconvenience or even difficulty in installation.

[0003] This led to the design of a rotatable joint, a pipe connection device that allows the connected pipes to rotate relative to each other. It can be used to transport a variety of media, including gas, liquid, and oil. Its compact design allows for flange or threaded connections, allowing for efficient integration into the piping of various devices.

[0004] For example, Chinese patent document CN2122160U discloses a rotary joint consisting of a hollow shaft, a bearing housing, an end cap, a bearing, and a sealing ring. Its characteristics are that the bearing housing and the end cap are connected by bolts, two bearings are mounted side by side at one end of the bearing housing, and two sealing rings are mounted at the other end, and the tightness of the seals can be adjusted by bolts. The hollow shaft is mounted on the center hole of the bearing and the sealing ring, one end of which communicates with the concave hole of the end cap, and the other end is connected to the water outlet pipe through an external thread. The end cap has a water inlet threaded hole, and water flows out through the threaded hole and the end cap and hollow shaft. It has a simple structure, is easy to manufacture, is easy to maintain, has good sealing performance, and has a long service life. It is an ideal rotary joint for use in printing and dyeing manufacturers.

[0005] In the above technical solution, two bearings are used to realize the rotation function of the joint, which makes the overall joint costly and difficult to disassemble and maintain; at the same time, the overall joint is fixed by docking, resulting in poor coaxiality of the docking position and easy displacement or loosening. Utility Model Content

[0006] The purpose of the utility model is to propose an optimized rotary joint in view of the above problems existing in the existing technology.

[0007] The purpose of the utility model can be achieved through the following technical solutions: an optimized rotary joint, comprising a tube body with a circulation lumen, an inner sleeve with a through lumen and an outer sleeve with a through lumen, the inner sleeve being detachably assembled in the outer sleeve, the tube body being inserted into the inner sleeve to form a rotational connection, an axial limiting assembly being provided between the tube body and the inner sleeve, a sealing assembly being provided between the tube body and the inner sleeve, and an assembly structure for connecting other pipe fittings being provided on the outer sleeve.

[0008] In the above-mentioned optimized rotary joint, the axial limit assembly includes a retaining ring, an annular groove is provided on the outer wall of the port of the tube body, the retaining ring is embedded in the groove to form a fixation, and the end face of the inner sleeve abuts against the surface of the retaining ring to form an axial limit.

[0009] In the above-mentioned optimized rotary joint, the sealing assembly includes at least one sealing ring, at least one annular groove is recessed on the inner wall of the inner sleeve, the sealing ring is embedded in the annular groove, and the inner sleeve is sleeved on the tube body so that the sealing ring is tightly attached to the outer wall of the tube body.

[0010] In the above-mentioned optimized rotary joint, one end of the outer sleeve is open, and the other end is provided with an annular step edge toward the inner circumference, and the inner diameter opening of the step edge is the assembly opening.

[0011] In the above-mentioned optimized rotary joint, an internal thread is tapped on the inner peripheral wall of the assembly port, an external thread is tapped on the outer peripheral wall of the inner sleeve, and the outer sleeve is sleeved on the inner sleeve to form a threaded engagement assembly.

[0012] In the above-mentioned optimized rotary joint, an annular retaining edge is extended inwardly from the port of the assembly opening, and the end surface of the inner sleeve abuts against the retaining edge.

[0013] In the above-mentioned optimized rotary joint, the assembly structure includes an internal thread arranged on the inner peripheral wall of the outer sleeve, an external thread is arranged on the outer periphery of the pipe fitting, the pipe fitting extends into the outer sleeve from the opening to form a threaded engagement assembly, and the tube body and the inner sleeve extend into the tubular cavity of the pipe fitting.

[0014] In the above-mentioned optimized rotary joint, a sealing gasket is arranged on the step of the outer sleeve, and the sealing gasket is sleeved on the outer periphery of the inner sleeve. The pipe is inserted into the outer sleeve so that the pipe end presses the sealing gasket.

[0015] In the above-mentioned optimized rotary joint, the tube body is a straight tube or a curved tube, and the tube body extends out of the inner sleeve and the port of the outer sleeve to form an interface, and a threaded structure is provided on the interface.

[0016] Compared with the existing technology, this optimized rotary joint has the following beneficial effects:

[0017] 1. Free rotation connection: The inner and outer double-layer structure is adopted to realize the connection of the two pipes, thereby realizing the effect that the pipe can rotate. The overall structure is simple, the disassembly and assembly operation is convenient, the connection is reliable, and the degree of freedom is high, avoiding the installation difficulty of the pipe connection.

[0018] 2. Preventing Pipe Rotational Stress Accumulation: The optimized rotational structure allows the pipe to rotate 360° freely within the inner sleeve, preventing deformation or damage to the pipe caused by rotational stress during the connection process. This design is crucial for the straightening and long-term stable operation of the pipes, especially in equipment that requires frequent rotation. It can effectively reduce pressure loss and equipment failure caused by pipe distortion.

[0019] 3. Enhanced Axial Stability: The axial stability of the rotary joint is achieved by providing axial limiter components (such as retaining rings and ring grooves) and their interlocking fixation with the tube body and inner sleeve. This design effectively prevents axial separation of the inner sleeve and the tube body, avoiding loosening or failure of the rotary joint during use, and improving system reliability and safety.

[0020] 4. Convenient Assembly and Disassembly: The inner and outer sleeves are threaded together, providing easy assembly and disassembly. The versatility and stability of the threaded connection allow for easy installation and maintenance while ensuring a secure connection. This effectively ensures convenient maintenance and component replacement.

[0021] 5. Excellent structural compactness and stability: The inner sleeve, through cooperation with the retaining ring, retaining edge and other components, ensures its axial positioning, thereby improving the structural compactness and stability of the entire rotary joint. This design effectively reduces damage caused by loose installation or deformation, and increases the service life of the rotary joint under long-term high-pressure and high-frequency rotation conditions.

[0022] 6. Reliable sealing effect: The tight fit between the sealing gasket on the outer sleeve and the pipe end creates an effective sealing structure between the inner sleeve and the outer sleeve, preventing leakage at the pipe interface. The elasticity of the sealing gasket ensures that a good sealing effect can be maintained even under certain pressure or temperature changes, improving the working stability and long-term sealing performance of the rotary joint.

[0023] This optimized rotary joint's innovative design not only addresses multiple technical challenges, including sealing, rotation, and assembly ease, but also enhances system stability, durability, and compatibility. Through carefully designed axial limits, dual seals, threaded fit, and gaskets, the optimized rotary joint meets the demands of efficient, stable, and long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the cross-sectional structural diagram of the optimized rotary joint.

[0025] Figure 2 This is the three-dimensional structure diagram of the optimized rotary joint.

[0026] Figure 3 This is the main structural diagram of the optimized rotary joint.

[0027] In the figure, 1, pipe body; 1a, interface; 2, inner sleeve; 3, outer sleeve; 3a, step edge; 3b, retaining edge; 4, retaining ring; 5, sealing ring; 6, pipe fitting; 7, sealing gasket. DETAILED DESCRIPTION

[0028] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0029] like Figures 1 to 3 As shown, the optimized rotary joint includes a tube body 1 with a circulation lumen, an inner sleeve 2 with a through lumen and an outer sleeve 3 with a through lumen. The inner sleeve 2 can be detachably assembled in the outer sleeve 3. The tube body 1 is connected to the inner sleeve 2 to form a rotational connection. An axial limit assembly is provided between the tube body 1 and the inner sleeve 2. A sealing assembly is provided between the tube body 1 and the inner sleeve 2. An assembly structure for connecting other pipe fittings 6 is provided on the outer sleeve 3.

[0030] like Figure 1 As shown, the axial limit assembly includes a retaining ring 4. An annular groove is provided on the outer wall of the port of the tube body 1. The retaining ring 4 is embedded in the groove to form a fixed position. The end face of the inner sleeve 2 abuts against the surface of the retaining ring 4 to form an axial limit. The retaining ring 4 is made of rubber material and has a certain elasticity. A groove is provided at the port where the tube body 1 passes through the inner sleeve 2. The axial position of the retaining ring 4 is fixed by engaging with the retaining ring 4 through the groove. When assembling the tube body 1 and the inner sleeve 2, the retaining ring 4 can be removed first. After the inner sleeve 2 is sleeved on the outer periphery of the tube body 1, the retaining ring 4 can be installed in the groove. The retaining ring 4 forms a barrier to the end face of the inner sleeve 2 to prevent the two from separating.

[0031] like Figure 1 As shown, the sealing assembly includes at least one sealing ring 5. The inner wall of the inner sleeve 2 is recessed with at least one annular groove, within which the sealing ring 5 is embedded. The inner sleeve 2 is inserted over the tube body 1, ensuring that the sealing ring 5 is in close contact with the outer wall of the tube body 1. The sealing ring 5 is made of rubber and has a certain degree of elasticity. Two parallel annular grooves are arranged on the inner wall of the inner sleeve 2, each containing a sealing ring 5. This creates a double seal between the tube body 1 and the outer wall, ensuring a tight seal between the inner sleeve 2 and the tube body 1 while also enabling the self-rotation of the tube body 1.

[0032] like Figure 1 As shown, one end of the outer sleeve 3 is open, and the other end is provided with an annular step edge 3a toward the inner periphery, and the inner diameter opening of the step edge 3a is an assembly opening. The assembly opening is used to assemble the inner sleeve 2, and the open end is used to connect other pipe fittings 6.

[0033] like Figure 1As shown, the inner circumferential wall of the assembly opening is tapped with internal threads, the outer circumferential wall of the inner sleeve 2 is tapped with external threads, and the outer sleeve 3 is sleeved onto the inner sleeve 2 to form a threaded engagement assembly. The use of threaded engagement is both easy to process to ensure universality, and convenient for assembly and disassembly to improve operational convenience, while also ensuring the stability of the connection.

[0034] like Figure 1 As shown, an annular retaining edge 3b extends inward from the end of the assembly port, and the end face of the inner sleeve 2 abuts against the retaining edge 3b. When the tube body 1, inner sleeve 2, and outer sleeve 3 are assembled, one end of the inner sleeve 2 abuts against the retaining ring 4 and the other end abuts against the retaining edge 3b, thereby securing the inner sleeve 2 in the axial direction and improving the compactness and stability of the assembly.

[0035] like Figure 1 As shown, the assembly structure includes internal threads on the inner circumference of the outer sleeve 3 and external threads on the outer circumference of the pipe fitting 6. The pipe fitting 6 extends from the open end into the outer sleeve 3 to form a threaded engagement assembly. The pipe body 1 and the inner sleeve 2 extend into the lumen of the pipe fitting 6. The threaded engagement with other pipe fittings 6 provides both versatility and ease of assembly and disassembly for maintenance. The pipe body 1, inner sleeve 2, pipe fitting 6, and outer sleeve 3 are sequentially connected from the inside out to achieve pipeline connectivity. The pipe body 1 can also freely rotate 360° relative to the pipe fitting 6.

[0036] like Figure 1 As shown, a sealing gasket 7 is positioned along the stepped edge 3a of the outer sleeve 3 and is sleeved onto the outer periphery of the inner sleeve 2. The pipe 6 is inserted into the outer sleeve 3, pressing the sealing gasket 7 against the end of the pipe 6. The sealing gasket 7 is made of rubber and has a certain degree of elasticity. When the rotary joint is connected to the pipe 6, the end of the pipe 6 compresses the sealing gasket 7, causing it to deform. The sealing gasket 7 adheres closely to the wall and fills the gap, achieving a seal between the inner sleeve 2 and the outer sleeve 3.

[0037] like Figure 1 and 2 As shown, the tube body 1 is a straight or curved tube. The ends of the tube body 1 extending from the inner sleeve 2 and the outer sleeve 3 are configured as interface 1a, which is provided with a threaded structure. Interface 1a can be provided with either internal or external threads. Interface 1a is used to achieve threaded engagement with another pipe 6, allowing the integrated rotary joint to achieve a sealed connection between the two pipes 6.

[0038] The outer sleeve 3 in this optimized rotary joint is threadedly matched with other pipe fittings 6 to realize the connecting function of the joint; after the pipeline is connected, the pipe body 1 can rotate 360° in the inner sleeve 2, thereby facilitating the screwing operation during the installation process, and at the same time facilitating the straight arrangement of the pipeline and avoiding screwing stress in the pipeline.

[0039] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but will not deviate from the spirit of the present invention or exceed the defined scope. Although the present invention is described and described in detail in the drawings and the foregoing description, such illustrations and descriptions are considered to be illustrative or exemplary rather than restrictive. It should be understood that within the scope of the following claims, changes and modifications may be made by a person of ordinary skill. Specifically, the present invention covers additional embodiments having any combination of features from the different embodiments described above. Insofar as the expression "generally" or "substantially" is used, this patent application should be understood to disclose features and values that are also fully satisfied, i.e., without the aforementioned characterization as "generally" or "substantially".

[0040] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

Claims

1. An optimized rotary joint, comprising a tube body with a flow lumen, an inner sleeve with a through lumen, and an outer sleeve with a through lumen, characterized in that: The inner sleeve can be detachably assembled in the outer sleeve, the tube body is inserted into the inner sleeve to form a rotational connection, an axial limiting component is provided between the tube body and the inner sleeve, a sealing component is provided between the tube body and the inner sleeve, and an assembly structure for connecting other pipe fittings is provided on the outer sleeve.

2. The optimized rotary joint according to claim 1, characterized in that: The axial limiting assembly includes a retaining ring. An annular groove is provided on the outer wall of the port of the tube body. The retaining ring is embedded in the groove to be fixed. The end face of the inner sleeve abuts against the surface of the retaining ring to form an axial limit.

3. The optimized rotary joint according to claim 1, characterized in that: The sealing assembly includes at least one sealing ring. At least one annular groove is recessed on the inner wall of the inner sleeve. The sealing ring is embedded in the annular groove. The inner sleeve is sleeved on the tube body so that the sealing ring is tightly attached to the outer wall of the tube body.

4. The optimized rotary joint according to claim 1, characterized in that: One end of the outer sleeve is open, and the other end is provided with an annular step edge toward the inner circumference, and the inner diameter opening of the step edge is an assembly opening.

5. The optimized rotary joint according to claim 4, characterized in that: An internal thread is tapped on the inner peripheral wall of the assembly port, an external thread is tapped on the outer peripheral wall of the inner sleeve, and the outer sleeve is sleeved on the inner sleeve to form a threaded engagement assembly.

6. The optimized rotary joint according to claim 4, characterized in that: An annular retaining edge is formed on the end of the assembly port and extends inwardly to form the retaining edge, and the end surface of the inner sleeve abuts against the retaining edge.

7. The optimized rotary joint according to claim 4, characterized in that: The assembly structure includes an internal thread arranged on the inner peripheral wall of the outer sleeve, an external thread is arranged on the outer periphery of the pipe, the pipe is extended into the outer sleeve from the opening to form a threaded engagement assembly, and the pipe body and the inner sleeve are extended into the lumen of the pipe.

8. The optimized rotary joint according to claim 7, characterized in that: A sealing gasket is arranged along the step of the outer sleeve, and the sealing gasket is sleeved on the outer periphery of the inner sleeve. The pipe is inserted into the outer sleeve so that the pipe end presses the sealing gasket.

9. The optimized rotary joint according to claim 1, characterized in that: The tube body is a straight tube or a curved tube. The tube body extends out of the inner sleeve and is arranged at a port of the outer sleeve to form an interface, and a threaded structure is arranged on the interface.

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