High-pressure rotary joint

Abstract

The utility model discloses a high-pressure rotating joint which comprises an upper joint rotating body and a lower joint rotating body which are sleeved up and down, the upper joint rotating body and the lower joint rotating body can rotate relatively, the top end of the lower joint rotating body extends into the upper joint rotating body, a flange plate is arranged at the bottom end of the lower joint rotating body, and the bottom end of the lower joint rotating body is located outside the upper joint rotating body. A cover plate is arranged on the upper connector rotating body and fixedly connected with the lower connector rotating body. The high-pressure rotary joint solves the problems that an existing high-pressure rotary joint is complex in structure, and fixing elements need to be added.

Description

Technical Field

[0001] This utility model belongs to the technical field of high-pressure pipeline connection devices, and relates to high-pressure rotary joints. Background Technology

[0002] High-pressure rotary joints, as sealed rotary connectors for transporting high-pressure media, serve as sealing devices for the connection between high-pressure liquid entering and exiting a rotating device from one side of a pipeline. They typically consist of a housing, seals, bearings, and other components. Through precise design and manufacturing, they maintain stable connection and transmission performance during rotation. These joints are widely used in liquid, gas, and various other media transmission systems.

[0003] The technical principle of rotary joints lies primarily in their unique sealing structure and movement mechanism. By employing reliable sealing technology, rotary joints effectively prevent media leakage, ensuring the safety and stability of the production process. Simultaneously, their flexible rotation design allows them to maintain high-efficiency transmission performance under various complex operating conditions, significantly improving production efficiency.

[0004] Abroad, rotary joints have been used since their successful development in the United States in the 1930s. The seals inside can be made of metal, graphite, or rubber. To maximize service life, foreign joints often incorporate multiple seals, ensuring that if one seal leaks, another will follow. This extends the product's lifespan. However, the compact and complex manufacturing process makes maintenance inconvenient. Utility Model Content

[0005] The purpose of this invention is to provide a high-pressure rotary joint, which solves the problem that existing high-pressure rotary joints have complex structures and require additional fixing components.

[0006] The technical solution adopted by this utility model is a high-pressure rotary joint, including an upper rotary body and a lower rotary body that are sleeved together. The upper rotary body and the lower rotary body can rotate relative to each other. The top end of the lower rotary body extends into the upper rotary body, and the bottom end is set as a flange. The bottom end of the lower rotary body is located outside the upper rotary body. A cover plate is provided on the upper rotary body, and the cover plate is fixedly connected to the lower rotary body.

[0007] The features of this utility model also include:

[0008] The rotating body on the connector is in the shape of two hollow cylinders, with the outer diameter of the upper hollow cylinder being smaller than that of the lower hollow cylinder.

[0009] The part of the lower rotating body located inside the upper rotating body of the joint is in the shape of two hollow cylinders, with the outer diameter of the upper hollow cylinder being smaller than that of the lower hollow cylinder.

[0010] The upper half of the rotating body of the connector has a shoulder on its inner wall of a hollow cylinder, and the top of the lower rotating body of the connector abuts against the shoulder on the inner wall of the upper rotating body of the connector.

[0011] A bearing is installed between the portion of the lower rotating body located inside the upper rotating body of the joint and the inner wall of the upper rotating body of the joint.

[0012] A first annular groove is provided on the outer wall of the connector near the top, and a sealing gasket is provided in the first annular groove. The sealing gasket is located on the outer wall of the connector and the inner wall of the connector.

[0013] A second annular groove is provided on the outer wall of the rotating body of the connector near the bottom of the rotating body. A sealing ring is provided in the second annular groove, and the sealing ring is located on the outer wall of the rotating body and the inner wall of the rotating body.

[0014] The cover plate and the lower rotating body of the connector are connected by a double-ended stud, and both the cover plate and the lower rotating body of the connector are connected to the double-ended stud by threads.

[0015] The inner wall of the lower rotating body of the joint is threaded, and the inner wall of the upper rotating body of the joint is threaded.

[0016] The beneficial effects of this utility model are:

[0017] This utility model of a high-pressure rotary joint allows the upper and lower rotating bodies of the joint to rotate relative to each other. Furthermore, due to the damping of the sealing gasket and the limiting effect of the cover plate on the upper rotating body, the upper and lower rotating bodies are prevented from separating, ensuring reliable sealing. This not only reduces wear on the sealing components and improves the service life of the joint, but also features a simple structure, ease of processing and production, and convenient installation and fixing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the high-pressure rotary joint of this utility model;

[0019] Figure 2 This is a half-sectional view of the high-pressure rotary joint of this utility model;

[0020] Figure 3 This is a front view of the rotating body under the connector in this utility model.

[0021] In the diagram, 1. Lower rotating body of the connector, 2. Sealing ring, 3. Bearing, 4. Double-ended stud, 5. Cover plate, 6. Upper rotating body of the connector, 7. Sealing gasket. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the following description of this utility model, the terms "first, second, third" are used only to distinguish similar objects and do not represent a specific order of objects. It is understood that "first, second, third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0024] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this invention is for descriptive purposes only and is not intended to limit the scope of the invention.

[0025] Example 1

[0026] This embodiment provides a high-pressure rotary joint, including an upper rotary body 6 and a lower rotary body 1 sleeved together. The inner wall of the lower rotary body 1 is threaded, and the upper inner wall of the upper rotary body 6 is threaded. The upper rotary body 6 and the lower rotary body 1 can rotate relative to each other. The top end of the lower rotary body 1 extends into the upper rotary body 6, and the bottom end is a flange. The flange is used to fix the position of the high-pressure rotary joint of this embodiment, and the bottom end of the lower rotary body 1 is located outside the upper rotary body 6. A cover plate 5 is provided on the upper rotary body 6, and the cover plate 5 is fixedly connected to the lower rotary body 1.

[0027] This embodiment represents only a preferred implementation of the high-pressure rotary joint of this utility model. Any rotary joint designed with similar technical features to this utility model will fall within the protection scope of the high-pressure rotary joint of this utility model.

[0028] Example 2

[0029] This embodiment provides a high-pressure rotary joint, including an upper rotary body 6 and a lower rotary body 1, which are sleeved together. The upper rotary body 6 is shaped like two hollow cylinders, with the outer diameter of the upper hollow cylinder being smaller than that of the lower hollow cylinder. The portion of the lower rotary body 1 located inside the upper rotary body 6 is also shaped like two hollow cylinders, with the outer diameter of the upper hollow cylinder being smaller than that of the lower hollow cylinder. The cylindrical shape is easy to process and manufacture, resulting in high production efficiency.

[0030] The upper rotating body 6 and the lower rotating body 1 of the connector can rotate relative to each other. The top end of the lower rotating body 1 extends into the upper rotating body 6 of the connector, and the bottom end is set as a flange. The bottom end of the lower rotating body 1 is located outside the upper rotating body 6 of the connector. A cover plate 5 is provided on the upper rotating body 6 of the connector, and the cover plate 5 is fixedly connected to the lower rotating body 1 of the connector.

[0031] This embodiment represents only a preferred implementation of the high-pressure rotary joint of this utility model. Any rotary joint designed with similar technical features to this utility model will fall within the protection scope of the high-pressure rotary joint of this utility model.

[0032] Example 3

[0033] This embodiment provides a high-pressure rotary joint, including an upper rotary body 6 and a lower rotary body 1, which are sleeved together. The upper rotary body 6 is shaped like two hollow cylinders, with the outer diameter of the upper hollow cylinder being smaller than that of the lower hollow cylinder. The portion of the lower rotary body 1 located inside the upper rotary body 6 is also shaped like two hollow cylinders, with the outer diameter of the upper hollow cylinder being smaller than that of the lower hollow cylinder.

[0034] The upper rotating body 6 and the lower rotating body 1 of the connector can rotate relative to each other. The top end of the lower rotating body 1 extends into the upper rotating body 6. The upper half of the hollow cylindrical inner wall of the upper rotating body 6 is provided with a shoulder. The top end of the lower rotating body 1 abuts against the shoulder on the inner wall of the upper rotating body 6. The shoulder plays a positioning role for the lower rotating body 1. The bottom end of the lower rotating body 1 is provided with a flange, and the bottom end of the lower rotating body 1 is located outside the upper rotating body 6. The upper rotating body 6 is provided with a cover plate 5, which is fixedly connected to the lower rotating body 1.

[0035] This embodiment represents only a preferred implementation of the high-pressure rotary joint of this utility model. Any rotary joint designed with similar technical features to this utility model will fall within the protection scope of the high-pressure rotary joint of this utility model.

[0036] Example 4

[0037] This embodiment provides a high-pressure rotary joint, including an upper rotary body 6 and a lower rotary body 1, which are sleeved together. The upper rotary body 6 is shaped like two hollow cylinders, with the outer diameter of the upper hollow cylinder being smaller than that of the lower hollow cylinder. The portion of the lower rotary body 1 located inside the upper rotary body 6 is also shaped like two hollow cylinders, with the outer diameter of the upper hollow cylinder being smaller than that of the lower hollow cylinder.

[0038] A bearing 3 is provided between the portion of the lower rotating body 1 located inside the upper rotating body 6 and the inner wall of the upper rotating body 6. The upper rotating body 6 and the lower rotating body 1 can rotate relative to each other in the circumferential direction. The top end of the lower rotating body 1 extends into the upper rotating body 6, and the bottom end is set as a flange. The bottom end of the lower rotating body 1 is located outside the upper rotating body 6. A cover plate 5 is provided on the upper rotating body 6, and the cover plate 5 is fixedly connected to the lower rotating body 1.

[0039] This embodiment represents only a preferred implementation of the high-pressure rotary joint of this utility model. Any rotary joint designed with similar technical features to this utility model will fall within the protection scope of the high-pressure rotary joint of this utility model.

[0040] Example 5

[0041] This embodiment provides a high-pressure rotary joint, including an upper rotary body 6 and a lower rotary body 1, which are sleeved together. The upper rotary body 6 is shaped like two hollow cylinders, with the outer diameter of the upper hollow cylinder being smaller than that of the lower hollow cylinder. The portion of the lower rotary body 1 located inside the upper rotary body 6 is also shaped like two hollow cylinders, with the outer diameter of the upper hollow cylinder being smaller than that of the lower hollow cylinder.

[0042] A bearing 3 is provided between the portion of the lower rotating body 1 located inside the upper rotating body 6 and the inner wall of the upper rotating body 6. The upper rotating body 6 and the lower rotating body 1 can rotate relative to each other. The top end of the lower rotating body 1 extends into the upper rotating body 6, and the bottom end is set as a flange. The bottom end of the lower rotating body 1 is located outside the upper rotating body 6. A cover plate 5 is provided on the upper rotating body 6, and the cover plate 5 is fixedly connected to the lower rotating body 1.

[0043] A first annular groove is formed on the outer wall of the rotating body 6 near the top, and a sealing gasket 7 is placed in the first annular groove. The sealing gasket 7 is located on the outer wall and the inner wall of the rotating body 6. A second annular groove is formed on the outer wall of the rotating body 6 near the bottom, and a sealing ring 2 is placed in the second annular groove. The sealing ring 2 is located on the outer wall and the inner wall of the rotating body 6. The sealing gasket 7 and the sealing ring 2 are located above and below the bearing 3, respectively, which serve to seal and protect the bearing 3.

[0044] This embodiment represents only a preferred implementation of the high-pressure rotary joint of this utility model. Any rotary joint designed with similar technical features to this utility model will fall within the protection scope of the high-pressure rotary joint of this utility model.

[0045] Example 6

[0046] This embodiment provides a high-pressure rotary joint, including an upper rotary body 6 and a lower rotary body 1 sleeved together. The upper rotary body 6 and the lower rotary body 1 can rotate relative to each other. The top end of the lower rotary body 1 extends into the upper rotary body 6, and the bottom end is set as a flange. The bottom end of the lower rotary body 1 is located outside the upper rotary body 6. A cover plate 5 is provided on the upper rotary body 6. The cover plate 5 is fixedly connected to the lower rotary body 1. The cover plate 5 and the lower rotary body 1 are connected by a double-ended stud 4. Both the cover plate 5 and the lower rotary body 1 are threadedly connected to the double-ended stud 4.

[0047] This embodiment represents only a preferred implementation of the high-pressure rotary joint of this utility model. Any rotary joint designed with similar technical features to this utility model will fall within the protection scope of the high-pressure rotary joint of this utility model.

[0048] Example 7

[0049] This embodiment provides a high-pressure rotary joint, such as Figure 1 As shown, the connector includes an upper rotating body 6 and a lower rotating body 1, which are fitted together. The inner wall of the lower rotating body 1 is threaded, and the upper inner wall of the upper rotating body 6 is threaded.

[0050] The upper rotating body 6 of the connector is in the shape of two hollow cylinders, and the outer diameter of the upper half of the hollow cylinder of the upper rotating body 6 is smaller than the outer diameter of the lower half of the hollow cylinder. The part of the lower rotating body 1 located inside the upper rotating body 6 of the connector is in the shape of two hollow cylinders, and the outer diameter of the upper half of the hollow cylinder is smaller than the outer diameter of the lower half of the hollow cylinder. The inner wall of the upper half of the hollow cylinder of the upper rotating body 6 of the connector is provided with a shoulder, and the top of the lower rotating body 1 of the connector abuts against the shoulder of the inner wall of the upper rotating body 6 of the connector.

[0051] like Figure 2 As shown, a bearing 3 is provided between the portion of the lower rotating body 1 located inside the upper rotating body 6 and the inner wall of the upper rotating body 6. The upper rotating body 6 and the lower rotating body 1 can rotate relative to each other. The top end of the lower rotating body 1 extends into the upper rotating body 6, and the bottom end is set as a flange. The bottom end of the lower rotating body 1 is located outside the upper rotating body 6. Except for the location of the bearing 3, the outer side wall of the lower rotating body 1 is in contact with the inner side wall of the upper rotating body 6. Figure 3 As shown, a first annular groove is provided on the outer wall of the rotating body 6 near the top, and a sealing gasket 7 is provided in the first annular groove. The sealing gasket 7 is located on the outer wall and the inner wall of the rotating body 6. A second annular groove is provided on the outer wall of the rotating body 6 near the bottom, and a sealing ring 2 is provided in the second annular groove. The sealing ring 2 is located on the outer wall and the inner wall of the rotating body 6.

[0052] A cover plate 5 is provided on the rotating body 6 of the connector. The shape of the cover plate 5 matches the shape of the top of the hollow cylinder of the lower half of the rotating body 6. That is, the cover plate 5 is stuck on the top of the hollow cylinder of the lower half of the rotating body 6 by setting a step, which plays a positioning role for the rotating body 6 of the connector and prevents the rotating body 6 of the connector and the lower rotating body 1 of the connector from separating. The cover plate 5 and the lower rotating body 1 of the connector are connected by a double-ended stud. Both the cover plate 5 and the lower rotating body 1 of the connector are connected to the double-ended stud by threads.

[0053] The thread on the inner wall of the lower rotating body 1 is used to connect to the pipe on one side, and the thread on the upper inner wall of the upper rotating body 6 is used to connect to the pipe on the other side. The medium to be transmitted enters the inner cavity of the lower rotating body 1 through the pipe and flows out from the inner cavity of the upper rotating body 6 and the pipe on the other side. The two pipes can rotate relative to each other, which is suitable for high-pressure medium transmission.

[0054] This embodiment represents only a preferred implementation of the high-pressure rotary joint of this utility model. Any rotary joint designed with similar technical features to this utility model will fall within the protection scope of the high-pressure rotary joint of this utility model.

[0055] The high-pressure rotary joint provided by this utility model has been described in detail above. Specific examples have been used to illustrate the implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the structure and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A high-pressure rotary joint, characterized in that, The device includes an upper rotating body (6) and a lower rotating body (1) that are fitted together. The upper rotating body (6) and the lower rotating body (1) can rotate relative to each other. The top end of the lower rotating body (1) extends into the upper rotating body (6), and the bottom end is set as a flange. The bottom end of the lower rotating body (1) is located outside the upper rotating body (6). A cover plate (5) is provided on the upper rotating body (6), and the cover plate (5) is fixedly connected to the lower rotating body (1).

2. The high-pressure rotary joint according to claim 1, characterized in that, The rotating body (6) on the connector is in the shape of two hollow cylinders, and the outer diameter of the upper half of the hollow cylinder is smaller than that of the lower half of the hollow cylinder.

3. The high-pressure rotary joint according to claim 1, characterized in that, The part of the lower rotating body (1) located inside the upper rotating body (6) of the connector is in the shape of two hollow cylinders, and the outer diameter of the upper hollow cylinder is smaller than the outer diameter of the lower hollow cylinder.

4. The high-pressure rotary joint according to claim 3, characterized in that, The upper half of the hollow cylindrical inner wall of the upper rotating body (6) of the connector is provided with a shoulder, and the top of the lower rotating body (1) of the connector abuts against the shoulder of the inner wall of the upper rotating body (6).

5. The high-pressure rotary joint according to claim 1, characterized in that, A bearing (3) is provided between the portion of the lower rotating body (1) located inside the upper rotating body (6) of the connector and the inner wall of the upper rotating body (6).

6. The high-pressure rotary joint according to claim 5, characterized in that, The outer wall of the rotating body (6) on the connector is provided with a first annular groove near the top, and a sealing gasket (7) is provided in the first annular groove. The sealing gasket (7) is located on the outer wall of the rotating body (6) on the connector and the inner wall of the rotating body (6) on the connector.

7. The high-pressure rotary joint according to claim 5, characterized in that, A second annular groove is provided on the outer wall of the rotating body (6) near the bottom end of the rotating body (6), and a sealing ring (2) is provided in the second annular groove. The sealing ring (2) is located on the outer wall of the rotating body (6) and the inner wall of the rotating body (6).

8. The high-pressure rotary joint according to claim 1, characterized in that, The cover plate (5) and the lower rotating body (1) of the connector are connected by a double-ended stud (4). The cover plate (5) and the lower rotating body (1) of the connector are both connected to the double-ended stud (4) by threads.

9. The high-pressure rotary joint according to claim 1, characterized in that, The inner wall of the lower rotating body (1) of the connector is provided with threads, and the upper inner wall of the upper rotating body (6) of the connector is provided with threads.

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