High-sealing-performance center swivel joint

Abstract

The utility model provides a high leakproofness center swivel joint, including casing and swivel shaft, casing inner wall one end is provided with locating groove, swivel shaft one end is provided with locating ring, locating ring is installed in locating groove, casing one end is connected with a plurality of first bolt, casing one side is provided with reducing sleeve, the reducing sleeve is connected with the first bolt, the reducing sleeve is connected with the first bolt. The reducing sleeve is fixed to one side of the shell through a plurality of first bolts, a spring is arranged in the reducing sleeve, and one end of the spring is connected with a rubber plate; a limiting groove is formed in the middle of the inner wall of the shell, a limiting ring is arranged in the middle of the rotating shaft and located in the limiting groove, when the rotating shaft rotates, the positioning ring is in close fit with the positioning groove, axial movement is effectively prevented, and when mechanical shaking occurs, the spring and the rubber plate absorb vibration energy, so that the vibration effect is improved. Meanwhile, during vibration, the limiting ring slides in the limiting groove, impact force is buffered, it is guaranteed that equipment operates stably, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of rotary joints, and more particularly to a high-sealing center rotary joint. Background Technology

[0002] A rotary joint, also known as a swivel joint or rotary coupling, is a mechanical device used to transfer fluids, such as liquids or gases, in rotational motion. It allows fluids to be transferred through a rotating connection point without tangling or damaging the connecting pipeline. Rotary joints are widely used in various industrial fields. They are usually installed on equipment that requires continuous rotation, such as rotary tables, agitators, turntables, and conveying systems, to ensure that the equipment can continuously obtain the required fluid supply during rotation.

[0003] A Chinese patent document CN202120621417.5 describes a hydraulic central rotary joint capable of handling large flow rates of liquid. The joint includes a cylindrical cylinder and a rotary tube. An outer tube is rotatably mounted on the outer wall of the rotary tube. An annular plate is fixedly mounted on the upper wall of the cylindrical cylinder, and a first joint is fixedly mounted on the inner wall of the annular plate. A second joint is fixedly mounted on the lower wall of the rotary tube. Annular blocks are uniformly embedded in the inner wall of the outer tube. Cylindrical grooves are formed on the outer walls of the annular blocks. Fixing blocks are uniformly fixed on the outer walls of the outer tube, and screws are screwed to the outer ends of the fixing blocks. Grooves are uniformly formed on the inner walls of the annular blocks, and metal pillars are inserted into the inner sides of the grooves. This invention utilizes the structure of the annular blocks and metal pillars to allow smooth relative rotation between the rotary tube and the outer tube using a relatively small joint, thereby increasing the diameter of the internal passage of the joint and enabling the passage of larger flow rates of liquid.

[0004] However, the above-mentioned patent has certain defects in use. During the operation of the rotary joint, the mechanical vibration has a negative impact on the stability of the rotary shaft. This causes the contact area between the annular block and the metal column to generate friction and wear when vibrating, thereby increasing the friction force and affecting the smoothness of rotation. If it continues to work for a long time, it may cause jamming.

[0005] To address these issues, a high-sealing center rotary joint is proposed. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, this utility model provides a high-sealing center rotary joint.

[0007] This utility model is achieved using the following technical solution:

[0008] A high-sealing center rotary joint, comprising

[0009] The housing and the rotating shaft are provided with a positioning groove at one end of the inner wall of the housing and a positioning ring at one end of the rotating shaft. The positioning ring is installed in the positioning groove. A plurality of first bolts are connected to one end of the housing. An adapter sleeve is provided on one side of the housing. The adapter sleeve is fixed to one side of the housing by a plurality of first bolts. A spring is provided inside the adapter sleeve. One end of the spring is connected to a rubber plate.

[0010] A limiting groove is provided in the middle of the inner wall of the housing, and a limiting ring is provided in the middle of the rotating shaft, with the limiting ring located in the limiting groove.

[0011] The inner wall of the housing is provided with a first annular groove and a second annular groove on one side. The outer wall of the rotating shaft is provided with a plurality of sealing strips. The plurality of sealing strips are located in the first annular groove and the second annular groove, and the contact positions between the plurality of sealing strips and the first annular groove and the second annular groove are provided with a first outer compartment and a second outer compartment.

[0012] As a preferred embodiment of this utility model, a first outer pipe is provided on one side of the shell, and a second outer pipe is provided on the side of the shell away from the first outer pipe. The first outer pipe is connected to the first outer compartment, and the second outer pipe is connected to the second outer compartment.

[0013] As a preferred embodiment of this utility model, the rotary shaft is provided with a first inner chamber, a first oil passage is provided on one side of the first inner chamber, the output end of the first oil passage passes through the rotary shaft, and a plurality of first oil inlets are provided on the peripheral wall of the first inner chamber, the plurality of first oil inlets passing through the rotary shaft and connected to the first outer chamber.

[0014] As a preferred embodiment of the present invention, the rotary shaft is provided with a second inner chamber, the second inner chamber is located next to the first inner chamber, a second oil passage is provided on one side of the second inner chamber, the output end of the second oil passage passes through the rotary shaft, and a plurality of second oil inlets are provided on the peripheral wall of the second inner chamber, the plurality of second oil inlets pass through the rotary shaft and are connected to the second outer chamber.

[0015] As a preferred embodiment of the present invention, a third annular groove is provided on one side of the limiting groove, and a fourth annular groove is provided on the side of the limiting groove away from the third annular groove.

[0016] As a preferred embodiment of this utility model, an anti-wear ring is provided on one side of the limiting ring, the anti-wear ring is located in the third annular groove, and a dustproof ring is provided on the side of the limiting ring away from the anti-wear ring, the dustproof ring is located in the fourth annular groove.

[0017] As a preferred embodiment of this utility model, one end of the adapter sleeve is provided with a plurality of second bolts, and one side of the adapter sleeve is provided with an end cap, which is fixed to one side of the adapter sleeve by a plurality of second bolts.

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] 1. By providing a positioning groove at one end of the inner wall of the housing and a positioning ring at one end of the rotating shaft, the precise positioning of the rotating shaft and the housing is ensured. When the rotating shaft rotates, the positioning ring and the positioning groove fit tightly together, effectively preventing axial movement. At the same time, the limiting ring in the limiting groove further enhances the stability of the rotating shaft and reduces wear. When mechanical vibration occurs, the spring and rubber plate absorb the vibration energy, and the limiting ring slides in the limiting groove during vibration to buffer the impact force, ensuring smooth operation of the equipment and extending its service life.

[0020] 2. The interconnection between the first and second external pipes and the first and second external chambers, and the first and second internal chambers set inside the rotating shaft, are respectively supplied with oil through the first and second independent oil circuits, realizing independent circulation of the oil circuits, avoiding oil mixing, improving the efficiency of oil use, and reducing the risk of oil contamination.

[0021] 3. The dustproof ring located in the fourth annular groove effectively prevents external impurities from entering. The anti-wear ring in the third annular groove is located in the middle of the rotating shaft. When the rotating shaft rotates, the anti-wear ring in the third annular groove evenly distributes the pressure and reduces the wear rate. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the shell of this utility model;

[0023] Figure 2 This is an exploded view of the present invention;

[0024] Figure 3 This is a structural diagram of the adapter sleeve of this utility model;

[0025] Figure 4 This is a sectional view of the rotating shaft of this utility model;

[0026] Figure 5 This is an overall sectional view of the present invention;

[0027] In the diagram: 1. Housing; 2. Rotary shaft; 3. Positioning groove; 4. Positioning ring; 5. First oil inlet; 6. Second oil inlet; 7. First external pipe; 8. Second external pipe; 9. First oil passage; 10. Second oil passage; 11. First annular groove; 12. Second annular groove; 13. Sealing strip; 14. First outer chamber; 15. Second outer chamber; 16. First inner chamber; 17. Second inner chamber; 18. Third annular groove; 19. Fourth annular groove; 20. Anti-wear ring; 21. Dustproof ring; 22. Limiting groove; 23. Limiting ring; 24. Adapter sleeve; 25. First bolt; 26. Second bolt; 27. End cap; 28. Spring; 29. ​​Rubber plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] Example:

[0030] Please see Figures 1-5 A high-sealing center rotary joint, comprising:

[0031] The housing 1 and the rotating shaft 2 are provided. One end of the inner wall of the housing 1 is provided with a positioning groove 3, and one end of the rotating shaft 2 is provided with a positioning ring 4. The positioning ring 4 is installed in the positioning groove 3. One end of the housing 1 is connected with a plurality of first bolts 25. One side of the housing 1 is provided with an adapter sleeve 24. The adapter sleeve 24 is fixed to one side of the housing 1 by a plurality of first bolts 25. A spring 28 is provided inside the adapter sleeve 24. One end of the spring 28 is connected to a rubber plate 29.

[0032] The inner wall of the housing 1 is provided with a limiting groove 22 in the middle position, and the rotating shaft 2 is provided with a limiting ring 23 in the middle position. The limiting ring 23 is located in the limiting groove 22.

[0033] The inner wall of the housing 1 is provided with a first annular groove 11 and a second annular groove on one side of the limiting groove 22. The outer wall of the rotating shaft 2 is provided with a plurality of sealing strips 13. The plurality of sealing strips 13 are located in the first annular groove 11 and the second annular groove 12, and the contact positions between the plurality of sealing strips 13 and the first annular groove 11 and the second annular groove 12 are provided with a first outer compartment 14 and a second outer compartment 15.

[0034] In this embodiment, a rotating shaft 2 is provided inside the housing 1. A positioning groove 3 is provided at one end of the inner wall of the housing 1, and a positioning ring 4 is provided at one end of the rotating shaft 2. The positioning ring 4 is embedded in the positioning groove 3 to ensure stable operation of the rotating shaft 2 within the housing. Multiple first bolts 25 are connected to one end of the housing 1, and an adapter sleeve 24 is provided on one side of the housing 1. The adapter sleeve 24 is fixed by multiple first bolts 25. A spring 28 is provided inside the adapter sleeve 24, and the other end of the spring 28 is connected to a rubber plate 29 to provide a buffering effect. A limiting groove 22 is provided in the middle of the inner wall of the housing 1, and a limiting ring 23 is provided in the middle of the rotating shaft 2. The limiting ring 23 is embedded in the limiting groove 22 to ensure axial stability. In case of mechanical vibration... When in motion, the spring 28 and the rubber plate 29 absorb vibration energy. At the same time, the limiting ring 23 slides in the limiting groove 22 during vibration to buffer the impact force and ensure stable operation of the equipment. The inner wall of the housing 1 has a first annular groove 11 and a second annular groove 12 on one side of the limiting groove 22. The outer wall of the rotating shaft 2 has multiple sealing strips 13. The multiple sealing strips 13 are located in the first annular groove 11 and the second annular groove 12. The contact positions between the multiple sealing strips 13 and the first annular groove 11 and the second annular groove 12 are provided with a first outer chamber 14 and a second outer chamber 15. Under the action of the multiple sealing strips 13, the first outer chamber 14 and the second outer chamber 15 are independent sealing spaces, which effectively prevent the leakage of internal media.

[0035] Specifically, a first external pipe 7 is provided on one side of the housing 1, and a second external pipe 8 is provided on the side of the housing 1 away from the first external pipe 7. The first external pipe 7 is connected to the first outer compartment 14, and the second external pipe 8 is connected to the second outer compartment 15.

[0036] In this embodiment, a first external pipe 7 is provided on one side of the housing 1, and a second external pipe 8 is provided on the side of the housing 1 away from the first external pipe 7. The first external pipe 7 is connected to the first outer chamber 14, and the second external pipe 8 is connected to the second outer chamber 15, to ensure independent circulation of the medium and avoid cross-contamination. When the rotary shaft 2 rotates, the oil enters the first outer chamber 14 through the first external pipe 7, and the oil in the second outer chamber 15 enters the second outer chamber 15.

[0037] Specifically, the rotating shaft 2 is provided with a first inner chamber 16, and a first oil passage 9 is provided on one side of the first inner chamber 16. The output end of the first oil passage 9 passes through the rotating shaft 2. The peripheral wall of the first inner chamber 16 is provided with a plurality of first oil inlets 5. The plurality of first oil inlets 5 pass through the rotating shaft 2 and are connected to the first outer chamber 14.

[0038] In this embodiment, the rotating shaft 2 is provided with a first inner chamber 16, and a first oil passage 9 is provided on one side of the first inner chamber 16. The output end of the first oil passage 9 passes through the rotating shaft 2. A plurality of first oil inlets 5 are provided on the peripheral wall of the first inner chamber 16. The plurality of first oil inlets 5 pass through the rotating shaft 2 and are connected to the first outer chamber 14. When the oil flows into the first outer chamber 14, the oil is evenly distributed into the first inner chamber 16 at the same time as the rotating shaft 2 rotates. The oil in the first inner chamber 16 will be output through the first oil passage 9.

[0039] Specifically, the rotary shaft 2 is provided with a second inner chamber 17, which is located next to the first inner chamber 16. A second oil passage 10 is provided on one side of the second inner chamber 17, and the output end of the second oil passage 10 passes through the rotary shaft 2. The periphery of the second inner chamber 17 is provided with a plurality of second oil inlets 6, which pass through the rotary shaft 2 and are connected to the second outer chamber 15.

[0040] In this embodiment, the rotary shaft 2 is provided with a second inner chamber 17, which is located next to the first inner chamber 16. A second oil passage 10 is provided on one side of the second inner chamber 17, and the output end of the second oil passage 10 passes through the rotary shaft 2. The peripheral wall of the second inner chamber 17 is provided with a plurality of second oil inlets 6, which pass through the rotary shaft 2 and are connected to the second outer chamber 15. When the oil from the other side flows into the second outer chamber 15, the oil is evenly distributed into the second inner chamber 17 at the same time as the rotary shaft 2 rotates. The oil in the second inner chamber 17 will be output through the second oil passage 10, ensuring that the oil on both sides circulates independently and does not interfere with each other.

[0041] Specifically, a third annular groove 18 is provided on one side of the limiting groove 22, and a fourth annular groove 19 is provided on the side of the limiting groove 22 away from the third annular groove 18.

[0042] In this embodiment, a third annular groove 18 is provided on one side of the limiting groove 22, and a fourth annular groove 19 is provided on the side of the limiting groove 22 away from the third annular groove 18. The third annular groove 18 is located in the middle of the housing 1, and the fourth annular groove 19 is close to the edge of the housing 1.

[0043] Specifically, an anti-wear ring 20 is provided on one side of the limiting ring 23, the anti-wear ring 20 is located in the third annular groove 18, and a dustproof ring 21 is provided on the side of the limiting ring 23 away from the anti-wear ring 20, the dustproof ring 21 is located in the fourth annular groove 19.

[0044] In this embodiment, an anti-wear ring 20 is provided on one side of the limiting ring 23. The anti-wear ring 20 is located in the third annular groove 18. When the rotating shaft 2 rotates, the anti-wear ring 20 in the third annular groove 18 evenly distributes the pressure and reduces the wear rate. A dustproof ring 21 is provided on the side of the limiting ring 23 away from the anti-wear ring 20. The dustproof ring 21 is located in the fourth annular groove 19, which effectively isolates dust and extends the service life of the component.

[0045] Specifically, one end of the adapter sleeve 24 is provided with a plurality of second bolts 26, and one side of the adapter sleeve 24 is provided with an end cap 27, which is fixed to one side of the adapter sleeve 24 by a plurality of second bolts 26.

[0046] In this embodiment, the adapter sleeve 24 is provided with a plurality of second bolts 26 at the end away from the first bolt 25, and an end cap 27 is provided on one side of the adapter sleeve 24. The end cap 27 is fixed to one side of the adapter sleeve 24 by the plurality of second bolts 26, which facilitates disassembly and installation.

[0047] The principle of this utility model is as follows: When the rotary shaft 2 is installed in the housing 1, the adapter sleeve 24 is fixed to one side of the housing 1 by multiple first bolts 25, and then the end cover 27 is fixed to one side of the adapter sleeve 24 by multiple second bolts 26. After assembly, when the rotary shaft 2 rotates in the housing 1, the positioning ring 4 and the positioning groove 3 are tightly engaged to effectively prevent axial movement. When mechanical vibration occurs, the spring 28 and the rubber plate 29 absorb the vibration energy. At the same time, when vibration occurs, the limiting ring 23 slides in the limiting groove 22 to buffer the impact force, ensure the smooth operation of the equipment, and extend its service life.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A high-sealing center rotary joint, characterized in that, include: The housing and the rotating shaft are provided with a positioning groove at one end of the inner wall of the housing and a positioning ring at one end of the rotating shaft. The positioning ring is installed in the positioning groove. A plurality of first bolts are connected to one end of the housing. An adapter sleeve is provided on one side of the housing. The adapter sleeve is fixed to one side of the housing by a plurality of first bolts. A spring is provided inside the adapter sleeve. One end of the spring is connected to a rubber plate. A limiting groove is provided in the middle of the inner wall of the housing, and a limiting ring is provided in the middle of the rotating shaft, with the limiting ring located inside the limiting groove; The inner wall of the housing is provided with a first annular groove and a second annular groove on one side. The outer wall of the rotating shaft is provided with a plurality of sealing strips. The plurality of sealing strips are located in the first annular groove and the second annular groove, and the contact positions between the plurality of sealing strips and the first annular groove and the second annular groove are provided with a first outer compartment and a second outer compartment.

2. The high-sealing center rotary joint according to claim 1, characterized in that: The shell has a first external pipe on one side and a second external pipe on the side of the shell away from the first external pipe. The first external pipe is connected to the first outer compartment and the second external pipe is connected to the second outer compartment.

3. A high-sealing center rotary joint according to claim 2, characterized in that: The rotating shaft is provided with a first inner chamber, and a first oil passage is provided on one side of the first inner chamber. The output end of the first oil passage passes through the rotating shaft. The peripheral wall of the first inner chamber is provided with a plurality of first oil inlets, and the plurality of first oil inlets pass through the rotating shaft and are connected to the first outer chamber.

4. A high-sealing center rotary joint according to claim 3, characterized in that: The rotary shaft is provided with a second inner chamber, which is located next to the first inner chamber. A second oil passage is provided on one side of the second inner chamber, and the output end of the second oil passage passes through the rotary shaft. The peripheral wall of the second inner chamber is provided with a plurality of second oil inlets, which pass through the rotary shaft and are connected to the second outer chamber.

5. A high-sealing center rotary joint according to claim 4, characterized in that: A third annular groove is provided on one side of the limiting groove, and a fourth annular groove is provided on the side of the limiting groove away from the third annular groove.

6. A high-sealing center rotary joint according to claim 5, characterized in that: An anti-wear ring is provided on one side of the limiting ring, and the anti-wear ring is located in the third annular groove. A dustproof ring is provided on the side of the limiting ring away from the anti-wear ring, and the dustproof ring is located in the fourth annular groove.

7. A high-sealing center rotary joint according to claim 6, characterized in that: The adapter sleeve has multiple second bolts at one end and an end cap on one side, which is fixed to the adapter sleeve by multiple second bolts.

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