Double-ring combined rotary sealing structure

Abstract

The utility model relates to a double-ring combined rotary sealing structure, which is applied to a gas circuit rotary joint, and is characterized by comprising a sealing ring, a shaft body and a shell, the shell is provided with a first gas hole and annular grooves, the annular grooves are arranged on two sides of the first gas hole, the annular grooves are provided with inclined surfaces, and the inclined surfaces are arranged on the shaft body. The shaft body is provided with an inclined face, the inclined face inclines in the direction from the annular grooves to the first air holes, the shaft body is sleeved with the sealing rings, when the shaft body is arranged on the shell, the sealing rings are located in the annular grooves, and each annular groove is provided with two sealing rings. The double-ring combined rotary sealing structure has the advantages of stability, reliability and long service life. Through double sealing and inclined plane design, the sealing effect is enhanced, the abrasion of the sealing rings is reduced, even if the performance of one sealing ring is reduced, the other sealing ring can maintain the sealing state, and the efficient work of the gas circuit rotating joint is ensured.

Description

Technical Field

[0001] The utility model relates to the field of gas path rotary joints, in particular to a double-circle combined rotary sealing structure. Background Art

[0002] Sealing performance has always been a key challenge in the design of gas circuit rotary joints. Traditional sealing structures often face problems such as poor sealing effect, severe wear and short life. These problems not only affect the performance of gas circuit rotary joints, but may also cause equipment failures and safety hazards. Therefore, developing a new type of rotary sealing structure to improve sealing performance and extend service life has become an urgent need in the industry. Utility Model Content

[0003] In view of the above situation, it is necessary to provide a double-ring combination rotary sealing structure that solves at least one of the above problems, which is applied to a gas path rotary joint, including: a sealing ring, a shaft body and a shell, the shell is provided with a first air hole and an annular groove, the annular groove is provided on both sides of the first air hole, the annular groove is provided with an inclined surface, the inclination direction of the inclined surface is the direction of the annular groove toward the first air hole, the sealing ring is sleeved on the shaft body, and when the shaft body is set in the shell, the sealing ring is located in the annular groove, and each annular groove has two sealing rings.

[0004] Preferably, it further comprises auxiliary holes, which are arranged between the first air holes.

[0005] Preferably, the shaft body is provided with a second air hole, the second air hole extends from one end of the shaft body to a side surface, and the second air hole is communicated with the first air hole.

[0006] Preferably, the first air hole and the second air hole are both provided with an air hole joint.

[0007] Preferably, a connecting plate is also provided, which is arranged at one end of the shaft body.

[0008] Preferably, the connection plate is provided with a positioning hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] 1. Sealing ring; 2. Shaft body; 3. Shell; 31. First air hole; 32. Annular groove; 321. Inclined surface; 4. Auxiliary hole; 5. Second air hole; 6. Air hole joint; 7. Connecting plate; 8. Positioning hole.

[0010] Figure 1 It is a structural schematic diagram of a double-ring combined rotary seal structure of an embodiment of the utility model.

[0011] Figure 2 It is a cross-sectional view of a double-ring combined rotary seal structure of an embodiment of the utility model.

[0012] Figure 3 It is an exploded view of the rotary seal structure of the double-ring combination according to the embodiment of the utility model.

[0013] Figure 4 yes Figure 2 Enlarged view of point A.

[0014] Figure 5 yes Figure 2 Enlarged view of point B. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the utility model more clear, the following is a further detailed description of the double-ring combination rotary seal structure of the utility model in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0016] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "center", "longitudinal", "lateral", "up", "down", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood by specific circumstances.

[0018] See also Figures 1 to 5The double-ring combined rotary sealing structure of the embodiment of the utility model is applied to a gas path rotary joint, comprising: a sealing ring 1, a shaft body 2 and a shell 3, wherein the shell 3 is provided with a first air hole 31 and an annular groove 32, wherein the annular groove 32 is provided on both sides of the first air hole 31, and the annular groove 32 is provided with an inclined surface 321, wherein the inclined surface 321 is inclined in the direction of the annular groove 32 toward the first air hole 31, and the sealing ring 1 is sleeved on the shaft body 2, and when the shaft body 2 is provided on the shell 3, the sealing ring 1 is located in the annular groove 32, and each annular groove 32 has two sealing rings 1.

[0019] In the above embodiment, when the shaft body 2 is placed in the housing 3, two sealing rings 1 are sleeved on the shaft body 2 and are located exactly in the annular grooves 32 on both sides, one is located in the plane of the annular groove, and the other is located in the inclined surface of the annular groove. The compression amount of the sealing ring in the plane is larger, and the compression amount of the sealing ring in the inclined surface 321 is smaller. At this time, when the airflow passes through the first air hole 31, the airflow will naturally flow to the annular groove 32, and produce an extrusion effect on the sealing ring 1 arranged there. This extrusion not only enhances the friction between the sealing ring 1 and the shaft body 2, but also makes the sealing ring 1 fit more tightly in the annular groove 32. It is worth mentioning that due to the presence of the inclined surface 321 in the annular groove 32, the sealing ring 1 close to the inclined surface 321 will move further toward the inclined surface 321 when squeezed by the airflow, thereby filling the space reserved by the inclined surface 321. At the same time, the sealing ring 1 far away from the inclined surface 321 will push the sealing ring 1 close to the inclined surface 321 to fit more closely on the inclined surface 321 under the effect of elastic extrusion, thereby achieving a double sealing effect. This double-ring combination of rotating sealing structures not only ensures the reliability of the seal, but also greatly extends the service life of the sealing ring 1. When the sealing ring 1 close to the inclined surface 321 loses some of its elasticity due to long-term extrusion, the sealing ring 1 far away from the inclined surface 321 can still continue to play the role of elastic extrusion, pushing the former to continue to maintain a sealed state. Such a design enables the entire sealing structure to maintain an efficient working state even when the performance of one sealing ring 1 decreases. In summary, the double-ring combination of rotating sealing structures in the embodiment of the utility model achieves a stable and reliable sealing effect in the gas path rotary joint through a clever structural design and a combination of double-ring seals.

[0020] Please refer to Figures 1 to 5 In another embodiment, it further includes an auxiliary hole 4 disposed between the first air holes 31 .

[0021] In the above embodiment, the auxiliary hole 4 is located between the first air holes 31. The main purpose of its design is to optimize the balance of gas flow and reduce vortex and noise that may be generated during gas flow.

[0022] Specifically, when the airflow passes through the first air hole 31, due to the characteristics of the gas flow and the pressure distribution, vortices may be formed between the air holes or noise may be generated. The existence of the auxiliary hole 4 is like a "diverter", which can disperse the airflow originally concentrated through the first air hole 31, reduce the concentration and impact of the airflow, and thus reduce the generation of vortices and noise. At the same time, the design of the auxiliary hole 4 can also increase the flow of airflow to a certain extent, and improve the efficiency of the entire air path system.

[0023] Please refer to Figures 1 to 5 In another embodiment, the shaft body 2 is provided with a second air hole 5 , the second air hole 5 extends from one end of the shaft body 2 to the side, and the second air hole 5 is connected to the first air hole 31 .

[0024] In the above embodiment, when the gas enters the interior of the shell 3 through the first air hole 31, it can continue to flow through the second air hole 5 on the shaft body 2, thereby achieving the continuity and efficiency of the air flow. This design ensures that the gas can flow unimpeded even during the rotation of the shaft body 2. At the same time, the presence of the second air hole 5 also helps to maintain the pressure of the gas flow stable. When the gas passes through the air hole, pressure fluctuations may occur due to changes in flow rate and resistance. The design of the second air hole 5 can balance this pressure fluctuation and ensure that the gas maintains a stable pressure state during the flow process. In summary, the second air hole 5 set on the shaft body 2 not only realizes the smooth flow of airflow, but also ensures the stability and efficiency of the gas flow.

[0025] Please refer to Figures 1 to 5 In another embodiment, both the first air hole 31 and the second air hole 5 are provided with an air hole joint 6.

[0026] In the above embodiment, the vent connector 6 ensures that the gas can stably and safely enter the interior of the housing 3 to form a smooth gas passage. At the same time, the vent connector 6 also has a sealing function, effectively preventing gas leakage at the interface, and ensuring the airtightness of the entire system.

[0027] Please refer to Figures 1 to 5 In another embodiment, a connecting plate 7 is further provided and arranged at one end of the shaft body 2.

[0028] In the above embodiment, it serves as a connection interface between the shaft body 2 and other components (such as a transmission device or a working device), ensuring that the shaft body 2 can stably and reliably cooperate with other components.

[0029] Please refer to Figures 1 to 5 In another embodiment, the connecting plate 7 is provided with a positioning hole 8.

[0030] In the above implementation, the role of the positioning hole 8 is mainly reflected in the installation and positioning process. When the shaft body 2 is connected with other components (such as a transmission device or a working device), the positioning hole 8 is used as a reference point to ensure the precise alignment of the shaft body 2 with other components.

[0031] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A double-ring combined rotary seal structure, applied to a gas circuit rotary joint, characterized in that: include: A sealing ring, a shaft body and a shell, wherein the shell is provided with a first air hole and an annular groove, the annular grooves are provided on both sides of the first air hole, the annular groove is provided with an inclined surface, the inclined surface is inclined in the direction of the annular groove toward the first air hole, the sealing ring is sleeved on the shaft body, and when the shaft body is set in the shell, the sealing ring is located in the annular groove, and each annular groove has two sealing rings.

2. The double-ring combined rotary seal structure according to claim 1, characterized in that: It also includes auxiliary holes, which are arranged between the first air holes.

3. The double-ring combined rotary seal structure according to claim 1, characterized in that: The shaft body is provided with a second air hole, the second air hole extends from one end of the shaft body to the side, and the second air hole is communicated with the first air hole.

4. The double-ring combined rotary seal structure according to claim 3, characterized in that: The first air hole and the second air hole are both provided with an air hole joint.

5. The double-ring combined rotary seal structure according to claim 1, characterized in that: A connecting plate is also provided, which is arranged at one end of the shaft body.

6. The double-ring combined rotary seal structure according to claim 5, characterized in that: The connection plate is provided with a positioning hole.

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