Split rotary seal structure

Abstract

The utility model relates to split type sealing structure technical field discloses a split type rotary sealing structure, including end cover, the rear end of end cover is inserted with static ring no.

Description

Technical Field

[0001] This utility model relates to the field of split-type sealing structure technology, and in particular to a split-type rotary sealing structure. Background Technology

[0002] The split-type rotary seal structure is a novel mechanical seal design. Its core feature is that all components are designed as detachable structures, enabling rapid installation and maintenance through modular assembly. This structure offers significant advantages in the rotary seal field: The fully split design allows all components to be disassembled along a specific axial direction, enabling replacement of vulnerable parts without disassembling the reducer or bearing housing, reducing maintenance time to one-fifth of the original. This design significantly reduces labor costs and is particularly suitable for equipment operating under high loads and continuous operation.

[0003] An existing split-type rotary sealing structure, after the equipment is installed in a suitable position, does not make it easy to ensure the connection and sealing after the overall equipment is installed, thus affecting the convenience of equipment installation and the stability of the connection. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a split rotary sealing structure.

[0005] This utility model is achieved using the following technical solution: a split rotary sealing structure, including an end cap, a stationary ring 1 inserted into the rear end of the end cap, an O-ring fitted on the front of the stationary ring 1, a rotating ring 1 inserted into the rear end of the stationary ring 1, a sealing ring inserted into the rear end of the stationary ring 1, a rotating ring 2 snapped into the rear end of the sealing ring, a stationary ring 2 inserted into the rear end of the rotating ring 2, a spring inserted into the front of the stationary ring 2, and a mounting base snapped into the rear end of the stationary ring 2. The mounting base has an air source interface inside.

[0006] With the above technical solution, the O-ring serves as the main static seal and the sealing ring serves as a supplement to the dynamic seal. The two are arranged one after the other. Even if one seal fails, the other can still provide temporary protection to avoid sudden leakage accidents. The air source interface inside the mounting base can be connected to compressed air or inert gas to inject positive pressure into the sealing cavity, further improving the leak prevention capability. It is suitable for toxic, flammable media or high vacuum scenarios.

[0007] As a further improvement to the above solution, the front of the stationary ring 1 contacts the rear end surface of the end cap, and the moving ring 1 is located at the rear end of the end cap.

[0008] Through the above technical solution, the pairing design of dynamic ring one and stationary ring one, and dynamic ring two and stationary ring two, the friction force is distributed to multiple sealing surfaces, avoiding rapid wear of a single sealing surface due to long-term high-pressure contact.

[0009] As a further improvement to the above solution, the front side of the sealing ring contacts the rear end surface of the moving ring, and the sealing ring is located at the rear end of the O-ring.

[0010] The above technical solutions allow operators to directly observe the wear condition of O-rings and seals through transparent or semi-transparent end cap materials, enabling timely preventative maintenance.

[0011] As a further improvement to the above scheme, the number of springs is set to several, and the several springs are distributed equidistantly around the stationary ring two.

[0012] Through the above technical solution, the spring not only provides continuous clamping force, but also absorbs the vibration energy during equipment operation, reducing the impact damage of vibration on the sealing surface, and is especially suitable for high-speed or frequent start-stop conditions.

[0013] As a further improvement to the above solution, the front surface of the spring contacts the rear end surface of the sealing ring, and the moving ring one is located on the front surface of the stationary ring two.

[0014] As a further improvement to the above solution, the front surface of the stationary ring two contacts the rear surface of the moving ring two, and the moving ring two is located on the front surface of the mounting base.

[0015] As a further improvement to the above solution, a spring is provided on the front of the mounting base, and the first moving ring is located on the front of the second moving ring.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention forms a second dynamic seal by inserting a rotating ring into the rear end of a stationary ring and making contact with the front of the sealing ring. When the equipment is running, the rotating ring rotates synchronously with the rotating shaft, while the sealing ring continuously presses the rotating ring with elastic preload, ensuring the reliability of the seal during rotation. By setting a spring and a stationary ring, the gap changes of the sealing surface caused by wear or vibration can be automatically compensated, maintaining a long-term stable sealing pressure.

[0017] This utility model, by setting the entire sealing structure to consist of independent components such as end cap, stationary ring one, rotating ring one, sealing ring, rotating ring two, and stationary ring two, supports the replacement of worn parts as needed without the need for complete scrapping, thus reducing maintenance costs. The plug-in connection between stationary ring one and rotating ring one, and between rotating ring two and stationary ring two, allows the sealing structure to be flexibly adjusted in length along the axial direction to adapt to the installation space requirements of different equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the exploded structure of this utility model; Figure 3 This is a schematic diagram of the side anatomical structure of this utility model; Figure 4 This is a schematic diagram of the rear view structure of this utility model.

[0019] Explanation of key symbols: 1. End cap; 2. Stationary ring 1; 3. O-ring; 4. Rotating ring 1; 5. Sealing ring; 6. Rotating ring 2; 7. Stationary ring 2; 8. Spring; 9. Mounting base; 10. Air source interface. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0021] Example: Please combine Figure 1-4 This embodiment of a split-type rotary sealing structure includes an end cap 1, a stationary ring 2 inserted into the rear end of the end cap 1, an O-ring 3 fitted onto the front of the stationary ring 2, a rotating ring 4 inserted into the rear end of the stationary ring 2, a sealing ring 5 inserted into the rear end of the stationary ring 2, a rotating ring 6 snapped into the rear end of the sealing ring 5, a stationary ring 7 inserted into the rear end of the rotating ring 6, a spring 8 inserted into the front of the stationary ring 7, and a mounting base 9 snapped into the rear end of the stationary ring 7. The mounting base 9 has an air source interface 10 inside. By setting the rotating ring 4 to be inserted into the rear end of the stationary ring 2 and to contact the front of the sealing ring 5, a second dynamic seal is formed. When the equipment is running, the rotating ring 4 rotates synchronously with the rotating shaft, while the sealing ring 5 continuously presses the rotating ring 4 with elastic preload, ensuring the reliability of the seal under rotation. By setting the spring 8 and the stationary ring 7, the gap changes of the sealing surface caused by wear or vibration can be automatically compensated, maintaining a long-term stable sealing pressure.

[0022] O-ring 3 serves as the main static seal, while sealing ring 5 serves as a supplementary dynamic seal. The two are arranged one after the other, so that even if one seal fails, the other can still provide temporary protection to avoid sudden leakage accidents. The air source interface 10 inside the mounting base 9 can be connected to compressed air or inert gas to inject positive pressure into the sealing cavity, further improving the leak prevention capability. It is suitable for toxic, flammable media or high vacuum scenarios.

[0023] The front of the stationary ring 2 contacts the rear surface of the end cap 1, and the moving ring 4 is located at the rear end of the end cap 1.

[0024] The pairing design of rotating ring 4 with stationary ring 2 and rotating ring 6 with stationary ring 7 distributes friction force to multiple sealing surfaces, avoiding rapid wear of a single sealing surface due to long-term high-pressure contact.

[0025] As a further improvement to the above solution, the front of the sealing ring 5 contacts the rear end surface of the rotating ring 4. The sealing ring 5 is located at the rear end of the O-ring 3. By setting the entire sealing structure to consist of independent components such as the end cap 1, stationary ring 2, rotating ring 4, sealing ring 5, rotating ring 6, and stationary ring 7, it supports the replacement of worn parts as needed without the need for complete scrapping, thus reducing maintenance costs. The plug-in connection between stationary ring 2 and rotating ring 4, and between rotating ring 6 and stationary ring 7, allows the sealing structure to be flexibly adjusted in length along the axial direction to adapt to the installation space requirements of different equipment.

[0026] The transparent or semi-transparent end cap 1 material allows operators to directly observe the wear condition of the O-ring 3 and sealing ring 5, and arrange preventive maintenance in a timely manner.

[0027] The number of springs 8 is set to a certain number, and the springs 8 are distributed at equal intervals around the stationary ring 7.

[0028] Spring 8 not only provides continuous clamping force, but also absorbs vibration energy during equipment operation, reducing the impact damage of vibration on the sealing surface, making it especially suitable for high-speed or frequent start-stop conditions.

[0029] The front of the spring 8 contacts the rear surface of the sealing ring 5, and the moving ring 4 is located on the front of the stationary ring 7.

[0030] The front surface of stationary ring 2 7 contacts the rear end surface of moving ring 2 6, which is located on the front surface of mounting base 9.

[0031] The mounting base 9 has a spring 8 on its front side, and the moving ring 4 is located on the front side of the moving ring 6.

[0032] The implementation principle of a split rotary sealing structure in this application embodiment is as follows: by setting the rotating ring 4 to be inserted into the rear end of the stationary ring 2 and to contact the sealing ring 5 on the front, a second dynamic seal is formed. When the equipment is running, the rotating ring 4 rotates synchronously with the rotating shaft, while the sealing ring 5 continuously presses the rotating ring 4 through elastic pre-tightening force to ensure the reliability of the seal in the rotating state. By setting the spring 8 and the stationary ring 7, the gap change of the sealing surface caused by wear or vibration can be automatically compensated to maintain a long-term stable sealing pressure. By setting the entire sealing structure to be composed of independent components such as end cover 1, stationary ring 2, rotating ring 4, sealing ring 5, rotating ring 6, and stationary ring 7, it supports the replacement of worn parts as needed without the need for overall scrapping, reducing maintenance costs. The plug-in connection between the stationary ring 2 and the rotating ring 4, and between the rotating ring 6 and the stationary ring 7, allows the sealing structure to be flexibly adjusted in length along the axial direction to adapt to the installation space requirements of different equipment.

[0033] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A split-type rotary sealing structure, characterized in that, Includes an end cap (1), a stationary ring (2) is inserted into the rear end of the end cap (1), an O-ring (3) is fitted onto the front of the stationary ring (2), a moving ring (4) is inserted into the rear end of the stationary ring (2), a sealing ring (5) is inserted into the rear end of the stationary ring (2), a moving ring (6) is snapped onto the rear end of the sealing ring (5), a stationary ring (7) is inserted into the rear end of the moving ring (6), a spring (8) is inserted into the front of the stationary ring (7), and a mounting base (9) is snapped onto the rear end of the stationary ring (7). An air source interface (10) is provided inside the mounting base (9).

2. The split-type rotary sealing structure as described in claim 1, characterized in that: The front of the stationary ring (2) is in contact with the rear end surface of the end cap (1), and the moving ring (4) is located at the rear end of the end cap (1).

3. The split-type rotary sealing structure as described in claim 1, characterized in that: The front side of the sealing ring (5) contacts the rear end surface of the moving ring (4), and the sealing ring (5) is located at the rear end of the O-ring (3).

4. The split-type rotary sealing structure as described in claim 1, characterized in that: The number of springs (8) is set to several, and the several springs (8) are distributed equidistantly around the stationary ring two (7) as the center.

5. The split-type rotary sealing structure as described in claim 1, characterized in that: The front of the spring (8) is in contact with the rear end surface of the sealing ring (5), and the moving ring one (4) is located on the front of the stationary ring two (7).

6. The split-type rotary sealing structure as described in claim 1, characterized in that: The front surface of the stationary ring 2 (7) is in contact with the rear end surface of the moving ring 2 (6), and the moving ring 2 (6) is located on the front surface of the mounting base (9).

7. The split-type rotary sealing structure as described in claim 1, characterized in that: A spring (8) is provided on the front of the mounting base (9), and the first moving ring (4) is located on the front of the second moving ring (6).

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