Oil-resistant compression seal

Abstract

The application relates to the field of sealing rings, in particular to an oil pressure-resistant sealing ring which comprises a ring body and a framework, a mounting ring cavity is coaxially arranged on the surface of the ring body and used for embedding the framework, the ring body comprises a connecting ring, a pressing ring and a sealing ring, the outer wall of the connecting ring is coaxially connected to the inner wall of the pressing ring, the inner wall of the connecting ring is coaxially connected to the outer wall of the sealing ring, the mounting ring cavity is located between the connecting ring, the pressing ring and the sealing ring, and the thicknesses of the pressing ring and the sealing ring are both greater than the thickness of the connecting ring. In the application, the ring body and the framework are arranged, the overall strength of the sealing ring is increased, the sealing ring is not prone to deformation under the action of external oil pressure, the sealing ring is not prone to contacting the retainer in the bearing and generating friction, and therefore the service life of the sealing ring is improved.

Description

Technical Field

[0001] This application relates to the field of sealing rings, and more particularly to a hydraulically resistant sealing ring. Background Technology

[0002] A sealing ring is a key mechanical component used to prevent fluid or gas leakage. By filling the gap between two contact surfaces, it forms an effective sealing barrier, ensuring that the medium inside the system does not leak out, while preventing external impurities from entering.

[0003] When the seal is applied to the gearbox main shaft, the seal on the main shaft bearing needs to block the external lubricating oil outside the bearing so that the lubricating oil can only pass through the center hole of the main shaft. However, the seal is easily deformed by the external oil pressure, which causes the seal to come into contact with the cage inside the bearing and generate friction, resulting in abnormal noise in the bearing and premature failure of the seal. Utility Model Content

[0004] To address the issue of easily deformed sealing rings under oil pressure, this application provides an oil pressure resistant sealing ring.

[0005] This application provides an oil-pressure resistant sealing ring, which adopts the following technical solution: A hydraulically resistant sealing ring includes a ring body and a skeleton. The surface of the ring body has a coaxially formed mounting ring cavity for the skeleton to be embedded. The ring body includes a connecting ring, a clamping ring, and a sealing ring. The outer ring wall of the connecting ring is coaxially connected to the inner ring wall of the clamping ring, and the inner ring wall of the connecting ring is coaxially connected to the outer ring wall of the sealing ring. The mounting ring cavity is located between the connecting ring, the clamping ring, and the sealing ring, and the thickness of both the clamping ring and the sealing ring is greater than the thickness of the connecting ring.

[0006] By adopting the above technical solution, the mounting ring cavity is located between the connecting ring, the clamping ring, and the sealing ring. The skeleton is embedded in the mounting ring cavity, increasing the overall strength of the sealing ring and making it less prone to deformation when subjected to external oil pressure. This ensures that the sealing ring does not come into contact with the cage inside the bearing, thus preventing friction and improving the service life of the sealing ring. At the same time, the thickness of both the clamping ring and the sealing ring is greater than that of the connecting ring. The robust structure of the clamping ring and the sealing ring provides higher compressive strength, preventing the sealing ring from being crushed or squeezed out of the sealing gap under high pressure, thereby improving the sealing reliability of the sealing ring.

[0007] Optionally, the frame includes a support portion, a connecting portion, a reinforcing portion, and a buffer portion. The inner ring wall of the connecting portion is coaxially connected to the outer ring wall of the support portion, the outer ring wall of the connecting portion is coaxially connected to the inner ring wall of the reinforcing portion, and the inner ring wall of the support portion is coaxially connected to the outer ring wall of the buffer portion. The connecting portion and the reinforcing portion are located on the abutting ring, the support portion is located on the connecting ring, and the buffer portion is located on the sealing ring.

[0008] By adopting the above technical solution, the connecting part is located between the reinforcing part and the supporting part. The reinforcing part transmits oil pressure evenly to the connecting ring through the connecting part, avoiding local stress concentration and wear of the sealing ring. The rigid connection of the supporting part ensures that the connecting ring maintains a stable shape under oil pressure, preventing excessive deformation or twisting of the connecting ring. In addition, the buffer part can absorb internal medium pressure fluctuations, reduce the impact on the connecting ring, and thus extend the service life of the sealing ring.

[0009] Optionally, the tilt height of the buffer portion decreases as the distance to the support portion decreases.

[0010] By adopting the above technical solution, the tilt height of the buffer part decreases as the distance to the support part decreases, so that when the sealing ring is subjected to oil pressure, the stress is evenly distributed along the surface of the buffer part, reducing the risk of local breakage or fatigue damage at the connection between the sealing ring and the connecting ring, thereby extending the service life of the sealing ring.

[0011] Optionally, a guide surface is provided at the connection between the connecting part and the support part, and the guide surface is in the shape of a circular arc protrusion.

[0012] By adopting the above technical solution, the guide surface is convex in the shape of an arc. The guide surface can guide the pressure to be evenly distributed along the guide surface, avoiding stress concentration at the connection between the connecting part and the support part. Under the action of oil pressure, the sealing ring can effectively reduce local pressure peaks, prevent the sealing ring from breaking or fatigue damage due to pressure concentration, and thus further extend the service life of the sealing ring.

[0013] Optionally, the sealing ring has a guide surface facing the end face of the abutment ring, and the inclination direction of the guide surface is parallel to the inclination direction of the buffer portion.

[0014] By adopting the above technical solution, the tilt direction of the guide surface and the tilt direction of the buffer part are parallel to each other, so that the oil pressure on the end face of the sealing ring can be smoothly transitioned along the guide surface during the transmission process, avoiding sealing failure caused by sudden changes in oil pressure, thereby extending the service life of the sealing ring.

[0015] Optionally, the inner wall of the sealing ring is coaxially provided with a deformation cavity.

[0016] By adopting the above technical solution, the deformation cavity provides a predetermined elastic deformation space for the sealing ring. When the sealing ring is subjected to external oil pressure, it can undergo controllable deformation along the axial or radial direction of the deformation cavity, rather than rigid compression, thereby improving the sealing stability of the sealing ring.

[0017] Optionally, the guide surface is evenly connected with multiple reinforcing ribs.

[0018] By adopting the above technical solution, multiple reinforcing ribs are evenly distributed on the guide surface. The reinforcing ribs provide additional rigid support for the sealing ring, preventing the sealing ring from being excessively deformed under high pressure or dynamic load of external oil pressure, thereby improving the service life of the sealing ring.

[0019] Optionally, the end face of the reinforcing rib is provided with a buffer surface, and the inclination height of the buffer surface increases as the distance to the guide surface decreases.

[0020] By adopting the above technical solution, the inclination height of the buffer surface increases as the distance to the guide surface decreases. When the sealing ring is subjected to external oil pressure, the buffer surface absorbs the deformation energy at different positions through height changes, thereby ensuring the stability of the tight contact between the inner ring wall of the sealing ring and the inner ring wall of the bearing.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The design of the ring body and skeleton increases the overall strength of the sealing ring, making it less prone to deformation when subjected to external oil pressure. This also ensures that the sealing ring does not come into contact with the cage inside the bearing, thus preventing friction and extending the service life of the sealing ring. 2. The setting of support, connecting part, reinforcing part and buffer part, the rigid connection of the support part ensures that the connecting ring maintains a stable shape under the action of oil pressure, and prevents the connecting ring from being excessively deformed or twisted. The buffer part can absorb the internal medium pressure fluctuation, reduce the impact on the connecting ring, and thus extend the service life of the sealing ring. 3. The guide surface design effectively reduces local pressure peaks under oil pressure, preventing seal ring breakage or fatigue damage caused by pressure concentration, thereby further extending the service life of the seal ring. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application.

[0023] Figure 2 This is a partial cross-sectional view of an embodiment of this application, mainly showing the skeleton.

[0024] Figure 3 yes Figure 2 The enlarged view at point A in the middle mainly shows the deformation cavity.

[0025] Figure 4 yes Figure 1 The enlarged view at point B mainly shows the reinforcing rib.

[0026] Explanation of reference numerals in the attached drawings: 1. Ring body; 11. Mounting ring cavity; 12. Connecting ring; 13. Anchoring ring; 14. Sealing ring; 141. Deformation cavity; 142. Guide surface; 2. Skeleton; 21. Support part; 211. Guide surface; 22. Connecting part; 23. Reinforcing part; 24. Buffer part; 3. Reinforcing rib; 31. Buffer surface. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0028] This application discloses an oil-pressure resistant sealing ring. (Refer to...) Figure 1 and Figure 2 The oil pressure resistant sealing ring includes a ring body 1 and a skeleton 2. A mounting ring cavity 11 for the skeleton 2 to be embedded is coaxially opened on one side of the ring body 1 along the axial direction. The skeleton 2 improves the overall strength of the ring body 1, making the sealing ring less prone to deformation when subjected to external oil pressure, and ensuring that the sealing ring does not come into contact with the cage in the bearing and generate friction, thereby improving the service life of the sealing ring.

[0029] Reference Figure 2 and Figure 3 The ring body 1 includes a connecting ring 12, a clamping ring 13, and a sealing ring 14. The outer ring wall of the connecting ring 12 is coaxially integrally formed and fixed to the inner ring wall of the clamping ring 13. The inner ring wall of the connecting ring 12 is coaxially integrally formed and fixed to the outer ring wall of the sealing ring 14. The inner ring wall of the sealing ring has a deformation cavity 141 coaxially formed. The outer ring wall of the clamping ring 13 is used to clamp against the inner wall of the outer ring sealing groove of the bearing to form a seal. The inner ring wall of the sealing ring 14 is used to clamp against the inner wall of the inner ring sealing groove of the bearing to form a seal.

[0030] Reference Figure 1 and Figure 2 The thickness of the clamping ring 13 and the sealing ring 14 in the axial direction are both greater than the thickness of the connecting ring 12 in the axial direction. The mounting ring cavity 11 is located between the connecting ring 12, the clamping ring 13 and the sealing ring 14. The opening of the mounting ring cavity 11 is located on the end face of the connecting ring 12 in the axial direction. The end face of the sealing ring 14 facing the clamping ring 13 is coaxially provided with a guide surface 142. The inclination height of the guide surface 142 decreases as the distance to the connecting ring 12 decreases.

[0031] Reference Figure 2 and Figure 4 The guide surface 142 is fixed with multiple reinforcing ribs 3 at even intervals. In this embodiment, the multiple reinforcing ribs 3 are evenly distributed in 40-60 equal parts on the entire circumference of the guide surface 142; this enhances the strength of the contact between the inner ring wall of the sealing ring and the inner ring sealing groove of the bearing, reduces wear on the inner ring wall of the sealing ring, and avoids leakage of lubricating oil pressure.

[0032] Reference Figure 2 and Figure 4Each of the opposite end faces of the adjacent reinforcing ribs 3 is provided with a buffer surface 31. The inclination height of the buffer surface 31 increases as the distance to the guide surface 142 decreases. When the sealing ring 14 is subjected to external oil pressure, the buffer surface 31 absorbs the deformation energy at different positions through the change in height, thereby ensuring the stability of the tight contact between the inner ring wall of the sealing ring 14 and the inner wall of the bearing inner ring sealing groove.

[0033] Reference Figure 2 The frame 2 includes a support part 21, a connecting part 22, a reinforcing part 23 and a buffer part 24. The inner ring wall of the connecting part 22 is coaxially fixed to the outer ring wall of the support part 21, and the outer ring wall of the connecting part 22 is coaxially fixed to the inner ring wall of the reinforcing part 23. The support part 21 and the reinforcing part 23 are located at opposite ends of the axis of the connecting part 22.

[0034] Reference Figure 2 The inner ring wall of the support part 21 is coaxially fixed to the outer ring wall of the buffer part 24. The connecting part 22 and the reinforcing part 23 are both located inside the clamping ring 13. The support part 21 is located inside the connecting ring 12, and the buffer part 24 is located inside the sealing ring 14. A guide surface 211 is provided at the connection between the connecting part 22 and the support part 21. The guide surface 211 is in the shape of a circular arc protrusion, and the axis of the guide surface 211 faces the axis of the support part 21. The tilt height of the buffer part 24 decreases as the distance to the support part 21 decreases, and the tilt direction of the buffer part 24 is parallel to the tilt direction of the guide surface 142.

[0035] The implementation principle of the oil pressure resistant sealing ring in this application embodiment is as follows: the mounting ring cavity 11 is located between the connecting ring 12, the clamping ring 13, and the sealing ring 14. The skeleton 2 is embedded in the mounting ring cavity 11, which increases the overall strength of the sealing ring, making it less prone to deformation when subjected to external oil pressure. This ensures that the sealing ring does not come into contact with the cage in the bearing and generate friction, thereby improving the service life of the sealing ring. At the same time, the thickness of the clamping ring 13 and the sealing ring 14 are both greater than the thickness of the connecting ring 12. The thick structure of the clamping ring 13 and the sealing ring 14 can provide higher pressure resistance, preventing the sealing ring from being crushed or squeezed out of the sealing gap under high pressure, thereby improving the sealing reliability of the sealing ring.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A hydraulically resistant sealing ring, characterized in that: The device includes a ring body (1) and a skeleton (2). The surface of the ring body (1) is coaxially provided with an installation ring cavity (11) for the skeleton (2) to be embedded. The ring body (1) includes a connecting ring (12), a clamping ring (13) and a sealing ring (14). The outer ring wall of the connecting ring (12) is coaxially connected to the inner ring wall of the clamping ring (13). The inner ring wall of the connecting ring (12) is coaxially connected to the outer ring wall of the sealing ring (14). The installation ring cavity (11) is located between the connecting ring (12), the clamping ring (13) and the sealing ring (14). The thickness of the clamping ring (13) and the thickness of the sealing ring (14) are both greater than the thickness of the connecting ring (12).

2. The oil-resistant sealing ring according to claim 1, characterized in that: The frame (2) includes a support part (21), a connecting part (22), a reinforcing part (23), and a buffer part (24). The inner wall of the connecting part (22) is coaxially connected to the outer wall of the support part (21). The outer wall of the connecting part (22) is coaxially connected to the inner wall of the reinforcing part (23). The inner wall of the support part (21) is coaxially connected to the outer wall of the buffer part (24). The connecting part (22) and the reinforcing part (23) are located on the clamping ring (13). The support part (21) is located on the connecting ring (12). The buffer part (24) is located on the sealing ring (14).

3. The oil-resistant sealing ring according to claim 2, characterized in that: The tilt height of the buffer section (24) decreases as the distance to the support section (21) decreases.

4. The oil-resistant sealing ring according to claim 2, characterized in that: The connection between the connecting part (22) and the supporting part (21) is provided with a guide surface (211), which is in the shape of a circular arc protrusion.

5. The oil-resistant sealing ring according to claim 3, characterized in that: The sealing ring (14) has a guide surface (142) on its end face facing the abutting ring (13), and the inclination direction of the guide surface (142) is parallel to the inclination direction of the buffer part (24).

6. The oil-resistant sealing ring according to claim 1, characterized in that: The inner wall of the sealing ring (14) is coaxially provided with a deformation cavity (141).

7. The oil-resistant sealing ring according to claim 5, characterized in that: The guide surface (142) is evenly connected with multiple reinforcing ribs (3).

8. The oil-resistant sealing ring according to claim 7, characterized in that: The end face of the reinforcing rib (3) is provided with a buffer surface (31), and the inclination height of the buffer surface (31) increases as the distance to the guide surface (142) decreases.

Images