A rubber sealing ring with high sealing performance

Abstract

The utility model discloses a kind of high sealing rubber sealing rings, including main body elastic buffer layer and sealing ring, main body elastic buffer layer is arranged on sealing ring, main body elastic buffer layer inner diameter is provided with sealing layer, main body elastic buffer layer outside is provided with wear-resistant layer, several annular convex strips are arranged on sealing layer inner diameter outer wall, annular groove is formed between annular convex strip.The utility model is provided with sealing layer, through annular convex strip structure and trapezoidal section design, multiple sealing contact points can be formed, and self-tightening force is generated, fluid leakage is effectively prevented, wear-resistant layer is set, the wear resistance of sealing ring is improved, sealing failure problem caused by friction and abrasion is reduced, by setting main body elastic buffer layer, it can absorb external pressure and vibration, improve the fatigue resistance of sealing ring, set trapezoidal section, so that sealing ring is more easily adhered with sealing groove in installation process, installation difficulty and installation force are reduced, and installation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of rubber ring technology, specifically to a high-sealing rubber sealing ring. Background Technology

[0002] Rubber rings are mainly used in mechanical seals, pipe connections, hydraulic systems, pneumatic systems and other fields with high sealing performance requirements to prevent fluid (gas, liquid) leakage and the intrusion of external impurities;

[0003] Traditional rubber seals are prone to deformation and wear during practical use, leading to decreased sealing performance and leakage. Furthermore, some rubber seals have structural design limitations, making them unsuitable for complex and variable working environments, resulting in unstable sealing performance. Some seals also require significant installation force, increasing installation difficulty and potentially further compromising sealing performance if improperly installed. Therefore, there is an urgent need to design a high-sealing rubber seal to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a high-sealing rubber sealing ring to overcome the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-sealing rubber sealing ring includes a main elastic buffer layer and a sealing ring. The main elastic buffer layer is disposed on the sealing ring. A sealing layer is disposed on the inner diameter of the main elastic buffer layer. A wear-resistant layer is disposed on the outer side of the main elastic buffer layer. A plurality of annular protrusions are disposed on the outer wall of the inner diameter of the sealing layer, and annular grooves are formed between the annular protrusions.

[0007] In a preferred embodiment of this utility model, elastic edging is provided on both sides of the main elastic buffer layer, a slot 1 is provided on the inner diameter of the main elastic buffer layer, and a slot 2 is provided on the outer wall of the main elastic buffer layer.

[0008] In a preferred embodiment of this utility model, the sealing layer is snapped into the slot, and the annular protrusion is semi-circular.

[0009] In a preferred embodiment of this utility model, the wear-resistant layer is snapped into the second slot, and the cross-section of the wear-resistant layer is a rectangular rubber ring.

[0010] In a preferred embodiment of this utility model, the several annular protrusions on the sealing layer can tightly fit the sealing surface under sealing pressure, forming multiple sealing contact points.

[0011] In a preferred embodiment of this utility model, the sealing ring has a trapezoidal cross-sectional shape and can generate a certain self-tightening force during installation.

[0012] In a preferred embodiment of this utility model, the main elastic buffer layer, sealing layer and wear-resistant layer are bonded together with sealant to form a whole.

[0013] In the above technical solution, the high-sealing rubber sealing ring provided by this utility model has the following beneficial effects:

[0014] (1) By setting a sealing layer, multiple sealing contact points can be formed through the annular convex strip structure and trapezoidal cross section design, and self-tightening force can be generated to effectively prevent fluid leakage and significantly improve sealing performance.

[0015] (2) By setting a wear-resistant layer, the wear resistance of the sealing ring is improved, and the sealing failure caused by friction and wear is reduced. By setting a main elastic buffer layer, it can play a buffering role, which can absorb external pressure and vibration, reduce the impact on the sealing layer, and improve the fatigue resistance of the sealing ring.

[0016] (3) By setting a trapezoidal cross section, the self-tightening force generated by the trapezoidal cross section structure makes it easier for the sealing ring to fit with the sealing groove during installation, reducing the installation difficulty and installation force, improving installation efficiency, and also reducing sealing problems caused by improper installation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a perspective view of the sealing ring structure provided in an embodiment of a high-sealing rubber sealing ring of this utility model.

[0019] Figure 2 This is a partial cross-sectional view of the sealing ring structure provided in an embodiment of a high-sealing rubber sealing ring of this utility model.

[0020] Figure 3 This is a cross-sectional view of the sealing ring structure provided in an embodiment of a high-sealing rubber sealing ring of this utility model.

[0021] Figure 4 This invention provides an embodiment of a high-sealing rubber sealing ring. Figure 3 Enlarged view of a portion of the structure.

[0022] 1. Main body elastic buffer layer; 11. Elastic edging; 12. Slot 1; 13. Slot 2; 2. Sealing layer; 21. Annular protrusion; 22. Annular groove; 3. Wear-resistant layer; 4. Sealing ring. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] like Figure 1-4 As shown in the figure, the present invention provides a high-sealing rubber sealing ring, including a main elastic buffer layer 1 and a sealing ring 4. The main elastic buffer layer 1 is disposed on the sealing ring 4. A sealing layer 2 is disposed on the inner diameter of the main elastic buffer layer 1. A wear-resistant layer 3 is disposed on the outer side of the main elastic buffer layer 1. A plurality of annular protrusions 21 are disposed on the outer wall of the inner diameter of the sealing layer 2, and annular grooves 22 are formed between the annular protrusions 21.

[0025] In this embodiment, the main elastic buffer layer 1 is set on the sealing ring 4 and is made of high-elasticity EPDM rubber, which has good flexibility and fatigue resistance. Both sides of the main elastic buffer layer 1 are provided with elastic edging 11. The elastic edging 11 is made of the same rubber material as the main elastic buffer layer 1 and is integrally formed by a special molding process. It can not only effectively buffer external pressure and vibration, but also prevent the edges of the main elastic buffer layer 1 from wearing and tearing during long-term use. The inner diameter of the main elastic buffer layer 1 is provided with a first groove 12, which can accurately engage with the sealing layer 2. The outer wall of the main elastic buffer layer 1 is provided with a second groove 13, which provides a stable foundation for the installation of the wear-resistant layer 3.

[0026] In this embodiment, a sealing layer 2 is provided on the inner diameter of the main elastic buffer layer 1. The sealing layer 2 is made of fluororubber, which has excellent corrosion resistance and high temperature resistance, and is suitable for a variety of complex working environments. Several annular protrusions 21 are provided on the outer wall of the inner diameter of the sealing layer 2. The annular protrusions 21 will closely fit the sealing surface to form multiple sealing contact points, which are like multiple lines of defense to effectively prevent fluid leakage. Annular grooves 22 are formed between the annular protrusions 21. The annular grooves 22 cooperate with each other to store a small amount of sealing medium, forming a liquid film or gas film, which plays a role in lubrication and auxiliary sealing, further improving the sealing effect.

[0027] Specifically, the sealing layer 2 is snapped into the slot 12 to ensure that it will not shift during use and always maintain a good sealing effect. The annular protrusion 21 is semi-circular. This shape not only increases the contact area between the sealing layer 2 and the sealing surface, but also produces elastic deformation under sealing pressure.

[0028] In this embodiment, a wear-resistant layer 3 is provided on the outer side of the main elastic buffer layer 1. The wear-resistant layer 3 is made of ultra-high molecular weight polyethylene rubber, which has extremely high wear resistance and tear resistance. The wear-resistant layer 3 is snapped into the second groove 13. The cross-section of the wear-resistant layer 3 is a rectangular rubber ring, which can be tightly snapped into the second groove 13. The wear-resistant layer 3 can not only resist external friction and wear, and protect the internal main elastic buffer layer 1 and sealing layer 2, but also enhance the overall structural strength of the sealing ring 4 to a certain extent.

[0029] In this embodiment, the several annular protrusions 21 on the sealing layer 2 can fit tightly against the sealing surface under the sealing pressure to form multiple sealing contact points. The annular protrusions 21 will undergo elastic deformation to further compress the sealing surface and form multiple sealing contact points, effectively cutting off the fluid leakage channel.

[0030] In this embodiment, the sealing ring 4 has a trapezoidal cross-sectional shape. During installation, the sealing ring 4 can generate a certain self-tightening force. This self-tightening force not only reduces the installation difficulty but also ensures good sealing performance under different working conditions.

[0031] In this embodiment, the main elastic buffer layer 1, the sealing layer 2, and the wear-resistant layer 3 are bonded together with sealant to form a whole, thereby ensuring that the sealing ring 4 can stably and reliably perform high sealing performance in practical applications.

[0032] Working steps: 1. Utilize the trapezoidal cross-section structure of the sealing ring 4 to install it into the corresponding sealing position. During the installation process, the trapezoidal sealing ring 4 will generate a certain self-tightening force due to compression, which initially fixes the position of the sealing ring 4 and makes it relatively stable with the installation component.

[0033] 2. When subjected to sealing pressure, several semi-circular annular protrusions 21 on the sealing layer 2 will undergo elastic deformation and fit tightly against the sealing surface. The annular grooves 22 between the annular protrusions 21 can store a small amount of sealing medium, forming a liquid film or gas film, which plays a role in lubrication and auxiliary sealing. At the same time, the annular protrusions 21 form multiple sealing contact points, which greatly enhances the sealing effect.

[0034] 3. The main elastic buffer layer 1 utilizes its own elastic properties to absorb and disperse these external forces, protect the sealing layer 2 and the wear-resistant layer 3, extend the service life of the sealing ring 4, and at the same time provide a certain elasticity to improve the sealing effect of the sealing layer 2.

[0035] Fourth, the wear-resistant layer 3 is snapped into the groove 13 on the outer wall of the main elastic buffer layer 1. The wear-resistant layer 3, with its own wear resistance, withstands external friction, reduces the wear of the main elastic buffer layer 1 and the sealing layer 2, and ensures that the sealing ring 4 can maintain good sealing performance during long-term use.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-sealing rubber sealing ring, comprising a main elastic buffer layer (1) and a sealing ring (4), characterized in that, The main elastic buffer layer (1) is disposed on the sealing ring (4). The inner diameter of the main elastic buffer layer (1) is provided with a sealing layer (2). The outer side of the main elastic buffer layer (1) is provided with a wear-resistant layer (3). A plurality of annular protrusions (21) are provided on the outer wall of the inner diameter of the sealing layer (2). Annular grooves (22) are formed between the annular protrusions (21).

2. The high-sealing rubber sealing ring according to claim 1, characterized in that, The main elastic buffer layer (1) has elastic edging (11) on both sides, and a slot 1 (12) is opened in the inner diameter of the main elastic buffer layer (1), and a slot 2 (13) is opened on the outer wall of the main elastic buffer layer (1).

3. The high-sealing rubber sealing ring according to claim 2, characterized in that, The sealing layer (2) is snapped into the slot (12), and the annular protrusion (21) is semi-circular.

4. The high-sealing rubber sealing ring according to claim 2, characterized in that, The wear-resistant layer (3) is snapped into the slot two (13), and the cross-section of the wear-resistant layer (3) is a rectangular rubber ring.

5. A high-sealing rubber sealing ring according to claim 1, characterized in that, The several annular protrusions (21) on the sealing layer (2) can fit tightly against the sealing surface under sealing pressure to form multiple sealing contact points.

6. A high-sealing rubber sealing ring according to claim 1, characterized in that, The sealing ring (4) has a trapezoidal cross-sectional shape and can generate a certain self-tightening force during installation.

7. A high-sealing rubber sealing ring according to claim 1, characterized in that, The main elastic buffer layer (1), sealing layer (2) and wear-resistant layer (3) are bonded together with sealant to form a whole.

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