Special-shaped outer sealing ring

Abstract

This utility model discloses an irregularly shaped external sealing ring, including a sealing ring body and a connecting ring. Beneficial effects: This utility model features a connecting ring and a side tube. During installation, one end of the side tube is inserted into the outside of the flange, and the inner wall of the side tube slides against the edge of the flange. Then, rotating the side tube rotates the connecting ring, aligning the bolt holes on the connecting ring surface with the bolt holes on the flange surface, allowing it to be mated with another flange. During mating, as the fixing bolts are tightened, the two flanges compress the sealing ring body, deforming it to seal any gaps, thus completing the seal. This device achieves rapid positioning and temporary fixing of the sealing ring body through the sleeve connection between the side tube and the flange, facilitating subsequent bolt fixing between flanges and improving operational convenience. Furthermore, the absence of bolt holes on the surface of the sealing ring body results in higher integrity, reduces stress concentration, and improves stability and durability.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring technology, specifically to an irregularly shaped external sealing ring. Background Technology

[0002] A sealing ring is a device used to prevent the leakage of liquids or gases. It is typically made of elastic materials and serves a sealing function. The choice of material is crucial to its sealing performance and service life; the material's properties directly affect the sealing ring's performance.

[0003] Sealing rings are widely used in the industrial sector, where pipes are frequently connected via flanges. External sealing rings are required between flanges for sealing. Traditional flanges use external sealing rings with bolt holes corresponding to the flange surface. During installation, the external sealing ring must first be fitted onto the outside of the flange boss, and then the bolt holes on the sealing ring surface must be rotated to align it. However, since the external sealing ring is elastically fitted onto the flange boss, the friction between the gasket and the boss makes adjusting the gasket angle very difficult, affecting installation convenience. Further improvements are needed. Furthermore, the simple structure of the gasket can easily deform during use, creating gaps and leading to leaks, making self-repair difficult. The stability of its use can also be further improved. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an irregularly shaped external sealing ring, which has the advantages of convenient installation and good anti-seepage performance, thereby solving the problems mentioned in the background technology.

[0006] (II) Technical Solution

[0007] To achieve the advantages of convenient installation and good anti-seepage performance, the specific technical solution adopted by this utility model is as follows: A special-shaped external sealing ring includes a sealing ring body and a connecting ring. The sealing ring body is made of nitrile rubber, a common sealing ring material. The edge of the sealing ring body is provided with a side groove, which is arranged in a ring and centered along the height direction of the sealing ring body. Both sides of the sealing ring body are provided with trapezoidal grooves. The vertical cross-sectional shape of the trapezoidal groove is trapezoidal, and an expansion ring is inserted into the trapezoidal groove. The expansion ring is made of water-swellable waterproof material or oil-swellable water-resistant material, depending on the application scenario, which will not be elaborated here. One end of the connecting ring is inserted into the side groove, and the other end of the connecting ring is integrally connected to a side cylinder. The surface of the connecting ring is provided with a butt bolt hole. The connecting ring is inserted into the side groove for easy rotation. The inner diameter of the sealing ring body is not less than the outer diameter of the flange boss, so the operator does not need to use elasticity to fit it on the outside of the flange boss, which improves the convenience of use.

[0008] Furthermore, the bolt holes are distributed in multiple sets at equal angles along the central axis of the sealing ring body, corresponding to the bolt hole arrangement of the flange. The diameter of the bolt holes is larger than that of the bolt holes on the flange, which further facilitates the passage of the fixing bolts and improves the positioning error tolerance.

[0009] Furthermore, the expansion ring includes a bottom trapezoidal ring and a top rectangular ring, and the bottom trapezoidal ring and the top rectangular ring are an integral structure. The bottom trapezoidal ring is inserted into the trapezoidal groove, and the bottom trapezoidal ring and the trapezoidal groove are self-locking to prevent separation during transportation.

[0010] Furthermore, one end of the connecting ring is integrally formed with a protruding ring on the inner side of the side groove, and the top and bottom surfaces of the side groove are provided with ring grooves for the protruding ring to be inserted. The protruding ring extends into the ring groove, which improves the stability of the connection and does not affect the relative rotation between the sealing ring body and the connecting ring.

[0011] Furthermore, the inner diameter of the side cylinder is adapted to the outer diameter of the flange, and the top opening of the side cylinder is provided with a bevel, which enlarges the inner diameter of the opening, making it easier to fit onto the outside of the flange and to allow the flange to enter the inside of the side cylinder.

[0012] Furthermore, the connecting ring is made of a non-deformable metal material, preferably stainless steel, and the surface of the connecting ring is treated with anti-corrosion to prevent deformation that could lead to deformation of the sealing ring body.

[0013] Furthermore, the top rectangular ring protrudes from the trapezoidal groove to ensure efficient contact between the top rectangular ring and the flange.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides an irregularly shaped external sealing ring, which has the following beneficial effects:

[0016] (1) This utility model is provided with a connecting ring and a side tube. The connecting ring and the side tube are an integral structure. The connecting ring is inserted into the side groove opened on the edge of the sealing ring body. During installation, one end of the side tube is inserted into the outside of the flange, and the inner wall of the side tube slides against the edge of the flange. Then, rotating the side tube will rotate the connecting ring, so that the bolt holes opened on the surface of the connecting ring are aligned with the bolt holes on the surface of the flange, and it can be connected with another flange. During connection, as the fixing bolts are tightened, the two flanges squeeze the sealing ring body, causing the sealing ring body to deform and seal the gap, thus completing the seal. This device realizes the quick positioning and temporary fixed installation of the sealing ring body by the sleeve of the side tube and the flange, which facilitates the bolt fixing between the flanges later and improves the convenience of operation. At the same time, the sealing ring body does not have bolt holes on its surface, which makes it more integral, reduces stress concentration, and improves the stability and durability of use.

[0017] (2) The present invention is provided with an expansion ring, which is located on both sides of the sealing ring body. The expansion ring includes a bottom trapezoidal ring and a top rectangular ring. The bottom trapezoidal ring is inserted into the trapezoidal groove to prevent it from falling off. When the sealing ring body is installed, the expansion ring is squeezed and deformed together to seal the gap. When the liquid leaks, the expansion ring quickly absorbs the liquid and expands, and its volume increases rapidly, thereby improving the gap sealing effect, further improving the anti-leakage performance, and improving the stability of use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an irregularly shaped external sealing ring according to an embodiment of the present utility model;

[0020] Figure 2 This is a top view of an irregularly shaped outer sealing ring according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the sealing ring body according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the expansion ring according to an embodiment of the present invention.

[0023] In the picture:

[0024] 1. Sealing ring body; 2. Trapezoidal groove; 3. Expansion ring; 4. Connecting ring; 5. Side groove; 6. Raised ring; 7. Side cylinder; 8. Bevel; 9. Butt bolt hole; 10. Top rectangular ring; 11. Bottom trapezoidal ring. Detailed Implementation

[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0026] According to an embodiment of the present invention, an irregularly shaped external sealing ring is provided.

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4 As shown, according to an embodiment of this utility model, an irregularly shaped external sealing ring includes a sealing ring body 1 and a connecting ring 4. The sealing ring body 1 is made of nitrile rubber, a common sealing ring material. A side groove 5 is formed on the edge of the sealing ring body 1, arranged in a ring and centered along the height direction of the sealing ring body 1. Trapezoidal grooves 2 are formed on both sides of the sealing ring body 1, with a trapezoidal vertical cross-section. An expansion ring 3 is inserted inside the trapezoidal groove 2. The expansion ring 3 is made of a water-swellable waterproof material or an oil-swellable water-resistant material, depending on the application scenario, which will not be elaborated further here. One end of the connecting ring 4 is inserted into the side groove 5, and the other end of the connecting ring 4 is integrally connected to a side cylinder 7. A butt bolt hole 9 is formed on the surface of the connecting ring 4. Inserting the connecting ring 4 into the side groove 5 facilitates rotation of the connecting ring 4. The inner diameter of the sealing ring body 1 is not less than the outer diameter of the flange boss. This device eliminates the need for elastic fitting around the flange boss, improving ease of use. During installation, one end of the side sleeve 7 is inserted into the outside of the flange, and the inner wall of the side sleeve 7 slides against the edge of the flange. Then, rotating the side sleeve 7 rotates the connecting ring 4, aligning the bolt holes 9 on the surface of the connecting ring 4 with the bolt holes on the surface of the flange, allowing it to be mated with another flange. During mating, as the fixing bolts are tightened, the two flanges compress the sealing ring body 1, deforming it to seal the gaps and completing the seal. This device achieves rapid positioning and temporary fixing of the sealing ring body 1 through the fitting of the side sleeve 7 with the flange, facilitating subsequent bolt fixing between flanges and improving operational convenience. At the same time, the absence of bolt holes on the surface of the sealing ring body 1 results in higher integrity, reduces stress concentration, and improves stability and durability.

[0028] In one embodiment, multiple sets of butt bolt holes 9 are distributed at equal angles along the central axis of the sealing ring body 1, corresponding to the bolt hole arrangement of the flange. The diameter of the butt bolt holes 9 is larger than the bolt hole diameter of the flange, which further facilitates the passage of the fixing bolts and improves the positioning error tolerance.

[0029] In one embodiment, the expansion ring 3 includes a bottom trapezoidal ring 11 and a top rectangular ring 10, which are integrally formed. The bottom trapezoidal ring 11 is inserted into the trapezoidal groove 2, and the bottom trapezoidal ring 11 and the trapezoidal groove 2 are self-locking to prevent separation during transportation. The expansion ring 3 is located on both sides of the sealing ring body 1. The expansion ring 3 includes a bottom trapezoidal ring 11 and a top rectangular ring 10. The bottom trapezoidal ring 11 is inserted into the trapezoidal groove 2 to prevent it from falling off. When the sealing ring body 1 is installed, the expansion ring 3 is also compressed and deformed to seal the gap. When liquid leaks, the expansion ring 3 quickly absorbs liquid and expands, and its volume increases rapidly, thereby improving the gap sealing effect, further improving the anti-leakage performance, and improving the stability of use.

[0030] In one embodiment, a convex ring 6 is integrally formed on one end of the connecting ring 4 inside the side groove 5, and annular grooves for the convex ring 6 to be inserted are formed on both the top and bottom surfaces of the side groove 5. The convex ring 6 extends into the annular groove, which improves the stability of the connection and does not affect the relative rotation between the sealing ring body 1 and the connecting ring 4.

[0031] In one embodiment, the inner diameter of the side cylinder 7 is adapted to the outer diameter of the flange, and the top opening of the side cylinder 7 is provided with a bevel 8, which enlarges the inner diameter of the opening, making it easier to fit onto the outside of the flange and to allow the flange to enter the inside of the side cylinder 7.

[0032] In one embodiment, the connecting ring 4 is made of a non-deformable metal material, preferably stainless steel, and the surface of the connecting ring 4 is treated with anti-corrosion to prevent deformation that could cause deformation of the sealing ring body 1.

[0033] In one embodiment, the top rectangular ring 10 protrudes from the trapezoidal groove 2 to ensure efficient contact between the top rectangular ring 10 and the flange.

[0034] Working Principle: This utility model is equipped with a connecting ring 4 and a side tube 7, which are integral structures. The connecting ring 4 is inserted into the side groove 5 on the edge of the sealing ring body 1. During installation, one end of the side tube 7 is inserted into the outside of the flange, and the inner wall of the side tube 7 slides against the edge of the flange. Then, rotating the side tube 7 rotates the connecting ring 4, thereby aligning the bolt holes 9 on the surface of the connecting ring 4 with the bolt holes on the surface of the flange, allowing it to be mated with another flange. During mating, as the fixing bolts are tightened, the two flanges compress the sealing ring body 1, causing the sealing ring body 1 to deform and seal the gap, thus completing the seal. This device achieves rapid positioning of the sealing ring body 1 through the sleeve connection between the side tube 7 and the flange. The temporary fixed installation facilitates subsequent bolt fixing between flanges, improving operational convenience. Simultaneously, the absence of bolt holes on the surface of the sealing ring body 1 enhances overall integrity, reduces stress concentration, and improves stability and durability. Furthermore, the expansion ring 3, located on both sides of the sealing ring body 1, comprises a bottom trapezoidal ring 11 and a top rectangular ring 10. The bottom trapezoidal ring 11 is inserted into the trapezoidal groove 2 to prevent detachment. During installation of the sealing ring body 1, the expansion ring 3 is compressed and deformed, sealing gaps. When liquid leakage occurs, the expansion ring 3 rapidly absorbs liquid and expands, increasing its volume quickly and thus improving the gap-sealing effect, further enhancing leak-proof performance and operational stability.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A non-circular external sealing ring, comprising a sealing ring body (1) and a connecting ring (4), characterized in that, The sealing ring body (1) has a side groove (5) on its edge, and trapezoidal grooves (2) are opened on both sides of the sealing ring body (1). An expansion ring (3) is inserted into the trapezoidal groove (2). One end of the connecting ring (4) is inserted into the side groove (5), and the other end of the connecting ring (4) is integrally connected to the side cylinder (7). The connecting ring (4) has a butt bolt hole (9) on its surface.

2. The irregularly shaped external sealing ring according to claim 1, characterized in that, The connecting bolt holes (9) are distributed in multiple sets at equal angles along the central axis of the sealing ring body (1), and the diameter of the connecting bolt holes (9) is larger than the diameter of the bolt holes of the flange.

3. The irregularly shaped external sealing ring according to claim 1, characterized in that, The expansion ring (3) includes a bottom trapezoidal ring (11) and a top rectangular ring (10), and the bottom trapezoidal ring (11) and the top rectangular ring (10) are an integral structure, and the bottom trapezoidal ring (11) is inserted into the trapezoidal groove (2).

4. The irregularly shaped external sealing ring according to claim 1, characterized in that, One end of the connecting ring (4) is integrally formed with a protruding ring (6) inside the side groove (5), and the top and bottom surfaces of the side groove (5) are provided with ring grooves for the protruding ring (6) to be inserted.

5. The irregularly shaped external sealing ring according to claim 1, characterized in that, The inner diameter of the side cylinder (7) is adapted to the outer diameter of the flange, and the top opening of the side cylinder (7) is provided with a bevel (8).

6. The irregularly shaped external sealing ring according to claim 1, characterized in that, The connecting ring (4) is made of a metal material that is not easily deformed, and the surface of the connecting ring (4) is treated with anti-corrosion.

7. The irregularly shaped external sealing ring according to claim 3, characterized in that, The top rectangular ring (10) protrudes from the trapezoidal groove (2).

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