Sealing ring with good sealing effect

Abstract

The utility model provides a sealing ring with a good sealing effect, which relates to the technical field of sealing rings and comprises a sealing ring body, the sealing ring body comprises a first protective layer, an extrusion layer and a second protective layer, the first protective layer is arranged at the bottom of the extrusion layer, and the second protective layer is arranged at the top of the extrusion layer. A buffer ring is arranged among the first protection layer, the extrusion layer and the second protection layer, the upper side and the lower side of the buffer ring are connected with the extrusion layer and the second protection layer, and the first protection layer and the extrusion layer respectively, through the design of the buffer ring, when the sealing ring body is subjected to vertical extrusion force, the buffer ring is used for buffering, and the sealing effect is improved. When the vertical extrusion force is continuously increased, the buffer ring begins to deform, the cross section of the buffer ring is extruded into an oval shape from a round shape, the overall length of the sealing ring body is reduced, and the sealing ring body is prevented from being damaged after being extruded.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, in particular to a sealing ring with good sealing effect. Background Art

[0002] The sealing ring is a kind of accessory used for sealing, which is widely used in various machines and equipment. Its main function is to provide good sealing performance within the working pressure and a certain temperature range to prevent liquid or gas leakage. As the pressure increases, the sealing ring can automatically improve the sealing performance to ensure the normal operation of the equipment;

[0003] The existing patent CN219866241U sealing ring has an inner ring arranged inside the inner ring of the sealing ring body, and the inner ring is connected to the shaft. By arranging a protrusion and a groove between the inner ring and the sealing ring body, the two will not be relatively displaced under the restriction of the protrusion and the groove. When used for a long time, the sealing ring body and the inner ring are arranged separately, which is convenient for subsequent assembly. At the same time, when replacing, the corresponding damaged parts can be replaced, which is more convenient.

[0004] However, in this patent, the groove of the inner ring needs to be aligned with the raised portion provided in the sealing ring body so that the inner ring and the sealing ring can fit tightly together. Anyway, there will be a gap between the inner ring and the sealing ring body due to the raised portion, which will reduce the sealing effect. Therefore, the utility model proposes a sealing ring with good sealing effect. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings in the prior art and to provide a sealing ring with good sealing effect.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sealing ring with good sealing effect, comprising a sealing ring body, the sealing ring body comprising a first protective layer, an extrusion layer and a second protective layer, the first protective layer is arranged at the bottom of the extrusion layer, the second protective layer is arranged on the top of the extrusion layer, a buffer ring is arranged between the first protective layer, the extrusion layer and the second protective layer, and the upper and lower sides of the buffer ring are respectively connected to the extrusion layer and the second protective layer and the first protective layer and the extrusion layer.

[0007] As a preferred embodiment, a second outer extrusion ring and a second inner extrusion ring are provided on the top and the bottom of the extrusion layer, and the diameter of the second outer extrusion ring is greater than the diameter of the second inner extrusion ring.

[0008] The beneficial effect of adopting the above further scheme is: the buffer ring is limited by the second outer extrusion ring and the second inner extrusion ring to prevent the buffer ring from excessive deformation after severe extrusion, which may cause the buffer ring to tear and be damaged, thereby increasing the service life of the buffer ring.

[0009] As a preferred embodiment, a third outer extrusion ring and a second extrusion ring are sequentially arranged at the bottom of the second protective layer, the diameter of the third outer extrusion ring is equal to the diameter of the second outer extrusion ring, and the diameter of the second extrusion ring is equal to the diameter of the second inner extrusion ring.

[0010] The beneficial effect of adopting the above-mentioned further scheme is that when the sealing ring body is subjected to vertical extrusion force, the extrusion layer is limited by the third outer extrusion ring and the second extrusion ring contacting with the second outer extrusion ring and the second inner extrusion ring on the top of the extrusion layer to prevent the extrusion layer from being torn and damaged after excessive extrusion, and the minimum deformation length of the extrusion layer is the sum of the lengths of the third outer extrusion ring and the second outer extrusion ring.

[0011] As a preferred embodiment, a first outer extrusion ring and a first inner extrusion ring are sequentially arranged on the top of the first protective layer, the diameter of the first outer extrusion ring is equal to the diameter of the third outer extrusion ring, and the diameter of the first inner extrusion ring is equal to the diameter of the second extrusion ring.

[0012] The beneficial effect of adopting the above-mentioned further scheme is that when the sealing ring body is subjected to vertical extrusion force, the first outer extrusion ring and the first inner extrusion ring are in contact with the second outer extrusion ring and the second inner extrusion ring at the bottom of the extrusion layer, so as to limit the extrusion layer and prevent the extrusion layer from being torn and damaged after excessive extrusion, and the minimum deformation length of the extrusion layer is the sum of the lengths of the first outer extrusion ring and the second outer extrusion ring.

[0013] As a preferred embodiment, the buffer ring is an annular structure, the diameter of the buffer ring is larger than the diameter of the second inner extrusion ring, and the diameter of the buffer ring is smaller than the diameter of the second outer extrusion ring.

[0014] The beneficial effect of adopting the above further scheme is: the vertical extrusion force exerted on the sealing ring body is buffered by the buffer ring. When the vertical extrusion force continues to increase, the buffer ring is deformed. At this time, the cross-section of the buffer ring changes from a circle to an ellipse, so that the overall length of the sealing ring body is reduced, thereby effectively avoiding extrusion damage to the sealing ring body.

[0015] As a preferred implementation, a second positioning groove is formed on the top of the second protective layer, a first positioning groove is formed on the bottom of the first protective layer, and the second positioning groove and the first positioning groove are both distributed in a ring shape.

[0016] The beneficial effect of adopting the above further solution is: the second protective layer and the first protective layer are positioned at specified positions through the first positioning groove and the second positioning groove, ensuring that the sealing ring is fully adapted and correctly installed in its designed position to avoid distortion, stretching or misalignment.

[0017] Compared with the prior art, the advantages and positive effects of the utility model are:

[0018] In the utility model, the design of the buffer ring allows the sealing ring body to buffer the vertical extrusion pressure when it is subjected to the buffer ring. When the vertical extrusion pressure continues to increase, the buffer ring begins to deform, and its cross section is extruded from a circle to an ellipse, thereby reducing the overall length of the sealing ring body and avoiding damage to the sealing ring body after extrusion. When the extrusion pressure continues to increase, the third outer extrusion ring, the third outer extrusion ring, the first outer extrusion ring, the first inner extrusion ring, the second outer extrusion ring, and the second inner extrusion ring come into contact with each other to provide auxiliary support for the buffer ring and prevent the buffer ring from being torn and damaged due to excessive force, thereby improving the practicality of the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of a sealing ring with good sealing effect according to the utility model;

[0020] Figure 2 This is a disassembled diagram of a sealing ring with good sealing effect of the utility model;

[0021] Figure 3 This is a cross-sectional view of a sealing ring with good sealing effect according to the utility model;

[0022] Figure 4 This is a bottom structural diagram of the first protective layer in a sealing ring with good sealing effect of the utility model.

[0023] Reference numerals

[0024] 1. Sealing ring body; 2. First protective layer; 21. First outer extrusion ring; 22. First inner extrusion ring; 23. First positioning groove; 3. Extrusion layer; 31. Second outer extrusion ring; 32. Second inner extrusion ring; 4. Second protective layer; 41. Third outer extrusion ring; 42. Second extrusion ring; 43. Second positioning groove; 5. Buffer ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1

[0027] like Figure 1-4As shown, the utility model provides a technical solution: a sealing ring with good sealing effect, including a sealing ring body 1, the sealing ring body 1 includes a first protective layer 2, an extrusion layer 3 and a second protective layer 4, the first protective layer 2 is arranged at the bottom of the extrusion layer 3, the second protective layer 4 is arranged on the top of the extrusion layer 3, a buffer ring 5 is arranged between the first protective layer 2, the extrusion layer 3 and the second protective layer 4, and the upper and lower sides of the buffer ring 5 are respectively connected to the extrusion layer 3 and the second protective layer 4 and the first protective layer 2 and the extrusion layer 3.

[0028] A second outer extrusion ring 31 and a second inner extrusion ring 32 are provided at the top and bottom of the extrusion layer 3. The diameter of the second outer extrusion ring 31 is greater than the diameter of the second inner extrusion ring 32. The second outer extrusion ring 31 and the second inner extrusion ring 32 are used to limit the buffer ring 5 to prevent the buffer ring 5 from excessive deformation after severe extrusion, which may cause the buffer ring 5 to be torn and damaged, thereby improving the service life of the buffer ring 5.

[0029] Example 2

[0030] like Figure 3-4 As shown, a third outer extrusion ring 41 and a second extrusion ring 42 are sequentially arranged at the bottom of the second protective layer 4. The diameter of the third outer extrusion ring 41 is equal to the diameter of the second outer extrusion ring 31, and the diameter of the second extrusion ring 42 is equal to the diameter of the second inner extrusion ring 32. When the sealing ring body 1 is subjected to a vertical extrusion force, the third outer extrusion ring 41 and the second extrusion ring 42 are in contact with the second outer extrusion ring 31 and the second inner extrusion ring 32 at the top of the extrusion layer 3 to limit the extrusion layer 3 to prevent the extrusion layer 3 from being torn and damaged after being excessively extruded. The minimum deformation length of the extrusion layer 3 is the sum of the lengths of the third outer extrusion ring 41 and the second outer extrusion ring 31.

[0031] The top of the first protective layer 2 is sequentially provided with a first outer extrusion ring 21 and a first inner extrusion ring 22. The diameter of the first outer extrusion ring 21 is equal to the diameter of the third outer extrusion ring 41, and the diameter of the first inner extrusion ring 22 is equal to the diameter of the second extrusion ring 42. When the sealing ring body 1 is subjected to a vertical extrusion force, the first outer extrusion ring 21 and the first inner extrusion ring 22 are in contact with the second outer extrusion ring 31 and the second inner extrusion ring 32 at the bottom of the extrusion layer 3 to limit the extrusion layer 3 to prevent the extrusion layer 3 from being torn and damaged after being excessively extruded. The minimum deformation length of the extrusion layer 3 is the sum of the lengths of the first outer extrusion ring 21 and the second outer extrusion ring 31.

[0032] The buffer ring 5 is an annular structure. The diameter of the buffer ring 5 is larger than the diameter of the second inner extrusion ring 32, and the diameter of the buffer ring 5 is smaller than the diameter of the second outer extrusion ring 31. The buffer ring 5 is used to buffer the vertical extrusion force exerted on the sealing ring body 1. When the vertical extrusion force continues to increase, the buffer ring 5 is deformed. At this time, the cross-section of the buffer ring 5 changes from a circle to an ellipse, so that the overall length of the sealing ring body 1 is reduced, thereby effectively preventing the sealing ring body 1 from being squeezed and damaged.

[0033] A second positioning groove 43 is provided at the top of the second protective layer 4, and a first positioning groove 23 is provided at the bottom of the first protective layer 2. The second positioning groove 43 and the first positioning groove 23 are both distributed in a ring shape. The second protective layer 4 and the first protective layer 2 are positioned at designated positions through the first positioning groove 23 and the second positioning groove 43 to ensure that the sealing ring is fully adapted and correctly installed at its designed position to avoid distortion, stretching or misalignment.

[0034] In the utility model, the first protective layer 2, the extrusion layer 3 and the second protective layer 4 are coated with Teflon. Teflon is a copolymer of ethylene and tetrafluoroethylene. The resin is the toughest fluoropolymer and can form a highly durable coating with excellent chemical resistance. The first outer extrusion ring 21, the first inner extrusion ring 22, the second outer extrusion ring 31, the second inner extrusion ring 32, the third outer extrusion ring 41 and the second extrusion ring 42 are coated with vulcanized rubber layers. Vulcanized rubber refers to vulcanized rubber, which has the characteristics of not becoming sticky and not easy to break, and has high elasticity, heat resistance, tensile strength and insolubility in organic solvents. The buffer ring 5 is coated with fluorosilicone rubber, which combines the advantages of fluororubber and silicone rubber, has good high temperature resistance, oil resistance and chemical resistance, and also has high toughness and elasticity.

[0035] Working principle:

[0036] like Figure 1-4 As shown, the sealing ring body 1 is installed in a suitable position through the first positioning groove 23 and the second positioning groove 43, and the sealing ring body 1 is assisted in positioning through the first positioning groove 23 and the second positioning groove 43 to ensure that the sealing ring is fully adapted and correctly installed in its designed position to avoid distortion, stretching or dislocation. The installation is completed. When the sealing ring body 1 is subjected to a vertical extrusion force, it is buffered by the buffer ring 5. When the vertical extrusion force continues to increase, the buffer ring 5 begins to deform, and its cross-section is extruded from a circle to an ellipse, which drives the overall length of the sealing ring body 1 to decrease, thereby avoiding damage to the sealing ring body 1 after extrusion. When the extrusion force further increases, the third outer extrusion ring 41, the third outer extrusion ring 41 and the first outer extrusion ring 21, the first inner extrusion ring 22 are in contact with the second outer extrusion ring 31, the second inner extrusion ring 32 to provide auxiliary support for the buffer ring 5 to prevent the buffer ring 5 from being torn and damaged due to excessive force.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A sealing ring with good sealing effect, characterized in that: The invention comprises a sealing ring body (1), wherein the sealing ring body (1) comprises a first protective layer (2), an extrusion layer (3) and a second protective layer (4); the first protective layer (2) is arranged at the bottom of the extrusion layer (3), the second protective layer (4) is arranged at the top of the extrusion layer (3), a buffer ring (5) is arranged between the first protective layer (2), the extrusion layer (3) and the second protective layer (4), and the upper and lower sides of the buffer ring (5) are respectively connected to the extrusion layer (3) and the second protective layer (4) and the first protective layer (2) and the extrusion layer (3).

2. A sealing ring with good sealing effect according to claim 1, characterized in that: A second outer extrusion ring (31) and a second inner extrusion ring (32) are provided at the top and bottom of the extrusion layer (3), and the diameter of the second outer extrusion ring (31) is greater than the diameter of the second inner extrusion ring (32).

3. A sealing ring with good sealing effect according to claim 1, characterized in that: A third outer extrusion ring (41) and a second extrusion ring (42) are sequentially arranged at the bottom of the second protective layer (4); the diameter of the third outer extrusion ring (41) is equal to the diameter of the second outer extrusion ring (31); and the diameter of the second extrusion ring (42) is equal to the diameter of the second inner extrusion ring (32).

4. A sealing ring with good sealing effect according to claim 1, characterized in that: A first outer extrusion ring (21) and a first inner extrusion ring (22) are sequentially arranged on the top of the first protective layer (2); the diameter of the first outer extrusion ring (21) is equal to the diameter of the third outer extrusion ring (41), and the diameter of the first inner extrusion ring (22) is equal to the diameter of the second extrusion ring (42).

5. A sealing ring with good sealing effect according to claim 1, characterized in that: The buffer ring (5) is an annular structure, the diameter of the buffer ring (5) is greater than the diameter of the second inner extrusion ring (32), and the diameter of the buffer ring (5) is smaller than the diameter of the second outer extrusion ring (31).

6. A sealing ring with good sealing effect according to claim 1, characterized in that: The second protective layer (4) is provided with a second positioning groove (43) at the top, and the first protective layer (2) is provided with a first positioning groove (23) at the bottom. The second positioning groove (43) and the first positioning groove (23) are both distributed in an annular shape.

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