Stretch-resistant sealing ring

Abstract

The utility model relates to the field of sealing rings, in particular to a tensile sealing ring which comprises a body, the body comprises an upper attaching layer, a tensile middle layer and a lower attaching layer which are sequentially attached and fixed from top to bottom, and the tensile middle layer is a fabric tensile middle layer; a receding channel is formed in the center of the body, a circular ring protruding part is arranged on the body and surrounds the periphery of the receding channel, an inclined part is arranged on the edge of the body, and the inclined part is arranged in an inclined mode from inside to the direction opposite to the protruding direction of the circular ring protruding part. The upper attaching layer and the lower attaching layer make contact with an external device to be sealed, the fabric tensile middle layer located in the middle provides pull-back force for the upper attaching layer and the lower attaching layer, and by means of the characteristic that the fabric tensile middle layer is high in toughness, the tensile property and restoring force of the whole structure are effectively improved, the replacement frequency of the sealing ring is reduced, and the production effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of sealing rings, in particular to an anti-stretching sealing ring. Background Art

[0002] A sealing ring is an annular elastic element used to fill the gap between two or more connected parts. Its main function is to prevent fluids (including liquids and gases) or solid particles from leaking between adjacent joint surfaces, while also being able to isolate external pollutants to a certain extent. Sealing rings are usually made of rubber, plastic, metal or other synthetic materials, and their designs come in various shapes, such as O-rings, Y-rings, V-rings, X-rings, and various customized shapes to suit different sealing needs and working environments. Rubber sealing rings are often used in automotive, machinery, aerospace, medical equipment, and food processing due to their good elasticity and sealing properties; metal sealing rings, on the other hand, can maintain excellent stability and durability in high temperature, high pressure, or corrosive environments.

[0003] During use, sealing rings are typically compressed to a certain degree to ensure a tight seal between connected components. Over time, the elasticity and resilience of the sealing ring material decrease, leading to a decrease in contact tightness between the ring and the connected component, shortening its service life. For production equipment operating for extended periods, frequent maintenance and replacement are required, reducing production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-stretching sealing ring, aiming to improve the problem that conventional sealing rings have a short lifespan and need to be frequently repaired and replaced for production equipment that works for a long time, thereby reducing production efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An anti-stretch sealing ring comprises a body, wherein the body comprises an upper laminating layer, an anti-stretching middle layer and a lower laminating layer which are fixed in sequence from top to bottom, wherein the anti-stretching middle layer is a fabric anti-stretching middle layer;

[0007] A clearance channel is provided at the center of the body, a circular raised portion is provided on the body, the circular raised portion is arranged around the clearance channel, and an inclined portion is provided on the edge of the body, the inclined portion is inclined in the opposite direction of the raised direction of the inward circular raised portion.

[0008] Furthermore, the protruding top of the annular protrusion is inclined in a direction away from the clearance channel.

[0009] Furthermore, the top end of the protrusion is located on the inner side of the bottom end of the outer ring of the circular protrusion.

[0010] Furthermore, a supporting protrusion is provided at the free end of the inclined portion, and the supporting protrusion protrudes from the bottom toward the protruding direction of the annular protrusion.

[0011] Furthermore, the top end of the abutting protrusion protrudes from the inclined portion.

[0012] Furthermore, a circular arc fitting portion is provided at the free end of the inclined portion, and the free end of the circular arc fitting portion extends outward in the inclined direction of the inclined portion.

[0013] Furthermore, a filter screen is provided in the said yield channel, and the edge of the filter screen is fixedly connected to the tensile middle layer.

[0014] Furthermore, the thickness ratio of the upper bonding layer, the tensile middle layer and the lower bonding layer is 1:1:1-2:1:2.

[0015] Furthermore, the upper bonding layer and the lower bonding layer are both rubber bonding layers.

[0016] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0017] 1. The upper and lower laminating layers are in contact with the external device to be sealed, and the fabric tensile middle layer in the middle provides a pulling force to the upper and lower laminating layers. By utilizing the strong toughness of the fabric tensile middle layer, the tensile resistance and recovery force of the overall structure are effectively improved, the replacement frequency of the sealing ring is reduced, and the production effect is improved.

[0018] 2. The inclined portion lifts the main body. When the upper device to be sealed is installed downward, it contacts and presses against the circular raised portion, compresses the circular raised portion, and pushes the main body downward. The circular raised portion folds itself, thereby increasing the tightness of the fit between the main body and the upper device to be sealed. At the same time, the upper device to be sealed pushes the inclined portion toward the side wall of the lower sealing device, ensuring that the inclined portion and the side wall of the lower sealing device fit more tightly, thereby improving the overall sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front structural schematic diagram of the anti-stretching sealing ring described in Example 1;

[0020] Figure 2 This is a schematic diagram of the reverse structure of the anti-stretching sealing ring described in Example 1;

[0021] Figure 3 Schematic diagram of the cross-sectional structure of the anti-stretching sealing ring described in Example 1;

[0022] Figure 4 This is an enlarged cross-sectional schematic diagram of the anti-stretching sealing ring described in Example 1;

[0023] Figure 5 This is a schematic diagram of the front structure of the anti-stretch seal ring described in Example 2;

[0024] Figure 6 This is a schematic diagram of the reverse structure of the anti-stretch seal ring described in Example 2;

[0025] Figure 7 This is a schematic cross-sectional view of the anti-stretch seal ring described in Example 2;

[0026] Figure 8 This is an enlarged cross-sectional schematic diagram of the anti-stretching sealing ring described in Example 2;

[0027] Figure 9 This is a schematic diagram of the front structure of the anti-stretching sealing ring described in Example 3;

[0028] Figure 10 This is a schematic diagram of the reverse structure of the anti-stretch seal ring described in Example 3;

[0029] Figure 11 This is a schematic diagram of the cross-sectional structure of the new anti-stretching sealing ring in Example 3.

[0030] Description of reference numerals:

[0031] 1. Main body; 11. Upper bonding layer; 12. Tensile-resistant middle layer; 13. Lower bonding layer; 14. Clearance channel; 15. Circular raised portion; 151. Raised top; 152. Outer ring bottom; 16. Inclined portion; 17. Abutting raised portion; 18. Arc bonding portion. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] In addition, it should be noted that the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are all based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] When an element is referred to as being “fixed to,” “disposed on,” or “provided on” another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] Unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in the utility model based on specific circumstances.

[0036] Example 1

[0037] Please refer to Figure 1-4 As shown, this embodiment provides an anti-stretching sealing ring, including a body 1, the body 1 includes an upper bonding layer 11, an anti-stretching middle layer 12 and a lower bonding layer 13 fixed in sequence from top to bottom, and the anti-stretching middle layer 12 is a fabric anti-stretching middle layer 12;

[0038] A clearance channel 14 is provided in the center of the main body 1, and a circular raised portion 15 is provided on the main body 1. The circular raised portion 15 is arranged around the clearance channel 14. An inclined portion 16 is provided on the edge of the main body 1. The inclined portion 16 is inclined inwardly in the opposite direction of the raised direction of the circular raised portion 15.

[0039] The upper bonding layer 11 and the lower bonding layer 13 are in contact with the external device to be sealed, and the fabric tensile-resistant middle layer 12 located in the middle provides a pulling force to the upper bonding layer 11 and the lower bonding layer 13. By utilizing the strong toughness of the fabric tensile-resistant middle layer 12, the tensile resistance and recovery force of the overall structure are effectively improved, the replacement frequency of the sealing ring is reduced, and the production effect is improved.

[0040] The inclined portion 16 lifts the main body 1, and when the upper device to be sealed is installed downward, it contacts and presses against the annular protrusion 15, compresses the annular protrusion 15, and pushes the main body 1 downward. The circular protrusion itself folds, increasing the tightness of the fit between the main body 1 and the upper device to be sealed; at the same time, the upper device to be sealed pushes the inclined portion 16 toward the side wall of the lower sealing device, ensuring that the inclined portion 16 and the side wall of the lower sealing device fit more tightly, thereby improving the overall sealing effect.

[0041] In this embodiment, the raised top 151 of the annular protrusion 15 is inclined in a direction away from the clearance passage 14. This results in the annular protrusion 15 having a larger slope on the side facing the inclined portion 16. Driven by the upper device to be sealed, the annular protrusion 15 on the side facing the clearance passage 14 first contacts the lower device to be sealed. As the upper device to be sealed continues to move downward, the annular protrusion 15 on the side facing the inclined portion 16 continues to move toward the inner sidewall of the lower sealing device, further increasing the contact strength between the inclined portion 16 and the inner sidewall of the lower device to be sealed, thereby improving the sealing effect.

[0042] Furthermore, the raised top 151 is located inside the outer bottom 152 of the annular raised portion 15. This ensures that as the upper device to be sealed continues to descend, the outer bottom 152 of the annular raised portion 15 can continue to move toward the inclined portion 16. When the raised top 151 of the annular raised portion 15 is subjected to downward pressure, it folds in half, causing the inclined portion 16 to retract toward the clearance channel 14, affecting the contact strength between the inclined portion 16 and the inner sidewall of the lower device to be sealed.

[0043] In this embodiment, a filter screen is disposed within the clearance channel 14, the edges of which are fixedly connected to the tensile-resistant middle layer 12. The tensile-resistant middle layer 12 holds the ends of the filter screen in place, while the upper and lower bonding layers 11 and 13 hold the ends of the filter screen in place, securing the filter screen from multiple directions. This ensures the filter screen's robustness and effectively improves its impact resistance.

[0044] Specifically, the thickness ratio of the upper bonding layer 11, the tensile middle layer 12, and the lower bonding layer 13 is 1:1:1-2:1:2. In this embodiment, the thickness ratio of the upper bonding layer 11, the tensile middle layer 12, and the lower bonding layer 13 is 1:1:1. The upper bonding layer 11, the tensile middle layer 12, and the lower bonding layer 13 of the same thickness are provided, so that the tensile resistance of the main body 1 is better guaranteed. In this embodiment, the upper bonding layer 11 and the lower bonding layer 13 are both rubber bonding layers. The provision of the rubber bonding layer effectively improves the tightness of the bonding between the upper bonding layer 11 and the lower bonding layer 13 and the upper and lower devices to be sealed, thereby improving the sealing effect of the main body 1.

[0045] Example 2

[0046] Please refer to Figure 5-8 As shown, this embodiment provides an anti-stretch seal ring. The structure of this embodiment is the same as that of the anti-stretch seal ring of Example 1. The difference is that in this embodiment, the free end of the inclined portion 16 is provided with a butting protrusion 17, which protrudes from the bottom toward the raised direction of the annular protrusion 15. As the upper device to be sealed descends, the inclined portion 16 moves toward the lower device to be sealed, thereby driving the butting protrusion 17 upward, abutting between the bottom end of the side portion of the upper device to be sealed and the inner sidewall of the lower device to be sealed, thereby improving the sealing effect.

[0047] Furthermore, the top end of the abutting protrusion 17 protrudes from the inclined portion 16. Providing a higher abutting protrusion 17 allows the bottom end of the side portion of the upper device to be sealed to provide a greater thrust to the abutting protrusion 17. The abutting protrusion 17 transmits the thrust downward, so that the end of the inclined portion 16 is pushed toward the top surface of the lower device to be sealed and toward the inner side wall of the lower device to be sealed, pushing the end of the body 1 from multiple directions, further ensuring the tightness of the contact between the body 1 and the upper and lower devices to be sealed.

[0048] In this embodiment, the thickness ratio of the upper laminating layer 11, the tensile middle layer 12, and the lower laminating layer 13 is 2:1:2. The thicker upper laminating layer 11 and lower laminating layer 13 improve the tightness of the laminating between the upper and lower sealing devices, thereby improving the sealing effect of the body 1.

[0049] Example 3

[0050] Please refer to Figure 9-11 As shown, this embodiment provides an anti-stretching sealing ring. In this embodiment, the structure of the anti-stretching sealing ring is the same as the anti-stretching sealing ring structure of Example 1. The difference is that, in this embodiment, the free end of the inclined portion 16 is provided with an arc fitting portion 18, and the free end of the arc fitting portion 18 extends outward in the inclined direction of the inclined portion 16. In this embodiment, the bottom opening of the annular protrusion 15 faces upward, and the upper device to be sealed is in contact with the main body 1 when it descends, and provides a driving force for the inclined portion 16 toward the inner side of the lower device to be sealed. At the same time, since the arc protrusion is located at the bottom, the inclined portion 16 moves toward the bottom end of the side of the upper device to be sealed, thereby improving the fitting tightness between the end of the inclined portion 16 and the inner side wall of the lower device to be sealed and the bottom end of the side of the upper device to be sealed. At the same time, the bottom end of the side of the upper device to be sealed applies a force to the arc fitting portion 18 toward the upper device to be sealed, causing the arc fitting portion 18 to tilt upward, further improving the tightness of the fitting between the arc fitting portion 18 and the side of the upper device to be sealed, thereby improving the sealing effect of the main body 1.

[0051] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A tensile seal ring, characterized in that: The main body includes an upper laminating layer, a tensile middle layer and a lower laminating layer which are fixed in sequence from top to bottom, and the tensile middle layer is a fabric tensile middle layer; A clearance channel is provided at the center of the body, a circular raised portion is provided on the body, the circular raised portion is arranged around the clearance channel, and an inclined portion is provided on the edge of the body, the inclined portion is inclined in the opposite direction of the raised direction of the inward circular raised portion.

2. The anti-stretch seal ring according to claim 1, characterized in that: The protruding top of the annular protrusion is inclined in a direction away from the clearance channel.

3. The anti-stretch seal ring according to claim 2, characterized in that: The top end of the protrusion is located on the inner side of the bottom end of the outer ring of the circular protrusion.

4. The anti-stretch seal ring according to claim 1, characterized in that: The free end of the inclined portion is provided with a supporting protrusion, and the supporting protrusion protrudes from the bottom toward the protruding direction of the annular protrusion.

5. The anti-stretch seal ring according to claim 4, characterized in that: The top end of the abutting protrusion protrudes from the inclined portion.

6. The anti-stretch seal ring according to claim 1, characterized in that: The free end of the inclined portion is provided with an arc fitting portion, and the free end of the arc fitting portion extends outwardly toward the inclined direction of the inclined portion.

7. The anti-stretch seal ring according to claim 1, characterized in that: A filter screen is provided in the give way channel, and an edge of the filter screen is fixedly connected to the tensile middle layer.

8. The anti-stretch seal ring according to claim 1, characterized in that: The thickness ratio of the upper laminating layer, the tensile middle layer and the lower laminating layer is 1:1:1-2:1:

2.

9. The anti-stretch seal ring according to claim 1, characterized in that: The upper laminating layer and the lower laminating layer are both rubber laminating layers.

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