Sealing ring with inflation function

Abstract

The utility model relates to the technical field of sealing rings, and discloses a sealing ring with an inflation function, which comprises a rubber ring, an elastic sleeve is fixedly connected to the outer side of the rubber ring, an inflation assembly is arranged on the inner side of the rubber ring, the inflation assembly comprises an annular air bag, the annular air bag is clamped on the inner side of the rubber ring, and a plurality of elastic pieces are arranged on the outer side of the annular air bag. The elastic pieces are distributed around the annular air bag at equal angles, one ends of the elastic pieces abut against the outer wall of the annular air bag, and the other ends of the elastic pieces abut against the inner wall of the elastic sleeve. Air is introduced into the annular air bag, so that the interior of the annular air bag is expanded to enlarge the size, the outer side of the rubber ring is expanded to make up abrasion of the rubber ring, and therefore the rubber ring keeps good sealing performance all the time.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, and more specifically, to a sealing ring with an inflation function. Background Art

[0002] A sealing ring is a high-performance seal with a U-shaped Teflon inner part and a special spring. With appropriate spring force plus the system fluid pressure, the sealing lip is pushed out to gently press against the sealed metal surface to generate an excellent sealing effect.

[0003] After retrieval, the "high-pressure combined sealing ring" disclosed in Chinese Patent Publication No. CN217842675U includes a sealing ring body. A first rubber pad is fixedly installed at the bottom of the sealing ring body. An installation opening is formed inside the sealing ring body. A spring is installed inside the sealing ring body. A lower support plate is arranged at the top of the sealing ring body. A rotating rod is installed on the top of the lower support plate. An upper support plate is connected to the surface of the rotating rod. A second rubber pad is installed on the top of the upper support plate.

[0004] The above patent improves the sealing performance by setting a first rubber pad at the bottom of the sealing ring body and a second rubber pad at the top of the upper support plate. However, since the sealing ring will be worn during use, the first rubber pad and the second rubber pad will also be worn, resulting in a reduction in the overall sealing performance of the sealing ring. Summary of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a sealing ring with an inflation function, which has the advantage of continuously maintaining the sealing performance by inflating to expand the rubber ring outwards to make up for the wear of the rubber ring.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A sealing ring with an inflation function includes a rubber ring. An elastic sleeve is fixedly connected to the outer side of the rubber ring. An inflation assembly is arranged inside the rubber ring. The inflation assembly includes an annular airbag. The annular airbag is clamped inside the rubber ring. A plurality of elastic pieces are arranged on the outer side of the annular airbag. The plurality of elastic pieces are evenly distributed around the annular airbag at equal angles. One end of each of the plurality of elastic pieces abuts against the outer wall of the annular airbag, and the other end of each of the plurality of elastic pieces abuts against the inner wall of the elastic sleeve.

[0007] As a preferred technical solution of the utility model, the vertical cross-section of the elastic sleeve is a U-shaped structure.

[0008] As a preferred technical solution of the present utility model, a wear-resistant member is provided inside the annular airbag. The wear-resistant member includes an elastic wear-resistant ring, a silica gel ring is coated on the outer side of the elastic wear-resistant ring, an adhesive layer is coated on the outer side of the silica gel ring, and the silica gel ring is bonded to the outer wall of the annular airbag through the adhesive layer.

[0009] As a preferred technical solution of the present utility model, an air charging pipe member is provided at one end of the bottom of the annular airbag. The air charging pipe member includes an air charging conduit. The top end of the air charging conduit is fixedly connected to the bottom of the annular airbag and is communicated with the inside of the annular airbag. The bottom end of the air charging conduit penetrates through the rubber ring and extends to the outside of the rubber ring.

[0010] As a preferred technical solution of the present utility model, a mounting seat communicated with the inside of the air charging conduit is fixedly connected to the air charging conduit. A sealing plate slidably connected to the air charging conduit and slidably matched with the air charging conduit is slidably connected to the inner side of the mounting seat. A fixing seat is arranged at the central position inside the air charging conduit. A plurality of connecting rods are fixedly connected to the outer side of the fixing seat. The plurality of connecting rods are evenly distributed around the fixing seat at equal angles. One ends of the plurality of connecting rods far away from the fixing seat are fixedly connected to the inner wall of the air charging conduit. A spring is welded to the top of the fixing seat. The top end of the spring is welded to the bottom of the sealing plate.

[0011] As a preferred technical solution of the present utility model, a through air nozzle slot is opened at the central position of the fixing seat.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. The elastic sleeve can improve the elasticity outside the rubber ring, so that a part between the rubber ring and the elastic sleeve realizes sealing. When the elastic sleeve and the rubber ring are worn, by introducing gas into the annular airbag, the annular airbag expands inside to increase its volume, and the outer side of the rubber ring expands to make up for the wear of the rubber ring, so that the rubber ring always maintains good sealing performance;

[0014] 2. The elastic wear-resistant ring can prevent direct friction between the rubber ring and the device, and the elastic ability of the elastic wear-resistant ring itself can make up for the wear consumption, so that the sealing performance between the inner side of the rubber ring and the device is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural schematic diagram of a sealing ring with an air charging function of the present utility model;

[0016] Figure 2 is a structural schematic diagram of the air charging assembly of the present utility model;

[0017] Figure 3 is a structural schematic diagram of the wear-resistant member of the present utility model;

[0018] Figure 4 This is a schematic structural diagram of the inflatable pipe fitting of the present utility model.

[0019] In the figure: rubber ring 1, inflating assembly 2, annular airbag 21, wear-resistant part 22, elastic wear-resistant ring 221, silica gel ring 222, adhesive layer 223, elastic sheet 23, inflatable pipe fitting 24, inflating conduit 241, mounting seat 242, sealing plate 243, fixed seat 244, connecting rod 245, spring 246, air nozzle slot 247, elastic sleeve 3. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] As Figures 1 to 4 shown, the present utility model provides a sealing ring with an inflating function, including a rubber ring 1. An elastic sleeve 3 is fixedly connected to the outer side of the rubber ring 1. The vertical cross-section of the elastic sleeve 3 is a U-shaped structure. An inflating assembly 2 is arranged inside the rubber ring 1. The inflating assembly 2 includes an annular airbag 21. The annular airbag 21 is clamped inside the rubber ring 1. A plurality of elastic sheets 23 are arranged on the outer side of the annular airbag 21. The plurality of elastic sheets 23 are distributed at equal angles around the annular airbag 21. One end of each of the plurality of elastic sheets 23 abuts against the outer wall of the annular airbag 21, and the other end of each of the plurality of elastic sheets 23 abuts against the inner wall of the elastic sleeve 3.

[0022] The elastic sleeve 3 can enhance the elasticity on the outer side of the rubber ring 1, so that a sealing is achieved between the rubber ring 1 and the elastic sleeve 3. When the elastic sleeve 3 and the rubber ring 1 are worn, by introducing gas into the annular airbag 21, the annular airbag 21 expands inside to increase its volume, and the outer side of the rubber ring 1 expands to make up for the wear of the rubber ring 1, so that the rubber ring 1 always maintains good sealing performance.

[0023] Among them, a wear-resistant part 22 is arranged inside the annular airbag 21. The wear-resistant part 22 includes an elastic wear-resistant ring 221. The outer side of the elastic wear-resistant ring 221 is coated with a silica gel ring 222. An adhesive layer 223 is coated on the outer side of the silica gel ring 222. The silica gel ring 222 is bonded to the outer wall of the annular airbag 21 through the adhesive layer 223. The elastic wear-resistant ring 221 can prevent direct friction between the rubber ring 1 and the device, and the elastic ability of the elastic wear-resistant ring 221 itself can make up for the wear consumption, so that the sealing performance between the inner side of the rubber ring 1 and the device is greatly improved.

[0024] Among them, one end of the bottom of the annular airbag 21 is provided with an air charging pipe member 24. The air charging pipe member 24 includes an air charging conduit 241. The top end of the air charging conduit 241 is fixedly connected to the bottom of the annular airbag 21 and is communicated with the inside of the annular airbag 21. The bottom end of the air charging conduit 241 penetrates through the rubber ring 1 and extends to the outside of the rubber ring 1. An installation seat 242 communicated with the inside of the air charging conduit 241 is fixedly connected to the air charging conduit 241. A sealing plate 243 slidably matched with the air charging conduit 241 is slidably connected to the inner side of the installation seat 242. A fixing seat 244 is arranged at the central position of the inner side of the air charging conduit 241. A plurality of connecting rods 245 are fixedly connected to the outside of the fixing seat 244. The plurality of connecting rods 245 are equally angularly distributed around the fixing seat 244. One ends of the plurality of connecting rods 245 far away from the fixing seat 244 are all fixedly connected to the inner wall of the air charging conduit 241. A spring 246 is welded to the top of the fixing seat 244. The top end of the spring 246 is welded to the bottom of the sealing plate 243. An air nozzle slot 247 communicated through is opened at the central position of the fixing seat 244.

[0025] During inflation, by inserting the inflation nozzle into the air charging conduit 241 and slidingly matching with the air nozzle slot 247, the inflation nozzle abuts against the sealing plate 243, which causes the sealing plate 243 to be lifted and separated from the air charging conduit 241. Thus, the gas led out by the inflation nozzle can be introduced into the annular airbag 21 through the air charging conduit 241, and then the inside of the annular airbag 21 expands to increase the volume, which also expands the outside of the rubber ring 1 to make up for the wear of the rubber ring 1, so that the rubber ring 1 always maintains good sealing performance.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing ring with an inflation function, comprising a rubber ring (1), characterized in that: The outer side of the rubber ring (1) is fixedly connected to an elastic sleeve (3), the inner side of the rubber ring (1) is provided with an inflatable component (2), the inflatable component (2) comprises an annular airbag (21), the annular airbag (21) is clamped on the inner side of the rubber ring (1), the outer side of the annular airbag (21) is provided with a plurality of spring pieces (23), the plurality of spring pieces (23) are distributed at equal angles around the annular airbag (21), one end of the plurality of spring pieces (23) are in contact with the outer wall of the annular airbag (21), and the other end of the plurality of spring pieces (23) are in contact with the inner wall of the elastic sleeve (3).

2. The sealing ring with an inflation function according to claim 1, characterized in that: The vertical cross-section of the elastic sleeve (3) is a U-shaped structure.

3. The sealing ring with an inflation function according to claim 1, characterized in that: A wear-resistant part (22) is arranged on the inner side of the annular airbag (21), and the wear-resistant part (22) comprises an elastic wear-resistant ring (221). The outer side of the elastic wear-resistant ring (221) is coated with a silicone ring (222), and the outer side of the silicone ring (222) is coated with an adhesive layer (223). The silicone ring (222) is bonded to the outer wall of the annular airbag (21) through the adhesive layer (223).

4. The sealing ring with an inflation function according to claim 1, characterized in that: An inflatable tube (24) is provided at one end of the bottom of the annular airbag (21), and the inflatable tube (24) comprises an inflatable conduit (241). The top end of the inflatable conduit (241) is fixedly connected to the bottom of the annular airbag (21) and communicates with the interior of the annular airbag (21). The bottom end of the inflatable conduit (241) passes through the rubber ring (1) and extends to the outside of the rubber ring (1).

5. The sealing ring with an inflation function according to claim 4, characterized in that: The inflation conduit (241) is fixedly connected with a mounting seat (242) which is in communication with the inside of the inflation conduit (241); the inner side of the mounting seat (242) is slidably connected with a sealing plate (243) which is slidably matched with the inflation conduit (241); a fixing seat (244) is provided at the inner center position of the inflation conduit (241); the outer side of the fixing seat (244) is fixedly connected with a plurality of connecting rods (245); the plurality of connecting rods (245) are distributed at equal angles around the fixing seat (244); the ends of the plurality of connecting rods (245) which are away from the fixing seat (244) are fixedly connected with the inner wall of the inflation conduit (241); a spring (246) is welded to the top of the fixing seat (244); the top end of the spring (246) is welded to the bottom of the sealing plate (243).

6. The sealing ring with an inflation function according to claim 5, characterized in that: A through-going air nozzle slot (247) is provided at the center of the fixing seat (244).

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