Sealing silica gel ring with double-layer structure

Abstract

The sealing silica gel ring of the double-layer structure comprises a sealing inner ring and a sealing outer ring, a mounting groove is formed in the outer ring side wall of the sealing inner ring, the upper end and the lower end of the sealing outer ring are fixedly connected with limiting blocks respectively, clamping grooves matched with the limiting blocks are formed in the upper inner wall and the lower inner wall of the mounting groove respectively, and the limiting blocks are fixedly connected with the clamping grooves. By means of the unique structural design, the sealing effect of the sealing ring can be effectively improved, meanwhile, when the sealing ring loses recoverability after thermal expansion and cold contraction for a long time, the sealing ring can be prevented from being damaged, and the sealing effect of the sealing ring can be effectively improved. The sealing performance of the sealing ring can be guaranteed not to be lost through the structure, the supporting area of the two ends of the spring can be increased through the arranged first supporting plates and the arranged second supporting plates, it can be guaranteed that the first supporting plates and the second supporting plates form a whole through the arranged first elastic pieces and the arranged second elastic pieces, and certain telescopic performance is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing silicone rings, in particular to a sealing silicone ring with a double-layer structure. Background Technique

[0002] The silicone ring is a kind of sealing ring, which has excellent heat resistance, low-temperature elasticity and particularly excellent oxidation and ozone resistance. Because of its special performance and wide temperature range, and excellent chemical properties, it is widely used in the production of various seals.

[0003] The existing silicone sealing rings achieve the sealing effect through their own deformation, lacking additional sealing measures, so there is room for improvement in the sealing effect. At the same time, when the sealing ring undergoes long-term thermal expansion and contraction, its recoverability will become worse, thereby making the sealing effect worse, and the existing sealing rings lack protective measures against this shortcoming. For this reason, a sealing silicone ring with a double-layer structure is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a sealing silicone ring with a double-layer structure to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A sealing silicone ring with a double-layer structure includes a sealing inner ring and a sealing outer ring. An installation groove is formed on the outer ring side wall of the sealing inner ring, and the sealing outer ring fits with the installation groove. Limiting blocks are respectively fixedly connected to the upper and lower ends of the sealing outer ring, and clamping grooves that fit with the limiting blocks are respectively formed on the upper and lower inner walls of the installation groove. An annular groove is formed on the inner ring side wall of the sealing outer ring, and a plurality of springs are arranged in the annular groove; both ends of the plurality of springs are respectively fixedly connected to a first support plate and a second support plate, and the first support plate is fixedly connected to the inner wall of the annular groove; adjacent two of the first support plates are fixedly connected through a first elastic sheet, and adjacent two of the second support plates are fixedly connected through a second elastic sheet.

[0006] As a further preferred of this technical solution, the installation groove is of an annular structure.

[0007] As a further preferred of this technical solution, the springs are distributed along the radial direction of the sealing outer ring, and the plurality of springs are arranged in an annular array.

[0008] As a further preferred of this technical solution, the plurality of first support plates are arranged in an annular array, and the plurality of second support plates are also arranged in an annular array.

[0009] As a further preferred of this technical solution, both the first elastic sheet and the second elastic sheet are of a V-shaped structure.

[0010] The present utility model provides a sealing silicone ring with a double-layer structure, having the following beneficial effects:

[0011] Through a unique structural design of the present utility model, when the sealing ring is extruded, the first support plate and the second support plate at both ends of the internal spring will exert an expanding force on the outer sealing ring and the inner sealing ring, which can effectively improve the sealing effect of the sealing ring. At the same time, when the sealing ring loses its recoverability after experiencing long-term thermal expansion and contraction, this structure can also ensure that the sealing performance of the sealing ring will not be lost. By providing the first support plate and the second support plate, the support area at both ends of the spring can be increased. By providing the first elastic sheet and the second elastic sheet, it can be ensured that multiple first support plates and multiple second support plates respectively form a whole and have a certain telescopic performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0013] Figure 2 is a schematic diagram of the dissection and splitting of the overall structure of the present utility model;

[0014] Figure 3 For the present utility model Figure 2 is a schematic diagram of the structure of A in the present utility model;

[0015] Figure 4 is a schematic diagram of the structure of the first support plate, the second support plate and the spring in the present utility model;

[0016] In the figure: 1, inner sealing ring; 2, outer sealing ring; 3, installation groove; 4, clamping groove; 5, limiting block; 6, annular groove; 7, first support plate; 8, second support plate; 9, spring; 10, first elastic sheet; 11, second elastic sheet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] 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.

[0018] The present utility model provides a technical solution: As Figures 1 to 4 shown, in this embodiment, a sealing silicone ring with a double-layer structure includes an inner sealing ring 1 and an outer sealing ring 2. An installation groove 3 is provided on the outer circumferential side wall of the inner sealing ring 1. The installation groove 3 is of an annular structure. The outer sealing ring 2 is fitted with the installation groove 3. Limiting blocks 5 are respectively fixedly connected to the upper and lower ends of the outer sealing ring 2. Clamping grooves 4 that are fitted with the limiting blocks 5 are respectively provided on the upper and lower inner walls of the installation groove 3. An annular groove 6 is provided on the inner circumferential side wall of the outer sealing ring 2. A plurality of springs 9 are arranged in the annular groove 6. The springs 9 are distributed along the radial direction of the outer sealing ring 2, and the plurality of springs 9 are arranged in an annular array.

[0019] Among them, both ends of multiple springs 9 are fixedly connected with a first support plate 7 and a second support plate 8 respectively. The multiple first support plates 7 are arranged in a circular array, and the multiple second support plates 8 are also arranged in a circular array. The first support plate 7 is fixedly connected to the inner wall of the annular groove 6.

[0020] By providing the first support plate 7 and the second support plate 8, the support area at both ends of the spring 9 can be increased, avoiding point contact that may prevent the spring 9 from expanding the sealing inner ring 1 and the sealing outer ring 2.

[0021] Among them, adjacent two first support plates 7 are fixedly connected through a first elastic sheet 10, and adjacent two second support plates 8 are fixedly connected through a second elastic sheet 11. Both the first elastic sheet 10 and the second elastic sheet 11 are in a V-shaped structure.

[0022] By providing the first elastic sheet 10 and the second elastic sheet 11, it can be ensured that the multiple first support plates 7 and the multiple second support plates 8 respectively form a whole and have a certain telescopic performance.

[0023] The present utility model provides a sealing silicone ring with a double-layer structure, and the specific working principle is as follows:

[0024] Since both the sealing inner ring 1 and the sealing outer ring 2 have elasticity, the sealing outer ring 2 can be installed into the installation groove 3 on the outer wall of the sealing inner ring 1. The limiting blocks 5 at the upper and lower ends of the sealing outer ring 2 will be embedded into the clamping grooves 4 on the upper and lower inner walls of the installation groove 3, thereby ensuring that the sealing outer ring 2 will not separate from the sealing inner ring 1. The spring 9 provided inside the sealing outer ring 2 will expand the first support plate 7 and the second support plate 8 at both ends outward. The first support plate 7 will generate an outward supporting force on the sealing outer ring 2, and the second support plate 8 will generate an inward supporting force on the sealing inner ring 1, thereby improving the sealing effect of the sealing ring. At the same time, when the sealing ring loses its recoverability after experiencing long-term thermal expansion and contraction, the spring 9, the first support plate 7, and the second support plate 8 can also ensure that the sealing performance of the sealing ring will not be lost.

[0025] By providing the first support plate 7 and the second support plate 8, the support area at both ends of the spring 9 can be increased, avoiding point contact that may prevent the spring 9 from expanding the sealing inner ring 1 and the sealing outer ring 2. By providing the first elastic sheet 10 and the second elastic sheet 11, it can be ensured that the multiple first support plates 7 and the multiple second support plates 8 respectively form a whole and have a certain telescopic performance.

[0026] It should be noted that under normal conditions, the spring 9 is in a relaxed state. At this time, the first support plate 7 and the second support plate 8 at both ends of the spring 9 will not generate a supporting force on the sealing outer ring 2 and the sealing inner ring 1. Only when the sealing ring is used and is squeezed, causing the spring 9 to be compressed, will the reaction force generated by the spring 9 cause the first support plate 7 and the second support plate 8 to expand outward, achieving the purpose of strengthening the sealing effect.

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

Claims

1. A double-layer structured silicone sealing ring, comprising a sealing inner ring (1) and a sealing outer ring (2), characterized in that: An installation groove (3) is formed on the outer ring side wall of the inner sealing ring (1). The outer sealing ring (2) is fitted with the installation groove (3). Limit blocks (5) are fixedly connected to the upper and lower ends of the outer sealing ring (2) respectively. Card slots (4) which are fitted with the limit blocks (5) are formed on the upper and lower inner walls of the installation groove (3) respectively. An annular groove (6) is formed on the inner ring side wall of the outer sealing ring (2). A plurality of springs (9) are arranged in the annular groove (6); Both ends of each of the plurality of springs (9) are fixedly connected with a first support plate (7) and a second support plate (8) respectively. The first support plate (7) is fixedly connected to the inner wall of the annular groove (6); Adjacent two of the first support plates (7) are fixedly connected through a first elastic sheet (10). Adjacent two of the second support plates (8) are fixedly connected through a second elastic sheet (11).

2. A double-layered sealing silicone ring according to claim 1, wherein: The installation groove (3) is of an annular structure.

3. A double-layer structured sealing silicone ring according to claim 1, characterized in that: The springs (9) are distributed along the radial direction of the outer sealing ring (2), and the plurality of springs (9) are arranged in an annular array.

4. A double-layer structured sealing silicone ring according to claim 1, characterized in that: The plurality of first support plates (7) are arranged in an annular array, and the plurality of second support plates (8) are also arranged in an annular array.

5. A double-layer structured sealing silicone ring according to claim 1, characterized in that: Both the first elastic sheet (10) and the second elastic sheet (11) are of a V-shaped structure.

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