Rubber sealing ring with secondary sealing structure

Abstract

The utility model discloses a rubber sealing ring with a secondary sealing structure, which comprises a rubber ring and a circular sleeve, the rubber ring and the circular sleeve are fixedly connected to the outer side of the rubber ring, a plurality of first circular rings are mounted in the circular sleeve, a plurality of second circular rings are mounted in the rubber ring, and the second circular rings are fixedly connected to the rubber ring. The rubber sealing ring with the secondary sealing structure is provided with the circular sleeve, the first circular ring and the annular steel sleeve, and after the upper connecting piece and the lower connecting piece are sealed through the rubber ring, the upper connecting piece and the lower connecting piece can be connected through the circular sleeve, so that the sealing performance is improved. The lower connecting piece and the upper connecting piece can be sealed for the second time through the rubber ring, the stability of the circular sleeve can be improved through the first circular ring, and the sealing performance between the circular sleeve and the lower connecting piece and the sealing performance between the circular sleeve and the upper connecting piece can be guaranteed through the annular steel sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber sealing rings with secondary sealing structures, in particular to a rubber sealing ring with a secondary sealing structure. Background Art

[0002] Rubber sealing ring is a kind of annular rubber product with elasticity. It is widely used in hydraulic, pneumatic and other fields. In vacuum systems, rubber sealing rings are also often used as sealing materials. For ultra-high vacuum with a vacuum degree lower than 10-7Pa, natural and synthetic rubber are ideal sealing ring materials. They have the advantages of good elasticity, small force on flange bolts after assembly into vacuum seal, and can be reused many times.

[0003] The existing rubber sealing ring can only perform one sealing during the sealing process, and one sealing has certain limitations, so we propose a rubber sealing ring with secondary sealing. Utility Model Content

[0004] The purpose of the utility model is to provide a rubber sealing ring with a secondary sealing structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a rubber sealing ring with a secondary sealing structure, comprising a rubber ring and a circular sleeve, a circular sleeve is fixedly connected to the outside of the rubber ring, and a plurality of first circular rings are installed in the circular sleeve, a plurality of second circular rings are installed in the rubber ring, an upper connecting piece is inserted into the top of the rubber ring, and a lower connecting piece is inserted into the bottom of the rubber ring.

[0006] By adopting the above technical solution, a second sealing between the lower connecting member and the upper connecting member is achieved.

[0007] As a further solution of the utility model: an annular steel sleeve is sleeved on the outer side of the circular sleeve near the upper connecting piece.

[0008] By adopting the above technical solution, the sealing between the circular sleeve and the upper connecting piece can be improved by the annular steel sleeve.

[0009] As a further solution of the utility model: an annular steel sleeve is sleeved on the outer side of the circular sleeve near the lower connecting piece.

[0010] By adopting the above technical solution, the sealing between the circular sleeve and the lower connecting piece can be improved by the annular steel sleeve.

[0011] As a further solution of the utility model: a smooth layer is applied inside the circular sleeve, and an anti-oxidation layer is applied outside the circular sleeve.

[0012] By adopting the above technical solution, the anti-oxidation treatment of the circular sleeve is achieved.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the rubber sealing ring with a secondary sealing structure,

[0014] A circular sleeve, a first circular ring and an annular steel sleeve are provided. After the upper connecting member and the lower connecting member are sealed by the rubber ring, the lower connecting member and the upper connecting member can be sealed for a second time by the rubber ring. The stability of the circular sleeve can be improved by the first circular ring, and the sealing between the circular sleeve and the lower connecting member and the upper connecting member can be ensured by the annular steel sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the circular sleeve (2) of the utility model.

[0018] In the figure: 1, rubber ring; 2, circular sleeve; 3, annular steel sleeve; 4, first circular ring; 5, second circular ring; 6, smoothing layer; 7, anti-oxidation layer; 8, lower connecting piece; 9, upper connecting piece. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-3 The utility model provides a technical solution: a rubber sealing ring with a secondary sealing structure, comprising a rubber ring 1 and a circular sleeve 2, a circle of circular sleeve 2 is fixedly connected to the outside of the rubber ring 1, and a plurality of first circular rings 4 are installed in the circular sleeve 2, a plurality of second circular rings 5 ​​are installed in the rubber ring 1, an upper connecting piece 9 is inserted into the top of the rubber ring 1, and a lower connecting piece 8 is inserted into the bottom of the rubber ring 1;

[0021] Specifically, after the upper connecting member 9 and the lower connecting member 8 are sealed by the rubber ring 1, the lower connecting member 8 and the upper connecting member 9 can be sealed for a second time by the rubber ring 1, the stability of the circular sleeve 2 can be improved by the first circular ring 4, the sealing between the circular sleeve 2 and the lower connecting member 8 and the upper connecting member 9 can be ensured by the annular steel sleeve 3, and the shape of the rubber ring 1 can be improved by the second circular ring 5 to prevent it from being deformed during long-term use.

[0022] Furthermore, an annular steel sleeve 3 is sleeved on the outer side of the circular sleeve 2 near the upper connecting piece 9;

[0023] Specifically, after the upper connecting piece 9 is inserted into the circular sleeve 2 , the sealing between the upper connecting piece 9 and the circular sleeve 2 can be ensured by sleeve-arranging the annular steel sleeve 3 on the outside of the circular sleeve 2 .

[0024] Furthermore, an annular steel sleeve 3 is sleeved on the outer side of the circular sleeve 2 near the lower connecting piece 8;

[0025] Specifically, after the lower connecting piece 8 is inserted into the circular sleeve 2, the annular steel sleeve 3 is sleeved on the outside of the circular sleeve 2 to ensure the sealing between the lower connecting piece 8 and the circular sleeve 2, thereby ensuring a second sealing between the lower connecting piece 8 and the upper connecting piece 9 and the rubber ring 1.

[0026] Furthermore, a smoothing layer 6 is applied inside the circular sleeve 2, and an anti-oxidation layer 7 is applied outside the circular sleeve 2;

[0027] Specifically, the smooth layer 6 and the lower connecting member 8 are in contact with the upper connecting member 9, thereby further improving the sealing performance.

[0028] Working principle: When using the rubber sealing ring with a secondary sealing structure, after the upper connecting piece 9 and the lower connecting piece 8 are sealed by the rubber ring 1, the lower connecting piece 8 and the upper connecting piece 9 can be sealed for a second time through the rubber ring 1, the stability of the circular sleeve 2 can be improved by the first ring 4, the sealing between the circular sleeve 2 and the lower connecting piece 8 and the upper connecting piece 9 can be ensured by the annular steel sleeve 3, and the shape of the rubber ring 1 can be improved by the second ring 5 to prevent it from being deformed during long-term use. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0029] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the protection content of the present invention.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rubber sealing ring with a secondary sealing structure, comprising a rubber ring (1) and a circular sleeve (2), characterized in that: A circular sleeve (2) is fixedly connected to the outside of the rubber ring (1), and a plurality of first circular rings (4) are installed in the circular sleeve (2). A plurality of second circular rings (5) are installed in the rubber ring (1). An upper connecting piece (9) is inserted into the top of the rubber ring (1), and a lower connecting piece (8) is inserted into the bottom of the rubber ring (1).

2. The rubber sealing ring with a secondary sealing structure according to claim 1, characterized in that: An annular steel sleeve (3) is sleeved on the outer side of the circular sleeve (2) near the upper connecting piece (9).

3. The rubber sealing ring with a secondary sealing structure according to claim 1, characterized in that: An annular steel sleeve (3) is sleeved on the outer side of the circular sleeve (2) near the lower connecting piece (8).

4. The rubber sealing ring with a secondary sealing structure according to claim 1, characterized in that: The inside of the circular sleeve (2) is coated with a smooth layer (6), and the outside of the circular sleeve (2) is coated with an anti-oxidation layer (7).

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