Sealing device

Abstract

The utility model provides a sealing device. The sealing device comprises a sealing body, the first sealing part is arranged on the sealing body, and the first sealing part is elastically arranged; the second sealing part is arranged on the sealing body and is opposite to the first sealing part, the second sealing part is elastically arranged, and a deformation space is formed between the first sealing part and the second sealing part; and the supporting part is arranged in the deformation space, the supporting part is connected with the end, away from the sealing body, of the first sealing part and / or the second sealing part, and the supporting part can be elastically arranged so as to support the first sealing part and the second sealing part after the first sealing part and the second sealing part deform. The sealing gasket solves the problem that in the prior art, when a sealing gasket is used for a long time, a protruding rib used for sealing is prone to deformation, and therefore the sealing effect is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing devices, and more particularly, to a sealing device. Background Art

[0002] Metal gaskets are widely used in the sealing industry, such as at the connection parts between two pipe fittings or at the advancing positions of bolts. The working principle of the metal gasket is as follows: convex ribs are usually provided on its surface. After installation, the convex ribs undergo elastic deformation, which can, on the one hand, generate a certain sealing pressure between the sealing joint surfaces, and on the other hand, can compensate for the gaps generated when the two connecting surfaces move relative to each other, thereby achieving a sealing effect.

[0003] However, in the existing gaskets, with the increase of the service time and the aging of the device, the deformation ability of the convex ribs gradually decreases, and the sealing effect gradually deteriorates. Summary of the Utility Model

[0004] The main object of the present utility model is to provide a sealing device to solve the problem that in the prior art, during long-term use of the sealing gasket, the convex ribs for sealing are prone to deformation, thereby reducing the sealing effect.

[0005] To achieve the above object, according to one aspect of the present utility model, there is provided a sealing device, including: a sealing body; a first sealing portion provided on the sealing body, the first sealing portion being elastically provided; a second sealing portion provided on the sealing body and opposite to the first sealing portion, the second sealing portion being elastically provided, a deformation space being provided between the first sealing portion and the second sealing portion; a support portion provided in the deformation space, the support portion being connected to one end of the first sealing portion and / or the second sealing portion away from the sealing body, the support portion being elastically provided to support the first sealing portion and the second sealing portion after deformation of the first sealing portion and the second sealing portion.

[0006] Further, the support portion includes: a first support body, the first support body including a first connection end and a first free end, the first connection end being connected to one end of the first sealing portion away from the sealing body, the first free end extending towards the middle direction of the deformation space.

[0007] Further, the support portion further includes: a second support body, the second support body including a second connection end and a second free end, the second connection end being connected to one end of the second sealing portion away from the sealing body, the second free end extending towards the middle direction of the deformation space.

[0008] Further, the first free end and / or the second free end extend along a predetermined curved trajectory, and the first free end and the second free end are opposite and spaced apart.

[0009] Furthermore, the sealing device further includes: a limiting body, one end of the limiting body is connected to the sealing body, the other end of the limiting body extends towards the middle direction of the deformation space, and the limiting body is respectively attached to the first sealing part and the second sealing part, so that the first sealing part and the second sealing part are in a sealed state.

[0010] Furthermore, the first sealing part and / or the second sealing part includes: a first sealing body and a second sealing body connected to each other, and there is a predetermined angle between the first sealing body and the second sealing body, and the predetermined angle is an obtuse angle, so that the first sealing part and / or the second sealing part is in an initial state; wherein, the support part is connected to the second sealing body; at least part of the first sealing body is attached to the limiting body, and at least part of the second sealing body is attached to the support part, so that the first sealing part and / or the second sealing part is in a sealed state.

[0011] Furthermore, the sealing body includes: a first layer body, the first sealing part is connected to the first layer body; a second layer body, which is attached to the first layer body, and the limiting body is connected to the second layer body; a third layer body, which is attached to the side of the second layer body away from the first layer body, and the second sealing part is connected to the third layer body.

[0012] Furthermore, the first layer body and the first sealing part are of an integral molding structure; and / or, the second layer body and the limiting body are of an integral molding structure; and / or, the third layer body and the second sealing part are of an integral molding structure.

[0013] Furthermore, the support part includes a first support body and a second support body arranged oppositely, the first support body is connected to the first sealing part, and the second support body is connected to the second sealing part; wherein, the thicknesses of the first support body and the second support body are c1, and the thicknesses of the first sealing part, the second sealing part and the limiting body are c2 respectively, and c2 = (1 - 2) × c1.

[0014] Furthermore, the sealing body is of an annular structure, the first sealing part and the second sealing part extend along the circumferential direction of the sealing body, and the support part extends along the circumferential direction of the first sealing part and / or the second sealing part.

[0015] According to the technical solution of the utility model, the sealing device includes a sealing body, a first sealing part, a second sealing part and a supporting part. The first sealing part and the second sealing part are respectively arranged on the sealing body, and the first sealing part and the second sealing part are arranged opposite to each other. A deformation space is arranged between the first sealing part and the second sealing part. The supporting part is arranged in the deformation space. The supporting part is connected to an end of the first sealing part and / or the second sealing part away from the sealing body. The first sealing part, the second sealing part and the supporting part can be elastically arranged respectively, and the supporting part is used to support the first sealing part and the second sealing part after the first sealing part and the second sealing part are deformed. In the process of using the sealing device, the elastic deformation of the first sealing part and the second sealing part is used to seal the two connecting parts, and the elastic supporting part is used to support the first sealing part and the second sealing part, so as to improve the rebound compensation ability of the first sealing part and the second sealing part, improve the sealing reliability and service life of the sealing device, and avoid the problem that the elasticity of the first sealing part and the second sealing part is easily invalid after long-term use, resulting in reduced sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A structural schematic diagram of an embodiment of a sealing device according to the utility model is shown.

[0018] The above drawings include the following reference numerals:

[0019] 1. Sealing body; 2. First sealing part; 3. Second sealing part; 4. Deformation space; 5. Support part; 51. First supporting body; 510. First connecting end; 511. First free end; 52. Second supporting body; 520. Second connecting end; 521. Second free end; 6. Limiting body; 21. First sealing body; 22. Second sealing body; 11. First layer body; 12. Second layer body; 13. Third layer body. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] Please refer to Figure 1, the present utility model provides a sealing device, comprising: a sealing body 1; a first sealing portion 2 disposed on the sealing body 1, the first sealing portion 2 being elastically disposed; a second sealing portion 3 disposed on the sealing body 1 and opposite to the first sealing portion 2, the second sealing portion 3 being elastically disposed, and a deformation space 4 being provided between the first sealing portion 2 and the second sealing portion 3; a support portion 5 disposed in the deformation space 4, the support portion 5 being connected to one end of the first sealing portion 2 and / or the second sealing portion 3 away from the sealing body 1, the support portion 5 being elastically disposed to support the first sealing portion 2 and the second sealing portion 3 after deformation of the first sealing portion 2 and the second sealing portion 3.

[0022] The sealing device provided by the present utility model includes a sealing body 1, a first sealing portion 2, a second sealing portion 3 and a support portion 5. The first sealing portion 2 and the second sealing portion 3 are respectively disposed on the sealing body 1, and the first sealing portion 2 and the second sealing portion 3 are disposed opposite to each other. A deformation space 4 is provided between the first sealing portion 2 and the second sealing portion 3. The support portion 5 is disposed in the deformation space 4, and the support portion 5 is connected to one end of the first sealing portion 2 and / or the second sealing portion 3 away from the sealing body 1. The first sealing portion 2, the second sealing portion 3 and the support portion 5 are respectively elastically disposed, and the support portion 5 is used to support the first sealing portion 2 and the second sealing portion 3 after deformation of the first sealing portion 2 and the second sealing portion 3. Among them, during the use of the sealing device, the elastic deformation of the first sealing portion 2 and the second sealing portion 3 is used to seal between two connecting members, and the elastic support portion 5 is used to support the first sealing portion 2 and the second sealing portion 3, improving the resilience compensation ability of the first sealing portion 2 and the second sealing portion 3, enhancing the sealing reliability and service life of the sealing device, and avoiding the problem that the elasticity of the first sealing portion 2 and the second sealing portion 3 is prone to failure after long-term use, resulting in a reduction in the sealing effect.

[0023] Specifically, the support portion 5 includes: a first support body 51, the first support body 51 including a first connection end 510 and a first free end 511. The first connection end 510 is connected to one end of the first sealing portion 2 away from the sealing body 1, and the first free end 511 extends toward the middle direction of the deformation space 4. In the sealed state, at least a part of the first support body 51 is in contact with the first sealing portion 2, so that the first support body 51 supports the first sealing portion 2. Preferably, the first support body 51 is welded or bonded to the first sealing portion 2.

[0024] Further, the support portion 5 further includes: a second support body 52, the second support body 52 includes a second connection end 520 and a second free end 521, the second connection end 520 is connected to one end of the second sealing portion 3 away from the sealing body 1, and the second free end 521 extends towards the middle direction of the deformation space 4. In the sealed state, at least a part of the second support body 52 is attached to the second sealing portion 3, so that the second support body 52 supports the second sealing portion 3. Preferably, the second support body 52 is welded or adhered to the second sealing portion 3.

[0025] In the embodiment provided by the present utility model, as Figure 1 shown, the first free end 511 and / or the second free end 521 extend along a predetermined curved trajectory, and the first free end 511 and the second free end 521 are arranged oppositely and spaced apart. Preferably, the first support body 51 and / or the second support body 52 is a wavy structure or a spiral structure.

[0026] In the specific implementation process, the sealing device further includes: a limiting body 6, one end of the limiting body 6 is connected to the sealing body 1, and the other end of the limiting body 6 extends towards the middle direction of the deformation space 4. The limiting body 6 is attached to the first sealing portion 2 and the second sealing portion 3 respectively, so that the first sealing portion 2 and the second sealing portion 3 are in a sealed state. Such a setting can utilize the attachment of the limiting body 6 to the first sealing portion 2 and the second sealing portion 3 to avoid the problem that the support portion 5 applies a large elastic force to the first sealing portion 2 and the second sealing portion 3, resulting in the first sealing portion 2 and the second sealing portion 3 being easily deformed or the support portion 5 generating indentations on the first sealing portion 2 and the second sealing portion 3.

[0027] In order to provide a better sealing effect for the first sealing portion 2 and the second sealing portion 3, the first sealing portion 2 and / or the second sealing portion 3 includes: a first sealing body 21 and a second sealing body 22 connected to each other, and there is a predetermined angle between the first sealing body 21 and the second sealing body 22, and the predetermined angle is an obtuse angle to make the first sealing portion 2 and / or the second sealing portion 3 in an initial state; wherein, the support portion 5 is connected to the second sealing body 22; at least a part of the first sealing body 21 is attached to the limiting body 6, and at least a part of the second sealing body 22 is attached to the support portion 5, so that the first sealing portion 2 and / or the second sealing portion 3 is in a sealed state.

[0028] Preferably, the sealing body 1 includes: a first layer body 11, to which the first sealing portion 2 is connected; a second layer body 12, which is attached to the first layer body 11, and the limiting body 6 is connected to the second layer body 12; a third layer body 13, which is attached to the side of the second layer body 12 away from the first layer body 11, and the second sealing portion 3 is connected to the third layer body 13. The first layer body 11 and the first sealing portion 2 are integrally formed structures; and / or, the second layer body 12 and the limiting body 6 are integrally formed structures; and / or, the third layer body 13 and the second sealing portion 3 are integrally formed structures. Such a setting not only increases the structural strength of the first sealing portion 2 and the second sealing portion 3, but also facilitates processing and improves production efficiency. Among them, the first layer body 11, the second layer body 12 and the third layer body 13 are welded or bonded together.

[0029] Furthermore, the support portion 5 includes a first support body 51 and a second support body 52 arranged oppositely. The first support body 51 is connected to the first sealing portion 2, and the second support body 52 is connected to the second sealing portion 3; wherein, the thickness of the first support body 51 and the second support body 52 is c1, and the thicknesses of the first sealing portion 2, the second sealing portion 3 and the limiting body 6 are c2 respectively, and c2 = (1 - 2) × c1. By limiting the thicknesses of the first support body 51, the second support body 52, the first sealing portion 2, the second sealing portion 3 and the limiting body 6, when the sealing device is in a sealed state, the limiting body 6 has sufficient thickness to limit the first sealing portion 2 and the second sealing portion 3, thereby preventing the first support body 51 from exerting a large pressure on the first sealing portion 2 and causing indentations on the first support body 51, and preventing the second support body 52 from exerting a large pressure on the second sealing portion 3 and causing indentations on the second support body 52.

[0030] In the specific implementation process, the sealing body 1 is of an annular structure, the first sealing portion 2 and the second sealing portion 3 extend along the circumferential direction of the sealing body 1, and the support portion 5 extends along the circumferential direction of the first sealing portion 2 and / or the second sealing portion 3.

[0031] In the actual application process, the first sealing portion 2 and the second sealing portion 3 are ribbed protrusions, also known as "waves" or "protrusions". After assembly, the gasket ribbed protrusions will be flattened by the two mating surfaces, and the ribbed protrusions will undergo plastic deformation and elastic deformation. On the one hand, it can provide sealing pressure, and on the other hand, the elastic deformation of the ribbed protrusions can compensate for the gaps generated when the mating surfaces move axially relative to each other, thereby playing a sealing role. After long-term use, the resilience performance of the ribbed protrusions deteriorates, and insufficient sealing pressure cannot be generated or the mating surface gap cannot be compensated. Therefore, by arranging an elastic buffer layer (support portion) between the first sealing portion 2 and the second sealing portion 3, the resilience compensation ability of the metal gasket is improved, thereby improving the sealing reliability and service life of the metal gasket. Preferably, the number and shape of the elastic buffer layer (support portion) can be in various forms according to the actual use situation, for example, single-layer or multi-layer, wavy or spiral, etc. After assembly, the gasket is compressed, and the limiting layer (limiting body) does not come into contact with the elastic buffer layer (support portion) to avoid mutual interference, thereby affecting the interlayer connection strength. The structure is simple and easy to implement, with a wide application range, and can be used in any scenario where multi-layer metal gaskets are used, without special maintenance and upkeep.

[0032] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0033] According to the sealing device provided by the present invention, it includes a sealing body 1, a first sealing portion 2, a second sealing portion 3, and a support portion 5. The first sealing portion 2 and the second sealing portion 3 are respectively arranged on the sealing body 1, and the first sealing portion 2 and the second sealing portion 3 are arranged opposite to each other. A deformation space 4 is arranged between the first sealing portion 2 and the second sealing portion 3, and the support portion 5 is arranged in the deformation space 4. The support portion 5 is connected to one end of the first sealing portion 2 and / or the second sealing portion 3 away from the sealing body 1. The first sealing portion 2, the second sealing portion 3, and the support portion 5 are respectively elastically arranged, and the support portion 5 is used to support the first sealing portion 2 and the second sealing portion 3 after the deformation of the first sealing portion 2 and the second sealing portion 3. Among them, during the use of the sealing device, the elastic deformation of the first sealing portion 2 and the second sealing portion 3 is used to seal between the two connecting pieces, and the elastic support portion 5 is used to support the first sealing portion 2 and the second sealing portion 3, improving the resilience compensation ability of the first sealing portion 2 and the second sealing portion 3, improving the sealing reliability and service life of the sealing device, and avoiding the problem that the elasticity of the first sealing portion 2 and the second sealing portion 3 is likely to fail after long-term use, resulting in a reduction in the sealing effect.

[0034] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sealing device, characterized in that, Comprising: A sealing body (1); A first sealing portion (2) disposed on the sealing body (1), the first sealing portion (2) being elastically disposed; A second sealing portion (3) disposed on the sealing body (1) and opposite to the first sealing portion (2), the second sealing portion (3) being elastically disposed, and a deformation space (4) being provided between the first sealing portion (2) and the second sealing portion (3); A support portion (5) disposed in the deformation space (4), the support portion (5) being connected to one end of the first sealing portion (2) and / or the second sealing portion (3) away from the sealing body (1), the support portion (5) being elastically disposed to support the first sealing portion (2) and the second sealing portion (3) after deformation of the first sealing portion (2) and the second sealing portion (3).

2. The sealing device according to claim 1, wherein, The support portion (5) comprises: A first support body (51), the first support body (51) comprising a first connection end (510) and a first free end (511), the first connection end (510) being connected to one end of the first sealing portion (2) away from the sealing body (1), and the first free end (511) extending towards the middle direction of the deformation space (4).

3. The sealing device according to claim 2, wherein The support portion (5) further comprises: A second support body (52), the second support body (52) comprising a second connection end (520) and a second free end (521), the second connection end (520) being connected to one end of the second sealing portion (3) away from the sealing body (1), and the second free end (521) extending towards the middle direction of the deformation space (4).

4. The sealing device according to claim 3, characterized in that, The first free end (511) and / or the second free end (521) extend along a predetermined curved trajectory, and the first free end (511) and the second free end (521) are relatively and spaced apart.

5. The sealing device according to claim 1, characterized in that, The sealing device further comprises: A limit body (6), one end of the limit body (6) being connected to the sealing body (1), and the other end of the limit body (6) extending towards the middle direction of the deformation space (4), the limit body (6) being respectively in contact with the first sealing portion (2) and the second sealing portion (3) to make the first sealing portion (2) and the second sealing portion (3) in a sealed state.

6. The sealing device according to claim 5, characterized in that, The first sealing portion (2) and / or the second sealing portion (3) comprises: A first sealing body (21) and a second sealing body (22) connected to each other, a predetermined angle being provided between the first sealing body (21) and the second sealing body (22), the predetermined angle being an obtuse angle to make the first sealing portion (2) and / or the second sealing portion (3) in an initial state; wherein, the support portion (5) is connected to the second sealing body (22); At least a part of the first sealing body (21) is in contact with the limit body (6), and at least a part of the second sealing body (22) is in contact with the support portion (5) to make the first sealing portion (2) and / or the second sealing portion (3) in a sealed state.

7. The sealing device according to claim 6, characterized in that, The sealing body (1) includes: a first layer body (11) to which the first sealing portion (2) is connected; a second layer body (12) attached to the first layer body (11), and the limiting body (6) is connected to the second layer body (12); a third layer body (13) attached to the side of the second layer body (12) away from the first layer body (11), and the second sealing portion (3) is connected to the third layer body (13).

8. The sealing device according to claim 7, characterized in that, The first layer body (11) and the first sealing portion (2) are of an integrally formed structure; and / or, The second layer body (12) and the limiting body (6) are of an integrally formed structure; and / or, The third layer body (13) and the second sealing portion (3) are of an integrally formed structure.

9. The sealing device according to claim 5, characterized in that, The support portion (5) includes a first support body (51) and a second support body (52) arranged oppositely, the first support body (51) is connected to the first sealing portion (2), and the second support body (52) is connected to the second sealing portion (3); wherein, the thicknesses of the first support body (51) and the second support body (52) are c1, and the thicknesses of the first sealing portion (2), the second sealing portion (3) and the limiting body (6) are c2 respectively, and c2 = (1 - 2) × c1.

10. The sealing device according to claim 1, characterized in that, The sealing body (1) is of an annular structure, the first sealing portion (2) and the second sealing portion (3) extend along the circumferential direction of the sealing body (1), and the support portion (5) extends along the circumferential direction of the first sealing portion (2) and / or the second sealing portion (3).

Images