Double-layer sealed rubber gasket

Abstract

The utility model discloses a double-layer sealed rubber gasket, which relates to the technical field of rubber gaskets, and comprises a lower gasket, the inner side of the lower gasket is sleeved with an upper gasket, the upper gasket extends to the upper part of the lower gasket, and the edge of the lower gasket is uniformly provided with a plurality of positioning holes; the inner side of the upper-layer gasket is provided with an inner-side gasket, the inner-side gasket is provided with two clamping grooves, and the inner sides of the upper-layer gasket and the lower-layer gasket are respectively clamped with the two clamping grooves of the inner-side gasket; a sealing buffer layer is arranged between the upper-layer gasket and the lower-layer gasket; after the lower-layer gasket and the upper-layer gasket are connected in a sleeved mode, a sealing buffer layer is formed between the lower-layer gasket and the upper-layer gasket, when the rubber gasket is squeezed, the sealing buffer layer can play a role in buffering pressure, the rubber gasket has certain elasticity, and therefore the anti-squeezing capacity of the rubber gasket is improved; therefore, the rubber gasket cannot be excessively worn easily, and the sealing performance of the rubber gasket is improved.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of rubber gaskets, in particular to a double-layer sealed rubber gasket. Background Art

[0002] Rubber gaskets are resistant to oil, acid and alkali, cold and heat, and aging. They can be directly cut into sealing gaskets of various shapes and are widely used in the pharmaceutical, electronic, chemical, antistatic, flame retardant, food and other industries.

[0003] Chinese patent application number CN 209991055 U A sealing gasket is provided with at least one cutout, and each of the cutouts is connected to form a circular ring structure through the cutout lines at both ends; each of the cutouts includes a matching protrusion and a groove, and the maximum length of the protrusion along the radial direction of the sealing gasket is greater than the length of the connection between the protrusion and the sealing gasket, so that the protrusion is stuck in the groove;

[0004] The above-mentioned sealing gasket is provided with only one sealing gasket body, and the sealing gasket body is a circular thin sheet. Although this sealing gasket can play a certain degree of sealing role, after long-term use, the sealing gasket body will wear out after long-term use. When the wear reaches a certain degree, it will cause gaps or even breakage, so that the sealing gasket cannot play a normal sealing role;

[0005] To this end, we provide a double-layer sealed rubber gasket, which is provided with a lower gasket, an upper gasket and an inner gasket. The inner gasket can buffer the extrusion of the gasket, preventing the lower gasket and the upper gasket from being damaged due to excessive friction. The sealing buffer layer not only ensures the sealing of the lower gasket and the upper gasket, but also increases the elasticity of the rubber gasket and increases the pressure resistance of the rubber gasket. Utility Model Content

[0006] The purpose of the utility model is to provide a double-layer sealing rubber gasket to solve the problem that the above-mentioned sealing gasket is only provided with a sealing gasket body, and the sealing gasket body is a circular thin sheet. Although this sealing gasket can play a certain degree of sealing role, after long-term use, the sealing gasket body will be worn after long-term use. When it is worn to a certain extent, it will cause gaps or even breakage, thereby making it impossible for the sealing gasket to play a normal sealing role.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A double-layer sealed rubber gasket comprises a lower gasket, the inner side of which is sleeved with an upper gasket, and the upper gasket extends to the top of the lower gasket, and a plurality of positioning holes are evenly arranged on the edge of the lower gasket; an inner gasket is arranged on the inner side of the upper gasket, and the inner gasket is provided with two slots, and the inner sides of the upper gasket and the lower gasket are respectively engaged with the two slots of the inner gasket; a sealing buffer layer is arranged between the upper gasket and the lower gasket.

[0009] As a further technical solution of the utility model, the upper gasket is in a circular ring shape, and the upper gasket and the lower gasket are arranged in concentric circles; the inner diameters of the upper gasket and the lower gasket are the same.

[0010] As a further technical solution of the utility model, a plurality of convex rings are provided on both sides of the inner gasket.

[0011] As a further technical solution of the utility model, the inner gasket is in a circular ring shape, the outer diameter of the inner gasket is larger than the inner diameter of the upper gasket, and the inner diameter of the inner gasket is smaller than the inner diameter of the upper gasket.

[0012] As a further technical solution of the utility model, the sealing buffer layer is the space between the lower gasket and the upper gasket, and is in the shape of a circular ring.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, after the lower gasket and the upper gasket are sleeved, a sealing buffer layer is formed between the lower gasket and the upper gasket. When the rubber gasket is squeezed, the sealing buffer layer can buffer the pressure, so that the rubber gasket has a certain elasticity, thereby increasing the ability of the rubber gasket to resist extrusion, preventing the rubber gasket from being excessively worn, and increasing the sealing performance of the rubber gasket;

[0015] 2. In the utility model, the inner gasket is made of metal and has a high deformation resistance. When the rubber gasket is squeezed, the inner gasket can support the rubber gasket to prevent the rubber gasket from excessive deformation and excessive wear, thereby further ensuring the sealing performance of the rubber gasket;

[0016] 3. In the utility model, the convex rings on both sides of the inner gasket can increase the friction between the rubber gasket and the fastener, thereby increasing the stability of the fastener and the rubber gasket after being attached, and preventing the fastener from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 2 This utility model Figure 1 Another perspective of the picture.

[0019] Figure 3 It is a schematic diagram of the plane structure of the utility model.

[0020] Figure 4 This utility model Figure 3 AA section view.

[0021] Figure 5 It is a schematic diagram of the internal structure of the utility model.

[0022] In the figure: 1-lower gasket, 2-upper gasket, 3-positioning hole, 4-inner gasket, 5-convex ring, 6-sealing buffer layer. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-5 In the embodiment of the utility model, a double-layer sealing rubber gasket includes a lower gasket 1, the inner side of the lower gasket 1 is sleeved with an upper gasket 2, and the upper gasket 2 extends to the top of the lower gasket 1, and a plurality of positioning holes 3 are evenly arranged on the edge of the lower gasket 1; an inner gasket 4 is arranged on the inner side of the upper gasket 2, and the inner gasket 4 is provided with two card grooves, and the inner sides of the upper gasket 2 and the lower gasket 1 are respectively carded with the two card grooves of the inner gasket 4; a sealing buffer layer 6 is arranged between the upper gasket 2 and the lower gasket 1;

[0025] The upper gasket 2 is annular, and is arranged concentrically with the lower gasket 1; the inner diameters of the upper gasket 2 and the lower gasket 1 are the same.

[0026] By adopting the above technical solution, after the lower gasket 1 and the upper gasket 2 are sleeved, a sealing buffer layer 6 is formed between the lower gasket 1 and the upper gasket 2. When the rubber gasket is squeezed, the sealing buffer layer 6 can play a role in buffering the pressure, so that the rubber gasket has a certain elasticity, thereby increasing the ability of the rubber gasket to resist extrusion, preventing the rubber gasket from being excessively worn easily, and increasing the sealing of the rubber gasket.

[0027] In this embodiment, a plurality of protrusions 5 are provided on both sides of the inner gasket 4 .

[0028] By adopting the above technical solution, the raised rings 5 ​​on both sides of the side gasket 4 can increase the friction between the rubber gasket and the fastener, thereby increasing the stability of the fastener after being attached to the rubber gasket and preventing the fastener from loosening.

[0029] In this embodiment, the inner gasket 4 is in a circular ring shape, the outer diameter of the inner gasket 4 is larger than the inner diameter of the upper gasket 2, and the inner diameter of the inner gasket 4 is smaller than the inner diameter of the upper gasket 2;

[0030] The sealing buffer layer 6 is the space between the lower gasket 1 and the upper gasket 2 and is in the shape of a ring.

[0031] By adopting the above technical solution, the inner gasket 4 is made of metal and has a high deformation resistance. When the rubber gasket is squeezed, the inner gasket 4 can support the rubber gasket to prevent the rubber gasket from excessive deformation and excessive wear, thereby further ensuring the sealing of the rubber gasket.

[0032] The working principle of the utility model is: after the lower gasket 1 and the upper gasket 2 are sleeved, a sealing buffer layer 6 is formed between the lower gasket 1 and the upper gasket 2. When the rubber gasket is squeezed, the sealing buffer layer 6 can play a role in buffering pressure, so that the rubber gasket has a certain elasticity, thereby increasing the ability of the rubber gasket to resist extrusion, so that the rubber gasket will not be easily excessively worn, and the sealing of the rubber gasket is increased;

[0033] As a further optimization, the raised rings 5 ​​on both sides of the side gasket 4 can increase the friction between the rubber gasket and the fastener, thereby increasing the stability of the fastener and the rubber gasket after being attached, and preventing the fastener from loosening;

[0034] The inner gasket 4 is made of metal and has a high deformation resistance. When the rubber gasket is squeezed, the inner gasket 4 can support the rubber gasket to prevent the rubber gasket from excessive deformation and excessive wear, thereby further ensuring the sealing of the rubber gasket.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A double-layer sealing rubber gasket, characterized in that: The invention comprises a lower gasket (1), the inner side of which is sleeved with an upper gasket (2), and the upper gasket (2) extends above the lower gasket (1), and a plurality of positioning holes (3) are evenly arranged on the edge of the lower gasket (1); an inner gasket (4) is arranged on the inner side of the upper gasket (2), and the inner gasket (4) is provided with two slots, and the inner sides of the upper gasket (2) and the lower gasket (1) are respectively engaged with the two slots of the inner gasket (4); and a sealing buffer layer (6) is arranged between the upper gasket (2) and the lower gasket (1).

2. A double-layer sealing rubber gasket according to claim 1, characterized in that: The upper gasket (2) is in the shape of a ring, and the upper gasket (2) and the lower gasket (1) are arranged in concentric circles; the inner diameters of the upper gasket (2) and the lower gasket (1) are the same.

3. A double-layer sealing rubber gasket according to claim 2, characterized in that: A plurality of raised rings (5) are provided on both sides of the inner gasket (4).

4. A double-layer sealing rubber gasket according to claim 3, characterized in that: The inner gasket (4) is in the shape of a ring, the outer diameter of the inner gasket (4) is larger than the inner diameter of the upper gasket (2), and the inner diameter of the inner gasket (4) is smaller than the inner diameter of the upper gasket (2).

5. A double-layer sealing rubber gasket according to claim 4, characterized in that: The sealing buffer layer (6) is the space between the lower gasket (1) and the upper gasket (2), and is in the shape of a ring.

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