Oil-resistant sealing silica gel ring

Abstract

The utility model provides an oil-resistant type sealing silica gel ring which comprises a silica gel ring body, sealing washers and a supporting cavity, the upper side and the lower side of the silica gel ring body are fixedly connected with the sealing washers, and the outer side and the inner side of the silica gel ring body are provided with an outer air compression cavity and an inner air compression cavity respectively. Due to the fact that the thermal expansion and cold contraction performance of the silica gel ring is high, after thermal expansion and cold contraction are conducted for a long time, the restorability of the sealing silica gel ring becomes poor, and after the air pressure in the outer air compression cavity and the inner air compression cavity shrinks, air in the supporting cavity can be continuously pushed into the outer air compression cavity and the inner air compression cavity; according to the silica gel ring, the outer air compression cavity and the inner air compression cavity can be filled with air pressure, the expansion wall can push, expand and extrude the periphery of the connecting position between the utensils, the sealing effect of the silica gel ring is guaranteed, the silica gel ring body is not prone to being affected by factors of thermal expansion and cold contraction in the sealing process of the connecting position between the utensils, and stability is better.

Description

Technical Field

[0001] The utility model relates to the technical field of silicone rings, in particular to an oil-resistant sealing silicone ring. Background Art

[0002] Silicone ring is a kind of sealing ring. Silicone is a rubber material. Silicone ring has high air permeability and selectivity for gas permeation, good electrical insulation performance, and excellent chemical properties. Silicone is widely used to make various seals.

[0003] The Chinese utility model patent with publication number CN214789009U in the prior art relates to a new type of sealing silicone ring, including a silicone body, a fixed end, an adjustment end, an oil-blocking layer and a heat-insulating layer, wherein the silicone body is provided with a fixed end, and the silicone body is provided with an adjustment end, the fixed end is fixed with a first fixing column, and the fixed end is fixed with a second fixing column, the second fixing column is provided with a convex pattern, the adjustment end is provided with a first fixing groove, and the adjustment end is provided with a second fixing groove, and the second fixing groove is provided with a concave pattern. The new type of sealing silicone ring is provided with an adjustment end, and the adjustment end can be cut by a cutting tool before use, and then the length of the entire silicone body is adjusted to make it better adapt to the size requirements of the silicone ring, thereby improving the use range of the new type of sealing silicone ring and improving its flexibility of use, and the cutting of the adjustment end can be done by only using an ordinary knife, which reduces the difficulty of cutting and improves the convenience of adjusting the new type of sealing silicone ring.

[0004] However, during the use of this type of sealing silicone ring, due to the high thermal expansion and contraction of the silicone ring, the recoverability of the sealing silicone ring will deteriorate after experiencing thermal expansion and contraction for a long time, and it will become loose when acting as a seal, resulting in poor sealing. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an oil-resistant sealing silicone ring to solve the problem that during the use of the sealing silicone ring in the prior art, due to the high thermal expansion and contraction of the silicone ring, the recoverability of the sealing silicone ring will deteriorate after experiencing thermal expansion and contraction for a long time, and it will become loose accordingly when acting as a seal, resulting in poor sealing.

[0006] The purpose and efficacy of the utility model, an oil-resistant sealing silicone ring, are achieved by the following specific technical means: an oil-resistant sealing silicone ring, comprising a silicone ring body, a sealing gasket and a supporting cavity, the upper and lower sides of the silicone ring body are fixedly connected with sealing gaskets, the supporting cavity is opened between the sealing gaskets, a cavity is opened below the sealing gasket, an oil-blocking layer is fixedly connected to the outer wall of the silicone ring body, and an outer air pressure cavity and an inner air pressure cavity are respectively opened on the outer side and the inner side of the silicone ring body.

[0007] Preferably, the sealing gaskets are provided in two corresponding left and right positions.

[0008] Preferably, an air hole is provided between the cavity and the supporting cavity, and the air hole is arranged in a conical shape near one end of the supporting cavity.

[0009] Preferably, the support cavity, the outer air pressure cavity and the outer sides of the inner air pressure cavity are all fixedly connected with expansion walls.

[0010] Preferably, the expansion wall is provided in the shape of a silicone film.

[0011] Preferably, a notch is provided on the inner wall of the expansion wall.

[0012] Preferably, the notches are multiple and arranged in sequence.

[0013] Preferably, air guide holes are fixedly connected between the support cavity, the outer air pressure cavity and the inner air pressure cavity, and the air guide holes are arranged in a shape of ten.

[0014] Beneficial effects:

[0015] 1. When the main body of the silicone ring experiences thermal expansion and contraction, after the main body of the silicone ring contracts, the air pressure inside the outer air pressure chamber and the inner air pressure chamber will also contract. Since the main body of the silicone ring is installed at the connection between the objects, the upper and lower ends of the main body of the silicone ring are squeezed for a long time, so that the air inside the supporting chamber will continue to be squeezed downward. After the air pressure inside the outer air pressure chamber and the inner air pressure chamber contracts, the air inside the supporting chamber will continue to be pushed into the outer air pressure chamber and the inner air pressure chamber, so that the air pressure inside the outer air pressure chamber and the inner air pressure chamber can be filled, so that the expansion wall will push and open to squeeze around the connection between the objects to ensure its sealing effect, so that the main body of the silicone ring is not easily affected by the factors of thermal expansion and contraction during the sealing process at the connection between the objects, and the stability is better.

[0016] 2. When the silicone ring body is installed at the connection between objects, the expansion walls on the outside and inside of the silicone ring body will be squeezed and fit the connection between the objects to seal, and after the expansion walls are squeezed, the air inside the outer air pressure chamber and the inner air pressure chamber will be pushed into the supporting chamber, and the supporting chamber will push the outer expansion wall to open. During the opening process, the expansion wall will pull open one end of the air hole between the cavity, so that the air pushed into the supporting chamber will be transmitted to the cavity through the air hole, thereby achieving the effect of relatively stable air pressure in the cavity, the supporting chamber, the outer air pressure chamber, and the inner air pressure chamber, so that the silicone ring body as a whole is squeezed at the connection between the objects and the seal is tighter, thereby improving the practicality of the silicone ring body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a front cross-sectional structural schematic diagram of the utility model.

[0019] Figure 3 This is a schematic diagram of the expansion wall structure in the utility model.

[0020] Figure 4 For the utility model Figure 2 A is an enlarged schematic diagram of the structure.

[0021] Figure 1-4 In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0022] Silicone ring body-1, oil-blocking layer-101, sealing gasket-2, cavity-201, air hole-202, supporting cavity-3, air guide hole-301, outer air pressure cavity-4, inner air pressure cavity-401, expansion wall-5, notch-501. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Example

[0024] As attached Figure 1 To Attachment Figure 4 As shown:

[0025] An oil-resistant sealing silicone ring comprises a silicone ring body 1, a sealing gasket 2 and a supporting cavity 3. The sealing gasket 2 is fixedly connected to the upper and lower sides of the silicone ring body 1. When the silicone ring body 1 is installed at the connection between objects for sealing, the sealing gasket 2 will be supported on the outer wall between the two objects, thereby filling the gap at the connection between the objects to achieve a sealing effect. The supporting cavity 3 is opened at the upper and lower sides of the silicone ring body 1. When the sealing gasket 2 is squeezed at the connection between the objects to seal it, and a cavity 201 is opened below the sealing gasket 2, the air inside the cavity 201 will also support the sealing gasket 2, thereby achieving the stability of the sealing gasket 2.

[0026] It should be understood that the above-mentioned fixed connection means that there is no relative movement between the two. There are many ways of fixed connection. Here, an integrated way can be used for fixing so that the sealing gasket 2 will not loosen or have a gap above the silicone ring body 1, so as to ensure the sealing of the sealing gasket 2.

[0027] When the silicone ring body 1 is installed between objects for sealing, the oil-blocking layer 101 is bonded to the outer wall of the silicone ring body 1 by adhesive, so that the oil-blocking layer 101 can block the oil between the objects. If the diameter of the connection between the objects is smaller than the silicone ring body 1, the objects connected together will squeeze the upper and lower ends of the silicone ring body 1, thereby causing the silicone ring body 1 to deform as a whole and expand around the connection between the objects. After the expansion wall 5 on the outside of the support cavity 3 is squeezed, the expansion wall 5 will push the air inside the support cavity 3 into the fixedly connected air guide hole 301, and transmit the air to the outer air pressure cavity 4 and the inner air pressure cavity 4 through the air guide hole 301. In the cavity 401, when air is added to the outer air pressure cavity 4 and the inner air pressure cavity 401, the expansion wall 5 on the side wall of the outer air pressure cavity 4 and the inner air pressure cavity 401 will be pushed outward to open, and the plurality of notches 501 opened on the side wall of the expansion wall 5 will make it easier to open or contract, so that the expansion wall 5 will be squeezed around the connection between the objects after it is opened outward and fill it, thereby improving its sealing effect, and in the process of connecting the objects, when the upper and lower ends of the silicone ring body 1 are squeezed first, the conical air hole 202 opened between the cavity 201 and the supporting cavity 3 will be squeezed and closed, so that the air inside the cavity 201 will not be transmitted to the supporting cavity 3, and the air in the cavity 201 will not be transmitted to the supporting cavity 3. The air will support the sealing gasket 2 to prevent the sealing gasket 2 from collapsing and affecting its sealing effect. If the diameter of the connection between the objects is larger than the silicone ring body 1, the silicone ring body 1 needs to be inserted into the connection between the objects. The expansion walls 5 on the outside and inside of the silicone ring body 1 will squeeze and fit the connection to seal it, and after the expansion walls 5 are squeezed, the air inside the outer air pressure chamber 4 and the inner air pressure chamber 401 will be pushed into the air guide hole 301, and transmitted to the supporting chamber 3 through the air guide hole 301. After the air enters the supporting chamber 3, the expansion wall 5 on the outside will be pushed to open. During the opening process, the expansion wall 5 will pull one end of the air hole 202 between the cavity 201 Open, so that the air pushed into the supporting cavity 3 will be transmitted to the cavity 201 through the air hole 202, so that the objects are connected to each other. When the upper and lower ends of the silicone ring body 1 are squeezed, the air injected into the cavity 201 and the supporting cavity 3 will be squeezed, and then a small amount of air in the cavity 201 and the supporting cavity 3 will be transmitted to the outer air pressure cavity 4 and the inner air pressure cavity 401 through the air guide hole 301, thereby achieving the effect of relatively stable air pressure in the cavity 201, the supporting cavity 3 and the outer air pressure cavity 4, and the inner air pressure cavity 401, so that the silicone ring body 1 as a whole is squeezed more tightly when the connection between the objects is sealed, thereby improving the practicality of the silicone ring body 1.

[0028] When the silicone ring body 1 experiences thermal expansion and contraction, after the silicone ring body 1 shrinks, the air pressure inside the outer air pressure chamber 4 and the inner air pressure chamber 401 will also shrink. Because the silicone ring body 1 is installed at the connection between the objects, the upper and lower ends of the silicone ring body 1 are squeezed for a long time, so that the air inside the supporting chamber 3 will continue to be squeezed and pushed downward. After the air pressure inside the outer air pressure chamber 4 and the inner air pressure chamber 401 shrinks, the air inside the supporting chamber 3 will continue to be pushed into the outer air pressure chamber 4 and the inner air pressure chamber 401, thereby making the air pressure inside the outer air pressure chamber 4 and the inner air pressure chamber 401 able to be filled, so that the expansion wall 5 will push to open and squeeze around the connection between the objects to ensure its sealing effect.

[0029] Working principle: when the silicone ring body 1 is installed between objects, the oil-blocking layer 101 can block the oil between the objects. If the diameter of the connection between the objects is smaller than the silicone ring body 1, the objects connected together will squeeze the upper and lower ends of the silicone ring body 1, and then the silicone ring body 1 will be deformed as a whole and expand around the connection between the objects, so that the expansion wall 5 on the outside of the supporting cavity 3 will be squeezed, and the expansion wall 5 will push the air inside the supporting cavity 3 into the air guide hole 301, and transmit the air to the outer air pressure cavity 4 and the inner air pressure cavity 401 through the air guide hole 301. When air is added to the outer air pressure cavity 4 and the inner air pressure cavity 401, the expansion wall 5 on the side wall of the outer air pressure cavity 4 and the inner air pressure cavity 401 will be pushed outward to open, and then the expansion wall 5 will be squeezed around the connection between the objects and fill it after it opens outward, thereby improving its sealing effect. In the process of connecting the objects, when the upper and lower ends of the silicone ring body 1 are squeezed first, the cone between the cavity 201 and the supporting cavity 3 The air hole 202 will be squeezed and closed, so that the air in the cavity 201 will support the sealing gasket 2. If the diameter of the connection between the objects is larger than the silicone ring body 1, after the silicone ring body 1 is inserted into the connection between the objects, the expansion walls 5 on the outside and inside of the silicone ring body 1 will squeeze and fit the connection to seal it, and after the expansion walls 5 are squeezed, the air inside the outer air pressure chamber 4 and the inner air pressure chamber 401 will be pushed into the air guide hole 301, and transmitted to the support cavity 3 through the air guide hole 301. After the air enters the support cavity 3, the outer expansion wall 5 will be pushed to open. During the opening process, the expansion wall 5 will pull open one end of the air hole 202 between the cavity 201, so that the air pushed into the support cavity 3 will be transmitted to the cavity 201 through the air hole 202, thereby achieving the effect of relatively stable air pressure inside the cavity 201, the support cavity 3 and the outer air pressure cavity 4 and the inner air pressure cavity 401, so that the silicone ring body 1 as a whole is squeezed between the joints between the objects and the seal is tighter, thereby improving the sealing effect.

Claims

1. An oil-resistant sealing silicone ring, comprising a silicone ring body (1), a sealing gasket (2) and a supporting cavity (3), wherein the sealing gasket (2) is fixedly connected to the upper and lower sides of the silicone ring body (1), and the supporting cavity (3) is provided between the sealing gaskets (2), characterized in that: A cavity (201) is provided below the sealing gasket (2), an oil-blocking layer (101) is fixedly connected to the outer wall of the silicone ring body (1), and an outer air pressure cavity (4) and an inner air pressure cavity (401) are provided on the outer side and the inner side of the silicone ring body (1), respectively.

2. The oil-resistant sealing silicone ring according to claim 1, characterized in that: The sealing gaskets (2) are arranged in two corresponding left and right sections.

3. The oil-resistant sealing silicone ring according to claim 1 is characterized in that: An air hole (202) is provided between the cavity (201) and the supporting cavity (3), and the air hole (202) is arranged in a conical shape near one end of the supporting cavity (3).

4. The oil-resistant sealing silicone ring according to claim 1, characterized in that: The outsides of the support cavity (3), the outer air pressure cavity (4) and the inner air pressure cavity (401) are all fixedly connected with expansion walls (5).

5. The oil-resistant sealing silicone ring according to claim 4 is characterized in that: The expansion wall (5) is provided in the shape of a silicone film.

6. The oil-resistant sealing silicone ring according to claim 5, characterized in that: A notch (501) is provided on the inner wall of the expansion wall (5).

7. The oil-resistant sealing silicone ring according to claim 6, characterized in that: The notches (501) are multiple and arranged in sequence.

8. The oil-resistant sealing silicone ring according to claim 1, characterized in that: The support cavity (3), the outer air pressure cavity (4) and the inner air pressure cavity (401) are fixedly connected with air guide holes (301), and the air guide holes (301) are arranged in the shape of ten.

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