A high temperature resistant rubber sealing ring

Abstract

The utility model relates to the technical field of sealing rings, and discloses a high-temperature resistant rubber sealing ring, comprising a supporting ring and a sealing ring, wherein a card slot is arranged on the outer wall of the supporting ring, the number of the card slots is two, the number of the sealing rings is equal to the number of the card slots, the two sealing rings are respectively sleeved in the two card slots, an air slot is arranged inside the sealing ring, and the air slot is filled with heated gas; the supporting ring in the utility model supports the sealing ring, the outer wall of the sealing ring contacts the inner wall of a mechanism to be sealed for sealing, under a high-temperature environment, the elasticity of the sealing ring is reduced, the heated gas in the air slot is heated, and then the sealing ring expands outward from the inside of the air slot, and then the outer ring of the sealing ring keeps in contact with the inner wall of the mechanism to be sealed, thereby maintaining the sealing effect, and improving the practicability and heat resistance.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, in particular to a high-temperature resistant rubber sealing ring. Background Art

[0002] A sealing ring is an accessory used for sealing. It mainly includes V-shaped sealing rings, U-shaped rings, O-shaped sealing rings, rectangular sealing rings, Y-shaped sealing rings, YX-shaped sealing rings for holes, YX-shaped retaining rings for holes, YX-shaped retaining rings for shafts, and YX-shaped sealing rings for shafts. Some sealing rings are combined to improve their performance.

[0003] Prior art, such as the patent with publication number CN219606013U, discloses a high-pressure combined sealing ring, the key points of its technical solution include a support ring, multiple grooves are opened on the inner wall and the outer wall of the support ring, O-rings are clamped in the grooves, the effect is that the O-ring and the sealing surface are attached to achieve sealing, the support ring and the O-ring are both elastic, thereby improving the overall elasticity of the sealing ring, and multiple O-rings can effectively improve the sealing and pressure resistance.

[0004] The existing technology still has shortcomings:

[0005] The above-mentioned prior art uses O-rings as sealing rings, which are similar to traditional high-temperature resistant sealing rings. When used under high-temperature conditions, they are easily affected by high temperatures, resulting in reduced elastic recovery ability of the sealing ring, making it difficult for the sealing ring to fit tightly with the pipe wall, leading to leakage in the pipeline and affecting the overall sealing of the pipeline. For this reason, a high-temperature resistant rubber sealing ring is proposed. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a high temperature resistant rubber sealing ring, which can still play a stable sealing role in a high temperature environment.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature resistant rubber sealing ring, comprising a supporting ring and a sealing ring, a card slot is provided on the outer wall of the supporting ring, the number of the card slots is two, the number of the sealing rings is equal to the number of the card slots, the two sealing rings are respectively inserted into the two card slots, an air groove is provided inside the sealing ring, and the air groove is filled with a heated gas.

[0008] Preferably, the gas volume of the temperature-raising gas is equal to the volume inside the gas tank.

[0009] Preferably, an arc groove is formed on the inner ring of the sealing ring, an arc-shaped convex ring is fixedly connected to the inner wall of the groove, and the arc groove fits with the outer wall of the arc-shaped convex ring.

[0010] Preferably, the cross-section of the air groove is an elliptical structure, and the two narrow ends of the air groove are vertically distributed.

[0011] Preferably, limiting grooves are provided on both sides of the inner wall of the slot, and limiting convex rings are fixedly connected to both sides of the outer wall of the sealing ring. The limiting convex rings are clamped in the limiting grooves, and the cross-section of the limiting grooves is a right-angled trapezoidal structure.

[0012] Preferably, fitting grooves are provided on the inner walls on both sides of the opening of the card slot, and the outer wall of the sealing ring fits with the inner wall of the fitting groove.

[0013] Preferably, the outer wall of the sealing ring is provided with a first annular lip and two second annular lips fixedly connected thereto, the first annular lip is located between the two second annular lips, and the outward protrusion distance of the second annular lips is smaller than the outward protrusion distance of the first annular lips.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The support ring in the utility model supports the sealing ring, and the outer wall of the sealing ring contacts the inner wall of the mechanism to be sealed for sealing. In a high temperature environment, the elasticity of the sealing ring decreases, and the heated gas in the gas groove is heated, thereby causing the sealing ring to expand outward from the inside of the gas groove, thereby allowing the outer ring of the sealing ring to maintain contact with the inner wall of the mechanism to be sealed, thereby maintaining the sealing effect and improving practicality and heat resistance.

[0016] 2. The utility model provides a limiting groove and a fitting groove in the card slot, and the limiting convex ring on the outer wall of the sealing ring is clamped in the limiting groove, and the sealing ring fits with the fitting groove, which not only ensures the limiting strength of the sealing ring installation and prevents the sealing ring from being squeezed out of the card slot, but also ensures the sealing between the sealing ring and the card slot.

[0017] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection cross-sectional structure of the support ring and the sealing ring of the utility model;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the support ring of the utility model;

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the sealing ring of the utility model.

[0022] In the figure: 1. support ring; 2. sealing ring; 3. clamping groove; 4. air groove; 5. heating gas; 6. limiting groove; 7. limiting convex ring; 8. arc convex ring; 9. arc groove; 10. first annular convex lip; 11. second annular convex lip; 12. fitting groove. 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 technical field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 The high temperature resistant rubber sealing ring of this embodiment includes a supporting ring 1 and a sealing ring 2. The outer wall of the supporting ring 1 is provided with a card groove 3. The number of the card grooves 3 is two. The number of the sealing rings 2 is equal to the number of the card grooves 3. The two sealing rings 2 are respectively sleeved in the two card grooves 3. The sealing ring 2 is provided with an air groove 4 inside, and the air groove 4 is filled with a heated gas 5.

[0025] like Figure 1-4 As shown, the rubber sealing ring structure in the utility model is similar to the existing rubber sealing ring structure, such as the existing patent CN219606013U. The main improvement of the utility model is that the sealing ring 2 can still play a stable sealing role in a high temperature environment; the sealing ring 2 in the utility model is a rubber sealing ring, and the support ring 1 is made of aluminum alloy. The aluminum alloy has good heat resistance and pressure resistance. During installation, the two sealing rings 2 are respectively sleeved into the two card grooves 3 from both sides of the support ring 1. The card groove 3 restricts the sealing ring 2. When in use, the outer ring wall of the sealing ring 2 is in contact with the inner wall of the mechanism to be sealed for sealing. When the temperature is too high, the elasticity of the sealing ring 2 is reduced, and the heated gas 5 in the gas groove 4 expands due to heat, thereby causing the sealing ring 2 to expand from the gas groove 4 to the outside, so that the outer ring of the sealing ring 2 continues to contact the inner wall of the mechanism to be sealed and maintains sealing, thereby avoiding leakage. In a high temperature environment, the sealing ring 2 of the utility model can still maintain a sealing effect on the mechanism to be sealed, thereby improving practicality and heat resistance.

[0026] like Figure 4 As shown, the amount of the heated gas 5 is equal to the capacity inside the gas groove 4; the heated gas 5 filled in the gas groove 4 fills the gas groove 4 when the temperature is not high, and then supports the gas groove 4, thereby preventing the sealing ring 2 from shrinking and deforming due to the gas groove 4 and affecting the sealing effect of the sealing ring 2 on the sealing mechanism.

[0027] like Figure 2-4As shown, the inner ring of the sealing ring 2 is provided with an arc groove 9, and the inner wall of the slot 3 is fixedly connected with an arc convex ring 8, and the arc groove 9 is fitted with the outer wall of the arc convex ring 8; the arc groove 9 provided on the inner ring of the sealing ring 2 can facilitate the pulling and deformation of the sealing ring 2 when it is sleeved in the slot 3. After the sealing ring 2 is sleeved in the slot 3, the inner ring arc groove 9 is fitted with the arc convex ring 8 in the slot 3, so that the support ring 1 can stably support the sealing ring 2.

[0028] like Figure 4 As shown, the cross-section of the air groove 4 is an elliptical structure, and the two narrow ends of the air groove 4 are vertically distributed; the elliptical structure of the air groove 4 is easy to expand so that the outer ring of the sealing ring 2 contacts the sealing mechanism for sealing, which is suitable for sealing under high temperature.

[0029] like Figure 2-4 As shown, limiting grooves 6 are provided on both sides of the inner wall of the slot 3, and limiting convex rings 7 are fixedly connected on both sides of the outer wall of the sealing ring 2. The limiting convex rings 7 are clamped in the limiting grooves 6, and the cross-section of the limiting grooves 6 is a right-angled trapezoidal structure; the limiting convex rings 7 and the sealing ring 2 are integrally formed to ensure strength and connectivity. When the sealing ring 2 is installed, the limiting convex ring 7 on its outer wall is clamped into the limiting groove 6 on the inner wall of the slot 3, thereby limiting the sealing ring 2, improving the installation strength of the sealing ring 2, avoiding the sealing ring 2 from being squeezed and detached from the support ring 1, and improving practicality.

[0030] like Figure 2-4 As shown, fitting grooves 12 are provided on the inner walls on both sides of the opening of the card slot 3, and the outer wall of the sealing ring 2 fits with the inner wall of the fitting groove 12; when the sealing ring 2 is installed in the card slot 3, its vertical side wall fits with the fitting groove 12, thereby shielding the card slot 3, improving the sealing between the sealing ring 2 and the card slot 3, and preventing impurities from entering.

[0031] like Figure 4 As shown, the outer wall of the sealing ring 2 is provided with a first annular convex lip 10 and two second annular convex lips 11 fixedly connected, the first annular convex lip 10 is located between the two second annular convex lips 11, and the outward protrusion distance of the second annular convex lip 11 is smaller than the outward protrusion distance of the first annular convex lip 10; the first annular convex lip 10, the two second annular convex lips 11 and the sealing ring 2 are integrally formed and manufactured, which is convenient for production and ensures strength. The outer ring of the first annular convex lip 10 performs the main seal on the sealing mechanism to be sealed, and the outer rings of the two second annular convex lips 11 perform the auxiliary seal on the sealing mechanism to be sealed. The contact surface with the mechanism to be sealed is small, which reduces wear and increases the service life.

[0032] Implementation steps in this embodiment: during installation, the two sealing rings 2 are respectively put into the two clamping grooves 3 from both sides of the support ring 1, the limiting convex ring 7 on the outer wall of the sealing ring 2 is clamped into the limiting groove 6 on the inner wall of the clamping groove 3, the arc groove 9 on the inner ring of the sealing ring 2 is fitted with the arc convex ring 8 in the clamping groove 3, the vertical side wall of the sealing ring 2 is fitted with the fitting groove 12, and the clamping groove 3 restricts the sealing ring 2. When in use, the first annular convex lip 10 and the two second annular convex lips 11 on the outer wall of the sealing ring 2 are in contact with the inner wall of the mechanism to be sealed for sealing. When the temperature is too high, the elasticity of the sealing ring 2 is reduced, and the heated gas 5 in the gas groove 4 expands due to the heat, thereby causing the sealing ring 2 to expand from the gas groove 4 to the outside, so that the first annular convex lip 10 and the two second annular convex lips 11 on the outer wall of the sealing ring 2 continue to contact the inner wall of the mechanism to be sealed and maintain sealing, thereby avoiding leakage. In a high temperature environment, the sealing ring 2 of the utility model can still maintain a sealing effect on the mechanism to be sealed.

[0033] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A high temperature resistant rubber sealing ring, characterized in that: The invention comprises a support ring (1) and a sealing ring (2); a card slot (3) is provided on the outer wall of the support ring (1); the number of the card slots (3) is two, the number of the sealing rings (2) is equal to the number of the card slots (3); the two sealing rings (2) are respectively sleeved in the two card slots (3); an air slot (4) is provided inside the sealing ring (2); and the air slot (4) is filled with a temperature-increasing gas (5).

2. A high temperature resistant rubber sealing ring according to claim 1, characterized in that: The gas volume of the heated gas (5) is equal to the internal capacity of the gas tank (4).

3. A high temperature resistant rubber sealing ring according to claim 1, characterized in that: The inner ring of the sealing ring (2) is provided with an arc groove (9), the inner wall of the clamping groove (3) is fixedly connected with an arc convex ring (8), and the arc groove (9) is in contact with the outer wall of the arc convex ring (8).

4. A high temperature resistant rubber sealing ring according to claim 1, characterized in that: The cross section of the air groove (4) is an elliptical structure, and the two narrow ends of the air groove (4) are vertically distributed.

5. A high temperature resistant rubber sealing ring according to claim 1, characterized in that: Limiting grooves (6) are provided on both sides of the inner wall of the clamping groove (3), and limiting convex rings (7) are fixedly connected to both sides of the outer wall of the sealing ring (2). The limiting convex rings (7) are clamped in the limiting grooves (6), and the cross-section of the limiting grooves (6) is a right-angled trapezoidal structure.

6. A high temperature resistant rubber sealing ring according to claim 1, characterized in that: The inner walls on both sides of the opening of the card slot (3) are provided with fitting grooves (12), and the outer wall of the sealing ring (2) fits with the inner wall of the fitting groove (12).

7. A high temperature resistant rubber sealing ring according to claim 1, characterized in that: The outer wall of the sealing ring (2) is provided with a first annular convex lip (10) and two second annular convex lips (11) fixedly connected, the first annular convex lip (10) is located between the two second annular convex lips (11), and the outward protrusion distance of the second annular convex lips (11) is smaller than the outward protrusion distance of the first annular convex lip (10).

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