High-temperature-resistant flame-retardant rubber sealing ring

Abstract

The utility model belongs to the technical field of sealing rings and discloses a high-temperature-resistant flame-retardant rubber sealing ring which comprises an annular flame-retardant rubber ring, an annular groove is formed in the top of the annular flame-retardant rubber ring, and an annular elastic piece abutting against the inner wall of the annular groove is arranged in the annular flame-retardant rubber ring. The cross section of the annular groove and the cross section of the annular elastic piece are both in a U shape. According to the high-temperature-resistant flame-retardant rubber sealing ring, the annular elastic piece is made of metal with good elastic performance, such as memory metal, and the annular elastic piece has acting force for abutting against the two sides of the annular flame-retardant rubber rings on the two sides of the annular groove, so that the high-temperature-resistant flame-retardant rubber sealing ring and the sealed hole and shaft continuously abut against each other, and the sealing performance is guaranteed.

Description

Technical Field

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

[0002] Sealing rings are widely used in various mechanical devices to achieve sealing. Specifically, they are often placed around shafts to prevent lubricants and other liquids from leaking out along the shafts, thereby achieving a complete seal. Flame-retardant sealing rings are typically made from flame-retardant materials such as rubber, silicone, and fluororubber. These materials can self-extinguish or slow combustion when burned, thus providing a flame retardant effect.

[0003] The Chinese utility model patent with publication number CN218780763U discloses an external dynamic medium and high pressure sealing ring for a one-way hole, including a main sealing ring with an annular cross section. On one vertical side wall of the main sealing ring, starting from the center of the main sealing ring, a first secondary sealing ring and a second secondary sealing ring, both of which are annular in cross section, are fixedly connected in sequence from the inside to the outside. The width of the second secondary sealing ring is greater than the thickness of the first secondary sealing ring. The side walls of the main sealing ring close to the first secondary sealing ring and the second secondary sealing ring form a connecting groove with an annular cross section between the first secondary sealing ring and the second secondary sealing ring. The overall cross section of the main sealing ring, the first secondary sealing ring and the second secondary sealing ring is a long-short-lip U-shaped arrangement, with a short outer lip and a long inner lip in the cross section.

[0004] Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: there is a connecting groove between the first secondary sealing ring and the second secondary sealing ring on the main sealing ring. When the above-mentioned sealing ring is used for sealing, the sides of the first secondary sealing ring and the second secondary sealing ring that are away from each other are pressed against the sealed component. Due to the lack of supporting components between the first secondary sealing ring and the second secondary sealing ring, after long-term use, the first secondary sealing ring and the second secondary sealing ring are easy to gather towards the middle, and the sealing effect provided by the first secondary sealing ring and the second secondary sealing ring becomes weaker and weaker. Therefore, it is necessary to improve the design of the related technologies. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a high-temperature resistant and flame-retardant rubber sealing ring.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions: a high-temperature resistant flame-retardant rubber sealing ring, comprising an annular flame-retardant rubber ring, an annular groove is provided on the top of the annular flame-retardant rubber ring, an annular elastic part is provided inside the annular flame-retardant rubber ring and is pressed against the inner wall of the annular groove, and the cross-sections of the annular groove and the annular elastic part are both U-shaped.

[0007] By adopting the above technical solution, the annular elastic part is made of a metal with good elastic properties, such as memory metal. The annular elastic part has a pressing force on both sides of the annular flame-retardant rubber ring on both sides of the annular groove, so that the high-temperature resistant flame-retardant rubber sealing ring and the sealed hole and shaft are continuously pressed tightly, ensuring the sealing performance.

[0008] Furthermore, an upper annular mounting groove communicating with the annular groove is provided on the top of the annular flame-retardant rubber ring, the width of the upper annular mounting groove is smaller than the width of the annular groove, and the top of the annular elastic member abuts against the inner top wall of the annular groove.

[0009] By adopting the above technical solution, the setting of the upper annular mounting groove and the limitation of the position of the annular elastic member reduce the probability of the annular elastic member detaching from the annular flame retardant rubber ring from the upper annular mounting groove during use, thereby enhancing the stability of the annular elastic member.

[0010] Furthermore, an O-ring is provided in the annular elastic member near the top thereof, and two sides of the O-ring are pressed tightly against the inner surfaces of two sides of the annular elastic member.

[0011] By adopting the above technical solution, the provision of the O-ring provides good support for the annular elastic member. The annular elastic member cooperates with the O-ring to further enhance the sealing effect of the high-temperature resistant and flame-retardant rubber sealing ring.

[0012] Furthermore, an arc-shaped groove cooperating with the O-ring is provided in the annular elastic member.

[0013] By adopting the above technical solution, the probability of the O-ring falling off from the annular elastic member is reduced.

[0014] Furthermore, a first inner annular convex strip is integrally formed on the inner side of the annular flame retardant rubber ring near its top, and a first outer annular convex strip is integrally formed on the outer side of the annular flame retardant rubber ring near its top.

[0015] Furthermore, a second inner annular convex strip is integrally formed on the inner side of the annular flame retardant rubber ring near its bottom, and a second outer annular convex strip is integrally formed on the outer side of the annular flame retardant rubber ring near its bottom.

[0016] By adopting the above technical solution, the first inner annular ridge and the first outer annular ridge cooperate with each other, and the second inner annular ridge and the second outer annular ridge cooperate with each other, so that the annular flame retardant rubber ring and the sealed component are more tightly bonded, thereby enhancing the sealing effect of the annular flame retardant rubber ring.

[0017] Furthermore, a lower annular mounting groove is provided at the bottom of the annular flame-retardant rubber ring, an annular metal sheet is provided in the lower annular mounting groove, and an annular convex edge is integrally formed on both the inner and outer sides of the annular metal sheet.

[0018] By adopting the above technical solution, the lower annular mounting groove provides a certain amount of deformation space for the annular flame-retardant rubber ring during installation, reducing the difficulty of installation for workers. The annular metal sheet fills the gap in the lower annular mounting groove, ensuring the sealing effect of the annular flame-retardant rubber ring.

[0019] Furthermore, an annular gasket is provided in the annular groove, the top of the annular gasket abuts against the bottom of the O-ring, and the bottom of the annular gasket abuts against the inner bottom of the annular elastic member.

[0020] By adopting the above technical solution, the annular gasket plays a good supporting role for the O-ring, reducing the probability of the O-ring falling to the bottom of the annular elastic member during use.

[0021] In summary, the present invention has the following beneficial effects:

[0022] 1. In this application, the annular elastic member is made of a metal with good elastic properties, such as memory metal. The annular elastic member exerts a pressing force on the annular flame-retardant rubber rings on both sides of the annular groove, so that the high-temperature resistant flame-retardant rubber sealing ring and the hole it seals and the shaft are continuously pressed together, ensuring sealing performance.

[0023] 2. In this application, the provision of the upper annular mounting groove and the limitation of the position of the annular elastic member reduce the probability of the annular elastic member being separated from the annular flame-retardant rubber ring from the upper annular mounting groove during use, thereby enhancing the stability of the annular elastic member;

[0024] 3. In the present application, the annular gasket plays a good supporting role for the O-ring, reducing the probability of the O-ring falling to the bottom of the annular elastic member during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present utility model;

[0026] Figure 2 This is a schematic structural diagram of the first embodiment of the present invention for highlighting the annular elastic member;

[0027] Figure 3 yes Figure 2 A magnified schematic diagram of point A in the middle;

[0028] Figure 4 This is an explosion diagram of Example 1 of the present utility model;

[0029] Figure 5 It is a plan view of embodiment 2 of the present utility model.

[0030] In the figure: 1. annular flame-retardant rubber ring; 11. annular groove; 12. upper annular mounting groove; 13. first inner annular ridge; 14. first outer annular ridge; 15. second inner annular ridge; 16. second outer annular ridge; 17. lower annular mounting groove; 2. annular elastic member; 21. arc-shaped groove; 3. O-ring; 4. annular metal sheet; 41. annular ridge; 5. annular gasket; 6. notch. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] Example 1

[0033] like Figure 1-4 As shown, the embodiment of the present application discloses a high-temperature resistant and flame-retardant rubber sealing ring, including an annular flame-retardant rubber ring 1 (the annular flame-retardant rubber ring 1 is made of a material with good flame-retardant properties and high-temperature resistance, such as flame-retardant rubber, flame-retardant silicone, flame-retardant fluororubber, etc.), an annular groove 11 is provided on the top of the annular flame-retardant rubber ring 1, and an annular elastic part 2 is provided in the annular flame-retardant rubber ring 1, which is tightly pressed against the inner wall of the annular groove 11, and the cross-sections of the annular groove 11 and the annular elastic part 2 are both U-shaped.

[0034] The annular elastic member 2 is made of a metal with excellent elastic properties, such as memory metal. It exerts a compressive force on the annular flame-retardant rubber ring 1 on both sides of the annular groove 11, ensuring continuous contact between the high-temperature-resistant flame-retardant rubber sealing ring and the hole and shaft it seals (the hole and shaft can also be other structural components sealed with the rubber sealing ring), thereby ensuring sealing. To further enhance the flame retardancy and high-temperature resistance of the annular flame-retardant rubber ring 1, a tungsten carbide coating (not shown) can be uniformly electroplated on the surface of the annular flame-retardant rubber ring 1. This tungsten carbide coating has high hardness, high wear resistance, and good corrosion resistance, which significantly improves the performance and service life of the annular flame-retardant rubber ring 1.

[0035] An upper annular mounting groove 12 communicating with the annular groove 11 is provided on the top of the annular flame-retardant rubber ring 1 . The width of the upper annular mounting groove 12 is smaller than that of the annular groove 11 . The top of the annular elastic member 2 abuts against the inner top wall of the annular groove 11 .

[0036] The provision of the upper annular mounting groove 12 and the limitation of the position of the annular elastic member 2 reduce the probability of the annular elastic member 2 detaching from the annular flame-retardant rubber ring 1 from the upper annular mounting groove 12 during use, thereby enhancing the stability of the annular elastic member 2 .

[0037] An O-ring 3 is positioned near the top of the annular elastic member 2, with both sides of the O-ring 3 pressed against the inner surfaces of the annular elastic member 2. The O-ring 3 provides excellent support for the annular elastic member 2, and the combination of the annular elastic member 2 and the O-ring 3 further enhances the sealing effect of the high-temperature-resistant, flame-retardant rubber seal.

[0038] In order to reduce the probability of the O-ring 3 falling off from the annular elastic member 2 , an arc-shaped groove 21 cooperating with the O-ring 3 is provided in the annular elastic member 2 .

[0039] A first inner annular ridge 13 is integrally formed on the inner side of the annular flame-retardant rubber ring 1, near its top. A first outer annular ridge 14 is integrally formed on the outer side of the annular flame-retardant rubber ring 1, near its top. A second inner annular ridge 15 is integrally formed on the inner side of the annular flame-retardant rubber ring 1, near its bottom. A second outer annular ridge 16 is integrally formed on the outer side of the annular flame-retardant rubber ring 1, near its bottom.

[0040] The first inner annular ridge 13 cooperates with the first outer annular ridge 14 , and the second inner annular ridge 15 cooperates with the second outer annular ridge 16 , so that the annular flame retardant rubber ring 1 and the sealed component are more tightly bonded, thereby enhancing the sealing effect of the annular flame retardant rubber ring 1 .

[0041] The annular flame-retardant rubber ring 1 has a lower annular mounting groove 17 at its base. An annular metal sheet 4 is positioned within this groove, with annular ridges 41 integrally formed on both the inner and outer sides of the annular metal sheet 4. The lower annular mounting groove 17 provides the annular flame-retardant rubber ring 1 with room for deformation during installation, reducing the difficulty of installation. The annular metal sheet 4 fills the gap in the lower annular mounting groove 17, ensuring the sealing effect of the annular flame-retardant rubber ring 1.

[0042] In this embodiment, the annular elastic member 2 , the O-ring 3 and the annular metal sheet 4 are all provided with notches 6 .

[0043] The operating principle of a high-temperature, flame-retardant rubber sealing ring in this embodiment is as follows: the annular elastic member 2 is made of a metal with excellent elastic properties, such as memory metal. The annular elastic member 2 exerts a compressive force on the annular flame-retardant rubber ring 1 on both sides of the annular groove 11, thereby maintaining a tight seal between the high-temperature, flame-retardant rubber sealing ring and the hole and shaft it seals (the hole and shaft can also be other structural components sealed with the rubber sealing ring), thereby ensuring sealing. To further enhance the flame retardancy and high-temperature resistance of the annular flame-retardant rubber ring 1, a tungsten carbide coating (not shown) can be uniformly electroplated on the surface of the annular flame-retardant rubber ring 1. The tungsten carbide coating has high hardness, high wear resistance, and good corrosion resistance. These properties can significantly improve the performance and service life of the annular flame-retardant rubber ring 1.

[0044] Example 2

[0045] like Figure 5 As shown, the only difference between this embodiment and Example 1 is that an annular gasket 5 is further disposed within the annular groove 11. The top of the annular gasket 5 abuts the bottom of the O-ring 3, and the bottom of the annular gasket 5 abuts the inner bottom of the annular elastic member 2. The annular gasket 5 provides good support for the O-ring 3, reducing the probability of the O-ring 3 falling to the inner bottom of the annular elastic member 2 during use.

[0046] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A high-temperature resistant flame-retardant rubber sealing ring, comprising an annular flame-retardant rubber ring (1), wherein the top of the annular flame-retardant rubber ring (1) is provided with an annular groove (11), and wherein: An annular elastic member (2) is provided in the annular flame-retardant rubber ring (1) and is pressed tightly against the inner wall of the annular groove (11). The cross sections of the annular groove (11) and the annular elastic member (2) are both U-shaped.

2. The high temperature resistant and flame retardant rubber sealing ring according to claim 1, characterized in that: An upper annular mounting groove (12) communicating with the annular groove (11) is provided at the top of the annular flame-retardant rubber ring (1); the width of the upper annular mounting groove (12) is smaller than the width of the annular groove (11); and the top of the annular elastic member (2) abuts against the inner top wall of the annular groove (11).

3. The high temperature resistant and flame retardant rubber sealing ring according to claim 2, characterized in that: An O-ring (3) is provided in the annular elastic member (2) at a position close to the top thereof, and both sides of the O-ring (3) are tightly pressed against the inner surfaces of both sides of the annular elastic member (2).

4. The high temperature resistant and flame retardant rubber sealing ring according to claim 3, characterized in that: An arc-shaped groove (21) is provided in the annular elastic member (2) and matches the O-ring (3).

5. The high temperature resistant and flame retardant rubber sealing ring according to claim 4, characterized in that: A first inner annular convex strip (13) is integrally formed on the inner side of the annular flame-retardant rubber ring (1) near the top thereof, and a first outer annular convex strip (14) is integrally formed on the outer side of the annular flame-retardant rubber ring (1) near the top thereof.

6. The high temperature resistant and flame retardant rubber sealing ring according to claim 4, characterized in that: A second inner annular convex strip (15) is integrally formed on the inner side of the annular flame-retardant rubber ring (1) near its bottom, and a second outer annular convex strip (16) is integrally formed on the outer side of the annular flame-retardant rubber ring (1) near its bottom.

7. The high temperature resistant and flame retardant rubber sealing ring according to claim 6, characterized in that: A lower annular mounting groove (17) is provided at the bottom of the annular flame-retardant rubber ring (1), an annular metal sheet (4) is provided in the lower annular mounting groove (17), and an annular convex edge (41) is integrally formed on both the inner and outer sides of the annular metal sheet (4).

8. The high temperature resistant and flame retardant rubber sealing ring according to claim 3, characterized in that: An annular gasket (5) is also provided in the annular groove (11), the top of the annular gasket (5) abuts against the bottom of the O-ring (3), and the bottom of the annular gasket (5) abuts against the inner bottom of the annular elastic member (2).

Images