Flame-retardant rubber sealing ring

Abstract

The utility model belongs to the technical field of sealing rings, and discloses a flame-retardant rubber sealing ring which comprises an annular rubber ring, an annular groove is formed in the top of the annular rubber ring, an annular metal ring is arranged at the bottom in the annular groove, and the side wall of the annular metal ring abuts against the inner wall of the annular groove. The flame-retardant rubber sealing ring has good structural strength while having good elastic performance and flame-retardant performance, the service life of the sealing ring is prolonged, and the sealing performance of the flame-retardant rubber sealing ring in the using process is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sealing ring, especially relates to a flame -retardant rubber sealing ring. BACKGROUND

[0002] The flame -retardant sealing ring is usually made of materials with flame -retardant properties, such as flame -retardant rubber, flame -retardant silica gel, flame -retardant fluorine rubber, etc. These materials can self-extinguish or slow down the burning speed when burning, thereby playing a flame -retardant role. The rubber sealing ring is usually sleeved on the shaft parts of the mechanical equipment to prevent the leakage of lubricating oil and other liquids in the mechanical equipment along the shaft parts, thereby realizing the sealing of the mechanical equipment.

[0003] The general sealing ring in the prior art is usually a simple O-ring, which is applied to realize sealing between a hole and a rotating shaft. The rotation of the shaft will sway within a certain range, and the shaft and the hole will frequently extrude the O-ring. After long-term use, the O-ring may become loose, affecting the sealing performance between the rotating shaft, and therefore, the sealing ring in the related art needs to be improved and designed. UTILITY MODEL CONTENT

[0004] In order to solve the above problems, the utility model provides a flame -retardant rubber sealing ring.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a flame -retardant rubber sealing ring, comprising an annular rubber ring, the annular rubber ring is provided with an annular groove at the top, the annular groove is provided with an annular metal ring at the bottom, and the annular metal ring side wall is tightly contacted with the annular groove inner wall.

[0006] By adopting the above technical scheme, the annular rubber ring is made of rubber with good elastic performance and flame -retardant properties, such as flame -retardant rubber, flame -retardant silica gel, flame -retardant fluorine rubber, etc. The annular metal ring is arranged in the annular groove, which provides good structural support for the annular rubber ring, so that the flame -retardant rubber sealing ring has good structural strength while having good elastic performance and flame -retardant properties, which is beneficial to prolong the service life of the sealing ring and ensure the sealing performance of the flame -retardant rubber sealing ring during use.

[0007] Further, the surface of the annular rubber ring is uniformly provided with a tungsten carbide coating.

[0008] By adopting the above technical scheme, the tungsten carbide coating can be arranged on the surface of the annular rubber ring in the form of electroplating, dipping or coating. The tungsten carbide coating has high hardness, high wear resistance and good corrosion resistance, which can significantly improve the performance and service life of the annular rubber ring.

[0009] Further, an arc-shaped protrusion is fixed on the inner wall of the annular groove near the top of the annular rubber ring.

[0010] By adopting the above technical scheme, the arc-shaped protrusion is arranged on the inner wall of the annular groove near the top of the annular rubber ring, so that the annular metal ring is well limited, and the probability of falling out of the annular metal ring from the annular groove is reduced.

[0011] Further, an annular flange is integrally formed on the inner wall of the annular rubber ring near the top thereof.

[0012] By adopting the above technical scheme, the annular flange is arranged, so that the inner side of the annular rubber ring is more closely attached to the shaft to be sealed, and the sealing performance is improved to a certain extent.

[0013] Further, an annular accommodating groove is arranged in the annular rubber ring and is in communication with the bottom of the annular groove, the cross section of the annular accommodating groove is in a rhombic shape, and the side wall of the annular metal ring is tightly abutted against the inner wall of the annular accommodating groove.

[0014] By adopting the above technical scheme, the width of the middle part of the annular accommodating groove is greater than the width of the annular groove, so that the stability of the annular metal ring during use of the flame-retardant rubber seal is improved.

[0015] Further, a notch is arranged on the annular metal ring.

[0016] By adopting the above technical scheme, the notch is arranged, so that the annular metal ring has a certain adaptability, and the probability of the annular rubber ring being difficult to reset after being pressed for a long time is reduced.

[0017] Further, an inner annular protrusion is arranged on the middle part of the inner side of the annular rubber ring, and an outer annular protrusion is arranged on the middle part of the outer side of the annular rubber ring, before assembling the flame-retardant rubber seal, the staff needs to first place the annular rubber ring between the shaft to be sealed and the hole, and then press the annular metal ring into the annular groove and the annular accommodating groove from the notch.

[0018] In summary, the utility model has the following beneficial effects:

[0019] 1、In the application, the annular rubber ring is made of rubber with good elastic performance and flame-retardant performance, such as flame-retardant rubber, flame-retardant silicone rubber and flame-retardant fluororubber, the annular metal ring is arranged in the annular groove, and good structural support effect is achieved on the annular rubber ring, so that the flame-retardant rubber seal has good structural strength while having good elastic performance and flame-retardant performance, which is beneficial to prolong the service life of the seal and ensure the sealing performance of the flame-retardant rubber seal during use.

[0020] 2、In the application, the tungsten carbide coating can be arranged on the surface of the annular rubber ring by electroplating, dipping or coating. The tungsten carbide coating has high hardness, high wear resistance and good corrosion resistance, which can significantly improve the performance and service life of the annular rubber ring.

[0021] 3、In the application, the arc-shaped convex strip is arranged at the position close to the top of the annular rubber ring, which plays a good limiting effect on the annular metal ring and reduces the probability of the annular metal ring falling out of the annular groove. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the embodiment of the utility model;

[0023] Figure 2 is Figure 1 is a schematic diagram of the structure from another perspective;

[0024] Figure 3 is a schematic diagram of the structure for highlighting the annular metal ring of the embodiment of the utility model;

[0025] Figure 4 is Figure 3 is an enlarged schematic diagram of position A in figure 1;

[0026] Figure 5 is an exploded schematic diagram of the embodiment of the utility model.

[0027] In the figure: 1, annular rubber ring; 11, annular groove; 12, annular body; 13, annular accommodating groove; 2, annular metal ring; 21, notch; 3, tungsten carbide coating; 4, arc-shaped convex strip; 5, inner annular protrusion; 6, outer annular protrusion. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application; obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application, and all other embodiments obtained by those skilled in the art without creative labor on the basis of the embodiments in the application belong to the protection scope of the application.

[0029] As Figures 1-5 shown, the application discloses a fire-retardant rubber sealing ring, which comprises an annular rubber ring 1, the top of the annular rubber ring 1 is provided with an annular groove 11, the inner bottom of the annular groove 11 is provided with an annular metal ring 2 (the annular metal ring 2 is made of metal with certain elastic performance and shape deformation reset function, such as memory metal), the side wall of the annular metal ring 2 is tightly abutted against the inner wall of the annular groove 11 (when assembling, the worker only needs to force the annular metal ring 2 into the annular groove 11 from the opening of the annular groove 11).

[0030] The annular rubber ring 1 is made of rubber with good elastic properties and flame retardant properties, such as flame-retardant rubber, flame-retardant silicone rubber, and flame-retardant fluororubber. The annular metal ring 2 is arranged in the annular groove 11 and provides good structural support for the annular rubber ring 1, so that the flame-retardant rubber seal ring has good elastic properties, flame retardant properties, and good structural strength, which is beneficial to prolong the service life of the seal ring and ensure the sealing performance of the flame-retardant rubber seal ring during use.

[0031] The annular rubber ring 1 is uniformly provided with a tungsten carbide coating 3 on the surface. The tungsten carbide coating 3 can be arranged on the surface of the annular rubber ring 1 by electroplating, dipping, or coating. The tungsten carbide coating 3 has high hardness, high wear resistance, and good corrosion resistance, which can significantly improve the performance and service life of the annular rubber ring 1.

[0032] An arc-shaped protrusion 4 is fixed to the inner wall of the annular groove 11 near the top of the annular rubber ring 1. The top of the arc-shaped protrusion 4 is flush with the top of the annular rubber ring 1. The arc-shaped protrusion 4 is arranged near the top of the annular rubber ring 1 in the annular groove 11, which provides good limiting effect for the annular metal ring 2 and reduces the probability of the annular metal ring 2 falling out of the annular groove 11.

[0033] An annular rim 12 is integrally formed on the inner wall of the annular rubber ring 1 near the top. The arrangement of the annular rim 12 makes the inner side of the annular rubber ring 1 and the shaft it seals fit more tightly, which enhances the sealing performance to some extent.

[0034] An annular receiving groove 13 is arranged in the annular rubber ring 1 and communicates with the bottom of the annular groove 11. The cross section of the annular receiving groove 13 is rhombic, and the side wall of the annular metal ring 2 is tightly pressed against the inner wall of the annular receiving groove 13. During the installation of the annular rubber ring 1 in the hole it seals, the arrangement of the annular groove 11 and the annular receiving groove 13 increases the compressed space of the annular rubber ring 1, which reduces the installation difficulty of the annular rubber ring 1. The width of the annular receiving groove 13 in the middle is greater than the width of the annular groove 11, which enhances the stability of the annular metal ring 2 during use of the flame-retardant rubber seal ring.

[0035] A notch 21 is arranged on the annular metal ring 2. The arrangement of the notch 21 enables the annular metal ring 2 to have certain adaptive deformation ability, which reduces the probability of the annular metal ring 2 being difficult to reset after the annular rubber ring 1 is compressed for a long time. In addition, the arrangement of the notch 21 facilitates the staff to set the annular metal ring 2 on the corresponding shaft of the annular rubber ring 1 from the notch 21 after pulling open the annular metal ring 2, and then extruding it into the annular receiving groove 13 from the opening of the annular groove 11.

[0036] The inner ring-shaped protrusion 5 is arranged at the middle part of the inner side of the annular rubber ring 1, and the outer ring-shaped protrusion 6 is arranged at the middle part of the outer side of the annular rubber ring 1; before assembling the fire-retardant rubber sealing ring, the staff needs to firstly place the annular rubber ring 1 between the sealed shaft and hole, and then extrude the annular metal ring 2 into the annular groove 11 and the annular accommodating groove 13 from the gap 21.

[0037] The fire-retardant rubber sealing ring has the advantages that: the annular rubber ring 1 is made of rubber with good elastic performance and fire-retardant performance, such as fire-retardant rubber, fire-retardant silica gel, fire-retardant fluorine rubber, etc.; the annular metal ring 2 is arranged in the annular groove 11, and has good structural support effect on the annular rubber ring 1, so that the fire-retardant rubber sealing ring has good structural strength while having good elastic performance and fire-retardant performance, which is beneficial to prolong the service life of the sealing ring and ensure the sealing property of the fire-retardant rubber sealing ring in use.

[0038] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments; any technical scheme falling within the idea of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principle of the present application are also considered as the protection scope of the present application.

Claims

1. A fire-retardant rubber seal ring, characterized by: The application relates to a rubber ring (1) provided with an annular groove (11) at the top, an annular metal ring (2) fixed to the bottom of the annular groove (11), and an arc-shaped convex strip (4) fixed to the inner wall of the annular groove (11) near the top of the rubber ring (1).

2. The fire-retardant rubber sealing ring according to claim 1, characterized in that: The surface of the rubber ring (1) is uniformly provided with a tungsten carbide coating (3).

3. The fire-retardant rubber sealing ring according to claim 2, characterized in that: The top of the arc-shaped convex strip (4) is flush with the top of the rubber ring (1).

4. The fire-retardant rubber sealing ring according to claim 3, characterized in that: An annular ridge (12) is integrally formed on the inner wall of the rubber ring (1) near the top.

5. The fire-retardant rubber seal ring according to claim 4, characterized in that: An annular accommodating groove (13) is arranged in the rubber ring (1) and communicates with the bottom of the annular groove (11), the cross section of the annular accommodating groove (13) is in the shape of a rhombus, and the side wall of the annular metal ring (2) is tightly fitted with the inner wall of the annular accommodating groove (13).

6. The fire-retardant rubber sealing ring according to claim 5, characterized in that: The annular metal ring (2) is provided with a notch (21).

7. The fire-retardant rubber sealing ring according to claim 5, characterized in that: An inner annular protrusion (5) is arranged on the inner side of the rubber ring (1) and an outer annular protrusion (6) is arranged on the outer side of the rubber ring (1).

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