Flame-retardant rubber sealing ring

Abstract

The utility model discloses a flame-retardant rubber sealing ring, which relates to the technical field of sealing rings, and particularly comprises a rubber ring body, an inner concave part is arranged on the upper surface of the rubber ring body, the inner concave part is of an annular structure, a heat dissipation groove is formed in the upper surface of the inner concave part, a sealing surface is arranged on the inner arc surface of the rubber ring body, and the sealing surface is of a hollow structure. A protruding part is arranged on the side, close to the inner concave part, of the rubber ring body, a contact face is arranged on one side of the protruding part, an outer annular lip part is arranged on the edge of one side of the lower surface of the rubber ring body, an inner annular lip part is arranged on the lower surface of the protruding part, and an elastic framework is movably connected to the connecting face of the outer annular lip part in a clamped mode. The outer annular lip part can be movably clamped into the bearing cavity, and under the elasticity of the elastic framework, the annular abutting end on one side of the elastic framework can be extruded by stress to be close to the rubber ring body to be fixed when the elastic framework works, so that the rubber ring body is of an integrated structure, and the elongation at break and the tearing strength of the rubber ring body are improved.

Description

Technical Field

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

[0002] A flame-retardant rubber sealing ring is a special sealing product, which is made of special flame-retardant rubber materials and can resist the invasion of flames to a certain extent. This kind of sealing ring is usually used in environments that require fire safety, such as machinery, electronics, aviation, optoelectronics, fluid equipment and other fields.

[0003] In existing technologies, for some special occasions, it is required that the rubber ring has good flame retardancy to ensure the normal operation of the equipment and the safety of personnel. However, the rubber ring is a vulnerable part with low tensile tear strength and compression set. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model provides a flame-retardant rubber sealing ring, which solves the problems of good flame retardancy of the rubber ring and low tensile tear strength of the rubber ring.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A flame-retardant rubber sealing ring includes a rubber ring body. An inner concave portion is provided on the upper surface of the rubber ring body. The inner concave portion is of an annular structure. Heat dissipation grooves are formed on the upper surface of the inner concave portion. A sealing surface is provided on the inner arc surface of the rubber ring body. A convex portion is provided on one side of the rubber ring body close to the inner concave portion. A contact surface is provided on one side of the convex portion. An outer annular lip is provided at one side edge of the lower surface of the rubber ring body. An inner annular lip is provided on the lower surface of the convex portion. The cross-section of the outer annular lip and the rubber ring body is of an L-shaped structure. A connecting surface is provided on the lower surface of the outer annular lip. An elastic skeleton is movably clamped on the connecting surface of the outer annular lip.

[0006] Optionally, a ring-shaped outer convex end is provided on one side of the upper surface of the elastic skeleton. The ring-shaped outer convex end is placed on the surface of the outer annular lip. A ring-shaped pressing end is provided on the upper surface of the elastic skeleton close to the ring-shaped outer convex end.

[0007] Optionally, a bearing cavity is provided between the ring-shaped pressing end and the ring-shaped outer convex end. The inner bottom wall of the bearing cavity is clamped with the rubber ring body. A hollow through structure is formed between the elastic skeleton and the rubber ring body.

[0008] Optionally, an extension end is provided on the inner arc surface of the elastic skeleton. The upper surface of the extension end corresponds to the sealing surface of the lower surface of the rubber ring body. The included angle between the annular pressing end and the elastic skeleton is 95° to 105°. The outer annular lip will be movably clamped into the bearing cavity. Under its own elasticity, one side of the annular pressing end will be pressed against the annular pressing end close to the rubber ring body during work to fix it, making it an integral structure, thereby improving the elongation at break and tear strength of the rubber ring body.

[0009] Optionally, heat dissipation holes are provided on the lower surface of the elastic skeleton. The number of the heat dissipation holes is several and they are evenly distributed in a circular array.

[0010] Optionally, a high-temperature resistant coating is provided on the outer wall of the rubber ring body, and a first fireproof and flame-retardant layer is provided inside the high-temperature resistant coating.

[0011] Optionally, a second fireproof and flame-retardant layer is provided on one side of the high-temperature resistant coating close to the first fireproof and flame-retardant layer. The first fireproof and flame-retardant layer is a silicone rubber fiberglass cloth layer, and the second fireproof and flame-retardant layer is a basalt mesh cloth layer. Through the first fireproof and flame-retardant layer and the second fireproof and flame-retardant layer inside the high-temperature resistant coating, it has good acid and alkali resistance, ultraviolet resistance, durability and strong flame retardancy, can better protect the silicone rubber sealing ring, and enhance its fireproof and flame-retardant performance.

[0012] The present utility model provides a flame-retardant rubber sealing ring, which has the following beneficial effects:

[0013] 1. The outer annular lip will be movably clamped into the bearing cavity. Under its own elasticity, one side of the annular pressing end will be pressed against the annular pressing end close to the rubber ring body during work to fix it, making it an integral structure, thereby improving the elongation at break and tear strength of the rubber ring body.

[0014] 2. Through the first fireproof and flame-retardant layer and the second fireproof and flame-retardant layer inside the high-temperature resistant coating, it has good acid and alkali resistance, ultraviolet resistance, durability and strong flame retardancy, can better protect the silicone rubber sealing ring, and enhance its fireproof and flame-retardant performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, other implementation drawings can be obtained according to the provided drawings without creative efforts.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic cross-sectional structure diagram of the present utility model;

[0018] Figure 3 is a schematic top view structure diagram of the present utility model;

[0019] Figure 4 is a schematic side view plane structure diagram of the present utility model;

[0020] Figure 5 is a schematic structure diagram of the flame retardant coating of the present utility model.

[0021] In the figure: 1, rubber ring body; 101, concave part; 102, heat dissipation groove; 103, sealing surface; 104, protruding part; 105, contact surface; 106, outer annular lip; 107, inner annular lip; 2, elastic skeleton; 201, annular outer convex end; 202, annular abutting end; 203, bearing cavity; 204, extension end; 205, heat dissipation hole; 3, high temperature resistant coating; 301, first fire and flame retardant layer; 302, second fire and flame retardant layer. Specific embodiments

[0022] The structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present utility model. Therefore, they do not have technical substantial significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed by the present utility model.

[0023] Please refer to Figures 1 to 5, the present utility model provides a technical solution: a flame-retardant rubber sealing ring, including a rubber ring body 1. An inner concave portion 101 is provided on the upper surface of the rubber ring body 1. The inner concave portion 101 is in a ring structure. Heat dissipation grooves 102 are provided on the upper surface of the inner concave portion 101. A sealing surface 103 is provided on the inner arc surface of the rubber ring body 1. A protruding portion 104 is provided on one side of the rubber ring body 1 close to the inner concave portion 101. A contact surface 105 is provided on one side of the protruding portion 104. An outer annular lip 106 is provided at the edge of one side of the lower surface of the rubber ring body 1. An inner annular lip 107 is provided on the lower surface of the protruding portion 104. The cross-section of the outer annular lip 106 and the rubber ring body 1 is an L-shaped structure. A connecting surface is provided on the lower surface of the outer annular lip 106. An elastic skeleton 2 is movably clamped to the connecting surface of the outer annular lip 106. A ring-shaped outer convex end 201 is provided on one side of the upper surface of the elastic skeleton 2. One side of the ring-shaped outer convex end 201 is placed on the surface of the outer annular lip 106. A ring-shaped abutting end 202 is provided on the upper surface of the elastic skeleton 2 close to the ring-shaped outer convex end 201. A bearing cavity 203 is provided between the ring-shaped abutting end 202 and the ring-shaped outer convex end 201. The inner bottom wall of the bearing cavity 203 is clamped with the rubber ring body 1. A hollow through structure is formed between the elastic skeleton 2 and the rubber ring body 1. An extension end 204 is provided on the inner arc surface of the elastic skeleton 2. The upper surface of the extension end 204 corresponds to the sealing surface 103 on the lower surface of the rubber ring body 1. The included angle between the ring-shaped abutting end 202 and the elastic skeleton 2 is 95° to 105°.

[0024] The outer annular lip 106 is movably clamped into the bearing cavity 203. Under its own elasticity, one side of the elastic skeleton 2, the ring-shaped abutting end 202, will be forced to squeeze against the ring-shaped abutting end 202 close to the rubber ring body 1 for fixation during work, making it an integral structure, thereby improving the elongation at break and tear strength of the rubber ring body 1.

[0025] Heat dissipation holes 205 are provided on the lower surface of the elastic skeleton 2. The number of heat dissipation holes 205 is several, and they are evenly distributed in a circular array. A high-temperature resistant coating 3 is provided on the outer wall of the rubber ring body 1. A first fire-retardant layer 301 is provided inside the high-temperature resistant coating 3. A second fire-retardant layer 302 is provided on one side of the high-temperature resistant coating 3 close to the first fire-retardant layer 301. The first fire-retardant layer 301 is a silicone rubber fiberglass cloth layer, and the second fire-retardant layer 302 is a basalt mesh cloth layer.

[0026] Due to the first fire-retardant layer 301 and the second fire-retardant layer 302 inside the high-temperature resistant coating 3, it has good acid and alkali resistance, ultraviolet resistance, durability, and strong flame retardancy, which can better protect the silicone rubber sealing ring and enhance its fire-retardant performance.

[0027] In the present utility model, the working steps of the device are as follows:

[0028] The rubber ring body 1 itself relies on the high-temperature resistant coating 3 on the outer arc surface. The first fireproof and flame-retardant layer 301 inside the high-temperature resistant coating 3 is a silicone rubber fiberglass cloth layer. The silicone rubber fiberglass composite cloth is based on a high-temperature resistant and high-strength fiberglass cloth and is compounded by silicone rubber through a special process. It is a high-performance material with excellent high-temperature and low-temperature resistance, softness and toughness, good chemical corrosion resistance, heat aging resistance, and weather aging resistance. It can better protect the silicone rubber sealing ring and enhance its fireproof and flame-retardant performance. The second fireproof and flame-retardant layer 302 on the other side is a basalt mesh cloth layer. Since the basalt mesh cloth is based on basalt fiber and is soaked and coated with a polymer anti-emulsion, it has good acid and alkali resistance, ultraviolet resistance, durability, and strong flame retardancy. It can be used in a high-temperature environment for a long time, thus protecting the silicone rubber sealing ring and enhancing its fireproof and flame-retardant performance. At the same time, the outer annular lip 106 of the rubber ring body 1 will be movably clamped into the bearing cavity 203. Under its own elasticity, the annular pressing end 202 on one side will be pressed against the annular pressing end 202 close to the rubber ring body 1 during work to be fixed, making it an integral structure, thereby improving the elongation at break and tear strength of the rubber ring body 1.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flame-retardant rubber sealing ring, comprising a rubber ring body (1), characterized in that: The upper surface of the rubber ring body (1) is provided with a concave portion (101). The concave portion (101) is in a ring structure. The upper surface of the concave portion (101) is provided with heat dissipation grooves (102). The inner arc surface of the rubber ring body (1) is provided with a sealing surface (103). One side of the rubber ring body (1) close to the concave portion (101) is provided with a protruding portion (104). One side of the protruding portion (104) is provided with a contact surface (105). One side edge of the lower surface of the rubber ring body (1) is provided with an outer annular lip (106). The lower surface of the protruding portion (104) is provided with an inner annular lip (107). The cross section of the outer annular lip (106) and the rubber ring body (1) is an L-shaped structure. The lower surface of the outer annular lip (106) is provided with a connecting surface. The connecting surface of the outer annular lip (106) is movably clamped with an elastic skeleton (2).

2. A flame-retardant rubber sealing ring according to claim 1, characterized in that: One side of the upper surface of the elastic skeleton (2) is provided with an annular outer convex end (201). One side of the annular outer convex end (201) is placed on the surface of the outer annular lip (106). One side of the upper surface of the elastic skeleton (2) close to the annular outer convex end (201) is provided with an annular abutting end (202).

3. A flame-retardant rubber sealing ring according to claim 2, characterized in that: A bearing cavity (203) is arranged between the annular abutting end (202) and the annular outer convex end (201). The inner bottom wall of the bearing cavity (203) is clamped with the rubber ring body (1). A hollow through structure is formed between the elastic skeleton (2) and the rubber ring body (1).

4. A flame-retardant rubber sealing ring according to claim 3, characterized in that: The inner arc surface of the elastic skeleton (2) is provided with an extending end (204). The upper surface of the extending end (204) corresponds to the sealing surface (103) of the lower surface of the rubber ring body (1). The included angle between the annular abutting end (202) and the elastic skeleton (2) is 95° to 105°.

5. A flame-retardant rubber sealing ring according to claim 4, characterized in that: The lower surface of the elastic skeleton (2) is provided with heat dissipation holes (205). The number of the heat dissipation holes (205) is several, and they are evenly distributed in a circular array form.

6. A flame-retardant rubber sealing ring according to claim 5, characterized in that: A high temperature resistant coating (3) is arranged outside the rubber ring body (1). A first fireproof and flame retardant layer (301) is arranged inside the high temperature resistant coating (3).

7. A flame-retardant rubber sealing ring according to claim 6, characterized in that: A second fireproof and flame retardant layer (302) is arranged on one side of the high temperature resistant coating (3) close to the first fireproof and flame retardant layer (301). The first fireproof and flame retardant layer (301) is a silicone rubber fiberglass cloth layer. The second fireproof and flame retardant layer (302) is a basalt grid cloth layer.

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