Anti-corrosion sealing ring

Abstract

The utility model discloses an anti-corrosion sealing ring which comprises a sealing ring body, and an extrusion boss is fixed on the lower end face of the sealing ring body. Clamping grooves are evenly formed in the upper end face of the sealing ring body, a corrosion-resistant layer is arranged on the outer side of the sealing ring body, and protruding blocks are fixed to the corrosion-resistant layer. An annular cavity is formed in the sealing ring body, the annular cavity is connected with an air guide groove, the air guide groove is connected with an expansion cavity, meanwhile, the air guide groove and the expansion cavity are formed in the sealing ring body, and the sealing ring body is made of ethylene propylene rubber. According to the anti-corrosion sealing ring, the inner and outer double-layer sealing ring structural design is adopted, the sealing effect can be guaranteed through the sealing ring body, the sealing ring body can be prevented from being directly contacted with corrosive liquid to be corroded and damaged in cooperation with the effect of the anti-corrosion layer, and the service life of the sealing ring body is guaranteed; the sealing effect can be further improved, and liquid leakage is avoided.

Description

Technical Field

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

[0002] A sealing ring is a commonly used seal to prevent the penetration of oil, gas, water, dust, etc. It is generally made of rubber and has a circular or square cross-section. It is widely used in food, beverage, dairy, pharmaceutical, chemical and other fluid production lines. It is mainly used for: connecting pipes to pipes, connecting pipes to valves, connecting pipes to instruments and meters, etc. In actual use, the liquid inside the pipe will contact the sealing ring for a long time, which will cause corrosion to the sealing ring, thereby affecting the service life of the sealing ring and causing pollution to food. For this reason, a corrosion-resistant sealing ring is first designed to better meet actual use needs. Utility Model Content

[0003] The utility model aims to provide an anti-corrosion sealing ring to solve the problem that the sealing ring is easily damaged by corrosion in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-corrosion sealing ring, comprising a sealing ring body, the lower end face of which is fixed with an extrusion boss; the upper end face of the sealing ring body is evenly provided with card grooves, the outer side of the sealing ring body is provided with a corrosion-resistant layer, and a protrusion is fixed on the corrosion-resistant layer.

[0005] Preferably, an annular cavity is provided in the sealing ring body, and the annular cavity is connected to the air guide groove, and the air guide groove is connected to the expansion chamber, and at the same time, the air guide groove and the expansion chamber are both provided in the sealing ring body, and the sealing ring body is made of EPDM rubber. The airbag sealing mechanism is formed by the above structure, thereby ensuring the sealing effect of the device.

[0006] Preferably, two extrusion bosses are provided on the sealing ring body, and the cross section of the extrusion boss is a semicircular structure. Through the action of the extrusion boss, the extrusion boss can be better fitted to the pipe fitting, thereby better ensuring the sealing effect.

[0007] Preferably, the material of the corrosion-resistant layer is polytetrafluoroethylene, and the thickness of the corrosion-resistant layer is 0.5mm-1mm. Through the effect of the corrosion-resistant layer, the sealing ring body can be prevented from directly contacting with the corrosive liquid, thereby ensuring the service life of the sealing ring body.

[0008] Preferably, the upper end surface of the corrosion-resistant layer is also provided with a friction ring with an annular structure, and the surface of the friction ring is a rough structure. Through the action of the friction ring, the friction force between the friction ring and the bottle cap can be increased to prevent the corrosion-resistant layer from sliding.

[0009] Preferably, the main body (EPDM) and the outer layer PTFE are injection molded by utilizing the temperature difference to fully combine the two materials to ensure that the two materials will not separate during use.

[0010] Preferably, the protrusions are distributed at equal angles with respect to the center of the corrosion-resistant layer, and there is a one-to-one correspondence between the protrusions and the card slots, and the protrusions and the card slots are snap-fitted together. Through the snap-fitting action between the protrusions and the card slots, the integrity of the sealing ring body and the corrosion-resistant layer can be ensured, and separation of the sealing ring body and the corrosion-resistant layer can be avoided.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the anti-corrosion sealing ring adopts an inner and outer double-layer sealing ring structure design, and the sealing ring body can ensure the sealing effect. With the effect of the corrosion-resistant layer, the sealing ring body can be prevented from being corroded and damaged by direct contact with the corrosive liquid, thereby ensuring the service life of the sealing ring body. With the elastic airbag sealing mechanism, the sealing effect can be further improved to avoid liquid leakage. The specific contents are as follows:

[0012] The anti-corrosion sealing ring is provided with an extrusion boss. When sealing, pressure is generated on the cavity, and the extrusion boss can be expanded in cooperation with the air guide groove and the expansion cavity, while taking into account the softness of the EPDM (main body) material and the anti-aging, corrosion resistance, wear resistance and long service life of the Teflon PTFE material, thereby further ensuring the sealing effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the sealing ring body of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the sealing ring body of the utility model;

[0015] Figure 3 This is a schematic diagram of the exploded three-dimensional structure of the sealing ring body and the corrosion-resistant layer of the utility model;

[0016] Figure 4 It is a partially enlarged three-dimensional structural schematic diagram of the sealing ring body and the corrosion-resistant layer of the utility model.

[0017] In the figure: 1. sealing ring body; 101. cavity; 102. air guide groove; 103. expansion cavity; 2. extrusion boss; 3. slot; 4. corrosion-resistant layer; 401. friction ring; 5. bump. DETAILED DESCRIPTION

[0018] 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 field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 4 The utility model provides a technical solution: an anti-corrosion sealing ring, comprising a sealing ring body 1, a lower end surface of which is fixed with an extrusion boss 2; an upper end surface of the sealing ring body 1 is evenly provided with card grooves 3, a corrosion-resistant layer 4 is arranged on the outer side of the sealing ring body 1, and a protrusion 5 is fixed on the corrosion-resistant layer 4.

[0020] The material of the corrosion-resistant layer 4 is polytetrafluoroethylene, and the thickness of the corrosion-resistant layer 4 is 0.5mm-1mm; the protrusions 5 are distributed at equal angles with respect to the center of the corrosion-resistant layer 4, and the protrusions 5 and the card slots 3 are distributed in a one-to-one correspondence, and the protrusions 5 and the card slots 3 are snap-fitted;

[0021] When using this anti-corrosion seal ring, if Figure 1-Figure 4 As shown, the sealing ring body 1 is formed by injection molding, and when the corrosion-resistant layer 4 is added, it is also formed by injection molding, so that the corrosion-resistant layer 4, the protrusion 5, the card slot 3 and the sealing ring body 1 form an integrated structure, and the card action between the protrusion 5 and the card slot 3 can ensure the stability of the connection between the corrosion-resistant layer 4 and the sealing ring body 1, and avoid the occurrence of relative sliding between the corrosion-resistant layer 4 and the sealing ring body 1;

[0022] An annular cavity 101 is provided in the sealing ring body 1, and the annular cavity 101 is connected to the air guide groove 102, and the air guide groove 102 is connected to the expansion cavity 103, and the air guide groove 102 and the expansion cavity 103 are both provided in the sealing ring body 1, and the sealing ring body 1 is made of ethylene propylene rubber; two extrusion bosses 2 are provided on the sealing ring body 1, and the cross section of the extrusion bosses 2 is a semicircular structure; a friction ring 401 with an annular structure is also provided on the upper end surface of the corrosion-resistant layer 4, and the surface of the friction ring 401 is a rough structure;

[0023] During use, if Figure 1-Figure 4As shown, by making one side of the friction ring 401 on the corrosion-resistant layer 4 contact with the valve, the friction force between the corrosion-resistant layer 4 and the valve can be ensured by the action of the friction ring 401. When the valve and the pipeline are matched, the pipeline mouth is just located between the two extrusion bosses 2. During the assembly process of the valve and the pipeline, the pipeline mouth will squeeze the annular cavity 101, so that the air in the annular cavity 101 enters the expansion cavity 103 through the air guide groove 102, and then the extrusion boss 2 expands and contacts closely with the pipeline mouth. Combined with the action of the sealing ring body 1, the sealing effect can be ensured, and the corrosion-resistant layer 4 can realize the protective effect of the sealing ring body 1. Through the corrosion-resistant effect of polytetrafluoroethylene, the sealing ring body 1 can be effectively prevented from being corroded and damaged, and the service life of the sealing ring body 1 can be effectively improved. This is the working principle of the anti-corrosion sealing ring.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-corrosion sealing ring, comprising a sealing ring body (1), wherein an extrusion boss (2) is fixed to the lower end surface of the sealing ring body (1); characterized in that: The upper end surface of the sealing ring body (1) is evenly provided with grooves (3), the outer side of the sealing ring body (1) is provided with a corrosion-resistant layer (4), and a protrusion (5) is fixed on the corrosion-resistant layer (4).

2. The anti-corrosion sealing ring according to claim 1, characterized in that: An annular cavity (101) is provided in the sealing ring body (1), and the annular cavity (101) and the air guide groove (102) are connected to each other, and the air guide groove (102) and the expansion cavity (103) are connected to each other, and the air guide groove (102) and the expansion cavity (103) are both provided in the sealing ring body (1), and the sealing ring body (1) is made of ethylene propylene rubber.

3. The anti-corrosion sealing ring according to claim 1, characterized in that: Two extrusion bosses (2) are arranged on the sealing ring body (1), and the cross section of the extrusion bosses (2) is a semicircular structure.

4. The anti-corrosion sealing ring according to claim 1, characterized in that: The material of the corrosion-resistant layer (4) is polytetrafluoroethylene, and the thickness of the corrosion-resistant layer (4) is 0.5 mm-1 mm.

5. The anti-corrosion sealing ring according to claim 1, characterized in that: The upper end surface of the corrosion-resistant layer (4) is also provided with a friction ring (401) with an annular structure, and the surface of the friction ring (401) is a rough structure.

6. The anti-corrosion sealing ring according to claim 1, characterized in that: The protrusions (5) are distributed at equal angles with respect to the center of the corrosion-resistant layer (4), and the protrusions (5) and the slots (3) are distributed in a one-to-one correspondence, and the protrusions (5) and the slots (3) are in a snap-fit ​​connection.

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