An explosion-proof bidirectional O-ring

Abstract

The utility model discloses an explosion-proof bidirectional O-type sealing ring, which relates to the technical field of sealing rings, comprises a sealing ring main body, a first explosion-proof sealing ring and a second explosion-proof sealing ring which are separately arranged on both sides of the sealing ring main body, wherein a reinforcing structure ring is arranged inside the first explosion-proof sealing ring, one end of the sealing ring main body is provided with two V-shaped annular grooves with different diameters, one end of the second explosion-proof sealing ring is fixedly connected with two supporting rings corresponding to the V-shaped annular grooves, and an outer wall of a ring formed by the first explosion-proof sealing ring, the sealing ring main body and the second explosion-proof sealing ring is provided with a sealing layer; in the technical solution provided by the utility model, it is ensured that the explosion-proof bidirectional O-type sealing ring can effectively resist the impact of internal and external pressures through the synergistic effect between various components under bidirectional pressure conditions, has good explosion-proof performance, reduces leakage risks, and ensures the safety of equipment and the environment.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, in particular to an explosion-proof bidirectional O-type sealing ring. Background Art

[0002] The development background of explosion-proof bidirectional O-rings stems from the growing demand for safe and efficient industrial production and special equipment in modern society. With the rapid development of high-risk industries such as petroleum, chemical, natural gas, aerospace, military equipment and nuclear power, the requirements for equipment sealing systems are becoming more and more stringent, especially in the face of high pressure, high temperature, flammable and explosive environments. Traditional sealing technology is often difficult to meet safety standards.

[0003] The industry urgently needs a seal that can adapt to bidirectional pressure changes, maintain a highly reliable seal even under extreme conditions, and have explosion-proof functions. Traditional seal designs often focus on single-way sealing, or are insufficient in terms of material strength, temperature resistance, chemical resistance, etc., and cannot meet the high standards of explosion-proof and bidirectional sealing at the same time. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an explosion-proof bidirectional O-type sealing ring to solve the problems in the background technology.

[0005] In view of this, the utility model provides an explosion-proof bidirectional O-ring, comprising a sealing ring body, a first explosion-proof sealing ring and a second explosion-proof sealing ring respectively arranged on both sides of the sealing ring body, a reinforcing structure ring is arranged inside the first explosion-proof sealing ring, one end of the sealing ring body is provided with two V-shaped annular grooves with different diameters, one end of the second explosion-proof sealing ring is fixedly connected with two supporting rings corresponding to the V-shaped annular grooves, and the outer wall of the ring formed by the first explosion-proof sealing ring, the sealing ring body and the second explosion-proof sealing ring is provided with a sealing layer.

[0006] Preferably: a raised ring is provided at one end of the first explosion-proof sealing ring that is in contact with the sealing ring body, and a fitting groove is provided at one end of the sealing ring body corresponding to the raised ring.

[0007] Preferably: one end of the second explosion-proof sealing ring is fixedly connected to a high-strength connecting ring, and the other end of the high-strength connecting ring is embedded and installed on one end of the sealing ring body.

[0008] Preferably, an air support cavity is provided inside the support ring.

[0009] Preferably, the first explosion-proof sealing ring and the second explosion-proof sealing ring are both made of fluorosilicone rubber material.

[0010] Preferably, the sealing layer is made of PVD fluororubber material.

[0011] It can be seen from the above technical solutions that the embodiments of the utility model have the following advantages:

[0012] The utility model discloses an explosion-proof bidirectional O-type sealing ring. Two V-shaped annular grooves of different diameters are designed and processed at one end of the sealing ring body. Then, the support ring fixed at one end of the second explosion-proof sealing ring is precisely docked and embedded in the groove to ensure that the support ring and the sealing ring body fit tightly to form a stable support structure. An air support cavity is designed on the inner side of the support ring, which can be deformed and buffered appropriately when subjected to pressure, thereby increasing the explosion-proof effect and ensuring that the explosion-proof bidirectional O-type sealing ring can effectively resist the impact of internal and external pressures through the synergy between various components under bidirectional pressure, and has good explosion-proof performance, reduces the risk of leakage, and ensures the safety of equipment and the environment.

[0013] These features and advantages of the present invention will be disclosed in detail in the following specific implementation manners and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings:

[0015] Figure 1 This is a cross-sectional view of the utility model;

[0016] Figure 2 It is an enlarged cross-sectional view of the utility model.

[0017] Explanation of the accompanying drawings: 1. First explosion-proof sealing ring; 2. Sealing ring body; 3. Second explosion-proof sealing ring; 4. V-shaped annular groove; 5. Support ring; 51. Air support cavity; 6. Reinforced structural ring; 7. High-strength connecting ring; 8. Sealing layer. DETAILED DESCRIPTION

[0018] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0019] An explosion-proof bidirectional O-ring according to an embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings.

[0020] Example

[0021] For easier understanding, see Figure 1 to Figure 2The utility model provides an embodiment of an explosion-proof bidirectional O-ring, comprising a sealing ring body 2, a first explosion-proof sealing ring 1 and a second explosion-proof sealing ring 3 which are separately arranged on both sides of the sealing ring body 2, a reinforcing structure ring 6 is arranged inside the first explosion-proof sealing ring 1, one end of the sealing ring body 2 is provided with two V-shaped annular grooves 4 with different diameters, one end of the second explosion-proof sealing ring 3 is fixedly connected with two support rings 5 ​​corresponding to the V-shaped annular grooves 4, and the outer wall of the ring formed by the first explosion-proof sealing ring 1, the sealing ring body 2 and the second explosion-proof sealing ring 3 is provided with a sealing layer 8. In an optional embodiment:

[0022] The first explosion-proof sealing ring 1 and the second explosion-proof sealing ring 3 are both made of fluorosilicone rubber material. An air support cavity 51 is arranged inside the support ring 5. The sealing layer 8 is made of PVD fluororubber material.

[0023] It should be noted that the first explosion-proof sealing ring 1 and the second explosion-proof sealing ring 3 are made of fluorosilicone rubber material through a mold vulcanization process to ensure that they have good high temperature resistance, chemical corrosion resistance and explosion-proof performance. The sealing ring body 2 is also made of fluorosilicone rubber material to ensure overall sealing and compatibility. The reinforcement structure ring 6 preset on the inner side of the first explosion-proof sealing ring 1 is made of metal or other high-strength materials and fixed in the rubber through injection molding or bonding technology to increase its structural stability under high-pressure environment.

[0024] Two V-shaped annular grooves 4 of different diameters are designed and processed at one end of the sealing ring body 2, and then the support ring 5 fixed at one end of the second explosion-proof sealing ring 3 is precisely docked and embedded in the groove to ensure that the support ring and the sealing ring body are tightly fitted to form a stable support structure. An air support cavity 51 is designed on the inner side of the support ring, which can be deformed and buffered appropriately when under pressure to increase the explosion-proof effect. A sealing layer 8 made of PVD fluororubber material is evenly coated on the outer wall of the entire explosion-proof bidirectional O-ring composed of the first explosion-proof sealing ring 1, the sealing ring body 2 and the second explosion-proof sealing ring 3, which is completed by a spraying or dipping process to enhance the wear resistance and chemical corrosion resistance of the sealing ring and further improve the explosion-proof performance.

[0025] In an optional embodiment: a raised ring is provided at one end of the first explosion-proof sealing ring 1 that is in contact with the sealing ring body 2, and a fitting groove is provided at one end of the sealing ring body 2 corresponding to the raised ring.

[0026] It should be noted that the cooperation between the raised ring and the fitting groove is as follows: a raised ring is provided at the end where the first explosion-proof sealing ring 1 contacts the sealing ring body 2, and a fitting groove is provided at the corresponding position of the sealing ring body. When the two are assembled, an interference fit is formed to ensure the fixation and sealing effect of the sealing ring.

[0027] In an optional embodiment: one end of the second explosion-proof sealing ring 3 is fixedly connected to a high-strength connecting ring 7 , and the other end of the high-strength connecting ring 7 is embedded and installed on one end of the sealing ring body 2 .

[0028] It should be noted that one end of the second explosion-proof sealing ring 3 is connected to the sealing ring body 2 via a high-strength connecting ring 7. The connecting ring is made of a strong material to ensure that it does not fall off under extreme pressure, thereby improving the stability of the overall structure.

[0029] Working principle: The sealing ring body 2, the first explosion-proof sealing ring 1 and the second explosion-proof sealing ring 3 together form a complete annular structure. The basic sealing layer 8 covers the outer wall of the ring to provide primary sealing and protection to prevent the external environment from corroding the sealing ring. The reinforcing structure ring 6 set inside the first explosion-proof sealing ring 1 is usually made of metal or other high-strength materials to increase local rigidity, which helps to maintain the stability of the shape of the sealing ring under high-pressure environment and prevent excessive deformation. The V-shaped annular groove 4 on the sealing ring body 2 is combined with the support ring 5 of the second explosion-proof sealing ring 3 to form a dynamically adjustable support structure. The air support cavity 51 on the inner side of the support ring can fine-tune the shape when under pressure, absorb part of the impact force, relieve instantaneous high pressure, prevent the sealing ring from directly bearing excessive pressure peaks, and enhance explosion-proof performance.

[0030] The raised ring and fitting groove design between the first explosion-proof sealing ring 1 and the sealing ring body 2 ensures the close combination between the two parts, improves the tightness of the seal, and prevents high-pressure gas or liquid from leaking between the two parts. The second explosion-proof sealing ring 3 is fixed to the sealing ring body 2 by a high-strength connecting ring 7. This design enhances the physical stability of the overall structure, ensures that the components do not separate under extreme pressure, and maintains the integrity of the seal. The sealing layer 8 is made of PVD fluororubber material, which has excellent chemical resistance, wear resistance and low friction, further improving the durability and explosion resistance of the sealing ring, especially in harsh environments.

[0031] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An explosion-proof bidirectional O-ring, characterized in that: The invention comprises a sealing ring body (2), a first explosion-proof sealing ring (1) and a second explosion-proof sealing ring (3) which are separately arranged on both sides of the sealing ring body (2), wherein a reinforcing structure ring (6) is arranged inside the first explosion-proof sealing ring (1), two V-shaped annular grooves (4) with different diameters are provided at one end of the sealing ring body (2), two supporting rings (5) corresponding to the V-shaped annular grooves (4) are fixedly connected at one end of the second explosion-proof sealing ring (3), and a sealing layer (8) is arranged on the outer wall of the ring formed by the first explosion-proof sealing ring (1), the sealing ring body (2) and the second explosion-proof sealing ring (3).

2. The explosion-proof bidirectional O-ring according to claim 1, characterized in that: One end of the first explosion-proof sealing ring (1) that is in contact with the sealing ring body (2) is provided with a raised ring, and one end of the sealing ring body (2) is provided with a fitting groove corresponding to the raised ring.

3. The explosion-proof bidirectional O-ring according to claim 1, characterized in that: One end of the second explosion-proof sealing ring (3) is fixedly connected to a high-strength connecting ring (7), and the other end of the high-strength connecting ring (7) is embedded and installed on one end of the sealing ring body (2).

4. The explosion-proof bidirectional O-ring according to claim 1, characterized in that: An air support cavity (51) is provided on the inner side of the support ring (5).

5. The explosion-proof bidirectional O-ring according to claim 1, characterized in that: The first explosion-proof sealing ring (1) and the second explosion-proof sealing ring (3) are both made of fluorosilicone rubber material.

6. The explosion-proof bidirectional O-ring according to claim 1, characterized in that: The sealing layer (8) is made of PVD fluororubber material.

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