Air control two-position two-way electromagnetic valve sealing structure

Abstract

The utility model belongs to the technical field of valve body sealing, and discloses a pneumatic control two-position two-way electromagnetic valve sealing structure which comprises a pressing ring and a valve seat and further comprises a first fixing plate and a first sealing ring, the first fixing plate is installed at the end, close to the pressing ring, of the valve seat, and the side edge of the first fixing plate is matched with the side edge of the valve seat to form a first sealing cone frustum. A conical sealing groove is formed in the end, close to the first fixing plate, of the pressing ring, and the inner wall of the conical sealing groove is matched and attached to the side wall of the first sealing cone frustum. The edge of one end of the valve seat is matched with the edge of the end, close to the valve seat, of the first fixing plate to form a first annular installation groove, the first sealing ring is installed in the first annular installation groove, and the outer side of the first sealing ring extends out of the first annular installation groove and abuts against the middle of the conical sealing groove. The sealing device is good in sealing performance, easy to install and low in cost.

Description

Technical Field

[0001] This utility model belongs to the field of valve body sealing technology, specifically relating to a sealing structure for a pneumatically controlled two-position two-way solenoid valve. Background Technology

[0002] Currently, valve sealing typically achieves a seal by vertically pressing a gasket against a crater. However, this structure is prone to causing impurities to accumulate on the sealing surface when handling media containing impurities or particles, thus affecting sealing performance. Over long-term use, the sealing surface may wear due to vertical movement, leading to leakage. Furthermore, this sealing method has high installation requirements and is prone to deviations, resulting in uneven stress on the sealing element and potentially causing seal failure. Therefore, it is necessary to improve the existing technology to address these issues. Utility Model Content

[0003] The purpose of this invention is to provide a sealing structure for a pneumatically controlled two-position two-way solenoid valve to solve the aforementioned problems in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A sealing structure for a pneumatically controlled two-position two-way solenoid valve includes a pressure ring and a valve seat for sealing cooperation in the solenoid valve, and also includes a first fixing plate and a first sealing ring. The first fixing plate is installed on the end of the valve seat near the pressure ring, and the side of the first fixing plate and the side of the valve seat cooperate to form a first sealing truncated cone. A conical sealing groove is opened on the end of the pressure ring near the first fixing plate, and the inner wall of the conical sealing groove matches and fits against the side wall of the first sealing truncated cone. The edge of one end of the valve seat cooperates with the edge of the first fixing plate near the valve seat to form a first annular mounting groove. The first sealing ring is installed in the first annular mounting groove, and the outer side of the first sealing ring extends to the outside of the first annular mounting groove and abuts against the middle of the conical sealing groove.

[0006] As a preferred technical solution of this utility model, the opening of the first annular mounting groove is an arc-shaped constriction structure that bends towards the center, and the width of the opening of the first annular mounting groove is smaller than the diameter of the first sealing ring in its natural state.

[0007] In a preferred embodiment of this invention, the middle part of the first fixing plate is connected to the valve seat by bolts.

[0008] As a preferred technical solution of this utility model, the first sealing ring is made of ordinary rubber, fluororubber, silicone or PTFE material.

[0009] As a preferred technical solution of this utility model, a limiting boss is provided in the middle of one end of the valve seat, and a limiting groove is provided in the middle of one end of the first fixing plate, with the limiting boss and the limiting groove being provided correspondingly.

[0010] As a preferred technical solution of this utility model, the air-controlled two-position two-way solenoid valve sealing structure further includes a second fixing plate and a second sealing ring. The second fixing plate is installed at the other end of the first fixing plate. The side of the second fixing plate cooperates with the side wall of the first sealing cone to form a second sealing cone. The side wall of the second sealing cone matches and fits with the inner wall of the conical sealing groove. The edge of the other end of the first fixing plate cooperates with the edge of the second fixing plate near the end of the first fixing plate to form a second annular mounting groove. The second sealing ring is installed in the second annular mounting groove. The outer side of the second sealing ring extends to the outside of the second annular mounting groove and abuts against the middle of the conical sealing groove.

[0011] As a preferred technical solution of this utility model, the opening of the second annular mounting groove is an arc-shaped constriction structure that bends towards the center, and the width of the opening of the first annular mounting groove is smaller than the diameter of the second sealing ring in its natural state.

[0012] In a preferred embodiment of this invention, the hardness of the second sealing ring is greater than that of the first sealing ring.

[0013] As a preferred technical solution of this utility model, the second sealing ring is made of ordinary rubber, fluororubber, silicone or PTFE material.

[0014] In a preferred embodiment of this invention, the middle part of the second fixing plate is connected to the first fixing plate and the valve seat by bolts.

[0015] Beneficial effects: This invention utilizes the cooperation between a first sealing cone and a conical sealing groove for sealing, which can minimize the accumulation of impurities on the sealing surface and thus affect sealing performance. The first sealing ring abuts against the center of the conical sealing groove, resulting in more uniform compression of the first sealing ring and avoiding sealing failure caused by localized stress concentration. This improves sealing reliability. Simultaneously, uniform compression reduces wear on the first sealing ring, extending its service life and improving the durability of the entire sealing system. During long-term use, it maintains good sealing performance and reduces the frequency of maintenance and seal replacement.

[0016] In this invention, during the sealing process, as the pressure of the sealing medium increases, the pressure on the valve core also increases. The valve core then compresses the pressure ring, increasing the contact pressure between the inclined surfaces and thus enhancing the sealing effect. This self-sealing mechanism effectively prevents media leakage, making it particularly suitable for high-pressure environments.

[0017] In large sealed valves, bevel seals typically do not require special materials (such as the graphite sealing packing and thin metal plate used on the valve plate in butterfly valves, where graphite is responsible for the contact surface sealing and the thin metal plate acts as an elastic element on the valve plate, providing sealing elasticity for compensation) or complex processing techniques, thus resulting in relatively low manufacturing costs. Furthermore, their ease of installation and maintenance also reduces overall operating costs.

[0018] Angled surface seals, through their structural characteristics and sealing principle, can maintain stable sealing performance under various operating conditions by varying the material of the first sealing ring (e.g., for non-oil media, the first sealing ring can be fluororubber, silicone, or ordinary rubber; for acidic or alkaline media, a PTFE sealing ring can be used; for food-grade requirements, silicone can be used directly). During long-term use, seal failure is less likely to occur, improving the reliability and stability of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the application of the air-controlled two-position two-way solenoid valve sealing structure in Example 1 within the solenoid valve.

[0020] Figure 2 This is a schematic diagram of the pressure ring in the open state in Example 2;

[0021] Figure 3 This is a schematic diagram of the pressure ring in the closed state in Example 2.

[0022] In the diagram: 1-Pressure ring; 2-Valve seat; 3-First fixing plate; 4-First sealing ring; 5-Second fixing plate; 6-Second sealing ring. Detailed Implementation

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model. Example

[0024] like Figure 1As shown, this embodiment provides a sealing structure for a pneumatically controlled two-position two-way solenoid valve, including a pressure ring 1 and a valve seat 2 for sealing cooperation within the solenoid valve. The installation method of both remains unchanged within the solenoid valve. The valve seat 2 is installed on the valve body, and the pressure ring 1 cooperates with the valve core. Under the action of the valve core, the pressure ring 1 moves closer to or further away from the valve seat 2, realizing the opening and closing of the solenoid valve. Based on this, the sealing structure of this pneumatically controlled two-position two-way solenoid valve also includes a first fixing plate 3 and a first sealing ring 4. The first fixing plate 3 is installed at the end of the valve seat 2 near the pressure ring 1, and can cooperate with the valve seat 2 to seal together with the pressure ring 1. The side of the first fixing plate 3 cooperates with the side of the valve seat 2 to form a first sealing cone. A conical sealing groove is opened at the end of the pressure ring 1 near the first fixing plate 3. The inner wall of the conical sealing groove matches and fits the side wall of the first sealing cone. When the pressure ring 1 moves, the cooperation between the conical sealing groove and the first sealing cone forms an oblique angle. The surface seal, when compressed, can form an automatic guiding function. It can automatically align and seal even when tilted in any direction. Therefore, it does not need to consider the precision issues as much as existing technologies, making the overall installation simpler. Generally, it is only necessary to correctly align the sealing component with the inclined surface and apply a certain pre-tightening force to complete the installation. It does not require a complex connection structure, making it easier to disassemble and maintain. The edge of one end of the valve seat 2 and the edge of the first fixing plate 3 near the valve seat 2 form a first annular mounting groove. The first sealing ring 4 is installed in the first annular mounting groove to ensure the stability of the first sealing ring 4. The outer side of the first sealing ring 4 extends to the outside of the first annular mounting groove and abuts against the middle of the conical sealing groove. That is, when the inner wall of the conical sealing groove at one end of the pressure ring 1 abuts against the outer wall of the first sealing cone, the first sealing ring 4 can be further compressed, thereby further improving the sealing performance.

[0025] This invention utilizes a first sealing cone truncated cone and a conical sealing groove for sealing, which minimizes the accumulation of impurities on the sealing surface and thus reduces the impact on sealing performance. The first sealing ring 4 abuts against the center of the conical sealing groove, resulting in more uniform compression of the first sealing ring 4. This avoids sealing failure caused by localized stress concentration, thereby improving sealing reliability. Simultaneously, uniform compression reduces wear on the first sealing ring 4, extending its service life and improving the overall durability of the sealing system. During long-term use, it maintains good sealing performance and reduces the frequency of maintenance and seal replacement.

[0026] In this invention, during the sealing process, as the pressure of the sealing medium increases, the pressure on the valve core also increases. The valve core then compresses the pressure ring 1, increasing the contact pressure between the inclined surfaces and thus enhancing the sealing effect. This self-sealing mechanism effectively prevents medium leakage, making it particularly suitable for high-pressure environments.

[0027] In large sealed valves, bevel seals typically do not require special materials (such as the graphite sealing packing and thin metal plate used on the valve plate in butterfly valves, where graphite is responsible for the contact surface sealing and the thin metal plate acts as an elastic element on the valve plate, providing sealing elasticity for compensation) or complex processing techniques, thus resulting in relatively low manufacturing costs. Furthermore, their ease of installation and maintenance also reduces overall operating costs.

[0028] The beveled seal, through its structural characteristics and sealing principle, maintains stable sealing performance under various operating conditions by varying the material of the first sealing ring (e.g., for non-oil media, the first sealing ring can be made of fluororubber, silicone, or ordinary rubber; for acidic or alkaline media, a PTFE sealing ring can be used; for food-grade requirements, silicone can be used directly). During long-term use, seal failure is less likely, improving the reliability and stability of the equipment.

[0029] As a preferred embodiment of this example, it should be further explained that the opening of the first annular mounting groove is an arc-shaped constriction structure that bends towards the center, and the width of the opening of the first annular mounting groove is smaller than the diameter of the first sealing ring 4 in its natural state, so as to ensure the stability of the first sealing ring 4, while not affecting the fact that a part of the first sealing ring 4 extends to the outside and cooperates with the pressure ring 1 for sealing.

[0030] As a preferred embodiment of this invention, it should be further noted that the middle part of the first fixing plate 3 is connected to the valve seat 2 by bolts, which is simple and stable.

[0031] As a preferred embodiment of this invention, it should be further explained that a limiting boss is provided at the middle of one end of the valve seat 2, and a limiting groove is provided at the middle of one end of the first fixing plate 3. The limiting boss and the limiting groove are correspondingly provided, which allows for simple positioning of the first fixing plate during installation, making the installation of the first fixing plate 3 easier. Example

[0032] This embodiment is a further improvement based on Embodiment 1. The specific differences between this embodiment and Embodiment 1 are as follows:

[0033] As a preferred embodiment of this utility model, it should be further noted that, in practice, the number of sealing rings can be adjusted according to different working conditions, such as... Figure 2 and Figure 3As shown, the sealing structure of the pneumatically controlled two-position two-way solenoid valve also includes a second fixing plate 5 and a second sealing ring 6. The second fixing plate 5 is installed at the other end of the first fixing plate 3. The side of the second fixing plate 5 cooperates with the side wall of the first sealing cone to form a second sealing cone. The side wall of the second sealing cone matches and fits with the inner wall of the conical sealing groove to further enhance the sealing effect. The edge of the other end of the first fixing plate 3 cooperates with the edge of the second fixing plate 5 near the end of the first fixing plate 3 to form a second annular mounting groove. The second sealing ring 6 is installed in the second annular mounting groove to ensure the stability of the second sealing ring 6. The outer side of the second sealing ring 6 extends to the outside of the second annular mounting groove and abuts against the middle of the conical sealing groove. The sealing effect can be further enhanced by the two sealing rings. Based on this embodiment, sealing rings can be added again using the same method. During use, multiple sealing rings can be made of different hardnesses to increase the reliability of the seal. Specifically, various materials can be used. For example, the sealing ring closest to the pressure ring can be made of a better or harder material, and then sealing rings of other materials can be added later to cope with various valve structures such as large valves and improve the practicality of this structure.

[0034] As a preferred embodiment of this example, it should be further explained that the opening of the second annular mounting groove is an arc-shaped constriction structure that bends towards the center, and the width of the opening of the first annular mounting groove is smaller than the diameter of the second sealing ring 6 in its natural state, ensuring the stability of the second sealing ring 6, while also not affecting the fact that a portion of the second sealing ring 6 extends to the outside and cooperates with the pressure ring 1 for sealing.

[0035] As a preferred embodiment of this invention, it should be further noted that the hardness of the second sealing ring 6 is greater than that of the first sealing ring 4, which reduces the wear of the second sealing ring 6, thereby increasing its service life and reducing costs.

[0036] As a preferred embodiment of this invention, it should be further noted that the second sealing ring 6 is made of ordinary rubber, fluororubber, silicone or PTFE material, and different materials can be selected according to different working conditions.

[0037] As a preferred embodiment of this invention, it should be further noted that the middle part of the second fixing plate 5 is connected to the first fixing plate 3 and the valve seat 2 by bolts, and the connection is simple and stable.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A sealing structure for a pneumatically controlled two-position two-way solenoid valve, comprising a pressure ring (1) and a valve seat (2) for sealing cooperation in the solenoid valve, characterized in that, It also includes a first fixing plate (3) and a first sealing ring (4). The first fixing plate (3) is installed on the valve seat (2) near the pressure ring (1), and the side of the first fixing plate (3) and the side of the valve seat (2) cooperate to form a first sealing cone. A conical sealing groove is opened on the end of the pressure ring (1) near the first fixing plate (3). The inner wall of the conical sealing groove matches and fits the side wall of the first sealing cone. The edge of one end of the valve seat (2) and the edge of the first fixing plate (3) near the valve seat (2) cooperate to form a first annular mounting groove. The first sealing ring (4) is installed in the first annular mounting groove. The outer side of the first sealing ring (4) extends to the outside of the first annular mounting groove and abuts against the middle of the conical sealing groove.

2. The sealing structure of a pneumatically controlled two-position two-way solenoid valve according to claim 1, characterized in that, The opening of the first annular mounting groove is an arc-shaped constriction structure that bends toward the center, and the width of the opening of the first annular mounting groove is smaller than the diameter of the first sealing ring (4) in its natural state.

3. The sealing structure of a pneumatically controlled two-position two-way solenoid valve according to claim 1 or 2, characterized in that, The middle part of the first fixing plate (3) is connected to the valve seat (2) by bolts.

4. The sealing structure of a pneumatically controlled two-position two-way solenoid valve according to claim 1 or 2, characterized in that, The first sealing ring (4) is made of ordinary rubber, fluororubber, silicone or PTFE material.

5. The sealing structure of a pneumatically controlled two-position two-way solenoid valve according to claim 1 or 2, characterized in that, A limiting boss is provided at the middle of one end of the valve seat (2), and a limiting groove is provided at the middle of one end of the first fixing plate (3). The limiting boss and the limiting groove are correspondingly provided.

6. The sealing structure of a pneumatically controlled two-position two-way solenoid valve according to claim 1, characterized in that, The air-controlled two-position two-way solenoid valve sealing structure further includes a second fixing plate (5) and a second sealing ring (6). The second fixing plate (5) is installed at the other end of the first fixing plate (3). The side of the second fixing plate (5) cooperates with the side wall of the first sealing cone to form a second sealing cone. The side wall of the second sealing cone matches and fits with the inner wall of the conical sealing groove. The edge of the other end of the first fixing plate (3) cooperates with the edge of the second fixing plate (5) near the end of the first fixing plate (3) to form a second annular mounting groove. The second sealing ring (6) is installed in the second annular mounting groove. The outer side of the second sealing ring (6) extends to the outside of the second annular mounting groove and abuts against the middle of the conical sealing groove.

7. The sealing structure of a pneumatically controlled two-position two-way solenoid valve according to claim 6, characterized in that, The opening of the second annular mounting groove is an arc-shaped constriction structure that bends towards the center, and the width of the opening of the first annular mounting groove is smaller than the diameter of the second sealing ring (6) in its natural state.

8. The sealing structure of a pneumatically controlled two-position two-way solenoid valve according to claim 7, characterized in that, The hardness of the second sealing ring (6) is greater than that of the first sealing ring (4).

9. A sealing structure for a pneumatically controlled two-position two-way solenoid valve according to any one of claims 6-8, characterized in that, The second sealing ring (6) is made of ordinary rubber, fluororubber, silicone or PTFE material.

10. A sealing structure for a pneumatically controlled two-position two-way solenoid valve according to any one of claims 6-8, characterized in that, The middle part of the second fixing plate (5) is connected to the first fixing plate (3) and the valve seat (2) by bolts.

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