A double seal valve interface structure

Abstract

The embodiment of the present specification provides a double sealing valve interface structure, comprising: a valve body, the first side of the valve body is provided with a valve body interface; a connecting pipe, the connecting pipe comprises an integral straight pipe section, an expansion section and a connecting section, the connecting section is at least partially sleeved on the valve body interface; a sealing part, the sealing part comprises an integral mounting section, a first sealing section and a second sealing section, the mounting section extends in the direction close to the connecting section to form the first sealing section, the first sealing section is at least partially in close contact with the connecting section, the first sealing section extends in the direction close to the expansion section to form the second sealing section, and the second sealing section is at least partially in close contact with the expansion section. The mounting section is used for connecting the sealing part and the valve body, the first sealing section and the second sealing section realize double sealing between the connecting pipe and the valve body, the uniform distribution of the fastening force of the valve body interface in the fluid direction is ensured, and the sealing performance and pressure resistance stability of the valve body interface are significantly improved.

Description

Technical Field

[0001] This specification relates to the field of valve interface technology, specifically to a double-sealed valve interface structure. Background Technology

[0002] Currently, common valve connection methods include flange connections, wafer connections, butt weld connections, and threaded connections. Threaded connections are a simple method often used for small valves. Threaded connections typically involve machining the valve's inlet and outlet ends into tapered or straight pipe threads, allowing connection to tapered pipe thread fittings or pipelines. However, the sealing performance and pressure resistance stability of threaded valve connections are generally poor, leading to a higher likelihood of leakage. Summary of the Invention

[0003] In view of this, the embodiments of this specification provide a double-sealed valve interface structure, which connects the sealing part and the valve body through the installation section. The first sealing section and the second sealing section realize double sealing between the connecting pipe and the valve body, which can ensure that the fastening force of the valve body interface is evenly distributed in the fluid direction, thereby significantly improving the sealing performance and pressure resistance stability of the valve body interface.

[0004] This specification provides the following technical solution in its embodiments: a double-sealed valve interface structure, comprising:

[0005] Valve body, wherein a valve body interface is provided on the first side of the valve body;

[0006] The connecting pipe includes an integrally formed straight pipe section, an expansion section, and a connecting section. The end of the straight pipe section near the valve body expands to form a connecting section that mates with the valve body interface. The connecting section is at least partially sleeved on the valve body interface.

[0007] The sealing part includes an integrally formed mounting section, a first sealing section, and a second sealing section. The mounting section is mounted on the outside of the valve body. The mounting section extends toward the connecting section to form the first sealing section, which is in close contact with the connecting section at least partially. The first sealing section extends toward the expansion section to form the second sealing section, which is in close contact with the expansion section at least partially.

[0008] Preferably, the first sealing section has an inclined surface on the side near the connecting section, and along the direction near the valve body, the inclined surface gradually approaches the connecting section until the inclined surface is in close contact with the outer surface of the connecting section.

[0009] Preferably, the connecting section is a straight pipe, and the valve body interface extends outward along the connecting section until it contacts the expansion section.

[0010] Preferably, the second sealing section extends toward the expansion section to form an annular protrusion, the annular protrusion being in close contact with at least a portion of the outer surface of the expansion section.

[0011] Preferably, the outer surface of the expansion section has a fitting portion that mates with the annular protrusion, and the annular protrusion and the outer surface of the fitting portion are in close contact.

[0012] Preferably, the sealing part is integrally formed of stainless steel.

[0013] Preferably, the mounting section is detachably and fixedly connected to the valve body.

[0014] Preferably, the valve body has a protrusion with an external thread, and the mounting section has an internal thread that mates with the external thread.

[0015] Preferably, the connecting pipe is a PFA pipe.

[0016] Compared with the prior art, the beneficial effects that at least one technical solution adopted in the embodiments of this specification can achieve include at least:

[0017] The connecting pipe consists of a straight section, an expansion section, and a connecting section. The connecting section mates with the valve body interface to connect the connecting pipe to the valve body. Meanwhile, the sealing part consists of an integrally formed installation section, a first sealing section, and a second sealing section. The installation section connects the sealing part to the valve body, and the first and second sealing sections provide a double seal between the connecting pipe and the valve body. This ensures a uniform distribution of the tightening force at the valve body interface in the fluid direction, significantly improving the sealing performance and pressure resistance stability of the valve body interface. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the double-sealed valve interface structure provided in this application.

[0020] In the diagram, 1 is the valve body; 11 is the valve body interface; 2 is the connecting pipe; 21 is the straight pipe section; 22 is the expansion section; 23 is the connecting section; 3 is the sealing part; 31 is the installation section; 32 is the first sealing section; and 33 is the second sealing section. Detailed Implementation

[0021] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0022] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are merely a partial embodiment of this application, not the entire embodiment. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0024] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0025] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0026] Currently, the sealing performance and pressure resistance stability of valve interfaces using threaded connections are generally poor, making them prone to leakage.

[0027] After extensive and in-depth experimentation, the inventors designed a double-sealed valve interface structure.

[0028] The technical problem solved by this invention is: how to improve the sealing performance and pressure resistance stability of valve interfaces.

[0029] More specifically, the solution adopted in this invention includes: a connecting pipe consisting of a straight pipe section, an expansion section, and a connecting section; the connecting section cooperates with the valve body interface to achieve the connection between the connecting pipe and the valve body; and a sealing part consisting of an integrally formed mounting section, a first sealing section, and a second sealing section; the mounting section connects the sealing part and the valve body; and the first and second sealing sections achieve a double seal between the connecting pipe and the valve body, which can ensure that the tightening force of the valve body interface is evenly distributed in the fluid direction, thereby significantly improving the sealing performance and pressure resistance stability of the valve body interface.

[0030] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0031] like Figure 1 As shown, a double-sealed valve interface structure includes:

[0032] Valve body 1, wherein a valve body interface 11 is provided on the first side of the valve body 1;

[0033] The connecting pipe 2 includes an integrally formed straight pipe section 21, an expansion section 22, and a connecting section 23. The end of the straight pipe section 21 near the valve body 1 expands to form a connecting section 23 that mates with the valve body interface 11. The connecting section 23 is at least partially sleeved on the valve body interface 11, and the inner wall of the connecting section 23 is in contact with the outer wall of the valve body interface 11. The expansion section 22 is used to connect the straight pipe section 21 and the connecting section 23.

[0034] The sealing part 3 includes an integrally formed mounting section 31, a first sealing section 32, and a second sealing section 33. The mounting section 31 is mounted on the outside of the valve body 1. The mounting section 31 extends toward the connecting section 23 to form the first sealing section 32. The first sealing section 32 is in close contact with the connecting section 23 at least partially. The first sealing section 32 extends toward the expansion section 22 to form the second sealing section 33. The second sealing section 33 is in close contact with the expansion section 22 at least partially.

[0035] When the connecting pipe 2 is connected to the valve body 1, the connecting section 23 is fitted onto the valve body interface 11, the inner wall of the expansion section 22 contacts the end of the valve body interface 11, and the mounting section 31 of the sealing part 3 is fitted to the valve body 1. The inner wall of the first sealing section 32 is in close contact with the outer wall of the connecting section 23, and the inner wall of the second sealing section 33 is in close contact with the outer wall of the expansion section 22, achieving double sealing, effectively preventing fluid leakage and seepage, ensuring reliable operation of the system, and ensuring that the tightening force of the valve body interface 11 is evenly distributed in the fluid direction, so that the valve body interface 11 has excellent pressure resistance and can maintain a stable sealing effect under high pressure environment, effectively avoiding the risk of system pressure leakage.

[0036] It should be noted that the specific connection operation between the connecting pipe 2 and the valve body 1 is as follows: cut the connecting pipe 2 flat, heat it to 320° with an external heating source (heat gun), rotate it while expanding the hole to ensure even heating, insert the connecting pipe 2 into the expanding fixture as soon as possible, wait for it to cool down and then take it out to form the expanding section 22 and the connecting section 23. Then install the connecting section 23 onto the valve body interface 11, and achieve a double sealing result through the sealing part 3, which is easy to lock and has low pressure loss.

[0037] like Figure 1 As shown, in some embodiments, the first sealing section 32 has an inclined surface on the side near the connecting section 23. Along the direction near the valve body 1, the inclined surface gradually approaches the connecting section 23 until the inclined surface is in close contact with the outer surface of the connecting section 23. By setting the inner side of the first sealing section 32 as an inclined surface, and along the direction from the connecting pipe 2 to the valve body 1, the direction of the inclined surface gradually approaches the connecting section 23 until the inclined surface is in close contact with the outer surface of the connecting section 23, a first sealing is achieved.

[0038] It should be noted that the inner side of the first sealing section 32 is inclined to optimize the sealing angle, ensure the sealing effect, and at the same time ensure that the fastening force at the valve body interface 11 is evenly distributed.

[0039] like Figure 1 As shown, in some embodiments, the connecting section 23 is a straight pipe, and the valve body interface 11 extends outward along the connecting section 23 until it contacts the expansion section 22. The connecting section 23 is a straight pipe, which facilitates the mutual connection between the connecting section 23 and the valve body interface 11. The valve body interface 11 can be inserted along the inside of the connecting section 23 until it contacts the expansion section 22, ensuring the connection effect between the connecting pipe 2 and the valve body 1.

[0040] like Figure 1 As shown, in some embodiments, the second sealing section 33 extends toward the expansion section 22 to form an annular protrusion, the annular protrusion being in close contact with at least part of the outer surface of the expansion section 22, and the interior of the second sealing section 33 extending to form an annular protrusion, which can fit against the outer wall of the expansion section 22 to ensure a second sealing effect.

[0041] like Figure 1 As shown, in some embodiments, the outer surface of the expansion section 22 is formed with a fitting portion that mates with the annular protrusion. The annular protrusion and the outer surface of the fitting portion are in close contact. Since the inner diameter of the connecting section 23 is larger than the inner diameter of the straight pipe section 21, the outer wall of the expansion section 22 must gradually expand outward. The annular protrusion fits into the fitting portion on the outer surface of the expansion section 22 to ensure a sealing effect.

[0042] It should be noted that by adopting the above structure for double sealing, and by optimizing the structure and design of the sealing angle, it is possible to ensure that the tightening force of the valve body interface 11 is evenly distributed in the fluid direction, so that the valve body interface 11 has a tighter connection with the contact point of the connecting pipe 2. At the same time, it enables the valve body interface 11 to have excellent pressure resistance, maintain a stable sealing effect under high pressure environment, and effectively avoid the risk of system pressure leakage.

[0043] In some embodiments, the sealing part 3 is integrally formed of stainless steel. Integrating the sealing part 3 with stainless steel can ensure the service life of the sealing part 3 and increase the rigidity of the sealing part 3.

[0044] like Figure 1 As shown, in some embodiments, the mounting section 31 is detachably and fixedly connected to the valve body 1. The mounting section 31 and the valve body 1 are connected by a detachable and fixed connection, which makes the assembly and disassembly of the sealing part 3 and the valve body 1 more convenient.

[0045] Furthermore, a protrusion is formed on the valve body 1, and an external thread is provided on the protrusion. An internal thread that mates with the external thread is provided on the mounting section 31. By providing an external thread on the protrusion and an internal thread on the mounting section 31, the sealing part 3 and the valve body 1 are connected by a thread, which simplifies the assembly and disassembly process of the interface, improves the user experience, and reduces the possibility of operational errors.

[0046] In some embodiments, the connecting pipe 2 is a PFA pipe. Using a PFA pipe as the connecting pipe 2 provides good corrosion resistance, high temperature resistance, pressure resistance, and wear resistance.

[0047] In summary, this application has at least the following effects:

[0048] 1. High-efficiency sealing: Due to the optimized double fastening structure design, the valve body interface 11 can achieve excellent sealing performance, effectively preventing fluid leakage and seepage, and ensuring reliable system operation.

[0049] 2. Pressure resistance: The optimized structure gives the valve body interface 11 excellent pressure resistance, which can maintain a stable sealing effect under high pressure environment and effectively avoid the risk of system pressure leakage.

[0050] 3. Ease of operation: The connection between the sealing part 3 and the valve body 1 is achieved through a threaded structure, which simplifies the assembly and disassembly process of the interface, improves the user experience, and reduces the possibility of operational errors.

[0051] The various embodiments in this specification are interchangeable, and similar sections can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the method embodiments described later are relatively simple in description since they correspond to the system; relevant sections can be referred to the section descriptions of the system embodiments.

[0052] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A double-sealed valve interface structure, characterized in that, include: Valve body, wherein a valve body interface is provided on the first side of the valve body; The connecting pipe includes an integrally formed straight pipe section, an expansion section, and a connecting section. The end of the straight pipe section near the valve body expands to form a connecting section that mates with the valve body interface. The connecting section is at least partially sleeved on the valve body interface. The sealing part includes an integrally formed mounting section, a first sealing section and a second sealing section. The mounting section is mounted on the outside of the valve body. The mounting section extends toward the connecting section to form the first sealing section. The first sealing section is in close contact with the connecting section at least in part. The first sealing section extends toward the expansion section to form the second sealing section. The second sealing section is in close contact with the expansion section at least in part. The first sealing section has an inclined surface on the side near the connecting section. Along the direction near the valve body, the inclined surface gradually approaches the connecting section until the inclined surface is in close contact with the outer surface of the connecting section. The connecting section is a straight pipe, and the valve body interface extends outward along the connecting section until it contacts the expansion section.

2. The double-sealed valve interface structure according to claim 1, characterized in that, The second sealing section extends toward the expansion section to form an annular protrusion, which is at least partially in close contact with the outer surface of the expansion section.

3. The double-sealed valve interface structure according to claim 2, characterized in that, The outer surface of the expansion section has a fitting portion that mates with the annular protrusion, and the annular protrusion and the outer surface of the fitting portion are in close contact.

4. The double-sealed valve interface structure according to claim 1, characterized in that, The sealing part is integrally formed from stainless steel.

5. The double-sealed valve interface structure according to any one of claims 1-4, characterized in that, The mounting section is detachably and fixedly connected to the valve body.

6. The double-sealed valve interface structure according to claim 5, characterized in that, The valve body has a protrusion with an external thread, and the mounting section has an internal thread that mates with the external thread.

7. The double-sealed valve interface structure according to claim 1, characterized in that, The connecting pipe is a PFA pipe.

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