Structure for installation of liner and valve body for ultra-clean medium working condition

Abstract

The utility model relates to ball valve technical field especially relates to a structure for the installation of super-clean medium working condition lining pipe and valve body. It includes the valve body body that is composed of valve body and bonnet, installs the ball in the valve body body, and places in the valve body body places in the valve seat for fixing ball body respectively at the both ends of ball body, the both ends of valve body body are provided with the passage for the granule flow, still include the lining pipe that places in the passage of valve body body both ends respectively, and one end of lining pipe that sets up respectively at both ends extends to the valve seat position of corresponding one side and forms the close adhesion with the valve seat of corresponding one side, and the lining pipe is installed in the passage of valve body body through the mode of sticking. The utility model has the beneficial effects that: the utility model realizes the efficient application under the super-clean medium working condition through the design and installation technology of optimization lining pipe, and this technology not only simplifies the assembly process, but also improves the sealing performance and structural stability significantly.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a structure for installing a liner and valve body in ultra-clean media conditions. Background Technology

[0002] In modern industry, especially in the silicon chemical industry, ultra-clean media piping systems are widely used to transport high-purity chemicals or gases. These media are extremely sensitive to impurities and contaminants; even minor contamination can lead to decreased product quality, reduced production efficiency, and even serious safety issues. Therefore, the valves and piping systems used in these systems must meet extremely high cleanliness requirements. However, in traditional ball valve designs, the liner connections are often made using welding, a method with numerous drawbacks.

[0003] The prior art, disclosed in patent application CN 221780200 U – a ball valve with a quick coupling, involves welding connections during the installation of ball valves with liner pipes. During welding, residues such as weld slag and oxides may be generated. If not thoroughly cleaned, these residues can mix into the transported medium, compromising its purity. Furthermore, the welded area typically exhibits significant residual stress, which can lead to cracks at the weld joint. Especially under alternating loads, crack propagation can cause pipeline leaks, allowing external contaminants to enter the system or internal media to leak into the external environment, further affecting the medium's purity. Simultaneously, particulate residues can cause valve jamming or sealing failure, severely impacting the system's stability and reliability.

[0004] Therefore, it is necessary to design a structure for the installation of liner and valve body in ultra-clean media conditions to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a structure for installing liner and valve body in ultra-clean media conditions, so as to overcome the above-mentioned shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A structure for installing liner and valve body in ultra-clean media conditions includes a valve body body composed of a valve body and a valve cap, a ball installed in the valve body body, and valve seats placed in the valve body body and respectively placed at both ends of the ball for fixing the ball. The valve body body has channels for particle flow at both ends. The structure is characterized by: liner tubes respectively placed in the channels at both ends of the valve body body, and one end of each liner tube extends to the valve seat position on the corresponding side and forms a tight fit with the valve seat on the corresponding side. The liner tubes are installed in the channels of the valve body body by adhesive bonding.

[0007] Preferably, both the valve body and the valve cap are provided with a set of channels.

[0008] Preferably, an adhesive groove is provided on the outer circumference of the liner, and the adhesive groove does not exceed one-third of the total length of the liner, and the adhesive groove is located at one end near the channel.

[0009] Preferably, the end of the liner that connects to the valve seat does not have an adhesive groove.

[0010] Preferably, the liner has a T-shaped structure with steps for liner installation at the ends of the channels on both sides, and the height of the steps at both ends has a height difference of at least 3mm.

[0011] Preferably, the liner has a T-shaped structure and a step is provided on the end face of the liner.

[0012] Preferably, a disassembly groove is provided on the end face of the valve seat.

[0013] Preferably, the valve seat is also installed in conjunction with a disc spring and a pressure ring.

[0014] The beneficial effects of this utility model are: by optimizing the design and installation process of the liner, this utility model achieves efficient application in ultra-clean media conditions. This process not only simplifies the assembly process, but also significantly improves the sealing performance and structural stability. The valve body / cap and the liner are connected by glue, replacing the traditional welding method. The glue bonding process has the advantages of requiring no professional skills, uniform stress distribution, and no heat-affected zone, making it suitable for mass production. The valve seat structure is designed with a disassembly groove, which provides a tool application point or force support point for secondary disassembly after assembly, so that the valve seat can be easily removed from the connector. Attached Figure Description

[0015] Figure 1 This is a partial sectional view of the structure of the present invention for installing a liner and valve body in ultra-clean media conditions. Figure 2 This is a partial cross-sectional view from a second perspective of the structure for installing a liner and valve body in ultra-clean media conditions according to this utility model. In the diagram: 1. Valve body; 2. Valve seat; 21. Groove; 22. Disc spring; 23. Pressure ring; 24. Sealing ring; 3. Channel; 4. Liner; 41. Glue groove; 42. Step. Detailed Implementation

[0016] Reference Figures 1 to 2A structure for installing a liner and valve body in ultra-clean media conditions includes a valve body body 1 composed of a valve body and a valve cap, a ball installed in the valve body body, and valve seats 2 placed in the valve body body and respectively placed at both ends of the ball for fixing the ball. The valve body 1 has channels 3 at both ends for particle flow, and both the valve body and the valve cap have a set of channels.

[0017] It also includes bushings 4 placed in the channels at both ends of the valve body 1, and one end of each bushing 4 extends to the valve seat 2 on the corresponding side and fits tightly with the valve seat 2 on the corresponding side, thereby ensuring sealing and ensuring that the bushing 4 can guarantee sealing performance after installation.

[0018] The liner 4 has a T-shaped structure and is installed in the channel 3 of the valve body 1 by adhesive bonding. Nano-adhesive is used to connect the liner 4 to the valve body. Compared with existing welding processes, adhesive bonding has the following advantages: no professional skills required: simple operation, suitable for large-scale production; uniform stress distribution: provides a more uniform stress distribution and reduces local stress concentration; no heat-affected zone: will not cause heat-affected zone or deformation to the liner 4 material. In addition, to ensure structural stability, an adhesive groove 41 is provided on the outer circumference of the liner 4, and the adhesive groove 41 does not exceed one-third of the total length of the liner. This helps to maintain the shape after the adhesive cures, enhances the bonding strength between the liner and the valve body and valve cap, and improves the overall structural stability. It can precisely control the distribution and amount of adhesive, avoid the problem of uneven adhesive when applying it directly to the outer circumference, and prevent adhesive from being squeezed into the valve cavity and contaminating the pipeline medium. At the same time, to prevent the risk of the liner 4 rupturing due to pressure difference and thus contaminating the pipeline medium, a relative position area with a width of 20~30mm is left un-applied during the adhesive application process (i.e., the position on the liner where the adhesive groove 41 is not opened). This measure allows a stable constant pressure environment to be formed between the liner 4 and the valve body / valve cap and between the valve cavity.

[0019] The specific glue groove 41 is set at one end near the channel to facilitate direct connection with the inner wall channel 3 of the valve body / valve screw. The extension end of the liner 4 (i.e. the end connected to the valve seat) is not provided with glue groove 41.

[0020] To prevent misassembly during the installation of the liner 4, the height difference of the T-shaped step at both ends of the valve body / valve cap is designed to be at least 3mm. This improves the first-time assembly pass rate through structural error prevention. For example, a 3mm step is set on one side of the valve body and a 6mm step is set on the other side of the valve cap. In addition, the step 42 provided in the liner 4 allows the flange end face to further press against the liner end face during valve use when the flange end face mates with the corresponding valve body end face for installation, ensuring a tight connection between the valve body / cap and the liner and further improving the connection strength.

[0021] To facilitate the installation of the liner 4, a positioning step is provided on the outer diameter of the valve body or valve screw channel to ensure that the liner 4 is accurately aligned with the ball flow channel during installation. This prevents the liner 4 from loosening or falling off during use due to excessive insertion or improper installation, which could lead to the risk of pipeline media contamination.

[0022] To facilitate the disassembly of valve seat 2, a disassembly groove 21 is provided on the end face of valve seat 2. This groove 21 provides a tool application point or force support point for secondary disassembly after assembly, making it easier for valve seat 2 to be smoothly removed from the connector. In traditional structures, due to tight sealing or high material fit after assembly, valve seat 2 is often difficult to disassemble without damage, which can easily cause component damage or introduce impurities that contaminate the system medium. This design effectively solves the problem of difficult valve seat 2 disassembly by setting a groove 21 with a reasonable position and size, improving maintenance efficiency and component reusability.

[0023] In addition, in order to further install the valve seat 2 and to cooperate with the installation of the liner 4, the valve seat 2 is also installed by means of a disc spring 22 and a pressure ring 23; To ensure a tight seal, a sealing ring 24 is provided on the outer ring of the valve seat to prevent substances from entering the outside of the valve seat 2 through gaps.

[0024] The advantages of this utility model are that it achieves efficient application in ultra-clean media conditions by optimizing the design and installation process of the liner. This process not only simplifies the assembly process, but also significantly improves the sealing performance and structural stability. The valve body / cap and the liner are connected by glue, replacing the traditional welding method. The glue bonding process has the advantages of requiring no professional skills, uniform stress distribution, and no heat-affected zone, making it suitable for mass production. The valve seat structure is designed with a disassembly groove, which provides a tool application point or force support point for secondary disassembly after assembly, so that the valve seat can be easily removed from the connector.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A structure for installing a liner and valve body in ultra-clean media conditions, comprising a valve body body consisting of a valve body and a valve cap, a ball installed within the valve body body, and valve seats disposed within the valve body body and respectively positioned at both ends of the ball for fixing the ball, wherein the valve body body has channels for particle flow at both ends, characterized in that: It also includes liner tubes placed in the channels at both ends of the valve body, and one end of each liner tube extends to the valve seat position on the corresponding side and fits tightly with the valve seat on the corresponding side. The liner tubes are installed in the channels of the valve body by adhesive.

2. The structure for installing a liner and valve body in ultra-clean media conditions according to claim 1, characterized in that: Both the valve body and the valve cap are provided with a set of channels.

3. The structure for installing a liner and valve body in ultra-clean media conditions according to claim 1, characterized in that: An adhesive groove is provided on the outer circumference of the liner, and the adhesive groove does not exceed one-third of the total length of the liner. The adhesive groove is located at one end near the channel.

4. The structure for installing a liner and valve body in ultra-clean media conditions according to claim 1, characterized in that: No glue groove is provided at the end where the liner connects to the valve seat.

5. The structure for installing a liner and valve body in ultra-clean media conditions according to claim 1, characterized in that: The liner has a T-shaped structure with steps for liner installation at the ends of the channels on both sides, and the height of the steps at both ends has a height difference of at least 3mm.

6. The structure for installing a liner and valve body in ultra-clean media conditions according to claim 5, characterized in that: The liner has a T-shaped structure and a step is provided on the end face of the liner.

7. The structure for installing a liner and valve body in ultra-clean media conditions according to claim 1, characterized in that: A disassembly groove is provided on the end face of the valve seat.

8. The structure for installing a liner and valve body in ultra-clean media conditions according to claim 1, characterized in that: The valve seat is also installed using a disc spring and a pressure ring.

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