Ultra-large-diameter fixed ball fluorine-lined ball valve

Abstract

The utility model relates to the technical field of valves, in particular to an ultra-large-diameter fixed ball fluorine lining ball valve which comprises a middle valve body, a left valve body is fixedly installed on the left side of the middle valve body, a right valve body is fixedly installed on the right side of the middle valve body, and a fixed ball support is fixedly installed at the bottom of the middle valve body in a penetrating mode. And a fixing shaft is rotationally installed at the upper end of the fixing ball support, a fixing ball is fixedly installed at the upper end of the fixing shaft, a handle rod penetrating through the middle valve body is fixedly installed at the top of the fixing ball, and the upper end of the connecting shaft penetrates through the supporting frame and is fixedly connected with a turbine head. According to the utility model, the fixed ball is arranged and acts on the fixed ball bracket through the fixed shaft, so that the problem that the weight of the fixed ball directly acts on the valve seat sealing ring is effectively solved, the sealing of the valve and the long-term use of the valve are ensured, and meanwhile, the fluorine-lined layer tensioning groove and the fluorine-lined layer tensioning hole are arranged, so that the service life of the valve is prolonged. The fixing ball and the handle rod can be effectively combined with the fluorine lining layer, and the fluorine lining layer is effectively prevented from being unshelled.

Description

Extra-large diameter fixed ball lined with fluoropolymer ball valve Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to an ultra-large diameter fixed ball fluoropolymer-lined ball valve. Background Technology

[0002] Since the beginning of the 21st century, the global petrochemical industry has gradually shifted to China, making China a major producer of petrochemical products. China currently ranks second and third globally in crude oil processing and ethylene production capacity, respectively, and these figures are still increasing. However, my country has long relied on imports for petrochemical equipment, including specialized valves used in some critical processes. Imported valves are not only expensive but also extremely inconvenient to replace during maintenance. Therefore, it is an undeniable responsibility for my country's valve industry to focus on independent innovation, develop high-end valves, and replace imports with domestically produced ones.

[0003] Fluoroplastic-lined valves were first developed in the 1970s. Due to the special nature of their structure, the initial fluoroplastic-lined valves mainly focused on simple types like butterfly and ball valves, which were not suitable for handling strong acids, alkalis, and solvents in petrochemical pipelines. Later, Hastelloy, Monel, and nickel-based alloys were invented, solving the transportation problems in special petrochemical pipelines. However, these alloys contain large amounts of precious metals such as Ni, Cr, Nb, and Ti. Coupled with limited resources and high prices, fluoroplastic-lined valves became the ideal substitute for precious metal valves. Lined valves are a product of modern scientific and technological development.

[0004] The existing ball valve, as shown in Figure 2, mainly consists of a left valve body, a right valve body, a valve seat sealing ring, a stuffing box, F4 packing, a packing gland, a ball with a handle, and a handle. The original fluoropolymer-lined ball valve was formed by lining the inside of a carbon steel valve with fluoropolymer, and its structure and working principle were completely similar to those of a steel valve. Valve seat sealing rings are installed in the left and right valve bodies, clamping the ball with a handle. The clamping force provides internal sealing to the pipeline. When the central hole of the ball with a handle connects with the holes in the left and right valve bodies, the medium flows through the pipeline. Conversely, when the ball with a handle rotates 90°, the spherical sealing surfaces on both sides of the ball contact the valve seat sealing ring, disconnecting the medium from the pipeline. However, its valve diameter is limited. When a large-diameter ball valve is required, the increased valve diameter results in a very heavy ball with a handle. This weight acts on the valve seat sealing ring, which is detrimental to the valve's sealing and long-term use. Therefore, improvement and optimization are needed. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies by proposing an ultra-large diameter fixed ball fluoropolymer-lined ball valve. This valve is suitable for pipelines in industries such as petroleum, chemical, pharmaceutical, fertilizer, food, papermaking, and environmental protection, where the medium is a highly corrosive fluid such as strong acid, strong alkali, oxidizing, or reducing agents. It plays a crucial role in cutting off and facilitating the flow of the medium in the pipeline. The metal valve body is lined with fluoropolymer, and the surface in contact with the medium is also lined with fluoropolymer, combining the strength of metal with the corrosion resistance of fluoropolymer.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The design includes an ultra-large diameter fixed ball fluoropolymer-lined ball valve, comprising a central valve body. A left valve body is fixedly installed on the left side of the central valve body, and a right valve body is fixedly installed on the right side. A fixed ball bracket is fixedly installed through the bottom of the central valve body. A fixed shaft is rotatably installed on the upper end of the fixed ball bracket, and a fixed ball is fixedly installed on the upper end of the fixed shaft. Valve seat sealing rings are fixedly installed inside one side of both the left and right valve bodies, with one side of the valve seat sealing ring abutting against the fixed ball. A handle is fixedly installed through the central valve body on the top of the fixed ball. A stuffing box is fixedly installed through the top of the central valve body, and the handle passes through the stuffing box, which is filled with packing. A support frame is fixedly installed on the upper part of the stuffing box, and a packing gland is installed above the packing, with the packing gland fixedly connected to the stuffing box. A connecting shaft is fixedly installed on the upper end of the handle, and a turbine head is fixedly connected through the support frame to the upper end of the connecting shaft. The turbine head and the support frame are fixedly connected.

[0008] Preferably, the surface of the fixed ball is provided with tensioning holes for the fluoropolymer lining.

[0009] Preferably, the surface of the handle is provided with a plurality of fluoropolymer-lined tension grooves in a ring shape.

[0010] The advantages of this utility model of an ultra-large diameter fixed ball fluoropolymer-lined ball valve are as follows: This utility model has a fixed ball, which acts on the fixed ball support through a fixed shaft, effectively solving the problem of the weight of the fixed ball directly acting on the valve seat sealing ring, ensuring the valve's sealing and long-term use. At the same time, the fluoropolymer lining tension groove and fluoropolymer lining tension hole can effectively combine the fixed ball and the handle with the fluoropolymer lining, effectively preventing the fluoropolymer lining from peeling off.

[0011] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are 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.

[0013] Figure 1 is a schematic diagram of the structure of the ultra-large diameter fixed ball lined with fluoropolymer ball valve proposed in this utility model.

[0014] Figure 2 is a schematic diagram of the existing technology structure.

[0015] In the diagram: 1. Turbine head; 2. Packing gland; 3. Packing; 4. Packing box; 5. Handle; 6. Fluorine lining tension hole; 7. Valve seat seal ring; 8. Middle valve body; 9. Left valve body; 10. Fixed ball bracket; 11. Fixed shaft; 12. Right valve body; 13. Fluorine lining tension groove; 14. Support frame; 15. Connecting shaft; 16. Fixed ball. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0017] Referring to Figures 1-2, the extra-large diameter fixed ball lined ball valve includes a middle valve body 8. A left valve body 9 is fixedly installed on the left side of the middle valve body 8, and a right valve body 12 is fixedly installed on the right side of the middle valve body 8. A fixed ball bracket 10 is fixedly installed through the bottom of the middle valve body 8. A fixed shaft 11 is rotatably installed on the upper end of the fixed ball bracket 10. A fixed ball 16 is fixedly installed on the upper end of the fixed shaft 11. Valve seat sealing rings 7 are fixedly installed inside one side of both the left valve body 9 and the right valve body 12. One side of the valve seat sealing ring 7 abuts against the fixed ball 16, and the top of the fixed ball 16... A handle 5 is fixedly installed through the middle valve body 8. A stuffing box 4 is fixedly installed through the top of the middle valve body 8. The handle 5 passes through the stuffing box 4. The stuffing box 4 is filled with packing 3, which is F4 packing. A support frame 14 is fixedly installed on the upper part of the stuffing box 4. A packing gland 2 is installed above the packing 3. The packing gland 2 is fixedly connected to the stuffing box 4. A connecting shaft 15 is fixedly installed on the upper end of the handle 5. The upper end of the connecting shaft 15 passes through the support frame 14 and is fixedly connected to a turbine head 1. The turbine head 1 and the support frame 14 are fixedly connected.

[0018] The surface of the fixed ball 16 is provided with a fluoropolymer lining tensioning hole 6, which can ensure that the fluoropolymer lining is stably bonded to the fixed ball 16 and prevent the fluoropolymer lining from peeling off.

[0019] The surface of the handle 5 is provided with a plurality of fluoropolymer lining tension grooves 13 in a ring shape. There are 3 fluoropolymer lining tension grooves 13, which can ensure that the fluoropolymer lining is stably bonded to the handle 5 and prevent the fluoropolymer lining from peeling off.

[0020] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0021] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A large-bore fixed ball fluorine-lined ball valve comprising a valve body (8), characterized in that, A left valve body (9) is fixedly installed on the left side of the middle valve body (8), and a right valve body (12) is fixedly installed on the right side of the middle valve body (8). A fixed ball bracket (10) is fixedly installed through the bottom of the middle valve body (8). A fixed shaft (11) is rotatably installed on the upper end of the fixed ball bracket (10). A fixed ball (16) is fixedly installed on the upper end of the fixed shaft (11). A valve seat sealing ring (7) is fixedly installed inside one side of both the left valve body (9) and the right valve body (12). One side of the valve seat sealing ring (7) abuts against the fixed ball (16). A through-hole device is fixedly installed on the top of the fixed ball (16) through the middle valve body (8). The handle (5) is fixedly installed through the top of the valve body (8), the handle (5) passes through the packing box (4), the packing box (4) is filled with packing (3), the upper part of the packing box (4) is fixedly installed with a support frame (14), the packing gland (2) is installed above the packing (3), the packing gland (2) is fixedly connected to the packing box (4), the upper end of the handle (5) is fixedly installed with a connecting shaft (15), the upper end of the connecting shaft (15) passes through the support frame (14) and is fixedly connected with a turbine head (1), the turbine head (1) and the support frame (14) are fixedly connected.

2. The ultra-large bore fixed ball lined fluoropolymer ball valve according to claim 1, wherein, The surface of the fixed ball (16) is provided with a fluoropolymer-lined tension hole (6).

3. The ultra-large bore fixed ball lined fluoropolymer ball valve of claim 1, wherein, The surface of the handle (5) is provided with a plurality of fluoropolymer-lined tension grooves (13).

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