Shock resistant fluorine-lined ball valve

Abstract

The utility model provides a fluorine -lined ball valve of impact resistance belongs to valve technical field, including fluorine -lined valve body, one side of fluorin -lined valve body is connected with fluorine -lined valve cover, both sides of fluorine -lined valve body top and bottom all are installed the rod bushing, all are rotatably connected with valve stem in the rod bushing, the both sides of valve stem all are fixedly connected with the connecting block of each other, the inner wall of fluorine -lined valve body is rotatably connected with the connecting block, the side of the connecting block of each other is fixedly connected with the valve core, fluorine -lined valve body and fluorine -lined valve cover are provided with two sets of transmission assembly, the utility model solves the problem that when the valve is in the closed state for a long time, the fluid pressure in the pipeline will continue to act on the valve core on one side, forming a one-way continuous load, the valve core and the connected valve stem are easy to be slightly offset or deformed under the long-term pressure, affecting the probability of leakage of the sealing.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to an impact-resistant fluoropolymer-lined ball valve. Background Technology

[0002] Fluorine-lined ball valves, with their excellent corrosion resistance, high and low temperature resistance, and chemical stability due to the fluoroplastic lining of the valve body and valve cover, are widely used in chemical, pharmaceutical, metallurgical, environmental protection, and water treatment industries. Their core function is to drive the valve core to rotate through the valve stem, thereby achieving rapid opening and closing of the fluid passage. At the same time, the fluoroplastic lining isolates corrosive media from the metal substrate, ensuring long-term stable operation of the valve.

[0003] During use, the valve body will be closed and opened. When the valve is in the closed state for a long time, the fluid pressure in the pipeline will continuously act on one side of the valve core, forming a unidirectional continuous load. The valve core and the connected valve stem are prone to slight displacement or deformation under long-term pressure, which affects the seal and increases the probability of leakage. Therefore, an impact-resistant PTFE-lined ball valve is proposed. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] Given the following technical problems in the existing technology: when the valve is in the closed state for a long time, the fluid pressure in the pipeline will continuously act on one side of the valve core, forming a unidirectional continuous load. The valve core and the connected valve stem are prone to slight displacement or deformation under long-term pressure, which affects the seal and increases the probability of leakage.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an impact-resistant fluoropolymer-lined ball valve, comprising a fluoropolymer-lined valve body, a fluoropolymer-lined valve cover connected to one side of the fluoropolymer-lined valve body, rod sleeves installed on both the upper and lower sides of the fluoropolymer-lined valve body, valve stems rotatably connected to each rod sleeve, connecting blocks fixedly connected to the adjacent ends of the valve stems, the connecting blocks rotatably connected to the inner wall of the fluoropolymer-lined valve body, valve cores fixedly connected to the adjacent sides of the connecting blocks, and two sets of transmission components provided on the fluoropolymer-lined valve body and the fluoropolymer-lined valve cover, with impact-resistant damping components connected to the ends of the two sets of transmission components that extend into the fluoropolymer-lined valve cover.

[0007] By adopting the above technical solution, the valve is opened and closed by rotating the valve stem to drive the connecting block and valve core to rotate. At the same time, the movement of the valve stem is transmitted to the shock-absorbing component through the transmission component, providing conditions for shock absorption.

[0008] Furthermore, the fluoropolymer-lined valve cover is connected to the fluoropolymer-lined valve body by bolts, and the connection between the valve stem and the connecting block and the fluoropolymer-lined valve body is sealed.

[0009] By adopting the above technical solutions, the bolt connection ensures that the PTFE-lined valve cover and the PTFE-lined valve body are firmly assembled, which facilitates disassembly and maintenance. The sealing treatment prevents fluid leakage from the valve stem, connecting block and the PTFE-lined valve body from the connection, thus ensuring the valve's sealing performance.

[0010] Furthermore, the transmission assembly is connected to the corresponding valve stem. The transmission assembly includes a sprocket one mounted on the valve stem. A chain is connected to the outer side of the sprocket one, and a sprocket two is connected to the other side of the chain. A rotating rod is connected to the side of the sprocket two near the fluoropolymer-lined valve cover. A threaded rod is threadedly connected to the middle of the rotating rod, and a connecting limit strip is fixedly connected to the end of the threaded rod near the fluoropolymer-lined valve cover.

[0011] By adopting the above technical solution, when the valve stem rotates, it drives the first sprocket to rotate, which in turn drives the second sprocket and the rotating rod to rotate through the chain drive. Furthermore, due to the connection between the connecting limit strip and the anti-impact offset component, the threaded engagement between the rotating rod and the threaded rod converts the rotational motion into the linear motion of the threaded rod, thereby driving the connecting limit strip to move and realizing the transmission of power from the valve stem to the anti-impact offset component.

[0012] Furthermore, the first sprocket is connected to the second sprocket via a chain, and both the first sprocket and the second sprocket are engaged with the chain.

[0013] By adopting the above technical solution, the meshing transmission of sprocket one, sprocket two and chain ensures the transmission between valve stem and rotating rod.

[0014] Furthermore, the inner side of the rotating rod is provided with an internal thread cavity that matches the threaded rod, and the fluoropolymer-lined valve cover is provided with a through-hole that matches the rotating rod. One end of the rotating rod is located in the through-hole and is rotatably connected to the fluoropolymer-lined valve cover.

[0015] By adopting the above technical solution, the rotating rod rotates stably in the through-hole of the fluoropolymer-lined valve cover, and its inner thread cooperates with the threaded rod, converting the rotational motion of the rotating rod into the linear motion of the threaded rod.

[0016] Furthermore, two sets of impact-damping components are symmetrically arranged vertically. Each impact-damping component includes a rotating bar rotatably connected to the inner wall of the fluoropolymer-lined valve cover. Both ends of the rotating bar, near the valve core, are connected to a housing. A sliding rod is slidably connected to each of the two housings. An opening is provided on the side of the two housings that are close to each other. A connecting bar is fixedly connected to the side of the two sliding rods that are close to each other. One end of a drive plate is rotatably connected to the side of the connecting bar near the inner wall of the fluoropolymer-lined valve cover. The other end of the drive plate is rotatably connected to the inner wall of the fluoropolymer-lined valve cover. A slide rail is provided on the drive plate, and a slider is slidably connected in the slide rail.

[0017] By adopting the above technical solution, when the connecting limit strip drives the slider to move, the slider slides within the slide rail of the drive plate, pushing the drive plate to rotate around the connection point with the fluoropolymer-lined valve cover. The drive plate drives the movement of the connecting strip and the slide rod, and simultaneously drives the rotating strip to rotate, thereby allowing the slide rod to rotate and extend out of the housing, contacting the wall surface of the valve core. This applies an opposite force to the valve core, counteracting the force of fluid impact on the valve core and related components. This avoids the increased probability of liquid leakage due to the long-term pressure exerted by the liquid on the other side when the valve is closed for extended periods, which could cause the valve core and valve stem to shift.

[0018] Furthermore, the connecting strip extends from the movable port and connects to the slide rod, and the slider is rotatably connected to one end of the connecting limiting strip that extends into the fluoropolymer-lined valve cover.

[0019] By adopting the above technical solution, the connecting strip achieves stable linkage with the slide bar through the movable port, ensuring smooth sliding of the slide bar within the housing. The rotational connection between the slider and the connecting limit strip allows the linear motion of the connecting limit strip to be converted into the sliding of the slider within the slide rail, ensuring coordinated movement of all components of the impact-resistant countermeasurement assembly.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. During the valve closing process of this utility model, the movement of the valve stem can be transmitted through a transmission assembly composed of sprocket one, sprocket two, chain, rotating rod, etc., converting the rotational motion into the linear motion of the threaded rod, thereby driving the anti-impact counteracting assembly to operate. The sliding rod of the counteracting assembly will extend out and contact the valve core wall, applying a reverse force to the valve core, thereby counteracting the force of fluid impact on the valve core and related components. This avoids the valve core and valve stem from shifting due to continuous fluid pressure when the valve is closed for a long time, significantly reducing the probability of liquid leakage and ensuring the stability and reliability of the valve in long-term use.

[0022] 2. The impact-resistant component of this utility model can be retracted when the valve ball core is in passage, reducing obstruction to fluid flow.

[0023] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the 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. Among them:

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0026] Figure 2 This is a top view of an embodiment of the present invention.

[0027] Figure 3 This is an embodiment of the present utility model. Figure 3 Schematic diagram of cross-section structure;

[0028] Figure 4 This is a schematic diagram of the impact mitigation component structure according to an embodiment of the present invention;

[0029] Reference numerals in the attached drawings: 1. Fluorine-lined valve body; 2. Fluorine-lined valve cover; 3. Rod sleeve; 4. Valve stem; 5. Connecting block; 6. Valve core; 71. Sprocket one; 72. Chain; 73. Sprocket two; 74. Rotating rod; 75. Threaded rod; 76. Connecting limit bar; 81. Drive plate; 82. Rotating bar; 83. Movable port; 84. Connecting bar; 85. Sleeve; 86. Slide rod; 87. Slide rail; 88. Slider. Detailed Implementation

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0033] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0034] Reference Figures 1-4 This utility model embodiment proposes an impact-resistant PTFE-lined ball valve, including a PTFE-lined valve body 1, a PTFE-lined valve cover 2 connected to one side of the PTFE-lined valve body 1, rod sleeves 3 installed on both the upper and lower sides of the PTFE-lined valve body 1, and valve stems 4 rotatably connected to each rod sleeve 3. The upper valve stem 4 can be connected to a handwheel for driving the rotation of the valve stem 4. Connecting blocks 5 are fixedly connected to the adjacent ends of the valve stems 4, and the connecting blocks 5 are rotatably connected to the inner wall of the PTFE-lined valve body 1. A valve core 6 is fixedly connected to the adjacent sides of the connecting blocks 5. Two sets of transmission components are provided on the PTFE-lined valve body 1 and the PTFE-lined valve cover 2. An impact-resistant counteracting component is connected to the end of each set of transmission components that extends into the PTFE-lined valve cover 2. The valve opening and closing is realized by the rotation of the valve stem 4 driving the connecting blocks 5 and the valve core 6 to rotate. At the same time, the movement of the valve stem 4 is transmitted to the impact-resistant counteracting component through the transmission components, providing conditions for counteracting impacts.

[0035] like Figure 1 , Figure 3 As shown, the fluoropolymer-lined valve cover 2 is connected to the fluoropolymer-lined valve body 1 by bolts. The valve stem 4 and the connection block 5 to the fluoropolymer-lined valve body 1 are all sealed. The bolt connection ensures that the fluoropolymer-lined valve cover 2 and the fluoropolymer-lined valve body 1 are firmly assembled and easy to disassemble and maintain. The sealing treatment prevents the fluid in the fluoropolymer-lined valve body 1 from leaking from the connection between the valve stem 4, the connection block 5 and the fluoropolymer-lined valve body 1, thus ensuring the valve's sealing performance.

[0036] like Figure 1 , Figure 3As shown, the transmission assembly is connected to the corresponding valve stem 4. The transmission assembly includes a sprocket 71 mounted on the valve stem 4. A chain 72 is connected to the outer side of the sprocket 71, and a sprocket 73 is connected to the other side of the chain 72. A rotating rod 74 is connected to the side of the sprocket 73 near the PTFE-lined valve cover 2. A threaded rod 75 is threadedly connected to the middle of the rotating rod 74. A connecting limit strip 76 is fixedly connected to the end of the threaded rod 75 near the PTFE-lined valve cover 2. When the valve stem 4 rotates, it drives the sprocket 71 to rotate. The chain 72 drives the sprocket 73 and the rotating rod 74 to rotate. Because the connecting limit strip 76 is connected to the anti-impact counteracting assembly, the threaded engagement between the rotating rod 74 and the threaded rod 75 converts the rotational motion into the linear motion of the threaded rod 75, thereby driving the connecting limit strip 76 to move, realizing the transmission of power from the valve stem 4 to the anti-impact counteracting assembly.

[0037] like Figures 1-3 As shown, sprocket 1 71 is connected to sprocket 2 73 via chain 72. Both sprocket 1 71 and sprocket 2 73 are meshed with chain 72. The meshing transmission of sprocket 1 71, sprocket 2 73 and chain ensures the transmission between valve stem 4 and rotating rod 74.

[0038] like Figure 1 , Figure 3 As shown, the inner side of the rotating rod 74 has an internal thread cavity that matches the threaded rod 75, and the fluoropolymer-lined valve cover 2 has a through-hole that matches the rotating rod 74. One end of the rotating rod 74 is located in the through-hole and is rotatably connected to the fluoropolymer-lined valve cover 2. The rotating rod 74 rotates stably in the through-hole of the fluoropolymer-lined valve cover 2, and its internal thread matches the threaded rod 75, converting the rotational motion of the rotating rod 74 into the linear motion of the threaded rod 75.

[0039] like Figure 3 , Figure 4As shown, two sets of impact-damping components are symmetrically arranged vertically. Each impact-damping component includes a rotating bar 82 rotatably connected to the inner wall of the PTFE-lined valve cover 2. Both ends of the rotating bar 82, near the valve core 6, are connected to housings 85. Sliding rods 86 are slidably connected to each housing 85. An opening 83 is provided on the side of the two housings 85 that is close to each other. A connecting bar 84 is fixedly connected to the side of the two sliding rods 86 that is close to each other. One end of a drive plate 81 is rotatably connected to the side of the connecting bar 84 near the inner wall of the PTFE-lined valve cover 2. The other end of the drive plate 81 is rotatably connected to the inner wall of the PTFE-lined valve cover 2. A slide rail 87 is provided on the drive plate 81. A slider 88 is slidably connected in the middle. When the connecting limit bar 76 moves the slider 88, the slider 88 slides within the slide rail 87 of the drive plate 81, pushing the drive plate 81 to rotate around the connection point with the fluoropolymer-lined valve cover 2. The drive plate 81 drives the connecting bar 84 and the slide rod 86 to move, and simultaneously drives the rotating bar 82 to rotate, thereby causing the slide rod 86 to rotate and extend out of the housing 85, contacting the wall surface of the valve core 6. This applies an opposite force to the valve core 6, counteracting the force of fluid impact on the valve core 6 and related components. This prevents the pressure exerted by the liquid on the other side for a long time when the valve is closed, thus avoiding an increase in the probability of liquid leakage due to the displacement of the valve core 6 and valve stem 4.

[0040] The connecting bar 84 extends into the movable port 83 and connects to the slide bar 86. The slider 88 and the connecting limit bar 76 are rotatably connected at one end of the fluoropolymer-lined valve cover 2. The connecting bar 84 achieves stable linkage with the slide bar 86 through the movable port 83, ensuring smooth sliding of the slide bar 86 within the housing 85. The rotatable connection between the slider 88 and the connecting limit bar 76 allows the linear motion of the connecting limit bar 76 to be converted into the sliding of the slider 88 within the slide rail 87, ensuring coordinated movement of all components of the impact-resistant countermeasures assembly.

[0041] The specific implementation method is as follows: During operation, the handwheel connected to the upper valve stem 4 is rotated to drive the valve stem 4 to rotate stably within the rod sleeve 3. The valve stem 4 drives the valve core 6 between the two sets of connecting blocks 5 to rotate synchronously through the connecting blocks 5 fixed at both ends, thus realizing the opening or closing of the valve.

[0042] The shock-absorbing component functions when the valve is closed. The handwheel drives the valve stem 4, causing the valve core 6 to rotate and close. Simultaneously, the rotation of the valve stem 4 drives its mounted sprocket 71 to rotate. Sprocket 71, through the meshing chain 72, drives sprocket 73, which in turn rotates the rotating rod 74. The rotation of the rotating rod 74 causes the threaded rod 75 to move. Because the connecting limit strip 76 is connected to the slider 88, it does not rotate. The threaded engagement between the rotating rod 74 and the threaded rod 75 converts the rotational motion into the linear motion of the threaded rod 75. The movement of 76 drives the movement of slider 88. Slider 88 slides within the slide rail 87 of drive plate 81 and pushes drive plate 81 to rotate. When drive plate 81 rotates, it drives the movement of connecting bar 84 and slide rod 86, which in turn drives rotating bar 82 to rotate. This causes slide rod 86 to rotate and extend out of housing 85, contacting the wall of valve core 6 and applying an opposite force to valve core 6. This counteracts the force of fluid impact on valve core 6 and related components, preventing the pressure exerted by liquid on the other side for a long time when the valve is closed, thus increasing the probability of liquid leakage due to displacement of valve core 6 and valve rod 4.

[0043] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An impact-resistant PTFE-lined ball valve, comprising a PTFE-lined valve body (1), characterized in that, A fluoropolymer-lined valve body (1) is connected to a fluoropolymer-lined valve cover (2) on one side. Rod sleeves (3) are installed on both the upper and lower sides of the fluoropolymer-lined valve body (1). A valve stem (4) is rotatably connected to each of the rod sleeves (3). A connecting block (5) is fixedly connected to the end of each valve stem (4) that is close to each other. The connecting block (5) is rotatably connected to the inner wall of the fluoropolymer-lined valve body (1). A valve core (6) is fixedly connected to the side of each connecting block (5) that is close to each other. Two sets of transmission components are provided on the fluoropolymer-lined valve body (1) and the fluoropolymer-lined valve cover (2). An anti-impact countermeasure component is connected to the end of each of the two sets of transmission components that protrude into the fluoropolymer-lined valve cover (2).

2. The impact-resistant PTFE-lined ball valve according to claim 1, characterized in that: The fluoropolymer-lined valve cover (2) is connected to the fluoropolymer-lined valve body (1) by bolts.

3. The impact-resistant PTFE-lined ball valve according to claim 2, characterized in that: The transmission assembly is connected to the corresponding valve stem (4). The transmission assembly includes a sprocket (71) mounted on the valve stem (4). A chain (72) is connected to the outer side of the sprocket (71). A sprocket (73) is connected to the other side of the chain (72). A rotating rod (74) is connected to the side of the sprocket (73) near the fluoropolymer-lined valve cover (2). A threaded rod (75) is threaded in the middle of the rotating rod (74). A connecting limit strip (76) is fixedly connected to the end of the threaded rod (75) near the fluoropolymer-lined valve cover (2).

4. The impact-resistant fluoropolymer-lined ball valve according to claim 3, characterized in that: The first sprocket (71) is connected to the second sprocket (73) via a chain (72), and both the first sprocket (71) and the second sprocket (73) are engaged with the chain (72).

5. The impact-resistant PTFE-lined ball valve according to claim 4, characterized in that: The inner side of the rotating rod (74) is provided with an internal thread cavity that matches the threaded rod (75), and the fluoropolymer-lined valve cover (2) is provided with a through-hole that matches the rotating rod (74). One end of the rotating rod (74) is located in the through-hole and is rotatably connected to the fluoropolymer-lined valve cover (2).

6. The impact-resistant PTFE-lined ball valve according to claim 4, characterized in that: Two sets of impact-resistant countermeasures are arranged symmetrically on top and bottom. The impact-resistant countermeasures include a rotating bar (82) that is rotatably connected to the inner wall of the fluoropolymer-lined valve cover (2). Both ends of the rotating bar (82) and the side near the valve core (6) are connected to a housing (85). A slide rod (86) is slidably connected in both housings (85). An movable opening (83) is opened on the side of the two housings (85) that are close to each other. A connecting bar (84) is fixedly connected on the side of the two slide rods (86) that are close to each other. One end of a drive plate (81) is rotatably connected to the side of the connecting bar (84) that is close to the inner wall of the fluoropolymer-lined valve cover (2). The other end of the drive plate (81) is rotatably connected to the inner wall of the fluoropolymer-lined valve cover (2). A slide rail (87) is opened on the drive plate (81). A slider (88) is slidably connected in the slide rail (87).

7. The impact-resistant PTFE-lined ball valve according to claim 6, characterized in that: The connecting strip (84) extends from the movable port (83) and connects to the slide rod (86), and the slider (88) is rotatably connected to one end of the connecting limit strip (76) that protrudes into the fluoropolymer-lined valve cover (2).

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