A new valve structure

Abstract

The utility model relates to valve structure technical field discloses a novel valve structure, include: valve body, hollow chamber is arranged in the valve body inside, valve plate is arranged in the hollow chamber, and the valve plate includes two semicircular components, and the semicircular components are fixed combination formation through detachable connecting piece, and the outer surface of valve plate is covered with coating, sealing ring, and the outer peripheral surface of sealing ring is attached with the inner wall of hollow chamber. Adopt split type valve plate design, and the valve plate is divided into two semicircular components, and when local wear and tear only needs to replace single component instead of entire valve plate, and the functional coating is especially arranged on the outer surface of valve plate, effectively improves the durability of valve plate in harsh working environment, prolongs the overall service life of valve. The close cooperation of sealing ring and the inner wall of valve body through careful design ensures the absolute sealing property of valve under the closed state, can reliably prevent leakage even under high pressure or corrosive medium working condition, greatly improves the safety performance of valve.

Description

Technical Field

[0001] This utility model relates to the field of valve structure technology, specifically to a novel valve structure. Background Technology

[0002] A pneumatic butterfly valve is a type of valve that controls the flow of fluid or regulates its flow by rotating a valve plate driven by a pneumatic actuator. Currently used pneumatic butterfly valves often use titanium, ceramic, or other materials for their core valve plate. However, these materials are prone to problems such as cavitation, wear, and coating peeling during operation, leading to poor sealing, air and material leakage, and even the introduction of magnetic impurities due to coating peeling, which affects the cleanliness of the system.

[0003] Valve plate seals often use ordinary rubber rings, which are prone to aging and hardening. Furthermore, their structural design makes replacement inconvenient, further increasing the risk of seal failure and affecting the long-term stable operation of the equipment. Meanwhile, the valve body uses a one-piece molded circular ring design. Although the structure is simple, when the valve plate seal is damaged, disassembly and replacement are difficult, often requiring the replacement of the entire valve body or valve. This not only results in low maintenance efficiency but also significantly increases maintenance costs. Utility Model Content

[0004] In view of this, the present invention provides a novel valve structure to solve the problem of air and material leakage caused by poor sealing in existing pneumatic valves.

[0005] This utility model provides a novel valve structure, including:

[0006] The valve body has a hollow cavity inside.

[0007] The valve plate is movably disposed in the hollow cavity and is adapted to switch between a blocking state and a yielding state. The valve plate includes two semi-circular components, which are fixedly assembled by a detachable connector. The outer surface of the valve plate is covered with a coating.

[0008] The sealing ring has its outer circumferential surface fitted against the inner wall of the hollow cavity.

[0009] In the blocking state, the valve plate is adapted to press against the sealing ring to block the hollow cavity; in the yielding state, the valve plate is adapted to move relative to the sealing ring to allow the hollow cavity to open.

[0010] Beneficial Effects: The split valve plate design divides the valve plate into two semi-circular components. This modular structure greatly facilitates daily valve maintenance and replacement of damaged parts. When local wear occurs, only individual components need to be replaced instead of the entire valve plate, significantly reducing maintenance costs. A functional coating is specially applied to the outer surface of the valve plate. This coating can be made of wear-resistant, corrosion-resistant, or friction-reducing materials depending on different operating conditions, effectively improving the durability of the valve plate in harsh working environments and extending the overall service life of the valve. The carefully designed sealing ring's tight fit with the inner wall of the valve body ensures absolute sealing when the valve is closed, reliably preventing leakage even under high pressure or corrosive media conditions, greatly improving the valve's safety performance.

[0011] In one alternative embodiment, the detachable connector is a bolt and a nut, and the mating edges of the two semi-circular components are respectively provided with corresponding bolt holes.

[0012] Beneficial effects: Using bolts and nuts as detachable connectors is convenient and inexpensive to procure, which helps control the overall production cost. The bolt connection method is easy to operate, and only conventional tools are needed to complete the disassembly and assembly, which greatly improves the efficiency of on-site maintenance. Setting corresponding bolt holes at the mating edge can ensure that the two semi-circular parts are accurately aligned, avoiding poor sealing problems caused by assembly errors.

[0013] In one alternative embodiment, the sealing ring has a circular cross-sectional shape, and its outer peripheral surface is provided with a positioning flange that is adapted to the inner wall of the hollow cavity.

[0014] Beneficial effects: The annular cross-section provides the sealing ring with optimal stress distribution characteristics, allowing for uniform deformation under medium pressure and preventing failure caused by localized stress concentration; the positioning flange structure achieves a perfect fit with the valve body cavity, improving installation and positioning accuracy. Even with slight wear on the main sealing surface, the flange structure can still provide auxiliary sealing. This allows the valve to adapt to a wider pressure range and temperature fluctuations, extending the replacement cycle of the seals.

[0015] In one alternative embodiment, the coating is a diamond coating with a preset thickness.

[0016] Beneficial effects: By employing a diamond coating to provide surface protection for the valve plate, the use of diamond material—which possesses the highest known hardness and extremely low coefficient of friction—gives the valve plate surface excellent wear resistance. Precise control of the coating thickness ensures performance while avoiding brittleness issues caused by excessive coating thickness. The chemical inertness of the diamond coating also effectively resists corrosion from various acidic and alkaline media.

[0017] In one optional embodiment, the mating surfaces of the two semi-circular components are respectively provided with mutually compatible positioning grooves and positioning protrusions.

[0018] Beneficial effects: By setting up mutually cooperating positioning grooves and positioning protrusions, the self-centering function of the two semi-circular parts is realized, making on-site assembly more convenient and accurate. This interlocking structure can effectively resist shear force when the valve is working, prevent relative displacement of the connection parts, and also share the force of the bolt connection, reducing the risk of fastener loosening and further improving the reliability of the valve in long-term use.

[0019] In one alternative implementation, the actuator is connected to the valve plate via a rotating shaft, and a bearing is provided between the rotating shaft and the valve body.

[0020] Beneficial effects: Intelligent control of valves is achieved through the actuator; the direct mechanical connection between the actuator and the valve plate ensures rapid response; the bearing support structure reduces the coefficient of rotational friction; and the modular connection method facilitates the replacement or upgrading of the actuator, providing convenience for the intelligent transformation of valve systems.

[0021] In one alternative embodiment, the sealing ring is made of a synthetic material.

[0022] Beneficial effects: By using synthetic materials to make the sealing ring, the performance has been improved. Modern synthetic materials can simultaneously possess excellent elasticity, wide temperature adaptability and excellent chemical stability, and can resist most corrosive media such as acids, alkalis and solvents, greatly expanding the application range of the product.

[0023] In one alternative embodiment, the outer walls of both semi-circular components are provided with reinforcing ribs.

[0024] Beneficial effects: By reinforcing the layout of the ribs, the bending stiffness of the valve plate is improved without significantly increasing the weight, effectively preventing structural deformation under high pressure differential conditions; the special orientation design of the ribs can also guide the fluid to pass smoothly, reducing the occurrence of turbulence and cavitation.

[0025] In one alternative implementation, the actuator is provided with a stroke limit block to limit the rotation angle of the valve plate.

[0026] Beneficial effects: The mechanical limit block can precisely control the opening angle of the valve plate within a preset range, ensuring that the preset opening degree is achieved in each operation. The hard stop design avoids over-travel of the actuator and protects the transmission mechanism from impact damage. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the valve structure of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Actuator; 2. Valve body; 3. Valve plate; 4. Sealing ring; 5. Hollow cavity. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0035] A pneumatic butterfly valve is a key valve that uses a pneumatic actuator to drive the valve plate 3 to rotate, thereby controlling fluid flow or regulating flow. Its core valve plate 3 is typically made of high-performance materials such as titanium or ceramic. However, these materials are prone to cavitation and wear during long-term operation due to fluid erosion and pressure changes, leading to coating peeling. Coating peeling not only damages the sealing performance of the valve plate 3, causing air and material leaks, but may also introduce magnetic impurities from ceramic or titanium coating fragments, contaminating the fluid medium and severely affecting the system's cleanliness and stability. Furthermore, the sealing ring 4 of the valve plate 3 is often made of ordinary rubber, which is prone to aging and hardening under high temperature, high pressure, or chemical corrosion environments, losing elasticity and further increasing the risk of seal failure.

[0036] In terms of structural design, traditional pneumatic butterfly valves typically employ a one-piece molded circular ring design for the valve body 2. While this simplifies the manufacturing process, it presents significant drawbacks in maintenance. When the valve plate 3 and sealing ring 4 are damaged and need replacement, disassembly and replacement are extremely difficult due to structural limitations, often requiring the replacement of the entire valve body 2 or even the entire valve. This not only leads to low maintenance efficiency and affects production continuity but also significantly increases spare parts costs and maintenance expenses. Furthermore, the aging of the sealing ring 4 and the inconvenience of structural disassembly create a vicious cycle, causing a decline in the valve's reliability during long-term use and making it difficult to meet the demands of high-precision, high-cleanliness industrial environments.

[0037] The following is combined Figure 1 The following describes embodiments of the present invention.

[0038] According to an embodiment of this utility model, a novel valve structure is provided, comprising: a valve body 2, wherein a hollow cavity 5 is provided inside the valve body 2; a valve plate 3, wherein the valve plate 3 is movably disposed within the hollow cavity 5, and the valve plate 3 is adapted to switch between a blocking state and an avoidance state; the valve plate 3 includes two semi-circular components, which are fixedly assembled by a detachable connector, and the outer surface of the valve plate 3 is covered with a coating; a sealing ring 4, wherein the outer circumferential surface of the sealing ring 4 is in contact with the inner wall of the hollow cavity 5; in the blocking state, the valve plate 3 is adapted to press against the sealing ring 4 to block the hollow cavity 5, and in the avoidance state, the valve plate 3 is adapted to move relative to the sealing ring 4 to allow the hollow cavity 5 to be open.

[0039] The valve plate 3 is designed as a split unit, divided into two semi-circular components. This modular structure greatly facilitates daily maintenance and replacement of damaged parts. When local wear occurs, only a single component needs to be replaced instead of the entire valve plate 3, significantly reducing maintenance costs. A functional coating is specially applied to the outer surface of the valve plate 3. This coating can be made of wear-resistant, corrosion-resistant, or friction-reducing materials depending on the different operating conditions, effectively improving the durability of the valve plate 3 in harsh working environments and extending the overall service life of the valve. The carefully designed sealing ring 4 fits tightly with the inner wall of the valve body 2, ensuring absolute sealing when the valve is closed. Even under high pressure or corrosive media conditions, it reliably prevents leakage, greatly improving the valve's safety performance.

[0040] Specifically, the detachable connectors are bolts and nuts, with corresponding bolt holes on the mating edges of the two semi-circular components. Using bolts and nuts as detachable connectors is convenient and inexpensive to procure, which helps control overall production costs. The bolt connection method is simple to operate, requiring only conventional tools for assembly and disassembly, greatly improving on-site maintenance efficiency. The corresponding bolt holes on the mating edges ensure precise alignment of the two semi-circular components, avoiding poor sealing problems caused by assembly errors.

[0041] Specifically, the sealing ring 4 is made of synthetic material. By selecting synthetic material to manufacture the sealing ring 4, performance is improved. Modern synthetic materials can simultaneously possess excellent elasticity, wide temperature adaptability, and outstanding chemical stability, and can resist most corrosive media such as acids, alkalis, and solvents, greatly expanding the application range of the product.

[0042] As one feasible implementation, the sealing ring 4 adopts a double-lip labyrinth structure, forming a stepped buffer cavity between the main sealing lip and the auxiliary sealing lip. When the main sealing surface fails, the medium needs to pass through multiple tortuous paths to leak, significantly improving the failure safety level; the buffer cavity can accumulate grease, which automatically forms a lubricating film when the valve is opened and closed, reducing the wear rate of the sealing ring 4.

[0043] In some embodiments, combined with Figure 1 As shown, the sealing ring 4 has a circular cross-sectional shape, and its outer circumference is provided with a positioning flange that matches the inner wall of the hollow cavity 5. The circular cross-section gives the sealing ring 4 optimal stress distribution characteristics, allowing it to deform evenly under medium pressure and avoiding failure caused by local stress concentration. The positioning flange structure achieves a perfect fit with the inner cavity of the valve body 2, improving installation positioning accuracy. Even if the main sealing surface experiences slight wear, the flange structure can still provide auxiliary sealing. This allows the valve to adapt to a wider pressure range and temperature fluctuations, extending the replacement cycle of the seals.

[0044] In some embodiments, combined with Figure 1As shown, the coating is a diamond coating with a preset thickness. The diamond coating provides surface protection for the valve plate 3. Diamond material has the highest known hardness and extremely low coefficient of friction, giving the valve plate 3 excellent wear resistance. By precisely controlling the coating thickness, performance can be guaranteed while avoiding brittleness caused by excessive coating thickness. The chemical inertness of the diamond coating also effectively resists corrosion from various acidic and alkaline media.

[0045] In some embodiments, combined with Figure 1 As shown, the mating surfaces of the two semi-circular components are respectively provided with mutually matching positioning grooves and positioning protrusions. By setting the mutually matching positioning grooves and positioning protrusions, the self-centering function of the two semi-circular components is realized, making on-site assembly more convenient and accurate. This interlocking structure can effectively resist shearing forces when the valve is working, prevent relative displacement of the connection parts, and also share the force of the bolt connection, reducing the risk of fastener loosening and further improving the reliability of the valve in long-term use.

[0046] In some embodiments, combined with Figure 1 As shown, actuator 1 is connected to valve plate 3 via a rotating shaft, and a bearing is provided between the rotating shaft and valve body 2. Intelligent valve control is achieved through the actuator mechanism. The direct mechanical connection between actuator 1 and valve plate 3 ensures rapid response, the bearing support structure reduces the coefficient of rotational friction, and the modular connection method facilitates the replacement or upgrading of actuator 1, providing convenience for the intelligent transformation of the valve system.

[0047] As a feasible implementation, the outer walls of both semi-circular components are equipped with reinforcing ribs. Through the layout of the reinforcing ribs, the bending stiffness of the valve plate 3 is improved without significantly increasing the weight, effectively preventing structural deformation under high pressure differential conditions; the special orientation design of the ribs can also guide the fluid to pass smoothly, reducing the occurrence of turbulence and cavitation.

[0048] In some embodiments, combined with Figure 1 As shown, the actuator 1 is equipped with a stroke limit block to limit the rotation angle of the valve plate 3. Through the mechanical limit block, the opening angle of the valve plate 3 can be precisely controlled within a preset range, ensuring that the preset opening degree is achieved in each operation. The hard stop design avoids overtravel of the actuator 1 and protects the transmission mechanism from impact damage.

[0049] The working process of this utility model valve is as follows: When the actuator 1 receives the control signal, it drives the rotating shaft to rotate, causing the valve plate 3, which is composed of two semi-circular parts connected by bolts, to rotate 90° in the hollow cavity 5. The valve plate 3 rotates from the fully open position parallel to the fluid direction to the closed position perpendicular to the fluid direction. During this process, the surface of the valve plate 3 covered with diamond coating forms a tight fit with the synthetic material sealing ring 4 with an annular cross section. The positioning flange ensures that the sealing ring 4 always maintains the best contact pressure with the inner wall of the valve body 2. When the valve is fully closed, the positioning groove and the protruding structure of the mating surface of the two semi-circular parts work together to form a stable force transmission path with the bolt connection. In the reverse operation, the actuator 1 drives the valve plate 3 to rotate. The reinforcing rib structure guides the fluid to pass smoothly and reduces the generation of turbulence. The rotating shaft supported by the bearing ensures smooth rotation until the valve plate 3 returns to the fully open position.

[0050] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A novel valve structure, characterized in that, include: Valve body (2), wherein a hollow cavity (5) is provided inside the valve body (2); Valve plate (3), which is movably disposed in the hollow cavity (5), is adapted to switch between a blocking state and an avoidance state; the valve plate (3) includes two semi-circular components, which are fixedly assembled by a detachable connector, and the outer surface of the valve plate (3) is covered with a coating. A sealing ring (4) is provided, the outer circumferential surface of which is fitted against the inner wall of the hollow cavity (5); In the blocking state, the valve plate (3) is adapted to press against the sealing ring (4) to block the hollow cavity (5), and in the yielding state, the valve plate (3) is adapted to move relative to the sealing ring (4) to open the hollow cavity (5).

2. The novel valve structure according to claim 1, characterized in that, The detachable connectors are bolts and nuts, and the mating edges of the two semi-circular components are respectively provided with corresponding bolt holes.

3. The novel valve structure according to claim 1, characterized in that, The sealing ring (4) has a circular cross-sectional shape, and its outer circumferential surface is provided with a positioning flange that is adapted to the inner wall of the hollow cavity (5).

4. The novel valve structure according to claim 3, characterized in that, The coating is a diamond coating, and the coating has a preset thickness.

5. The novel valve structure according to claim 4, characterized in that, The mating surfaces of the two semi-circular components are respectively provided with mutually compatible positioning grooves and positioning protrusions.

6. The novel valve structure according to claim 1, characterized in that, It also includes an actuator (1), which is connected to the valve plate (3) via a rotating shaft, and a bearing is provided between the rotating shaft and the valve body (2).

7. The novel valve structure according to claim 6, characterized in that, The inner wall of the hollow cavity (5) is provided with an annular mounting groove, and the sealing ring (4) is embedded in the annular mounting groove.

8. The novel valve structure according to claim 1, characterized in that, The sealing ring (4) is made of synthetic material.

9. The novel valve structure according to claim 5, characterized in that, The outer walls of both semi-circular components are provided with reinforcing ribs.

10. The novel valve structure according to claim 6, characterized in that, The actuator (1) is provided with a stroke limit block to limit the flip angle of the valve plate (3).

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