High-safety pneumatic fluorine-lined ball valve

Abstract

The utility model provides a high safety pneumatic lining fluorine ball valve, including ball valve body, safety maintenance subassembly, valve ball, sealing seat and pneumatic actuator, said ball valve body is symmetrically fixed with two said safety maintenance subassembly, safety maintenance subassembly and said valve ball mutually contact, the both sides of valve ball also contact with said sealing seat, said pneumatic actuator is connected with said safety maintenance subassembly. The sealing seat is fixedly installed in the ball valve body, the pneumatic actuator is fixedly installed on the ball valve body, the pneumatic actuator is fixedly connected with the valve ball, and the valve ball is rotatably installed in the ball valve body. Media are effectively prevented from entering the space between the valve body and the valve ball, displacement of the media is limited, and the situation that the valve ball is stuck due to accumulation of the media is avoided. The sealing partition plays a blocking role, the retention medium is limited in a specific area and is smoothly discharged through the pollution discharge hole, and the accumulation risk is avoided. And meanwhile, the safety overhaul assembly is detachable, deep overhaul is facilitated, and maintenance convenience and safety are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball valves, and in particular relates to a high-safety pneumatic fluorine-lined ball valve. Background Art

[0002] Fluorine-lined ball valve is a valve used to control fluid media, especially suitable for flow control in pipelines of strong acid, strong alkali, highly corrosive liquids and gases. It uses a ball with a circular through hole as the opening and closing part, and the ball rotates around the center line of the valve body with the valve stem to open and close the valve.

[0003] At present, the matching design between the valve ball, valve seat and sealing ring generally pursues tightness to ensure the excellent sealing performance of the ball valve. However, in order to ensure that the valve ball can be opened and closed normally, the internal structure of the valve body must be able to accommodate the valve ball smoothly and allow it to rotate freely. However, over time, the contact surface between the valve ball, valve seat and sealing ring will produce tiny gaps due to wear. These gaps will gradually expand under the action of the medium flowing inside the valve body, allowing the medium to penetrate into the valve body and between the valve ball. The residual of a small amount of medium will not only increase the wear coefficient of the valve ball surface and reduce its service life, but the retention of a large amount of medium will directly hinder the free rotation of the valve ball and even cause the valve ball to get stuck. Once this happens, it will seriously affect the normal operation of the ball valve and may even cause a safety accident.

[0004] Therefore, it is very necessary to invent a high-safety pneumatic fluorine-lined ball valve. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a high-safety pneumatic fluorine-lined ball valve, including a ball valve body, a safety inspection component, a valve ball, a sealing seat and a pneumatic actuator. Two of the safety inspection components are symmetrically fixedly installed on the ball valve body, the safety inspection component and the valve ball are in contact with each other, and both sides of the valve ball are also in contact with the sealing seat, the sealing seat is fixedly installed inside the ball valve body, the pneumatic actuator is fixedly installed on the ball valve body, the pneumatic actuator is fixedly connected to the valve ball, and the valve ball is rotatably installed in the ball valve body;

[0006] The safety inspection component includes an inspection valve plate, a sealing partition, a cleaning hole, a drain hole, a plug and a sealing ring. A plurality of the sealing partitions are arranged on the inner surface of the inspection valve plate. The cleaning holes and drain holes are respectively arranged between the sealing partitions. The cleaning holes and drain holes are opened on the inspection valve plate and blocked by the plug. The sealing ring is embedded on the surface of the inspection valve plate, and the inspection valve plate is fixedly mounted on the valve body of the ball valve.

[0007] Preferably, the inspection valve plate is a hemispherical structure, the inner side of which is a concave arc surface, the valve ball is located between the inspection valve plate and the sealing seat, the inspection valve plate is fixed to the ball valve body by bolts, and the mounting holes opened on the inspection valve plate are located around the periphery of the sealing ring.

[0008] Preferably, the sealing partition is an arc-shaped protrusion and is an integrated structure with the inspection valve plate. The distance between the inspection valve plates is a medium retention area, allowing the medium to be retained therein.

[0009] Preferably, the cleaning holes are located above the drain holes and are both opened in the medium retention area between the inspection valve plates, and the diameter of the cleaning holes is smaller than the diameter of the drain holes.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The utility model innovatively introduces a safety inspection component, which plays multiple roles in blocking the medium from entering the valve body and the valve ball. At the same time, it can also effectively limit the medium that has entered, preventing the medium from uncontrollably displacing during the free rotation of the ball, thereby avoiding the valve ball jamming caused by medium accumulation. Specifically, when the medium penetrates from the valve seat or the sealing ring, the sealing partition in the safety inspection component will immediately play a blocking role. Even if the medium can pass through the sealing partition, it will be restricted to the spacing between the sealing partitions, thereby avoiding the free displacement of the medium between the valve ball and the valve body.

[0012] In addition, in order to facilitate the handling of retained media, the safety inspection component is also designed with a drain hole. Through this structure, the retained media can be discharged smoothly, thereby avoiding the accumulation of media between the valve ball and the sealing partition, which in turn causes the risk of the valve ball being stuck. What is more worth mentioning is that when it is necessary to inspect the inside of the ball valve more deeply, it can be achieved by disassembling the safety inspection component, which further improves the maintenance convenience and safety of the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the disassembly structure of the safety maintenance component of the utility model.

[0014] Figure 2 It is a schematic diagram of the overall back structure of the utility model.

[0015] Figure 3 It is a structural schematic diagram of the safety maintenance component of the utility model.

[0016] In the figure:

[0017] Ball valve body 1, safety inspection component 2, inspection valve plate 21, sealing partition 22, cleaning hole 23, drain hole 24, plug 25, sealing ring 26, valve ball 3, sealing seat 4, pneumatic actuator 5. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0019] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0020] As attached Figure 1 To Attachment Figure 3 As shown:

[0021] The utility model provides a high-safety pneumatic fluorine-lined ball valve, comprising a ball valve body 1, a safety inspection component 2, a valve ball 3, a sealing seat 4 and a pneumatic actuator 5. Two safety inspection components 2 are symmetrically fixedly installed on the ball valve body 1. The safety inspection component 2 and the valve ball 3 are in contact with each other. Both sides of the valve ball 3 are also in contact with the sealing seat 4. The sealing seat 4 is fixedly installed inside the ball valve body 1. The pneumatic actuator 5 is fixedly installed on the ball valve body 1. The pneumatic actuator 5 is fixedly connected to the valve ball 3. The valve ball 3 is rotatably installed in the ball valve body 1. Under the action of the pneumatic actuator 5, the valve ball 3 can achieve smooth and stable switching action. Both the valve ball 3 and the ball valve body 1 are provided with fluorine lining.

[0022] The safety inspection assembly 2 includes an inspection valve plate 21, a sealing partition 22, a cleaning hole 23, a drain hole 24, a plug 25 and a sealing ring 26. The inner surface of the inspection valve plate 21 is provided with a plurality of the sealing partitions 22, and the cleaning holes 23 and drain holes 24 are respectively provided between the sealing partitions 22. The cleaning holes 23 and drain holes 24 are provided on the inspection valve plate 21 and blocked by the plug 25. The sealing ring 26 is embedded on the surface of the inspection valve plate 21, and the inspection valve plate 21 is fixedly mounted on the ball valve body 1. The safety inspection assembly 2 plays multiple roles in blocking the medium from entering the valve body 1 and the valve ball 3. At the same time, it can also effectively limit the medium that has entered, and prevent the medium from uncontrollably displacing during the free rotation of the ball, thereby avoiding the valve ball jamming phenomenon that may be caused by the accumulation of the medium.

[0023] Embodiment 1:

[0024] Specifically, the inspection valve plate 21 is a hemispherical structure, and its inner side is a concave arc surface. The valve ball 3 is located between the inspection valve plate 21 and the sealing seat 4, forming a closed medium channel. The inspection valve plate 21 is firmly fixed to the ball valve body 1 by bolts. This fixing method is simple and reliable, ensuring the stability of the inspection valve plate 21 during operation. The mounting holes opened on the inspection valve plate 21 are located around the periphery of the sealing ring 26. This design avoids direct communication between the mounting holes and the medium channel, further enhancing the sealing performance of the ball valve. At the same time, the location of the mounting holes also facilitates the installation and removal of the inspection valve plate 21, providing convenience for the maintenance and inspection of the ball valve.

[0025] Specifically, the sealing partition 22 is an arc-shaped protrusion and is an integrated structure with the inspection valve plate 21, so that the sealing partition 22 can fit more closely between the valve ball 3 and the sealing seat 4 to form an effective medium barrier. The spacing between the inspection valve plates 21 is a medium retention area, which allows a small amount of infiltrated medium to be retained here without further diffusing to the key part between the valve ball 3 and the sealing seat 4. This design not only avoids direct erosion of the valve ball 3 and the sealing seat 4 by the medium, but also reduces the possibility of free flow of the medium inside the ball valve, thereby reducing the risk of medium accumulation and jamming of the valve ball 3.

[0026] Specifically, the cleaning holes 23 are located above the drain holes 24 and are all opened in the medium retention area between the inspection valve plates 21. This layout not only facilitates the cleaning of the medium, but also ensures the effectiveness and efficiency of the cleaning process. The diameter of the cleaning hole 23 is smaller than the diameter of the drain hole 24. This size difference enables the cleaning hole 23 to be used as a preliminary cleaning channel, while the drain hole 24 is used as the main medium discharge channel. When it is necessary to clean the medium retention area, you can first perform preliminary cleaning through the cleaning hole 23 to discharge the medium in the upper part of the medium retention area. Then, open the drain hole 24 to completely discharge the medium at the bottom of the medium retention area. This hierarchical cleaning method can not only ensure the effective discharge of the medium, but also avoid splashing and leakage of the medium during the cleaning process.

[0027] Embodiment 2:

[0028] First, when the ball valve is in a closed or open state, the pneumatic actuator 5 drives the valve ball 3 to rotate in the ball valve body 1 according to the control signal. The rotation of the valve ball 3 is restricted and guided by the safety inspection component 2 to ensure that it can form a tight seal between the sealing seat 4 to prevent medium leakage. The core of the safety inspection component 2 lies in the design of the inspection valve plate 21 and the sealing partition 22. As an arc-shaped protruding structure, the sealing partition 22 not only enhances the sealing performance of the inspection valve plate 21, but also effectively prevents the medium from penetrating from the gap between the valve ball 3 and the inspection valve plate 21. During the operation of the ball valve, if the medium penetrates from the valve seat or the sealing ring, the sealing partition 22 will first play a blocking role and limit the medium to the medium retention area between the sealing partition 22. The design of the medium retention area allows a small amount of medium to be retained here without further diffusing to the key part between the valve ball 3 and the sealing seat 4, thereby avoiding the risk of medium accumulation and jamming of the valve ball 3. When it is necessary to clean the medium retention area, the cleaning hole 23 can be opened to discharge the medium in the upper part of the medium retention area through the cleaning hole 23. If a thorough cleaning is required, the drain hole 24 can be further opened to thoroughly discharge the medium at the bottom of the medium retention area. The diameter difference design of the cleaning hole 23 and the drain hole 24 makes the cleaning process more efficient and convenient. In addition, the sealing ring 26 embedded on the inspection valve plate 21 enhances the sealing performance of the ball valve, ensuring that the medium will not leak from the interface between the inspection valve plate 21 and the ball valve body 1. At the same time, the inspection valve plate 21 is fixedly mounted on the ball valve body 1 by bolts to ensure its stability and reliability.

[0029] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A high-safety pneumatic fluorine-lined ball valve, characterized in that: The invention comprises a ball valve body (1), a safety inspection component (2), a valve ball (3), a sealing seat (4) and a pneumatic actuator (5), wherein two safety inspection components (2) are symmetrically fixedly mounted on the ball valve body (1), the safety inspection component (2) and the valve ball (3) are in contact with each other, and both sides of the valve ball (3) are also in contact with the sealing seat (4), the sealing seat (4) is fixedly mounted inside the ball valve body (1), the pneumatic actuator (5) is fixedly mounted on the ball valve body (1), the pneumatic actuator (5) is fixedly connected to the valve ball (3), and the valve ball (3) is rotatably mounted inside the ball valve body (1); The safety inspection component (2) comprises an inspection valve plate (21), a sealing partition (22), a cleaning hole (23), a sewage discharge hole (24), a plug (25) and a sealing ring (26); a plurality of the sealing partitions (22) are arranged on the inner surface of the inspection valve plate (21); the cleaning holes (23) and sewage discharge holes (24) are arranged between the sealing partitions (22); the cleaning holes (23) and sewage discharge holes (24) are opened on the inspection valve plate (21) and blocked by the plug (25); the sealing ring (26) is embedded on the surface of the inspection valve plate (21); the inspection valve plate (21) is fixedly mounted on the ball valve body (1).

2. A high-safety pneumatic fluorine-lined ball valve as claimed in claim 1, characterized in that: The inspection valve plate (21) is a hemispherical structure, the inner side of which is a concave arc surface. The valve ball (3) is located between the inspection valve plate (21) and the sealing seat (4). The inspection valve plate (21) is fixed to the ball valve body (1) by bolts. The mounting holes provided on the inspection valve plate (21) are located around the periphery of the sealing ring (26).

3. A high-safety pneumatic fluorine-lined ball valve as claimed in claim 1, characterized in that: The sealing partition (22) is an arc-shaped protrusion and is an integrated structure with the inspection valve plate (21). The spacing between the inspection valve plates (21) is a medium retention area, allowing the medium to be retained therein.

4. A high-safety pneumatic fluorine-lined ball valve as claimed in claim 1, characterized in that: The cleaning holes (23) are located above the drain holes (24) and are both opened in the medium retention area between the inspection valve plates (21); the diameter of the cleaning holes (23) is smaller than the diameter of the drain holes (24).

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