Tank protective atmosphere nitrogen control valve

Abstract

The utility model discloses a tank protective atmosphere nitrogen control valve which comprises a valve body, a gas inlet pipe and a gas outlet pipe are installed on the two sides of the valve body respectively, the gas outlet pipe is connected with a conveying pipe, and the interior of the conveying pipe is fixedly connected with a first fixing frame and a second fixing frame. The first fixing frame and the second fixing frame are slidably connected with a movable rod. The tail end of the conveying pipe is sealed through the movable sealing ball and the sealing groove, when the valve is opened, the C-shaped valve element is separated from the sealing seat, the sealing ball is separated from the sealing groove, opening of the tail end of the conveying pipe is completed, nitrogen can be conveyed, and when the valve is closed, the C-shaped valve element and the sealing seat are sealed. Compared with an existing valve, when the valve is closed, the tail end of the conveying pipe is sealed at the same time, the situation that the conveying pipe is blocked by materials in the tank body is avoided, and therefore smooth nitrogen conveying is kept.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a nitrogen control valve for tank protective atmosphere. Background Technology

[0002] In the chemical production field, many materials naturally volatilize or react with oxygen in the air to form various compounds. Some of these volatile substances are toxic or have unpleasant odors, posing serious harm to the atmospheric environment. Substances that react with air can form other compounds, and may even cause deflagration or explosion, creating safety hazards. To address these issues, the most widely used technology is inert gas protection. This involves replacing the air in the material storage container with an inert gas (such as nitrogen or argon) that is less likely to react with the material, while simultaneously sealing the container to achieve the purpose of enclosed storage. Because nitrogen is easier to obtain and less expensive than argon, and its application is more widespread, inert gas protection technology is also known as nitrogen sealing technology in China.

[0003] In existing technologies, nitrogen control valves need to be connected to delivery pipes to deliver nitrogen to the inside of the tank. Furthermore, nitrogen valves are often located on the outside of the tank, and the end of the pipe extending into the tank is not sealed. As a result, the material inside the tank can easily block the pipe, leading to poor gas delivery.

[0004] Therefore, it is of great significance to provide a nitrogen control valve for the protective atmosphere of the tank to solve the problems existing in the prior art. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a nitrogen control valve for protective atmosphere in a tank, so as to solve the problem that in the prior art, the nitrogen control valve needs to be connected to a delivery pipe to deliver nitrogen to the inside of the tank, and the nitrogen valve is often located on the outside of the tank without sealing the end of the pipe that extends into the tank. As a result, the material inside the tank can easily block the pipe, thus causing poor gas delivery.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A nitrogen control valve for a protective atmosphere in a tank includes a valve body. An inlet pipe and an outlet pipe are respectively installed on both sides of the valve body. A delivery pipe is connected to the outlet pipe. A first fixed frame and a second fixed frame are fixedly connected inside the delivery pipe. A movable rod is slidably connected to the first fixed frame and the second fixed frame. A sealing ball is fixedly connected to one end of the movable rod. A flow cavity is provided at the end of the delivery pipe away from the outlet pipe. A sealing groove is provided on one side of the flow cavity. The sealing ball is sealed to the sealing groove.

[0008] Preferably, a rotating rod is rotatably connected inside the valve body, and a C-shaped valve core is fixedly connected to the rotating rod. A sealing seat is provided on the side of the valve body near the air intake pipe, and the C-shaped valve core is adapted to the sealing seat of the valve body.

[0009] Preferably, an eccentric frame is fixedly connected to one side of the middle part of the rotating rod, and the eccentric frame is hinged to a hinge rod, which is hinged to the other end of the movable rod.

[0010] Preferably, the inner diameter of the flow cavity is larger than the diameter of the sealing ball, and the surfaces of the first fixing frame and the second fixing frame are both provided with through holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention achieves sealing of the end of the delivery pipe through a movable sealing ball and sealing groove. When the valve is opened, the handle drives the rotating rod to rotate 90 degrees, causing the C-shaped valve core to rotate 90 degrees and disengage from the sealing seat, allowing nitrogen to be delivered. Simultaneously, the rotating rod, through an eccentric frame, drives the hinge rod to rotate like a crankshaft. The hinge rod then drives the movable rod to slide to the left, causing the sealing ball to disengage from the sealing groove, thus opening the end of the delivery pipe and enabling nitrogen delivery. When the valve is closed, the handle drives the rotating rod to rotate 90 degrees in the opposite direction, causing the C-shaped valve core to rotate 90 degrees and seal with the sealing seat. Simultaneously, the rotating rod, through an eccentric frame, drives the hinge rod to rotate like a crankshaft, causing the movable rod to slide to the right. The movable rod then seals the sealing ball and sealing groove, closing the end of the delivery pipe. Compared to existing valves, this invention simultaneously seals the end of the delivery pipe when the valve is closed, preventing material in the tank from clogging the delivery pipe and ensuring unobstructed nitrogen delivery.

[0013] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings.

[0014] The above and other objects, advantages and features of this application will become more apparent to those skilled in the art from the following detailed description of specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be drawn based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a structural diagram of the present invention when it is opened.

[0018] In the diagram: 1. Valve body; 2. Handle; 3. Rotating rod; 4. Hinge rod; 5. First fixed frame; 6. Movable rod; 7. Second fixed frame; 8. Sealing ball; 9. Sealing groove; 10. Flow chamber; 11. Delivery pipe; 12. Air outlet pipe; 13. Eccentric frame; 14. C-type valve core; 15. Air inlet pipe. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. In the following description, specific details such as specific configurations and components are provided merely to help fully understand the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. In addition, for clarity and brevity, descriptions of known functions and structures are omitted in the embodiments.

[0020] Furthermore, reference numerals and / or letters may be repeated in different examples within this application. Such repetition is for the purpose of simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed.

[0021] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another type of relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0022] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion.

[0023] Please see Figure 1-2 This utility model provides a technical solution for a nitrogen control valve for a protective atmosphere in a tank: it includes a valve body 1, with an inlet pipe 15 and an outlet pipe 12 installed on both sides of the valve body 1, and a delivery pipe 11 connected to the outlet pipe 12. A first fixed frame 5 and a second fixed frame 7 are fixedly connected inside the delivery pipe 11. A movable rod 6 is slidably connected to the first fixed frame 5 and the second fixed frame 7. A sealing ball 8 is fixedly connected to one end of the movable rod 6. A flow cavity 10 is provided at the end of the delivery pipe 11 away from the outlet pipe 12. A sealing groove 9 is provided on one side of the flow cavity 10. The sealing ball 8 is sealed to the sealing groove 9.

[0024] A rotating rod 3 is rotatably connected inside the valve body 1. A C-type valve core 14 is fixedly connected to the rotating rod 3. A sealing seat is provided on the side of the valve body 1 near the air inlet pipe 15. The C-type valve core 14 is detached from the sealing seat to deliver nitrogen. When the C-type valve core 14 is connected to the sealing seat, the valve is closed. The C-type valve core 14 is adapted to the sealing seat of the valve body 1. An eccentric frame 13 is fixedly connected to one side of the middle of the rotating rod 3. A hinge rod 4 is hinged to the eccentric frame 13. The hinge rod 4 is hinged to the other end of the movable rod 6. While the rotating rod rotates, the rotating rod 3 drives the hinge rod 4 to make crankshaft movement through the eccentric frame 13. The hinge rod 4 drives the movable rod 6 to slide left and right.

[0025] The inner diameter of the flow chamber 10 is larger than the diameter of the sealing ball 8. The surfaces of the first fixing frame 5 and the second fixing frame 7 are both provided with through holes for nitrogen flow.

[0026] In practical use, when opening the valve, the handle 2 drives the rotating rod 3 to rotate 90 degrees. At this time, the C-type valve core 14 rotates 90 degrees, disengaging from the sealing seat and allowing nitrogen to be delivered. Simultaneously, as the rotating rod 5 rotates 90 degrees, it drives the hinge rod 4 to perform crankshaft motion via the eccentric frame 13. The hinge rod 4 drives the movable rod 6 to slide to the left, causing the sealing ball 8 to disengage from the sealing groove 9, thus opening the end of the delivery pipe 11. Nitrogen flows through the gap between the flow chamber 10 and the sealing ball 8, enabling nitrogen delivery. When closing the valve, the handle... 2. The rotating rod 3 is driven to rotate 90 degrees in the opposite direction. At this time, the C-type valve core 14 rotates 90 degrees and seals with the sealing seat. While the rotating rod rotates 90 degrees, the rotating rod 3 drives the hinge rod 4 to make crankshaft movement through the eccentric frame 13. The hinge rod 4 drives the movable rod 6 to slide to the right. The movable rod 6 drives the sealing ball 8 and the sealing groove 9 to seal, thus completing the closure of the end of the conveying pipe 11. Compared with the existing valves, this utility model seals the end of the conveying pipe 11 at the same time when closing the valve, so as to avoid the material in the tank from blocking the conveying pipe, thereby maintaining the smooth flow of nitrogen.

[0027] The above description is merely a preferred embodiment of this utility model and does not limit the scope of protection of this utility model. For those skilled in the art, this utility model can have various modifications and variations. Any changes, modifications, substitutions, integrations, and parameter alterations made to these embodiments within the spirit and principles of this utility model, through conventional substitutions or methods that achieve the same function without departing from the principles and spirit of this utility model, fall within the scope of protection of this utility model.

Claims

1. A nitrogen control valve for a tank protective atmosphere, characterized in that: The valve includes a valve body (1), on which an air inlet pipe (15) and an air outlet pipe (12) are respectively installed on both sides. The air outlet pipe (12) is connected to a delivery pipe (11). The delivery pipe (11) is fixedly connected to a first fixing frame (5) and a second fixing frame (7). The first fixing frame (5) and the second fixing frame (7) are slidably connected to a movable rod (6). One end of the movable rod (6) is fixedly connected to a sealing ball (8). A flow cavity (10) is provided at the end of the delivery pipe (11) away from the air outlet pipe (12). A sealing groove (9) is provided on one side of the flow cavity (10). The sealing ball (8) is sealed to the sealing groove (9).

2. The nitrogen control valve for tank protective atmosphere as described in claim 1, characterized in that: The valve body (1) is rotatably connected to a rotating rod (3), and the rotating rod (3) is fixedly connected to a C-type valve core (14). A sealing seat is provided on the side of the valve body (1) near the air inlet pipe (15), and the C-type valve core (14) is adapted to the sealing seat of the valve body (1).

3. The nitrogen control valve for tank protective atmosphere as described in claim 2, characterized in that: An eccentric frame (13) is fixedly connected to one side of the middle part of the rotating rod (3). The eccentric frame (13) is hinged to a hinge rod (4). The hinge rod (4) is hinged to the other end of the movable rod (6).

4. The nitrogen control valve for tank protective atmosphere as described in claim 3, characterized in that: The inner diameter of the flow cavity (10) is larger than the diameter of the sealing ball (8), and the surfaces of the first fixing frame (5) and the second fixing frame (7) are both provided with through holes.

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