Safety valve with pullable bonnet

Abstract

The application provides a safety valve with a movable bonnet, comprising a valve body, a valve disc, a valve rod and a bonnet; the valve disc is arranged in the valve body and is used for controlling the opening or closing of the safety valve; one end of the valve rod is connected with the valve disc and is located in the valve body, and the valve rod drives the valve disc to open or close the safety valve; the bonnet is movably arranged at one end of the valve body, one end of the bonnet is connected with the other end of the valve body, and the bonnet drives the valve rod to move in the valve body; a friction part is arranged on the outer peripheral wall of the bonnet and is used for increasing the friction when the bonnet is pulled. The bonnet is movably arranged at one end of the valve body and can drive the valve rod to move in the valve body, when the safety valve is blocked by garbage or needs to be pulled for a long time, and is located in a specific space, the friction part facilitates the staff to pull the bonnet to drive the valve rod and drive the valve disc to move, so that the function of the safety valve is realized, the reliability and flexibility of the operation of the safety valve are improved, and the safety valve is convenient to maintain and debug.

Description

Technical Field

[0001] This application relates to the field of safety valves, and more specifically, to a safety valve that utilizes a liftable valve cap. Background Technology

[0002] Safety valves are widely used in modern manufacturing engineering technology. Their main function is to prevent dangerous situations such as explosions or leaks caused by excessive pressure inside equipment or containers.

[0003] As safety valve technology is increasingly applied across various industries, the performance of traditional safety valves is constantly improving, making it imperative to develop new safety valve products that meet market demands.

[0004] Currently, commonly used safety valves with wrench mechanisms have a problem: sometimes the safety valve gets stuck on the sealing surface or has not been opened for a long time, requiring the wrench to be pulled to ensure the performance of the safety valve. However, most safety valves are threaded connections, and the direction of the wrench cannot be determined. In some specific spaces, it is inconvenient to pull the wrench. Utility Model Content

[0005] In view of one of the defects in the prior art, the purpose of this application is to provide a safety valve that can be pulled up using a valve cap.

[0006] A first aspect of this application provides a safety valve that is liftable by a valve cap, comprising: a valve body, a valve disc, a valve stem, and a valve cap;

[0007] The valve disc is disposed in the valve body and is used to control the opening or closing of the safety valve;

[0008] One end of the valve stem is connected to the valve disc and is located in the valve body. The valve stem drives the valve disc to open or close the safety valve.

[0009] The valve cap is movably disposed at one end of the valve body, and one end of the valve cap is connected to the other end of the valve body. The valve cap drives the valve stem to move within the valve body.

[0010] The outer peripheral wall of the valve cap is provided with a friction part to increase the friction force when the valve cap is pulled.

[0011] Optionally, it also includes a limiting member, wherein one end of the valve cap is connected to the other end of the valve body through the limiting member;

[0012] The valve cap has a hollow interior, and the limiting member is located inside the valve cap and is movable within the valve cap.

[0013] Optionally, the valve cap is provided with an opening at the end where it connects to the valve body;

[0014] The other end of the valve stem extends into the valve cap through the opening and is connected to the limiting member. When the valve cap moves, the limiting member drives the valve stem to move.

[0015] Optionally, a gasket is also included, disposed between the limiting member and the valve stem, to prevent the limiting member from directly contacting the inner wall of the valve cap;

[0016] The limiting component is a nut, located inside the valve cap, and threadedly connected to the other end of the valve stem.

[0017] Optionally, a groove is provided at the connection between the valve cap and the valve body, and a sealing ring is provided in the groove for sealing the valve body.

[0018] Optionally, the valve cap includes a sealing cap disposed at the other end of the valve cap for opening or closing the valve cap.

[0019] Optionally, the friction part is knurled.

[0020] Optionally, the valve may also include a spring, which is sleeved on the valve stem and located within the valve body. One end of the spring abuts against the valve disc, and the valve disc controls the opening and closing of the safety valve by the compression and expansion of the spring.

[0021] Optionally, it also includes an adjusting part, wherein the adjusting part is provided with a limiting hole in the middle, the adjusting part is sleeved on the valve stem through the limiting hole, and the adjusting part is movably disposed in the valve body;

[0022] The other end of the spring abuts against the adjusting part to limit the movement of the spring within the valve body and to adjust the tension of the spring.

[0023] Optionally, the valve body has an internal thread on its inner wall and the adjusting part has an external thread. The adjusting part is connected to the valve body through the internal thread and the external thread, and the adjusting part adjusts its position within the valve body through the internal thread and the external thread.

[0024] This application provides a safety valve with a liftable valve cap. The valve cap is connected to a valve stem within the valve body at one end. By movably mounting the valve cap at one end of the valve body and enabling the valve stem to move within the valve body, when the safety valve is stuck or has not been opened for a long time and needs to be lifted to maintain performance, lifting the valve cap moves the valve stem, which in turn moves the valve disc, thus realizing the safety valve function. Simultaneously, a friction element is provided on the valve cap. When operating in a confined space, the friction element increases friction, allowing the operator to pull the valve cap more steadily and effortlessly, even in situations where space is limited and full force is difficult. This facilitates control of the safety valve, ensuring accurate and timely opening or closing when needed, and guaranteeing the safe and stable operation of the system.

[0025] Other technical effects resulting from the additional features will be further illustrated in the corresponding embodiments. Attached Figure Description

[0026] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0027] Figure 1 This is a structural diagram of a safety valve with a liftable valve cap, according to an exemplary embodiment.

[0028] Figure 2 This is a cross-sectional view of a safety valve that can be pulled up using a valve cap, according to an exemplary embodiment.

[0029] In the diagram: 1. Valve body; 2. Valve disc; 3. Spring; 4. Adjustment part; 41. Limiting hole; 5. Valve stem; 6. Valve cap; 61. Opening; 62. Groove; 63. Sealing ring; 64. Sealing cover; 7. Friction part; 8. Limiting element; 9. Gasket. Detailed Implementation

[0030] The present application will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present application, but do not limit the present application in any way. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all fall within the protection scope of the present application. Parts not described in detail in the following embodiments can be implemented using existing technology.

[0031] In the description of the embodiments of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0033] In the description of the embodiments in this application, "multiple" means two or more, unless otherwise explicitly specified. In this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., 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 application according to the specific circumstances.

[0034] The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such processes, methods, products, or devices.

[0035] In existing technologies, when a safety valve is clogged with debris or has not been opened for a long time and requires a lifting operation to ensure performance, the wrench is difficult to pull in a specific space due to the uncertain direction of the wrench. To address these issues, this application provides a safety valve with a liftable valve cap to solve these problems.

[0036] Reference Figure 1 , Figure 2 As shown in one embodiment of this application, a safety valve that can be pulled up using a valve cap includes: a valve body 1, a valve disc 2, a valve stem 5, and a valve cap 6.

[0037] The valve disc 2 is located inside the valve body 1 and is used to control the opening or closing of the safety valve. One end of the valve stem 5 is connected to the valve disc 2 and is located inside the valve body 1. The valve stem 5 drives the valve disc 2 to open or close the safety valve. The valve cap 6 is movably located at one end of the valve body 1 and is connected to the other end of the valve body 1. The valve cap 6 drives the valve stem 5 to move inside the valve body 1. The outer peripheral wall of the valve cap 6 is provided with a friction part 7 to increase the friction when the valve cap 6 is pulled.

[0038] Specifically, a movable valve cap 6 is provided at one end of the valve body 1, and the valve cap 6 is connected to the valve stem 5. The valve stem 5 is connected to the valve disc 2. During operation, by lifting the valve cap 6, the valve stem 5 is moved within the valve body. The valve stem 5 drives the valve disc 2 to open or close the safety valve. By providing a friction part 7 on the outer peripheral wall of the valve cap 6, when it is necessary to lift in a specific space, the operator can increase the friction through the friction part 7, so that even when the space is limited and it is difficult to exert full force, the operator can pull the valve cap 6 more steadily and effortlessly.

[0039] In the above embodiments of this application, the valve cap 6 is movably disposed at one end of the valve body 1 and can drive the valve stem 5 to move within the valve body 1. When the sealing surface of the safety valve is clogged with debris or has not been opened for a long time and needs to be lifted to ensure performance, the valve cap 6 is lifted, which drives the valve stem 5. The valve stem 5 drives the valve disc 2 to move, thereby realizing the function of the safety valve. This allows for operation in a specific space, facilitating manual control of the safety valve by the operator. It ensures that the safety valve can be opened or closed accurately and promptly when needed, thus guaranteeing the safe and stable operation of the system.

[0040] Reference Figure 2 As shown, in order to achieve the purpose of the valve cap 6 driving the valve stem 5 to move, in some specific embodiments of this application, a limiting member 8 is also included. The limiting member 8 is connected to the other end of the valve stem 5 and is used to drive the valve stem 5 to move.

[0041] The valve cap 6 has a hollow interior. The limiting member 8 is located inside the valve cap 6. When the valve cap 6 moves, one end of the limiting member 8 abuts against the inner wall of the valve cap 6 and moves with the valve cap 6.

[0042] Specifically, the valve cap 6 is made into a hollow structure, and a limiting member 8 is set inside the valve cap 6. The limiting member 8 is connected to the other end of the valve stem 5. When the valve cap 6 moves, the limiting member 8 abuts against the bottom of the valve cap 6, and the limiting member 8 drives the valve stem 5 to move inside the valve body 1.

[0043] In the above embodiments of this application, a hollow structure is provided inside the valve cap 6 and a limiting member 8 is placed therein, so that the limiting member 8 is connected to the other end of the valve stem 5. When the valve cap 6 moves, the limiting member 8 abuts against the inner wall of the valve cap 6 to drive the valve stem 5 to move. This avoids direct connection between the valve stem 5 and the valve cap 6, simplifies the connection structure between the valve cap 6 and the valve stem 5, reduces manufacturing difficulty and cost, improves the smoothness and stability of the safety valve operation, extends the service life of the safety valve, and also provides convenience for the maintenance and repair of the safety valve.

[0044] In order to further realize the movement of valve cap 6 driving valve stem 5, in some specific embodiments of this application, valve cap 6 is provided with an opening 61 at one end connected to valve body 1; the other end of valve stem 5 extends into valve cap 6 through opening 61 and is connected to limiting member 8. When valve cap 6 moves, it drives valve stem 5 to move through limiting member 8.

[0045] In the above embodiment, by providing an opening 61 at one end of the valve cap 6, the other end of the valve stem 5 can be easily inserted into the opening 61 to connect with the limiting member 8, thereby better realizing the transmission connection between the valve cap 6 and the valve stem 5. The structure is compact and easy to assemble, and the valve cap 6 can stably drive the valve stem 5 to move through the limiting member 8 when it moves, which improves the reliability and flexibility of the safety valve operation and facilitates the maintenance and debugging of the safety valve.

[0046] Reference Figure 2 As shown, in some specific embodiments, a gasket 9 is also included, which is disposed between the limiting member 8 and the valve stem 5 to prevent the limiting member 8 from directly contacting the inner wall of the valve cap 6.

[0047] Among them, the limiting component 8 is a nut, located inside the valve cap 6, and threadedly connected to the other end of the valve stem 5.

[0048] The other end of the valve stem 5 is threaded to facilitate the connection between the limiting component 8 and the valve stem 5.

[0049] In the above embodiments of this application, by setting a gasket 9, friction and collision between the nut and the inner wall of the valve cap 6 are prevented during tightening or operation, reducing wear on the nut and valve cap 6, lowering the risk of metal debris generated by wear contaminating the medium inside the valve, and extending the service life of the nut and valve cap 6. At the same time, during the movement of the valve cap 6 driving the valve stem 5, the gasket 9 can play a buffering role, so that the tightening force of the nut on the valve stem 5 is transmitted more smoothly, reducing stress concentration that may be caused by direct contact, and ensuring the stability of the connection structure between the valve stem 5 and the nut.

[0050] In order to achieve the purpose of sealing the valve body 1 with the valve cap 6, in some specific embodiments of this application, a groove 62 is provided at the connection between the valve cap 6 and the valve body 1, and a sealing ring 63 is provided in the groove 62 for sealing the valve body 1.

[0051] In the above embodiments of this application, by providing a groove 62 and a sealing ring 63 at the connection between the valve cap 6 and the valve body 1, the sealing performance at the connection is enhanced. The valve cap 6 better seals the valve body 1 to ensure that the medium does not easily spray upwards, and also prevents foreign objects such as dust from entering the chamber of the safety valve and affecting the performance of the safety valve, thereby improving the service life of the safety valve.

[0052] In some specific embodiments of this application, the valve cap 6 includes a sealing cover 64 disposed at the other end of the valve cap 6 for opening or closing the valve cap 6.

[0053] Specifically, the valve cap 6 has a hollow structure. By setting a sealing cap 64 at the other end of the valve cap 6, the valve cap 6 is sealed, protecting the limiting component 8 inside the valve cap 6, avoiding pollution and corrosion of the limiting component 8 due to long-term use, and improving the service life of the safety valve.

[0054] In order to better lift the valve cap 6, in some specific embodiments of this application, the friction part 7 is knurled.

[0055] In the above embodiments of this application, by providing a friction part 7 on the outer peripheral wall of the valve cap 6, when it is necessary to lift in a specific space, the operator increases the friction force through the friction part 7, so that even when the space is limited and it is difficult to exert full force, the operator can pull the valve cap 6 more steadily and effortlessly. It can be used in 360° and is more practical in a specific space.

[0056] In some specific embodiments of this application, the safety valve further includes a spring 3, which is sleeved on the valve stem 5 and located inside the valve body 1. One end of the spring 3 abuts against the valve disc 2, and the valve disc 2 controls the opening and closing of the safety valve by the compression and expansion of the spring 3.

[0057] In some specific embodiments of this application, the safety valve further includes an adjusting part 4, the adjusting part 4 having a limiting hole 41 in the middle, the adjusting part 4 being sleeved on the valve stem 5 through the limiting hole 41, and the adjusting part 4 being movably disposed inside the valve body 1; the other end of the spring 3 abuts against the adjusting part 4, which is used to limit the movement of the spring 3 inside the valve body 1, and at the same time adjust the tension of the spring 3.

[0058] Specifically, valve body 1 is the main part of the safety valve, and its internal design is related to the medium flow rate; spring 3 is the source of force for opening the safety valve, and its tension can be adjusted by adjusting part 4; valve disc 2 is the moving part of the safety valve, and the opening and closing of the valve is controlled by the compression and expansion of spring 3; adjusting part 4 is a component used to adjust the force of spring 3, and the tension of spring 3 is changed by adjusting its position; valve cap 6 ensures that the medium does not easily spray upwards, and also prevents foreign objects such as dust from entering the chamber and affecting the performance of the safety valve. At the same time, valve cap 6 drives valve stem 5, and valve stem 5 drives valve disc 2 to lift upwards. Valve stem 5 also has the function of ensuring the vertical lifting and lowering of valve disc 2, which makes it convenient for customers to lift the safety valve in specific spaces (it can be used in 360°), and can also be designed to be smaller and reduce costs. Vertically pulling the safety valve disc 2 increases the life of the safety valve disc 2 and further ensures the performance of the safety valve, meeting market demands.

[0059] In some specific embodiments of this application, the inner wall of the valve body 1 is provided with an internal thread, and the adjusting part 4 is provided with an external thread. The adjusting part 4 is connected to the valve body 1 through the internal thread and the external thread, and the position of the adjusting part 4 inside the valve body 1 is adjusted through the internal thread and the external thread.

[0060] The adjusting part 4 can be an adjusting screw. Of course, in other embodiments, it can also be other adjusting parts with threads.

[0061] Specifically, an internal thread structure is pre-machined on the inner wall of the valve body 1, and a corresponding external thread structure is machined on the adjusting part 4. During installation, the end of the adjusting part 4 with the external thread is aligned with the part of the valve body 1 with the internal thread. By rotating the adjusting part 4, the threaded engagement between the internal and external threads allows the adjusting part 4 to move relative to the valve body 1 along the axial direction, thereby adjusting the position of the adjusting part 4 within the valve body 1.

[0062] In the above embodiments of this application, by providing internal threads on the inner wall of the valve body 1 and external threads on the adjusting part 4, the design of the adjusting part 4 being movable within the valve body 1 is realized. This ensures that the adjusting part 4 is stably fixed after being moved to the designated position and will not easily displace due to external forces. This guarantees the stability and reliability of the spring 3 structure inside the safety valve, realizes the adjustment of the tension of the spring 3, and increases the applicability of the safety valve.

[0063] The preferred features in the above embodiments can be used individually in any embodiment, or in any combination thereof, provided they do not conflict with each other. Furthermore, parts not described in detail in the embodiments can be implemented using existing technologies.

[0064] The foregoing has described some specific embodiments of this application. It should be understood that this application is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the substantive content of this application. The above-described preferred features can be used in any combination without conflict.

Claims

1. A safety valve with a liftable valve cap, characterized in that, include: Valve body, valve disc, valve stem, and valve cap; The valve disc is disposed in the valve body and is used to control the opening or closing of the safety valve; One end of the valve stem is connected to the valve disc and is located in the valve body. The valve stem drives the valve disc to open or close the safety valve. The valve cap is movably disposed at one end of the valve body, and one end of the valve cap is connected to the other end of the valve body. The valve cap drives the valve stem to move within the valve body. The outer peripheral wall of the valve cap is provided with a friction part to increase the friction force when the valve cap is pulled.

2. A safety valve with a liftable valve cap according to claim 1, characterized in that, It also includes a limiting component, which is connected to the other end of the valve stem and is used to drive the valve stem to move; The valve cap has a hollow interior, and the limiting member is located inside the valve cap. When the valve cap moves, one end of the limiting member abuts against the inner wall of the valve cap and moves with the valve cap.

3. A safety valve with a liftable valve cap according to claim 2, characterized in that, The valve cap is provided with an opening at the end where it is connected to the valve body; The other end of the valve stem extends into the valve cap through the opening and is connected to the limiting member. When the valve cap moves, the limiting member drives the valve stem to move.

4. A safety valve with a liftable valve cap according to claim 3, characterized in that, It also includes a gasket disposed between the limiting member and the valve stem to prevent the limiting member from directly contacting the inner wall of the valve cap; The limiting component is a nut, located inside the valve cap, and threadedly connected to the other end of the valve stem.

5. A safety valve with a liftable valve cap according to claim 2, characterized in that, The valve cap is provided with a groove at the connection between it and the valve body, and a sealing ring is provided in the groove to seal the valve body.

6. A safety valve with a liftable valve cap according to claim 5, characterized in that, The valve cap includes a sealing cap disposed at the other end of the valve cap for opening or closing the valve cap.

7. A safety valve with a liftable valve cap according to claim 1, characterized in that, The friction part is knurled.

8. A safety valve with a liftable valve cap according to claim 1, characterized in that, It also includes a spring, which is sleeved on the valve stem and located in the valve body. One end of the spring abuts against the valve disc, and the valve disc controls the opening and closing of the safety valve by the compression and expansion of the spring.

9. A safety valve with a liftable valve cap according to claim 8, characterized in that, It also includes an adjustment part, which has a limiting hole in the middle. The adjustment part is sleeved on the valve stem through the limiting hole and is movably disposed in the valve body. The other end of the spring abuts against the adjusting part to limit the movement of the spring within the valve body and to adjust the tension of the spring.

10. A safety valve with a liftable valve cap according to claim 9, characterized in that, The valve body has an internal thread on its inner wall and an external thread on its adjusting part. The adjusting part is connected to the valve body through the internal thread and the external thread, and the adjusting part is adjusted to its position within the valve body through the internal thread and the external thread. The adjusting part is an adjusting screw.

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