A valve

Abstract

The utility model belongs to valve technical field discloses a valve, including valve body, valve seat, lock cap and valve rod, valve body is connected with valve seat, valve rod is installed in valve seat, and the both sides of valve body form connecting port, and the lock cap is connected with valve body through connecting port. The utility model discloses a split type valve body and the joint lock cap clamping structure are adopted, avoid using traditional winding sealing raw material belt and drop adding sealant, and the installation process is simple. The joint structure of valve body and connecting port makes valve body can rotate freely when installing, can adjust the direction of valve body according to need, thereby avoiding the collision with wall or other fixed object. The inner support structure is designed through gradually expanding inner diameter, strengthens the support force of connecting part, disperses the pressure, and alleviates the phenomenon of uneven stress.

Description

Technical Field

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

[0002] Valves are crucial components in automatic control systems, enabling the regulation and control of fluid process parameters (such as flow rate, pressure, temperature, and liquid level). They are typically installed in piping systems and used as on / off or throttling control devices. Their basic function is to precisely control the flow rate of the medium by changing the flow area between the valve core and the valve seat, thereby meeting the system's dynamic response requirements to process parameters.

[0003] Valves are classified in various ways. Based on the actuation method, they can be divided into manual control valves, electric control valves, pneumatic control valves, and hydraulic control valves. Based on the valve core structure, they can be divided into various structural forms such as straight-through single-seat, straight-through double-seat, angle, butterfly, ball, sleeve, and three-way control valves. Among them, manual control valves are widely used in small and medium-sized industrial fluid control systems and civil water supply and drainage systems due to their simple structure, low cost, and suitability for infrequent adjustment conditions.

[0004] Gate valve-type control valves use a valve stem to drive the valve disc (or valve core) up and down, controlling the flow area through its interaction with the valve seat. They offer good throttling characteristics and are suitable for applications requiring high control precision. Ball valve-type control valves use the rotation of a ball to control the opening and closing of the flow path. They have a simple structure and are suitable for rapid opening and closing, but their control linearity is not as good as gate valves. Butterfly valve-type control valves regulate flow through the rotation of a valve plate, suitable for large-diameter, low-pressure-differential applications, but their control precision and sealing performance are relatively poor.

[0005] Although existing valves have formed a certain technical system in practical applications, they still suffer from complex structures and difficult assembly. Most existing valves have integral internal threads at both ends, and the valves are often installed along walls. Installation involves rotating the valve body, but due to the valve's height, it may encounter walls or other fixed objects, making installation inconvenient. In such cases, the handwheel, valve cover, and valve stem must be removed before the valve body can be rotated for installation. This installation method is prone to problems such as damaged or missing parts, or poor sealing leading to leaks. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides a valve that employs a split valve body and a snap-fit ​​structure with a union lock cap. The union lock cap connects to the built-in sealing gasket structure, reducing the need for wrapping sealing tape and applying sealant during installation, thus lowering the complexity of installation and maintenance. It also reduces the risk of leakage. During installation, the valve body can be freely rotated to avoid collisions with walls and fixed objects. Simply tightening the lock cap reduces assembly complexity.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0008] A valve includes a valve body, a locking cap, a valve seat, and a valve stem. The valve body is connected to the valve seat, and the valve stem is mounted on the valve seat. Connection ports are formed on both sides of the valve body, and the locking cap is connected to the valve body through the connection ports. By adopting the above technical solution, the connection ports and the locking cap are joined, allowing the valve body to rotate freely. The use of a split valve body and locking cap engagement structure eliminates the need for traditional wrapping of sealing tape and application of sealant during installation, reducing potential installation problems, simplifying operation steps, and improving work efficiency. The connection between the locking cap and the valve body is simple; only the locking cap needs to be tightened, avoiding the need for complex sealing materials in traditional installations. This reduces the technical requirements of installation and the complexity of maintenance, saving time and labor costs. The joint structure of the connection ports and the locking cap allows the valve body to rotate freely, enabling flexible adjustment of the valve body's installation direction and preventing collisions with walls or other fixed objects during installation, thus improving the valve's adaptability. It can adapt to the control requirements of different fluid media and maintain stable regulation performance even in high-pressure and complex fluid environments.

[0009] In a further configuration, a first protrusion is formed at one end of the lock cap, the lock cap is fitted onto the connection port, and a second protrusion is formed at the connection port. The first protrusion and the second protrusion engage with the groove behind them.

[0010] By adopting the above technical solution, the first protrusion at one end of the lock cap and the second protrusion at the connection port engage through a rear groove, forming a stable connection. The engagement structure of the protrusion and groove increases the tightness of the connection, reduces loosening of the connection points, and ensures the stability of the valve during long-term operation. The first protrusion of the lock cap is compressed by a clamping method and engages with the rear groove of the second protrusion at the connection port, enhancing the tightness and firmness of the connection between the lock cap and the valve body, reducing leakage problems caused by improper installation, and improving the valve's sealing performance and reliability. The clamping connection eliminates the need for additional tools or equipment during installation; simply placing the lock cap on the connection port and tightening it completes the connection. This not only simplifies the installation process but also reduces the risks associated with improper tool use. Because the lock cap can be easily rotated and fixed by clamping, it provides greater flexibility during valve body installation. The clamping design between the lock cap and the connection port allows installers to freely adjust the valve body's orientation, avoiding installation difficulties caused by fixed orientation issues.

[0011] Furthermore, the inner diameter of the connection port gradually increases from the inside out, forming an internal support structure.

[0012] By adopting the above technical solution, the internal support structure, through its gradually widening design within the connection port, enhances the support force between the valve body and the locking cap, thereby providing a more uniform pressure distribution. The gradually widening inner diameter reduces uneven stress on the connection port, ensuring stability and firmness of the connection even under high-pressure operating conditions. The internal support structure helps increase the contact area of ​​the connection, making the clamping force between the sealing surfaces more uniform, thus further improving the sealing effect. Through the internal support structure, the gradually widening inner diameter within the connection port disperses the stress area, reduces local stress concentration, and enhances the durability of the connection. Compared with traditional designs, the gradually widening inner diameter design effectively reduces material fatigue and damage caused by long-term pressure or temperature fluctuations, extending the valve's service life.

[0013] The internal support structure, by providing a gradually changing inner diameter, allows the connection points to bear pressure evenly, improving the valve's adaptability to high-pressure and high-temperature environments. The support force between the valve body and the locking cap is strengthened, enabling the valve to better maintain its structural stability under high pressure or extreme operating conditions.

[0014] Furthermore, the connection port is connected to the lock cap via bolts.

[0015] By adopting the above technical solution, connecting the connection port to the locking cap with bolts provides stronger tightening force. Bolted connections ensure a more secure bond between valve components, preventing loosening or leakage due to external vibration or fluid pressure fluctuations, thus improving the overall stability of the valve. Bolted connections also make the seal between the locking cap and the connection port more reliable. Precise bolt tightening ensures uniform pressure between the sealing surfaces, enhancing the sealing effect.

[0016] Furthermore, the locking cap is configured to have an internal thread.

[0017] In a further configuration, a handwheel is installed at the first end of the valve stem, and a valve core is connected to the second end of the valve stem.

[0018] By adopting the above technical solution, and installing a handwheel at the first end of the valve stem, users can more conveniently adjust the valve opening by manually rotating the handwheel. The handwheel design makes the adjustment process more precise, allowing for fine-tuning of the flow rate as needed, thereby achieving high-precision fluid control. Since the handwheel is directly connected to the valve stem, users can easily adjust the height of the valve core as needed, achieving fine flow regulation, suitable for applications requiring high adjustment accuracy. This structure makes the control valve suitable for controlling various fluid media, including liquids, gases, and fluids with different viscosities, and adaptable to the needs of different temperature and pressure environments. In high-temperature or high-pressure environments, the handwheel and valve stem maintain good sealing performance and operational stability. For equipment requiring long-term stable operation, the simple manual control structure better adapts to different operating conditions, expanding the valve's applicability. Because the second end of the valve stem is directly connected to the valve core, redundant connecting parts and complex operating structures are avoided, making the valve structure simpler, reducing the number of parts that need to be replaced during maintenance, and saving maintenance and replacement costs.

[0019] In a further configuration, the second end of the valve stem is formed with an external thread, and the valve core is formed with an internal thread, with the external thread and the internal thread engaging.

[0020] By adopting the above technical solution, the fit between the external and internal threads makes the connection between the valve stem and the valve core more precise. The rotational movement of the threads allows for precise adjustment of the valve core's position, achieving fine flow control. This precise fit ensures smooth movement of the valve core during adjustment, avoiding inaccurate adjustment caused by unstable connections or valve core misalignment, thus improving the response speed and accuracy of adjustment. The fit between the external and internal threads provides stronger mechanical support, reducing relative movement errors between the valve stem and valve core, and increasing the overall strength and stability of the valve. Especially in high-pressure or high-flow-rate operating environments, the threaded connection can effectively withstand greater loads, preventing valve loosening or failure. The strength of the threaded connection allows the valve to withstand higher operating pressures and larger temperature variations, improving the adaptability of the control valve. The fit between the external and internal threads effectively enhances the sealing performance between the valve core and the valve seat. Through this precise thread fit, the valve core can fit more tightly against the valve seat during adjustment, reducing the risk of fluid leakage.

[0021] As a further improvement, a sealing gasket is provided between the valve body and the valve seat.

[0022] By adopting the above technical solution, the sealing gasket improves the sealing performance between the valve body and the valve seat, preventing fluid leakage. As a functional component for buffering and sealing, the gasket can compensate for minor errors or unevenness between the valve body and the valve seat, and the seal can be freely adjusted to ensure no fluid leakage during operation. In high-pressure or high-temperature environments, the gasket can withstand a large internal and external pressure difference, providing a more reliable sealing effect and ensuring stable system operation. By placing a gasket between the valve body and the valve seat, potential safety risks caused by leakage can be reduced. The gasket prevents gas, liquid, or other fluids from leaking into the external environment, avoiding adverse effects on operators or equipment and improving system safety.

[0023] As a further feature, a first sealing ring is provided at the protrusion of the connection port.

[0024] By adopting the above technical solution, a first sealing ring is installed at the boss of the connection port, which increases the sealing performance between the valve body and the pipeline. The sealing ring forms a strong sealing barrier between the valve body and the connecting pipeline, preventing fluid leakage. The first sealing ring prevents micro-gaps caused by incomplete mating of the connection port surfaces, thus avoiding leakage. Preventing fluid leakage not only improves system safety but also reduces the risk of environmental pollution, energy loss, or equipment failure caused by leakage. The sealing ring improves the stability of the connection port, reducing loosening or displacement of connecting parts caused by external vibration or pressure fluctuations. With the assistance of the sealing ring, the pressure at the connection point is more uniform, preventing loosening or failure of the joint due to vibration or temperature changes.

[0025] As a further improvement, a second sealing ring is provided between the valve seat and the valve stem.

[0026] By adopting the above technical solution, a second sealing ring is installed between the valve seat and the valve stem, preventing fluid leakage through the contact area between the valve stem and the valve seat. The sealing ring compensates for the minute gaps between the valve stem and the valve seat, ensuring that fluid does not leak from these contact points during the operation of the control valve, greatly improving the valve's sealing performance. The second sealing ring prevents minor leaks at the connection between the valve seat and the valve stem. In systems involving toxic, corrosive, or high-pressure fluids, the sealing ring protects the safety of operators, equipment, and the environment. By reducing fluid leakage, not only is the operating environment safer, but fluid waste is also avoided, further improving system efficiency and sustainability.

[0027] In summary, this utility model has the following beneficial effects:

[0028] 1. This utility model adopts a split valve body and a snap-fit ​​structure with a union cap, avoiding the use of traditional wrapping sealing tape and applying sealant, simplifying the installation process. The union structure between the valve body and the connection port allows the valve body to rotate freely during installation, adjusting its direction as needed to prevent collisions with walls or other fixed objects. The internal support structure, with its gradually widening inner diameter design, enhances the support force at the connection point, distributes pressure, and reduces uneven stress. 2. This utility model employs an external and internal thread fit (between the valve stem and valve core) and a handwheel, making the adjustment process more precise and stable. The threaded fit allows the valve core to move precisely during adjustment, avoiding inaccurate adjustments caused by unstable connections or valve core misalignment. The handwheel design further improves user flexibility and precision during operation, suitable for applications requiring high-precision adjustment. Furthermore, the simplified structure reduces unnecessary components, resulting in stronger valve stability and fewer malfunctions over long-term use.

[0029] 3. The structural design of this utility model valve simplifies the installation and disassembly process, enabling maintenance personnel to quickly disassemble and replace parts, thus reducing maintenance costs. The design of the sealing ring and gasket also improves the valve's durability, reduces the need for frequent parts replacement, further lowers maintenance and replacement costs, and improves system operating efficiency. Attached Figure Description

[0030] Figure 1 This is a structural schematic diagram of Example 1;

[0031] Figure 2 This is a front view of Example 1;

[0032] Figure 3 This is a cross-sectional structural diagram of Example 1;

[0033] Figure 4 This is a front cross-sectional view of Example 1;

[0034] Figure 5 yes Figure 4 Enlarged view of point A in the middle

[0035] Figure 6 This is a cross-sectional structural diagram of Example 2;

[0036] Figure 7 This is a front cross-sectional view of Example 2.

[0037] The attached diagram shows the following reference numerals: 1. Valve body; 1-1. Connection port; 1-2. Sealing gasket; 1-3. First sealing ring; 1-4. Second boss; 2. Valve seat; 2-1. Second sealing ring; 3. Valve stem; 4. Lock cap; 4-1. First boss; 5. Handwheel; 6. Valve core. Detailed Implementation

[0038] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0039] like Figure 1-5 As shown in Embodiment 1, a valve includes a valve body 1, a locking cap 4, a valve seat 2, and a valve stem 3. The valve body 1 is connected to the valve seat 2, the valve stem 3 is installed on the valve seat 2, and connection ports 1-1 are formed on both sides of the valve body 1. The locking cap 4 is connected to the valve body 1 through the connection ports 1-1.

[0040] One end of the locking cap 4 forms a first protrusion 4-1, which is fitted onto the connecting port 1-1. The connecting port 1-1 forms a second protrusion 1-4, and the first protrusion 4-1 and the second protrusion 1-4 engage with a groove. The locking cap 4 has an internal thread. A handwheel 5 is installed at the first end of the valve stem 3, and the valve core 6 is connected to the second end of the valve stem 3. The second end of the valve stem 3 has an external thread, and the valve core 6 has an internal thread; the external and internal threads mate. A sealing gasket 1-2 is provided between the valve body 1 and the valve seat 2. A first sealing ring 1-3 is provided at the protrusion of the connecting port 1-1. A second sealing ring 2-1 is provided between the valve seat 2 and the valve stem 3.

[0041] The valve is connected to a handwheel 5 via the first end of the valve stem 3. When the handwheel 5 is operated, its rotation is transmitted through the valve stem 3 to the valve core 6, controlling the position of the valve core 6. The valve can regulate the fluid flow by controlling the position of the valve core 6.

[0042] The second end of the valve stem 3 is connected to the valve core 6. The valve core 6 moves within the valve seat 2. When the valve core 6 moves up or down, it controls the fluid flow through the passage of the valve seat 2, thereby changing the flow rate or pressure.

[0043] A sealing gasket 1-2 is provided between the valve body 1 and the valve seat 2 to ensure that no fluid leakage occurs during the adjustment process. In addition, a first sealing ring 1-3 is provided at the boss of the connection port 1-1 to ensure the sealing between the valve body 1 and the locking cap 4, while a second sealing ring 2-1 is provided between the valve seat 2 and the valve stem 3 to further ensure the sealing of the valve stem 3 movement and prevent fluid leakage.

[0044] The locking cap 4 is connected to the valve body 1 through the connection port 1-1. A boss engagement structure is formed at one end of the locking cap 4 and the connection port 1-1 to ensure a stable connection.

[0045] The second end of the valve stem 3 has an external thread, while the valve core 6 has an internal thread. The two threads engage to ensure the stable adjustment of the valve core's position. By rotating the valve stem 3, the engagement of the external and internal threads changes the vertical position of the valve core 6, thereby controlling the flow rate of fluid.

[0046] When the operator rotates handwheel 5, valve stem 3 rotates accordingly, causing valve core 6 to move longitudinally. Valve core 6 moves along valve seat 2, adjusting the size of the fluid passage.

[0047] The sealing gasket 1-2 between valve stem 3 and valve seat 2, and the sealing ring 2-1 between valve seat 2 and valve stem 3, serve to prevent fluid leakage and ensure that the flow of fluid during regulation only occurs in the area through which valve core 6 passes.

[0048] The fixed connection between the locking cap 4 and the connection port 1-1 ensures that the entire valve will not loosen or leak under high pressure or high flow, thus ensuring the long-term stability and reliability of the valve.

[0049] like Figure 6-7 As shown in Example 2, the difference from Example 1 is that the inner diameter of the connection port 1-1 gradually increases from the inside to the outside, forming an internal support structure. This internal support structure provides additional support at the connection port 1-1, enhancing the valve's adaptability to high pressure, high temperature, and different fluid media, ensuring the valve's long-term stability and reliability during operation.

[0050] Example 3 differs from Example 1 in that the connection port 1-1 is connected to the lock cap 4 by bolts. The bolts securing the connection port 1-1 to the lock cap 4 enhance the stability of the connection between the valve body and the lock cap.

[0051] The connection method between the connection port 1-1 and the valve body 1 of this utility model can be applied to all kinds of valves with internal threads, such as ball valves, gate valves, filters, check valves, pressure reducing valves, balancing valves, pipe fittings, etc.

[0052] The above-described embodiments are merely explanations of the present invention and are not intended to limit the present invention. After reading this specification, those skilled in the art can make modifications to the embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present invention.

Claims

1. A valve, comprising a valve body (1), a valve seat (2), a locking cap (4), and a valve stem (3), wherein the valve body (1) is connected to the valve seat (2), and the valve stem (3) is mounted on the valve seat (2), characterized in that, Connection ports (1-1) are formed on both sides of the valve body (1), and the lock cap (4) is connected to the valve body (1) through the connection ports (1-1); The lock cap (4) has a first protrusion (4-1) at one end, the lock cap (4) is sleeved on the connection port (1-1), the connection port (1-1) has a second protrusion (1-4), and the first protrusion (4-1) and the second protrusion (1-4) are engaged with the groove behind them; The inner diameter of the connection port (1-1) gradually increases from the inside to the outside, forming an inner support structure.

2. The valve according to claim 1, characterized in that, The connection port (1-1) is connected to the lock cap (4) by bolts.

3. The valve according to any one of claims 1-2, characterized in that, The lock cap (4) has an internal thread.

4. The valve according to claim 1, characterized in that, The valve stem (3) has a handwheel (5) installed at the first end and a valve core (6) connected at the second end.

5. The valve according to claim 4, characterized in that, The valve stem (3) has an external thread at its second end and the valve core (6) has an internal thread, with the external thread and internal thread engaging.

6. The valve according to claim 5, characterized in that, A sealing gasket (1-2) is provided between the valve body (1) and the valve seat (2).

7. The valve according to claim 6, characterized in that, A first sealing ring (1-3) is provided at the boss of the connection port (1-1).

8. The valve according to claim 6, characterized in that, A second sealing ring (2-1) is provided between the valve seat (2) and the valve stem (3).

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