Pressure-resistant instrument valve

Abstract

The utility model discloses a pressure-resistant instrument valve which comprises a valve body, one end of the valve body is provided with a fixing pipe, the surface of the fixing pipe is provided with a second nut, the other end of the valve body is provided with a side cover, the side cover is in threaded connection with the valve body, the side face of the side cover is provided with a connecting column, and the surface of the connecting column is provided with a first nut. A valve seat is arranged in the center of the interior of the valve body, and a valve ball is arranged in the valve seat. The handle is rotated to drive the valve rod to rotate, so that the valve rod drives the valve ball to rotate, the size of an inner hole of the valve ball is controlled, flow control and opening and closing are achieved, the ball seat is arranged at the bottom of the valve ball, the ball groove is formed in the ball seat, the ball groove and the bottom of the valve ball are mutually embedded, and the valve ball can be effectively supported through the arrangement; and rotation of the valve ball cannot be affected, the stability of the valve ball is improved, and meanwhile the pressure resistance of the valve ball is improved.

Description

Technical Field

[0001] This utility model relates to the field of angle three-port valve technology, and more specifically to a pressure-resistant instrument valve. Background Technology

[0002] Instrument valves play a crucial role in industrial automation and control systems. They are designed to precisely regulate, control, and monitor the flow of fluids (such as gases and liquids) in piping systems. The core function of an instrument valve lies in its ability to precisely control fluid flow. This is thanks to its sophisticated internal valve core and seat design, as well as its matching actuation mechanism. By adjusting the position of the valve core, instrument valves can flexibly open, close, or partially open pipelines, thereby achieving precise regulation of fluid flow rate, pressure, or temperature.

[0003] In existing instrument ball valves, the internal ball is connected to the valve stem at the top and to the valve seat at the bottom, but there is a certain gap between the ball and the valve seat, causing the ball to be suspended and resulting in poor pressure resistance. Therefore, a new technical solution is needed to address this issue. Utility Model Content

[0004] The purpose of this utility model is to provide a pressure-resistant instrument valve that solves the problem that in existing instrument ball valves, the upper part of the internal valve ball is connected to the valve stem and the lower part is connected to the valve seat, but there is a certain gap between the internal valve ball and the valve seat, which causes the valve ball to be suspended and has poor pressure resistance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure-resistant instrument valve, comprising: a valve body, a fixing pipe at one end of the valve body with a second nut on its surface, a side cover at the other end of the valve body with a threaded connection between the side cover and the valve body, a connecting post on the side of the side cover with a first nut on its surface, a valve seat at the center of the valve body with a valve ball inside the valve seat, an inner hole inside the valve ball communicating with the flow channels of the valve body and the side cover, a valve stem at the upper part of the valve ball extending to the outside of the valve body, a screw at the upper part of the valve stem with a fixed connection between the screw and the valve stem, a handle at the upper part of the screw with a nut inside the handle with a threaded connection between the nut and the screw, and a ball seat at the bottom of the valve ball with a ball groove inside the ball seat, the ball groove fitting into the bottom of the valve ball.

[0006] In a preferred embodiment of this utility model, a first washer and a second washer are respectively provided on the upper and lower sides of the connection between the screw and the handle, and both the first washer and the second washer are sleeved on the surface of the screw.

[0007] In a preferred embodiment of this utility model, a sealing packing is provided at the connection between the valve stem and the valve body.

[0008] In a preferred embodiment of the present invention, the ball seat is provided with a fixed seat inside, and the fixed seat is provided with an elastic element inside. The upper part of the elastic element is provided with a push rod, and the push rod is in contact with the bottom of the valve ball.

[0009] In a preferred embodiment of this utility model, a sealing ring is provided at the threaded connection between the side cover and the valve body, and the sealing ring is sleeved on the surface of the side cover.

[0010] In a preferred embodiment of this utility model, the lower part of the valve stem is provided with a locking block and the inside of the valve ball is provided with a locking groove, and the locking block and the locking groove are interlocked.

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

[0012] This invention features a fixing tube at one end of the valve body, with a second nut on its surface. A side cover is located at the other end of the valve body, threadedly connected to the valve body. A connecting post is located on the side of the side cover, with a first nut on its surface. A valve seat is located at the center of the valve body, containing a valve ball. The valve ball has an inner hole that communicates with the flow channels of the valve body and the side cover. A valve stem extends from the upper part of the valve ball to the outside of the valve body. A screw is located on the upper part of the valve stem, and the screw is connected to the valve stem... The valve is fixedly connected to the screw rod. A handle is located on the upper part of the screw rod, and a nut is installed inside the handle. The nut is threaded to the screw rod to fix the handle. By rotating the handle, the valve rod rotates, which in turn rotates the valve ball, thereby controlling the size of the valve ball's inner hole to achieve flow control and on / off. A ball seat is located at the bottom of the valve ball, and a ball groove is installed inside the ball seat. The ball groove and the bottom of the valve ball are interlocked. This design can effectively support the valve ball without affecting its rotation, thus improving the stability and pressure resistance of the valve ball. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal cross-sectional structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the ball seat and valve ball structure of this utility model.

[0016] In the diagram: 1. Valve body; 2. Handle; 3. Nut; 4. Screw; 5. First gasket; 6. Second gasket; 7. Sealing packing; 8. Valve stem; 9. Locking block; 10. Valve ball; 11. Inner hole; 12. Ball seat; 13. Valve seat; 14. Side cover; 15. Connecting column; 16. First nut; 17. Fixing tube; 18. Second nut; 19. Locking groove; 20. Ball groove; 21. Fixing seat; 22. Push rod; 23. Elastic element; 24. Sealing ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-3This utility model provides a technical solution: a pressure-resistant instrument valve, comprising: a valve body 1, one end of which is provided with a fixing pipe 17 and a second nut 18 is provided on the surface of the fixing pipe 17; the other end of the valve body 1 is provided with a side cover 14 and the side cover 14 is threadedly connected to the valve body 1; a connecting post 15 is provided on the side of the side cover 14 and a first nut 16 is provided on the surface of the connecting post 15; a valve seat 13 is provided at the center of the valve body 1 and a valve ball 10 is provided inside the valve seat 13; the valve ball 10 has an inner hole 11 inside and the inner hole 11 is connected to the valve body 1 and the side cover 18. The flow channels of valves 4 are interconnected. A valve stem 8 is provided on the upper part of the valve ball 10, extending to the outside of the valve body 1. A screw 4 is provided on the upper part of the valve stem 8, and the screw 4 is fixedly connected to the valve stem 8. A handle 2 is provided on the upper part of the screw 4, and a nut 3 is provided inside the handle 2. The nut 3 is threadedly connected to the screw 4. A ball seat 12 is provided at the bottom of the valve ball 10, and a ball groove 20 is provided inside the ball seat 12. The ball groove 20 fits into the bottom of the valve ball 10. A fixing tube 17 is provided at one end of the valve body 1, and a second nut 18 is provided on the surface of the fixing tube 17. The other end of valve body 1 is provided with a side cover 14, which is threadedly connected to valve body 1. A connecting post 15 is provided on the side of the side cover 14, and a first nut 16 is provided on the surface of the connecting post 15. A valve seat 13 is provided at the center of the valve body 1, and a valve ball 10 is provided inside the valve seat 13. The valve ball 10 has an inner hole 11, which is connected to the flow channel of valve body 1 and side cover 14. A valve stem 8 is provided on the upper part of the valve ball 10, and the valve stem 8 extends to the outside of valve body 1. A screw 4 is provided on the upper part of the valve stem 8, and the screw 4 is fixedly connected to the valve stem 8. A screw is provided on the upper part of the screw 4. The handle 2 has a nut 3 inside, which is threadedly connected to the screw 4 to fix the handle 2. By rotating the handle 2, the valve stem 8 is rotated, which in turn rotates the valve ball 10, thereby controlling the size of the inner hole 11 of the valve ball 10 and realizing flow control and switching. A ball seat 12 is provided at the bottom of the valve ball 10, and a ball groove 20 is provided inside the ball seat 12. The ball groove 20 is interlocked with the bottom of the valve ball 10. This setting can effectively support the valve ball 10 without affecting the rotation of the valve ball 10, improving the stability of the valve ball 10 and the pressure resistance of the valve ball 10.

[0019] Further improvements, such as Figure 2 As shown: A first washer 5 and a second washer 6 are respectively provided on the upper and lower sides of the connection between the screw 4 and the handle 2. The first washer 5 and the second washer 6 are both sleeved on the surface of the screw 4. This arrangement can increase the connection stability between the screw 4 and the handle 2, prevent the screw 4 and the handle 2 from loosening due to long-term operation or vibration, thereby improving the overall durability and reliability of the valve.

[0020] Further improvements, such as Figure 2 As shown: A sealing packing 7 is provided at the connection between the valve stem 8 and the valve body 1. The sealing packing 7 can effectively prevent fluid from leaking from the connection between the valve stem 8 and the valve body 1, improve the sealing performance of the valve, and ensure the accuracy and stability of fluid control.

[0021] Further improvements, such as Figure 3 As shown: The ball seat 12 is provided with a fixed seat 21 inside, and the fixed seat 21 is provided with an elastic element 23 inside. The upper part of the elastic element 23 is provided with a push rod 22, and the push rod 22 is in contact with the bottom of the valve ball 10. This design provides additional support and buffer for the valve ball 10 through the elastic element 23 and the push rod 22, reducing the wear and impact of the valve ball 10 during rotation, and further enhancing the stability and pressure resistance of the valve ball 10.

[0022] Further improvements, such as Figure 2 As shown: A sealing ring 24 is provided at the threaded connection between the side cover 14 and the valve body 1, and the sealing ring 24 is sleeved on the surface of the side cover 14. The sealing ring 24 can ensure that the threaded connection between the side cover 14 and the valve body 1 is tight and leak-free, improve the overall sealing performance and pressure resistance of the valve, and prevent fluid leakage.

[0023] Further improvements, such as Figure 2 , 3 As shown: The lower part of the valve stem 8 is provided with a locking block 9 and the inside of the valve ball 10 is provided with a locking groove 19. The locking block 9 and the locking groove 19 are interlocked. This design achieves a firm connection between the valve stem 8 and the valve ball 10 through the interlocking of the locking block 9 and the locking groove 19, preventing the valve ball 10 from falling off or shifting during rotation.

[0024] Furthermore, a description of the innovative aspects and substantial technical effects of this solution.

[0025] Innovation: A ball seat 12 is provided at the bottom of the valve ball 10, and a ball groove 20 is provided inside the ball seat 12 to fit into the bottom of the valve ball 10.

[0026] Technical effect: It provides effective support for the valve ball 10, prevents the valve ball from being suspended, reduces the offset of the valve ball 10 under high pressure by about 20%, and significantly improves its stability and pressure resistance.

[0027] Innovation: The ball seat 12 is equipped with a fixed seat 21, an elastic element 23 and a push rod 22, and the push rod 22 contacts the bottom of the valve ball 10.

[0028] Technical effect: The buffering effect of the elastic element 23 reduces the wear of the valve ball 10 during rotation, reducing the wear rate of the valve ball 10 surface by about 15% and extending the service life of the valve.

[0029] Innovation: A sealing packing 7 is provided at the connection between the valve stem 8 and the valve body 1, and a sealing ring 24 is provided at the threaded connection between the side cover 14 and the valve body 1.

[0030] Technical effect: Enhances the overall sealing performance of the valve, reducing fluid leakage from 10ml / min to 7ml / min, a reduction of 30%.

[0031] Innovation: A retaining block 9 is set at the lower part of the valve stem 8, and a retaining groove 19 is set inside the valve ball 10, and the two fit together.

[0032] Technical effect: Ensures a secure connection between the valve stem 8 and the valve ball 10, preventing the valve ball 10 from falling off or shifting during rotation, thus improving connection stability by approximately 25%.

[0033] Specifically, a comparison of relevant test data and practical application data for this solution.

[0034] Test Project Existing technology valves This utility model valve Increase Pressure resistance (MPa) 5.0 5.5 10％ Valve ball offset (mm) 0.5 0.4 20％ Leakage rate (ml / min) 10 7 30％

[0035] Data Description

[0036] Pressure resistance performance: Under the same medium (water) and temperature (25℃) conditions, the pressure is gradually increased until the valve fails. The upper limit of the pressure resistance of the valve of this utility model is 0.5MPa higher than that of the prior art, indicating that it can withstand higher pressure.

[0037] Valve ball offset: The radial offset of the valve ball 10 under 1MPa pressure is measured by a high-precision displacement sensor. Due to the support of the ball seat 12 and the ball groove 20, the offset is reduced by 0.1mm, and the stability is significantly improved.

[0038] Leakage: Under a pressure of 1 MPa, the fluid leakage at the valve seal is measured per unit time. This invention reduces leakage by 3 ml / min through the design of the sealing packing 7 and the sealing ring 24, resulting in better sealing performance.

[0039] Data Validity Statement

[0040] The experiment was conducted in a standard laboratory environment, using piping systems and testing equipment of the same specifications to ensure consistent testing conditions.

[0041] Each set of data was tested 5 times, and the average value was taken to reduce the error. The data fluctuation range was less than 5%, which shows that the data is reliable.

[0042] The test medium, pressure, temperature and other parameters all conform to the conventional application scenarios of industrial instrument valves, and the test results can effectively reflect the actual use effect.

[0043] Working principle: The operator rotates handle 2, which drives screw 4 to rotate via the threaded connection between nut 3 and screw 4. Screw 4 is fixedly connected to valve stem 8, so the rotation of screw 4 further drives valve stem 8 to rotate. This step realizes the torque transmission from handle 2 to valve stem 8, providing the power source for the rotation of valve ball 10. The lower part of valve stem 8 is connected to valve ball 10. When valve stem 8 rotates, it drives valve ball 10 to rotate inside valve seat 13. Valve ball 10 has an inner hole 11, which is connected to the flow channel of valve body 1 and side cover 14. The rotation of valve ball 10 changes the relative position between inner hole 11 and flow channel, thereby realizing precise control of fluid flow. When valve ball 10 rotates to a specific position, inner hole 11 is completely aligned with flow channel, and fluid can pass smoothly through the valve; when valve ball 10 rotates to another specific position, inner hole 11 is completely aligned with flow channel. When the valve is blocked, the fluid cannot pass through. By controlling the rotation angle of the valve ball 10, precise control of the fluid flow and valve opening / closing can be achieved. This step realizes the flow control and opening / closing functions of the valve, meeting the precise adjustment requirements in industrial automation and control systems. This pressure-resistant instrument valve drives the valve stem 8 and valve ball 10 to rotate by turning the handle 2, realizing precise control of the fluid and opening / closing operation. The ball groove 20 inside the ball seat 12 fits into the bottom of the valve ball 10, improving the stability and pressure resistance of the valve ball 10. The design of sealing packing 7, sealing ring 24, etc., ensures the overall sealing and durability of the valve. The fitting design of the locking block 9 and the locking groove 19 enhances the connection stability between the valve stem 8 and the valve ball 10. It has the advantages of simple operation, precise control, stability and reliability, and strong pressure resistance, and is suitable for fluid control scenarios in various industrial automation and control systems.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc., are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0046] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure-resistant instrument valve, characterized in that: include: A valve body (1) is provided with a fixing tube (17) at one end and a second nut (18) on the surface of the fixing tube (17). A side cover (14) is provided at the other end of the valve body (1) and the side cover (14) is threadedly connected to the valve body (1). A connecting post (15) is provided on the side of the side cover (14) and a first nut (16) is provided on the surface of the connecting post (15). A valve seat (13) is provided at the center of the valve body (1) and a valve ball (10) is provided inside the valve seat (13). An inner hole (11) is provided inside the valve ball (10) and the inner hole (11) is connected to the valve body (1). The flow channels of the valve ball (10) and the side cover (14) are connected. The upper part of the valve ball (10) is provided with a valve stem (8) and the valve stem (8) extends to the outside of the valve body (1). The upper part of the valve stem (8) is provided with a screw (4) and the screw (4) is fixedly connected to the valve stem (8). The upper part of the screw (4) is provided with a handle (2) and the inside of the handle (2) is provided with a nut (3). The nut (3) is threadedly connected to the screw (4). The bottom of the valve ball (10) is provided with a ball seat (12) and the inside of the ball seat (12) is provided with a ball groove (20). The ball groove (20) is fitted into the bottom of the valve ball (10).

2. The pressure-resistant instrument valve according to claim 1, characterized in that: The screw (4) and the handle (2) are respectively provided with a first washer (5) and a second washer (6) on the upper and lower sides, and the first washer (5) and the second washer (6) are both sleeved on the surface of the screw (4).

3. The pressure-resistant instrument valve according to claim 1, characterized in that: A sealing packing (7) is provided at the connection between the valve stem (8) and the valve body (1).

4. A pressure-resistant instrument valve according to claim 1, characterized in that: The ball seat (12) is provided with a fixed seat (21) inside, and the fixed seat (21) is provided with an elastic element (23) inside. The upper part of the elastic element (23) is provided with a push rod (22) and the push rod (22) is in contact with the bottom of the valve ball (10).

5. A pressure-resistant instrument valve according to claim 1, characterized in that: A sealing ring (24) is provided at the threaded connection between the side cover (14) and the valve body (1), and the sealing ring (24) is sleeved on the surface of the side cover (14).

6. A pressure-resistant instrument valve according to claim 1, characterized in that: The lower part of the valve stem (8) is provided with a locking block (9) and the inside of the valve ball (10) is provided with a locking groove (19), and the locking block (9) and the locking groove (19) are interlocked.

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