Pressure-resistant angle type three-port valve

Abstract

The utility model discloses a pressure-resistant angle type three-port valve which comprises a valve body, a first side port and a second side port are formed in the two sides of the valve body respectively, a lower port is formed in the lower portion of the valve body, and the first side port, the second side port and the lower port form a three-port structure. A mounting seat is arranged on the upper portion of the valve body and is of a columnar structure with threads arranged outside, a plate-shaped nut is mounted on the surface of the mounting seat, and a ball core is arranged in the valve body. By rotating the ball core, the communication state between the lower cavity channel and the lower port and the communication state between the side cavity channel and the first side port or the second side port can be changed, so that opening, closing and flow direction control of fluid are achieved, the ball core is flexible in rotating action and good in sealing performance, and the flow and the flow direction of the fluid can be accurately controlled; the sealing gasket is arranged at the position of the cavity channel of the ball core, the sealing gasket and the lower port installation end of the valve body are mutually embedded, and the sealing performance between the ball core and the valve body is guaranteed.

Description

Technical Field

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

[0002] Ball valves are installed on fluid delivery pipelines to regulate fluid flow. A typical ball valve structure includes a valve body with a fluid outlet and inlet at each end. A valve shaft extends from the top of the valve body, and a spherical valve core is connected to the lower end of the valve shaft. Rotating the valve shaft changes the opening direction of the spherical valve core, thus opening and closing the fluid outlet and inlet. Ball valves come in various shapes and sizes, including angle three-port valves.

[0003] Existing angle three-port valves have poor pressure resistance, and under prolonged high pressure, internal sealing problems occur in the valve body, affecting the valve's service life. 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 angle-type three-port valve, which solves the problem that the existing angle-type three-port valves have poor pressure resistance and internal sealing problems under long-term high pressure, thus affecting the service life of the valve.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure-resistant angle-type three-port valve, comprising: a valve body, wherein a first side port and a second side port are respectively provided on both sides of the valve body, and a lower port is provided at the bottom, the first side port, the second side port and the lower port forming a three-port structure; a mounting seat is provided on the upper part of the valve body, and the mounting seat is a columnar structure with external threads; a plate-shaped nut is installed on the surface of the mounting seat; a ball core is provided inside the valve body and is rotatably connected to the valve body; a lower cavity and a side cavity are provided inside the ball core and form an L-shaped interconnection structure; the lower cavity is connected to the lower port; a valve stem is provided on the upper part of the ball core and extends to the outside of the mounting seat; two sets of pressure caps are provided on the surface of the valve stem and sealing packing is provided between the two sets of pressure caps; a packing bolt is provided on the upper part of the valve stem and a handle is provided on the upper part of the packing bolt; the valve stem passes through the packing bolt and is inserted into the handle; a fixing screw is provided on the side of the handle and the fixing screw passes through the handle and contacts the valve stem.

[0006] In a preferred embodiment of this utility model, a sealing gasket is provided in the cavity of the ball core, and the sealing gasket is fitted with the lower port mounting end of the valve body.

[0007] In a preferred embodiment of this utility model, the first side port, the second side port, and the lower port have the same structure and are all threadedly connected to the valve body and have screw caps on their surfaces. Sealing valve seats and sealing rings are provided at the connection points between the first side port, the second side port, and the lower port and the valve body.

[0008] In a preferred embodiment of this utility model, the top of the valve stem is provided with a fixing groove and the fixing screw is located inside the fixing groove.

[0009] In a preferred embodiment of the present invention, the top of the ball core is provided with a groove and the bottom of the valve stem is provided with a corresponding protrusion, and the protrusion and the groove are fitted together.

[0010] In a preferred embodiment of this utility model, the surface of the handle is provided with a direction indicator.

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

[0012] This utility model features a three-port valve body structure with a first side port and a second side port on both sides and a lower port at the bottom. A mounting base with external threads is located on the upper part of the valve body. A ball core is rotatably connected to the valve body inside the valve body. A lower cavity and a side cavity are formed within the ball core, creating an L-shaped connection. The lower cavity is connected to the lower port. A valve stem extends from the upper part of the ball core to the outside of the mounting base. Two sets of glands are located on the surface of the valve stem, with sealing packing between them. Packing is also located on the upper part of the valve stem. The valve features a handle at the top of the packing bolt. The valve stem passes through the packing bolt and is inserted into the handle. A fixing screw is located on the side of the handle, connecting the handle and the valve stem. By rotating the ball core, the connection between the lower chamber and the lower port, as well as between the side chamber and the first or second side port, can be changed, thus controlling the fluid's on / off state and flow direction. The ball core's rotation is flexible, providing excellent sealing performance and precise control of fluid flow rate and direction, meeting the needs of various operating conditions. A sealing gasket is placed in the ball core's cavity, fitting into the lower port of the valve body to ensure a tight seal between the ball core and the valve body. Simultaneously, the gland and sealing packing on the valve stem surface, along with the sealing seat and sealing ring at the port, constitute a multi-seal structure. This multi-seal design improves the valve's sealing performance and pressure resistance, preventing fluid leakage under high pressure and extending its service life. It is easy to operate, convenient to install, and has a long service life, making it suitable for various high-pressure, high-sealing fluid transport pipeline systems. Attached Figure Description

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

[0014] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the edge surface structure of this utility model.

[0016] In the diagram: 1. Valve body; 2. Handle; 3. First side port; 4. Second side port; 5. Lower port; 6. Fixing screw; 7. Packing bolt; 8. Sealing packing; 9. Gland; 10. Valve stem; 11. Fixing groove; 12. Protrusion; 13. Ball core; 14. Plate nut; 15. Mounting seat; 16. Sealing seat; 17. Sealing ring; 18. Screw cap; 19. Lower cavity; 20. Side cavity; 21. Sealing gasket; 22. Groove. 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 angle-type three-port valve, comprising: a valve body 1, wherein a first side port 3 and a second side port 4 are respectively provided on both sides of the valve body 1, and a lower port 5 is provided at the bottom, the first side port 3, the second side port 4 and the lower port 5 forming a three-port structure; a mounting seat 15 is provided at the upper part of the valve body 1, and the mounting seat 15 is a columnar structure with external threads; a plate nut 14 is installed on the surface of the mounting seat 15; a ball core 13 is provided inside the valve body 1, and the ball core 13 is rotatably connected to the valve body 1; a lower cavity 19 and a side cavity 20 are provided inside the ball core 13, and the lower cavity 19 and the side cavity 20 form an L-shaped connection. The structure is interconnected, with the lower cavity 19 connected to the lower port 5. A valve stem 10 is mounted on the upper part of the ball core 13, extending to the outside of the mounting base 15. Two sets of pressure caps 9 are mounted on the surface of the valve stem 10, with sealing packing 8 between them. A packing bolt 7 is mounted on the upper part of the valve stem 10, and a handle 2 is mounted on the upper part of the packing bolt 7. The valve stem 10 passes through the packing bolt 7 and is inserted into the handle 2. A fixing screw 6 is mounted on the side of the handle 2, penetrating and contacting the valve stem 10. A first side port 3 and a second side port 4 are respectively located on both sides of the valve body 1, and a lower port 5 is located at the bottom. This configuration forms a three-way valve body. The valve body 1 has the following structure: a mounting seat 15 is provided on the upper part of the valve body 1, and the mounting seat 15 is a cylindrical structure with external threads. A ball core 13 is provided inside the valve body 1, and the ball core 13 is rotatably connected to the valve body 1. A lower cavity 19 and a side cavity 20 are provided inside the ball core 13, and the lower cavity 19 and the side cavity 20 form an L-shaped communication structure. The lower cavity 19 is connected to the lower port 5. A valve stem 10 is provided on the upper part of the ball core 13, and the valve stem 10 extends to the outside of the mounting seat 15. Two sets of glands 9 are provided on the surface of the valve stem 10, and a sealing packing 8 is provided between the two sets of glands 9. A packing bolt 7 is provided on the upper part of the valve stem 10, and a handle 2 is provided on the upper part of the packing bolt 7. The valve stem 10 passes through the packing bolt 7 and is inserted into the handle 2. A fixing screw 6 is provided on the side of the handle 2 and passes through the handle 2 and contacts the valve stem 10. By rotating the ball core 13, the communication state between the lower cavity 19 and the lower port 5, and between the side cavity 20 and the first side port 3 or the second side port 4 can be changed, thereby realizing the opening and closing of the fluid and the control of the flow direction. The rotation of the ball core 13 is flexible and has good sealing performance, which can accurately control the flow rate and flow direction of the fluid and meet the needs of different working conditions. A sealing gasket 21 is provided in the cavity of the ball core 13 and fits into the mounting end of the lower port 5 of the valve body 1 to ensure the sealing between the ball core 13 and the valve body 1.Meanwhile, the gland 9 and sealing packing 8 on the surface of the valve stem 10, as well as the sealing valve seat 16 and sealing ring 17 at the port, together constitute a multi-seal structure. The design of the multi-seal structure improves the sealing performance and pressure resistance of the valve, prevents fluid leakage under high pressure, and extends the service life of the valve. It is easy to operate, easy to install, and has a long service life, making it suitable for various high-pressure and high-sealing fluid transportation pipeline systems.

[0019] Further improvements, such as Figure 3 As shown: A sealing gasket 21 is provided in the cavity of the ball core 13 and the sealing gasket 21 is fitted with the lower port 5 of the valve body 1. This arrangement enhances the sealing between the ball core 13 and the valve body 1, prevents fluid leakage under high pressure, and improves the valve's pressure resistance and service life.

[0020] Further improvements, such as Figure 2 As shown: the first side port 3, the second side port 4, and the lower port 5 have the same structure and are all threaded to the valve body 1 and have screw caps 18 on their surfaces. The connection between the first side port 3, the second side port 4, and the lower port 5 and the valve body 1 is provided with a sealing valve seat 16 and a sealing ring 17. The threaded connection ensures the firmness of the port, the screw cap 18 provides additional protection, and the sealing valve seat 16 and the sealing ring 17 further enhance the sealing of the connection and prevent fluid leakage.

[0021] Further improvements, such as Figure 2 As shown: The top of the valve stem 10 is provided with a fixing groove 11 and the fixing screw 6 is located inside the fixing groove 11. This setting ensures the stability of the valve stem 10, prevents the valve stem 10 from shifting or loosening during rotation, and improves the operational stability and safety of the valve.

[0022] Further improvements, such as Figure 2 As shown: The top of the ball core 13 is provided with a groove 22 and the bottom of the valve stem 10 is provided with a corresponding protrusion 12. The protrusion 12 and the groove 22 are interlocked. The interlocking design of the groove 22 and the protrusion 12 makes the connection between the ball core 13 and the valve stem 10 more secure, ensuring that the ball core 13 can accurately follow the movement of the valve stem 10 when rotating, thereby improving the operating accuracy and stability of the valve.

[0023] Further improvements, such as Figure 2 As shown: The surface of the handle 2 is provided with a direction indicator, which provides clear guidance for the operator, enabling them to quickly identify the opening and closing direction of the valve.

[0024] Furthermore, the innovative aspects of this solution will be explained.

[0025] Multiple sealing structure design: The sealing gasket 21 is fitted into the lower port 5 of the valve body 1. Two sets of glands 9 and sealing packing 8 are set on the surface of the valve stem 10. Sealing valve seat 16 and sealing ring 17 are set at the connection between the first side port 3, the second side port 4, the lower port 5 and the valve body 1, forming multiple seals to improve sealing performance and pressure resistance.

[0026] Three-port structure design: The valve body 1 is provided with a first side port 3 and a second side port 4 on both sides, and a lower port 5 at the bottom, forming a three-port structure. By rotating the ball core 13, the connection state between the lower cavity 19 and the lower port 5, and between the side cavity 20 and the first side port 3 or the second side port 4 can be changed, so as to realize fluid flow direction control.

[0027] L-shaped cavity design of the sphere core: The sphere core 13 is equipped with a lower cavity 19 and a side cavity 20 to form an L-shaped connecting structure. In conjunction with the three-port structure, it ensures flexible and precise switching of fluid flow direction.

[0028] Valve stem and ball core fitting structure: The top of the ball core 13 is provided with a groove 22, and the bottom of the valve stem 10 is provided with a protrusion 12. The two are fitted together to ensure that the ball core 13 moves synchronously when the valve stem 10 rotates, thereby improving the operating accuracy.

[0029] Handle Direction Indicator: A direction indicator is set on the surface of the handle 2 to provide operators with clear guidance on the switching direction and reduce the rate of operational errors.

[0030] Specifically, a comparison of relevant test data and practical application data for this solution.

[0031] Test Project Traditional angle three-port valve This utility model valve Improvement in technical effect Leakage rate (L / min) 0.3 0.1 66.7％ Pressure resistance (MPa) 1.5 2.0 33.3％ Operating torque (N·m) 20 15 25.0％ Service life (years) 5 7 40.0％

[0032] Data Description

[0033] Leakage: This reflects the valve's sealing performance. The smaller the value, the better the sealing effect. This utility model significantly reduces leakage through a multi-seal structure.

[0034] Pressure resistance: This reflects the reliability of the valve under high-pressure conditions. The improved pressure resistance of this invention makes it suitable for fluid transportation scenarios with higher pressure.

[0035] Operating torque: measures the ease of valve operation. The smaller the torque, the less effort is required to operate. The fitting design of the protrusion 12 and the groove 22 reduces transmission resistance.

[0036] Service life: This comprehensively reflects the durability of the valve. The multiple sealing structure and reasonable structural design extend the service life of the valve.

[0037] Data Validity Statement

[0038] Test environment: normal temperature and pressure, medium is water, simulating conventional fluid transportation conditions.

[0039] Test methods: Leakage test adopts pressure drop method, pressure resistance test is based on GB / T 13927-2008 "Industrial Valve Pressure Test", operating torque is measured with torque wrench, and service life is estimated by accelerated aging test combined with actual working conditions.

[0040] Data source: Laboratory measured data, with 10 test samples, and the average value is taken, which has a certain degree of representativeness and reliability.

[0041] Working principle: The valve is installed on the fluid delivery pipeline via the threaded structure on the mounting base 15, ensuring a secure installation. At this time, the first side port 3, the second side port 4, and the lower port 5 are respectively connected to different parts of the pipeline. The valve is easy to install, has a firm connection, and can adapt to different pipeline layouts. The operator rotates the handle 2 according to the direction indicator, and the rotation of the handle 2 drives the valve stem 10 to rotate. The valve stem 10 is engaged with the groove 22 on the top of the ball core 13 through the protrusion 12 at its bottom, transmitting the rotational force to the ball core 13. The handle 2 is easy to operate and has clear indication, ensuring that the ball core 13 can accurately follow the movement of the valve stem 10. Under the action of the valve stem 10, the ball core 13 rotates, and its internal lower cavity 19 and side cavity 20 form an L-shaped interconnected structure. By rotating the ball core 13, the connection between the lower cavity 19 and the lower port 5, and between the side cavity 20 and the first side port 3 or the second side port 4, can be changed, thereby realizing the switching and flow direction control of the fluid. The rotation of the ball core 13 is flexible, with good sealing performance, and can accurately control the flow rate and direction of the fluid, meeting the needs of different working conditions. A sealing gasket 21 is provided in the cavity of the ball core 13, which fits into the mounting end of the lower port 5 of the valve body 1, ensuring the sealing between the ball core 13 and the valve body 1. At the same time, the gland 9 and sealing packing 8 on the surface of the valve stem 10, as well as the sealing valve seat 16 and sealing ring 17 at the port, together constitute a multi-seal structure. The design of the multi-seal structure improves the sealing performance and pressure resistance of the valve, prevents fluid leakage under high pressure, and extends the service life of the valve.

[0042] 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.

[0043] 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.

[0044] 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 angle-type three-port valve, characterized in that: include: A valve body (1) is provided with a first side port (3) and a second side port (4) on both sides, and a lower port (5) at the bottom. The first side port (3), the second side port (4), and the lower port (5) form a three-port structure. A mounting seat (15) is provided on the upper part of the valve body (1), and the mounting seat (15) is a columnar structure with external threads. A plate nut (14) is installed on the surface of the mounting seat (15). A ball core (13) is provided inside the valve body (1), and the ball core (13) is rotatably connected to the valve body (1). The ball core (13) is provided with a lower cavity (19) and a side cavity (20) inside the ball core (19). The lower cavity (19) and the lower port (5) are connected to form an L-shaped interconnection structure. The upper part of the ball core (13) is provided with a valve stem (10) and the valve stem (10) extends to the outside of the mounting base (15). The surface of the valve stem (10) is provided with two sets of pressure caps (9) and a sealing packing (8) is provided between the two sets of pressure caps (9). The upper part of the valve stem (10) is provided with a packing bolt (7) and the upper part of the packing bolt (7) is provided with a handle (2). The valve stem (10) passes through the packing bolt (7) and is inserted into the handle (2). The side of the handle (2) is provided with a fixing screw (6) and the fixing screw (6) passes through the handle (2) and contacts the valve stem (10).

2. The pressure-resistant angle-type three-port valve according to claim 1, characterized in that: A sealing gasket (21) is provided in the cavity of the ball core (13), and the sealing gasket (21) is fitted with the lower port (5) of the valve body (1).

3. The pressure-resistant angle-type three-port valve according to claim 1, characterized in that: The first side port (3), the second side port (4) and the lower port (5) have the same structure and are all threadedly connected to the valve body (1) and have screw caps (18) on their surfaces. Sealing valve seats (16) and sealing rings (17) are provided at the connection between the first side port (3), the second side port (4) and the lower port (5) and the valve body (1).

4. A pressure-resistant angle-type three-port valve according to claim 1, characterized in that: The valve stem (10) has a fixing groove (11) at its top and the fixing screw (6) is located inside the fixing groove (11).

5. A pressure-resistant angle-type three-port valve according to claim 1, characterized in that: The top of the ball core (13) is provided with a groove (22) and the bottom of the valve stem (10) is provided with a corresponding protrusion (12), and the protrusion (12) and the groove (22) are fitted together.

6. A pressure-resistant angle-type three-port valve according to claim 1, characterized in that: The surface of the handle (2) is provided with a direction indicator.

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