Control ball valves and piping systems

Abstract

This application relates to the field of valve technology and discloses a regulating ball valve and pipeline system. The regulating ball valve includes: a valve body, a valve core, a valve cover, a valve stem, and a first bushing. The valve body has a channel, and the valve core is rotatably disposed in the channel. The valve cover is fixedly connected to the valve body, and the valve cover and the valve body form an installation channel extending along a preset direction. A first limiting part and a second limiting part are provided in the installation channel, spaced apart. A portion of the valve stem is limited and installed between the first limiting part and the second limiting part. The valve stem is connected to the valve core and is adapted to drive the valve core to rotate to regulate the flow rate of fluid flowing through the channel. The first bushing is sleeved on the valve stem and includes a first section. Along the preset direction, the first section is located between the first limiting part and the second limiting part, and a portion of the first section is installed between the valve stem and the first limiting part. This improves the stability of torque transmission between the valve stem and the valve core, and at the same time, it can better protect the valve stem and the valve body, which is beneficial to improving the service life and reliability of the valve stem.

Description

Technical Field

[0001] This application relates to the field of valve technology, and in particular to a regulating ball valve and pipeline system. Background Technology

[0002] As a flow regulating device in pipeline systems, regulating ball valves are widely used in fields such as water conservancy, HVAC and industrial fluid control.

[0003] In related technologies, the valve core and valve stem of a regulating ball valve are fitted with a clearance. Part of the valve stem is rotatably mounted inside the valve body and valve cover. When a torque is applied to drive the valve stem to rotate, the valve stem drives the valve core to rotate synchronously, thereby controlling the rotation angle of the valve core to achieve flow regulation. However, during the operation of the regulating ball valve (especially during pressure fluctuations or switching), fluid force or torsional force may attempt to push the valve stem to move along its own axis, thus affecting the stability of torque transmission between the valve stem and the valve core. At the same time, during the rotation of the valve stem, the valve stem may generate significant frictional losses with the valve body or valve cover, thereby affecting the service life and reliability of the valve stem. Utility Model Content

[0004] This application provides a regulating ball valve and pipeline system, which solves the technical problem of valve stem and valve core sliding in the vertical direction, improves the stability of torque transmission between valve stem and valve core, and at the same time, the first section of the first bushing is set between the valve stem and the first limiting part to prevent the valve stem from direct contact with the first limiting part. The first section can withstand friction, thereby better protecting the valve stem and valve body, which is conducive to improving the service life and reliability of the valve stem.

[0005] To achieve the above objectives, the main technical solutions adopted in this application include:

[0006] In a first aspect, embodiments of this application provide a regulating ball valve, comprising:

[0007] The valve body has channels;

[0008] The valve core is rotatably mounted in the channel;

[0009] The valve cover is fixedly connected to the valve body, and the valve cover and the valve body form an installation channel extending in a preset direction. A first limiting part and a second limiting part are provided in the installation channel. The first limiting part and the second limiting part are arranged opposite to each other and spaced apart in the preset direction.

[0010] A valve stem is provided in the mounting channel, and a portion of the valve stem is limited between the first limiting part and the second limiting part. The valve stem is connected to the valve core, and the valve stem is adapted to drive the valve core to rotate in order to regulate the flow rate of fluid flowing through the orifice.

[0011] The first bushing is sleeved on the valve stem. The first bushing includes a first section. Along a preset direction, the first section is located between the first limiting part and the second limiting part, and a portion of the first section is installed between the valve stem and the first limiting part.

[0012] According to the embodiments of this application, the regulating ball valve utilizes a first limiting part and a second limiting part to restrict the movement of the valve stem in a preset direction, thereby preventing the valve stem from sliding relative to the valve core along its own axis. This is beneficial to improving the stability of torque transmission between the valve stem and the valve core. At the same time, a first bushing is sleeved on the outer circumferential surface of the valve stem. In the preset direction, the first section of the first bushing is located between the first limiting part and the second limiting part, and part of the first section is installed between the valve stem and the first limiting part. With this arrangement, the valve stem does not contact the first limiting part. When the valve stem rotates relative to the first section, the first section of the first bushing is used to bear friction, thereby better protecting the valve stem and valve body, which is beneficial to improving the service life and reliability of the valve stem.

[0013] Optionally, the valve body has a first mounting hole, and a first limiting part is provided in the first mounting hole. The first mounting hole communicates with the channel along a preset direction.

[0014] The valve cover has a second mounting hole, and a second limiting part is provided in the second mounting hole. The first mounting hole and the second mounting hole are connected in a preset direction to form a mounting channel.

[0015] Optionally, along a preset direction, the first mounting hole includes a first sub-hole and a second sub-hole connected in sequence. The second sub-hole is connected to the channel through the first sub-hole, and the inner diameter of the first sub-hole is smaller than the inner diameter of the second sub-hole to form a first limiting part.

[0016] Optionally, the first bushing also includes a second section connected to the first section, which extends in a predetermined direction toward the direction of the passage, and a portion of the second section is disposed between the valve stem and the inner circumferential surface of the first sub-hole.

[0017] Optionally, the first bushing also includes a third section connected to the first section, which extends in a predetermined direction away from the channel, and a portion of the third section is disposed between the valve stem and the inner circumferential surface of the second sub-hole.

[0018] Optionally, the regulating ball valve further includes a second bushing sleeved on the valve stem. The second bushing sleeve includes a fourth section, which is located between the first limiting part and the second limiting part along a preset direction. A portion of the fourth section is installed between the valve stem and the second limiting part.

[0019] Optionally, along a preset direction, the second mounting hole includes a third sub-hole and a fourth sub-hole that are connected in sequence. The fourth sub-hole is connected to the second sub-hole through the third sub-hole, and the inner diameter of the fourth sub-hole is smaller than the inner diameter of the third sub-hole to form a second limiting part.

[0020] Optionally, the second bushing also includes a fifth section connected to the fourth section. The fifth section extends in a predetermined direction away from the channel, and a portion of the fifth section is disposed between the valve stem and the inner circumferential surface of the fourth sub-hole.

[0021] Optionally, the regulating ball valve further includes a first valve seat, which is at least partially installed in the valve body. The valve stem is positioned opposite to and spaced apart from the first valve seat along a preset direction. The valve core is connected to the first valve seat and is rotatable relative to the first valve seat along the axial direction of the valve stem. The axial direction of the valve stem is parallel to the preset direction.

[0022] Secondly, embodiments of this application provide a pipeline system including the regulating ball valve in the first aspect embodiment.

[0023] According to the pipeline system proposed in the embodiments of this application, by setting the above-mentioned regulating ball valve, the regulating ball valve can restrict the movement of the valve stem in a preset direction by using the first limiting part and the second limiting part, thereby preventing the valve stem from sliding relative to the valve core along its own axis, which is beneficial to improving the stability of torque transmission between the valve stem and the valve core. At the same time, a first bushing is sleeved on the outer circumferential surface of the valve stem. In the preset direction, the first section of the first bushing is located between the first limiting part and the second limiting part, and part of the first section is installed between the valve stem and the first limiting part. With this arrangement, the valve stem does not contact the first limiting part. When the valve stem rotates relative to the first section, the first section of the first bushing is used to bear friction, thereby better protecting the valve stem and valve body, which is beneficial to improving the service life and reliability of the valve stem. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 A cross-sectional view of a regulating ball valve provided in one embodiment of this application;

[0026] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0027] Figure 3 yes Figure 1 A magnified view of a section at point B in the middle;

[0028] Figure 4 This is a cross-sectional view of a valve body provided in one embodiment of this application.

[0029] [Explanation of Labels in the Attached Image]

[0030] Adjusting ball valve 100;

[0031] Valve body 1; channel 11; first limiting part 12; first mounting hole 13; first sub-hole 131; second sub-hole 132;

[0032] Valve core 2;

[0033] Valve cover 3; second limiting part 31; second mounting hole 32; third sub-hole 321; fourth sub-hole 322;

[0034] Valve stem 4;

[0035] First bushing 5; First segment 51; Second segment 52; Third segment 53;

[0036] Second bushing 6; Fourth section 61; Fifth section 62;

[0037] First valve seat 7;

[0038] Sealing ring 8;

[0039] End cap 9; mounting cavity 91;

[0040] Second valve seat 10;

[0041] Preset direction X. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0044] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0047] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0048] It should be noted that, as a flow regulating device in a pipeline system, the regulating ball valve is widely used in fields such as water conservancy, HVAC and industrial fluid control.

[0049] In related technologies, the valve core and valve stem of a regulating ball valve are fitted with a clearance. Part of the valve stem is rotatably mounted inside the valve body and valve cover. When a torque is applied to drive the valve stem to rotate, the valve stem drives the valve core to rotate synchronously, thereby controlling the rotation angle of the valve core to achieve flow regulation. However, during the operation of the regulating ball valve (especially during pressure fluctuations or switching), fluid force or torsional force may attempt to push the valve stem to move along its own axis, thus affecting the stability of torque transmission between the valve stem and the valve core. At the same time, during the rotation of the valve stem, the valve stem may generate significant frictional losses with the valve body or valve cover, thereby affecting the service life and reliability of the valve stem.

[0050] Based on this, this application proposes a regulating ball valve 100 and a pipeline system. The regulating ball valve 100 uses a first limiting part 12 and a second limiting part 31 to restrict the movement of the valve stem 4 in a preset direction X, thereby preventing the valve stem 4 from sliding relative to the valve core 2 along its own axis. This is beneficial to improving the stability of torque transmission between the valve stem 4 and the valve core 2. At the same time, a first bushing 5 is sleeved on the outer circumferential surface of the valve stem 4. In the preset direction X, the first section 51 of the first bushing 5 is located between the first limiting part 12 and the second limiting part 31, and part of the first section 51 is installed between the valve stem 4 and the first limiting part 12. With this arrangement, the valve stem 4 does not contact the first limiting part 12. When the valve stem 4 rotates relative to the first section 51, the first section 51 of the first bushing 5 is used to bear friction, thereby better protecting the valve stem 4 and the valve body 1, which is beneficial to improving the service life and reliability of the valve stem 4.

[0051] The regulating ball valve 100 and piping system proposed in this application are described below with reference to the accompanying drawings.

[0052] like Figures 1-4 As shown, the regulating ball valve 100 according to the first aspect embodiment of this application includes: a valve body 1, a valve core 2, a valve cover 3, a valve stem 4, and a first bushing 5. The valve body 1 has a channel 11, the valve core 2 is rotatably disposed in the channel 11, the valve cover 3 is fixedly connected to the valve body 1, and the valve cover 3 and the valve body 1 form an installation channel extending along a preset direction X. A first limiting part 12 and a second limiting part 31 are disposed in the installation channel. Along the preset direction X, the first limiting part 12 and the second limiting part 31 are disposed opposite to each other and spaced apart. A portion of the valve stem 4 is disposed in the mounting channel, and a portion of the valve stem 4 is limited and installed between the first limiting part 12 and the second limiting part 31. The valve stem 4 is connected to the valve core 2, and the valve stem 4 is adapted to drive the valve core 2 to rotate to regulate the flow rate of fluid flowing through the orifice 11. A first bushing 5 is sleeved on the valve stem 4. The first bushing 5 includes a first segment 51, which is located between the first limiting part 12 and the second limiting part 31 along a preset direction X. A portion of the first segment 51 is installed between the valve stem 4 and the first limiting part 12.

[0053] Specifically, the valve body 1 serves as the basic frame, and its internal channels 11 provide a directional flow path for the fluid, thereby making the fluid flow controllable and facilitating subsequent precise adjustment of the flow rate.

[0054] Furthermore, the valve body 1 and the valve cover 3 are fixedly connected, and the fixed connection method includes, but is not limited to, bolt connection. The valve body 1 and the valve cover 3 form an installation channel extending along a predetermined direction X. It can be understood that, for example... Figure 1 As shown, the valve stem 4 extends along a preset direction X, and part of the valve stem 4 is disposed in the installation channel. Furthermore, the valve core 2 is rotatably disposed in the channel 11, and one end of the valve stem 4 is connected to the valve core 2 along the preset direction X. This arrangement makes the valve stem 4 and the valve core 2 perpendicular to each other after installation.

[0055] The valve stem 4 is adapted to drive the valve core 2 to rotate. In some embodiments of this application, the valve stem 4 and the valve core 2 are in clearance fit. The valve stem 4 can rotate along the axial direction of the valve stem 4. When the valve stem 4 rotates, the valve stem 4 drives the valve core 2 to rotate synchronously. In this way, by rotating the valve core 2, the relative position of the valve core 2 itself and the orifice 11 can be changed, thereby changing the effective flow area of ​​the orifice 11, thereby playing the role of regulating the flow rate of fluid flowing through the orifice 11.

[0056] In related technologies, when the pressure inside the valve body changes or the valve stem is twisted, relative sliding between the valve stem and the valve core can easily occur along the preset direction, that is, along the direction perpendicular to the valve stem and the valve core. This greatly affects the stability of torque transmission between the valve stem and the valve core, and thus affects the flow regulation accuracy.

[0057] Based on this, this application provides a first limiting part 12 and a second limiting part 31 in the installation channel. The first limiting part 12 and the second limiting part 31 are arranged opposite to each other and spaced apart along a preset direction X. Optionally, the first limiting part 12 can be constructed as a first protrusion structure, which protrudes from the inner peripheral surface of the installation channel. There can be multiple first protrusion structures, which are arranged sequentially at intervals along the axial direction of the installation channel. Similarly, the second limiting part 31 can be constructed as a second protrusion structure, which protrudes from the inner peripheral surface of the installation channel. There can be multiple second protrusion structures, which are arranged sequentially at intervals along the axial direction of the installation channel.

[0058] When the valve stem 4 is assembled with the valve body 1 and the valve cover 3, a portion of the valve stem 4 is partially limited between the first limiting part 12 and the second limiting part 31. The first limiting part 12 and the second limiting part 31 can rigidly limit the valve stem 4. For example, they can restrict the valve stem 4 from moving upward or downward in a preset direction X. In other words, whether the pressure inside the valve body 1 changes or the valve stem 4 is twisted, the valve stem 4 and the valve core 2 will not slide relative to each other in the preset direction X. This avoids the valve stem 4 sliding relative to the valve core 2 along its own axis. With this setting, when the valve stem 4 is rotated to transmit torque to the valve core 2, the stability of torque transmission can be guaranteed, thereby making the rotation angle of the valve core 2 more precise. This allows for more precise adjustment of the effective flow area of ​​the orifice 11, which is beneficial to improving the flow regulation accuracy of the regulating ball valve 100.

[0059] It should be noted that when the valve stem 4 rotates, there may be significant friction between the valve stem 4 and the first limiting part 12. In order to improve the service life of the valve body 1 or the valve stem 4 and to ensure the normal rotation of the valve stem 4, this application provides a first bushing 5 at the first limiting part 12.

[0060] Specifically, such as Figure 2As shown, the first bushing 5 is sleeved on the valve stem 4. Along the preset direction X, the first section 51 of the first bushing 5 is located between the first limiting part 12 and the second limiting part 31, and part of the first section 51 is installed between the valve stem 4 and the first limiting part 12. Optionally, part of the first section 51 abuts between the valve stem 4 and the first limiting part 12. With this arrangement, when the valve stem 4 rotates, the valve stem 4 does not contact the first limiting part 12, and the valve stem 4 rotates relative to the first bushing 5. The first bushing 5, as a wear-resistant material (usually softer than the valve stem 4 or valve body 1 material), can withstand friction, thereby better protecting the valve stem 4 and valve body 1. When the first bushing 5 is worn, it can be directly disassembled and replaced. This is beneficial to improving the service life of the valve body 1 or valve stem 4, and thus to improving the service life of the regulating ball valve 100.

[0061] Furthermore, the first section 51 can not only effectively prevent the valve stem 4 from moving in the preset direction X, but also ensure the precise positioning of the valve stem 4 in the preset direction X. This helps to reduce media leakage and thus improve the sealing performance of the regulating ball valve 100.

[0062] In summary, according to the regulating ball valve proposed in the embodiments of this application, the regulating ball valve 100 can restrict the movement of the valve stem 4 along a preset direction X by using the first limiting part 12 and the second limiting part 31, thereby preventing the valve stem 4 from sliding relative to the valve core 2 along its own axis, which is beneficial to improving the stability of torque transmission between the valve stem 4 and the valve core 2. At the same time, a first bushing 5 is sleeved on the outer circumferential surface of the valve stem 4. Along the preset direction X, the first section 51 of the first bushing 5 is located between the first limiting part 12 and the second limiting part 31, and part of the first section 51 is installed between the valve stem 4 and the first limiting part 12. With this arrangement, the valve stem 4 does not contact the first limiting part 12. When the valve stem 4 rotates relative to the first section 51, the first section 51 of the first bushing 5 is used to bear friction, thereby better protecting the valve stem 4 and the valve body 1, which is beneficial to improving the service life and reliability of the valve stem 4.

[0063] In some embodiments of this application, such as Figure 1 and Figure 4 As shown, the valve body 1 has a first mounting hole 13, and a first limiting part 12 is provided in the first mounting hole 13. The first mounting hole 13 is connected to the channel 11 along the preset direction X. The valve cover 3 has a second mounting hole 32, and a second limiting part 31 is provided in the second mounting hole 32. The first mounting hole 13 and the second mounting hole 32 are connected along the preset direction X to form a mounting channel.

[0064] Specifically, such as Figure 1As shown, along the preset direction X, the valve cover 3 is fixedly installed on the top of the valve body 1. The valve body 1 has a first mounting hole 13 that communicates with the channel 11 along the preset direction X. The valve cover 3 has a second mounting hole 32. When the valve cover 3 is fixedly connected to the valve body 1, along the preset direction X, the second mounting hole 32 communicates with the first mounting hole 13, so that the first mounting hole 13 and the second mounting hole 32 together form an installation channel extending along the preset direction X.

[0065] Furthermore, the inner circumferential surface of the first mounting hole 13 is provided with a first limiting part 12, and the valve stem 4 has a third limiting part that is fitted with the first limiting part 12. The inner circumferential surface of the second mounting hole 32 is provided with a second limiting part 31, and the valve stem 4 also has a fourth limiting part that is fitted with the second limiting part 31. When the valve stem 4 is fitted with the valve core 2, the valve stem 4 is inserted through the first mounting hole 13 and into the channel 11 to connect with the valve core 2. The third limiting part of the valve stem 4 is fitted with the first limiting part 12 in a preset direction X. Then, the valve cover 3 is fitted with the valve body 1, and the valve stem 4 is inserted through the second mounting hole 32. The fourth limiting part of the valve stem 4 is fitted with the second limiting part 31 in a preset direction X.

[0066] With this configuration, a portion of the valve stem 4 is positioned between the first limiting part 12 and the second limiting part 31 along a preset direction X, thereby preventing relative sliding between the valve stem 4 and the valve core 2 along the preset direction X. This helps improve the stability of torque transmission between the valve stem 4 and the valve core 2. At the same time, positioning the first limiting part 12 in the first mounting hole 13 of the valve body 1 and the second limiting part 31 in the second mounting hole 32 of the valve cover 3 also facilitates the installation and disassembly of the valve stem 4, thereby improving assembly efficiency.

[0067] In some embodiments of this application, such as Figure 1 and Figure 4 As shown, along the preset direction X, the first mounting hole 13 includes a first sub-hole 131 and a second sub-hole 132 connected in sequence. The second sub-hole 132 is connected to the channel 11 through the first sub-hole 131. The inner diameter of the first sub-hole 131 is smaller than the inner diameter of the second sub-hole 132 to form a first limiting part 12.

[0068] Specifically, along the preset direction X, the first sub-hole 131 of the first mounting hole 13 is closer to the channel 11 than the second sub-hole 132. Since the first sub-hole 131 and the second sub-hole 132 are connected, and the inner diameter of the first sub-hole 131 is smaller than the inner diameter of the second sub-hole 132, a first stepped surface is formed at the connection between the first sub-hole 131 and the second sub-hole 132, that is, the first limiting part 12 is constructed as the first stepped surface.

[0069] Furthermore, the third limiting part of the valve stem 4 is constructed as a third stepped surface. The valve stem 4 includes a first sub-shaft and a second sub-shaft connected in sequence. Along the preset direction X, the first sub-shaft is connected to the valve core 2, and the outer diameter of the first sub-shaft is smaller than the outer diameter of the second sub-shaft. Thus, a third stepped surface is formed at the connection between the first sub-shaft and the second sub-shaft.

[0070] When the valve stem 4 and valve core 2 are assembled together, the first sub-shaft passes through the first sub-hole 131 and extends into the channel 11 to connect with the valve core 2. Part of the second sub-shaft is located in the second sub-hole 132, and the third step surface of the valve stem 4 is fitted with the first step surface in a preset direction X. This not only achieves axial positioning of the valve stem 4, but also ensures the reliability of the positioning by limiting the first step surface and the third step surface through surface contact, which reduces the risk of positioning failure.

[0071] In some embodiments of this application, such as Figure 2 As shown, the first bushing 5 also includes a second section 52 connected to the first section 51. Along the preset direction X, the second section 52 extends toward the direction close to the channel 11, and part of the second section 52 is disposed between the valve stem 4 and the inner circumferential surface of the first sub-hole 131.

[0072] Specifically, the first bushing 5 can be constructed in an L-shape. The first section 51 of the first bushing 5 is horizontally positioned, and the second section 52 of the first bushing 5 extends downward along a preset direction X. Part of the second section 52 is positioned between the valve stem 4 and the inner circumferential surface of the first sub-hole 131. With this configuration, when the valve stem 4 rotates, the valve stem 4 does not contact the inner circumferential surface of the first sub-hole 131. The first bushing 5, as a wear-resistant material (usually softer than the valve stem 4 or valve body 1 material), is used to withstand friction, thereby better protecting the valve stem 4 and valve body 1. This is beneficial for further improving the service life of the valve body 1 or valve stem 4, and thus for further improving the service life of the regulating ball valve 100.

[0073] In some embodiments of this application, such as Figure 2 As shown, the first bushing 5 also includes a third section 53 connected to the first section 51. Along the preset direction X, the third section 53 extends in a direction away from the channel 11, and a portion of the third section 53 is disposed between the valve stem 4 and the inner circumferential surface of the second sub-hole 132.

[0074] Specifically, the first bushing 5 can be constructed in a Z-shape. The first section 51 of the first bushing 5 is horizontally positioned, the second section 52 of the first bushing 5 extends downward along a preset direction X, and the third section 53 of the first bushing 5 extends upward along a preset direction X. Along the radial direction of the valve stem 4, the second section 52 and the third section 53 are spaced apart, and parts of the three sections 53 are located between the valve stem 4 and the inner circumferential surface of the second sub-hole 132. With this configuration, when the valve stem 4 rotates, the valve stem 4 does not contact the inner circumferential surface of the first sub-hole 131. The first bushing 5, as a wear-resistant material (usually softer than the valve stem 4 or valve body 1 material), is used to withstand friction, thereby better protecting the valve stem 4 and valve body 1, which is beneficial to further improving the service life of the valve body 1 or valve stem 4.

[0075] In some embodiments of this application, such as Figure 1 and Figure 3 As shown, the regulating ball valve 100 also includes a second bushing 6, which is sleeved on the valve stem 4. The second bushing 6 includes a fourth section 61, which is located between the first limiting part 12 and the second limiting part 31 along a preset direction X. A portion of the fourth section 61 is installed between the valve stem 4 and the second limiting part 31.

[0076] It should be noted that when the valve stem 4 rotates, there may be significant friction between the valve stem 4 and the second limiting part 31. In order to improve the service life of the valve cover 3 or the valve stem 4 and to ensure the normal rotation of the valve stem 4, this application provides a second bushing 6 at the second limiting part 31.

[0077] Specifically, such as Figure 2 As shown, the second bushing 6 is sleeved on the valve stem 4. Along the preset direction X, the fourth segment 61 of the second bushing 6 is located between the first limiting part 12 and the second limiting part 31. Part of the fourth segment 61 is installed between the valve stem 4 and the second limiting part 31. Optionally, part of the fourth segment 61 abuts between the valve stem 4 and the second limiting part 31. With this arrangement, when the valve stem 4 rotates, the valve stem 4 does not contact the second limiting part 31. The valve stem 4 rotates relative to the second bushing 6. The second bushing 6, as a wear-resistant material (usually softer than the valve stem 4 or valve cover 3 material), can withstand friction, thereby better protecting the valve stem 4 and valve cover 3. When the second bushing 6 is worn, it can be directly disassembled and replaced. This helps to improve the service life of the valve cover 3 or valve stem 4, and further improves the service life of the regulating ball valve 100.

[0078] In some embodiments of this application, such as Figure 1 and Figure 3 As shown, along the preset direction X, the second mounting hole 32 includes a third sub-hole 321 and a fourth sub-hole 322 connected in sequence. The fourth sub-hole 322 is connected to the second sub-hole 132 through the third sub-hole 321. The inner diameter of the fourth sub-hole 322 is smaller than the inner diameter of the third sub-hole 321 to form a second limiting part 31.

[0079] Specifically, along the preset direction X, the third sub-hole 321 of the second mounting hole 32 is closer to the second sub-hole 132 than the fourth sub-hole 322. Since the third sub-hole 321 and the fourth sub-hole 322 are connected, and the inner diameter of the fourth sub-hole 322 is smaller than the inner diameter of the third sub-hole 321, a second stepped surface is formed at the connection between the third sub-hole 321 and the fourth sub-hole 322, that is, the second limiting part 31 is constructed as a second stepped surface.

[0080] Furthermore, the fourth limiting part of the valve stem 4 is constructed as a fourth stepped surface. The valve stem 4 also includes a third sub-shaft connected to the second sub-shaft. Along the preset direction X, the third sub-shaft is located on the side of the second sub-shaft away from the first sub-shaft, and the outer diameter of the third sub-shaft is smaller than the outer diameter of the second sub-shaft. Thus, a third stepped surface is formed at the connection between the third sub-shaft and the second sub-shaft.

[0081] When the valve cover 3 is assembled with the valve body 1, the third sub-shaft passes through the fourth sub-hole 322, and part of the second sub-shaft is located in the third sub-hole 321. The fourth step surface of the valve stem 4 is fitted with the second step surface in a preset direction X. This not only achieves axial positioning of the valve stem 4, but also ensures the reliability of the positioning by limiting the second step surface and the fourth step surface through surface contact, which reduces the risk of positioning failure.

[0082] In some embodiments of this application, such as Figure 1 and Figure 3 As shown, the second bushing 6 also includes a fifth section 62 connected to the fourth section 61. Along the preset direction X, the fifth section 62 extends in a direction away from the channel 11, and a portion of the fifth section 62 is disposed between the valve stem 4 and the inner circumferential surface of the fourth sub-hole 322.

[0083] Specifically, the second bushing 6 can also be constructed in an L-shape. The fourth section 61 of the second bushing 6 is horizontally positioned, and the fifth section 62 of the second bushing 6 extends upward along a preset direction X. Part of the fifth section 62 is positioned between the valve stem 4 and the inner circumferential surface of the fourth sub-hole 322. With this configuration, when the valve stem 4 rotates, the valve stem 4 does not contact the inner circumferential surface of the fourth sub-hole 322. The second bushing 6, as a wear-resistant material (usually softer than the valve stem 4 or valve cover 3 material), is used to withstand friction, thereby better protecting the valve stem 4 and valve cover 3. This is beneficial for further improving the service life of the valve body 1 or valve cover 3, and thus for further improving the service life of the regulating ball valve 100.

[0084] Optionally, the second bushing 6 also includes a sixth segment connected to the fourth segment 61. The sixth segment extends in a predetermined direction X toward the direction close to the channel 11, and a portion of the sixth segment is positioned between the valve stem 4 and the inner circumferential surface of the third sub-hole 321. With this configuration, when the valve stem 4 rotates, it does not contact the inner circumferential surface of the third sub-hole 321, thus better protecting the valve stem 4 and the valve cover 3, and further improving the service life of the valve cover 3 or the valve stem 4.

[0085] In some embodiments of this application, the regulating ball valve 100 further includes a first valve seat 7, which is at least partially installed in the valve body 1. The valve stem 4 is disposed opposite to and spaced apart from the first valve seat 7 along a preset direction X. The valve core 2 is connected to the first valve seat 7 and is rotatable relative to the first valve seat 7 along the axial direction of the valve stem 4. The axial direction of the valve stem 4 is parallel to the preset direction X.

[0086] Specifically, along the preset direction X, the first valve seat 7 is fixedly installed inside the valve body 1 and is positioned opposite to the valve stem 4. The first valve seat 7 is located directly below the valve stem 4. The valve core 2 is connected between the valve stem 4 and the first valve seat 7. When the valve stem 4 drives the valve core 2 to rotate along the axial direction of the valve stem 4, the valve core 2 can rotate relative to the first valve seat 7. In other words, the first valve seat 7 can provide a certain guiding effect on the rotation of the valve core 2, which is beneficial to improving the stability of the rotation of the valve core 2, thereby further improving the flow regulation accuracy of the regulating ball valve 100.

[0087] In some embodiments of this application, such as Figure 1 As shown, the regulating ball valve 100 also includes a second valve seat 10 and a sealing ring 8. The second valve seat 10 is fixedly installed in the channel 11. The second valve seat 10 is provided with a flow channel. The liquid inlet of the valve body 1 is connected to the liquid outlet of the valve body 1 through the flow channel. Along the axial direction of the channel 11, the second valve seat 10 is located on one side of the valve core 2. The sealing ring 8 is disposed on the second valve seat 10, and part of the sealing ring 8 is abutted between the valve core 2 and the second valve seat 10.

[0088] Specifically, according to the regulating ball valve 100 Figure 1Taking the placement direction shown as an example, along the axial direction of the channel 11, the second valve seat 10 is located on the left side of the valve core 2. The second valve seat 10 is fixedly installed in the channel 11. The second valve seat 10 is provided with a sealing ring 8, and part of the sealing ring 8 is abutted between the valve core 2 and the second valve seat 10. The valve core 2 is provided with a flow opening. When a torque is applied to drive the valve stem 4 to rotate, the valve stem 4 drives the valve core 2 to rotate synchronously. The flow opening is adjusted by controlling the rotation angle. It can be understood that the sealing ring 8 does not hinder the rotation of the valve core 2 in the channel 11. The sealing ring 8 will deform under the abutment action of the valve core 2 and the second valve seat 10. This arrangement makes one side of the sealing ring 8 fit with the valve core 2 and the other side fit with the second valve seat 10, thereby achieving the sealing function and preventing fluid from entering the gap between the valve core 2 and the first mounting seat.

[0089] In some embodiments of this application, such as Figure 1 As shown, the regulating ball valve 100 also includes an end cover 9, a portion of which is disposed in the channel 11, and the end cover 9 is threadedly assembled and fixed to the channel 11. The end cover 9 has a mounting cavity 91, and the second valve seat 10 is fixedly installed in the mounting cavity 91.

[0090] Specifically, the outer circumferential surface of the end cap 9 has external threads, and the inner circumferential surface of the channel 11 has internal threads. The end cap 9 and the channel 11 are fixed by thread assembly, and the end cap 9 has a mounting cavity 91. The second valve seat 10 is fixedly installed in the mounting cavity 91. When assembling the regulating ball valve 100, the sealing ring 8 is first fixed in the sealing groove of the second valve seat 10, and then the second valve seat 10 is fixed in the mounting cavity 91. The fixing method includes, but is not limited to, interference fit. Finally, the end cap 9 is threaded into the channel 11 to ensure that part of the sealing ring 8 is abutted between the valve core 2 and the second valve seat 10. With this setting, the whole assembly process is simple and convenient, which is conducive to further improving the assembly efficiency of the regulating ball valve 100.

[0091] The piping system according to a second aspect of this application includes the regulating ball valve 100 of the first aspect embodiment.

[0092] According to the pipeline system proposed in the embodiments of this application, by setting the above-mentioned regulating ball valve 100, the regulating ball valve 100 can restrict the movement of the valve stem 4 along the preset direction X by using the first limiting part 12 and the second limiting part 31, thereby preventing the valve stem 4 from sliding relative to the valve core 2 along its own axis, which is beneficial to improving the stability of torque transmission between the valve stem 4 and the valve core 2. At the same time, the outer peripheral surface of the valve stem 4 is fitted with a first bushing 5. Along the preset direction X, the first section 51 of the first bushing 5 is located between the first limiting part 12 and the second limiting part 31, and part of the first section 51 is installed between the valve stem 4 and the first limiting part 12. With this arrangement, the valve stem 4 does not contact the first limiting part 12. When the valve stem 4 rotates relative to the first section 51, the first section 51 of the first bushing 5 is used to bear friction, thereby better protecting the valve stem 4 and the valve body 1, which is beneficial to improving the service life and reliability of the valve stem 4.

[0093] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0094] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0095] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

[0096] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A regulating ball valve, characterized in that, include: The valve body (1) has a channel (11); The valve core (2) is rotatably disposed in the channel (11); The valve cover (3) is fixedly connected to the valve body (1), and the valve cover (3) and the valve body (1) form an installation channel extending along a preset direction (X). A first limiting part (12) and a second limiting part (31) are provided in the installation channel. Along the preset direction (X), the first limiting part (12) and the second limiting part (31) are arranged opposite to each other and spaced apart. A valve stem (4) is provided in the mounting channel, and a portion of the valve stem (4) is limited between the first limiting part (12) and the second limiting part (31). The valve stem (4) is connected to the valve core (2), and the valve stem (4) is adapted to drive the valve core (2) to rotate to regulate the flow rate of fluid flowing through the orifice (11). A first bushing (5) is sleeved on the valve stem (4). The first bushing (5) includes a first segment (51) along the preset direction (X). The first segment (51) is located between the first limiting part (12) and the second limiting part (31), and a portion of the first segment (51) is installed between the valve stem (4) and the first limiting part (12).

2. The regulating ball valve according to claim 1, characterized in that, The valve body (1) has a first mounting hole (13), and the first limiting part (12) is provided in the first mounting hole (13). Along the preset direction (X), the first mounting hole (13) communicates with the channel (11). The valve cover (3) has a second mounting hole (32), and a second limiting part (31) is provided in the second mounting hole (32). Along the preset direction (X), the first mounting hole (13) and the second mounting hole (32) communicate to form the mounting channel.

3. The regulating ball valve according to claim 2, characterized in that, Along the preset direction (X), the first mounting hole (13) includes a first sub-hole (131) and a second sub-hole (132) connected in sequence. The second sub-hole (132) is connected to the channel (11) through the first sub-hole (131). The inner diameter of the first sub-hole (131) is smaller than the inner diameter of the second sub-hole (132) to form the first limiting part (12).

4. The regulating ball valve according to claim 3, characterized in that, The first bushing (5) also includes a second section (52) connected to the first section (51). Along the preset direction (X), the second section (52) extends toward the direction close to the channel (11), and a portion of the second section (52) is disposed between the valve stem (4) and the inner circumferential surface of the first sub-hole (131).

5. The regulating ball valve according to claim 4, characterized in that, The first bushing (5) also includes a third section (53) connected to the first section (51). Along the preset direction (X), the third section (53) extends away from the channel (11), and a portion of the third section (53) is disposed between the valve stem (4) and the inner circumferential surface of the second sub-hole (132).

6. The regulating ball valve according to any one of claims 2-5, characterized in that, The regulating ball valve (100) further includes a second bushing (6) sleeved on the valve stem (4). The second bushing (6) includes a fourth segment (61) along the preset direction (X). The fourth segment (61) is located between the first limiting part (12) and the second limiting part (31), and part of the fourth segment (61) is installed between the valve stem (4) and the second limiting part (31).

7. The regulating ball valve according to claim 6, characterized in that, Along the preset direction (X), the second mounting hole (32) includes a third sub-hole (321) and a fourth sub-hole (322) connected in sequence. The fourth sub-hole (322) is connected to the second sub-hole (132) through the third sub-hole (321). The inner diameter of the fourth sub-hole (322) is smaller than the inner diameter of the third sub-hole (321) to form the second limiting part (31).

8. The regulating ball valve according to claim 7, characterized in that, The second bushing (6) also includes a fifth segment (62) connected to the fourth segment (61). Along the preset direction (X), the fifth segment (62) extends away from the channel (11), and a portion of the fifth segment (62) is disposed between the valve stem (4) and the inner circumferential surface of the fourth sub-hole (322).

9. The regulating ball valve according to claim 1, characterized in that, The regulating ball valve (100) further includes a first valve seat (7), which is at least partially installed in the valve body (1). Along the preset direction (X), the valve stem (4) is disposed opposite to and spaced apart from the first valve seat (7). The valve core (2) is connected to the first valve seat (7) and is rotatable relative to the first valve seat (7) along the axial direction of the valve stem (4). The axial direction of the valve stem (4) is parallel to the preset direction (X).

10. A piping system, characterized in that, Includes the regulating ball valve (100) as described in any one of claims 1-9.

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