Two-way interlocked ball valve assembly

Abstract

The application discloses a bidirectional interlocking ball valve assembly, which comprises a valve body, a valve core, a valve rod and a sealing assembly. The valve body is provided with a flow channel inner cavity; the valve core is arranged in the flow channel inner cavity and is provided with a driving interface; one end of the valve rod is inserted into the driving interface, and the valve rod can rotate around its own axis; the valve rod is used for driving the valve core to rotate around the axis of the valve rod so as to control the conduction and interruption of the flow channel inner cavity; the sealing assembly comprises a hard valve seat and an elastic pre-tightening piece; the hard valve seat is embedded in the flow channel inner cavity and surrounds the outer periphery of the valve core; the hard valve seat is used for sealing the valve body and the valve core; an isolation cavity is formed between the hard valve seat and the valve body, the elastic pre-tightening piece is clamped in the isolation cavity, the hard valve seat isolates the elastic pre-tightening piece from the flow channel inner cavity, and the elastic pre-tightening piece is used for applying a pre-tightening force to the hard valve seat towards the valve core so as to maintain the sealing of the hard valve seat to the valve core. The application has good sealing performance.

Description

Technical Field

[0001] This invention relates to the field of pipeline connection technology, and more particularly to a bidirectional interlocking ball valve assembly. Background Technology

[0002] An interlock valve is an on / off control element used in fluid pipeline systems. It typically includes a valve body, valve stem, ball, and a sealing seat located within the flow channel. During operation, rotating the handle drives the valve stem, which in turn rotates the ball within the valve body, thereby opening or blocking the flow of the medium.

[0003] However, patent document CN120487994A describes an interlock valve whose valve seat is made of pure rubber and is directly exposed in the valve body flow channel, contacting the pipeline medium. In actual long-term use, the sealing components are in direct contact with the medium, making them susceptible to corrosion and resulting in poor sealing performance. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention aims to provide a bidirectional interlocking ball valve assembly with good sealing performance.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A two-way interlocking ball valve assembly includes:

[0007] Valve body, the valve body having a flow channel cavity;

[0008] A valve core is disposed in the inner cavity of the flow channel and has a drive interface;

[0009] A valve stem, one end of which is inserted into the drive interface, is rotatable about its own axis; the valve stem is used to drive the valve core to rotate about the axis of the valve stem, so as to control the opening and closing of the flow channel cavity;

[0010] A sealing assembly includes a rigid valve seat and an elastic preload member. The rigid valve seat is embedded in the inner cavity of the flow channel and surrounds the outer periphery of the valve core. The rigid valve seat is used to seal the valve body and the valve core. An isolation cavity is formed between the rigid valve seat and the valve body. The elastic preload member is clamped in the isolation cavity, and the rigid valve seat isolates the elastic preload member from the inner cavity of the flow channel. The elastic preload member is used to apply a preload force toward the valve core to the rigid valve seat to maintain the seal of the rigid valve seat on the valve core.

[0011] Furthermore, the drive interface is a blind hole opened radially along the valve core.

[0012] Furthermore, the elastic preload element is a rubber ring.

[0013] Furthermore, the bidirectional interlocking ball valve assembly also includes a handle and a screw. The handle has a mounting hole and is used to drive the valve stem to rotate along the axial direction of the valve stem. The valve stem passes through the valve body, with one end of the valve stem inserted into the blind hole and the other end of the valve stem located in the mounting hole. The screw passes through the mounting hole and is threadedly connected to the end of the valve stem away from the valve core.

[0014] Furthermore, the surface of the handle is provided with a flow direction indicator, which is used to indicate whether the valve core is in an open or closed state.

[0015] Furthermore, the side of the handle is provided with multiple anti-slip teeth, which are spaced apart along the length of the handle.

[0016] Furthermore, the handle is provided with a rotation control structure, which includes a button, an elastic element, and a ball bearing; the handle has a mounting groove that extends along a horizontal plane perpendicular to the extension direction of the valve body; the button is disposed in the mounting groove and has a receiving groove; the elastic element is disposed in the mounting groove and abuts against the button and the handle respectively; the valve body has a limiting groove; the two ends of the ball bearing abut against the button and the valve body respectively; the receiving groove, the ball bearing, and the elastic element are arranged sequentially along the depth direction of the receiving groove; when the button is not pressed, the ball bearing is pressed and locked in the limiting groove by the end face of the button; when the button is pressed, the receiving groove moves in a direction close to the ball bearing until the ball bearing enters the receiving groove and disengages from the limiting groove, thereby releasing the rotation restriction on the handle.

[0017] Furthermore, the bidirectional interlocking ball valve assembly also includes a connector, which is located at one end of the valve body and connected to the valve body; the end of the connector away from the valve body is provided with a protrusion and a groove; when two bidirectional interlocking ball valve assemblies are docked, the protrusions of the two connectors are screwed into the grooves of the other to lock the two connectors together.

[0018] Furthermore, the bidirectional interlocking ball valve assembly also includes a movable latch, which is installed on the connector and located within the groove. The movable latch is used to remain locked when the connector is not mated to restrict the rotation of the handle; the movable latch is also used to unlock after the two connectors are mated to allow the handle to rotate.

[0019] Furthermore, one end of the movable latch is provided with a locking hook, and the other end is provided with a protruding pin. The middle part of the movable latch is pivotally connected to the connector so that the movable latch can rotate around the middle part of the movable latch. The handle is provided with a slide rail, which includes a straight rail, a guide rail, and a stop rail. In the initial state, the protruding pin is located on the stop rail. When the protrusion is screwed into the groove, the protrusion presses against the movable latch to force the protruding pin to move to the guide rail. When the handle is rotated to open the valve core, the protruding pin moves from the guide rail to the straight rail, driving the movable latch to rotate around the middle part of the movable latch so that the locking hook engages and locks with the protrusion.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. The sealing assembly includes a rigid valve seat and an elastic preload element. The rigid valve seat is embedded in the inner cavity of the flow channel and surrounds the outer periphery of the valve core. The rigid valve seat is used to seal the valve body and the valve core. This ensures that when the valve core rotates to control the opening or closing of the pipeline, the rigid valve seat can always physically surround and limit the valve core. Therefore, the valve core can effectively block or open the medium in the inner cavity of the flow channel by means of rotational movement, ensuring that the ball valve assembly has normal on / off capability.

[0022] 2. Based on the isolation cavity formed between the valve seat and the valve body. The elastic preload is enclosed inside the isolation cavity. When the medium flows in the inner cavity of the flow channel, it cannot pass through the rigid valve seat to enter the isolation cavity. Therefore, the elastic preload is always physically isolated from the pipeline medium, preventing material swelling and aging caused by direct exposure to the inner cavity of the flow channel and prolonged contact with corrosive media. This improves the long-term anti-aging reliability, corrosion resistance and sealing effect of the sealing assembly when facing corrosive media conditions.

[0023] 3. Based on the elastic preload being clamped within the isolation cavity, and the rigid valve seat isolating the elastic preload from the flow channel cavity, the elastic preload applies a preload force towards the valve core to the rigid valve seat to maintain the seal between the rigid valve seat and the valve core. The elastic preload can apply a continuous preload force towards the valve core to the rigid valve seat. Therefore, even after the valve undergoes multiple opening and closing cycles over a long period, even if the rigid valve seat wears due to continuous friction with the valve core, the elastic preload can still push the rigid valve seat towards the valve core through its own elastic rebound. This compensates for the clearance caused by the wear of the rigid valve seat, ensuring a long-term effective seal between the rigid valve seat and the valve core, thus improving the sealing effect. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the bidirectional interlocking ball valve assembly of the present invention;

[0025] Figure 2 for Figure 1A sectional view;

[0026] Figure 3 Exploded view of the valve core and sealing assembly;

[0027] Figure 4 for Figure 3 A sectional view;

[0028] Figure 5 for Figure 1 A cross-sectional view from another perspective;

[0029] Figure 6 for Figure 1 Enlarged view of point A in the middle;

[0030] Figure 7 This is a schematic diagram of the movable locking mechanism.

[0031] In the diagram: 1. Valve body; 2. Valve core; 21. Drive interface; 3. Valve stem; 4. Sealing assembly; 41. Rigid valve seat; 42. Elastic preload element; 5. Isolation chamber; 6. Handle; 61. Mounting hole; 62. Slide rail; 621. Straight rail; 622. Guide rail; 623. Stop rail; 7. Screw; 8. Flow direction indicator; 9. Anti-slip serration; 10. Rotation control structure; 101. Button; 1011. Receiving groove; 102. Elastic element; 103. Ball bearing; 11. Limiting groove; 12. Connector; 121. Protrusion; 122. Groove; 13. Movable latch; 131. Locking hook; 132. Protruding pin. Detailed Implementation

[0032] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0033] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] See Figures 1-7 This paper illustrates a preferred embodiment of the bidirectional interlocking ball valve assembly of the present invention, which includes a valve body 1, a valve core 2, a valve stem 3, and a sealing assembly 4.

[0036] Valve body 1 has a flow channel cavity.

[0037] The inner cavity of the flow channel provides space for the flow of fluid in the pipeline. Depending on the installation method of the two-way interlocking ball valve assembly in the pipeline system, the end of the valve body 1 can be directly connected to a flange, connector 12, or other pipe fittings. The valve body 1, as the outer shell component of the ball valve assembly, forms a pressure-bearing chamber inside to carry the medium.

[0038] The valve core 2 is located in the inner cavity of the flow channel, and the valve core 2 has a drive interface 21.

[0039] The valve core 2 is disposed within the flow channel cavity of the valve body 1. The valve core 2 is the core opening and closing component used to control the opening or closing of the flow channel cavity. A drive interface 21 is provided on the valve core 2, extending radially inward. The specific structural form of the drive interface 21 can be adaptively designed according to actual assembly and torque transmission requirements; it can be a straight groove, a cross groove, a square hole or polygonal hole machined radially along the valve core 2, or a blind hole that penetrates or does not penetrate the valve core 2. The position of the drive interface 21 corresponds to the drive end of the valve stem 3, so that the valve stem 3 can be directly inserted into the drive interface 21.

[0040] One end of the valve stem 3 is inserted into the drive interface 21, and the valve stem 3 can rotate around its own axis; the valve stem 3 is used to drive the valve core 2 to rotate around the axis of the valve stem 3 in order to control the opening and closing of the flow channel cavity.

[0041] The valve stem 3 passes through the valve body 1, with one end directly inserted into the drive interface 21 of the valve core 2. The valve stem 3 itself can rotate circumferentially around its own axis. The drive end of the valve stem 3 can be configured as a flat or square connector 12 that matches the shape of the drive interface 21. During the rotation of the valve stem 3 around its own axis, the drive end of the valve stem 3 makes physical contact and transmits torque with the inner wall of the drive interface 21, thereby driving the valve core 2 to rotate synchronously in the flow channel cavity of the valve body 1. The rotation angle of the valve core 2 in the flow channel cavity directly determines the communication state of the flow channel inside the flow channel cavity. When the valve core 2 rotates to a specific angle, the fluid medium can flow in along the flow channel at one end of the valve body 1 and flow out from the other end, realizing the conduction of the flow channel cavity; when the valve core 2 rotates to another specific angle, the solid part of the valve core 2 completely blocks the flow channel inside the valve body 1, realizing the cut-off.

[0042] The sealing assembly 4 includes a rigid valve seat 41 and an elastic preload member 42. The rigid valve seat 41 is embedded in the inner cavity of the flow channel and surrounds the outer periphery of the valve core 2. The rigid valve seat 41 is used to seal the valve body 1 and the valve core 2. An isolation cavity 5 is formed between the rigid valve seat 41 and the valve body 1. The elastic preload member 42 is sandwiched in the isolation cavity 5, and the rigid valve seat 41 isolates the elastic preload member 42 from the inner cavity of the flow channel. The elastic preload member 42 is used to apply a preload force toward the valve core 2 to the rigid valve seat 41 to maintain the seal of the rigid valve seat 41 on the valve core 2.

[0043] The sealing assembly 4 is disposed within the flow channel cavity and is used to isolate the valve cavity when the valve core 2 is in the cut-off state. Specifically, the sealing assembly 4 includes a rigid valve seat 41 and an elastic preload member 42. The rigid valve seat 41 is embedded in the flow channel cavity of the valve body 1 and arranged around the outer periphery of the valve core 2. After assembly, the inner wall of the rigid valve seat 41 and the outer wall of the valve core 2 are tightly fitted together, forming a dynamic sealing contact surface. The rigid valve seat 41 is made of a non-soft material, and its hardness and wear resistance allow it to withstand the long-term impact of the medium within the pipeline.

[0044] The working principle of the bidirectional interlocking ball valve assembly of the present invention is as follows: During use, when the operator applies external force to rotate the handle 6, the valve stem 3 rotates around its own axis. The driving end of the valve stem 3 is inserted into the driving interface 21 of the valve core 2, and the two move synchronously. The rotational power of the valve stem 3 is transmitted to the valve core 2, thereby causing the valve core 2 to generate a corresponding rotational displacement in the inner cavity of the flow channel. When the channel inside the valve core 2 is consistent with the extension direction of the inner cavity of the flow channel, the inner cavity of the flow channel is in a conductive state, and the medium can pass smoothly; when the valve core 2 rotates, its outer circumferential solid part blocks the channel of the inner cavity of the flow channel, the inner cavity of the flow channel is in a cut-off state, and the medium stops flowing. When the valve is working, the inner wall of the rigid valve seat 41 is fitted with the outer wall of the valve core 2 to form a seal, and the elastic pre-tightening member 42 is placed inside the isolation cavity 5 formed by the rigid valve seat 41 and the valve body 1. The rigid valve seat 41 separates the isolation chamber 5 from the inner cavity of the flow channel. Therefore, when the medium passes through the inner cavity of the flow channel, the medium is completely blocked by the rigid valve seat 41 and cannot directly contact the elastic preload 42 in the isolation chamber 5. The elastic preload 42 remains compressed in the isolation chamber 5 for a long time, thereby applying a continuous preload force pointing towards the valve core 2 on the outside of the rigid valve seat 41, pushing the rigid valve seat 41 to press the valve core 2, maintaining a tight fit between the two contact surfaces. After the ball valve assembly undergoes multiple opening and closing cycles, the outer wall of the valve core 2 and the inner wall of the rigid valve seat 41 will experience slight wear on the sealing surface of the rigid valve seat 41 due to continuous friction. In this case, the elastic preload 42 in the isolation chamber 5 can convert its stored potential energy into a continuous thrust through its own elastic release, compensating for the fit clearance caused by the wear of the rigid valve seat 41. The elastic preload 42 continuously pushes the rigid valve seat 41 toward the valve core 2, so that its inner wall can always maintain a firm contact with the outer wall of the valve core 2, thereby ensuring that the rigid valve seat 41 can provide reliable sealing force to the valve core 2 throughout the entire service life of the valve.

[0045] The valve body 1 has a flow channel cavity; the valve core 2 is located within the flow channel cavity and has a drive interface 21; one end of the valve stem 3 is inserted into the drive interface 21, and the valve stem 3 can rotate around its own axis; the valve stem 3 is used to drive the valve core 2 to rotate around its axis, thereby controlling the opening and closing of the flow channel cavity. The valve body 1 has a flow channel cavity, and the valve core 2 is placed within this cavity, allowing the valve core 2 to be securely installed in a pre-set position within the valve body 1 cavity, creating a physical basis for subsequent control of the pipeline medium flow. One end of the valve stem 3 is inserted into the drive interface 21 of the valve core 2, and the valve stem 3 itself can rotate around its axis. When an external force acts on the valve stem 3 and causes it to rotate, the rotational torque can be stably transmitted to the valve core 2 through this interface structure, thereby causing the valve core 2 to rotate synchronously with the valve stem 3 within the flow channel cavity. When the valve core 2 rotates to a specific angle, the inner cavity of the flow channel enters the conducting state; when the valve core 2 rotates to another angle, the inner cavity of the flow channel is in the cut-off state; thus, the control of the on / off state of the bidirectional interlocking ball valve assembly pipeline is realized.

[0046] The sealing assembly 4 includes a rigid valve seat 41 and an elastic preload member 42. The rigid valve seat 41 is embedded in the inner cavity of the flow channel and surrounds the outer periphery of the valve core 2. The rigid valve seat 41 is used to seal the valve body 1 and the valve core 2. This ensures that when the valve core 2 rotates to control the opening or closing of the pipeline, the rigid valve seat 41 can always physically surround and limit the valve core 2. Therefore, the valve core 2 can effectively block or open the medium in the inner cavity of the flow channel by means of rotational movement, ensuring that the ball valve assembly has normal opening and closing capabilities.

[0047] An isolation cavity 5 is formed between the valve seat and the valve body 1. The elastic preload 42 is enclosed inside the isolation cavity 5. When the medium flows in the inner cavity of the flow channel, it cannot pass through the rigid valve seat 41 to enter the isolation cavity 5. Therefore, the elastic preload 42 is always physically isolated from the pipeline medium, preventing material swelling and aging caused by direct exposure to the inner cavity of the flow channel and long-term contact with corrosive media. This improves the long-term anti-aging reliability, anti-corrosion ability and sealing effect of the sealing assembly 4 when facing corrosive media conditions.

[0048] The elastic preload 42 is clamped within the isolation cavity 5, and the rigid valve seat 41 isolates the elastic preload 42 from the inner cavity of the flow channel. The elastic preload 42 applies a preload force towards the valve core 2 to the rigid valve seat 41 to maintain the seal between the rigid valve seat 41 and the valve core 2. The elastic preload 42 can apply a continuous preload force towards the valve core 2 to the rigid valve seat 41. Therefore, even after the valve undergoes multiple long-term cycles of opening and closing, and even if the rigid valve seat 41 experiences material wear due to continuous friction with the valve core 2, the elastic preload 42 can still push the rigid valve seat 41 towards the valve core 2 through its own elastic rebound. This compensates for the mating clearance caused by the wear of the rigid valve seat 41, ensuring a long-term effective seal between the rigid valve seat 41 and the valve core 2, thus improving the sealing effect.

[0049] Preferably, the drive interface 21 is a blind hole radially opened along the valve core 2. This arrangement allows the drive end of the valve stem 3 to be stably inserted into the bottom of the blind hole without penetrating the valve core 2. Therefore, there is no need for an additional sealing plug or gasket inside the valve core 2 to seal the through hole, reducing the risk of pipeline medium leakage due to the through hole, simplifying the structure of the valve core 2 and maintaining its own sealing integrity. It should also be noted that the position of the blind hole on the valve core 2 is preferably consistent with the insertion direction of the valve stem 3 to reduce the eccentric force during assembly. As an alternative arrangement, if the valve core 2 needs to withstand higher torsional strength, the blind hole can also be replaced with a stepped hole. In this case, the insertion end of the valve stem 3 has a corresponding stepped structure to cooperate with it, but this method requires additional machining steps for the stepped surface.

[0050] Preferably, the elastic preload element 42 is a rubber ring. This arrangement allows it to form an elastic source that continuously releases outward thrust after being clamped inside the isolation cavity 5. Therefore, when the rigid valve seat 41 experiences slight wear due to long-term friction, the rubber ring can release its own deformation to push the rigid valve seat 41 towards the valve core 2, filling the gap caused by the wear of the rigid valve seat 41, thus achieving the effect of maintaining a constant sealing force of the rigid valve seat 41 on the valve core 2 for a long time. It should also be noted that the material selection of the rubber ring usually needs to be determined based on the actual operating temperature of the valve and the properties of the contact medium. As an alternative, the elastic preload element 42 is not limited to a rubber ring; a metal wave spring or disc spring can also be used. When the operating temperature of the valve exceeds the tolerance limit of rubber, the reliability of the metal spring is better than that of the rubber ring.

[0051] Preferably, the bidirectional interlocking ball valve assembly further includes a handle 6 and a screw 7. The handle 6 has a mounting hole 61 and is used to drive the valve stem 3 to rotate axially along the valve stem 3. The valve stem 3 passes through the valve body 1, with one end inserted into a blind hole and the other end located in the mounting hole 61. The screw 7 passes through the mounting hole 61 and is threadedly connected to the end of the valve stem 3 away from the valve core 2. This arrangement compresses the handle 6 and the valve stem 3 into a single rotating unit. Therefore, when the operator grips the handle 6 and applies force, the external force can be directly transmitted to the valve stem 3 through the mounting hole 61 and the valve stem 3, causing it to rotate. This achieves a stable connection between the handle 6 and the valve stem 3, preventing the handle 6 from disengaging from the valve stem 3 during repeated twisting and ensuring effective transmission of rotational power. It should also be noted that the screw 7 usually requires preload during installation to ensure that the handle 6 does not rotate relative to the valve stem 3 when subjected to external force. As an alternative setup, the fixed connection between the handle 6 and the valve stem 3 can also be a pin-through fit or a square shaft-square hole fit. Both methods can achieve torque transmission, but the ease of operation during disassembly and maintenance will differ.

[0052] Preferably, the surface of the handle 6 is provided with a flow direction indicator 8, which indicates whether the valve core 2 is in the open or closed state. This design allows the operator to directly determine the current operating state of the valve core 2 simply by observing the indicator on the surface of the handle 6 without disassembling the valve. Therefore, the operator can directly judge whether the pipeline is currently in a conducting or cut-off state based on the visual information presented by the indicator, establishing an external visual correspondence between the physical position of the handle 6 and the internal state of the valve, improving the accuracy and real-time effectiveness of the operator in identifying the current on / off state of the valve. It should also be noted that the flow direction indicator 8 is preferably formed by stamping or screen printing to enhance its durability. As an alternative design, in addition to using text or arrows, the flow direction indicator 8 can also use color differentiation, for example, marking a specific color in one area of ​​the handle 6 to represent open and another color in another area to represent closed.

[0053] Preferably, the side of the handle 6 is provided with multiple anti-slip serrations 9, which are spaced apart along the length of the handle 6. This arrangement increases the contact area between the operator's palm and the side wall of the handle 6 when gripping it, and improves the coefficient of friction. Therefore, when the operator applies force to rotate the valve, it is less likely that the operator's hand will slip off the handle 6, increasing the friction between the operator's hand and the contact surface of the handle 6, and improving the stability and anti-slip effect when the operator applies force to rotate the handle 6. It should also be noted that the anti-slip serrations 9 are preferably located on both sides of the handle 6 at the gripping positions most easily supported by the operator's fingers. As an alternative arrangement, the specific structure of the anti-slip serrations 9 is not limited to the straight strips shown in the figure; it can also adopt a diamond cross-pattern, arc-shaped raised ribs, or knurled structure, all of which have essentially the same effect on enhancing finger grip.

[0054] Preferably, the handle 6 is provided with a rotation control structure 10, which includes a button 101, an elastic element 102, and a ball bearing 103. The handle 6 has a mounting groove that extends along a horizontal plane perpendicular to the extension direction of the valve body 1. The button 101 is disposed in the mounting groove and has a receiving groove 1011. The elastic element 102 is disposed in the mounting groove and abuts against the button 101 and the handle 6 respectively. The valve body 1 has a limiting groove 11, and the two ends of the ball bearing 103 are respectively... Do not abut the button 101 and the valve body 1; the receiving groove 1011, the ball 103 and the elastic element 102 are arranged in sequence along the groove depth direction of the receiving groove 1011; when the button 101 is not pressed, the ball 103 is pressed and locked in the limiting groove 11 by the end face of the button 101; when the button 101 is pressed, the receiving groove 1011 moves in the direction close to the ball 103 until the ball 103 enters the receiving groove 1011 and disengages from the limiting groove 11, thereby releasing the rotation restriction on the handle 6. This configuration ensures that under normal conditions, the ball 103 is pressed into the limiting groove 11 by the bottom surface of the button 101, thus mechanically limiting the handle 6 and preventing it from rotating freely. When an external force actively presses down on the button 101, the receiving groove 1011 moves with the button 101 to the position of the ball 103. The ball 103 enters the receiving groove 1011 and disengages from the limiting groove 11. The pressing action of the button 101 releases the rotational freedom of the handle 6, preventing accidental rotation of the handle 6 and improving the safety of valve operation. It should also be noted that the limiting groove 11 can be located on either the valve stem 3 or the valve body 1. Located on the valve stem 3, it can more directly prevent the relative rotation between the handle 6 and the valve stem 3. As an alternative configuration, the ball 103 can also be replaced with a cylindrical pin or a wedge block, as long as pressing the button 101 creates clearance space for it to exit the limiting groove 11. The elastic element 102 can be a coil spring, or it can be a flexible metal sheet or a flexible washer.

[0055] Preferably, the bidirectional interlocking ball valve assembly further includes a connector 12, which is located at one end of the valve body 1 and connected to the valve body 1. The end of the connector 12 away from the valve body 1 has a protrusion 121 and a groove 122. When two bidirectional interlocking ball valve assemblies are docked, the protrusions 121 of the two connectors 12 screw into each other's grooves 122, thus locking the two connectors 12 together. This arrangement ensures that when two ball valve assemblies with identical structures are docked, the protrusions 121 on the connector 12 can correspondingly screw into the grooves 122 of the other connector 12. Therefore, the connectors 12 cannot be pulled apart axially or rotated relative to each other radially, achieving a mechanical interlocking docking between the ends of the two valve bodies 1, ensuring that the connection of the docked ball valve assembly will not loosen when the pipeline is under stress. It should also be noted that the dimensions of the protrusion 121 and the groove 122 are preferably symmetrical to facilitate bidirectional docking of ball valve assemblies of the same model. As an alternative setting, the locking structure of the connector 12 is not limited to the screw-in type of the protrusion 121 and the groove 122 engaging. It can also be a snap-fit ​​connection, which engages through elastic deformation during docking. However, the operation difficulty during disassembly will be higher than that of the screw-in type.

[0056] Preferably, the bidirectional interlocking ball valve assembly further includes a movable latch 13, which is installed on the connector 12 and located within the groove 122. The movable latch 13 is used to keep locked when the connector 12 is not connected, thus restricting the rotation of the handle 6. The movable latch 13 is also used to unlock after the two connectors 12 are connected, allowing the handle 6 to rotate. This arrangement ensures that the handle 6 cannot be rotated when no connection action occurs, thus the valve assembly is in a standby state. When the valve assembly is connected to another identical valve assembly, the connection action acts on the movable latch 13 and releases its restriction on the handle 6, physically linking the condition for the handle 6 to the connection state of the connector 12. This achieves the effect of preventing the operator from accidentally opening the valve when the connector 12 is not effectively connected, thus preventing media splashing. It should also be noted that the shorter the linkage path between the movable latch 13 and the handle 6, the more direct the response. Therefore, it is preferred to place it on the side of the connector 12 adjacent to the handle 6.

[0057] Preferably, one end of the movable latch 13 is provided with a latch hook 131, and the other end is provided with a protruding pin 132. The middle part of the movable latch 13 is pivotally connected to the connector 12 so that the movable latch 13 can rotate around the middle part of the movable latch 13. The handle 6 is provided with a slide rail 62, which includes a straight rail 621, a guide rail 622, and a stop rail 623. In the initial state, the protruding pin 132 is located in the stop rail 623. When the protrusion 121 is screwed into the groove 122, the protrusion 121 presses against the movable latch 13 to force the protruding pin 132 to move to the guide rail 622. When the handle 6 is rotated to open the valve core 2, the protruding pin 132 moves from the guide rail 622 toward the straight rail 621, driving the movable latch 13 to rotate around the middle part of the movable latch 13 so that the latch hook 131 engages and locks with the protrusion 121. This design ensures that during the initial connection of connector 12, when the protrusion 121 screws into the groove 122, it physically compresses the movable latch 13 and pushes the protruding pin 132 away from the stop rail 623 and into the guide rail 622. Therefore, during the process of opening the valve core 2 and rotating the handle 6, the protruding pin 132 moves along the guide rail 622 towards the straight rail 621 and drives the lever structure to rotate, thereby causing the locking hook 131 to engage and lock with the protrusion 121. This is to utilize the opening action of the handle 6 itself to trigger the latch to lock connector 12 a second time, automating the mechanical locking of connector 12 while simultaneously opening the valve. It should also be noted that the smoothness of the connection between the guide rail 622 and the straight rail 621 directly affects the smoothness of the movement of the protruding pin 132. Therefore, it is preferable to process the transition section of the guide rail 622 into a smooth curved surface; the cross-section of the protruding pin 132 is preferably triangular, as this shape allows it to fit better into the slide rail 62. As an alternative setting, the segmented design of the slide rail 62 can also be replaced by a continuous inclined slide groove, as long as the protruding pin 132 can move along the preset path and complete the engagement of the locking hook 131. However, the continuous slide groove is not as clear as the segmented slide rail 62 in terms of positioning and locking feedback. The cross-section of the protruding pin 132 can also be circular or rectangular.

[0058] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0060] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A two-way interlocking ball valve assembly, characterized in that, include: Valve body (1), the valve body (1) having a flow channel cavity; Valve core (2), the valve core (2) is disposed in the inner cavity of the flow channel, and the valve core (2) has a drive interface (21). A valve stem (3) is inserted into the drive interface (21) at one end. The valve stem (3) can rotate around its own axis. The valve stem (3) is used to drive the valve core (2) to rotate around the axis of the valve stem (3) in order to control the opening and closing of the flow channel cavity. A sealing assembly (4) includes a rigid valve seat (41) and an elastic preload member (42). The rigid valve seat (41) is embedded in the inner cavity of the flow channel and surrounds the outer periphery of the valve core (2). The rigid valve seat (41) is used to seal the valve body (1) and the valve core (2). An isolation cavity (5) is formed between the rigid valve seat (41) and the valve body (1). The elastic preload member (42) is sandwiched in the isolation cavity (5) and the rigid valve seat (41) isolates the elastic preload member (42) from the inner cavity of the flow channel. The elastic preload member (42) is used to apply a preload force toward the valve core (2) to the rigid valve seat (41) to maintain the sealing of the valve core (2) by the rigid valve seat (41).

2. The bidirectional interlocking ball valve assembly according to claim 1, characterized in that, The drive interface (21) is a blind hole opened radially along the valve core (2).

3. The bidirectional interlocking ball valve assembly according to claim 1, characterized in that, The elastic preload (42) is a rubber ring.

4. The bidirectional interlocking ball valve assembly according to claim 2, characterized in that, The bidirectional interlocking ball valve assembly also includes a handle (6) and a screw (7). The handle (6) has a mounting hole (61) and is used to drive the valve stem (3) to rotate along the axial direction of the valve stem (3). The valve stem (3) passes through the valve body (1), one end of the valve stem (3) is inserted into the blind hole, and the other end of the valve stem (3) is located in the mounting hole (61). The screw (7) passes through the mounting hole (61) and is threaded to the end of the valve stem (3) away from the valve core (2).

5. The bidirectional interlocking ball valve assembly according to claim 4, characterized in that, The surface of the handle (6) is provided with a flow direction mark (8), which is used to indicate whether the valve core (2) is in the open or closed state.

6. The bidirectional interlocking ball valve assembly according to claim 4, characterized in that, The handle (6) has multiple anti-slip teeth (9) on its side, and the multiple anti-slip teeth (9) are spaced apart along the length of the handle (6).

7. The bidirectional interlocking ball valve assembly according to claim 4, characterized in that, The handle (6) is provided with a rotation control structure (10), which includes a button (101), an elastic element (102), and a ball (103). The handle (6) has a mounting groove that extends along a horizontal plane perpendicular to the extension direction of the valve body (1). The button (101) is located in the mounting groove and has a receiving groove (1011). The elastic element (102) is located in the mounting groove and abuts against the button (101) and the handle (6) respectively. The valve body (1) has a limiting groove (11), and the two ends of the ball (103) abut against the button (101) and the valve body (103). Button (101) and valve body (1); the receiving groove (1011), the ball (103) and the elastic element (102) are arranged sequentially along the groove depth direction of the receiving groove (1011); when the button (101) is not pressed, the ball (103) is pressed and locked in the limiting groove (11) by the end face of the button (101); when the button (101) is pressed, the receiving groove (1011) moves in the direction close to the ball (103) until the ball (103) enters the receiving groove (1011) and gets out of the limiting groove (11), releasing the rotation restriction on the handle (6).

8. The bidirectional interlocking ball valve assembly according to claim 4, characterized in that, The bidirectional interlocking ball valve assembly also includes a connector (12), which is located at one end of the valve body (1) and connected to the valve body (1); the end of the connector (12) away from the valve body (1) is provided with a protrusion (121) and a groove (122); when two bidirectional interlocking ball valve assemblies are docked, the protrusions (121) of the two connectors (12) are screwed into the grooves (122) of the other to lock the two connectors (12).

9. The bidirectional interlocking ball valve assembly according to claim 8, characterized in that, The bidirectional interlocking ball valve assembly also includes a movable latch (13), which is installed on the connector (12) and located in the groove (122). The movable latch (13) is used to keep locked when the connector (12) is not connected to restrict the rotation of the handle (6). The movable latch (13) is also used to unlock after the two connectors (12) are connected to allow the handle (6) to rotate.

10. The bidirectional interlocking ball valve assembly according to claim 9, characterized in that, One end of the movable latch (13) is provided with a latch (131), and the other end is provided with a protruding pin (132). The middle part of the movable latch (13) is pivotally connected to the connector (12) so that the movable latch (13) can rotate around the middle part of the movable latch (13). The handle (6) is provided with a slide rail (62), which includes a straight rail (621), a guide rail (622), and a stop rail (623). In the initial state, the protruding pin (132) is located on the stop rail (623). When the protruding pin (12) is in the stop rail (623), the protruding pin (132) rotates around the stop rail (623). 1) When screwed into the groove (122), the protrusion (121) presses against the movable latch (13) to force the protruding pin (132) to move to the guide rail (622); when the handle (6) is rotated to open the valve core (2), the protruding pin (132) moves from the guide rail (622) toward the straight rail (621), causing the movable latch (13) to rotate around the middle of the movable latch (13) so that the locking hook (131) engages and locks with the protrusion (121).

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