Ball valve butt joint structure

Abstract

The application relates to the technical field of ball valves, and discloses a ball valve butt joint structure. The ball valve butt joint structure comprises two coaxially butted ball valve assemblies which are the same in structure, each ball valve assembly comprises a valve body, a valve core, a valve rod and a gear, the valve core is arranged in the valve body, one end of the valve rod is fixedly connected with the valve core through the valve body, the other end of the valve rod extends out of the valve body and is sleeved with the gear, the gear can drive the valve rod to rotate, and a circumferentially-extended gear rack is arranged on the butt joint end face of each valve body, and the gear rack of one ball valve assembly can be engaged with the gear of the other ball valve assembly. The ball valve butt joint structure provided by the application can simultaneously open the valve cores of the two ball valve assemblies by only two actions of butt joint and rotation during assembly, two actions of the prior art are saved, one-step operation is achieved, and the operation is quick and convenient, time and labor are saved.

Description

Technical Field

[0001] This invention relates to the field of ball valve technology, and more specifically to a ball valve docking structure. Background Technology

[0002] In water supply systems, it is sometimes necessary to connect two ball valve assemblies. In the existing technology, the connection and assembly of two ball valve assemblies requires four steps: first, the connectors of the two valve bodies are snapped together; then, the valve bodies are rotated to lock them; and then, the handles of the two ball valve assemblies are rotated in sequence to open the valve cores in the two valve bodies, thereby enabling the flow of liquid. This four-step process of opening two ball valve assemblies is relatively cumbersome.

[0003] Therefore, there is an urgent need for a ball valve docking structure to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a ball valve docking structure that requires only two actions to complete the docking, making the operation quick and convenient.

[0005] This invention is achieved through the following technical solution:

[0006] The ball valve docking structure includes two coaxially docked ball valve assemblies with identical structures. Each ball valve assembly includes a valve body, a valve core, a valve stem, and a gear. The valve core is disposed within the valve body. One end of the valve stem passes through the valve body and is fixedly connected to the valve core. The other end of the valve stem extends out of the valve body and is fitted with the gear. The gear can drive the valve stem to rotate. Each valve body has a rack extending circumferentially on its docking end face. The rack of one ball valve assembly can mesh with the gear of the other ball valve assembly.

[0007] As an optional solution, the ball valve assembly further includes a linkage, a pusher, a lifting member, and a drive wheel. One end of the linkage is elastically connected to the valve body, and the other end is provided with a linkage block. The linkage cooperates with the pusher and is used to drive the pusher to rise or fall. The drive wheel is circumferentially fixedly sleeved on the valve stem. The rack has a pusher on its radially inner side. The length of the pusher along the circumferential direction is less than the length of the rack along the circumferential direction, and the rack covers the pusher.

[0008] The pusher can push the linkage block to switch the linkage from the pop-out position to the push-in position. In the pop-out position, the pusher pushes the lifting member, and the lifting member passes through the gear to lift the transmission wheel until it is disengaged from the gear. In the push-in position, the lifting member descends with the pusher, and the transmission wheel is engaged in the gear and can rotate synchronously.

[0009] As an alternative, the linkage block is in the shape of an isosceles triangle or an isosceles trapezoid, and the two ends of the push top have mating inclined surfaces that cooperate with the two inclined surfaces of the linkage block.

[0010] As an optional solution, the bottom surface of the linkage has a first push block with a first pushing slope, and the bottom surface of the pushing member has a second push block with a second pushing slope. The first pushing slope and the second pushing slope are slidably engaged so that the linkage can drive the pushing member to move downward when it moves to the push-in position.

[0011] As an optional solution, the valve body is provided with a mounting platform, the mounting platform has a frame around its perimeter, and a first elastic member abuts against the frame at the end of the linkage component away from the linkage block.

[0012] As an alternative, a sliding hole is provided on the frame, and the end of the linkage component away from the linkage block is slidably disposed in the sliding hole.

[0013] As an optional solution, the pusher includes a chassis and a pusher rod connected to the chassis. The pusher rod is used to push the lifting member. The valve body is provided with an installation platform. The chassis is provided with lugs on its periphery. A second elastic member abuts between the lugs and the installation platform.

[0014] As an optional solution, a limiting rod is erected on the mounting platform, the second elastic element is sleeved outside the limiting rod, a limiting hole is formed on the lug, and the limiting rod passes through the limiting hole.

[0015] As an alternative, a rotating disk is fixedly connected to the outer periphery of the valve stem. The rotating disk is located between the chassis and the lifting member. A through hole is provided on the rotating disk. In the pop-out position, the push rod can pass through the through hole to push the lifting member.

[0016] As an optional solution, the chassis is provided with two push rods, which are arranged opposite to each other, and the rotating disk is provided with four through holes, which are evenly spaced along the circumference of the rotating disk.

[0017] As an optional solution, the lifting component includes a lifting plate and a plurality of lifting rods connected to the lifting plate. The plurality of lifting rods are evenly spaced along the circumference of the lifting plate. The lifting plate is located between the gear and the pusher. The lifting rods can pass through the gear to lift the transmission wheel.

[0018] As an alternative, one of the outer wall of the valve stem and the inner wall of the transmission wheel is provided with a rib, and the other is provided with a groove, wherein the rib and the groove are inserted into each other.

[0019] As an alternative, the gear has a receiving hole at its center for accommodating the transmission wheel, and the wall of the receiving hole engages with the outer peripheral wall of the transmission wheel through gear teeth.

[0020] As an alternative, a top cap is connected to the top of the valve stem, the outer diameter of the top cap being larger than the outer diameter of the valve stem, and a third elastic element is fitted over the valve stem, the third elastic element abutting between the top cap and the transmission wheel.

[0021] As an optional solution, each of the valve bodies is provided with a flange at one end, the flanges of the two ball valve assemblies are connected to each other, each flange is provided with a rack and a rotating hole that corresponds to the position of the gear and extends circumferentially, the rack on one flange can pass through the rotating hole on the other flange and mesh with the gear corresponding to the rotating hole.

[0022] As an optional solution, the rotating hole includes a first hole segment and a second hole segment that are connected to each other. The radial width of the first hole segment is greater than the radial width of the second hole segment. The rack includes a rack body and a connecting portion connected between the flange and the rack body. The radial thickness of the rack body is greater than the radial thickness of the connecting portion. The rack body is adapted to the first hole segment, and the connecting portion is adapted to the second hole segment.

[0023] The beneficial effects of this invention are as follows:

[0024] This invention provides a ball valve docking structure. When assembling two ball valve assemblies, the two valve bodies are first docked face-to-face, so that the rack of the first ball valve assembly meshes with the gear of the second ball valve assembly, and simultaneously, the rack of the second ball valve assembly meshes with the gear of the first ball valve assembly. Then, the two valve bodies are locked by rotating in opposite directions. The valve bodies drive the racks on them to rotate, the racks on the first valve body drive the gears on the second valve body to rotate, and the racks on the second valve body drive the gears on the first valve body to rotate. Each gear drives its corresponding valve stem to rotate, and each valve stem drives its corresponding valve core to rotate and open, thereby achieving synchronous opening of the two ball valve assemblies. Therefore, the ball valve docking structure provided in this embodiment only requires two actions—dockment and rotation—to simultaneously open the valve cores of both ball valve assemblies. Compared to the prior art, this eliminates two actions, achieving a one-step process that is quick, convenient, and saves time and effort. Attached Figure Description

[0025] To more clearly and understandably illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the ball valve docking structure provided in an embodiment of the present invention;

[0027] Figure 2 This is a cross-sectional view of the ball valve docking structure provided in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of a single ball valve assembly provided in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the docking of two ball valve assemblies in the first state according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the docking of two ball valve assemblies in the second state according to an embodiment of the present invention;

[0031] Figure 6 This is a partial structural schematic diagram of the ball valve docking structure provided in an embodiment of the present invention;

[0032] Figure 7 This is an exploded view of a single ball valve assembly provided in an embodiment of the present invention.

[0033] In the picture:

[0034] 10. Ball valve assembly;

[0035] 1. Valve body; 11. Flange; 111. Rotation hole; 1111. First hole section; 1112. Second hole section; 12. Mounting platform; 13. Frame; 131. Sliding hole; 14. Limit rod;

[0036] 2. Valve core; 21. Flow passage;

[0037] 3. Valve stem; 31. Rotary disc; 311. Through hole; 32. Rib; 33. Top cap; 34. Third elastic element;

[0038] 4. Gear; 41. Accommodating hole;

[0039] 5. Rack; 51. Rack body; 52. Connecting part; 53. Push top; 54. Mating inclined surface;

[0040] 6. Linkage component; 61. Linkage block; 62. First push block; 621. First push inclined surface; 63. First elastic component;

[0041] 7. Pushing component; 71. Second push block; 711. Second push inclined surface; 72. Base plate; 721. Lug; 722. Limiting hole; 73. Push rod; 74. Second elastic component;

[0042] 8. Lifting component; 81. Lifting plate; 82. Lifting rod;

[0043] 9. Drive wheel; 91. Groove. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0045] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0048] This embodiment provides a ball valve docking structure, such as Figure 1 and Figure 2 As shown, the ball valve docking structure includes two coaxially docked ball valve assemblies 10 with identical structures. Each ball valve assembly 10 includes a valve body 1, a valve core 2, a valve stem 3, and a gear 4. During assembly, the two valve bodies 1 are coaxially docked, and sealing rings are embedded on the docking surfaces of the two valve bodies 1 to achieve sealing after docking and prevent leakage. The valve core 2 is spherical and is located inside the valve body 1. One end of the valve stem 3 passes through the valve body 1 and is fixedly connected to the valve core 2. The other end of the valve stem 3 extends out of the valve body 1 and is fitted with a gear 4. The gear 4 can drive the valve stem 3 to rotate. Each valve body 1 has a rack 5 extending circumferentially on its docking end face. The rack 5 of one ball valve assembly 10 can mesh with the gear 4 of the other ball valve assembly 10.

[0049] like Figure 2 As shown, the valve core 2 is provided with a flow hole 21 for communicating with the flow passage of the valve body 1. When the flow hole 21 is perpendicular to the axis of the flow passage, the fluid can be cut off. At this time, the ball valve assembly 10 is in the closed state. By rotating the valve stem 3, the valve core 2 can be driven to rotate, and the overlapping area of ​​the flow hole 21 and the flow passage can be adjusted, thereby adjusting the flow rate. When the axis of the flow hole 21 of the valve core 2 and the axis of the flow passage are completely aligned, the fluid can be opened, and the valve core 2 can be switched from 0° to 90°, thereby opening the ball valve assembly 10.

[0050] In this embodiment, when the two ball valve assemblies 10 are not connected, the valve cores 2 are both in a completely closed state. When assembling the two ball valve assemblies 10, the two valve bodies 1 are first manually connected to each other, so that the rack 5 of the first ball valve assembly 10 meshes with the gear 4 of the second ball valve assembly 10, and at the same time, the rack 5 of the second ball valve assembly 10 meshes with the gear 4 of the first ball valve assembly 10. Then, the two valve bodies 1 are locked by rotating in opposite directions. The valve body 1 will drive the rack 5 on it to rotate. The rack 5 on the first valve body 1 will drive the gear 4 on the second valve body 1 to rotate. The rack 5 on the second valve body 1 will drive the gear 4 on the first valve body 1 to rotate. Each gear 4 will drive its corresponding valve stem 3 to rotate. Each valve stem 3 will drive its corresponding valve core 2 to rotate and open, thereby realizing the synchronous opening of the two ball valve assemblies 10. Therefore, the ball valve docking structure provided in this embodiment only requires two actions, docking and rotation, to open the valve cores 2 of the two ball valve assemblies 10 simultaneously. Compared with the prior art, it saves two actions, completes the process in one step, and is quick, convenient and time-saving.

[0051] In an optional embodiment, such as Figure 2 and Figure 3As shown, each valve body 1 has a flange 11 at one end. The outer diameter of the flange 11 is larger than the outer diameter of the valve body 1. The flanges 11 of the two ball valve assemblies 10 are connected to each other. Each flange 11 is provided with the aforementioned rack 5 and a rotating hole 111 that corresponds to the position of the gear 4 and extends circumferentially. The rack 5 and the rotating hole 111 on the same flange 11 are arranged opposite to each other. The rack 5 on one flange 11 can pass through the rotating hole 111 on the other flange 11 and mesh with the gear 4 corresponding to the rotating hole 111. That is, the rack 5 on the first flange 11 can pass through the rotating hole 111 on the second flange 11 and mesh with the gear 4 on the second valve body 1. The rack 5 on the second flange 11 can pass through the rotating hole 111 on the first flange 11 and mesh with the gear 4 on the first valve body 1. The positioning of the rotating hole 111 facilitates the coaxial docking between the two ball valve assemblies 10, and the two ends of the rack 5 can respectively abut against the two end walls of the rotating hole 111, thereby limiting and indicating the rotation angle of the valve body 1. The two abutment positions correspond to the angles of the valve core 2 being fully open and fully closed, respectively.

[0052] Specifically, such as Figure 3 As shown, the rotating hole 111 includes a first hole segment 1111 and a second hole segment 1112 that are connected. The radial width of the first hole segment 1111 is greater than the radial width of the second hole segment 1112. The rack 5 includes a rack body 51 and a connecting part 52 that connects the flange 11 and the rack body 51. The radial thickness of the rack body 51 is greater than the radial thickness of the connecting part 52. The rack body 51 is adapted to the first hole segment 1111, and the connecting part 52 is adapted to the second hole segment 1112. When the two flanges 11 are aligned, the rack body 51 first passes through the first hole 1111 and meshes with the gear 4. At this time, the connecting part 52 is also located in the first hole 1111. Then, during the rotation of the valve body 1, the connecting part 52 gradually rotates into the second hole 1112. When the valve body 1 rotates to its limit position, the connecting part 52 abuts against the end face of the second hole 1112, forming a limit. At this time, the valve core 2 is fully open. Since the radial thickness of the rack body 51 is greater than the radial width of the second hole 1112, the rack body 51 cannot be disengaged from the second hole 1112. This achieves axial limiting and locking after the two valve bodies 1 are aligned, preventing them from separating and ensuring normal operation. This locking structure is simple and does not require a separate locking structure, avoiding increased structural complexity. In addition, after axial locking is achieved through the cooperation of the rack 5 and the rotating hole 111, the mating surfaces of the two valve bodies 1 are tightly fitted, thus ensuring the sealing reliability between the mating surfaces of the two valve bodies 1.

[0053] When actually connecting the two ball valve assemblies 10, when the rack 5 and gear 4 just come into contact, the mating surfaces of the two valve bodies 1 may not yet be completely and tightly fitted, meaning the two mating surfaces are not yet properly sealed. If the valve body 1 is rotated at this time, driving the gear 4 to rotate, the gear 4 will drive the valve core 2 to rotate via the valve stem 3. Even a slight rotation of the valve core 2 will allow water to flow between the two ball valve assemblies 10, potentially causing leakage between the mating surfaces of the two valve bodies 1. Furthermore, after the two ball valve assemblies 10 are disengaged, theoretically, the valve core 2 of both ball valve assemblies 10 should be in a completely closed state. However, if the gear 4 rotates due to accidental contact, it will cause the valve core 2 to rotate, resulting in leakage.

[0054] To address the aforementioned problems, in this embodiment, as follows: Figure 3 and Figure 4 As shown, the ball valve assembly 10 also includes a linkage 6, a pusher 7, a lifting member 8, and a transmission wheel 9. One end of the linkage 6 is elastically connected to the valve body 1, and the other end of the linkage 6 has a protruding linkage block 61. The linkage 6 cooperates with the pusher 7 and is used to drive the pusher 7 to rise or fall. The pusher 7 is used to push the lifting member 8 upward. The lifting member 8 is located on the upper side of the pusher 7 and can rotate together with the gear 4. The lifting member 8 is used to lift the transmission wheel 9. The transmission wheel 9 is circumferentially fixedly sleeved on the valve stem 3. The gear 4 can form a power transmission with the valve stem 3 through the transmission wheel 9. The diameter of the rack 5 is... A pusher 53 is provided on the inner side. The length of the pusher 53 along the circumference is less than the length of the rack 5 along the circumference, and the rack 5 covers the pusher 53, so that when the rack 5 just contacts the gear 4, the pusher 53 has not yet contacted the linkage block 61. The pusher 53 can push the linkage block 61 to switch the linkage 6 from the pop-out position to the push-in position. In the pop-out position, the pusher 7 pushes the lifting member 8 upward. The lifting member 8 passes through the gear 4 and lifts the transmission wheel 9 until it is disengaged from the gear 4. In the push-in position, the lifting member 8 descends with the pusher 7, and the transmission wheel 9 is engaged in the gear 4 and can rotate synchronously.

[0055] It should be noted that since the two ball valve assemblies 10 have the same structure, and the two sets of racks 5 and gears 4 have the same transmission process, this embodiment will use one set of racks 5 and gears 4 as an example for explanation.

[0056] refer to Figure 4When one end of rack 5 just contacts gear 4, the mating surfaces of the two valve bodies 1 may not yet be properly sealed. At this time, pusher 53 is not in contact with linkage block 61, linkage block 61 is in the pop-out position, and pusher 7 is in the pushing state. Pusher 7 pushes lifting member 8 upward, and lifting member 8 passes through gear 4 to lift transmission wheel 9, causing transmission wheel 9 to disengage from gear 4. At this time, gear 4 will only rotate freely, and power will not be transmitted to valve stem 3 and valve core 2. Even if rack 5 is rotated, valve core 2 will not open, thus avoiding leakage problems caused by the lack of proper sealing between the mating surfaces of the two valve bodies 1 in the initial contact between rack 5 and gear 4. (Reference) Figure 5 As the valve body 1 drives the rack 5 to rotate, for example, after rotating 10°, the connecting part 52 begins to enter the second hole section 1112, and the rack body 51 begins to form an axial limiting lock with the second hole section 1112. At this time, the mating surfaces of the two valve bodies 1 are completely fitted and sealed. The pusher 53 on the inner side of the rack 5 begins to contact the linkage block 61 and pushes the linkage block 61 inward along the axial direction, so that the linkage 6 switches to the push position. At this time, the linkage 6 drives the pusher 7 to descend, and the lifting part 8 descends with the pusher 7, so that the transmission wheel 9 descends and engages with the gear 4. At this time, the power of the gear 4 can be transmitted to the valve stem 3 and the valve core 2 through the transmission wheel 9, that is, the transmission wheel 9 can rotate synchronously with the gear 4. As the rack 5 continues to rotate, the rack 5 drives the gear 4 to rotate, and the gear 4 drives the valve stem 3 to rotate through the transmission wheel 9. The valve stem 3 drives the valve core 2 to rotate until the valve core 2 is fully opened to 90°. When valve core 2 is fully open, push top 53 has disengaged from linkage block 61, and linkage 6 pops out again, returning gear 4 to its free-spinning state, preventing accidental activation that could close both ball valve assemblies 10. Similarly, when the two ball valve assemblies 10 need to disengage, valve body 1 is rotated in the opposite direction. This process is the same as described above and will not be repeated here. After the two ball valve assemblies 10 are fully disengaged, valve core 2 returns to its fully closed state, linkage 6 pops out again, and gear 4 returns to its free-spinning state, preventing accidental activation that could open valve core 2 and cause leakage.

[0057] In an optional embodiment, such as Figure 3 As shown, the linkage block 61 is an isosceles triangle or an isosceles trapezoid, and the two ends of the push top 53 have mating inclined surfaces 54 that cooperate with the two inclined surfaces of the linkage block 61. During the opening of the valve core 2, the valve body 1 is rotated forward, and the mating inclined surface 54 at one end of the push top 53 engages with one inclined surface of the linkage block 61, pushing the linkage block 61 in. After being pushed in, the end face between the two mating inclined surfaces 54 of the push top 53 engages with the free end of the linkage block 61, maintaining the pushed-in state to complete the opening process of the valve core 2. During the closing of the valve core 2, the valve body 1 is rotated in the reverse direction, and the mating inclined surface 54 at the other end of the push top 53 engages with the other inclined surface of the linkage block 61. Through the sliding engagement between the inclined surfaces, the rotational motion of the push top 53 can be converted into the axial movement of the linkage block 61 when the valve body 1 is rotated, resulting in a simple structure and convenient operation.

[0058] In an optional embodiment, such as Figure 3 As shown, the valve body 1 is provided with a mounting platform 12, and the mounting platform 12 has a frame 13 around its periphery. A first elastic element 63 abuts against the frame 13 at the end of the linkage 6 away from the linkage block 61. When the pusher 53 pushes the linkage block 61 in, the linkage 6 moves horizontally away from the rack 5, compressing the first elastic element 63. When the pusher 53 disengages from the linkage block 61, the linkage 6 can return to its original position and pop out under the elastic force of the first elastic element 63. The first elastic element 63 can be selected as a spring.

[0059] In an optional embodiment, such as Figure 7 As shown, the bottom surface of the linkage 6 has a first push block 62, and the first push block 62 has a first pushing inclined surface 621. The bottom surface of the pusher 7 has a second push block 71, which is located below the first push block 62. The second push block 71 has a second pushing inclined surface 711. The first pushing inclined surface 621 and the second pushing inclined surface 711 are slidably engaged so that the linkage 6 can drive the pusher 7 to move downward when it moves to the push-in position. After the pusher 53 pushes the linkage block 61 in, the linkage 6 moves horizontally away from the rack 5. The linkage 6 drives the first push block 62 to move horizontally. During the movement, the engagement of the first pushing inclined surface 621 and the second pushing inclined surface 711 drives the second push block 71 to move downward. The second push block 71 drives the pusher 7 to move downward. The structure is simple and the operation is convenient.

[0060] Optionally, such as Figure 7 As shown, the linkage 6 has a U-shaped structure with two opposing linkage arms located on opposite sides of the pusher 7. Each linkage arm has a first push block 62 on its bottom side, and each of the opposite sides of the pusher 7 has a second push block 71. Each first push block 62 slides into contact with the corresponding second push block 71, ensuring that the pusher 7 is subjected to uniform force and moves stably. A clearance hole is provided on the side of the frame 13 near the linkage block 61 to allow the linkage block 61 to pop out. Each linkage arm is constructed as a stepped structure, allowing the first elastic element 63 to abut against the step of the linkage arm to provide a limiting effect.

[0061] In an optional embodiment, combined with Figure 4 and Figure 5 Two sliding holes 131 are provided on the side of the frame 13 away from the linkage block 61. The two free ends of the linkage member 6 away from the linkage block 61 are respectively slidably disposed in the corresponding sliding holes 131. When the top 53 pushes the linkage block 61 in, the two free ends of the linkage member 6 can slide out through the sliding holes 131, so that the linkage member 6 can slide freely and can play a moving guide role.

[0062] In an optional embodiment, such as Figure 6 and Figure 7 As shown, the pusher 7 includes a chassis 72 and a pusher rod 73 connected to the chassis 72. A second pusher block 71 is fixedly connected to the bottom side of the chassis 72. The pusher rod 73 is used to push the lifting member 8. The chassis 72 has a lug 721 on its periphery, and a second elastic member 74 abuts against the mounting platform 12. When the pusher 53 pushes the linkage block 61 in, the linkage 6 moves horizontally and drives the pusher 7 to move downward. The pusher 7 compresses the second elastic member 74. When the pusher 53 disengages from the linkage block 61, the linkage 6 resets and pops out under the action of the first elastic member 63. Under the elastic force of the second elastic member 74, the pusher 7 resets and moves upward, returning to its original position. Figure 4 The state shown is such that the pusher 7 pushes the lifting member 8 upward, and the lifting member 8 lifts the transmission wheel 9 upward, causing the transmission wheel 9 to disengage from the gear 4. The second elastic member 74 can be a spring.

[0063] Optionally, such as Figure 7 As shown, four lugs 721 are evenly distributed around the periphery of the chassis 72. Each lug 721 abuts against a second elastic element 74 between itself and the mounting platform 12. This ensures that the pusher 7 experiences uniform force and moves stably during its resetting and upward movement. In other optional embodiments, the number of lugs 721 and second elastic elements 74 can be set to two, three, or more, depending on actual needs. No specific limitation is made here.

[0064] Optionally, such as Figure 6 and Figure 7 As shown, a limiting rod 14 is erected on the mounting platform 12, and a second elastic member 74 is sleeved on the limiting rod 14. A limiting hole 722 is formed on the lug 721, and the limiting rod 14 passes through the limiting hole 722. This arrangement can prevent the pusher 7 from rotating, so that the pusher 7 can only move up and down, and the limiting rod 14 can also guide the extension and retraction of the second elastic member 74.

[0065] Optionally, the mounting platform 12 is provided with four limiting rods 14, which correspond one-to-one with four lugs 721. In other optional embodiments, the number of limiting rods 14 can also be set to other numbers, as long as they correspond one-to-one with the lugs 721, and no specific limitation is made here.

[0066] In an optional embodiment, such as Figure 7As shown, the lifting component 8 includes a lifting plate 81 and a plurality of lifting rods 82 connected to the lifting plate 81. The plurality of lifting rods 82 are evenly spaced along the circumference of the lifting plate 81. The lifting plate 81 is sleeved on the valve stem 3 and located between the gear 4 and the pusher 7. The pusher 73 is used to push the lifting plate 81, and the lifting rods 82 can pass through the gear 4 to lift the transmission wheel 9. Optionally, four evenly arranged lifting rods 82 are provided on the lifting plate 81, so that the transmission wheel 9 is subjected to uniform force and moves stably during the upward movement. In other optional embodiments, the number of lifting rods 82 can also be set to two, three or more, which can be flexibly set according to actual needs, and no specific limitation is made here.

[0067] It is understandable that during the idle rotation of gear 4, since the lifting rod 82 passes through gear 4, gear 4 will drive the lifting component 8 to rotate together. Since the lifting rod 82 lifts the transmission wheel 9 by abutting, there is friction between the lifting rod 82 and the transmission wheel 9 during the rotation, which may cause the transmission wheel 9 to rotate as well, thereby causing the valve stem 3 and valve core 2 to rotate as well.

[0068] To address the aforementioned problems, in this embodiment, as follows: Figure 4 and Figure 7 As shown, a rotating disk 31 is fixedly connected to the outer periphery of the valve stem 3. The rotating disk 31 is located between the base 72 and the lifting member 8. A through hole 311 is provided on the rotating disk 31. In the pop-out position, the push rod 73 can pass through the through hole 311 to push the lifting member 8. Specifically, two push rods 73 are provided on the base 72, and the two push rods 73 are arranged opposite to each other. Four through holes 311 are provided on the rotating disk 31. The four through holes 311 are evenly spaced along the circumference of the rotating disk 31, and the central angle between two adjacent through holes 311 is 90°. Each push rod 73 can cooperate with two adjacent through holes 311.

[0069] refer to Figure 4 When one end of rack 5 just contacts gear 4, push rod 53 is not in contact with linkage block 61, linkage block 61 is in the pop-out position, and push rod 7 is in the pushing state under the action of second elastic element 74. At this time, through hole 311 of rotating disk 31 is exactly opposite to push rod 73. Push rod 73 passes through through hole 311 of rotating disk 31 and pushes lifting member 8 upward. Lifting member 8 passes through gear 4 and lifts transmission wheel 9, so that transmission wheel 9 disengages from gear 4. At this time, when rack 5 is rotated, gear 4 will only rotate freely. During the free rotation of gear 4, it will drive lifting member 8 to rotate. Since push rod 73 passes through through hole 311 of rotating disk 31, it can restrict rotating disk 31 and valve stem 3 from rotating together, and transmission wheel 9 will not rotate together.

[0070] refer to Figure 5As the valve body 1 drives the rack 5 to rotate, for example, after rotating 10°, the pusher 53 on the inner side of the rack 5 begins to contact the linkage block 61 and pushes the linkage block 61 inward along the axial direction, so that the linkage 6 switches to the push position. At this time, the linkage 6 drives the pusher 7 to descend, and the lifting member 8 descends with the pusher 7, so that the transmission wheel 9 descends and engages with the gear 4. At this time, the power of the gear 4 can be transmitted to the valve stem 3 and the valve core 2 through the transmission wheel 9. As the rack 5 continues to rotate, the rack 5 drives the gear 4 to rotate, and the gear 4 drives the valve stem 3 to rotate through the transmission wheel 9. The valve stem 3 drives the valve core 2 to rotate. When the valve core 2 rotates to 80°, the pusher 53 disengages from the linkage block 61, and the linkage 6 pops out again. After the linkage 6 pops out, the pusher 7 will be pushed upward under the action of the second elastic element 74. However, at this time, because the rotation angle of the rotating disk 31 has not yet reached 90°, the upper through hole 311 of the rotating disk 31 and the pusher 73 are misaligned. Even if the pusher 73 has popped up, it only touches the bottom surface of the rotating disk 31, but it cannot restrict the rotation of the rotating disk 31, nor can it push the lifting element 8 upward. Therefore, the transmission is not disconnected. The valve body 1 continues to rotate, and the rack 5 drives the gear 4 to drive the transmission. The rack 5 can still drive the valve stem 3 through the transmission wheel 9, and the valve core 2 continues to open. When the valve core 2 rotates to 90°, that is, when the valve core 2 is fully open, the through hole 311 on the rotating disk 31 is exactly aligned with the push rod 73. At this time, the push rod 73 passes through the through hole 311 and pushes the lifting member 8 upward. The lifting member 8 lifts the transmission wheel 9 upward, so that the transmission wheel 9 is disengaged from the gear 4. The transmission is then disconnected, and the gear 4 can only rotate freely, and the movement of the valve core 2 is locked.

[0071] Similarly, when the two ball valve assemblies 10 need to be disengaged, the valve body 1 is rotated in the opposite direction. This process is the same as described above and will not be repeated here.

[0072] In this embodiment, as Figure 7 As shown, the outer wall of the valve stem 3 is provided with axially extending ribs 32, and the inner wall of the transmission wheel 9 is provided with axially extending grooves 91. The ribs 32 and grooves 91 are interlocked. This arrangement ensures that the transmission wheel 9 can only move along the valve stem 3 and cannot rotate relative to the valve stem 3, forming a rotation-limiting connection between them. The transmission wheel 9 can drive the valve stem 3 to rotate synchronously. In this embodiment, the number of ribs 32 and grooves 91 is set to four, thereby forming a stable rotation-limiting connection between the transmission wheel 9 and the valve stem 3. In other optional embodiments, the number of ribs 32 and grooves 91 can be set to other numbers, which can be flexibly set according to actual needs. No specific limitation is made here.

[0073] In another optional embodiment, the outer wall of the valve stem 3 is provided with an axially extending groove 91, and the inner wall of the transmission wheel 9 is provided with an axially extending rib 32. The rib 32 is inserted into the groove 91, which can also achieve the above effect, and will not be described in detail here.

[0074] In an optional embodiment, such as Figure 7 As shown, the gear 4 has a receiving hole 41 at its center for accommodating the transmission wheel 9. The wall of the receiving hole 41 engages with the outer peripheral wall of the transmission wheel 9 through gear teeth. This arrangement allows the transmission wheel 9 to form a rotation-limiting connection with the gear 4 after descending into the receiving hole 41. The transmission wheel 9 can be driven to rotate synchronously, and power can be transmitted between the transmission wheel 9 and the valve stem 3 through the transmission wheel 9. In another optional embodiment, the fit between the receiving hole 41 and the transmission wheel 9 can also adopt a form similar to the rib 32 and groove 91 used between the transmission wheel 9 and the valve stem 3, which will not be described in detail here.

[0075] Optionally, such as Figure 7 As shown, the receiving hole 41 is a blind hole, which allows the transmission wheel 9 to abut against the bottom of the receiving hole 41 and axially limit the transmission wheel 9.

[0076] In an optional embodiment, such as Figure 5 and Figure 7 As shown, a cap 33 is connected to the top of the valve stem 3. The outer diameter of the cap 33 is larger than the outer diameter of the valve stem 3. A third elastic element 34 is fitted onto the valve stem 3, and the third elastic element 34 abuts against the cap 33 and the transmission wheel 9. When the transmission wheel 9 is lifted upward by the lifting member 8 until it disengages from the gear 4, the transmission wheel 9 compresses the third elastic element 34 upward. When the lifting member 8 descends, under the elastic force of the third elastic element 34, the transmission wheel 9 descends and engages with the receiving hole 41 of the gear 4, returning to its original position. Figure 5 The state shown is described. The third elastic element 34 can be selected as a spring.

[0077] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A ball valve docking structure, characterized in that, The device includes two coaxially connected ball valve assemblies (10) with identical structures. Each ball valve assembly (10) includes a valve body (1), a valve core (2), a valve stem (3), and a gear (4). The valve core (2) is disposed inside the valve body (1). One end of the valve stem (3) passes through the valve body (1) and is fixedly connected to the valve core (2). The other end of the valve stem (3) extends out of the valve body (1) and is fitted with the gear (4). The gear (4) can drive the valve stem (3) to rotate. Each valve body (1) has a rack (5) extending circumferentially on its mating end face. The rack (5) of one ball valve assembly (10) can mesh with the gear (4) of the other ball valve assembly (10). The ball valve assembly (10) further includes a linkage (6), a pusher (7), a lifting member (8), and a transmission wheel (9). One end of the linkage (6) is elastically connected to the valve body (1), and the other end is provided with a linkage block (61). The linkage (6) cooperates with the pusher (7) and is used to drive the pusher (7) to rise or fall. The transmission wheel (9) is circumferentially fixedly sleeved on the valve stem (3). The rack (5) is provided with a pusher top (53) on its radial inner side. The length of the pusher top (53) along the circumferential direction is less than the length of the rack (5) along the circumferential direction, and the rack (5) covers the pusher top (53). The pusher (53) can push the linkage block (61) to switch the linkage (6) from the pop-out position to the push-in position. In the pop-out position, the pusher (7) pushes the lifting member (8), and the lifting member (8) passes through the gear (4) to lift the transmission wheel (9) until it is disengaged from the gear (4). In the push-in position, the lifting member (8) descends with the pusher (7), and the transmission wheel (9) is engaged in the gear (4) and can rotate synchronously. The linkage block (61) is an isosceles triangle or an isosceles trapezoid, and the two ends of the push top (53) have mating inclined surfaces (54) that cooperate with the two inclined surfaces of the linkage block (61). The bottom surface of the linkage (6) has a first push block (62), the first push block (62) has a first push-up inclined surface (621), the bottom surface of the push-up member (7) has a second push block (71), the second push block (71) has a second push-up inclined surface (711), the first push-up inclined surface (621) and the second push-up inclined surface (711) are slidably engaged so that the linkage (6) can drive the push-up member (7) to move down when it moves to the push-in position; The valve body (1) is provided with an installation platform (12), and the installation platform (12) has a frame (13) around its periphery. The end of the linkage (6) away from the linkage block (61) is abutted against the frame (13) by a first elastic member (63).

2. The ball valve docking structure according to claim 1, characterized in that, A sliding hole (131) is provided on the frame (13), and the end of the linkage (6) away from the linkage block (61) is slidably disposed in the sliding hole (131).

3. The ball valve docking structure according to claim 1, characterized in that, The pusher (7) includes a chassis (72) and a pusher rod (73) connected to the chassis (72). The pusher rod (73) is used to push the lifting member (8). The valve body (1) is provided with an installation platform (12). The chassis (72) is provided with a lug (721) on its periphery. A second elastic member (74) abuts between the lug (721) and the installation platform (12).

4. The ball valve docking structure according to claim 3, characterized in that, A limiting rod (14) is erected on the installation platform (12), and the second elastic element (74) is sleeved on the limiting rod (14). A limiting hole (722) is opened on the lug (721), and the limiting rod (14) passes through the limiting hole (722).

5. The ball valve docking structure according to claim 3, characterized in that, A rotating disk (31) is fixedly connected to the outer periphery of the valve stem (3). The rotating disk (31) is located between the chassis (72) and the lifting member (8). A through hole (311) is provided on the rotating disk (31). In the pop-out position, the push rod (73) can pass through the through hole (311) to push the lifting member (8).

6. The ball valve docking structure according to claim 5, characterized in that, The chassis (72) is provided with two push rods (73), which are arranged opposite to each other. The rotating disk (31) is provided with four through holes (311), which are evenly spaced along the circumference of the rotating disk (31).

7. The ball valve docking structure according to claim 1, characterized in that, The lifting member (8) includes a lifting plate (81) and a plurality of lifting rods (82) connected to the lifting plate (81). The plurality of lifting rods (82) are evenly spaced along the circumference of the lifting plate (81). The lifting plate (81) is located between the gear (4) and the pusher (7). The lifting rods (82) can pass through the gear (4) to lift the transmission wheel (9).

8. The ball valve docking structure according to claim 1, characterized in that, One of the outer wall of the valve stem (3) and the inner wall of the transmission wheel (9) is provided with a rib (32), and the other of them is provided with a groove (91). The rib (32) and the groove (91) are inserted into each other.

9. The ball valve docking structure according to claim 1, characterized in that, The gear (4) has a receiving hole (41) at its center for accommodating the transmission wheel (9), and the wall of the receiving hole (41) is engaged with the outer peripheral wall of the transmission wheel (9) through gear teeth.

10. The ball valve docking structure according to claim 1, characterized in that, The valve stem (3) is connected to a top cap (33) at its top end. The outer diameter of the top cap (33) is larger than the outer diameter of the valve stem (3). A third elastic element (34) is fitted on the valve stem (3). The third elastic element (34) abuts against the top cap (33) and the transmission wheel (9).

11. The ball valve docking structure according to claim 1, characterized in that, Each valve body (1) has a flange (11) at one end. The flanges (11) of the two ball valve assemblies (10) are connected to each other. Each flange (11) is provided with a rack (5) and a rotating hole (111) that corresponds to the position of the gear (4) and extends circumferentially. The rack (5) on one flange (11) can pass through the rotating hole (111) on the other flange (11) and mesh with the gear (4) corresponding to the rotating hole (111).

12. The ball valve docking structure according to claim 11, characterized in that, The rotating hole (111) includes a first hole segment (1111) and a second hole segment (1112) that are connected. The radial width of the first hole segment (1111) is greater than the radial width of the second hole segment (1112). The rack (5) includes a rack body (51) and a connecting part (52) connected between the flange (11) and the rack body (51). The radial thickness of the rack body (51) is greater than the radial thickness of the connecting part (52). The rack body (51) is adapted to the first hole segment (1111), and the connecting part (52) is adapted to the second hole segment (1112).

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