Fluid connector

Abstract

The utility model discloses a fluid connector, and relates to the technical field of fluid communication, the fluid connector comprises at least two valve seats with communication channels and valve cores which are rotatably arranged on the opposite sides of the two valve seats and used for opening and closing the communication channels, and the valve cores are provided with communication parts; the two valve elements are provided with a restraining mechanism to limit synchronous rotation of the two valve elements, the adjacent combination faces of the two valve elements are in contact sealing, and a position state enables the communicating part to communicate with the communicating channels in the two valve seats. According to the fluid connector, only two relative rotation positions exist, namely the two valve elements rotate relative to the two valve seats correspondingly, the sealing performance of the fluid connector can be guaranteed only by forming dynamic sealing at the two positions, and therefore relative rotation between the valve elements and the valve seats can be reduced, use of sealing assemblies can be reduced, and the cost is reduced. Therefore, the overall sealing performance of the fluid connector can be improved, the sealing reliability of the fluid connector is higher, and the machining cost and the machining difficulty can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of fluid communication, and in particular to a fluid connector. Background Art

[0002] At present, the existing fluid connectors usually include a first connector and a second connector that match each other, and the structures of the two connectors can be the same or different. When the first connector and the second connector are disconnected, the two connectors are sealed separately to disconnect the fluid source and prevent fluid leakage and spraying; when the first connector and the second connector are connected, the valve core in the connector is opened by rotating, sliding, etc., so that the fluid can communicate between the first connector and the second connector.

[0003] In the process of implementing the present invention, the inventors found that the prior art has at least the following problems:

[0004] In existing fluid connectors, the valve seat is usually used to drive the valve core movement, that is, the rotation of the first valve seat drives the second valve core inside the second valve seat to rotate, and the rotation of the second valve seat can also drive the first valve core inside the first valve seat to rotate, thereby achieving the purpose of the valve core controlling the on and off of the fluid connector; however, in order to ensure the rotational sealing effect, this method requires a sealing assembly to be provided between each relatively rotating component, resulting in a large number of sealing assemblies required for the fluid connector, increasing the cost of the fluid connector, and if any of the sealing assemblies has a problem, it will cause fluid leakage, affecting the overall sealing performance of the fluid connector.

[0005] Therefore, in view of the above technical problems, how to reduce the relative rotation of the parts inside the fluid connector is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0006] The purpose of the present application is to provide a fluid connector that can reduce the relative rotation between the valve core and the valve seat to reduce the number of sealing components, thereby improving the overall sealing performance of the fluid connector.

[0007] To achieve the above-mentioned purpose, the present application provides a fluid connector, comprising at least two valve seats with connecting channels and a valve core rotatably arranged on opposite sides of the two valve seats and used to open and close the connecting channels, the valve core being provided with a connecting portion, and a constraint mechanism existing between the two valve cores to limit the synchronous rotation of the two valve cores, and during the synchronous rotation process, the adjacent mating surfaces of the two valve cores are in contact and sealed, and there is a position state in which the corresponding connecting portion connects the connecting channels on the two valve seats.

[0008] Optionally, the restraint mechanism is an integral structure fixedly connecting the two valve cores or a detachable structure fixedly connecting the two valve cores.

[0009] Optionally, the connecting portion includes a connecting hole opened on the valve core, and a first sealing component for achieving contact sealing is arranged between two adjacent joint surfaces of the valve cores, and the first sealing component is located at the outer periphery of the connecting hole to ensure that the connecting holes on the two valve cores are sealed and connected.

[0010] Optionally, a second sealing component is provided between adjacent joint surfaces of the valve core and the corresponding valve seat, and the second sealing component is located at the periphery of the communicating channel and / or the periphery of the communicating hole, so that the communicating hole is sealed and communicated with the communicating channel.

[0011] Optionally, the first sealing assembly includes a first sealing ring, and the first sealing ring is interference fit with adjacent joint surfaces of the two valve cores.

[0012] Optionally, the first sealing assembly includes a first annular protrusion integrally connected to one of the valve cores, the first annular protrusion is elastically deformable, and the first annular protrusion is interference fit with a mating surface of the other valve core.

[0013] Optionally, the second sealing assembly includes a second sealing ring, and the second sealing ring is interference fit with adjacent joint surfaces of the valve core and the corresponding valve seat.

[0014] Optionally, the second sealing assembly includes a second annular protrusion integrally connected to one of the valve cores, the second annular protrusion is elastically deformable, and the second annular protrusion is interference-fitted with a mating surface of a corresponding valve seat;

[0015] Or the second sealing assembly includes a third annular protrusion integrally connected to the valve seat, the third annular protrusion is elastically deformable, and the third annular protrusion is interference fit with the corresponding mating surface of the valve core.

[0016] Optionally, the restraint mechanism includes a clamping member provided on one of the valve cores and a clamping member provided on another corresponding valve core, and the clamping member is clamped with the clamping member in a limiting manner.

[0017] Optionally, the clamping member includes a positioning handle provided on one of the valve cores and a positioning hook provided on the positioning handle and bent relatively to each other, the engaging member includes a positioning groove provided on the corresponding other valve core and an accommodation space provided at the positioning groove, the clamping member extends into the positioning groove, and after the clamping member on one of the valve cores moves relative to the engaging member on the corresponding other valve core, the positioning hook enters the accommodation space and makes the positioning hook abut against the side wall of the accommodation space at least in the axial direction of the valve core;

[0018] After the positioning hook enters the accommodating space, the positioning handle abuts against the groove wall of the positioning groove at least in the circumferential direction of the valve core.

[0019] Compared with the prior art, the technical solution provided by this application has at least the following beneficial effects:

[0020] The present application limits the two valve cores through a constraint mechanism, so that the two valve cores rotate synchronously. During the synchronous rotation of the two valve cores, the adjacent joint surfaces of the two valve cores are in contact and sealed, which reduces or even avoids the relative rotation of the two valve cores. In other words, for the valve core, one side of the valve core forms a static seal with the other valve core, and the other side of the valve core forms a dynamic seal with the valve seat. On this basis, the fluid connector only has two relative rotations, namely, the rotation of the two valve cores relative to the two valve seats respectively, so only dynamic seals need to be formed at these two places to ensure the sealing performance of the fluid connector. Therefore, the present application can reduce the relative rotation between the valve core and the valve seat, thereby reducing the use of sealing components, and further improving the overall sealing performance of the fluid connector. The sealing reliability of the fluid connector is higher, and the processing cost and difficulty can also be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the connection structure between the fluid connector and the fluid passage provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the arrangement structure of a valve seat and a corresponding valve core provided in an embodiment of the present application;

[0024] Figure 3 for Figure 2 Schematic diagram of the cross-section structure;

[0025] Figure 4 A schematic diagram of another valve seat and corresponding valve core arrangement structure provided in an embodiment of the present application;

[0026] Figure 5 for Figure 4 Schematic diagram of the cross-section structure.

[0027] In the figure: 1. fluid passage; 2. valve seat; 21. connecting channel; 3. valve core; 31. connecting part; 32. first sealing component; 33. second sealing component; 34. second limiting protrusion; 4. limiting part; 41. first limiting protrusion; 5. operating part; 6. restraining mechanism; 61. snap-fit ​​part; 611. positioning handle; 612. positioning hook; 62. snap-fit ​​part; 621. positioning groove; 622. accommodating space. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] It should be noted that in this embodiment, the directions or positional relationships indicated by "upper", "lower", "front", "back", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] When the fluid connector connects the corresponding fluid passages, the first connecting piece is installed on a fluid pipeline (or manifold), and the second connecting piece is installed on another fluid pipeline (or liquid cooling terminal). Through the cooperation of the first connecting piece and the second connecting piece, a fluid connector for controlling the flow or shutoff of the fluid is formed.

[0032] In the process of the fluid connector controlling the flow or shutoff of the fluid, the valve seat usually drives the valve core to move, that is, the first valve seat in the first connecting member is provided with a protruding structure, and the protruding structure is engaged with the second valve core in the second connecting member, thereby driving the second valve core in the second connecting member to move; similarly, the second valve seat of the second connecting member can also be provided with a protruding structure, and engaged with the first valve core in the first connecting member, thereby driving the first valve core in the first connecting member to move, thereby realizing the transmission of the valve core, and finally in the process of the valve core transmission, the connecting part on the valve core is connected or disconnected with the connecting channel on the valve seat, thereby connecting or disconnecting the corresponding fluid passage.

[0033] However, the first valve core is located in the first valve seat, and the second valve core is located in the second valve seat, so the two end faces of the first valve core form two dynamic sealing parts with the first valve seat. Similarly, the two end faces of the second valve core also form two dynamic sealing parts with the second valve seat. At the same time, the first valve seat and the second valve seat will also rotate relative to each other, forming a dynamic sealing part. In addition, the rotation of the valve seat itself will also rotate relative to the corresponding seat body, also forming a dynamic sealing part. Based on the above situation, the present application proposes a fluid connector that reduces the internal relative rotation parts.

[0034] like Figure 1 As shown, in this embodiment, a fluid connector is provided, which mainly includes a valve seat 2 and a valve core 3. Generally speaking, according to the characteristics of the fluid connector itself, it is necessary to complete the connection of two or more fluid passages 1 on at least two sides of the fluid connector, so the number of valve seats 2 is at least two. Each valve seat 2 has a connecting channel 21. When the fluid passage 1 is connected to the valve seat 2, the fluid passage 1 can maintain communication with the connecting channel 21, but whether the connecting channel 21 between the valve seats 2 is connected needs to be determined by the corresponding valve core 3. It can be understood that each valve seat 2 is provided with one or more connecting channels 21 for fluid circulation. Among them, the multiple here refers to two or more.

[0035] Furthermore, the valve core 3 is rotatably arranged on the opposite side of the valve seat 2, and the connection and shutoff of the communication channel 21 are realized by the rotation of the valve core 3 relative to the valve seat 2. That is to say, a valve core 3 is arranged on each valve seat 2. It should be pointed out that the opposite side of the valve seat 2 refers to the side where the two valve seats 2 face each other, and since a contact seal needs to be realized between the two valve cores 3, the two valve cores 3 need to be arranged relative to each other, and the valve core 3 has at least a partially exposed structure relative to the valve seat 2, that is, the part of the valve core 3 that needs to realize the contact seal needs to be exposed, and there is no other obstruction between the exposed parts of the two valve cores 3 (except the sealing component).

[0036] Furthermore, each valve core 3 is provided with a communication portion 31, and when the valve core 3 is rotated to make the communication portion 31 thereon completely staggered with the communication channel 21 on the corresponding valve seat 2, the communication channel 21 is shut off, and when the valve core 3 is rotated to make the communication portion 31 thereon directly opposite or partially opposite to the communication channel 21 on the corresponding valve seat 2, the communication of the communication channel 21 is achieved. It can be understood that the number of the communication portions 31 on the valve core 3 can correspond to the number of the communication channels 21 on the corresponding valve seat 2, and the shapes and sizes of the communication portions 31 and the communication channels 21 can be substantially the same, or even the same, to achieve a better connection effect.

[0037] It should be noted that the number of the communication channels 21 on the valve seat 2 is determined by the number of the fluid passages 1. A plurality of other communication channels 21 arranged in parallel with each other can be extended on one valve seat 2. Figure 1 , and multiple communication channels 21 can correspond to multiple fluid passages 1 one by one, but for two different valve seats 2 in a fluid connector, the number of their communication channels 21 can be the same or different, and the positions can correspond one by one or be staggered, but it is necessary to ensure that the two valve cores 3 can always be connected under the limit of the constraint mechanism 6, and there is a position that satisfies the connection between the communication part 31 and the communication channel 21, and another position that satisfies the shutoff of the communication part 31 and the communication channel 21. In other words, under the limit state of the constraint mechanism 6, the two valve cores 3 rotate synchronously, and at this time, the two communication parts 31 on the two valve cores 3 also rotate synchronously. Therefore, the communication channels 21 on the two valve seats 2 can only be connected when the two communication parts 31 are kept in communication, that is, the process of the two valve cores 3 opening and closing the communication channel 21 synchronously.

[0038] In addition, if the number of valve seats 2 is two, then two corresponding valve cores 3 can be directly arranged on the opposite sides of the two valve seats 2, so that the connection between the connecting portion 31 and the connecting channels 21 on the two valve seats 2 is achieved through the rotation of the valve core 3 relative to the valve seat 2; if the number of valve seats 2 is greater than two, three valve seats 2 are taken as an example here, then one valve seat 2 needs to be connected to the other two valve seats 2 at the same time, and the three valve seats 2 are sequentially recorded as the first valve seat, the second valve seat and the third valve seat here, and part of the connecting channel 21 on the first valve seat needs to be controlled to open and close with part of the connecting channel 21 on the second valve seat through two valve cores 3, and other part of the connecting channel 21 on the first valve seat also needs to be controlled to open and close with part of the connecting channel 21 on the third valve seat through two valve cores 3. Similarly, other part of the connecting channel 21 on the second valve seat and other part of the connecting channel 21 on the third valve seat are controlled to open and close through two valve cores 3, thereby forming a triangle-like connection structure, so that the connection relationship between the three valve seats is two-by-two. That is to say, even if the number of valve seats 2 is four, five, six, etc., what needs to be considered here is the connection relationship between two adjacent valve seats 2, which is equivalent to the connection relationship when the number of valve seats 2 is two as mentioned above.

[0039] On this basis, this application will be introduced by taking two valve seats 2 as an example. When the number of valve seats 2 is greater than two, please refer to the connection relationship between the two valve seats 2. The two valve seats 2 are respectively provided with valve cores 3, and the valve cores 3 are provided with connecting parts 31. Since the valve cores 3 and the valve seats 2 rotate relative to each other, one side of the valve core 3 needs to be dynamically sealed with the valve seats 2. The two valve cores 3 are connected by a constraint mechanism 6, and in the limited state of the constraint mechanism 6, the two valve cores 3 can rotate synchronously, so that the two valve cores 3 can achieve contact sealing of the adjacent joint surfaces of the two valve cores 3 at least during the synchronous rotation process.

[0040] In summary of the above embodiments, the present application limits the two valve cores 3 through the constraint mechanism 6, so that the two valve cores 3 can achieve synchronous rotation. During the synchronous rotation of the two valve cores 3, the adjacent joint surfaces of the two valve cores 3 are in contact and sealed, which reduces or even avoids the relative rotation of the two valve cores 3. That is to say, for one valve core 3, one side of the valve core 3 forms a static seal with the corresponding other valve core 3, and the other side of the valve core 3 forms a dynamic seal with the corresponding valve seat 2. On this basis, the fluid connector only has two relative rotations, namely, the rotation of the two valve cores 3 relative to the two valve seats 2, so it is only necessary to form dynamic seals at these two places to ensure the sealing performance of the fluid connector. Therefore, the present application can reduce the relative rotation between the valve core 3 and the corresponding valve seat 2, thereby reducing the use of sealing components, and further improving the overall sealing performance of the fluid connector. The sealing reliability of the fluid connector is higher, and the processing cost and difficulty can also be reduced.

[0041] It should be pointed out that there are two situations in which the two valve cores 3 are in the process of realizing synchronous rotation. The first situation is that the two valve cores 3 are directly fixed relative to each other, so the two valve cores 3 are in a state of synchronous rotation from beginning to end. At this time, the constraint mechanism 6 can be an integral structure that is fixedly connected to the two valve cores 3, or a detachable structure that is fixedly connected to the two valve cores 3. Then, on the basis of the fixed connection of the constraint mechanism 6, the constraint mechanism 6 has essentially reached the limit state; the second situation is that the two valve cores 3 have a certain clamping limit effect after a small amplitude relative movement occurs. At this time, the constraint mechanism 6 reaches the limit state, so that the two valve cores 3 meet the conditions for synchronous rotation. Of course, the constraint mechanism 6 can also be a power part that drives the two valve cores 3 to rotate synchronously, such as a servo motor, a stepper motor, or other high-precision power drive part, and the synchronous rotation of the two valve cores 3 can be achieved by means of gear transmission, for example, a gear structure is set on the outer periphery of the valve core 3, and a gear structure is also set at the power end of the drive part, and the valve core 3 is driven to rotate through gear meshing. That is to say, the purpose of the constraint mechanism 6 of the present application is to limit the two valve cores 3 to achieve synchronous rotation. The constraint mechanism 6 can be in various forms, including but not limited to the implementation methods given above, which will not be described in detail here, and all fall within the protection scope of the present application.

[0042] However, the only difference between the above two situations is that in the second situation, the two valve cores 3 need to move slightly relative to each other before the constraint mechanism 6 can reach the limit state. However, since the relative movement of the two valve cores 3 is relatively small, the relative rotation is significantly reduced compared with the prior art.

[0043] In addition, for the first case, the constraint mechanism 6 is a detachable structure, and the constraint mechanism 6 can be an exposed structure arranged on the valve core 3. By setting the exposed structure on the two valve cores 3, the two exposed structures are detachably connected by bolts or the like, thereby keeping the two valve cores 3 in a synchronous rotation state; or the detachable connection is achieved through an embedded structure between the valve cores 3, that is, a part of one valve core 3 is embedded in the corresponding other valve core 3, and the embedded part is locked and fixed by bolts or the like, which can also achieve synchronous rotation.

[0044] For the second case, the constraint mechanism 6 includes a clamping member 61 provided on one valve core 3 and a clamping member 62 provided on the corresponding other valve core 3, and the clamping member 61 and the clamping member 62 are mutually limited and clamped; the clamping member 61 and the clamping member 62 can be exposed structures, and after the two valve cores 3 move relative to each other, the clamping member 61 and the clamping member 62 realize clamping and limiting, so that the two valve cores 3 are limited in the axial direction and the circumferential direction to ensure the synchronous rotation effect. Of course, the clamping member 61 and the clamping member 62 can also adopt an embedded matching mode, that is, the clamping member 61 is embedded in the clamping member 62, and after the two valve cores 3 rotate or slide relative to each other, the clamping member 61 and the clamping member 62 realize clamping and limiting, so that the two form axial interference in the axial direction of the valve core 3 to avoid mutual distance and form circumferential interference in the circumferential direction of the valve core 3 to rotate synchronously, so as to achieve the limiting state of the constraint mechanism 6.

[0045] Furthermore, for the embedded matching mode in the second case, the clamping member 61 includes a positioning handle 611 provided on the valve core 3 and a positioning hook 612 provided on the positioning handle 611 and relatively bent, and the clamping member 62 includes a positioning groove 621 provided on the valve core 3 and a receiving space 622 provided at the positioning groove 621; the relative bending means that there is a certain angle between the positioning handle 611 and the positioning hook 612, and the angle here can be a right angle, an acute angle, an obtuse angle or an arc angle, etc. Among them, the clamping member 61 can be an integrated structure with the valve core 3, or a detachable structure, and there is no excessive restriction here. The clamping member 61 extends into the positioning groove 621, and after the two valve cores 3 move relative to each other, the positioning hook 612 enters the accommodating space 622, and the positioning hook 612 abuts against the side wall of the accommodating space 622 at least in the axial direction of the valve core 3, so that the two valve cores 3 interfere with each other axially, thereby locking the two valve cores 3 axially; at the same time, after the positioning hook 612 enters the accommodating space 622, the positioning handle 611 abuts against the groove wall of the positioning groove 621 at least in the circumferential direction of the valve core 3, thereby achieving circumferential limiting. In other words, during the clamping process of the clamping member 61 and the engaging member 62, the two valve cores 3 will move relative to each other to a certain extent, but the relative movement amplitude is small, and at the same time, after the clamping member 61 and the engaging member 62 are clamped in place, the adjacent joint surfaces of the two valve cores 3 are in contact and sealed.

[0046] The contact seal between the two valve cores 3 is achieved through the first sealing component 32, and the dynamic seal between the valve core 3 and the valve seat 2 is achieved through the second sealing component 33; specifically, the connecting portion 31 includes a connecting hole opened on the valve core 3, that is, each valve core 3 is provided with a connecting hole, and a first sealing component 32 for achieving contact sealing is provided between adjacent joint surfaces of the two valve cores 3, and the first sealing component 32 is located on the periphery of the connecting hole to ensure that the connecting holes on the two valve cores 3 are sealed and connected.

[0047] Similarly, a second sealing component 33 is provided between adjacent joint surfaces of the valve core 3 and the corresponding valve seat 2 . The second sealing component 33 is located at the periphery of the communicating channel 21 and / or the periphery of the communicating hole so that the communicating hole is sealed and communicated with the communicating channel 21 .

[0048] As for the two different situations that exist in the process of achieving synchronous rotation of the two valve cores 3, the contact sealing form between the two valve cores 3 will not be affected by the above two situations. In other words, no matter what method is used to achieve synchronous rotation of the two valve cores 3, it is necessary to make the two valve cores 3 exist in the form of contact sealing (of course, if the two valve cores 3 are an integrated structure, and the connecting part 31 of the two valve cores 3 can be regarded as a complete channel without any broken parts, the two valve cores 3 can be regarded as an integral valve core 3 at this time, so the first sealing component 32 is not required, and the contact sealing feature does not exist).

[0049] There can be various contact sealing forms for the adjacent joint surfaces of the two valve cores 3. For example, the first sealing assembly 32 includes a first sealing ring. A sealing groove can be opened on the joint surface of the valve core 3, and the first sealing ring can be fixed in the sealing groove. The first sealing ring and the joint surfaces or sealing grooves of the two valve cores 3 are kept in an interference fit, thereby ensuring the sealing performance of the first sealing ring.

[0050] For another example, the first sealing component 32 includes a first annular protrusion integrally connected to a valve core, and the first annular protrusion may have a certain elastic deformation performance. In this case, the valve core 3 and the first annular protrusion may be a plastic material with elastic deformation, such as polytetrafluoroethylene (PTFE). A sealing groove is provided on the other corresponding valve core 3, and the first annular protrusion is clamped in the sealing groove and has an interference fit therewith, thereby achieving a contact sealing effect.

[0051] It should be pointed out that even if the constraint mechanism 6 needs to achieve synchronous limiting of the valve core 3 after the two valve cores 3 have certain relative movements, it does not affect the first sealing component 32 using the above two forms to achieve contact sealing between the two valve cores 3. In other words, if the two valve cores 3 need to move relative to each other before the constraint mechanism 6 can reach the limiting state, then during the relative movement of the two valve cores 3, since the first sealing ring and the first annular protrusion both have certain elastic deformation properties, the first sealing ring or the first annular protrusion will not affect the relative movement of the two valve cores 3, but may increase the friction force during the relative movement between the two valve cores 3; and after the two valve cores 3 move relative to each other, the first sealing ring or the first annular protrusion can put the two valve cores 3 in a contact sealing state, and at the same time, the first sealing ring or the first annular protrusion will also rotate synchronously with the two valve cores 3, so that the two valve cores 3 and the first sealing component 32 remain in a stationary state, reducing the loss of the first sealing component 32 caused by friction.

[0052] Similarly, the second sealing assembly 33 includes a second sealing ring, which is interference fit with the adjacent joint surfaces of the valve core 3 and the corresponding valve seat 2. The specific setting method can refer to the first sealing ring and will not be repeated here.

[0053] Or, the second sealing component 33 includes a second annular protrusion integrally connected to a valve core 3, the second annular protrusion is elastically deformable, and the second annular protrusion is interference-fitted with the mating surface of the corresponding valve seat 2;

[0054] Alternatively, the second sealing component 33 includes a third annular protrusion integrally connected to the valve seat 2, the third annular protrusion is elastically deformable, and the third annular protrusion is interference-fitted with the mating surface of the corresponding valve core 3. The specific configuration of the second sealing component 33 and the third sealing component can refer to the first sealing component 32, and will not be repeated here.

[0055] It should be noted that there can be many forms of connecting holes, such as straight holes, curved holes and other forms of holes, as long as the alignment accuracy of the holes is ensured during the synchronous rotation of the valve core 3. In addition, during the synchronous rotation of the two valve cores 3, the setting of the connecting portion 31 should satisfy the requirement that there is a position to conduct the connecting channel 21, and another position to shut off the connecting channel 21. It can be seen that under the premise of synchronous rotation of the two valve cores 3, the conduction and shutoff of the connecting channel 21 depend on the position of the valve core 3 during the synchronous rotation. Therefore, when the connecting channel 21 is shut off, the connecting portion 31 on the valve core 3 will naturally not be connected to the connecting channel 21. Then, for a valve core 3 and a corresponding valve seat 2, the valve core 3 also shuts off the corresponding valve seat 2, thereby ensuring that when the fluid connector is disconnected, the corresponding fluid passage 1 is in a sealed shutoff state to prevent fluid leakage and injection.

[0056] The above points out that the second situation includes the use of an embedded matching method, and before the constraint mechanism 6 reaches the limit and the two valve cores 3 rotate synchronously, the two valve cores 3 need to rotate or slide relative to each other. However, whether it is relative rotation or relative sliding, the limit state of the constraint mechanism 6 means that the two valve cores 3 reach the axial interference and circumferential limit state. At this time, the two valve cores 3 can rotate synchronously in the circumferential limit state, and the axial interference is used to prevent the two valve cores 3 from moving away from each other, so as to achieve axial locking. Of course, the axial and circumferential directions here are based on the valve core 3 being a disc shape, and the valve core 3 is rotated relative to the valve seat 2, reflecting the axial and circumferential directions.

[0057] However, the valve core 3 may be in other shapes besides a disc, such as a regular polygon such as a rectangle, and an irregular shape, and no further restrictions are imposed here. However, it should be noted that for shapes besides a disc, the definitions of axial and circumferential directions may be interpreted as follows: axial direction refers to the direction perpendicular to the plane where the valve core 3 is located, and circumferential direction refers to the direction of the valve core 3 around the rotation axis of the valve core 3 during rotation.

[0058] Furthermore, before the constraint mechanism 6 reaches the limit state (during the engagement process of the clamping member 61 and the engaging member 62), the clamping member 61 needs to be inserted into the positioning groove 621 first. At this time, the clamping member 61 and the engaging member 62 are not required to be engaged. After the clamping member 61 is extended into place, relative rotation or relative sliding occurs between the two valve cores 3, so that the clamping member 61 and the engaging member 62 reach the engagement limit state, that is, the constraint mechanism 6 reaches the limit state for the synchronous rotation of the two valve cores 3.

[0059] So far, the axial interference and circumferential limit of the two valve cores 3 are realized through the relative movement of the two valve cores 3. It should be pointed out that since the relative movement of the two valve cores 3 includes relative rotation and relative sliding, the two relative movements are analyzed one by one here.

[0060] When the two valve cores 3 rotate relative to each other, the positioning hook 612 also rotates relative to the positioning groove 621 with the rotation axis of the valve core 3 as the center. At this time, due to the existence of the accommodating space 622, the positioning hook 612 will be misaligned with the positioning groove 621 in the axial direction of the valve core 3, and gradually rotate into the accommodating space 622, while the positioning handle 611 is always located in the positioning groove 621, and until the positioning handle 611 abuts against the groove wall of the positioning groove 621 to achieve circumferential limiting. At this time, rotating the valve core 3 can drive the corresponding other valve core 3 to rotate synchronously.

[0061] For example, the positioning handle 611 is arranged on the end surface of the valve core 3 facing the corresponding other valve core 3 and extends in the direction of the positioning groove 621. Preferably, the positioning handle 611 is arranged perpendicular to the end surface of the valve core 3, and the positioning hook 612 extends along the circumference of the valve core 3, and the extension direction of each positioning hook 612 is consistent, that is, Figure 2 The positioning groove 621 also extends a certain length along the circumference of the valve core 3, and the contour of the positioning groove 621 is slightly larger than the contour of the positioning hook 612, while ensuring that the positioning handle 611 can extend into the positioning groove 621, the positioning hook 612 can also extend into the positioning groove 621, that is, Figure 4 With the arrangement, after the two valve cores 3 rotate relative to each other, the positioning hook 612 can gradually enter the accommodating space 622 along the circumference of the valve core 3, and at the same time, the positioning handle 611 will gradually approach the side wall of the positioning groove 621 along the circumference of the valve core 3 in the positioning groove 621, and finally achieve circumferential limiting, thereby realizing the rotational clamping of the two valve cores 3.

[0062] Or, when the two valve cores 3 slide relative to each other, the positioning hook 612 also slides with the valve core 3 relative to the positioning groove 621. At this time, due to the existence of the accommodating space 622, the positioning hook 612 will be misaligned with the positioning groove 621 in the axial direction of the valve core 3, and gradually slide into the accommodating space 622, while the positioning handle 611 is always located in the positioning groove 621, and until the positioning handle 611 abuts against the groove wall of the positioning groove 621 to achieve circumferential limiting. At this time, rotating the valve core 3 can drive the other valve core 3 to rotate synchronously.

[0063] For example, the positioning handle 611 can also be set on the end face of the valve core 3 facing the corresponding other valve core 3, and extend in the direction of the positioning groove 621. Preferably, the positioning handle 611 is set perpendicular to the end face of the valve core 3. The extension direction of the positioning hook 612 can be multiple, and it is sufficient to ensure that it has a certain bending angle with the positioning handle 611. Under this premise, the positioning groove 621 only needs to be roughly consistent with the contour of the positioning hook 612, so that the positioning hook 612 and the positioning handle 611 can be simultaneously extended into the positioning groove 621. It should be noted that if the positioning hook 612 extends radially along the valve core 3, then the positioning groove 621 will also extend radially. At this time, the relative sliding direction of the two valve cores 3 is also radial, and the positioning handle 611 can directly abut against the groove wall of the positioning groove 621 in the circumferential direction of the valve core 3. It is only necessary to ensure that the positioning hook 611 and the positioning groove 621 have reserved space in the radial direction of the valve core 3.

[0064] Of course, the direction of relative sliding of the two valve cores 3 is not limited to the radial direction, but can also be relative sliding in other directions, ensuring that the positioning handle 611 and the positioning hook 612 can enter the positioning groove 621, and a certain circumferential sliding space is reserved for the positioning handle 611 on the positioning groove 621, and after sliding, it can achieve circumferential limiting on the groove wall of the positioning groove 621, and at the same time ensure that the positioning hook 612 enters the accommodating space 622 after sliding relative to the positioning groove 621, so as to form a sliding snap connection.

[0065] The above-mentioned rotational engagement and sliding engagement states are the limiting states of the restraint mechanism 6 .

[0066] It should be noted that the accommodation space 622 here refers to the space where the positioning hook 612 enters the valve core 3 after the clamping member 61 and the clamping member 62 move relative to each other. Generally speaking, the accommodation space 622 is set at the valve core 3, which can be a groove opened on the valve core 3, or a hole opened on the valve core 3. If the accommodation space 622 is a groove opened on the valve core 3, then the accommodation space 622 is located on the side of the valve core 3 facing the valve seat 2, and the positioning hook 612 extends from one side of the positioning groove 621 and extends from the other side of the positioning groove 621. At the same time, after the positioning hook 612 is extended, it can correspond to the position of the groove. At this time, only the two valve cores 3 need to rotate or slide relative to each other, so that the positioning hook 612 can be extended into the groove, so that the groove can interfere with the positioning hook 612 in the axial direction of the valve core 3. If the accommodating space 622 is a hole opened on the valve core 3, then the positioning hook 612 extends into from one side of the positioning groove 621, but the positioning hook 612 is not required to extend from the other side of the positioning groove 621. It is only necessary to ensure that the positioning hook 612 can correspond to the position of the hole. At this time, the two valve cores 3 rotate or slide relative to each other, so that the positioning hook 612 enters the hole, thereby interfering with the positioning hook 612 in the axial direction of the valve core 3 through the hole.

[0067] In addition, when the accommodating space 622 is a groove opened on the valve core 3, if the positioning hook 612 protrudes from the end surface of the valve core 3 at some position after entering the groove, then it is necessary to reserve some space between the valve core 3 and the valve seat 2 for the positioning hook 612 to rotate; in other words, after the positioning hook 612 and the positioning groove 621 are in a connected state, the positioning hook 612 will also rotate synchronously during the synchronous rotation of the two valve cores 3. At this time, if the positioning hook 612 protrudes outside the valve core 3, in order to avoid affecting the normal rotation of the positioning hook 612 and the valve core 3, it is also necessary to reserve a certain space between the valve core 3 and the valve seat 2 to meet the rotation requirements of the positioning hook 612.

[0068] It should be noted that, it is pointed out above that a clamping part 61 is provided on one valve core 3, and a corresponding engaging part 62 is provided on another valve core 3, so as to form a set of constraint mechanisms 6, but it is not limited to only providing a clamping part 61 or a engaging part 62 on one valve core 3. The clamping part 61 and the engaging part 62 can also be provided on the same valve core 3 at the same time, so as to form two sets of constraint mechanisms 6, but it is necessary to ensure that the clamping part 61 on one valve core 3 can cooperate with the engaging part 62 on the corresponding other valve core 3.

[0069] In order to improve the connection effect of the two valve cores 3 during the synchronous rotation process, the number of the clamping members 61 and the clamping members 62 are both set to multiple, and they correspond one to one. Please refer to Figure 2 and Figure 4The plurality of clamping parts 61 are evenly distributed along the circumference of the valve core 3 , so that the two valve cores 3 are subjected to more even force during axial interference and axial limit connection, thereby ensuring the accuracy of synchronous rotation of the two valve cores 3 .

[0070] On the basis of the above embodiment, a limiting portion 4 is further provided on the valve seat 2. Figures 1 to 5 The limiting portion 4 can limit the valve core 3 axially on the valve seat 2, so that the valve core 3 is only rotatably set on the valve seat 2, and the above-mentioned relative sliding of the two valve cores 3 occurs before the two valve cores 3 maintain synchronous rotation. At this time, the two valve cores 3 are not coaxially set. Through the relative sliding of the two valve cores 3, the two valve cores 3 are made coaxial, thereby realizing subsequent synchronous rotation.

[0071] The limiting portion 4 includes a first limiting protrusion 41 arranged on the outer periphery of the corresponding valve core 3, and the valve core 3 is provided with a second limiting protrusion 34 embedded between the first limiting protrusion 41 and the valve seat 2. Figure 3 and Figure 5 The first limiting protrusion 41 and the second limiting protrusion 34 are positioned in the axial direction of the valve core 3, thereby ensuring that the valve core 3 is stationary relative to the valve seat 2 in the axial direction.

[0072] It should be pointed out that one of the first limiting protrusion 41 and the second limiting protrusion 34 can be a continuous annular protrusion, and the other can be a discontinuous annular protrusion, or both can be set as continuous annular protrusions; of course, the first limiting protrusion 41 and the second limiting protrusion can also be set as discontinuous annular protrusions, but it is necessary to ensure that the raised portion of the first limiting protrusion 41 will not detach from the discontinuity of the second limiting protrusion 34, and similarly, the raised portion of the second limiting protrusion 34 will not detach from the discontinuity of the first limiting protrusion 41, thereby ensuring that the valve core 3 can rotate stably on the valve seat 2.

[0073] In addition, the present application also includes an operating unit 5, please refer to Figure 1 and Figure 2 , the operating part 5 can be connected to the valve core 3, so as to drive the two valve cores 3 to move relative to each other and / or drive the two valve cores 3 to drive circumferentially. In other words, the operating part 5 can have three functions: first, drive the two valve cores 3 to move relative to each other; second, drive the two valve cores 3 to drive circumferentially, that is, to rotate synchronously in the circumferential direction; third, it can drive the two valve cores 3 to move relative to each other, and drive the two valve cores 3 to rotate synchronously in the circumferential direction after the relative movement.

[0074] The operating part 5 can also be an exposed structure. When the valve cores 3 are directly fixed relative to each other to achieve synchronous rotation, the operating part 5 can also be equivalent to the constraint mechanism 6, that is, on the one hand, the two valve cores 3 are connected through the operating part 5, and on the other hand, the two valve cores 3 are controlled to rotate synchronously through the operating part 5. In addition, if the operating part 5 cannot be equivalent to the constraint mechanism 6, that is, the second case of the two valve cores 3 achieving synchronous rotation as mentioned above, a strip hole (not shown in the figure) can be opened on the limit part 4 at this time, and one side of the operating part 5 is connected to the valve core 3, and the other side is located outside the limit part 4, so that the relative rotation of the two valve cores 3 and the circumferential synchronous rotation of the two valve cores 3 can be achieved by controlling the operating part 5; and the relative sliding of the two valve cores 3 only requires externally controlling the relative sliding of the two valve seats 2, and does not involve the movement of the valve core 3 itself. Therefore, the relative sliding of the two valve cores 3 can be achieved without the need for the operating part 5.

[0075] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0076] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A fluid connector, characterized in that: The invention comprises at least two valve seats (2) provided with connecting passages (21) and a valve core (3) rotatably arranged on opposite sides of the two valve seats (2) and used for opening and closing the connecting passages (21), wherein the valve core (3) is provided with a connecting portion (31), and the two valve cores (3) have a restraining mechanism (6) to limit the synchronous rotation of the two valve cores (3), the adjacent joint surfaces of the two valve cores (3) are in contact and sealed, and there is a position state in which the corresponding connecting portion (31) connects the connecting passages (21) on the two valve seats (2).

2. The fluid connector according to claim 1, characterized in that: The restraining mechanism (6) is an integral structure that is fixedly connected to the two valve cores (3) or a detachable structure that is fixedly connected to the two valve cores (3).

3. The fluid connector according to claim 1, characterized in that: The communication portion (31) comprises a communication hole formed on the valve core (3), and a first sealing component (32) for achieving contact sealing is provided between adjacent joint surfaces of the two valve cores (3), wherein the first sealing component (32) is located at the periphery of the communication hole so that the communication holes on the two valve cores (3) are sealed and connected.

4. The fluid connector according to claim 3, characterized in that: A second sealing component (33) is provided between adjacent joint surfaces of the valve core (3) and the corresponding valve seat (2); the second sealing component (33) is located at the periphery of the communication channel (21) and / or the periphery of the communication hole, so that the communication hole is in sealed communication with the communication channel (21).

5. The fluid connector according to claim 4, characterized in that: The first sealing assembly (32) comprises a first sealing ring, and the first sealing ring is interference-fitted with adjacent joint surfaces of the two valve cores (3).

6. The fluid connector according to claim 4, characterized in that: The first sealing component (32) comprises a first annular protrusion integrally connected to one of the valve cores (3); the first annular protrusion is elastically deformable, and the first annular protrusion is interference-fitted with a joint surface of the other valve core (3).

7. The fluid connector according to claim 5 or 6, characterized in that: The second sealing assembly (33) comprises a second sealing ring, the second sealing ring being in interference fit with adjacent joint surfaces of the valve core (3) and the corresponding valve seat (2).

8. The fluid connector according to claim 5 or 6, characterized in that: The second sealing component (33) comprises a second annular protrusion integrally connected to one of the valve cores (3), the second annular protrusion being elastically deformable, and the second annular protrusion and the corresponding mating surface of the valve seat (2) being interference fit; Alternatively, the second sealing component (33) comprises a third annular protrusion integrally connected to the valve seat (2), the third annular protrusion having elastic deformation properties, and the third annular protrusion and the corresponding mating surface of the valve core (3) being interference fit.

9. The fluid connector according to claim 1, characterized in that: The restraining mechanism (6) comprises a clamping member (61) provided on one of the valve cores (3) and a clamping member (62) provided on another corresponding valve core (3), wherein the clamping member (61) is clamped with the clamping member (62) in a limiting manner.

10. The fluid connector according to claim 9, characterized in that: The clamping member (61) comprises a positioning handle (611) arranged on one of the valve cores (3) and a positioning hook (612) arranged on the positioning handle (611) and bent relative to each other; the engaging member (62) comprises a positioning groove (621) provided on the corresponding other valve core (3) and a receiving space (622) provided at the positioning groove (621); the clamping member (61) extends into the positioning groove (621), and after the clamping member (61) on one of the valve cores (3) moves relative to the engaging member (62) on the corresponding other valve core (3), the positioning hook (612) enters the receiving space (622), and the positioning hook (612) abuts against a side wall of the receiving space (622) at least in the axial direction of the valve core (3); After the positioning hook (612) enters the accommodating space (622), the positioning handle (611) abuts against the groove wall of the positioning groove (621) at least in the circumferential direction of the valve core (3).

Images