Fluid connector

Abstract

A fluid connector, comprising at least two valve seats (2) provided with communication channels (21), and valve cores (3) rotatably arranged on the opposite sides of the two valve seats (2) and used for opening and closing the communication channels (21). The valve cores (3) are provided with communication portions (31). The two valve cores (3) are provided with a constraint mechanism (6) for limiting 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 communication portions (31) connect the communication channels (21) on the two valve seats (2). The fluid connector involves only two locations of relative rotation, and the relative rotation between the valve cores (3) and the valve seats (2) can be reduced, so that the use of sealing components can be reduced, thereby improving the overall sealing performance of the fluid connector, and lowering the processing cost and processing difficulty.

Description

A fluid connector

[0001] The present application claims priority to the Chinese patent application No. 202421158804.X, filed on May 24, 2024, and entitled "A fluid connector", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of fluid communication, and in particular to a fluid connector. BACKGROUND

[0003] At present, the existing fluid connector usually includes a first connecting piece and a second connecting piece matched with each other, and the structures of the two connecting pieces can be the same or different. When the first connecting piece and the second connecting piece are disconnected, each of the two connecting pieces is individually sealed to disconnect the fluid source and prevent fluid leakage and spraying. When the first connecting piece and the second connecting piece are connected, the valve core in the connecting piece is opened by rotating, sliding or other ways, so that the fluid can be communicated between the first connecting piece and the second connecting piece.

[0004] In the process of implementing the present application, the inventors found that at least the following problems exist in the prior art.

[0005] In the existing fluid connector, the driving of the valve core is usually completed by the valve seat, i.e., the rotation of the first valve seat drives the rotation of the second valve core inside the second valve seat, and the rotation of the second valve seat also drives the rotation of the first valve core inside the first valve seat, so as to achieve the purpose of controlling the fluid connector to be connected or disconnected. However, in order to ensure the sealing effect of rotation, a sealing assembly needs to be arranged between each pair of relatively rotating parts, which results in a large number of sealing assemblies required by the fluid connector, increases the cost of the fluid connector, and if any of the sealing assemblies has a problem, it will cause fluid leakage and affect the overall sealing performance of the fluid connector.

[0006] Therefore, in view of the above technical problems, how to reduce the relative rotation between the valve core and the valve seat is a technical problem to be solved by those skilled in the art. SUMMARY

[0007] The purpose of the present application is to provide a fluid connector which can reduce the relative rotation between the valve core and the valve seat, reduce the number of sealing assemblies, and thus improve the overall sealing performance of the fluid connector.

[0008] To achieve the above object, the application provides a fluid connector, comprising at least two valve seats with communication channels and a valve core rotatably arranged on opposite sides of the two valve seats and used for opening and closing the communication channels, the valve core is provided with a communication part, the two valve cores have a constraint mechanism for limiting the synchronous rotation of the two valve cores, and in the process of synchronous rotation, the adjacent joint surfaces of the two valve cores are in contact and sealed, and there is a position state for making the corresponding communication part communicate the communication channels on the two valve seats.

[0009] Optionally, the constraint mechanism is an integral structure fixedly connected with the two valve cores or a detachable structure fixedly connected with the two valve cores.

[0010] Optionally, the communication part comprises a communication hole formed on the valve core, and a first sealing assembly for realizing contact sealing is arranged between the adjacent joint surfaces of the two valve cores, and the first sealing assembly is located on the outer periphery of the communication hole, so that the communication holes on the two valve cores are sealed and communicated.

[0011] Optionally, a second sealing assembly is arranged between the adjacent joint surfaces of the valve core and the corresponding valve seat, and the second sealing assembly is located on the outer periphery of the communication channel and / or the outer periphery of the communication hole, so that the communication hole and the communication channel are sealed and communicated.

[0012] Optionally, the first sealing assembly comprises a first sealing ring, and the first sealing ring is in interference fit with the adjacent joint surfaces of the two valve cores.

[0013] Optionally, the first sealing assembly comprises a first annular protrusion integrally connected with one of the valve cores, the first annular protrusion can be elastically deformed, and the first annular protrusion is in interference fit with the joint surface of the other valve core.

[0014] Optionally, the second sealing assembly comprises a second sealing ring, and the second sealing ring is in interference fit with the adjacent joint surfaces of the valve core and the corresponding valve seat.

[0015] Optionally, the second sealing assembly comprises a second annular protrusion integrally connected with one of the valve cores, the second annular protrusion can be elastically deformed, and the second annular protrusion is in interference fit with the joint surface of the corresponding valve seat.

[0016] Or the second sealing assembly comprises a third annular protrusion integrally connected with the valve seat, the third annular protrusion can be elastically deformed, and the third annular protrusion is in interference fit with the joint surface of the corresponding valve core.

[0017] Optionally, the constraint mechanism comprises a clamping piece arranged on one of the valve cores and a clamping piece arranged on the other corresponding valve core, and the clamping piece is in limiting clamping with the clamping piece.

[0018] Optionally, the clamping member comprises a positioning handle arranged on one of the spools and a positioning hook arranged on the positioning handle and bent oppositely, the clamping member comprises a positioning slot arranged on the corresponding another spool and a receiving space arranged in the positioning slot, the clamping member is inserted into the positioning slot, and after the clamping member on one of the spools moves relative to the clamping member on the corresponding another spool, the positioning hook enters the receiving space and abuts against the sidewall of the receiving space at least in the axial direction of the spool.

[0019] After the positioning hook enters the receiving space, the positioning handle abuts against the slot wall of the positioning slot at least in the circumferential direction of the spool.

[0020] Compared with the prior art, the technical scheme provided by the application has at least the following beneficial effects:

[0021] The two spools are limited by the constraint mechanism, so that the two spools rotate synchronously, and in the synchronous rotation process of the two spools, the adjacent joint surfaces of the two spools are in contact and sealed, reducing or even avoiding the relative rotation of the two spools. That is, for the spool, one side of the spool forms a static seal with another spool, and the other side of the spool forms a dynamic seal with a valve seat. On this basis, the fluid connector only has two relative rotations, i.e., the rotation of the two spools relative to the two valve seats, so that a dynamic seal is formed at the two places to ensure the sealing performance of the fluid connector. Therefore, the application can reduce the relative rotation between the spool and the valve seat, thereby reducing the use of the sealing assembly, 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 are also reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the application, and those skilled in the art can obtain other drawings according to the provided drawings without creative labor.

[0023] Fig. 1 is a schematic view of a fluid connector and a fluid passage connection structure provided by an embodiment of the application;

[0024] Fig. 2 is a schematic view of a valve seat and a corresponding spool arrangement provided by an embodiment of the application;

[0025] Fig. 3 is a schematic view of the cross-sectional structure of Fig. 2;

[0026] Fig. 4 is a schematic view of another valve seat and corresponding valve core arrangement according to an embodiment of the present application;

[0027] Fig. 5 is a schematic view of a cross-sectional structure of Fig. 4.

[0028] In the drawings: 1, fluid passage; 2, valve seat; 21, communication channel; 3, valve core; 31, communication part; 32, first sealing assembly; 33, second sealing assembly; 34, second limiting protrusion; 4, limiting part; 41, first limiting protrusion; 5, operating part; 6, constraint mechanism; 61, clamping member; 611, positioning handle; 612, positioning hook; 62, clamping member; 621, positioning groove; 622, accommodating space. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0030] It should be noted that, in the present embodiment, the directions or positional relationships indicated by "upper", "lower", "front", "rear", 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 devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, "first", "second", "third", "fourth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0031] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0032] When connecting corresponding fluid passages, the fluid connector is installed on one fluid pipe (or a collector) by the first connecting member and installed on another fluid pipe (or a liquid cooling terminal) by the second connecting member, so as to form a fluid connector for controlling fluid flow or shut-off through cooperation of the first connecting member and the second connecting member.

[0033] In the process of controlling fluid flow or shut-off, the valve core is usually driven to move by the valve seat, i.e. the first valve seat in the first connecting piece is provided with a protruding structure, which is clamped with the second valve core in the second connecting piece to drive the second valve core in the second connecting piece to move; similarly, the second valve seat of the second connecting piece can also be provided with a protruding structure, which is clamped with the first valve core in the first connecting piece to drive the first valve core in the first connecting piece to move, so as to realize the transmission of the valve core, and finally in the process of transmission of the valve core, the communication part on the valve core is communicated with or shut off the communication channel on the valve seat, so as to communicate or shut off the corresponding fluid passage.

[0034] 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 that the two end faces of the first valve core form two dynamic sealing parts with the first valve seat, and similarly, the two end faces of the second valve core also form two dynamic sealing parts with the second valve seat, and at the same time, the first valve seat and the second valve seat also rotate relative to each other, forming a dynamic sealing part, in addition, the rotation of the valve seat itself also relative to the corresponding seat body, also forming a dynamic sealing part. Based on the above situation, the fluid connector for reducing the internal relative rotation parts is provided.

[0035] As shown in FIG. 1, in the embodiment, a fluid connector is provided, mainly comprising a valve seat 2 and a valve core 3. Generally, according to the characteristics of the fluid connector itself, it is necessary to complete the connection of two or more fluid passages 1 on both sides of the fluid connector, so the number of valve seats 2 is at least two. Each valve seat 2 has a communication channel 21, when the fluid passage 1 is connected with the valve seat 2, the fluid passage 1 can keep communication with the communication channel 21, but whether the communication channel 21 between the valve seats 2 is communicated 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 communication channels 21 for fluid communication. Wherein, the plurality here refers to two or more than two.

[0036] Further, the valve core 3 is rotatably arranged on the opposite side of the valve seat 2, and the communication and shut-off 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, each valve seat 2 is provided with a valve core 3. It should be pointed out that the opposite side of the valve seat 2 refers to the side of the two valve seats 2 facing each other, and since the contact sealing between the two valve cores 3 needs to be realized, the two valve cores 3 need to be arranged oppositely, and the valve core 3 has at least a part of the exposed structure relative to the valve seat 2, i.e. the part of the valve core 3 that needs to realize the contact sealing needs to be exposed, and there is no other barrier (except the sealing assembly) between the exposed parts of the two valve cores 3.

[0037] Further, each valve core 3 is provided with a communication part 31, when the valve core 3 rotates to make the communication part 31 on it completely misaligned with the communication channel 21 on the corresponding valve seat 2, it realizes the shutoff of the communication channel 21, and when the valve core 3 rotates to make the communication part 31 on it opposite or partially opposite to the communication channel 21 on the corresponding valve seat 2, it realizes the communication of the communication channel 21. It can be understood that the number of communication parts 31 on the valve core 3 can correspond to the number of communication channels 21 on the corresponding valve seat 2, and the shape and size of the communication part 31 and the communication channel 21 can be substantially the same, even the same, to achieve better connection effect.

[0038] It should be noted that the number of communication channels 21 on the valve seat 2 is determined according to the number of fluid passages 1, and a valve seat 2 can extend a plurality of other communication channels 21 side by side, please refer to Figure 1, and a plurality of communication channels 21 can correspond to a plurality of fluid passages 1 one by one, but for two different valve seats 2 in a fluid connector, the number of communication channels 21 can be the same or different, and the position can be one by one or staggered, but it is necessary to ensure that the two valve cores 3 can always be connected under the limiting of the constraint mechanism 6, and there is a position that meets the communication of the communication part 31 and the communication channel 21, and another position that meets the shutoff of the communication part 31 and the communication channel 21. In other words, under the limiting state of the constraint mechanism 6, the two valve cores 3 are synchronously rotated, at this time the two communication parts 31 on the two valve cores 3 are also synchronously rotated, so it is necessary to keep the two communication parts 31 in communication state to connect the communication channels 21 on the two valve seats 2, that is, the process of synchronously opening and shutting the communication channel 21 by the two valve cores 3.

[0039] In addition, if the number of valve seats 2 is two, then the corresponding two valve cores 3 can be directly arranged on the opposite sides of the two valve seats 2, respectively, so that the communication part 31 and the communication channels 21 on the two valve seats 2 are communicated by the rotation of the valve core 3 relative to the valve seat 2; if the number of valve seats 2 is greater than two, here taking three valve seats 2 as an example, one valve seat 2 needs to be connected with the other two valve seats 2 at the same time, here the three valve seats 2 are sequentially referred to as the first valve seat, the second valve seat and the third valve seat, and part of the communication channels 21 on the first valve seat need to be controlled to be opened and closed by the two valve cores 3 through part of the communication channels 21 on the second valve seat, and the other part of the communication channels 21 on the first valve seat also need to be controlled to be opened and closed by the two valve cores 3 through part of the communication channels 21 on the third valve seat, and similarly, the other part of the communication channels 21 on the second valve seat and the other part of the communication channels 21 on the third valve seat are controlled to be opened and closed by the two valve cores 3, thereby forming a triangular connection structure, and the connection relationship between the three valve seats is two-by-two connection. That is, even if the number of valve seats 2 is four, five, six or the like, here we only need to consider the two-by-two connection relationship between the adjacent two valve seats 2, which is equivalent to the connection relationship when the number of valve seats 2 is two as mentioned above.

[0040] On this basis, the present application takes two valve seats 2 as an example to introduce, and when the number of valve seats 2 is greater than two, please refer to the connection relationship between the two valve seats 2. The valve core 3 is rotatably arranged on the two valve seats 2, and the communication part 31 is arranged on the valve core 3. Since the valve core 3 rotates relative to the valve seat 2, the side of the valve core 3 needs to be dynamically sealed with the valve seat 2. The two valve cores 3 are connected by the constraint mechanism 6, and in the limiting state of the constraint mechanism 6, the two valve cores 3 can synchronously rotate, so that the two valve cores 3 realize the contact sealing of the adjacent joint surfaces of the two valve cores 3 at least in the synchronous rotation process.

[0041] In summary of the above embodiments, the present application limits the two valve cores 3 by the constraint mechanism 6, so that the two valve cores 3 realize synchronous rotation, and in the synchronous rotation process of the two valve cores 3, the adjacent joint surfaces of the two valve cores 3 are in contact sealing, which reduces or even avoids the relative rotation of the two valve cores 3. That is, for a valve core 3, the side of the valve core 3 forms a static seal with the corresponding another 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, i.e. the rotation of the two valve cores 3 relative to the two valve seats 2, so only dynamic sealing needs to be formed at the two places to ensure the sealing performance of the fluid connector. Therefore, the present application can reduce the relative rotation of the valve core 3 and the corresponding valve seat 2, thereby reducing the use of the sealing assembly, 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.

[0042] It should be pointed out that there are two cases in the process of realizing synchronous rotation of the two valve cores 3. The first case is that the two valve cores 3 are directly fixed relative to each other, so that the two valve cores 3 are in a synchronous rotation state from the beginning to the end. At this time, the constraint mechanism 6 can be an integral structure fixedly connected to the two valve cores 3, or a detachable structure 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 limiting state. The second case is that the two valve cores 3 have a certain clamping limiting effect after a small relative movement, so that the constraint mechanism 6 reaches the limiting state, thereby meeting the conditions for synchronous rotation of the two valve cores 3. Of course, the constraint mechanism 6 can also be a power element for driving the synchronous rotation of the two valve cores 3, such as a servo motor, a stepper motor, etc. The power driving element with high precision can realize the synchronous rotation of the two valve cores 3 through gear transmission, such as setting a gear structure on the outer periphery of the valve core 3, and setting a gear structure on the power end of the driving element, and driving the valve core 3 to rotate through gear engagement. That is, the purpose of the constraint mechanism 6 of the present application is to limit the two valve cores 3 to achieve synchronous rotation. The form of the constraint mechanism 6 can be various, including but not limited to the above-mentioned embodiments, which will not be described one by one here, and all fall within the scope of the present application.

[0043] However, for the above two cases, the difference is that in the second case, the two valve cores 3 need to have a small relative movement, so that the constraint mechanism 6 reaches the limiting state. However, since the relative movement of the two valve cores 3 is small, compared with the prior art, the relative rotation is also significantly reduced.

[0044] In addition, for the constraint mechanism 6 in the first case, the constraint mechanism 6 can be an exposed structure arranged on the valve core 3. By arranging exposed structures on the two valve cores 3, the two exposed structures are detachably connected by bolts, etc., thereby maintaining the two valve cores 3 in a synchronous rotation state. Or through the embedded structure between the valve cores 3 to realize detachable connection, that is, one 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, etc., which also can realize synchronous rotation.

[0045] For the second case, the constraint mechanism 6 comprises a clamping piece 61 arranged on one valve core 3 and a clamping piece 62 arranged on the other valve core 3, and the clamping piece 61 and the clamping piece 62 are limited and clamped with each other. The clamping piece 61 and the clamping piece 62 can be exposed structures, and after the relative movement of the two valve cores 3, the clamping piece 61 and the clamping piece 62 are clamped and limited, 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 piece 61 and the clamping piece 62 can also adopt an embedded cooperation mode, that is, the clamping piece 61 is embedded in the clamping piece 62, and after the relative rotation or relative sliding of the two valve cores 3, the clamping piece 61 and the clamping piece 62 are clamped and limited, so that the two valve cores 3 are axially interfered to avoid moving away from each other in the axial direction of the valve core 3, and are circumferentially interfered to rotate synchronously in the circumferential direction of the valve core 3, so as to achieve the limited state of the constraint mechanism 6.

[0046] Further, for the embedded cooperation mode in the second case, the clamping piece 61 comprises a positioning handle 611 arranged on the valve core 3 and a positioning hook 612 arranged on the positioning handle 611 and relatively bent, and the clamping piece 62 comprises a positioning groove 621 arranged on the valve core 3 and a containing space 622 arranged at the positioning groove 621. The relative bending means that the positioning handle 611 and the positioning hook 612 have a certain angle, which can be a right angle, an acute angle, an obtuse angle or an arc angle. The clamping piece 61 can be an integral structure with the valve core 3, or a detachable structure, which is not limited here. The clamping piece 61 extends into the positioning groove 621, and after the relative movement of the two valve cores 3, the positioning hook 612 enters the containing space 622, and the positioning hook 612 at least abuts against the side wall of the containing space 622 in the axial direction of the valve core 3, so that the two valve cores 3 are axially interfered, thereby axially locking the two valve cores 3. At the same time, after the positioning hook 612 enters the containing space 622, the positioning handle 611 abuts against the groove wall of the positioning groove 621 in the circumferential direction of the valve core 3, thereby achieving circumferential limitation. That is, during the clamping process of the clamping piece 61 and the clamping piece 62, the two valve cores 3 will have a certain relative movement, but the relative movement amplitude is small, and after the clamping piece 61 and the clamping piece 62 are clamped in place, the two valve cores 3 are in contact and sealed.

[0047] The contact sealing between the two valve cores 3 is achieved by the first sealing assembly 32, and the dynamic sealing between the valve core 3 and the valve seat 2 is achieved by the second sealing assembly 33. Specifically, the communication part 31 comprises a communication hole arranged on the valve core 3, that is, each valve core 3 is provided with a communication hole, and a first sealing assembly 32 for realizing contact sealing is arranged between the adjacent joint surfaces of the two valve cores 3. The first sealing assembly 32 is located outside the circumference of the communication hole, so that the communication holes on the two valve cores 3 are sealed and communicated.

[0048] Similarly, the second sealing assembly 33 is arranged between the adjacent joint surface of the valve core 3 and the corresponding valve seat 2, and is located at the outer periphery of the communication passage 21 and / or the communication hole, so as to seal the communication between the communication hole and the communication passage 21.

[0049] However, the contact sealing form between the two valve cores 3 is not affected by the above two cases, that is, no matter how the two valve cores 3 are synchronously rotated, the two valve cores 3 need to be in contact with each other. In other words, if the two valve cores 3 are integrated and the communication part 31 of the two valve cores 3 can be regarded as a complete channel without a broken part, the two valve cores 3 can be regarded as a whole valve core 3, so the first sealing assembly 32 is not needed, and the contact sealing feature does not exist.

[0050] The contact sealing form between the adjacent joint surfaces of the two valve cores 3 can be various, for example, the first sealing assembly 32 includes a first sealing ring, a sealing groove can be formed on the joint surface of the valve core 3, the first sealing ring is fixed in the sealing groove, and the first sealing ring is in interference fit with the joint surface of the two valve cores 3 or the sealing groove, so as to ensure the sealing performance of the first sealing ring.

[0051] For example, the first sealing assembly 32 includes a first annular protrusion integrally connected with one valve core, the first annular protrusion can have a certain elastic deformation performance, at this time the valve core 3 and the first annular protrusion can be made of a plastic material with elastic deformation performance, such as polytetrafluoroethylene (PTFE) material. A sealing groove is formed on the corresponding other valve core 3, the first annular protrusion is clamped in the sealing groove and is in interference fit with the sealing groove, so as to achieve the contact sealing effect.

[0052] It should be pointed out that even if the constraint mechanism 6 needs to be in a certain relative movement of the two valve cores 3 before it can achieve synchronous limiting of the valve core 3, it does not affect the first sealing assembly 32 to achieve the contact sealing between the two valve cores 3 in the above two forms. That is, if the two valve cores 3 need to be relatively moved before the constraint mechanism 6 can reach the limiting state, during the relative movement of the two valve cores 3, the first sealing ring and the first annular protrusion both have a certain elastic deformation performance, so the first sealing ring or the first annular protrusion does not affect the relative movement of the two valve cores 3, but may increase the friction between the two valve cores 3 during the relative movement. After the two valve cores 3 are relatively moved to the position, the first sealing ring or the first annular protrusion can make the two valve cores 3 in the contact sealing state, and the first sealing ring or the first annular protrusion can also rotate synchronously with the two valve cores 3, so that the two valve cores 3 and the first sealing assembly 32 remain in a static state, reducing the wear of the first sealing assembly 32 caused by friction.

[0053] Similarly, the second sealing assembly 33 comprises a second sealing ring in interference fit with the adjacent joint surface of the valve core 3 and the corresponding valve seat 2, which can be arranged in the same way as the first sealing ring, and thus will not be described here.

[0054] Alternatively, the second sealing assembly 33 comprises a second annular protrusion integrally connected with a valve core 3, which can be elastically deformed, and is in interference fit with the joint surface of the corresponding valve seat 2.

[0055] Alternatively, the second sealing assembly 33 comprises a third annular protrusion integrally connected with the valve seat 2, which can be elastically deformed, and is in interference fit with the joint surface of the corresponding valve core 3. The specific arrangement of the second sealing assembly 33 and the third sealing assembly can refer to the first sealing assembly 32, and thus will not be described here.

[0056] It should be noted that there can be various forms of communication holes, such as straight holes, curved holes and other forms of holes, as long as the alignment accuracy of the holes during synchronous rotation of the valve core 3 is ensured. In addition, during synchronous rotation of the two valve cores 3, the communication part 31 should be arranged to satisfy the condition that the communication channel 21 is open at one position, and the communication channel 21 is closed at another position. It can be seen that, under the premise of synchronous rotation of the two valve cores 3, the opening and closing of the communication channel 21 depends on the position of the valve core 3 during synchronous rotation, so when the communication channel 21 is closed, the communication part 31 on the valve core 3 naturally does not communicate with the communication channel 21, and for one valve core 3 and the corresponding valve seat 2, the valve core 3 also plays a closing role for the corresponding valve seat 2, thereby ensuring that when the fluid connector is disconnected, the corresponding fluid passage 1 is in a sealed and closed state, preventing fluid leakage and spraying.

[0057] The above indicates that in the second case, the embedded fitting mode is adopted, and before the limiting position of the two valve cores 3 is reached, the two valve cores 3 need to be relatively rotated or relatively slid, but whether it is relative rotation or relative sliding, the limiting state of the constraint mechanism 6 means that the two valve cores 3 reach the state of axial interference and circumferential limitation, at which time the two valve cores 3 can be synchronously rotated in the circumferential limitation state, and the axial interference avoids the two valve cores 3 from moving away from each other, achieving axial locking. Of course, here the axial and circumferential directions are based on the disc-shaped valve core 3 and the premise that the valve core 3 is arranged to rotate relative to the valve seat 2, and the axial and circumferential directions are shown.

[0058] However, the valve core 3 can also be other shapes besides a disc, such as a regular polygon, for example, a rectangle, and an irregular shape, and the present disclosure is not limited in this regard. However, it should be noted that for other shapes besides a disc, the axial direction can be interpreted as being perpendicular to the plane in which the valve core 3 lies, and the circumferential direction can be interpreted as being the direction in which the valve core 3 rotates about the rotation axis of the valve core 3.

[0059] Further, before the restraint mechanism 6 reaches the limit position (during the engagement of the clamping member 61 and the engaging member 62), the clamping member 61 first needs to be inserted into the positioning groove 621, at which time the clamping member 61 and the engaging member 62 do not require engagement. After the clamping member 61 is inserted into position, the two valve cores 3 undergo relative rotation or relative sliding, thereby causing the clamping member 61 and the engaging member 62 to reach the clamping limit position, i.e., the restraint mechanism 6 reaches the limit position for the synchronous rotation of the two valve cores 3.

[0060] At this point, the axial interference and circumferential limit of the two valve cores 3 are achieved through the relative movement of the two valve cores 3. It should be noted that since the relative movement of the two valve cores 3 includes relative rotation and relative sliding, the two types of relative movement are analyzed separately.

[0061] When the two valve cores 3 undergo relative rotation, the positioning hook 612 also undergoes rotation relative to the positioning groove 621 with the rotation axis of the valve core 3 as the center. At this time, due to the presence of the accommodation 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 accommodation space 622, while the positioning handle 611 is always located within the positioning groove 621 and will abut against the groove wall of the positioning groove 621 until the positioning handle 611 reaches the circumferential limit. At this time, rotating the valve core 3 will cause the corresponding other valve core 3 to rotate synchronously.

[0062] 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 toward the positioning groove 621, and the positioning handle 611 is preferably arranged perpendicularly to the end surface of the valve core 3, while the positioning hook 612 extends along the circumference of the valve core 3, and the extension direction of each positioning hook 612 is consistent, i.e., the arrangement shown in FIG. 2. The positioning groove 621 also extends along the circumference of the valve core 3 for a certain length, and the profile of the positioning groove 621 is slightly larger than the profile of the positioning hook 612, so that the positioning handle 611 can extend into the positioning groove 621 while the positioning hook 612 can also extend into the positioning groove 621, i.e., the arrangement shown in FIG. 4. After the two valve cores 3 undergo relative rotation, the positioning hook 612 can gradually enter the accommodation space 622 along the circumference of the valve core 3, while the positioning handle 611 will gradually approach the side wall of the positioning groove 621 along the circumference of the valve core 3 within the positioning groove 621, and finally reach the circumferential limit, thereby achieving the rotational clamping of the two valve cores 3.

[0063] Or, when the two valve cores 3 slide relative to each other, the positioning hook 612 also slides relative to the positioning groove 621 of the valve core 3, at this time, due to the existence of the accommodation space 622, the positioning hook 612 will be dislocated with the positioning groove 621 in the axial direction of the valve core 3, and gradually slide into the accommodation 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, realizing circumferential limiting, at this time, rotating the valve core 3 can drive the other valve core 3 to rotate synchronously.

[0064] For example, the positioning handle 611 can also be arranged on the end face of the valve core 3 facing the corresponding other valve core 3 and extend towards the direction of the positioning groove 621, and the positioning handle 611 is preferably arranged perpendicularly to the end face of the valve core 3, and the extension direction of the positioning hook 612 can be various, as long as it has a certain bending angle with the positioning handle 611, and under this premise, the positioning groove 621 only needs to be roughly consistent with the profile of the positioning hook 612, so that the positioning hook 612 and the positioning handle 611 can simultaneously extend into the positioning groove 621, and it needs to be noted that if the positioning hook 612 extends radially along the valve core 3, then the positioning groove 621 also extends 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, as long as a reserved space is left between the positioning handle 611 and the positioning groove 621 in the radial direction of the valve core 3.

[0065] Of course, the relative sliding direction of the two valve cores 3 is not limited to the radial direction, and can also be relative sliding in other directions, as long as the positioning handle 611 and the positioning hook 612 can enter the positioning groove 621 and reserve a certain circumferential sliding space for the positioning handle 611 in the positioning groove 621, and can abut against the groove wall of the positioning groove 621 in the circumferential direction after sliding, and also ensure that the positioning hook 612 enters the accommodation space 622 after sliding relative to the positioning groove 621, so as to form a sliding clamping.

[0066] The above-mentioned rotating clamping and sliding clamping states are the limiting states of the constraint mechanism 6.

[0067] It should be noted that the accommodating space 622 here refers to the space into which the positioning hook 612 enters at the valve core 3 after the clamping piece 61 and the clamping piece 62 are relatively moved. Generally, the accommodating space 622 is arranged at the valve core 3, which can be a groove arranged on the valve core 3 or a hole arranged on the valve core 3. If the accommodating space 622 is a groove arranged on the valve core 3, the accommodating space 622 is located on the side of the valve core 3 facing the valve seat 2, the positioning hook 612 extends from one side of the positioning groove 621 and extends from the other side of the positioning groove 621, and the positioning hook 612 can correspond to the position of the groove after extending out. At this time, only the relative rotation or relative sliding of the two valve cores 3 is needed to make the positioning hook 612 extend into the groove, so that the groove interferes with the positioning hook 612 in the axial direction of the valve core 3. If the accommodating space 622 is a hole arranged on the valve core 3, the positioning hook 612 extends from one side of the positioning groove 621, but it is not required that the positioning hook 612 extends from the other side of the positioning groove 621. It is only required to ensure that the positioning hook 612 can correspond to the position of the hole. At this time, the positioning hook 612 enters the hole by the relative rotation or relative sliding of the two valve cores 3, so that the hole interferes with the positioning hook 612 in the axial direction of the valve core 3.

[0068] In addition, when the accommodating space 622 is a groove arranged on the valve core 3, if the positioning hook 612 protrudes from the end surface of the valve core 3 at some positions after entering the groove, a reserved space for the rotation of the positioning hook 612 needs to be reserved between the valve core 3 and the valve seat 2. In other words, after the positioning hook 612 and the positioning groove 621 are in the 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, a certain space needs to be reserved between the valve core 3 and the valve seat 2, so as to meet the rotation requirement of the positioning hook 612.

[0069] It should be noted that the above indicates that the clamping piece 61 is arranged on one valve core 3, and the clamping piece 62 is arranged on the corresponding other valve core 3, thereby forming a set of constraint mechanisms 6. However, it is not limited to that only the clamping piece 61 or the clamping piece 62 is arranged on one valve core 3. The clamping piece 61 and the clamping piece 62 can also be arranged on the same valve core 3, thereby forming two sets of constraint mechanisms 6. However, it is required to ensure that the clamping piece 61 on one valve core 3 can cooperate with the clamping piece 62 on the corresponding other valve core 3.

[0070] In order to improve the connection effect of the two valve cores 3 during synchronous rotation, the number of the clamping pieces 61 and the clamping pieces 62 is set to be multiple, and one-to-one correspondence, please refer to figure 2 and figure 4, multiple clamping pieces 61 are evenly distributed along the circumferential direction of the valve core 3, so that the two valve cores 3 are more uniform in stress during axial interference and axial limiting connection, and the accuracy of synchronous rotation of the two valve cores 3 is ensured.

[0071] On the basis of the above embodiment, the limiting portion 4 is further arranged on the valve seat 2, please refer to figure 1 to figure 5, the limiting portion 4 can limit the valve core 3 in the axial direction on the valve seat 2, so that the valve core 3 only rotates on the valve seat 2, and the relative sliding of the above two valve cores 3 occurs before the two valve cores 3 keep synchronous rotation, at this time, the two valve cores 3 are not coaxially arranged, through the relative sliding of the two valve cores 3, the two valve cores 3 are coaxial, so as to realize the subsequent synchronous rotation.

[0072] And the limiting portion 4 includes the first limiting protrusion 41 arranged on the outer circumference of the corresponding valve core 3, and the second limiting protrusion 34 arranged on the valve core 3 and embedded between the first limiting protrusion 41 and the valve seat 2, please refer to figure 3 and figure 5, the first limiting protrusion 41 and the second limiting protrusion 34 limit the valve core 3 in the axial direction, so as to ensure that the valve core 3 is stationary in the axial direction relative to the valve seat 2.

[0073] 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 an intermittent annular protrusion, or both can be a continuous annular protrusion; of course, the first limiting protrusion 41 and the second limiting protrusion can also be set as intermittent annular protrusions, but it is necessary to ensure that the protruding part of the first limiting protrusion 41 does not come off from the intermittent part of the second limiting protrusion 34, and similarly, the protruding part of the second limiting protrusion 34 does not come off from the intermittent part of the first limiting protrusion 41, so as to ensure that the valve core 3 can rotate stably on the valve seat 2.

[0074] In addition, the present application also includes the operation portion 5, please refer to figure 1 and figure 2, the operation portion 5 can be connected with the valve core 3, so as to drive the relative movement of the two valve cores 3 and / or drive the circumferential transmission of the two valve cores 3. That is to say, the operation portion 5 can have three functions, one is to drive the relative movement of the two valve cores 3, the second is to drive the circumferential transmission of the two valve cores 3, that is, the circumferential synchronous rotation, and the third is to drive the relative movement of the two valve cores 3 and drive the circumferential synchronous rotation of the two valve cores 3 after the relative movement.

[0075] The operation part 5 can also be an exposed structure. When the valve cores 3 are directly and fixedly synchronized to rotate, the operation part 5 can also be equivalent to the constraint mechanism 6, that is, on the one hand, the operation part 5 connects the two valve cores 3, and on the other hand, the operation part 5 controls the two valve cores 3 to synchronously rotate. In addition, if the operation part 5 cannot be equivalent to the constraint mechanism 6, that is, the second case of the above-mentioned two valve cores 3 to synchronously rotate, at this time, a strip-shaped hole (not shown in the figure) can be opened on the limiting part 4, one side of the operation part 5 is connected with the valve core 3, and the other side is located outside the limiting part 4, so that the relative rotation of the two valve cores 3 and the circumferential synchronous rotation of the two valve cores 3 are realized by controlling the operation part 5; and the relative sliding of the two valve cores 3 only needs to control the relative sliding of the two valve seats 2 from the outside, and does not involve the movement of the valve core 3 itself, so that the relative sliding of the two valve cores 3 can be realized without the operation part 5.

[0076] It should be noted that the relational terms herein such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual relationship or order between or among the entities.

[0077] The principles and implementation manners of the present application are described by using specific examples in the present application. The above description of the examples is only used to help understand the method of the present application and its core idea. It should be noted that, for those skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A fluid connector, characterized by, The valve comprises at least two valve seats (2) provided with communication passages (21) and valve cores (3) rotatably arranged on opposite sides of the two valve seats (2) and used for opening and closing the communication passages (21), the valve cores (3) are provided with communication parts (31), a restriction mechanism (6) is arranged between the two valve cores (3) to limit the synchronous rotation of the two valve cores (3), the adjacent contact surfaces of the two valve cores (3) are in sealing contact, and a position state is arranged to make the corresponding communication parts (31) communicate the communication passages (21) on the two valve seats (2).

2. The fluid connector of claim 1, wherein, The restriction mechanism (6) is an integral structure fixedly connected with the two valve cores (3) or a detachable structure fixedly connected with the two valve cores (3).

3. The fluid connector of claim 1, wherein, The communication part (31) comprises a communication hole formed in the valve core (3), and a first sealing assembly (32) for realizing contact sealing is arranged between the adjacent contact surfaces of the two valve cores (3), and the first sealing assembly (32) is located at the outer periphery of the communication hole, so that the communication holes on the two valve cores (3) are in sealed communication.

4. The fluid connector of claim 3, wherein, A second sealing assembly (33) is arranged between the adjacent contact surfaces of the valve core (3) and the corresponding valve seat (2), and the second sealing assembly (33) is located at the outer periphery of the communication passage (21) and / or the outer periphery of the communication hole, so that the communication hole and the communication passage (21) are in sealed communication.

5. The fluid connector of claim 4, wherein, The first sealing assembly (32) comprises a first sealing ring, and the first sealing ring is in interference fit with the adjacent contact surfaces of the two valve cores (3).

6. The fluid connector of claim 4, wherein, The first sealing assembly (32) comprises a first annular protrusion integrally connected with one of the valve cores (3), the first annular protrusion can be elastically deformed, and the first annular protrusion is in interference fit with the contact surface of the other valve core (3).

7. The fluid connector of claim 5 or 6, wherein, The second sealing assembly (33) comprises a second sealing ring, and the second sealing ring is in interference fit with the adjacent contact surfaces of the valve core (3) and the corresponding valve seat (2).

8. The fluid connector of claim 5 or 6, wherein, The second sealing assembly (33) comprises a second annular protrusion integrally connected with one of the valve cores (3), the second annular protrusion can be elastically deformed, and the second annular protrusion is in interference fit with the contact surface of the corresponding valve seat (2). Or, the second sealing assembly (33) comprises a third annular protrusion integrally connected with the valve seat (2), the third annular protrusion has an elastic deformation performance, and the third annular protrusion is in interference fit with the contact surface of the corresponding valve core (3).

9. The fluid connector of claim 1, wherein, The restriction mechanism (6) comprises a clamping piece (61) arranged on one of the valve cores (3) and a clamping piece (62) arranged on the corresponding other valve core (3), and the clamping piece (61) is in limiting clamping with the clamping piece (62).

10. The fluid connector of claim 9, wherein, The clamping piece (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 oppositely bent, the clamping piece (62) comprises a positioning slot (621) arranged on the corresponding another valve core (3) and a containing space (622) arranged at the positioning slot (621), the clamping piece (61) is inserted into the positioning slot (621), and after the clamping piece (61) on one of the valve cores (3) is moved relative to the clamping piece (62) on the corresponding another valve core (3), the positioning hook (612) enters the containing space (622) and abuts against the side wall of the containing space (622) at least in the axial direction of the valve core (3); and after the positioning hook (612) enters the containing space (622), the positioning handle (611) abuts against the slot wall of the positioning slot (621) at least in the circumferential direction of the valve core (3).

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