Fluid connection apparatus

Abstract

A fluid connection apparatus, comprising: a first valve seat (1); a first valve (2) movably arranged on the first valve seat to open and close a communicating channel (5) on the first valve seat; a locking member (3), which can move to a locking position so as to prevent the first valve from moving relative to the first valve seat; and a limiting shoulder (4), which is configured for limiting the locking member during at least part of the movement of the first valve while the first valve is disengaged from a preset position, so as to prevent the locking member from moving to the locking position, and which is capable of releasing the limitation when the first valve moves to the preset position relative to the first valve seat so as to enable the locking member to move to the locking position. In the preset position, the locking member can freely move to the locking position, and during part of the movement of disengagement from the preset position, the limiting shoulder interferes with the locking member, so as to prevent interference from a protruding portion of the locking member, thereby effectively solving the problem of the locking member causing interference outside the preset position.

Description

Fluid connection device

[0001] The present application claims priority to the Chinese patent application No. 202421495205.7, filed on June 26, 2024, and entitled "A fluid connection device", 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 more particularly, to a fluid connection device. BACKGROUND

[0003] The fluid connector mainly includes two connectors, which can be the same or different in structure and are connected to each other for further connection. For convenience of description, one connector is referred to as a connection end, and the other connector is referred to as a counter-connection end.

[0004] In the process of implementing the present application, the inventors found that at least the following problems exist in the prior art: when the connection end and the counter-connection end are connected, the valve needs to be rotated to be closed, and then the locking member is constrained at the closed position. During the rotation of the valve relative to the valve seat, the locking member moves transversely relative to the corresponding locking hole. During the movement of the locking member, it may need to pass through a hole so that the locking member is stretched out in advance, thereby causing interference.

[0005] SUMMARY

[0006] Therefore, the purpose of the present application is to provide a fluid connection device which can effectively solve the problem of interference of the locking member outside the preset position.

[0007] To achieve the above purpose, the present application provides the following technical solutions:

[0008] A fluid connection device, comprising:

[0009] a first valve seat;

[0010] a first valve movably arranged on the first valve seat to open and close a communication passage on the first valve seat;

[0011] a locking member movable to a locking position to prevent the first valve from moving relative to the first valve seat;

[0012] a limiting shoulder for limiting the locking member to prevent the locking member from moving to the locking position during at least part of the movement of the first valve away from the preset position, and capable of releasing the limitation to enable the locking member to move to the locking position when the first valve moves to the preset position relative to the first valve seat.

[0013] In the use of the fluid connection device, when the first valve is moved to the preset position, the limiting shoulder does not restrict the locking member at this time, so that the locking member can enter the locking position to prevent the first valve from rotating relative to the second valve seat, so that the first valve is kept in the preset position, such as the closed position or the open position. In the movement away from the preset position, in order to avoid, interfere, etc., the limiting shoulder limits the locking member at this time, so that the locking member is prevented from moving to the locking position to remove the interference. Through the above analysis, it can be found that by increasing the limiting shoulder, the locking member can freely move to the locking position at the preset position, and is interfered by the limiting shoulder in the movement away from the preset position. In this way, the protruding part of the locking member can be avoided to form interference. In summary, the fluid connection device can effectively solve the problem of interference of the locking member outside the preset position.

[0014] In some technical solutions, the first valve can be moved to a closed position to close the communication passage on the first valve seat, and can be moved to an open position to open the communication passage on the first valve seat. The closed position is the preset position and / or the open position is the preset position.

[0015] In some technical solutions, a locking hole matched with the locking member is further included, and the locking hole is aligned with the locking member when the first valve is moved to the preset position relative to the first valve seat.

[0016] In some technical solutions, the first valve is provided with the locking hole, and the first valve seat is provided with the locking member. The locking member is movably installed on the first valve seat in a direction perpendicular to the movement direction of the first valve, and abuts against the first valve seat through the elastic device.

[0017] In some technical solutions, the side of the first valve facing the locking member has a hole offset from the locking hole. The limiting shoulder is used to limit the locking member to prevent the locking member from moving to the locking position during the movement of the locking member through the hole, so that the locking member is away from the locking position.

[0018] In some technical solutions, a connection end and a docking end are included, and the connection end has the first valve and the first valve seat. The corresponding structure of the docking end is used to drive the first valve to realize opening and closing movement. The corresponding structure is provided with the limiting shoulder.

[0019] In some embodiments, the docking end comprises a second valve and a second valve seat, the second valve being movably arranged on the second valve seat to open and close a communication passage on the second valve seat; an operating structure opposite to the second valve is arranged on the outside of the second valve seat, and the second valve or the operating structure is the corresponding structure.

[0020] In some embodiments, a clamping hook is arranged on the docking end, the first valve is provided with a clamping groove which is rotatably clamped with the clamping hook, and the clamping groove is provided with a slot for accommodating a hook part of the clamping hook on the side away from the docking end, and at least one slot is the hole.

[0021] In some embodiments, the second valve is provided with the clamping hook.

[0022] In some embodiments, the first valve is rotatably arranged on the first valve seat, and the second valve is rotatably arranged on the second valve seat; and the operating structure is a sleeve arranged on the second valve seat. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Fig. 1 is a schematic view of the internal structure of the fluid connection device provided by the embodiments of the present application;

[0025] Fig. 2 is a schematic view of the structure of the docking end provided by the embodiments of the present application;

[0026] Fig. 3 is a schematic view of the structure of the connection end provided by the embodiments of the present application;

[0027] Fig. 4 is a schematic view of the structure of the fluid connection device provided by the embodiments of the present application;

[0028] Fig. 5 is a schematic view of the cross-sectional structure of the fluid connection device provided by the embodiments of the present application;

[0029] Fig. 6 is a schematic view of the structure of the operating structure provided by the embodiments of the present application.

[0030] In the drawings, the following marks are used: first valve seat 1, first valve 2, locking member 3, limiting shoulder 4, communication passage 5, locking hole 6, elastic device 7, hole 8, second valve 9, second valve seat 10, clamping hook 11, clamping groove 12, slot 13, operating part 14, operating structure 15, guide slope 16. DETAILED DESCRIPTION

[0031] The fluid connection device disclosed by the embodiments of the present application effectively solves the problem of interference caused by the locking member outside the preset position.

[0032] 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. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] Please refer to FIG. 1-6, FIG. 1 is a schematic diagram of the internal structure of the fluid connection device provided by the embodiments of the present application; FIG. 2 is a schematic diagram of the structure of the mating end provided by the embodiments of the present application; FIG. 3 is a schematic diagram of the structure of the connecting end provided by the embodiments of the present application; FIG. 4 is a schematic diagram of the structure of the fluid connection device provided by the embodiments of the present application; FIG. 5 is a schematic diagram of the cross-sectional structure of the fluid connection device provided by the embodiments of the present application; and FIG. 6 is a schematic diagram of the structure of the operating structure provided by the embodiments of the present application.

[0034] In some embodiments, a fluid connection device is provided, and in related embodiments, the fluid connection device can be understood as a fluid connector to include a mating connecting end and mating end, and of course the fluid connection device can also be understood as a connecting end of a fluid connector.

[0035] In some embodiments, the fluid connection device includes a first valve seat 1, a first valve 2, a locking member 3 and a limiting shoulder 4. Generally, the connecting end is provided with the first valve 2 and the first valve seat 1, and the locking member 3 can be arranged on the mating end or the connecting end. Similarly, the limiting shoulder 4 can be arranged on the mating end or the connecting end.

[0036] In some embodiments, the first valve 2 is movably arranged on the first valve seat 1 to open and close the communication passage 5 on the first valve seat 1, so that when the communication passage 5 is opened, the fluid can be communicated with the communication passage 5 on the other connecting head, and when the communication passage 5 is closed, the fluid cannot be communicated with the communication passage 5 on the other connecting head. The movement of the first valve 2 can be sliding, rotating, etc., which can be set as needed.

[0037] In some embodiments, the locking member 3 can be moved to the locking position, generally by the driving of the elastic device 7. When the first valve 2 is moved to the preset position relative to the first valve seat 1, the locking member 3 can be moved to the locking position to prevent the movement of the first valve 2 relative to the first valve seat 1, so as to lock the first valve 2, and thus keep the first valve 2 at the current preset position. The locking member 3 enters the locking position to lock the movement of the first valve 2, which can be achieved by pin hole cooperation, engagement or other ways. It should be noted that the prevention of the movement of the first valve 2 relative to the first valve seat 1 can be directly between the first valve 2 and the first valve seat 1, or indirectly between other structures fixed with the above two structures.

[0038] In some embodiments, the limiting shoulder 4 is used to limit the locking member 3 to prevent the movement of the locking member 3 to the locking position during at least part of the movement of the first valve 2 out of the preset position, and can be released to allow the locking member 3 to move to the locking position when the first valve 2 is moved to the preset position relative to the first valve seat 1. It should be noted that no matter where the limiting shoulder 4 is installed, it needs to ensure that the limiting shoulder 4 moves relative to the locking member 3 during the movement of the first valve 2 relative to the first valve seat 1 to constrain the locking member 3. Specifically, in order to better achieve this effect, the limiting shoulder 4 is generally a limiting protrusion, which forms an abutting relationship with the locking member 3 during at least part of the movement of the first valve 2 out of the preset position to prevent the locking member 3 from entering or moving to the locking position; and when the first valve 2 is moved to the preset position, the constraint can be released to allow the locking member 3 to enter the locking position.

[0039] In some embodiments, when the fluid connection device is used, when the first valve 2 is moved to the preset position, the limiting shoulder 4 does not constrain the locking member 3, so that the locking member 3 can enter the locking position to prevent the first valve 2 from rotating relative to the second valve seat 10, so that the first valve 2 remains at the preset position, such as the closed position or the open position. During the movement out of the preset position, in order to avoid interference, the limiting shoulder 4 limits the locking member 3 to prevent the locking member 3 from moving to the locking position to avoid interference. Through the above analysis, it can be found that by adding the limiting shoulder 4, the locking member 3 can be freely moved to the locking position at the preset position, and is interfered by the limiting shoulder 4 during part of the movement out of the preset position, so that the protruding part of the locking member 3 does not interfere. In summary, the fluid connection device can effectively solve the problem of interference of the locking member 3 out of the preset position.

[0040] In some technical solutions, considering that the first valve 2 can be moved to a closed position to close the communication passage 5 on the first valve seat 1 and can be moved to an open position to open the communication passage 5 on the first valve seat 1, and the closed position is the preset position and / or the open position is the preset position.

[0041] In some embodiments, generally, the locking member 3 can be a locking pin, and a corresponding locking hole 6 matched with the locking member 3 can also be provided, which can be arranged on the first valve 2 and the first valve seat 1 or other relatively fixed structures, respectively, to constrain the relative position relationship between the first valve 2 and the first valve seat 1.

[0042] When the first valve 2 is moved to the preset position relative to the first valve seat 1, the locking hole 6 is arranged in alignment with the locking member 3, at this time the locking member 3 can enter the locking hole 6 under the pushing of the elastic device 7, and then the locking member 3 enters the locking position to limit the movement of the first valve 2. When there are multiple preset positions, multiple locking holes 6 can be correspondingly provided, and of course some locking holes 6 can also be reused in other ways.

[0043] In some embodiments, specifically, the first valve 2 can be provided with the locking hole 6, and the first valve seat 1 can be provided with the locking member 3, which can be movably installed on the first valve seat 1 along a direction perpendicular to the movement direction of the first valve 2 and abut against the first valve seat 1 through the elastic device 7. Specifically, the first valve 2 is rotated relative to the first valve seat 1 to realize opening and closing, and then the movement direction of the locking member 3 is the axis direction of the first valve 2, which is generally arranged at the edge portion of the first valve 2 to be eccentric to the axis of the first valve 2. The elastic device 7 can be a spring, such as a compression spring, and of course can also be an elastic body or other elastic device 7.

[0044] Generally, the locking member 3 has an exposed operating portion 14, and the operating portion 14 and the body of the locking member 3 are connected through a handle portion, and the handle portion penetrates the first valve seat 1. In addition, a shoulder can be arranged on the first valve seat 1, so that after the locking member 3 exits the locking position, the locking member 3 can be rotated to be clamped into the shoulder to realize limiting. A guide slope is arranged on the rear side of the shoulder or on the rear side of the handle portion, so that when the handle portion moves backward, the locking member 3 is guided to rotate through the guide slope to be disengaged from the shoulder to be able to be extended. Of course, it can also be realized in other ways.

[0045] In some embodiments, specifically, the side of the first valve 2 facing the locking member 3 can be provided with a hole 8 offset from the locking hole 6, and the limiting shoulder 4 is used to limit the locking member 3 to prevent the locking member 3 from moving to the locking position during the locking member 3 passing through the hole 8, so that the locking member 3 is out of the locking position. The limiting shoulder 4 contacts the hole 8 to limit the locking member 3. The above-mentioned hole 8 can be a weight-reducing hole 8, or a hole 8 for accommodating other components, such as a receiving groove.

[0046] In some embodiments, specifically, the fluid connection device can be a connection end and a counterpart end which are connected to each other, wherein the connection end is provided with the first valve 2 and the first valve seat 1. The counterpart end is provided with corresponding structures for driving the first valve 2 to open and close, and the limiting shoulder 4 is arranged on the corresponding structures. Of course, the limiting shoulder 4 can also be arranged on the first valve 2, but considering the limited space on the first valve 2. Arranging the limiting shoulder 4 on the counterpart end can avoid the problem of limited space. Further, the corresponding structures can also be used for clamping connection with the first valve 2 or the first valve seat 1.

[0047] In some embodiments, the fluid connection device can be a connection end provided with the first valve 2 and the first valve seat 1, and the limiting shoulder 4 can be arranged on the first valve 2, and the corresponding locking hole 6 is arranged on the first valve 2, and the locking member 3 is arranged on the first valve seat 1. Of course, the limiting shoulder 4 can also be arranged on the first valve seat 1, and the corresponding locking hole 6 is arranged on the first valve seat 1, and the locking member 3 is arranged on the first valve 2.

[0048] In some embodiments, when the counterpart end exists, the counterpart end can be provided only with the communication passage 5 for connecting with the connection end, and the counterpart end can not be provided with the valve or the valve seat. However, in order to facilitate operation, the counterpart end is preferably provided with the second valve 9 and the second valve seat 10, wherein the second valve 9 is movably arranged on the second valve seat 10 to open and close the communication passage 5 on the second valve seat 10.

[0049] The outer side of the second valve seat 10 is provided with an operation structure 15 fixed relative to the second valve 9, and the second valve 9 or the operation structure 15 is the corresponding structure to arrange the limiting shoulder 4.

[0050] The second valve 9 or the operation structure 15 is provided with a pushing part to push the first valve 2 to rotate synchronously.

[0051] In some embodiments, the second valve seat 10 can be the corresponding structure, and the second valve seat 10 is provided with the limiting shoulder 4. At this time, the second valve seat 10 is used to push the first valve 2 to rotate, so as to keep the first valve 2 to rotate synchronously.

[0052] In some embodiments, the abutting end can be provided with a clamping hook 11, and the first valve 2 can be provided with a clamping groove 12 which is rotatably clamped with the clamping hook 11, so as to be clamped with each other. The clamping groove 12 is provided with a slot 13 which is used to accommodate the hook of the clamping hook 11 at the side away from the abutting end, and at least one clamping groove 12 is the hole 8. When the hook is moved in the slot 13, there is always a part of space which cannot be filled, and an interference locking cavity is formed at this time.

[0053] In some embodiments, the second valve 9 can be provided with the clamping hook 11, so as to be rotatably clamped between the second valve 9 and the first valve 2. Specifically, the clamping hook 11 can include a handle and a hook which is protruded along the circumferential direction around the rotation axis of the first valve 2, and the protruding direction is consistent with the pushing direction, and the hook constitutes a clamping part, so that the clamping part is rotated along the circumferential direction to realize the rotation clamping. The corresponding clamping groove 12 is used to make the clamping hook 11 extend along the rotation axis direction, and then the clamping hook 11 is rotated around the rotation axis relative to the clamping groove 12, so that the clamping part is arranged opposite to the clamping shoulder, so as to abut in the extension direction of the rotation axis, so as to prevent the disengagement in the abutting direction. Specifically, the clamping groove 12 is formed with a clamping shoulder at the side of the slot depth direction away from the abutting end, and in front of the pushing direction, so that after the clamping hook 11 enters the clamping groove 12, the hook will enter the end of the clamping groove 12 in the slot depth direction away from the abutting end, so as to realize the abutment.

[0054] In some embodiments, the first valve 2 can be rotatably installed on the first valve seat 1, and the second valve 9 can be rotatably installed on the second valve seat 10. Correspondingly, the operation structure 15 can be a sleeve which is sleeved on the second valve seat 10.

[0055] In some embodiments, in use, the abutting end and the connecting end are relatively moved along the axial direction, and correspondingly, the second valve 9 is moved relative to the first valve 2 along the axial direction, so that the hook of the clamping hook 11 passes through the clamping groove 12. Then the operation structure 15 is driven to rotate, so as to drive the second valve 9 to rotate relative to the first valve 2, so as to complete the abutment of the end of the clamping hook 11 and the clamping groove 12, so as to be axially clamped, so as to realize the clamping. Further, the hook handle of the clamping hook 11 will abut with one end of the clamping groove 12, so as to form a pushing relationship, so that the second valve 9 continues to rotate, which can drive the first valve 2 to continue to rotate, so as to make the first valve 2 and the second valve 9 open synchronously. Before the rotation opening, the limiting shoulder 4 on the operation structure 15 abuts with the operation part 14 on the locking piece 3, so as to prevent the locking piece 3 from extending out. After passing through the corresponding slot 13, the locking piece 3 is released by the guide slope 16, and at this time, the locking piece 3 can still be limited by the first valve 2, so as to make it unable to continue to rotate.

[0056] The various embodiments described in this specification are intended to be illustrative only and in no way limit the scope of the application. Changes and modifications can be made by those skilled in the art, which employ the principles of the application, without departing from the scope of the application. Accordingly, the application is not limited to the embodiments described herein, but instead has scope to encompass any choice whatsoever that is dependent on, or can be substituted in, the principal features of the application as recited in any issued claims.

[0057] The above description of disclosed embodiments is intended to be illustrative only and not limiting of the application. Numerous modifications to these embodiments can be made by those skilled in the art without departing from the spirit or scope of the application. The scope of the application is not limited to the embodiments described herein, but rather is intended to encompass any and all changes and modifications that are within the scope of the claims.

Claims

1. A fluid connection device, characterized in that, include: First valve seat (1); A first valve (2) is movably disposed on the first valve seat (1) to open and close the communication channel (5) on the first valve seat (1); The locking element (3) is movable to the locked position to prevent the first valve (2) from moving relative to the first valve seat (1); The limiting shoulder (4) is used to limit the locking member (3) to prevent the locking member (3) from moving to the locking position during at least a partial movement of the first valve (2) away from the preset position, and can release the limiting shoulder to allow the locking member (3) to move to the locking position when the first valve (2) moves to the preset position relative to the first valve seat (1).

2. The fluid connection device according to claim 1, characterized in that, The first valve (2) is movable to the closed position to close the communication channel on the first valve seat (1), and is movable to the open position to open the communication channel (5) on the first valve seat (1), wherein the closed position is the preset position and / or the open position is the preset position.

3. The fluid connection device according to claim 2, characterized in that, It also includes a locking hole (6) that cooperates with the locking member (3). When the first valve (2) moves to a preset position relative to the first valve seat (1), the locking hole (6) is aligned with the locking member (3).

4. The fluid connection device according to claim 3, characterized in that, The first valve (2) is provided with the locking hole (6), and the first valve seat (1) is provided with a locking member (3). The locking member (3) is movably installed on the first valve seat (1) in a direction perpendicular to the movement of the first valve (2), and abuts against the first valve seat (1) through an elastic device (7).

5. The fluid connection device according to claim 4, characterized in that, The first valve (2) has a hole (8) on the side facing the locking member (3) that is offset from the locking hole (6). The limiting shoulder (4) is used to limit the locking member (3) during the process of the locking member (3) passing through the hole (8) to prevent the locking member (3) from moving to the locking position so that the locking member (3) is disengaged from the locking position.

6. The fluid connection device according to claim 5, characterized in that, It includes a connecting end and a docking end that are connected to each other. The connecting end has the first valve (2) and the first valve seat (1). The corresponding structure of the docking end is used to drive the first valve (2) to realize the opening and closing activities. The corresponding structure is provided with the limiting shoulder (4).

7. The fluid connection device according to claim 6, characterized in that, The docking end includes a second valve (9) and a second valve seat (10). The second valve (9) is movably disposed on the second valve seat (10) to open and close the communication channel (5) on the second valve seat (10). An operating structure (15) is provided on the outside of the second valve seat (10) and is fixed relative to the second valve (9). The second valve (9) or the operating structure (15) is the corresponding structure.

8. The fluid connection device according to claim 7, characterized in that, The docking end is provided with a hook (11), and the first valve (2) is provided with a groove (12) that rotates and engages with the hook (11). The groove (12) has a slot (13) on the side away from the docking end to accommodate the hook part of the hook (11), and at least one of the slots (13) is the hole (8).

9. The fluid connection device according to claim 8, characterized in that, The second valve (9) is provided with the hook (11).

10. The fluid connection device according to claim 9, characterized in that, The first valve (2) is rotatably mounted on the first valve seat (1), and the second valve (9) is rotatably mounted on the second valve seat (10); the operating structure (15) is a sleeve fitted onto the second valve seat (10).

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