Fluid coupling and method of assembly

Abstract

The application relates to a fluid coupler and an assembling method, and belongs to the technical field of pipe joints. The fluid coupler solves the defects of current fluid couplers, and comprises a valve body, a ball core arranged in the valve body, a handle connected with the ball core, a self-locking mechanism arranged between the handle and the valve body, a hook groove arranged at the end of the valve body, a valve hook arranged at the first end of the hook groove, a mutual locking mechanism arranged at the second end of the hook groove, a self-locking piece, a self-locking pin fixed on the circumferential side of the valve body and arranged along the tangential direction of the valve body, a first elastic piece arranged between the self-locking piece and the valve body, a first end of the self-locking piece extending into the hook groove, a locking rod arranged on the circumferential side of the valve body in a sliding mode, a second elastic piece arranged between the locking rod and the valve body, a groove matched with the second end of the self-locking piece arranged on the circumferential surface of the locking rod, and a clamping groove matched with the second end of the locking rod arranged on the handle. The fluid coupler can be opened only after being assembled in place, so that the safety hidden danger caused by misoperation is avoided.

Description

Technical Field

[0001] This invention relates to the field of pipe fitting technology, and more specifically to a fluid coupler and its assembly method. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] A fluid coupler is a pipe fitting component that connects pipes containing liquid. In the non-operating state, the fluid coupler needs to remain closed. The handle of the fluid coupler is locked using a self-locking mechanism, preventing it from being turned to open. After two fluid couplers are mated to connect two pipes containing liquid, the fluid couplers need to be switched to the open state. When mating fluid couplers, the mating ends must first be pre-assembled. Then, the two fluid couplers are rotated relative to each other to complete the assembly. After assembly, the two fluid couplers are locked using an interlocking mechanism. The self-locking mechanism is then released, and the two fluid couplers can be opened using the handle. Patent application CN120584253A discloses a fluid coupler in which, during the assembly process, before the two fluid couplers are pre-assembled and rotated to their final position, the pin used to lock the handle of the fluid coupler is pressed down. At this time, the handle is in an unlocked state. Before the two fluid couplers are fully coupled, the handle can be rotated to open the fluid coupler. This poses a risk of accidental opening before the fluid coupler is fully coupled, creating a safety hazard. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a fluid coupler and its assembly method. The two fluid couplers can only be opened by operating the handle after they are fully rotated and coupled, thus avoiding the risk of opening due to misoperation before the fluid couplers are fully rotated and coupled.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: In a first aspect, embodiments of the present invention provide a fluid coupler, including a valve body, a ball core disposed within the valve body, the ball core being connected to one end of a handle, a self-locking mechanism being provided between the handle and the valve body to lock and fix the handle and the valve body, a hook groove being provided at the assembly end of the valve body, a valve hook being provided on one side of the first end of the hook groove, and an interlocking mechanism installed on the valve body being provided on one side of the second end of at least one hook groove, the self-locking mechanism including a self-locking member, the self-locking member being slidably connected to a self-locking pin fixed on the periphery of the valve body and disposed tangentially along the valve body, a first elastic member being provided between the self-locking member and the valve body, the first end of the self-locking member extending into the first end of the corresponding hook groove through a sliding groove provided on the valve body, a locking rod being slidably connected to the periphery of the valve body, a second elastic member being provided between the locking rod and the valve body, a groove matching the second end of the self-locking member being provided on the periphery of the locking rod, and a slot matching the end of the locking rod being provided on the handle; The first end of the self-locking component can move at the first end of the hook groove so that the second end of the self-locking component can switch from the state of being inserted into the groove to the state of being disengaged from the groove. The locking rod can move axially when the second end of the self-locking component is disengaged from the groove so as to switch the locking rod end from being inserted into the groove to being disengaged from the groove.

[0006] Optionally, the interlocking mechanism includes a locking rod disposed on one side of the second end of the hook groove. The locking rod is located in the mounting groove provided at the valve body assembly end. The non-end setting position of the locking rod is rotatably connected to the valve body. The inner end of the locking rod serves as the locking end. A third elastic element is provided between the outer end of the locking rod and the valve body. The locking rod can rotate to switch between the locking end blocking the second end of the hook groove and opening the second end of the hook groove. The handle is provided with a push rod that matches the outer end of the locking rod.

[0007] Optionally, the end of the handle connected to the ball core is provided with an arc-shaped groove, and the outer wall of the arc-shaped groove is provided with a slot. The locking rod includes a first rod portion, which is provided with a groove that matches the second end of the locking member. One end of the first rod portion is connected to one end of the second rod portion, and the other end of the second rod portion is provided with a locking head that matches the slot. The diameter of the second rod portion is smaller than the diameter of the locking head so that when the locking head moves along the axis of the locking rod into the arc-shaped groove, the second rod portion is located outside the slot.

[0008] Optionally, multiple slots are provided along the circumferential direction of the arc-shaped groove.

[0009] Optionally, the self-locking component adopts an L-shaped structure, including a first self-locking part and a second self-locking part connected vertically. The first self-locking part and the second self-locking part are slidably connected to the self-locking pin at the intersection position. One end of the first self-locking part is connected to the second self-locking part, and the other end serves as the first end and extends into the groove through the slide groove provided by the valve body. One end of the second self-locking part is connected to the first self-locking part, and the other end serves as the second end and matches the groove provided by the locking rod.

[0010] Optionally, the groove is an annular arc-shaped groove, and correspondingly, the second end of the locking rod for engaging with the groove adopts an arc-shaped surface that matches the groove.

[0011] Optionally, the valve hook adopts an L-shaped structure, including a first hook portion fixed to the valve body and a second hook portion disposed at the outer end of the first hook portion. The second hook portion matches the hook groove. Correspondingly, a valve hook is disposed on one side of the hook groove, and an initial assembly groove matching the first hook portion is disposed on the other side of the hook groove.

[0012] Optionally, the valve body is provided with a liquid flow channel, the liquid flow channel is provided with a ball core inside, and the liquid flow channel is provided with a sealing ring at the liquid inlet and outlet formed at the assembly end of the valve body.

[0013] Optionally, a locking hole is provided at a set position on the edge of the assembly end face of the valve body.

[0014] In a second aspect, embodiments of the present invention provide an assembly method for the fluid coupler described in the first aspect, for docking a first fluid coupler and a second fluid coupler, comprising the following steps: The assembly ends of the first fluid coupler and the second fluid coupler are initially connected. The valve hook of the first fluid coupler is located on one side of the corresponding hook groove of the second fluid coupler, and the valve hook of the second fluid coupler is located on one side of the corresponding hook groove of the first fluid coupler. The first fluid coupler and the second fluid coupler rotate relative to each other until they are in position. During the relative rotation of the first fluid coupler and the second fluid coupler, the valve hook of the second fluid coupler enters the corresponding hook groove of the first fluid coupler and drives the locking member of the first fluid coupler to move along the self-locking pin. The second end of the locking member of the first fluid coupler disengages from the groove of the locking rod. The valve hook of the first fluid coupler enters the corresponding hook groove of the second fluid coupler and drives the locking member of the second fluid coupler to move along the self-locking pin. The second end of the locking member of the second fluid coupler disengages from the groove of the locking rod. Push the locking lever of the first fluid coupler and the second fluid coupler to separate the chuck from the chuck, release the locking state between the handle of the first fluid coupler and the second fluid coupler and the valve body, and turn the handle to open the first fluid coupler and the second fluid coupler; The interlocking mechanism locks and secures the first fluid coupler and the second fluid coupler. Release the locking lever, the locking lever will return to its original position, and the locking head will engage with the slot to lock and secure the handle.

[0015] The beneficial effects of this invention are as follows: The fluid coupler and assembly method of the present invention have a first end of a self-locking member located within the first end of a hook groove, and a second end matching the groove of a locking rod. The end of the locking rod is locked and fixed to the handle via a slot provided on the handle. When the two fluid couplers rotate relative to each other after engagement, when the valve hook of one fluid coupler moves to the first end of the corresponding hook groove, it can drive the self-locking member to move along the self-locking pin, thereby causing the second end of the self-locking member to disengage from the groove. At this time, the locking rod can move, releasing the locking rod from the handle. Since the two fluid couplers are in the rotated-to-position state when the valve hook moves to the first end of the hook groove, the locking state between the handle and the valve body can only be released after the two fluid couplers have rotated to the position. Then, the two fluid couplers can be opened by rotating the handle, avoiding the liquid leakage caused by accidental opening of the fluid coupler before the traditional fluid coupler is rotated to the position, and avoiding safety hazards to the assembly personnel. Attached Figure Description

[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention in its open state. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention in its open state. Figure 2 ; Figure 3 This is a schematic diagram of the self-locking mechanism, interlocking mechanism, handle, and ball core in the open state of Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention in the closed state. Figure 1 ; Figure 5 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention in the closed state. Figure 2 ; Figure 6 This is a schematic diagram of the self-locking mechanism, interlocking mechanism, handle, and ball core in the closed state of Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the valve body structure in Embodiment 1 of the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the valve body structure in Embodiment 1 of the present invention. Figure 2 ; Figure 9 This is a schematic diagram of the handle structure in Embodiment 1 of the present invention; Figure 10 This is a schematic diagram of the first and second fluid couplers assembled according to Embodiment 2 of the present invention; Among them, 1. valve body, 2. nut, 3. ball core, 4. handle, 5. first valve hook, 6. second valve hook, 7. hook groove, 8. initial assembly groove, 9. baffle, 10. self-locking component, 11. self-locking pin, 12. locking rod, 13. pin seat, 14. first spring, 15. rod seat, 16. second spring, 17. locking rod, 18. mounting groove, 19. third spring, 20. push rod, 21. sealing ring, 22. locking hole; 401. Card slot; 402. Arc-shaped groove; 1001. First self-locking part; 1002. Second self-locking part; 1201. Groove, 1202. First rod, 1203. Second rod, 1204. Clip. Detailed Implementation

[0018] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0019] Example 1 This embodiment provides a fluid coupler, such as Figures 1-6 As shown, the device includes a valve body 1, which has a liquid flow channel inside. The liquid flow channel is coaxially arranged with the valve body 1 and extends through the valve body 1 along its axial direction, thereby forming a liquid inlet and outlet at both ends of the valve body 1. One end of the valve body 1 serves as an assembly end for assembly with another fluid coupler, and the other end of the valve body 1 is used to connect to a pipeline. A nut 2 is welded and fixed to the end of the valve body used to connect to the pipeline, and the valve body 1 can connect to the pipeline through the nut 2.

[0020] A ball core 3 is provided inside the liquid flow channel. The ball core 3 is connected to one end of the handle 4 through a connecting component. The connecting component is rotatably connected to the valve body 1. One end of the connecting component is fixed to the ball core 3, and the other end is fixed to the handle 4. The handle 4 can drive the ball core 3 to rotate through the connecting component, thereby realizing the switching between the open and closed states of the liquid flow channel.

[0021] The structure of the ball core 3 and the connecting component, as well as the connection method between the ball core 3 and the connecting component and the connection method between the connecting component and the handle 4, can be achieved using existing technologies. Further technical details will not be described in detail here.

[0022] A self-locking mechanism is provided between the handle 4 and the valve body 1. The self-locking mechanism is used to lock and fix the handle 4 and the valve body 1.

[0023] The valve body 1 is also provided with an interlocking mechanism at the assembly end, which is used to lock and fix the two assembled fluid couplers.

[0024] In this embodiment, when assembling the two fluid couplers, after the end faces of the two fluid couplers are properly aligned, the two fluid couplers need to be rotated relative to each other. After the rotation is completed, the two fluid couplers are assembled in place, and then the interlocking mechanism is used to lock and fix the two fluid couplers together.

[0025] To meet the above assembly requirements, the assembly end of the valve body 1 is provided with a valve hook and a matching hook groove 7. After initial assembly, the valve hooks of two adjacent fluid couplers are located on one side of the hook groove 7. After the two fluid couplers rotate relative to each other, the valve hook rotates into the corresponding hook groove 7, realizing the cooperation between the valve hook and the hook groove 7, thereby achieving the axial locking and fixing of the two fluid couplers. An interlocking mechanism is provided on one side of at least one hook groove 7. After the two fluid couplers rotate into position, for the valve hook in one fluid coupler, one side of its valve hook is in contact with the valve hook of the other fluid coupler, and the other side cooperates with the interlocking mechanism, thereby restricting the relative rotation between the two fluid couplers, and thus achieving the locking and fixing between the two fluid couplers.

[0026] In this embodiment, there are two valve hooks at the assembly end of the valve body 1, and the widths of the two valve hooks are different. The two valve hooks are spaced 180° apart along the circumference of the valve body 1.

[0027] The wider valve hook is designated as the first valve hook 5, and the narrower valve hook is designated as the second valve hook 6. The specific widths of the first valve hook 5 and the second valve hook 6 can be set according to actual needs and will not be described in detail here.

[0028] Correspondingly, two hook grooves 7 are also provided. The two hook grooves 7 are arranged 180° apart along the circumference of the valve body 1. In this embodiment, the two hook grooves 7 and the two valve hooks are arranged alternately, that is, the valve hook is located on one side of the hook groove 7. In this embodiment, a valve hook is provided on one side of the first end of the hook groove 7, and an initial assembly groove 8 is provided on one side of the second end of the hook groove 7. The initial assembly groove 8 can reserve space to match the valve hook, thereby realizing the fitting of the valve hook with the assembly end face of the valve body 1, and then the relative rotation between the two fluid couplers is performed.

[0029] In this embodiment, as Figures 7-8 As shown, the hook groove 7 and the initial assembly groove 8 are formed in the following specific ways: An annular groove is provided on the assembly end face of the valve body 1. The annular groove is coaxial with the valve body 1. Two baffles 9 are provided on the upper part of the side groove surface of the annular groove. The baffles 9 are arc-shaped plates and are integrally connected to the valve body 1. The baffles 9 are parallel to the bottom groove surface of the annular groove. The two baffles 9 are spaced 180° apart along the circumferential direction of the valve body. A hook groove 7 is formed between the baffles 9 and the bottom groove surface of the annular groove.

[0030] A valve hook is provided on one side of the first end of the hook groove 7. The bottom end of the first valve hook 5 is integrally fixed with the bottom groove surface of the annular groove. The side of the first valve hook 5 near the first end of the hook groove 7 has a notch corresponding to the first end of the hook groove 7. The notch is used to reserve space for the movement of the self-locking component 10 in the self-locking mechanism.

[0031] The bottom end of the second valve hook 6 is integrally fixed to the bottom surface of the annular groove.

[0032] The first valve hook 5 and the second valve hook 6 are both distributed along the inner edge of the annular groove.

[0033] The valve hook adopts an L-shaped structure, including a first hook part and a second hook part vertically disposed at the outer end of the first hook part. One end of the first hook part is fixed to the bottom groove surface of the annular groove, and the other end is vertically fixed to the second hook part.

[0034] The second hook matches the hook groove 7. In the two fluid couplers, the second hook of one fluid coupler can enter the hook groove 7 corresponding to the other fluid coupler. Through the cooperation of the second hook and the hook groove 7, the two fluid couplers are locked along the axial direction.

[0035] In the fluid coupler, the first end of the hook groove 7, which is used to cooperate with the first valve hook of another fluid coupler, is engaged with a self-locking mechanism, and an interlocking mechanism is provided on one side of the second end.

[0036] The self-locking mechanism includes a self-locking pin 11, a self-locking component 10, a locking rod 12, a first elastic component, and a second elastic component.

[0037] The self-locking pin 11 is disposed on the periphery of the valve body 1 and is disposed tangentially to the valve body 1. One end of the self-locking pin 11 is fixed on the pin seat 13. The self-locking pin 11 includes a rod portion, one end of which is provided with a head. The diameter of the head is larger than the diameter of the rod portion. The end of the rod portion used to connect the head is fixed on the pin seat 13. The pin seat 13 is integrally fixed on the periphery of the valve body 1.

[0038] The self-locking pin 11 passes through the self-locking member 10, and the self-locking member 10 is slidably connected to the self-locking pin 11. The self-locking member 10 can move linearly along the axial direction of the self-locking pin 11.

[0039] A first elastic element is provided between the self-locking element 10 and the valve body 1. The first elastic element is used to reset the self-locking element 10.

[0040] The first end of the self-locking member 10 extends into the inner space of the first end of the corresponding hook groove 7 through a sliding groove provided on the periphery of the valve body 1, and the second end of the self-locking member 10 is used to cooperate with the groove 1201 on the locking rod 12.

[0041] The self-locking member 10 moves along the axial direction of the self-locking pin 11, enabling the switching between the state where the second end of the self-locking member 10 engages with the groove 1201 and the state where the second end of the self-locking member 10 disengages from the groove 1201. When the second end of the self-locking member 10 engages with the groove 1201, the self-locking member 10 can restrict the axial movement of the locking rod 12. When the second end of the self-locking member 10 disengages from the groove 1201, the self-locking member 10 cannot restrict the axial movement of the locking rod 12.

[0042] In this embodiment, the self-locking component 10 adopts an L-shaped structure, including a first self-locking part 1001 and a second self-locking part 1002 that are vertically connected. One end of the first self-locking part 1001 is vertically connected to one end of the second self-locking part 1002. The other end of the first self-locking part 1001 serves as the first end, which extends into the inner space of the first end of the hook groove 7 through the sliding groove provided in the valve body 1. The other end of the second self-locking part 1002 serves as the second end and is used to cooperate with the groove 1201 of the locking rod 12.

[0043] The self-locking pin 11 is slidably connected to the self-locking member 10 at the intersection of the first self-locking part 1001 and the second self-locking part 1002.

[0044] The first elastic element is a first spring 14, one end of which is connected to the self-locking element 10, and the other end is connected to the head of the self-locking pin 11.

[0045] The locking rod 12 is fixedly disposed on the periphery of the valve body 1. Specifically, a rod seat 15 is integrally fixed on the periphery of the valve body 1. The locking rod 12 passes through the rod seat 15 and is slidably connected to the rod seat 15. The locking rod 12 can move linearly along its own axis.

[0046] The locking rod 12 includes a first rod portion 1202 and a second rod portion 1203 arranged coaxially in sequence. The first rod portion 1202 is slidably connected to the rod seat 15. One end of the second rod portion 1203 is connected to the first rod portion 1202, and the other end of the second rod portion 1203 is provided with a locking head 1204.

[0047] The first rod portion 1202 is provided with a groove 1201.

[0048] In this embodiment, the groove 1201 is an annular arc-shaped groove provided on the circumferential surface of the first rod portion 1202. Correspondingly, the second end of the second self-locking portion 1002, which is used to cooperate with the annular arc-shaped groove, adopts an arc-shaped surface that matches the arc-shaped groove.

[0049] The axis of the locking rod 12 is also set along the tangent of the valve body 1, and there is a set acute angle between the locking rod 12 and the self-locking pin 11. The set acute angle allows the second end of the second self-locking part 1002 to smoothly disengage from the groove 1201 when the self-locking part 10 moves along the axis of the self-locking pin 11. The set acute angle can be determined according to the design requirements and will not be described in detail here.

[0050] A second elastic element is provided between the locking rod 12 and the valve body 1. In this embodiment, the second elastic element is provided between the locking rod 12 and the rod seat 15. The second elastic element is a second spring 16. One end of the second spring 16 is connected to the circumferential boss provided at the end of the locking rod 12, and the other end is connected to the rod seat 15. The second spring 16 is used to reset the locking rod 12.

[0051] The handle 4 is provided with a slot 401 at the end of the connecting component. The locking head 1204 at the end of the locking rod 12 can cooperate with the slot 401 to lock the handle 4. When the locking head 1204 disengages from the slot 401, the locking state of the handle 4 can be released. At this time, the handle 4 can swing freely, thereby driving the ball core 3 to rotate and realize the switching between the open and closed states of the liquid flow channel.

[0052] In this embodiment, as Figure 9 As shown, the card slot 401 is formed in the following manner: An arc-shaped groove 402 is provided on the end face of the handle 4 used to connect the connecting component. The arc-shaped groove 402 is coaxial with the connecting component, that is, the arc-shaped groove 402 is coaxial with the swing center line of the handle 4.

[0053] A slot 401 is provided on the outer side wall of the arc-shaped groove 402.

[0054] The diameter of the second rod portion 1203 is smaller than the diameter of the first rod portion 1202, and the diameter of the second rod portion 1203 is smaller than the diameter of the locking head 1204. The diameter of the second rod portion 1203 is configured such that the outer end of the circumference of the second rod portion 1203 is located inside the top of the slot 401. In this way, when the locking rod 12 moves along its axial direction, causing the locking head 1204 to enter the arc-shaped groove 402, and the second rod portion 1203 corresponds to the slot 401, the second rod portion 1203 is located outside the slot 401, and the second rod portion 1203 cannot obstruct the rotation of the handle 4.

[0055] In this embodiment, in its natural state, the locking head 1204 of the locking rod 12 is located in the slot 401. The locking rod 12 and the handle 4 are locked together by the engagement of the locking head 1204 and the slot 401. The locking rod 12 locks the handle 4. Pushing the locking rod 12 causes the locking head 1204 to enter the arc-shaped groove 402. At this time, the second rod part 1203 corresponds to the position of the slot 401 and is located outside the slot 401. The locking rod 12 releases the locking state of the handle 4, and the handle 4 can swing to drive the ball core 3 to rotate.

[0056] Preferably, the outer side wall of the arc groove 402 is provided with multiple slots 401, so that the handle 4 can be locked when rotated to different angles, thereby realizing the locking and fixing of the ball core 3 in different opening states.

[0057] In this embodiment, three slots 401 are provided along the circumference of the arc-shaped groove 402, with adjacent slots 401 spaced at 45° intervals. This enables the handle 4 to be locked and fixed in three states. The first state is when the ball core 3 fully opens the liquid flow channel, at which time the length direction of the handle 4 is parallel to the axial direction of the valve body 1. The second state is when the ball core 3 fully closes the liquid flow channel, at which time the length direction of the handle 4 is perpendicular to the axial direction of the valve body 1. The third state is when the ball core 3 makes the liquid flow channel semi-closed, at which time the length direction of the handle 4 forms a 45° angle with the axial direction of the valve body 1.

[0058] In the fluid coupler, an interlocking mechanism is provided on one side of the second end of the hook groove 7 at the assembly end of the valve body 1, which is used to cooperate with the first valve hook 5 of another fluid coupler.

[0059] The interlocking mechanism includes a locking rod 17, which is located in the mounting groove 18 provided at the assembly end of the valve body 1. The non-end position of the locking rod 17 is rotatably connected to the valve body 1. The inner end of the locking rod 17 serves as the locking end, and a third elastic element is provided between the outer end and the valve body 1.

[0060] In this embodiment, the third elastic element is a third spring 19. One end of the third spring 19 abuts against the outer end of the locking rod 17, and the other end is connected to the bottom groove surface of the spring groove provided at the assembly end of the valve body 1.

[0061] The handle 4 is provided with a push rod 20 that matches the outer end of the locking rod 17. A channel is opened on the valve body 1 at the position corresponding to the outer end of the locking rod 17 for the push rod to pass through. The channel is connected to the mounting groove 18, and the diameter of the channel is larger than the outer diameter of the push rod 20, so as to meet the requirement of the push rod 20 pushing the outer end of the locking rod 17.

[0062] When the fluid coupler is in the closed state, the handle 4 is rotated so that its length direction is perpendicular to the axial direction of the valve body 1. At this time, the push rod 20 presses against the outer end of the locking rod 17, and the outer end of the locking rod 17 compresses the third spring 19. The inner end of the locking rod 17 retracts into the mounting groove 18. At this time, the inner end of the locking rod 17 opens the second end of the hook groove 7. When the fluid coupler is assembled, the handle 4 is rotated to open the fluid coupler. The push rod 20 disengages from the outer end of the locking rod 17. Under the elastic force of the third spring 19, the locking rod 17 rotates, and the inner end of the locking rod 17 rotates to the outside of the mounting groove 18. The inner end of the locking rod 17 protrudes from the bottom groove surface of the annular groove. At this time, the inner end of the locking rod 17 closes the second end of the hook groove 7. The inner end of the locking rod 17 can cooperate with the side of the first valve hook 5 of another fluid coupler to restrict the relative rotation between the two fluid couplers.

[0063] In this embodiment, in order to ensure the sealing performance of the two fluid couplers after assembly, a sealing ring 21 is provided on the end face of the assembly end of the valve body 1. The sealing ring 21 is provided along the edge of the liquid inlet and outlet on the end face of the assembly end of the valve body 1. After the two fluid couplers are assembled, the docking end of the liquid flow channel is sealed by the sealing ring 21, which can prevent liquid leakage.

[0064] Furthermore, in order to achieve compatibility with the current fluid coupler, the assembly end of the valve body 1 is provided with a locking hole 22, which matches the locking rod of the assembly end of the existing fluid coupler.

[0065] The locking hole 22 allows the fluid coupler of this embodiment to be assembled with existing fluid couplers, thus improving the applicability of the fluid coupler.

[0066] Example 2 This embodiment provides an assembly method for the fluid coupler described in Embodiment 1, used to connect a first fluid coupler and a second fluid coupler. The first and second fluid couplers have identical structures, both employing the fluid coupler described in Embodiment 1. The assembly method includes the following steps: Step 1: Initially align the assembly ends of the first fluid coupler and the second fluid coupler so that the valve hook of the first fluid coupler is placed into the corresponding initial assembly groove 8, the outer side of the second hook of the valve hook of the first fluid coupler is in contact with the bottom groove surface of the annular groove of the second fluid coupler, and the outer side of the second hook of the valve hook of the second fluid coupler is in contact with the bottom groove surface of the annular groove of the first fluid coupler.

[0067] The sealing rings 21 of the first fluid coupler and the second fluid coupler are sealed and fitted together.

[0068] Under the elastic force of the first spring 14, the second end of the self-locking member 10 remains engaged with the groove 1201, and the first end of the self-locking member 10 is located inside the first end of the hook groove 7.

[0069] Step 2: Rotate the first fluid coupler and the second fluid coupler relative to their axes. The valve hook of the first fluid coupler rotates into the corresponding hook groove 7 of the second fluid coupler, and the valve hook of the second fluid coupler rotates into the corresponding hook groove 7 of the first fluid coupler.

[0070] After the first fluid coupler and the second fluid coupler rotate into position, the valve hook moves to the first end of the hook groove 7, and the first valve hooks 5 of the first fluid coupler and the second fluid coupler fit together, and the second valve hooks 6 fit together.

[0071] For the first fluid coupler, after the first valve hook 5 of the second fluid coupler moves to the first end of the corresponding hook groove 7, it touches the first end of the self-locking member 10 of the first fluid coupler. When the first valve hook 5 of the second fluid coupler moves into place, the first end of the self-locking member 10 is driven to move into the notch opened by the first valve hook 5 of the first fluid coupler. The self-locking member 10 compresses the first spring 14, and the second end of the self-locking member 10 disengages from the groove 1201 of the locking rod 12.

[0072] For the second fluid coupler, after the first valve hook 5 of the first fluid coupler moves to the first end of the hook groove 7, it touches the first end of the self-locking member 10 of the second fluid coupler. After the first valve hook 5 of the first fluid coupler moves into place, the first end of the self-locking member 10 is driven to move into the notch opened by the first valve hook 5 of the second fluid coupler. The self-locking member 10 compresses the first spring 14, and the second end of the self-locking member 10 disengages from the groove 1201 of the locking rod 12.

[0073] Push the locking lever 12 of the first fluid coupler and the second fluid coupler to make the chuck 1202 leave the chuck 401.

[0074] At this time, the handles 4 of both the first and second fluid couplers are unlocked.

[0075] Step 3: Rotate handle 4 to drive ball core 3 to rotate to the open state. Handle 4 pushes the outer end of locking rod 17 through top rod 20. The outer end of locking rod 17 compresses the third spring 19. The inner end of locking rod 17 rotates to protrude from the bottom surface of the annular groove, which limits the first valve hook 5. At this time, the first fluid coupler and the second fluid coupler are locked and fixed, and the first fluid coupler and the second fluid coupler are in the open state.

[0076] Release the locking lever 17. Under the action of the third spring 19, the locking lever 17 returns to its original position, and the chuck 1204 re-engages into the slot 401, thus achieving the locking and fixation between the handle 4 and the valve body 1. After assembly, the first fluid coupler and the second fluid coupler are as follows: Figure 10 As shown.

[0077] When assembling the fluid coupler in this embodiment, the locking rod 12 can only move after the two fluid couplers are rotated to the correct position. Therefore, the locking state between the handle 4 and the valve body 1 can only be released after the two fluid couplers are rotated to the correct position, and the handle 4 can be turned to open the two fluid couplers. This avoids the liquid leakage caused by accidental operation of opening the fluid coupler before the traditional fluid coupler is rotated to the correct position, and avoids the safety hazards to the assembly personnel.

[0078] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fluid coupler, comprising a valve body, a ball core disposed within the valve body, the ball core being connected to one end of a handle, the handle causing the ball core to rotate, a self-locking mechanism being provided between the handle and the valve body to lock and fix the handle to the valve body, the assembly end of the valve body being provided with a valve hook and a hook groove, characterized in that, A valve hook is provided on one side of the first end of the hook groove, and an interlocking mechanism installed on the valve body is provided on one side of the second end of at least one hook groove. The interlocking mechanism is used to restrict the relative rotation between the two fluid couplers after they are rotated into place. The self-locking mechanism includes a self-locking component, which is slidably connected to a self-locking pin fixed on the periphery of the valve body and arranged tangentially to the valve body. A first elastic component is provided between the self-locking component and the valve body. The first end of the self-locking component extends into the first end of the corresponding hook groove through a sliding groove provided on the valve body. A locking rod is also slidably connected on the periphery of the valve body. A second elastic component is provided between the locking rod and the valve body. A groove matching the second end of the self-locking component is provided on the periphery of the locking rod. A slot matching the end of the locking rod is provided on the handle. The first fluid coupler and the second fluid coupler rotate relative to each other. The valve hook of the first fluid coupler rotates into the corresponding hook groove of the second fluid coupler, and the valve hook of the second fluid coupler rotates into the corresponding hook groove of the first fluid coupler. After the first fluid coupler and the second fluid coupler rotate into position, the valve hook moves to the first end of the hook groove. For the first fluid coupler, after the valve hook of the second fluid coupler moves to the first end of the hook groove corresponding to the first fluid coupler, it touches the first end of the self-locking member of the first fluid coupler and drives the first end of the self-locking member to move at the first end of the hook groove so that the second end of the self-locking member switches from the state of being inserted into the groove to the state of being disengaged from the groove. The locking rod can move axially in the state of the second end of the self-locking member being disengaged from the groove to realize the switching of the locking rod end being inserted into the groove and disengaged from the groove.

2. A fluid coupler as described in claim 1, characterized in that, The interlocking mechanism includes a locking rod located on one side of the second end of the hook groove. The locking rod is located in the mounting groove at the valve body assembly end. The non-end setting position of the locking rod is rotatably connected to the valve body. The inner end of the locking rod serves as the locking end. A third elastic element is provided between the outer end of the locking rod and the valve body. The locking rod can rotate to switch between the locking end blocking the second end of the hook groove and opening the second end of the hook groove. The handle is provided with a push rod that matches the outer end of the locking rod. The push rod is used to push the locking rod.

3. A fluid coupler as described in claim 1, characterized in that, The end of the handle connected to the ball core is provided with an arc-shaped groove, and the outer wall of the arc-shaped groove is provided with a slot. The locking rod includes a first rod part, which is provided with a groove that matches the second end of the self-locking component. One end of the first rod part is connected to one end of the second rod part, and the other end of the second rod part is provided with a locking head that matches the slot. The diameter of the second rod part is smaller than the diameter of the locking head so that when the locking head moves along the axis of the locking rod into the arc-shaped groove, the second rod part is located outside the slot.

4. A fluid coupler as described in claim 3, characterized in that, The card slots are provided in multiple directions along the circumference of the arc-shaped groove.

5. A fluid coupler as described in claim 1, characterized in that, The self-locking component adopts an L-shaped structure, including a first self-locking part and a second self-locking part that are vertically connected. The first self-locking part and the second self-locking part are slidably connected to the self-locking pin at the intersection position. One end of the first self-locking part is connected to the second self-locking part, and the other end serves as the first end and extends into the groove through the slide groove provided on the valve body. One end of the second self-locking part is connected to the first self-locking part, and the other end serves as the second end and matches the groove provided on the locking rod.

6. A fluid coupler as described in claim 1, characterized in that, The groove is an annular arc-shaped groove, and correspondingly, the second end of the self-locking member that is used to mate with the groove adopts an arc-shaped surface that matches the groove.

7. A fluid coupler as described in claim 1, characterized in that, The valve hook adopts an L-shaped structure, including a first hook part fixed to the valve body and a second hook part provided at the outer end of the first hook part. The second hook part matches the hook groove. Correspondingly, a valve hook is provided on one side of the hook groove, and an initial assembly groove matching the first hook part is provided on the other side of the hook groove.

8. A fluid coupler as described in claim 1, characterized in that, The valve body is provided with a liquid flow channel, and a ball core is provided inside the liquid flow channel. A sealing ring is provided at the liquid inlet and outlet formed at the assembly end of the valve body.

9. A fluid coupler as described in claim 1, characterized in that, A locking hole is provided at a set position on the edge of the assembly end face of the valve body.

10. A method for operating the fluid coupler according to any one of claims 1-9, for docking a first fluid coupler and a second fluid coupler, characterized in that, Includes the following steps: The assembly ends of the first fluid coupler and the second fluid coupler are initially connected. The valve hook of the first fluid coupler is located on one side of the corresponding hook groove of the second fluid coupler, and the valve hook of the second fluid coupler is located on one side of the corresponding hook groove of the first fluid coupler. The first fluid coupler and the second fluid coupler rotate relative to each other until they are in position. During the relative rotation of the first fluid coupler and the second fluid coupler, the valve hook of the second fluid coupler enters the corresponding hook groove of the first fluid coupler and drives the self-locking component of the first fluid coupler to move along the self-locking pin. The second end of the self-locking component of the first fluid coupler disengages from the groove of the locking rod. The valve hook of the first fluid coupler enters the corresponding hook groove of the second fluid coupler and drives the self-locking component of the second fluid coupler to move along the self-locking pin. The second end of the self-locking component of the second fluid coupler disengages from the groove of the locking rod. Push the locking rods of the first and second fluid couplers to separate the ends of the locking rods from the slots, thereby releasing the locking state between the handles of the first and second fluid couplers and the valve body. Turn the handles to open the first and second fluid couplers. The interlocking mechanism locks and secures the first fluid coupler and the second fluid coupler. Release the locking lever, and the locking lever will return to its original position. The end of the locking lever will then engage in the slot to lock and secure the handle.

Images