Fluid coupling

Abstract

The utility model provides a fluid coupler. The fluid coupler comprises a body, a supporting part, a valve assembly, a switch piece and an interlocking mechanism. The body is provided with a butt joint platform. The supporting part is annularly arranged at the first end of the body, is adjacent to one side, back to the butt joint surface, of the butt joint platform, is provided with a first mounting surface and a second mounting surface, and is internally provided with a limiting cavity and a clamping bolt hole; and the limiting cavity axially penetrates through the second mounting surface and the butt joint surface and is communicated with the safety bolt hole. The clamping bolt hole is opened in the first mounting surface and is communicated with the limiting cavity; the valve assembly comprises a ball core which is provided with a channel and is pivoted in the body. The switch piece is arranged on the first installation face and comprises a handle and a spring bolt, the handle is provided with a pivot joint part and a limiting groove, and the ball core is driven to rotate through the upper valve body. The interlocking mechanism comprises a safety bolt, a spring and a clamping bolt. The safety plug is arranged in the limiting cavity, and the spring provides elastic force so that the safety plug can be maintained at the preset position. The clamping bolt is arranged in the clamping bolt hole and provided with a limiting part and a locking part which are matched with the limiting groove and the safety bolt ring groove respectively so as to control locking and unlocking of the handle.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of fluid couplings, in particular to a kind of fluid couplings with ball valve structure. BACKGROUND

[0002] Fluid couplings are used in fluid delivery piping systems, mainly for quickly connecting or separating two pipe sections while controlling the on-off state of fluid. In traditional technology, the design of fluid couplings usually focuses on sealing performance and operational convenience, but there are still the following technical defects and limitations in actual application. For example, during the operation of existing fluid couplings, the valve may be opened in the case of incomplete docking due to accidental or improper operation, thereby causing the risk of fluid leakage. To prevent such accidents, some fluid couplings use a manual locking mechanism, but the operation is cumbersome and is easily affected by user negligence, reducing the safety of the system. Furthermore, traditional fluid couplings ignore the problem of accidental separation when the valve is not closed. When the valve is in the open state, if the connector is accidentally separated, it is easy to cause fluid leakage or equipment damage.

[0003] Please refer to Figure 1A and Figure 1B as shown. Figure 1A is a side view schematic diagram of the existing valve coupling. Figure 1B is Figure 1A a schematic diagram of the interlocking system of the valve coupling. As shown in Figure 1A and Figure 1B , the prior art discloses a valve coupling that has mechanisms to prevent the valve from opening when not properly docked and to prevent disconnection when not closed. The mechanism to prevent the valve from opening when not properly docked mainly relies on the coordinated action of components such as gear part 11, pin 12, and roller 14. Specifically, when the valve coupling is in the undocked state, pin 12 is biased by a spring and protrudes, thereby locking roller 14, and the locked roller 14 restricts the movement of key pin 18, further preventing the valve from rotating from the closed position to the open position. Gear part 11 is arranged between handle 6 and pin 12, responsible for converting the rotational motion of handle 6 into linear motion of pin 12. In addition, the mechanism to prevent the valve from being disconnected when not closed also relies on the structural cooperation of gear part 11, pin 12, and roller 14 to achieve, through the coordinated action of multiple components, to ensure the safety of the valve coupling during operation. When the valve is in the open state, pin 12 is pushed to the extended position by the actuator, and pin 12 is inserted into the hole of the complementary valve coupling, thereby mechanically locking the two valve couplings to prevent relative rotation or separation. To achieve the separation of the valve coupling, the valve coupling must be rotated first, and only after the valve is completely closed, pin 12 will retract into the hole, unlocking and allowing the valve coupling to separate.

[0004] However, the valve coupling structure is complex and bulky, and in addition, since the valve is arranged away from the interface, water overflow is prone to occur when the coupling is separated, affecting the operation convenience and system cleanliness.

[0005] Therefore, how to solve the above problems and shortcomings is an urgent research direction. Utility model content

[0006] The utility model discloses a fluid coupling, which has multiple anti-misoperation mechanisms. When the fluid coupling is not docked, the rear end of the main body of the safety bolt is kept in a predetermined position of the locking part of the latch by the elastic force of the spring and the limiting action of the limiting cavity, so that the limiting part of the latch and the limiting slot of the handle bottom are mutually engaged, the switch piece is locked, and the valve is prevented from being accidentally opened when not correctly docked. When the fluid coupling is docked with another fluid coupling, the conical part of the safety bolt is aligned with and inserted into the positioning hole of the other fluid coupling, and the safety bolt moves to an unlocking position due to pressure. In the unlocking position, the locking part of the latch falls into the ring groove of the safety bolt due to suspension, and the limiting part of the latch is separated from the limiting slot of the handle, so that the locking of the switch piece is released. In addition, when the switch piece is rotated to the open position after the fluid coupling is docked with the other fluid coupling, one end of the lock tongue of the fluid coupling passes through the lock tongue slot on the docking platform and is inserted into the lock tongue container slot on the docking platform of the other fluid coupling, so as to be mutually engaged with the other fluid coupling. Through the above mechanism, the valve can be prevented from being opened before the two fluid couplings are docked, and the two fluid couplings can be prevented from being separated when the valve is not closed after the two fluid couplings are docked.

[0007] The utility model provides a fluid coupling, which is characterized by comprising:

[0008] A body has a first end and a second end, a fluid passage is through between the first end and the second end, the first end of the body is provided with a docking platform, the docking platform has a docking surface, the docking surface is provided with an opening communicated with the fluid passage and at least one interlocking buckle and at least one buckle slot staggered arranged around the opening, the periphery of the at least one interlocking buckle and the at least one buckle slot is provided with a safety bolt hole and a positioning hole, the safety bolt hole and the positioning hole are further provided with a lock tongue slot and a lock tongue container slot, the lock tongue slot and the lock tongue container slot are adjacent arrangement;

[0009] A support portion is arranged around the first end of the body and is adjacent to the side of the docking platform facing away from the docking surface. The support portion has a first mounting surface and a second mounting surface. The first mounting surface is adjacent to the side of the docking platform facing away from the docking surface and is perpendicular to the docking surface of the docking platform. The second mounting surface is located on the side of the support portion facing away from the docking platform and is perpendicular to the first mounting surface. A limiting cavity and a latch hole are arranged in the support portion. The limiting cavity extends axially between the second mounting surface and the docking surface and is in communication with the safety latch hole. The latch hole is open on the first mounting surface and extends in a direction perpendicular to the first mounting surface and is in communication with the limiting cavity.

[0010] A valve assembly includes a ball core, an upper valve body, and a lower valve rod. The ball core is pivotally arranged in the internal space of the body through one end of the upper valve body and the lower valve rod. The ball core is provided with a passage and can be rotated by the upper valve body.

[0011] A switch member is arranged on the first mounting surface of the support portion and includes a handle and a locking tongue. The handle is provided with a pivot portion, and the locking tongue is connected to the handle through the pivot portion. The pivot portion is provided with an axial hole. The bottom surface of the handle is provided with a limiting groove. The other end of the upper valve body is fixedly arranged in the axial hole, so that the ball core can be connected with the rotation of the switch member.

[0012] An interlocking mechanism includes a safety latch, a spring, and a latch. The safety latch includes a main body portion, a front end column, and a conical portion. The outer periphery of the main body portion is provided with a safety latch ring groove. The main body portion is arranged in the limiting cavity. The front end column extends from the main body portion and is inserted into the safety latch hole. The outer diameter of the main body portion matches the inner diameter of the limiting cavity. The outer diameter of the front end column is smaller than the outer diameter of the main body portion and matches the inner diameter of the safety latch hole. The conical portion is located at the front end of the safety latch and can protrude outwardly from the docking surface of the docking platform. The spring is arranged in the limiting cavity and abuts against the bottom wall of the limiting cavity at one end and abuts against the rear end of the safety latch at the other end. The latch is movably arranged in the latch hole in a direction perpendicular to the axial line of the limiting cavity. The latch includes a limiting portion and a locking portion. The limiting portion is arranged at one end of the latch and has an outer shape matching the limiting groove of the handle. The locking portion is arranged at the other end of the latch and has an outer shape matching the safety latch ring groove.

[0013] The fluid coupling further includes a pipe connected to the second end of the body and having a pipe passage in communication with the fluid passage.

[0014] The fluid coupler, wherein the interlocking catch comprises a handle protruding from the docking platform and a docking portion connected to and perpendicular to the handle, the catch slot comprises a docking section having an opening matching the shape of the docking portion and a catch section having an opening retracted compared to the opening of the docking section, and when the docking portion slides into the catch section, the opening of the catch section can restrict axial separation of the docking portion.

[0015] The fluid coupler, wherein the docking platform is provided with a pair of interlocking catches of different sizes and a pair of catch slots of different sizes, each interlocking catch is matched in size with the docking section of its corresponding catch slot.

[0016] The fluid coupler, wherein the depth of the positioning hole matches the length of the tapered portion of the safety pin.

[0017] The fluid coupler, wherein the second mounting surface of the support portion is further provided with a ball groove, the handle is further provided with a transversely extending button hole and a ball through hole on the lower side of the handle and communicating with the button hole, the ball through hole is positioned corresponding to the ball groove.

[0018] The fluid coupler, wherein the button hole is provided with a button member laterally limited and capable of limited axial displacement, the button member comprises a pressing portion protruding from the button hole and a pressing core portion arranged in the button hole, and the outer periphery of the pressing core portion is concavely provided with a button ring groove.

[0019] The fluid coupler, wherein when the fluid coupler is in a non-docking state, the safety pin is kept at a predetermined position, at which the front end of the main body portion of the safety pin is abutted against the wall surface of the safety pin hole in the limiting cavity under the action of the spring, and the rear end of the main body portion of the safety pin abuts against the locking portion of the latch, so that the limiting portion of the latch is engaged in the limiting groove of the handle to lock the switch member.

[0020] The fluid coupler, wherein when the fluid coupler is docked and positioned with another fluid coupler, the tapered portion of the safety pin is aligned and embedded in the positioning hole on the docking platform of another fluid coupler to reach an unlocking position, at which the safety pin is moved towards the direction of compressing the spring, so that the locking portion of the latch is suspended and falls into the safety pin ring groove.

[0021] The fluid coupler, wherein after the fluid coupler is docked and positioned with another fluid coupler, when the switch member is rotated in a direction to rotate the ball core, the lock tongue passes through the lock tongue through groove in the opposite direction and is inserted into the lock tongue containing groove of another fluid coupler, so that the fluid coupler and another fluid coupler are engaged with each other.

[0022] The utility model discloses by above technical scheme, utilize the interlocking buckle and buckle slot of a pair of different sizes that set up on the docking platform, ensure that fluid coupling and another fluid coupling can only realize docking in the correct docking direction, thereby reach the function of preventing stupid. And, by the synergistic effect of safety bolt, spring and padlock in interlocking mechanism, only when fluid coupling and another fluid coupling complete docking positioning, safety bolt is pressed and moves to the unlocking position of making the locking portion of padlock hang and fall into safety bolt ring groove, can release the locking of switch piece, thereby effectively prevent fluid coupling from being opened accidentally before completing docking positioning. Furthermore, handle setting button piece can be as second protection mechanism of handle. When button piece is not triggered, handle can not rotate freely, thereby avoiding valve from being opened or closed accidentally due to external force or mistaken touch. In addition, when fluid coupling and another fluid coupling dock, when switch piece rotates to an opening position to open valve, one end of lock tongue will pass through lock tongue slot and insert into lock tongue containing groove of another fluid coupling, realize mutual clamping. By this, prevent the disconnection of coupling under the condition that valve is not closed after two fluid couplings complete docking positioning, thereby improve operation safety and system stability.

[0023] The above description of the utility model and the following description of the embodiments are used to demonstrate and explain the principle of the utility model, and provide further explanation of the scope of the claims of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1A It is a side view schematic diagram of prior valve coupling.

[0025] Figure 1B It is a schematic diagram of interlocking system of valve coupling of Figure 1A .

[0026] Figure 2A It is a three-dimensional schematic diagram of fluid coupling of the utility model embodiment.

[0027] Figure 2B It is a three-dimensional schematic diagram of fluid coupling and pipe shown in Figure 2A .

[0028] Figure 3 It is an exploded schematic diagram of main components of fluid coupling of the utility model embodiment.

[0029] Figure 4 It is a cross-sectional schematic diagram of fluid coupling of the utility model embodiment and another fluid coupling in undocking state.

[0030] Figure 5 It is a top view of docking platform structure of fluid coupling of the utility model embodiment.

[0031] Figure 6 This is a schematic diagram showing the fluid connector in an unconnected state and the safety bolt in a preset position according to an embodiment of the present invention.

[0032] Figure 7 This is a cross-sectional schematic diagram of a fluid connector and another fluid connector in a docking and positioning state according to an embodiment of the present invention.

[0033] Figure 8 This is a schematic diagram showing the safety bolt in the unlocked position after the fluid connector of this utility model has completed docking and positioning.

[0034] Figure 9 for Figure 7 The diagram shows a cross-sectional view of the fluid connector along section aa.

[0035] Explanation of reference numerals in the attached drawings: 1, 1A, 1B - fluid connector; 10 - body; 100 - fluid channel; 101 - first end; 102 - second end; 103 - docking platform; 103S - docking surface; 1030 - opening; 1031 - interlocking buckle; 1031a - handle; 1031b - docking part; 1032 - buckle groove; 1032a - docking section; 1032b - locking section; 1033 - locking tongue through groove; 1034 - locking tongue receiving groove; 1035 - safety bolt hole; 1036 - positioning hole; 1037 - external lock through hole; 20 - support part; 201 - limiting cavity; 202 - bolt hole; 203 - ball groove; 30 - pipe fitting; 301 - pipe channel; 40 - valve assembly; 401 - ball core ; 401P - Channel; 402 - Upper valve body; 403 - Lower valve stem; 50 - Switch; 501 - Handle; 502 - Locking tongue; 503 - Pivot; 5030 - Shaft hole; 501G - Limiting groove; 5010 - Button hole; 5011 - Ball bearing through hole; 5012 - Button; 5013 - Pressing part; 5014 - Pressing core; 5015 - Button ring groove; 5016 - Ball bearing; 60 - Interlocking mechanism; 601 - Safety bolt; 602 - Spring; 603 - Locking bolt; 6011 - Main body; 6011G - Safety bolt ring groove; 6012 - Front column; 6013 - Conical part; 6031 - Limiting part; 6032 - Locking part; P1 - First mounting surface; P2 - Second mounting surface. Detailed Implementation

[0036] Please see Figure 2A , Figure 2B and Figure 3 As shown. This utility model embodiment provides a fluid connector 1, which can be used to quickly connect or disconnect two pipeline sections, while controlling the on / off state of the fluid. The fluid connector 1 includes a body 10, a support part 20, a valve assembly 40, a switch 50, and an interlocking mechanism 60.

[0037] The body 10 has a first end 101 and a second end 102, and a fluid passage 100 is formed through the body 10 between the first end 101 and the second end 102 for conducting and transmitting fluid. The first end 101 of the body 10 is provided with a docking platform 103 for docking with another fluid coupler to achieve communication of the fluid passages 100 of the two fluid couplers. The docking platform 103 is provided with a docking surface 103S which is a structural plane for docking of the fluid couplers.

[0038] The fluid coupler 1 can further include a pipe 30. The pipe 30 is connected to the second end 102 of the body 10 and has a pipe passage 301. The pipe passage 301 is in communication with the fluid passage 100 of the body 10. Specifically, the body 10 can be connected to the pipe 30 by means of the threaded structure (not shown in the figure) of the second end 102 of the body 10 and the threaded structure of the pipe 30, so as to achieve communication of the fluid passage 100 of the body 10 and the pipe passage 301 of the pipe 30.

[0039] Continuing to refer to Figure 4 , Figure 5 , Figure 8 shown. The docking surface 103S of the docking platform 103 is provided with an opening 1030 in communication with the fluid passage 100 and at least one pair of interlocking buckles 1031 and at least one pair of buckle grooves 1032 arranged in a circumferential staggered manner around the opening 1030. The interlocking buckles 1031 and the buckle grooves 1032 form an interlocking structure when docking, so that the fluid coupler can be stably clamped during docking, preventing misalignment or loosening of the docking, and ensuring sealing and stability.

[0040] The interlocking buckle 1031 includes a handle portion 1031a extending axially and beyond the docking platform 103, and a docking portion 1031b connected to the handle portion 1031a and arranged perpendicularly to the handle portion 1031a.

[0041] The buckle groove 1032 has a docking section 1032a and a clamping section 1032b. The docking section 1032a is provided with an opening matching the shape of the docking portion 1031b, for guiding the docking portion 1031b into the buckle groove 1032. The opening of the clamping section 1032b is recessed compared to the opening of the docking section 1032a, forming a restricted area. When the docking portion 1031b (not shown in the figure) of another fluid coupler enters the docking section 1032a and rotates and slides to the clamping section 1032b, the recessed opening of the clamping section 1032b can effectively restrict the movement of the docking portion 1031b in the axial direction, ensuring that the two fluid couplers are in a stable docking state and preventing axial disengagement.

[0042] Specifically, the docking platform 103 is provided with one pair of interlocking buckles 1031 of different sizes and one pair of buckle grooves 1032 of different sizes. As shown inFigure 5 As shown, the interlocking buckle 1031 on the left side is larger than the interlocking buckle 1031 on the right side, while the buckle slot 1032 on the upper side is smaller than the buckle slot 1032 on the lower side. In addition, the size of each interlocking buckle 1031 matches the size of the abutting section 1032a of the corresponding buckle slot 1032. Through the above design, it is ensured that the fluid coupler can only be docked in the correct docking direction with another fluid coupler, effectively achieving the fool-proof function and avoiding incorrect assembly or unstable connection.

[0043] The periphery of the interlocking buckle 1031 and the buckle slot 1032 is provided with a safety pin hole 1035 and a positioning hole 1036. The safety pin hole 1035 is used to accommodate the front end column 6012 of the safety pin 601. The positioning hole 1036 is used to align and cooperate with the conical part 6013 of the safety pin 601 on the docking platform of another fluid coupler, ensuring accurate positioning during docking.

[0044] A lock tongue slot 1033 and a lock tongue accommodating slot 1034 are also provided between the safety pin hole 1035 and the positioning hole 1036. The lock tongue slot 1033 and the lock tongue accommodating slot 1034 are arranged adjacent to each other, used to cooperate with the lock tongue structure in another fluid coupler, to achieve the locking function during docking, further improving the stability and safety of the fluid coupler.

[0045] The docking platform 103 can also be additionally provided with an outer lock through hole 1037. When the fluid coupler is docked with another fluid coupler, the outer lock through holes 1037 of the two fluid couplers can overlap with each other, thereby allowing an additional lock to be simultaneously inserted and fixed in the outer lock through holes 1037 of the two fluid couplers, to further enhance the stability of the docking.

[0046] Please refer to Figure 2A , Figure 2B As shown, the support part 20 is arranged around the first end 101 of the body 10 and is adjacent to the side of the docking platform 103 away from the docking surface 103S, to strengthen the structural stability of the connection between the docking platform 103 and the body 10. The support part 20 has a first mounting surface P1 and a second mounting surface P2, wherein the first mounting surface P1 is adjacent to the side of the docking platform 103 away from the docking surface 103S and is perpendicular to the docking surface 103S of the docking platform 103; the second mounting surface P2 is located on the side of the support part 20 away from the docking platform 103 and is perpendicular to the first mounting surface P1.

[0047] Please refer to Figure 3 , Figure 6The support portion 20 is provided with a limiting cavity 201 and a clamping hole 202. The limiting cavity 201 extends axially between the second mounting surface P2 and the abutting surface 103S and is in communication with the safety bolt hole 1035. The clamping hole 202 is open at the first mounting surface P1 and extends in a direction perpendicular to the first mounting surface P1 and is in communication with the limiting cavity 201.

[0048] Please refer to Figure 4 As shown in the figure, the valve assembly 40 includes a ball core 401, an upper valve body 402 and a lower valve stem 403. The ball core 401 is pivotally arranged in the internal space of the body 10 through one end of the upper valve body 402 and the lower valve stem 403. The ball core 401 is provided with a passage 401P and can be rotated to a communication state or a blocking state by the upper valve body 402. When the ball core 401 is rotated to the communication state, the passage 401P is aligned with the fluid channel 100 to communicate (not shown in the figure), allowing the fluid to pass through; when the ball core 401 is rotated to the blocking state, the passage 401P deviates from the position of the fluid channel 100, blocking the fluid. In addition, the ball core 401 is arranged in close contact with the inner surface of the abutting platform 103 through the configuration of each component. The space between the two valves after the two fluid couplers are docked is effectively reduced, thereby greatly reducing the amount of residual liquid between the couplers when the two fluid couplers are separated, improving the cleanliness of the system and improving the operation efficiency.

[0049] One end of the upper valve body 402 is arranged in the shaft hole of the ball core 401, and the other end of the upper valve body 402 is fixedly arranged in the shaft hole 5030 on the switch piece 50, so that the ball core 401 can be synchronously rotated with the switch piece 50.

[0050] Please refer to Figure 2A , Figure 3 , Figure 4 As shown in the figure, the switch piece 50 is arranged on the first mounting surface P1 of the support portion 20.

[0051] The switch piece 50 includes a handle 501 and a lock tongue 502. The lock tongue 502 is arranged at the opposite end of the handle 501, and the handle 501 is provided with a pivot portion 503 which is provided with a shaft hole 5030. The lock tongue 502 is connected with the handle 501 through the pivot portion 503, and when the handle 501 is rotated in a direction to rotate the ball core 401 so that the passage 401P of the ball core 401 is in communication with the fluid channel 100, the lock tongue 502 will be deflected in the opposite direction.

[0052] Please refer to Figure 7 , Figure 9As shown in the figure. In this embodiment, the first mounting surface P1 of the support part is provided with a ball groove 203. The handle 501 is provided with a transversely extending button hole 5010, and a ball through hole 5011 which is in communication with the button hole 5010 and is located on the lower side of the handle 501, and the ball through hole 5011 is arranged corresponding to the ball groove 203. A button piece 5012 is arranged in the button hole 5010, which is transversely limited and can be limitedly axially displaced. The button piece 5012 includes a pressing part 5013 extending out of the button hole 5010 and a pressing core part 5014 located in the button hole 5010, and the pressing core part 5014 is circumferentially recessed with a button ring groove 5015. A ball 5016 is arranged in the ball through hole 5011, and the depth of the ball through hole 5011 is less than the diameter of the ball 5016, so that the ball 5016 partially protrudes from the lower side of the handle 501 and is embedded in the ball groove 203, forming a stable cooperation. In this embodiment, when the pressing part 5013 is pressed by external force, the button piece 5012 moves along the axial direction, so that the button ring groove 5015 is aligned with the ball through hole 5011, allowing the ball 5016 to retreat upward into the interior of the handle 501, thereby releasing the engagement between the ball 5016 and the ball groove 203, achieving the purpose of unlocking.

[0053] The utility model embodiment is by setting button piece on handle, when button piece is not pressed, handle is in locked state, can not rotate freely, effective prevent because external force action or accidental touch operation leads to valve accidental opening or closing, further improve the safety and reliability of operation.

[0054] Please refer to Figure 6 As shown in the figure. The interlocking mechanism 60 includes a safety bolt 601, a spring 602 and a clamping bolt 603.

[0055] The safety bolt 601 includes a main body part 6011, a front end column body 6012 and a cone body part 6013. The outer periphery of the main body part 6011 is provided with a safety bolt ring groove 6011G. The main body part 6011 is arranged in the limiting cavity 201, the front end column body 6012 is extended from the main body part 6011 and can be inserted into the safety bolt hole 1035. The outer diameter of the main body part 6011 matches the inner diameter of the limiting cavity 201, and the outer diameter of the front end column body 6012 is smaller than the outer diameter of the main body part 6011 and matches the inner diameter of the safety bolt hole 1035. The cone body part 6013 is located at the front end of the safety bolt 601 and can protrude to the outside of the butt joint surface of the butt joint platform 103. In this embodiment, the inner diameter of the safety bolt hole 1035 is smaller than the inner diameter of the limiting cavity 201, the front end column body 6012 of the safety bolt 601 matches the safety bolt hole 1035, and the main body part 6011 matches the limiting cavity 201, to ensure that the main body part 6011 of the safety bolt 601 is stably clamped in the limiting cavity 201 to limit the safety bolt 601 from being axially removed.

[0056] The spring 602 is accommodated in the limiting cavity 201, one end of the spring 602 abuts against the bottom wall of the limiting cavity 201, and the other end of the spring 602 abuts against the rear end of the safety bolt 601.

[0057] The clamping bolt 603 is movably accommodated in the clamping bolt hole 202 in a direction perpendicular to the axis of the limiting cavity 201. The clamping bolt 603 comprises a limiting portion 6031 and a locking portion 6032. The limiting portion 6031 is located at one end of the clamping bolt 603 and has an outer shape matched with the limiting groove 501G of the handle 501, so that the limiting portion 6031 can be clamped in the limiting groove 501G and limit the rotation of the handle 501. The locking portion 6032 is arranged at the other end of the clamping bolt 603 and has an outer shape matched with the safety bolt ring groove 6011G, so that the locking portion 6032 can be embedded in or separated from the safety bolt ring groove 6011G when the safety bolt 601 moves to a specific position.

[0058] When the fluid coupler 1A is in the non-docking state with another fluid coupler 1B, the safety bolt 601 is kept in a predetermined position, in which the front end of the main body portion 6011 of the safety bolt 601 abuts against the wall surface of the limiting cavity 201 adjacent to the safety bolt hole 1035 under the elastic force of the spring 602, and the rear end of the main body portion 6011 of the safety bolt 601 abuts against the locking portion 6032 of the clamping bolt 603, so that the limiting portion 6031 of the clamping bolt 603 is clamped in the limiting groove 501G of the handle 501 to lock the switch member.

[0059] As shown in Figure 6 , the locking portion 6032 of the clamping bolt 603 is clamped at the position on the left side of the safety bolt ring groove 6011G. However, the present application is not limited thereto, and the locking portion 6032 of the clamping bolt 603 can also be clamped at other positions of the main body portion 6011 of the safety bolt 601, for example, the position on the right side of the safety bolt ring groove 6011G. The specific configuration can be adjusted according to the actual application requirements, which depends on the length of the safety bolt 601 and the arrangement position of the safety bolt ring groove 6011G, and so on, to adapt to different structural requirements.

[0060] As shown in Figure 5 , Figure 8 When the interlocking buckles 1031 on the docking platforms 103 of the fluid couplers 1A and 1B are respectively clamped in the docking segments 1032a of the corresponding buckle grooves 1032, and the two fluid couplers are respectively rotated to a predetermined angle (for example, each fluid coupler is counterclockwise rotated by 90 degrees) in opposite directions to complete the docking positioning, the taper portion 6013 of the safety bolt 601 of one fluid coupler 1A will be aligned with and clamped in the positioning hole 1036 on the docking platform 103 of the other fluid coupler 1B, so as to reach the unlocking position.

[0061] In the unlocking position, the safety latch 601 moves further towards the compression spring 602 compared to the preset position, causing the locking portion 6032 of the latch 603 to fall into the safety latch ring groove 6011G and causing the limiting portion 6031 of the latch 603 to disengage from the limiting groove 501G of the handle 501, thereby releasing the locking state of the handle 501.

[0062] As shown in Figure 8 the safety latch 601 moves towards the compression spring 602 after being pressed by the abutting face 103S of the abutting platform 103 of the other fluid coupler 1B, and the position of the safety latch 601 precisely reaches the unlocking position when abutting positioning is completed. It should be particularly noted that in the present embodiment, the depth of the positioning hole 1036 matches the length of the tapered portion 6013 of the safety latch 601, and only the tapered portion 6013 can be accommodated. Therefore, during abutting, the tapered portion 6013 of the safety latch 601 of one fluid coupler is first pushed into the limiting cavity 201 of the fluid coupler by the abutting platform of the other fluid coupler, and when abutting positioning is completed, the tapered portion 6013 of the safety latch 601 of the fluid coupler is aligned with the positioning hole 1036 on the abutting platform of the other fluid coupler 1B and slightly pops out from the limiting cavity 201 under the pushing force of the spring 602 and is embedded in the positioning hole 1036 on the abutting platform of the other fluid coupler 1B. At this time, the safety latch 601 precisely reaches the unlocking position, so that the locking portion 6032 of the latch 603 smoothly falls into the safety latch ring groove 6011G, and the limiting portion 6031 of the latch 603 disengages from the limiting groove 501G, achieving the release of the locking of the handle 501.

[0063] Referring back to Figure 7 In continuation of the previous embodiment, when the fluid coupler 1A and the other fluid coupler 1B complete abutting positioning and the handles 501 of the two fluid couplers are rotated in one direction to connect the two fluid passages 100, the fluid passages 100 of the two fluid couplers are connected, and the locking tongues 502 of the fluid couplers pass through the locking tongue through slots 1033 on the abutting platforms 103 of the other fluid couplers in opposite directions and are inserted into the locking tongue accommodating grooves 1034 of the other fluid couplers, thereby achieving the mutual engagement of the two fluid couplers. This design effectively prevents disengagement operation in the case where abutting positioning is completed and the valve is not closed, thereby improving the safety and stability of the operation.

[0064] The utility model discloses a pair of interlocking buckles and buckle grooves of different sizes are arranged on the docking platform, ensuring that the fluid coupler and another fluid coupler can only be docked in the correct docking direction, realizing the fool-proof function. At the same time, the safety bolt, spring, latch and limiting cavity in the interlocking mechanism work together, only when the fluid coupler is docked and positioned, the safety bolt moves under pressure and makes the locking part of the latch hang and fall into the safety bolt ring groove, the locking of the switch piece can be released, preventing the valve from being accidentally opened before docking is completed. In addition, the button piece arranged on the handle serves as a second safety protection mechanism, when the button piece is not pressed, the handle is in a locked state and cannot be rotated, avoiding external force or accidental touch from causing the valve to be accidentally opened or closed. In addition, when the two fluid couplers are docked and the valve is opened, the lock tongue will pass through the lock tongue slot on the docking platform and insert into the lock tongue containing groove of another fluid coupler to realize mutual clamping, preventing disconnection operation under the condition that the valve is not closed, further improving the operation safety and system stability. The interlocking mechanism mainly consists of a safety bolt, a spring and a latch, simplifying the design, without the need of using gear components, which helps to reduce the size of the components. In addition, by optimizing the configuration of each component, the ball core can tightly adhere to the inner surface of the docking platform, effectively reducing the water overflow amount when the fluid coupler is separated, improving the cleanliness and efficiency of the system.

[0065] The above has made a detailed description of the utility model, and the above is only a preferred embodiment of the utility model, which should not limit the scope of the utility model. That is, any equivalent changes and modifications made according to the utility model should still belong to the patent coverage of the utility model.

Claims

1. A fluid coupling, comprising: The utility model relates to a valve assembly, which comprises a body, a support part, a valve assembly, a switch part and an interlocking mechanism. The body has a first end and a second end, and a fluid passage is formed between the first end and the second end. The first end of the body is provided with a docking platform, and the docking platform has a docking surface. The docking surface is provided with an opening connected with the fluid passage and at least one interlocking buckle and at least one buckle slot arranged around the opening in a circumferential staggered manner. The outer periphery of the at least one interlocking buckle and the at least one buckle slot is provided with a safety bolt hole and a positioning hole. The safety bolt hole and the positioning hole are further provided with a lock tongue through slot and a lock tongue containing slot arranged adjacently.

2. The fluid coupling of claim 1, wherein: The support part is arranged around the first end of the body and is adjacent to the side of the docking platform away from the docking surface. The support part has a first mounting surface and a second mounting surface. The first mounting surface is adjacent to the side of the docking platform away from the docking surface and is perpendicular to the docking surface of the docking platform. The second mounting surface is located on the side of the support part away from the docking platform and is perpendicular to the first mounting surface. The support part is provided with a limiting cavity and a clamping bolt hole. The limiting cavity is axially formed between the second mounting surface and the docking surface and is connected with the safety bolt hole. The clamping bolt hole is open to the first mounting surface and extends in a direction perpendicular to the first mounting surface and is connected with the limiting cavity. The valve assembly comprises a ball core, an upper valve body and a lower valve rod. The ball core is pivotally arranged in the internal space of the body through one end of the upper valve body and the lower valve rod. The ball core is provided with a passage and can be rotated by the upper valve body. The switch part is arranged on the first mounting surface of the support part and comprises a handle and a lock tongue. The handle is provided with a pivot part, and the lock tongue is connected with the handle through the pivot part. The pivot part is provided with an axle hole. The bottom surface of the handle is provided with a limiting slot. The other end of the upper valve body is fixedly arranged in the axle hole, so that the ball core can be connected with the rotation of the switch part. The interlocking mechanism comprises a safety bolt, a spring and a clamping bolt. The safety bolt comprises a main body part, a front end column and a conical part. The outer periphery of the main body part is provided with a safety bolt ring slot. The main body part is accommodated in the limiting cavity. The front end column is extended from the main body part and is inserted into the safety bolt hole. The outer diameter of the main body part is matched with the inner diameter of the limiting cavity. The outer diameter of the front end column is smaller than the outer diameter of the main body part and is matched with the inner diameter of the safety bolt hole. The conical part is located at the front end of the safety bolt and can protrude to the outside of the docking surface of the docking platform. The spring is accommodated in the limiting cavity. One end of the spring abuts against the bottom wall of the limiting cavity, and the other end of the spring abuts against the rear end of the safety bolt. The clamping bolt is movably accommodated in the clamping bolt hole in a direction perpendicular to the axis of the limiting cavity. The clamping bolt comprises a limiting part and a locking part. The limiting part is arranged at one end of the clamping bolt and has an outer shape matched with the limiting slot of the handle. The locking part is arranged at the other end of the clamping bolt and has an outer shape matched with the safety bolt ring slot. The pipe is connected with the second end of the body and has a pipe passage connected with the fluid passage.

3. The fluid coupling of claim 1, wherein: The interlocking buckle includes a handle protruding from the docking platform and a docking portion connected with the handle and arranged perpendicularly to the handle, and the buckle slot includes a docking segment and a clamping segment, the docking segment has an opening matching the shape of the docking portion, and the opening of the clamping segment is recessed compared with the opening of the docking segment, and when the docking portion slides into the clamping segment, the opening of the clamping segment can limit the axial separation of the docking portion.

4. The fluid coupling of claim 1, wherein: The docking platform is provided with a pair of interlocking buckles of different sizes and a pair of buckle slots of different sizes, and the size of each interlocking buckle matches the size of the docking segment of the corresponding buckle slot.

5. The fluid coupling of claim 1, wherein: The depth of the positioning hole matches the length of the tapered portion of the safety bolt.

6. The fluid coupling of claim 1, wherein: The second mounting surface of the support portion is further provided with a ball groove, the handle is further provided with a transversely-through button hole, and a ball through hole is arranged on the lower side of the handle and communicates with the button hole, and the position of the ball through hole corresponds to the ball groove.

7. The fluid coupling of claim 6, wherein: A button piece limited transversely and capable of limited axial displacement is arranged in the button hole, and the button piece includes a pressing portion extending out of the button hole and a pressing core portion arranged in the button hole, and a button ring groove is arranged on the outer periphery of the pressing core portion.

8. The fluid coupling of claim 1, wherein, When the fluid connector is in the undocking state, the safety bolt is kept in a predetermined position, in which the front end of the main body portion of the safety bolt abuts against the wall surface of the limiting cavity adjacent to the safety bolt hole under the action of the spring, and the rear end of the main body portion of the safety bolt abuts against the locking portion of the clamping bolt, so that the limiting portion of the clamping bolt is clamped in the limiting groove of the handle to lock the switch piece.

9. The fluid coupling of claim 8, wherein, When the fluid connector is docked with another fluid connector, the tapered portion of the safety bolt is aligned with and inserted into the positioning hole on the docking platform of another fluid connector to reach an unlocking position, in which the safety bolt moves towards the direction of compressing the spring, so that the locking portion of the clamping bolt is suspended and falls into the safety bolt ring groove.

10. The fluid coupling of claim 9, wherein, After the fluid connector is docked with another fluid connector, when the switch piece is rotated in a direction to rotate the ball core, the lock tongue passes through the lock tongue through groove in the opposite direction and is inserted into the lock tongue containing groove of another fluid connector, so that the fluid connector and another fluid connector are clamped with each other.

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