Leak-free fluid coupler

Abstract

The utility model relates to the technical field of valve body structures, and provides a leakage-free fluid coupler, a first valve body comprises a mother valve, an adapter bridge, a fixed valve core, a second elastic piece and an annular switch, and the tail part of the fixed valve core is fixedly arranged in the mother valve; one end of the adapter bridge is provided with an inserting groove for sealing and inserting, and the other end of the adapter bridge is provided with a limiting groove for limiting the second elastic piece; the female valve is provided with at least one locking piece penetrating through the valve wall, and the annular switch is provided with a protruding ring abutting against the locking piece to conduct locking action. The male head and the female head are connected and fixed through the annular switch, compared with a traditional button type connection mode, the position of the button does not need to be accurately aligned in the connection process, the button does not need to be found in the unlocking process, connection and unlocking of the male head and the female head can be achieved only by pushing the annular switch, use is faster and more convenient, and use is more convenient. And the practicability is good.

Description

Technical Field

[0001] This utility model relates to the field of valve body structure technology, specifically to a leak-free fluid coupling. Background Technology

[0002] A leak-free fluid coupler is a component used for fluid transfer, primarily for connecting different pipes, pipelines, or other fluid transfer equipment to ensure uninterrupted fluid flow while maintaining the sealing and stability of the connection.

[0003] In existing technologies, leak-free fluid couplers typically include a male and a female connector, which are connected or disconnected via a push-button connection structure to achieve pipeline connection. However, in some complex or confined equipment spaces, users may find it difficult to directly observe or touch the button, potentially requiring adjustments to posture or the use of tools, or repositioning the button during connection. Push-button leak-free fluid couplers often require precise alignment during connection; for example, the button needs to be aligned with a slot to achieve a snap-fit ​​connection, increasing the complexity and time consumption of the operation. Utility Model Content

[0004] The purpose of this invention is to provide a leak-free fluid coupler, aiming to improve the problem of the inconvenience of using existing leak-free fluid couplers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a leak-free fluid coupler, including a first valve body;

[0006] The first valve body includes a main valve with both ends through it, a transition bridge that is slidably disposed in the main valve and sealed against the inner wall of the main valve, a fixed valve core whose head is fitted with the inner hole of the transition bridge to form a second sealing part or separated to form a second fluid gap, a second elastic element disposed between the connection end of the transition bridge and the main valve, and an annular switch that is slidably sleeved on the outside of the main valve. The tail of the fixed valve core is fixedly disposed in the main valve.

[0007] One end of the adapter bridge is provided with a plug groove for sealing and insertion, and the other end of the adapter bridge is provided with a limiting groove for limiting the second elastic element.

[0008] The main valve is provided with at least one locking fastener that penetrates the valve wall, and the annular switch is provided with a protruding ring that abuts against the locking fastener to perform a locking action.

[0009] Preferably, it further includes a second valve body; the second valve body includes a male valve with both ends through it, a movable valve core that is fitted to the insertion end of the male valve to form a first sealing part or separated from it to form a first fluid gap, and a first elastic member disposed between the movable valve core and the connection end of the male valve, wherein a locking groove is provided on the outer side wall of the male valve to engage and lock with the locking fastener.

[0010] Preferably, a sliding groove for sliding the annular switch is provided on the outer surface of the mother valve, and a third elastic element is provided between the convex ring and the side wall of the sliding groove away from the insertion end of the mother valve; a sliding inclined surface is provided on the side of the convex ring facing the insertion end of the mother valve.

[0011] Preferably, the movable valve core is provided with at least one first fluid channel in the middle, the first fluid channel is provided through one end of the fixed valve core, and the valve head at the other end of the movable valve core is fitted with the side wall of the plug end of the male valve to form a first sealing part, or the valve head at the other end of the movable valve core is separated from the plug end of the male valve to form a first fluid gap.

[0012] The fixed valve core is provided with at least one second fluid channel in the middle. The second fluid channel is provided through one end of the fixed valve core. The valve head at the other end of the fixed valve core is fitted with the inner hole of the transition bridge to form a second sealing part, or the valve head at the other end of the fixed valve core is separated from the inner hole of the transition bridge to form a second fluid gap.

[0013] Preferably, a first guide surface is provided on the connection surface between the first fluid channel and the valve head of the movable valve core.

[0014] Preferably, a second guide surface is provided on the connection surface between the second fluid channel and the valve head of the fixed valve core.

[0015] Preferably, one end of the fixed valve core is disposed in the valve port of the connection end of the mother valve and forms a third fluid gap.

[0016] Preferably, the valve head of the fixed valve core is provided with a first sealing ring that seals with the inner hole of the adapter bridge; the valve head of the movable valve core is provided with a second sealing ring that seals with the insertion end of the male valve.

[0017] The outer surface of the adapter bridge is provided with a third sealing ring that seals with the female valve; the outer surface of the plug end of the male valve is provided with a fourth sealing ring that seals with the plug groove.

[0018] Preferably, the locking device is a spherical structure, and the mother valve is provided with a plurality of through holes arranged in a circumferential array to accommodate the spherical structure.

[0019] Preferably, the second valve body and / or the first valve body are provided with an identification ring.

[0020] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0021] 1. In this utility model, the male and female connectors are connected and fixed by a ring switch. Compared with the traditional button connection method, this utility model does not require precise alignment of the button when connecting, nor does it require finding the button when unlocking. Simply push the ring switch to connect and unlock the male and female connectors, making it faster and more convenient to use and with good practicality.

[0022] 2. In this utility model, by setting a first guide surface and a second guide surface, the fluid medium is guided. The possibility of turbulence is reduced by a smooth transition, and the fluid medium velocity changes smoothly, avoiding sudden speed and pressure changes, thereby improving the fluid medium transport efficiency. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the first valve body and the second valve body of the leak-free fluid coupler of this utility model in the connected state.

[0024] Figure 2 This is a cross-sectional view of the second valve body of the leak-free fluid coupler described in this utility model;

[0025] Figure 3 This is a cross-sectional view of the first valve body of the leak-free fluid coupler described in this utility model;

[0026] Figure 4 This is a schematic diagram of the first valve body and the second valve body of the leak-free fluid coupler of this utility model in the connected state;

[0027] Figure 5 This is a schematic diagram of the first valve body and the second valve body of the leak-free fluid coupler of this utility model in an unconnected state;

[0028] Figure 6 This is a schematic diagram of the fixed valve core of the leak-free fluid coupler described in this utility model;

[0029] Figure 7 This is a schematic diagram of the movable valve core of the leak-free fluid coupler described in this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. First valve body;

[0032] 10. Main valve; 101. Through hole; 102. Sliding groove; 103. Locking fastener;

[0033] 1021. The third elastic element;

[0034] 11. Adapter bridge; 111. Third sealing ring; 112. Insertion groove; 113. Limiting groove;

[0035] 12. Fixed valve core; 121. Second fluid gap; 122. Second sealing part;

[0036] 123. Second fluid channel; 124. Third fluid gap; 125. First sealing ring; 1231. Second guide surface;

[0037] 13. Second elastic element;

[0038] 14. Ring switch; 141. Raised ring; 1411. Sliding ramp;

[0039] 2. Second valve body;

[0040] 20. Male valve; 201. Locking groove; 202. Fourth sealing ring;

[0041] 21. Movable valve core; 211. First sealing part; 212. First fluid gap; 213. First fluid passage; 214. Second sealing ring;

[0042] 2131. First guide surface;

[0043] 22. First elastic element; 23. Identification ring. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0045] Additionally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are all based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element of this utility model must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] When an element is referred to as being "fixed to," "set on," or "contained on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to," it can be directly connected to or indirectly connected to that other element.

[0047] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] Example

[0049] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this embodiment provides a leak-free fluid coupler, including a first valve body 1; the first valve body 1 includes a female valve 10 with both ends extending through it, a transition bridge 11 slidably disposed within the female valve 10 and sealingly fitted against the inner wall of the female valve 10, a fixed valve core 12 whose head is fitted against the inner hole of the transition bridge 11 to form a second sealing part 122 or separated to form a second fluid gap 121, a second elastic member 13 disposed between the connection end of the transition bridge 11 and the female valve 10, and a slidably sleeved outside the female valve 10. The annular switch 14 has the tail of the fixed valve core 12 fixedly installed inside the mother valve 10; one end of the adapter bridge 11 is provided with an insertion groove 112 for sealing and insertion, and the other end of the adapter bridge 11 is provided with a limiting groove 113 for limiting the second elastic element 13, so as to prevent the second elastic element 13 from shifting and improve the stability of the structure; the mother valve 10 is provided with at least one locking fastener 103 that penetrates the valve wall, and the annular switch 14 is provided with a protruding ring 141 that abuts against the locking fastener 103 to perform a locking action.

[0050] Furthermore, it also includes a second valve body 2; the second valve body 2 includes a male valve 20 that extends through both ends, a movable valve core 21 that is fitted to the insertion end of the male valve 20 to form a first sealing part 211 or separated to form a first fluid gap 212, and a first elastic member 22 disposed between the movable valve core 21 and the connection end of the male valve 20. The outer wall of the male valve 20 is provided with a locking groove 201 that engages and locks with the locking fastener 103.

[0051] For ease of understanding, the first valve body 1 and the second valve body 2 are described together. The first valve body 1 and the second valve body 2 are a type of quick-connect valve, enabling the connection or disconnection of pipelines through a rapid insertion or removal operation. Simultaneously, threaded structures for connecting pipelines are provided at both ends of the male valve 20 and the female valve 10, or multiple annular protrusions are provided. The cross-section of the annular protrusions is triangular, facilitating connection and sealing with the pipeline. Furthermore, the first elastic element 22 and the second elastic element 13 mentioned above can be equidistant springs or variable-pitch springs, preferably equidistant springs made of round wire.

[0052] Specifically, when connecting the second valve body 2 and the first valve body 1, firstly, the plug end of the male valve 20 is inserted into the plug end of the female valve 10, so that the plug end of the male valve 20 is inserted and sealed with the plug groove 112 of the adapter bridge 11, and the end face of the movable valve core 21 is attached to the end face of the fixed valve core 12, thereby realizing the docking of the second valve body 2 and the first valve body 1. Then, the male valve 20 is pushed toward the female valve 10. Since the position of the fixed valve core 12 is fixed, the fixed valve core 12 abuts against the movable valve core 21 to restrict the movement of the movable valve core 21. The male valve 20 moves relative to the movable valve core 21 and pushes the transition bridge 11 to slide (at this time, the first elastic element 22 and the second elastic element 13 are compressed), so that the movable valve core 21 and the insertion end of the male valve 20 are separated to form the first fluid gap 212, and the fixed valve core 12 and the inner hole of the transition bridge 11 are separated to form the second fluid gap 121. The inner cavity of the male valve 20, the first fluid gap 212, the second fluid gap 121 and the inner cavity of the female valve 10 are connected to form a channel for the fluid medium to pass through.

[0053] To ensure the stability of the connection between the second valve body 2 and the first valve body 1, the male valve 20 is pushed toward the female valve 10 until the locking groove 201 of the male valve 20 is aligned with the locking fastener 103 on the female valve 10. Since the locking fastener 103 is installed through the valve wall of the female valve 10, the locking fastener 103 has room to move. When aligned with the locking groove 201, it can automatically fall into the locking groove 201, thereby restricting the male valve 20 from being pushed further. Then, the ring switch 14 is pushed so that the convex ring 141 abuts against the locking fastener 103, so that the locking fastener 103 is engaged with the locking groove 201, thereby realizing the locking connection between the second valve body 2 and the first valve body 1.

[0054] When unlocking the second valve body 2 and the first valve body 1, simply push the ring switch 14 to make it slide, and then pull the second valve body 2 away from the first valve body 1. Under the action of external force, the male valve 20 can lift the locking fastener 103 to disengage it from the locking groove 201, thereby unlocking the connection between the second valve body 2 and the first valve body 1. The operation is simple.

[0055] Thus, compared to the traditional button-type connection method, the leak-free fluid coupler of this embodiment, after quick plug-in connection, allows for rapid disconnection by simply tossing the switch 14 without needing to determine the direction of the connection. This avoids the need for directional docking due to environmental factors, making it more flexible and convenient to use. Similarly, unlocking also eliminates the need to find a button; simply pushing the ring switch 14 connects and unlocks the male and female connectors, making it quicker, more convenient, and highly practical.

[0056] Furthermore, for the first valve body 1, only the second valve body 2 of the same model needs to be selected for use. For example, the diameter of the connection end between the second valve body 2 and the pipeline can be different, and the connection structure of the connection end can also be different, such as using a threaded connection or a connection with multiple annular protrusions. In terms of use, it has good practicality.

[0057] like Figure 1 and Figure 3 As shown, in this embodiment, a sliding groove 102 for sliding the annular switch 14 is provided on the outer side of the mother valve 10. A third elastic element 1021 is provided between the convex ring 141 and the side wall of the sliding groove 102 away from the insertion end of the mother valve 10. The third elastic element 1021 can be a spring.

[0058] Specifically, when the locking fastener 103 is not in the locking groove 201, the locking fastener 103 abuts against the convex ring 141 of the annular switch 14 on its side, and the third elastic member 1021 is in a compressed state. When the locking fastener 103 falls into the locking groove 201, the force abutting against the convex ring 141 disappears, and the third elastic member 1021 pushes the convex ring 141 to abut against the top surface of the locking fastener 103, achieving the effect of automatic locking. When unlocking, the locking fastener 103 abuts against one side of the convex ring 141, restricting the annular switch 14 from disengaging from one end of the first valve body 1, and the third elastic member 1021 abuts against the other side of the convex ring 141, restricting the annular switch 14 from disengaging from the other end of the first valve body 1, thus ensuring the stability of the structure.

[0059] like Figure 3 As shown, in this embodiment, a sliding inclined surface 1411 (i.e., the side of the convex ring 141 that slides in conjunction with the locking fastener 103) is provided on the side of the convex ring 141 facing the insertion end of the female valve 10. Thus, when the locking fastener 103 moves, the sliding inclined surface 1411 of the convex ring 141 contacts the locking fastener 103, making the sliding smoother and achieving rapid locking and unlocking. Furthermore, the sliding inclined surface 1411 can better distribute pressure, reducing friction in contact with the locking fastener 103, preventing damage, and thus extending the service life of the leak-free fluid coupler.

[0060] like Figure 7 As shown, in this embodiment, at least one first fluid channel 213 is provided in the middle of the movable valve core 21. The first fluid channel 213 passes through one end of the fixed valve core 12. The valve head at the other end of the movable valve core 21 is fitted with the side wall of the insertion end of the male valve 20 to form a first sealing part 211, or the valve head at the other end of the movable valve core 21 is separated from the insertion end of the male valve 20 to form a first fluid gap 212. Specifically, in the initial state, the valve head of the movable valve core 21 is fitted with the side wall of the insertion end of the male valve 20 to form a first sealing part 211; when the male valve 20 is pushed toward the female valve 10, the valve head of the movable valve core 21 is separated from the insertion end of the male valve 20. At this time, a first fluid gap 212 for the fluid medium to pass through is formed between the first fluid channel 213 of the movable valve core 21 and the side wall of the insertion end of the male valve 20.

[0061] like Figure 6 As shown, at least one second fluid channel 123 is provided in the middle of the fixed valve core 12. The second fluid channel 123 is provided through one end of the fixed valve core 12. The valve head at the other end of the fixed valve core 12 is fitted with the inner hole of the adapter bridge 11 to form a second sealing part 122. Alternatively, the valve head at the other end of the fixed valve core 12 is separated from the inner hole of the adapter bridge 11, so that a second fluid gap 121 is formed between the second fluid channel 123 of the fixed valve core 12 and the inner hole of the adapter bridge 11.

[0062] The first fluid channel 213 and the second flow channel can be provided in multiple ways to expand the fluid gap and accelerate the passage of the fluid medium.

[0063] like Figure 2 and Figure 7 As shown, in this embodiment, a first guide surface 2131 is provided on the connection surface between the first fluid channel 213 and the valve head of the movable valve core 21. A second guide surface 1231 is provided on the connection surface between the second fluid channel 123 and the valve head of the fixed valve core 12. Specifically, the first guide surface 2131 and the second guide surface 1231 can be inclined surfaces or arc surfaces to provide guidance for the fluid medium. Since the fluid medium is prone to turbulence due to changes in flow velocity at the connection surface, the inclined or arc surface structure can reduce the possibility of turbulence through a smooth transition, allowing the fluid medium flow velocity to change smoothly, avoiding sudden speed and pressure changes, thereby improving the fluid medium transport efficiency.

[0064] like Figure 3 and Figure 6As shown, in this embodiment, one end of the fixed valve core 12 is disposed in the valve port of the connecting end of the mother valve 10, forming a third fluid gap 124. Specifically, one end of the fixed valve core 12 is connected to the valve port of the connecting end of the mother valve 10 to fix the position of the fixed valve core 12, and a third fluid gap 124 is formed between one end of the fixed valve core 12 and the valve port of the connecting end of the mother valve 10. For example, one end of the fixed valve core 12 can be recessed toward the axis, so that the cross-sectional area of ​​one end of the fixed valve core 12 is smaller than the cross-sectional area of ​​the valve port, thus forming a third fluid gap 124 for the fluid medium to pass through.

[0065] like Figure 1 and Figure 3 As shown, in this embodiment, the valve head of the fixed valve core 12 is provided with a first sealing ring 125 that seals with the inner hole of the adapter bridge 11; the valve head of the movable valve core 21 is provided with a second sealing ring 214 that seals with the insertion end of the male valve 20; the outer surface of the adapter bridge 11 is provided with a third sealing ring 111 that seals with the female valve 10; and the outer surface of the insertion end of the male valve 20 is provided with a fourth sealing ring 202 that seals with the insertion groove 112. The first sealing ring 125, the second sealing ring 214, the third sealing ring 111, and the fourth sealing ring 202 can be O-rings. The O-rings can be made of silicone rubber, ethylene propylene rubber, or hydrogenated nitrile rubber, so that a sealed structure is formed between the movable valve core 21 and the male valve 20, between the male valve 20 and the adapter bridge 11, between the fixed valve core 12 and the adapter bridge 11, and between the adapter bridge 11 and the female valve 10, so as to avoid leakage of fluid medium and improve the sealing performance of the structure.

[0066] like Figure 3 As shown, in this embodiment, the locking fastener 103 is a spherical structure, and the mother valve 10 is provided with a plurality of through holes 101 for placing the spherical structures in a circumferential array. The spherical structure cooperates with the sliding inclined surface 1411 of the convex ring 141 to make the sliding smoother and reduce friction, thereby extending the service life of the leak-free fluid coupler. Multiple spherical structures can be provided to increase the stability of the locking connection between the second valve body 2 and the first valve body 1.

[0067] like Figure 4 and Figure 5 As shown, in this embodiment, an identification ring 23 is provided on the outside of the second valve body 2 and / or the first valve body 1. The identification ring 23 can use different colors to indicate the temperature of the fluid medium. For example, a red identification ring 23 can be used to indicate a hot medium, and a blue identification ring 23 can be used to indicate a cold medium. Alternatively, it can be used to indicate different types of fluid media, such as using different colors to indicate different fluid media like coolant and lubricating oil, so as to facilitate quick identification and avoid incorrect connections.

[0068] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A leak-free fluid coupler, characterized in that, Including the first valve body; The first valve body includes a main valve with both ends through it, a transition bridge that is slidably disposed in the main valve and sealed against the inner wall of the main valve, a fixed valve core whose head is fitted with the inner hole of the transition bridge to form a second sealing part or separated to form a second fluid gap, a second elastic element disposed between the connection end of the transition bridge and the main valve, and an annular switch that is slidably sleeved on the outside of the main valve. The tail of the fixed valve core is fixedly disposed in the main valve. One end of the adapter bridge is provided with a plug groove for sealing and insertion, and the other end of the adapter bridge is provided with a limiting groove for limiting the second elastic element. The main valve is provided with at least one locking fastener that penetrates the valve wall, and the annular switch is provided with a protruding ring that abuts against the locking fastener to perform a locking action.

2. The leak-free fluid coupler according to claim 1, characterized in that: It also includes a second valve body; The second valve body includes a male valve that extends through both ends, a movable valve core that is fitted to the insertion end of the male valve to form a first sealing part or separated to form a first fluid gap, and a first elastic element disposed between the movable valve core and the connection end of the male valve. The outer side wall of the male valve is provided with a locking groove that engages and locks with the locking fastener.

3. The leak-free fluid coupler according to claim 1, characterized in that: A sliding groove is provided on the outer surface of the mother valve for the sliding of the annular switch. A third elastic element is provided between the convex ring and the side wall of the sliding groove away from the insertion end of the mother valve. A sliding inclined surface is provided on the side of the convex ring facing the insertion end of the mother valve.

4. The leak-free fluid coupler according to claim 2, characterized in that: The movable valve core is provided with at least one first fluid channel in the middle, the first fluid channel is provided through one end of the fixed valve core, and the valve head at the other end of the movable valve core is fitted with the side wall of the plug end of the male valve to form a first sealing part, or the valve head at the other end of the movable valve core is separated from the plug end of the male valve to form a first fluid gap. The fixed valve core is provided with at least one second fluid channel in the middle. The second fluid channel is provided through one end of the fixed valve core. The valve head at the other end of the fixed valve core is fitted with the inner hole of the transition bridge to form a second sealing part, or the valve head at the other end of the fixed valve core is separated from the inner hole of the transition bridge to form a second fluid gap.

5. The leak-free fluid coupler according to claim 4, characterized in that: A first guide surface is provided on the connection surface between the first fluid channel and the valve head of the movable valve core.

6. The leak-free fluid coupler according to claim 5, characterized in that: A second guide surface is provided on the connection surface between the second fluid channel and the valve head of the fixed valve core.

7. The leak-free fluid coupler according to claim 4 or 6, characterized in that: One end of the fixed valve core is disposed in the valve port of the connection end of the main valve and forms a third fluid gap.

8. The leak-free fluid coupler according to claim 4, characterized in that: The fixed valve core has a first sealing ring on its valve head that seals with the inner hole of the adapter bridge; the movable valve core has a second sealing ring on its valve head that seals with the insertion end of the male valve. The outer surface of the adapter bridge is provided with a third sealing ring that seals with the female valve; the outer surface of the plug end of the male valve is provided with a fourth sealing ring that seals with the plug groove.

9. The leak-free fluid coupler according to claim 1, characterized in that: The locking element is a spherical structure, and the mother valve has a plurality of through holes arranged in a circumferential array to hold the spherical structure.

10. The leak-free fluid coupler according to claim 2, characterized in that: The second valve body and / or the first valve body are provided with an identification ring.

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