Fluid delivery device

Abstract

The embodiment of the present application provides a fluid conveying device. The fluid conveying device comprises a female head device, which comprises a first valve body, the first valve body defines a first accommodating cavity, the first accommodating cavity is provided with a first valve core, one end of the first valve core located outside the first valve body is provided with a butt joint seat, the first valve core defines a first flow channel, and the first flow channel forms a butt joint port on the butt joint seat; a male head device is movable between a first position and a second position in a first direction, the male head device comprises a second valve body, the second valve body defines a second accommodating cavity, the second accommodating cavity is provided with a second valve core, one end of the second valve core facing the female head device is provided with a second piston assembly, a part of the second piston assembly facing the butt joint port is a flexible piece, and the second valve core defines a second flow channel; when the male head device is located at the second position, the first flow channel and the second flow channel are in communication, and the flexible piece is deformed to seal a circumferential edge of the butt joint port. The fluid conveying device of the present application is beneficial to meet the conveying of high-cleaning fluid.

Description

Technical Field

[0001] This application relates to the field of fluid transport equipment technology, and more particularly to a fluid transport device. Background Technology

[0002] In the prior art, quick-connect couplings typically employ a structure in which a metal valve core and a metal valve body fit together tightly. The male and female connectors are positioned by a guide post or guide groove, and the valve core is driven by spring force to achieve sealing or switching.

[0003] Existing quick-connect couplings are prone to generating impurities during operation. For example, the mating of the male and female connectors requires positioning through the rigid collision of metal components, which leads to metal friction and particulate matter during insertion and removal.

[0004] In the new energy battery, semiconductor, medical, and food industries, fluid transport must meet stringent requirements for sealing, leak-proofing, and contamination-free operation. Taking battery electrolyte filling as an example, tiny particulate impurities entering the electrolyte can easily cause internal short circuits in the battery, making it difficult to meet the high-cleanliness transport requirements. Summary of the Invention

[0005] This application provides a fluid conveying device that uses a flexible component on the male connector to achieve docking with the female connector, avoiding the generation of metal or non-metal particles due to friction and collision during insertion and removal of the male and female connectors, thus improving the cleanliness of the conveyed fluid.

[0006] This application provides a fluid conveying device, including: a female connector, comprising: a first valve body defining a first receiving cavity, the first receiving cavity being provided with a first valve core, one end of the first valve core extending out of the first valve body along a first direction, a mating seat being provided at the end of the first valve core outside the first valve body, the first valve core defining a first flow channel extending through the mating seat along the first direction, forming a mating interface on the mating seat; and a male connector movable between a first position and a second position in the first direction, the male connector including: a second valve body defining a second... The second receiving cavity is provided with a second valve core. A second piston assembly is provided at one end of the second valve core facing the female head device along a first direction. The portion of the second piston assembly facing the mating interface is a flexible component. The second valve core defines a second flow channel that extends through the second piston assembly along the first direction. When the male head device is in the first position, the second piston assembly is spaced apart from the mating seat along the first direction. When the male head device is in the second position, the second piston assembly presses against the mating interface to make the first flow channel and the second flow channel communicate, and the flexible component deforms to seal the periphery of the mating interface.

[0007] In some embodiments, the second piston assembly includes a nozzle kit fitted onto one end of the second valve core facing the female head device, a portion of the nozzle kit extending along the first direction and protruding from the second valve core to form a mating portion, and at least the mating portion of the nozzle kit constituting the flexible member.

[0008] According to some embodiments of the present invention, the mating portion includes a rubber ring; or, the inner diameter of the mating portion gradually increases in the direction toward the female head device along the first direction.

[0009] In some embodiments, the second valve body includes a sleeve section, the piston assembly includes a piston sleeve, the piston sleeve is fixedly installed on the second valve core, and a portion of the piston sleeve extends along the first direction and is sleeved on the sleeve section to form a guide section. When the male device switches between the first position and the second position, the guide section and the sleeve section move relative to each other along the first direction. A first elastic member is sleeved on the guide section, and the two ends of the first elastic member along the first direction are fixedly connected to the second valve body and the piston sleeve, respectively.

[0010] According to some embodiments of the present invention, a first mounting groove is provided on one of the inner wall of the guide section and the outer wall of the sleeve section, the first mounting groove is provided with a slip ring device, the inner wall of the guide section and the outer wall of the sleeve section are slidably connected by the slip ring device, the second valve core is radially spaced from the inner wall of the second receiving cavity; and / or, there are multiple first mounting grooves arranged along the first direction, and each of the multiple first mounting grooves is provided with the slip ring device.

[0011] According to some embodiments of the present invention, the second valve core has an opening and closing portion at one end away from the female connector, and the outer diameter of the opening and closing portion gradually decreases along the first direction toward the female connector; the second receiving cavity is connected to a fluid input pipeline at one end away from the female connector, and the second receiving cavity includes an input chamber, the cross-section of the inner wall of the input chamber gradually decreases along the first direction toward the female connector; the second valve core also includes a neck located between the second piston assembly and the opening and closing portion, and the neck is provided with an input port communicating with the second flow channel; when the male connector is in the first position, the opening and closing portion blocks the end of the input chamber facing the female connector; when the male connector is in the second position, the opening and closing portion is spaced apart from the inner wall of the input chamber, and the input chamber communicates with the first flow channel through the input port.

[0012] According to some embodiments of the present invention, the opening and closing part is provided with a second mounting groove, and a first sealing member is provided in the second mounting groove. When the male head device is located in the first position, the first sealing member blocks the gap between the opening and closing part and the inner wall of the input chamber; and / or, the second valve core is provided with a third mounting groove, the third mounting groove is located on the side of the neck facing the piston sleeve, the third mounting groove is provided with a second sealing member, and the second sealing member fills the gap between the second valve core and the inner wall of the second receiving cavity.

[0013] In some embodiments, the inner wall of the first receiving cavity facing the male connector is provided with a first conical surface, and the end of the first valve core away from the male connector along the first direction is provided with a first piston member, the first piston member having a conical portion that mates with the first conical surface; the first receiving cavity is provided with a second elastic member, the second elastic member being located at the end of the first valve core away from the male connector along the first direction, and the two ends of the second elastic member being connected to the inner wall of the first receiving cavity and the first piston member, respectively; the first valve core is provided with an output port communicating with the first flow channel, the output port being located between the first piston member and the mating seat; the first valve body defines an output flow channel, when the male connector is in the first position, the conical portion of the first piston member is in contact with the first conical surface, so that the output flow channel is disconnected from the first flow channel; when the male connector is in the second position, the first piston member is spaced apart from the first conical surface, so that the output flow channel is in communication with the first flow channel.

[0014] According to some embodiments of the present invention, the first valve body has a guide hole extending along the first direction, the docking seat is fixedly mounted with a guide post, the guide post is arranged with the first valve core, the guide post is slidably mounted in the guide hole, and the first valve core is spaced apart from the inner wall of the receiving cavity.

[0015] According to some embodiments of the present invention, the cone portion of the first piston member is provided with a fourth mounting groove, the fourth mounting groove being provided with a third sealing member, which blocks the gap between the cone portion and the first cone surface when the male head device is located in the first position; and / or, the first valve core is provided with a fifth mounting groove, the fifth mounting groove being located on the side of the output port facing the docking seat, the fifth mounting groove being provided with a fourth sealing member, the fourth sealing member being used to fill the gap between the first valve core and the inner wall of the first receiving cavity.

[0016] According to some embodiments of the present invention, the pre-clamping force of the first elastic element on the male connector is greater than the pre-clamping force of the second elastic element.

[0017] In the fluid conveying device provided in this application embodiment, when the male head device is in the first position, the second piston assembly maintains a distance from the female head docking seat, and the first flow channel and the second flow channel are isolated from each other.

[0018] When the male connector moves to the second position, the flexible component of the second piston assembly abuts against the end face of the female connector mating seat. Under pressure, the flexible component undergoes radial and axial elastic deformation, tightly fitting the periphery of the mating interface to form a dynamic sealing interface. Simultaneously, the propulsive force pushes the second valve core inward, triggering the opening of the first valve core, aligning and connecting the first and second flow channels, allowing for continuous and clean fluid transmission.

[0019] By replacing the rigid metal-to-metal contact sealing method of traditional quick plugs with flexible components, metal or non-metal particles generated by friction and collision during insertion and removal are avoided, which helps to improve the cleanliness of the transported fluid.

[0020] Furthermore, when the male connector is in the second position and the first and second flow channels are connected, the deformation of the flexible component achieves dynamic sealing, which helps to improve the sealing performance at the connection between the first and second flow channels and prevent leakage.

[0021] In addition, flexible components have excellent wear resistance and resilience, which helps to reduce mechanical wear during the docking process and reduce equipment maintenance frequency and downtime costs. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0023] Figure 1 This is a schematic diagram of the fluid delivery device when the male connector is in the second position according to an embodiment of this application.

[0024] Figure 2 This is a cross-sectional view of the fluid delivery device when the male connector is in the second position according to an embodiment of this application;

[0025] Figure 3 A cross-sectional view of the male connector provided in an embodiment of this application in a first position;

[0026] Figure 4 One of the cross-sectional views of the female connector when the male connector provided in the embodiment of this application is in the first position;

[0027] Figure 5 This is a second cross-sectional view of the female head device when the male head device provided in the embodiment of this application is in the first position.

[0028] Figure label:

[0029] 100 - Fluid transport device;

[0030] 110 - Female head assembly; 111 - First valve body; 1111 - Output flow channel; 1112 - Guide hole; 112 - First receiving cavity; 113 - First valve core; 1130 - First flow channel; 1131 - First piston component; 1132 - Output port; 1133 - Third seal; 1134 - Fourth seal; 114 - Connecting seat; 1141 - Connecting interface; 1142 - Guide post; 115 - Second elastic component;

[0031] 120 - Male connector; 121 - Second valve body; 1211 - Sleeve section; 122 - Second receiving cavity; 1221 - Input chamber; 123 - Second valve core; 1231 - Second flow channel; 1232 - Opening and closing part; 1233 - Input port; 1234 - First seal; 1235 - Second seal;

[0032] 124-Second piston assembly; 1241-Flexible component; 1242-Nose assembly; 1242a-Mating part; 1243-Piston sleeve; 1243a-Guide section; 125-First elastic component; 126-Slip ring device.

[0033] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0034] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0035] In the prior art, quick-connect couplings typically employ a structure in which a metal valve core and a metal valve body fit together tightly. The male and female connectors are positioned by a guide post or guide groove, and the valve core is driven by spring force to achieve sealing or switching.

[0036] The connection between the male and female connectors requires positioning through the rigid collision of metal components, which leads to metal friction and particulate matter during insertion and removal.

[0037] In the new energy battery, semiconductor, medical, and food industries, fluid transport must meet stringent requirements for sealing, leak-proofing, and contamination-free operation. Taking battery electrolyte filling as an example, tiny particulate impurities entering the electrolyte can easily cause internal short circuits in the battery, making it difficult to meet the high-cleanliness transport requirements.

[0038] In view of this, embodiments of this application provide a fluid conveying device that uses a flexible component on the male connector to achieve docking with the female connector, thereby avoiding metal or non-metal particles generated by friction and collision between the male and female connectors during insertion and removal, which helps to improve the cleanliness of the conveyed fluid.

[0039] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0040] For ease of explanation and understanding, the first direction can be... Figure 1 The X direction in the equation.

[0041] refer to Figures 1 to 5 This application provides a fluid conveying device 100, which includes a female connector 110 and a male connector 120.

[0042] The female head device 110 includes a first valve body 111, which defines a first receiving cavity 112. The first valve body 111 constitutes the main structure of the female head device 110, providing installation space and motion guidance for the first valve core 113, ensuring that the first valve core 113 moves stably in the axial direction (first direction), while maintaining the sealing of the fluid passage.

[0043] The first receiving cavity 112 is provided with a first valve core 113. One end of the first valve core 113 extends out of the first valve body 111 along the first direction. The end of the first valve core 113 located outside the first valve body 111 is provided with a docking seat 114, which is used to mate with the male connector 120.

[0044] The first valve core 113 defines a first flow channel 1130, and the first flow channel 1130 extends through the docking seat 114 in a first direction, forming a mating interface 1141 on the docking seat 114. Thus, the mating interface 1141 is exposed outside the first valve body 111 to facilitate docking with the male connector 120.

[0045] The interface 1141 can be configured as a groove structure. On the one hand, it facilitates the docking and positioning of the male connector 120, and at the same time, it restricts the radial degree of freedom of the male connector 120 and improves the transmission effect. On the other hand, when the male connector 120 and the female connector 110 are in a docking state, the deformation of the flexible part 1241 has a good sealing effect on the connection between the first flow channel 1130 and the second flow channel 1231.

[0046] The male connector 120 includes a second valve body 121, which constitutes the main body of the male connector. The second valve body 121 defines a second receiving cavity 122, which is used to receive the second valve core 123 and provide motion constraints for the second valve core 123, ensuring the coaxiality and stability of the second valve core 123 during the insertion process.

[0047] The second receiving cavity 122 is provided with a second valve core 123. The second valve core 123 is provided with a second piston assembly 124 at one end facing the female head device 110 along the first direction. The part of the second piston assembly 124 facing the interface 1141 is a flexible member 1241. The second valve core 123 defines a second flow channel 1231 that passes through the second piston assembly 124 along the first direction.

[0048] The male connector 120 moves between a first position and a second position in a first direction. When the male connector 120 is in the first position, the second piston assembly 124 is spaced apart from the mating seat 114 in the first direction. That is, when the male connector 120 is in the first position, the first flow channel 1130 and the second flow channel 1231 are not connected and no fluid is transported.

[0049] When the male connector 120 is in the second position, the second piston assembly 124 presses against the interface 1141 to make the first flow channel 1130 and the second flow channel 1231 connected, and the flexible member 1241 deforms to seal the periphery of the interface 1141. That is to say, when the male connector 120 is in the second position, it completes the insertion and fluid delivery. After the insertion is completed, the flexible member 1241 is pressed against the edge of the interface 1141 to form an annular dynamic sealing interface, which not only blocks the intrusion of external contaminants but also prevents internal fluid leakage.

[0050] Optionally, the flexible component 1241 can be made of elastic materials such as silicone, rubber or TPU. When it presses against the interface 1141, the flexible component 1241 achieves a seal through its own deformation.

[0051] In the fluid conveying device 100 provided in this application embodiment, when the male head device 120 is in the first position, the second piston assembly 124 and the female head docking seat 114 maintain a distance, and the first flow channel 1130 and the second flow channel 1231 are isolated from each other.

[0052] When the male connector 120 moves to the second position, the flexible element 1241 of the second piston assembly 124 abuts against the end face of the female connector 114. Under pressure, the flexible element 1241 undergoes radial and axial elastic deformation, tightly fitting the periphery of the interface 1141 to form a dynamic sealing interface. Simultaneously, the propulsive force pushes the second valve core 123 inward, triggering the opening of the first valve core 113, aligning and connecting the first flow channel 1130 with the second flow channel 1231, allowing for continuous and clean fluid transmission.

[0053] By replacing the rigid metal-to-metal contact sealing method of the traditional quick plug with the flexible component 1241, metal or non-metal particles generated by friction and collision during insertion and removal are avoided, which helps to improve the cleanliness of the conveyed fluid.

[0054] Furthermore, when the male connector 120 is in the second position and the first flow channel 1130 and the second flow channel 1231 are connected, the flexible member 1241 deforms to achieve dynamic sealing, which helps to improve the sealing performance at the connection between the first flow channel 1130 and the second flow channel 1231 and prevents leakage.

[0055] In addition, the flexible component 1241 has excellent wear resistance and resilience, which helps to reduce mechanical wear during the docking process and reduce equipment maintenance frequency and downtime costs.

[0056] refer to Figure 2 and Figure 3 In some embodiments, the second piston assembly 124 includes a nozzle assembly 1242, which is sleeved on the end of the second valve core 123 facing the female head device 110. The nozzle assembly 1242 is fixed to the front end of the second valve core 123 by a sleeve connection, achieving a reliable connection with the second valve core 123, while allowing it to undergo local elastic deformation under pressure without affecting the rigid support of the valve core body.

[0057] A portion of the structure of the mouthpiece 1242 extends along the first direction and protrudes from the second valve core 123 to form a mating portion 1242a. At least the mating portion 1242a of the mouthpiece 1242 constitutes a flexible element 1241. For example, only the mating portion 1242a on the mouthpiece 1242 may be a flexible element 1241, or the entire mouthpiece 1242 may constitute a flexible element 1241.

[0058] In this embodiment, the protruding mating portion 1242a, as the first part to contact the mating interface 1141, plays an initial guiding and pre-sealing role during the insertion process, guiding the male connector 120 and the female connector 110 to align coaxially and reducing misalignment. The protruding flexible mating portion 1242a also has guiding and buffering functions, guiding the male connector 120 and the female connector 110 to accurately align while avoiding impact damage, thereby preventing the generation of metal particles that could contaminate the transported fluid.

[0059] Understandably, the nozzle assembly 1242 can be fixedly installed on the second valve core 123 by a clip assembly, forming a detachable structure. Even if the docking part 1242a is damaged due to fatigue, only the nozzle assembly 1242 needs to be replaced, which helps to reduce the maintenance cost of the equipment.

[0060] refer to Figure 2 and Figure 3 According to some embodiments of the present invention, the mating part 1242a includes a rubber ring. In this embodiment, the flexible element 1241 is specifically implemented as a ring-shaped rubber structure (such as an O-ring, a shaped sealing ring, etc.), which has excellent elasticity, resilience and sealing performance. The rubber ring deforms uniformly when under pressure to form a 360° circumferential seal, effectively preventing fluid leakage.

[0061] Alternatively, in other embodiments of this application, the inner diameter of the mating portion 1242a gradually increases along the first direction toward the female head device 110. Thus, the mating portion 1242a forms a flared or conical structure, serving a dual function of self-guiding and fluid introduction during insertion. When the male head device 120 approaches the female head device 110, the enlarged inlet facilitates the initial alignment of the second flow channel 1231 with the first flow channel 1130, reducing the accuracy requirements for alignment. The fluid velocity decreases and the pressure stabilizes as it passes through the gradually expanding channel, reducing turbulence and bubble entrainment, making it particularly suitable for high-viscosity or easily foaming media (such as electrolytes). When mated with the interface 1141, the flexible flared edge more easily adheres to the metal end face, which helps improve the initial contact sealing effect between the mating portion 1242a and the interface 1141.

[0062] In existing quick-connect plugs, the elastic element that provides pre-tightening force is located inside the flow channel. During long-term use, some material on the upper part of the elastic element falls off and contaminates the fluid.

[0063] Continue to refer to Figure 2 and Figure 3 In some embodiments, the second valve body 121 includes a sleeve section 1211, and the piston assembly includes a piston sleeve 1243. The piston sleeve 1243 is fixedly installed on the second valve core 123, and a portion of the structure of the piston sleeve 1243 extends along the first direction and is sleeved on the sleeve section 1211 to form a guide section 1243a. When the male head device 120 switches between the first position and the second position, the guide section 1243a and the sleeve section 1211 move relative to each other along the first direction. The guide section 1243a is sleeved with a first elastic member 125, and the two ends of the first elastic member 125 along the first direction are fixedly connected to the second valve body 121 and the piston sleeve 1243, respectively.

[0064] Specifically, mounting seats may be provided radially protruding on the outer walls of the second valve body 121 and the piston sleeve 1243, with the two mounting seats facing each other in the first direction, and the two ends of the first elastic member 125 being fixedly connected to the two mounting seats respectively.

[0065] In this embodiment, when the male connector 120 is not docked with the female connector 110 (in the first position), the first elastic element 125 is in a pre-compressed or stretched state. When the male connector 120 is inserted into the female connector 110, the docking seat 114 of the female connector 110 pushes the nozzle assembly 1242 and the piston sleeve 1243, overcoming the elastic force of the first elastic element 125, causing the piston sleeve 1243 and the second valve core 123 to move as a whole towards the second valve body 121 in the first direction, and the first elastic element 125 is compressed.

[0066] Throughout the process, the first elastic element 125 remains outside the second receiving cavity 122, and its deformation and reset actions occur in the external space of the second valve body 121, without contacting the transmitted fluid. This avoids material aging, debris shedding, or metal ion precipitation caused by long-term immersion, chemical corrosion, or mechanical fatigue, which could lead to fluid contamination.

[0067] Furthermore, the working environment of the first elastic element 125 is separated from the fluid medium, thus avoiding the effects of chemical corrosion, swelling, or crystal blockage, which helps to extend the service life of the first elastic element 125.

[0068] According to some embodiments of the present invention, a first mounting groove is provided on one of the inner wall of the guide section 1243a and the outer wall of the sleeve section 1211. For example, the first mounting groove may be provided on the inner wall of the guide section 1243a, or the first mounting groove may be provided on the outer wall of the sleeve section 1211.

[0069] The first mounting groove is equipped with a slip ring device 126. The inner wall of the guide section 1243a and the outer wall of the sleeve section 1211 are slidably connected by the slip ring device 126. The slip ring device 126 can be a non-metallic slip ring, such as a slip ring made of a non-metallic low-friction material filled with polytetrafluoroethylene composite rings. This allows the guide section 1243a and the sleeve section 1211 to achieve a low-friction, metal-free sliding connection through the slip ring device 126. This also keeps the guide structure spaced apart from the first flow channel 1130, preventing metal particles from contaminating the fluid due to long-term guiding and engagement.

[0070] The second valve core 123 is radially spaced from the inner wall of the second receiving cavity 122. That is, in this embodiment, when the male head device 120 moves between the first position and the second position, the piston sleeve 1243 drives the guide section 1243a to slide axially relative to the sleeve section 1211. The sliding interface is formed by the slip ring device 126 and the metal surface (or slip ring and slip ring), and there is no direct metal-to-metal friction throughout the process. Because the second valve core 123 is isolated from the cavity wall, it only moves as a whole with the piston sleeve 1243 and does not participate in the guidance, which reduces the wear of the second valve core 123 and is conducive to meeting the requirements of high clean fluid transmission.

[0071] Furthermore, there can be multiple first mounting slots arranged along the first direction, and each of the multiple first mounting slots is provided with a slip ring device 126. In this way, the multiple slip ring devices 126 form a multi-point guide support, which helps to suppress the piston sleeve 1243 from swaying, tilting or jamming during the movement.

[0072] refer to Figure 2 and Figure 3 According to some embodiments of the present invention, the second valve core 123 is provided with an opening and closing part 1232 at one end away from the female head device 110. The outer diameter of the opening and closing part 1232 gradually decreases along the first direction toward the female head device 110. That is, the opening and closing part 1232 is a conical or bullet-shaped structure that gradually decreases along the first direction toward the female head device 110, forming a smoothly transitioned closing surface.

[0073] The end of the second receiving cavity 122 away from the female head device 110 is connected to the fluid input pipeline. For example, a pipe joint may be fixedly installed at the end of the second receiving cavity 122 away from the female head device 110, and the pipe joint is connected to the fluid input pipeline.

[0074] The second receiving cavity 122 includes an input chamber 1221. In the direction of the first direction toward the female head device 110, the cross-section of the inner wall of the input chamber 1221 gradually decreases. At this time, the input chamber 1221 is oriented toward forming a tapered hole or constriction that matches the opening and closing part 1232.

[0075] The second valve core 123 also includes a neck located between the second piston assembly 124 and the opening / closing part 1232. The neck is provided with an inlet 1233 communicating with the second flow channel 1231. The inlet 1233 serves as an inlet for fluid to enter the second flow channel 1231.

[0076] When the male connector 120 is in the first position, the opening and closing part 1232 blocks the end of the input chamber 1221 facing the female connector 110.

[0077] At this time, under the action of the first elastic element 125 (or other reset mechanism), the second valve core 123 is pushed towards the female head device 110, and the opening and closing part 1232 is embedded in the end of the input chamber 1221 facing the female head device 110. The opening and closing part 1232 is tightly fitted with the inner wall of the input chamber 1221, blocking the fluid inlet and realizing the normally closed state to prevent leakage or dripping.

[0078] When the male connector 120 is in the second position, the opening / closing part 1232 is spaced apart from the inner wall of the input chamber 1221, and the input chamber 1221 is connected to the first flow channel 1130 through the input port 1233. As the male connector 120 moves to the second position, the mating seat 114 pushes the nozzle assembly 1242 of the male connector, causing the entire second valve core 123 to move towards the second valve body 121. The opening / closing part 1232 gradually disengages from the constricted area of ​​the input chamber 1221, forming a gap between them. At this time, the input chamber 1221 is connected to the first flow channel 1130 through the input port 1233, which helps to improve the reliability of the opening and closing of the first flow channel 1130.

[0079] According to some embodiments of the present invention, the opening and closing part 1232 is provided with a second mounting groove, and a first sealing member 1234 is provided in the second mounting groove. When the male device 120 is in the first position, the first sealing member 1234 seals the gap between the opening and closing part 1232 and the inner wall of the input chamber 1221. Thus, even if there are certain processing errors on the surfaces of the opening and closing part 1232 and the input chamber 1221 or gaps are generated due to thermal expansion and contraction, the first sealing member 1234 can still compensate for the gaps through its own deformation, ensuring an absolute closing effect and no leakage.

[0080] The second valve core 123 is provided with a third mounting groove, which is located on the side of the neck facing the piston sleeve 1243. The third mounting groove is provided with a second seal 1235, which fills the gap between the second valve core 123 and the inner wall of the second receiving cavity 122. Thus, the second seal 1235 forms a dynamic shaft seal at this location, allowing the valve core to slide axially while blocking fluid from flowing to non-flow channel areas, achieving motion isolation, which is beneficial to extending the service life of the male connector 120.

[0081] refer to Figure 2 , Figure 4 and Figure 5 In some embodiments, the inner wall of the first receiving cavity 112 facing the male head device 120 is provided with a first conical surface, and the end of the first valve core 113 away from the male head device 120 along the first direction is provided with a first piston member 1131, the first piston member 1131 having a conical portion that cooperates with the first conical surface.

[0082] The first receiving cavity 112 is provided with a second elastic element 115. The second elastic element 115 is located at the end of the first valve core 113 away from the male device 120 along the first direction. The two ends of the second elastic element 115 are respectively connected to the inner wall of the first receiving cavity 112 and the first piston 1131. The second elastic element 115 is used to provide elastic force to move the first valve core 113 back to the male device 120.

[0083] The first valve core 113 is provided with an output port 1132 that communicates with the first flow channel 1130. The output port 1132 is located between the first piston 1131 and the docking seat 114.

[0084] The first valve body 111 defines the output flow channel 1111. When the male connector 120 is in the first position, the cone portion of the first piston member 1131 is in contact with the first cone surface, so that the output flow channel 1111 is disconnected from the first flow channel 1130. When the male connector 120 is in the second position, the first piston member 1131 is spaced apart from the first cone surface, so that the output flow channel 1111 is connected to the first flow channel 1130.

[0085] In this embodiment, when the male connector 120 is in the first position, under the action of the second elastic member 115, the first valve core 113 is pushed towards the male connector 120, and the conical portion of the first piston member 1131 is in close contact with the first conical surface, forming a sealing pair. At this time, the output port 1132 is located on the upstream side of the sealing pair (near the docking seat 114), while the inlet of the output flow channel 1111 is located downstream of the sealing pair. Therefore, the first flow channel 1130 and the output flow channel 1111 are physically separated, and the female connector 110 is in a closed state to prevent residual liquid leakage or air entry.

[0086] During the movement of the male device 120 to the second position, the nozzle assembly 1242 of the male device 120 pushes the mating seat 114 of the female head, causing the entire first valve core 113 to move backward (away from the male head) against the elastic force of the second elastic element 115; the first piston 1131 then retracts, and the cone part disengages from the first cone surface, forming a gap between the two; at this time, the fluid can flow through the first flow channel 1130, the output port 1132, and the gap to the output flow channel 1111, thus achieving conduction.

[0087] When the male connector 120 is in the second position, the first valve core 113 remains in the retracted state, and the output port 1132 is fully exposed to the inlet area of ​​the output flow channel 1111, allowing the fluid to flow smoothly. At the same time, the flexible docking part 1242a of the male connector 120 is sealed, and the fluid conveying device 100 operates stably.

[0088] refer to Figure 5According to some embodiments of the present invention, the first valve body 111 has a guide hole 1112 extending in a first direction, the docking seat 114 is fixedly installed with a guide post 1142, the guide post 1142 is arranged with the first valve core 113, the guide post 1142 is slidably installed in the guide hole 1112, and the first valve core 113 is spaced apart from the inner wall of the first receiving cavity 112.

[0089] In this embodiment, when the male device 120 is inserted, its mouthpiece 1242 pushes against the docking seat 114, causing the guide post 1142 to slide axially along the guide hole 1112, thereby pulling the entire first valve core 113 to move backward; since the guide post 1142 and the guide hole 1112 are a sliding pair with precise fit, the first valve core 113 does not contact the cavity wall of the first receiving cavity 112.

[0090] In traditional structures, the valve core slides entirely within a metal cavity. Even with surface treatment, long-term use will still result in the generation of iron and copper shavings due to fretting wear. In this embodiment, by externalizing the guiding function to the guide post 1142 and separating the first valve core 113 body from the first receiving cavity 112, the generation of such particles is eliminated at the source, which is beneficial to meeting the requirements for high-cleanliness fluid transmission.

[0091] Furthermore, a linear bearing can be installed inside the guide hole 1112, and the linear bearing is installed on the guide post 1142 to improve the accuracy of the guiding action.

[0092] According to some embodiments of the present invention, the cone portion of the first piston member 1131 is provided with a fourth mounting groove, and the fourth mounting groove is provided with a third sealing member 1133. When the male device 120 is in the first position, the third sealing member 1133 blocks the gap between the cone portion and the first cone surface. Thus, when the male device 120 is in the first position, the first piston member 1131 moves forward under the action of the second elastic member 115, the cone portion presses against the first cone surface, and the third sealing member 1133 is compressed between the two. Even if there are minor machining errors, thermal deformations, or surface roughness fluctuations between the cone portion and the first cone surface, the third sealing member 1133 can still fill the gap through elastic deformation to achieve an absolute static seal and prevent fluid leakage or air backflow.

[0093] The first valve core 113 is provided with a fifth mounting groove, which is located on the side of the output port 1132 facing the docking seat 114. The fifth mounting groove is provided with a fourth sealing element 1134, which is used to fill the gap between the first valve core 113 and the inner wall of the first receiving cavity 112. In this way, the fourth sealing element 1134 forms a dynamic shaft seal, allowing the first valve core 113 to slide axially, while blocking the non-directional channel of radial fluid, thereby achieving environmental isolation during fluid transportation.

[0094] In existing quick-connect couplings, after the male and female connectors are separated, some fluid remains in the flow channel, causing contamination.

[0095] According to some embodiments of the present invention, the pre-clamping force of the first elastic member 125 on the male head device 120 is greater than the pre-clamping force of the second elastic member 115.

[0096] In this embodiment, during the docking process of the male connector 120 and the female connector 110, in the initial state (the male connector 120 is in the first position): both the male connector 120 and the female connector 110 are normally closed, and the internal liquid path is disconnected to prevent external contaminants from entering or internal media from leaking. Docking begins: the male connector 120 presses down, and the nozzle assembly 1242 first contacts the docking seat 114. At this time, the sealing surfaces of both are not yet open, and the liquid path is still closed. Further pressing down: because the pre-compression force of the first elastic element 125 is greater than the pre-compression force of the second elastic element 115, during the continued pressing down, the first elastic element 125 is compressed first, causing the second valve core 123 to move relative to the second valve body 121, causing the opening / closing part 1232 to disengage from the inner wall of the input chamber 1221, and the first flow channel 1130 to open. Fully Connected: As the male connector 120 continues to press down, until the guide section 1243a of the friction piston body contacts and presses against the second valve body 121, the second valve core 123 is fully open. Subsequently, under the further pressure of the male connector, the first valve core 113 overcomes the elastic force of the second elastic element 115 and moves downward, causing the cone to disengage from the first cone surface of the first receiving cavity 112, and the second flow channel 1231 connects with the output flow channel 1111. At this time, the first flow channel 1130 and the output flow channel 1111 are fully connected, realizing fluid transmission.

[0097] During the process of male connector 120 disengaging from female connector 110, in the initial state (male connector 120 is in the second position): male connector 120 and female connector 110 are in a docking state, the fluid path is unobstructed, and fluid transfer is carried out.

[0098] Male device 120 is raised: When separation is required, the male device 120 is raised first, and the first valve core 113 moves upward under the elastic force of the second elastic element 115 until the cone re-contacts and presses against the first cone surface. At the same time, the third sealing element 1133 installed on the first valve core 113 presses against the first cone surface, thereby disconnecting the internal flow channel of the female device 110.

[0099] As the male connector continues to rise, the second valve core 123 moves relative to the first valve body 111 under the action of the first elastic element 125, increasing the gap in the input chamber 1221 (closing the fluid input pipeline) and generating negative pressure. This negative pressure draws back the fluid in the first flow channel 1130 and the second flow channel 1231 connecting the first valve core 113 and the second valve core 123, thereby reducing the amount of residual liquid and preventing contamination of the flow channels. The male connector 120 continues to rise until it is completely detached from the female connector 110. Throughout the process, the negative pressure back-suction mechanism minimizes residual fluid and ensures the cleanliness of the system.

[0100] The male head device 120 continues to rise until it is completely separated from the female head device 110. Throughout the process, the negative pressure back suction mechanism minimizes residual fluid and ensures the cleanliness of the system.

[0101] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A fluid conveying device (100), characterized in that, include: The female connector device (110) includes: a first valve body (111), the first valve body (111) defining a first receiving cavity (112), the first receiving cavity (112) being provided with a first valve core (113), one end of the first valve core (113) extending out of the first valve body (111) along a first direction, the end of the first valve core (113) located outside the first valve body (111) being provided with a docking seat (114), the first valve core (113) defining a first flow channel (1130), and the first flow channel (1130) extending through the docking seat (114) along the first direction, forming a mating interface (1141) on the docking seat (114). A male connector (120) is movable between a first position and a second position in the first direction. The male connector (120) includes: a second valve body (121) defining a second receiving cavity (122), the second receiving cavity (122) being provided with a second valve core (123), the second valve core (123) having a second piston assembly (124) at one end facing the female connector (110) in the first direction, the portion of the second piston assembly (124) facing the mating interface (1141) having a flexible structure (1241), and the second valve core (123) defining a second flow channel (1231) penetrating the second piston assembly (124) in the first direction. When the male connector (120) is in the first position, the second piston assembly (124) and the docking seat (114) are spaced apart along the first direction. When the male connector (120) is in the second position, the second piston assembly (124) presses against the docking interface (1141) to make the first flow channel (1130) and the second flow channel (1231) connected, and the flexible member (1241) deforms to seal the periphery of the docking interface (1141).

2. The fluid conveying device (100) according to claim 1, characterized in that, The second piston assembly (124) includes a nozzle kit (1242) which is sleeved on one end of the second valve core (123) facing the female head device (110). A portion of the structure of the nozzle kit (1242) extends out of the second valve core (123) along the first direction to form a mating portion (1242a). At least the mating portion (1242a) of the nozzle kit (1242) constitutes the flexible member (1241).

3. The fluid conveying device (100) according to claim 2, characterized in that, The docking portion (1242a) includes a rubber ring; or, Along the first direction toward the female head device (110), the inner diameter of the docking portion (1242a) gradually increases.

4. The fluid conveying device (100) according to claim 1, characterized in that, The second valve body (121) includes a sleeve section (1211), and the piston assembly includes a piston sleeve (1243). The piston sleeve (1243) is fixedly installed on the second valve core (123), and a portion of the structure of the piston sleeve (1243) extends along the first direction and is sleeved on the sleeve section (1211) to form a guide section (1243a). When the male head device (120) switches between the first position and the second position, the guide section (1243a) and the sleeve section (1211) move relative to each other along the first direction. The guide section (1243a) is covered with a first elastic element (125), and the two ends of the first elastic element (125) along the first direction are fixedly connected to the second valve body (121) and the piston sleeve (1243) respectively.

5. The fluid conveying device (100) according to claim 4, characterized in that, A first mounting groove is provided on one of the inner wall of the guide section (1243a) and the outer wall of the sleeve section (1211), and a slip ring device (126) is provided in the first mounting groove. The inner wall of the guide section (1243a) and the outer wall of the sleeve section (1211) are slidably connected by the slip ring device (126). The second valve core (123) is radially spaced from the inner wall of the second receiving cavity (122); and / or, The first mounting slots are multiple of them arranged along the first direction, and each of the multiple first mounting slots is provided with the slip ring device (126).

6. The fluid conveying device (100) according to claim 4, characterized in that, The second valve core (123) is provided with an opening and closing part (1232) at one end away from the female head device (110). The outer diameter of the opening and closing part (1232) gradually decreases along the first direction toward the female head device (110). The second receiving cavity (122) is connected to a fluid input pipeline at one end away from the female head device (110). The second receiving cavity (122) includes an input chamber (1221). The cross-section of the inner wall of the input chamber (1221) gradually decreases along the first direction toward the female head device (110). The second valve core (123) also includes a neck located between the second piston assembly (124) and the opening / closing part (1232), the neck being provided with an inlet (1233) communicating with the second flow channel (1231). When the male connector (120) is in the first position, the opening and closing part (1232) blocks one end of the input chamber (1221) facing the female connector (110); when the male connector (120) is in the second position, the opening and closing part (1232) is spaced apart from the inner wall of the input chamber (1221), and the input chamber (1221) is connected to the first flow channel (1130) through the input port (1233).

7. The fluid conveying device (100) according to claim 6, characterized in that, The opening / closing part (1232) is provided with a second mounting groove, and a first sealing element (1234) is provided in the second mounting groove. When the male connector (120) is in the first position, the first sealing element (1234) seals the gap between the opening / closing part (1232) and the inner wall of the input chamber (1221); and / or, The second valve core (123) is provided with a third mounting groove, which is located on the side of the neck facing the piston sleeve (1243). The third mounting groove is provided with a second seal (1235), which fills the gap between the second valve core (123) and the inner wall of the second receiving cavity (122).

8. The fluid conveying device (100) according to claim 1, characterized in that, The inner wall of the first receiving cavity (112) facing the male head device (120) is provided with a first conical surface, and the first valve core (113) is provided with a first piston (1131) at the end away from the male head device (120) along the first direction. The first piston (1131) has a conical part that cooperates with the first conical surface. The first receiving cavity (112) is provided with a second elastic element (115). The second elastic element (115) is located at one end of the first valve core (113) away from the male head device (120) along the first direction. The two ends of the second elastic element (115) are respectively connected to the inner wall of the first receiving cavity (112) and the first piston (1131). The first valve core (113) is provided with an output port (1132) communicating with the first flow channel (1130), and the output port (1132) is located between the first piston (1131) and the docking seat (114); The first valve body (111) defines an output flow channel (1111). When the male connector (120) is in the first position, the cone of the first piston (1131) is in contact with the first cone surface to disconnect the output flow channel (1111) from the first flow channel (1130). When the male connector (120) is in the second position, the first piston (1131) is spaced apart from the first cone surface to connect the output flow channel (1111) with the first flow channel (1130).

9. The fluid conveying device (100) according to claim 8, characterized in that, The first valve body (111) has a guide hole (1112) extending along the first direction. The docking seat (114) is fixedly installed with a guide post (1142). The guide post (1142) is arranged with the first valve core (113). The guide post (1142) is slidably installed in the guide hole (1112). The first valve core (113) is spaced apart from the inner wall of the first receiving cavity (112).

10. The fluid conveying device (100) according to claim 9, characterized in that, The first piston (1131) has a fourth mounting groove on its conical portion, and a third sealing element (1133) is provided in the fourth mounting groove. When the male head device (120) is in the first position, the third sealing element (1133) seals the gap between the conical portion and the first conical surface; and / or, The first valve core (113) is provided with a fifth mounting groove, which is located on the side of the output port (1132) facing the docking seat (114). The fifth mounting groove is provided with a fourth sealing element (1134), which is used to fill the gap between the first valve core (113) and the inner wall of the first receiving cavity (112).

11. The fluid conveying device (100) according to claim 8, characterized in that, The pre-clamping force of the first elastic element (125) on the male head device (120) is greater than the pre-clamping force of the second elastic element (115).

Images