Fluid connector

Abstract

According to the fluid connector, a first connecting assembly of the fluid connector comprises a first connecting end, and a locking groove is formed in the outer wall of the first connecting end; a second connecting assembly of the fluid connector comprises a second connecting end, a through groove is formed in the second connecting end, a locking rod penetrates through the through groove, the two ends of the locking rod are located outside the second connecting end, the middle of the locking rod is located in the second connecting end, the locking rod can move in the depth direction of the through groove, a blocking protrusion is arranged outside a second cylinder, and a first locking ring is located between the blocking protrusion and the locking rod and abuts against the locking rod. The through groove faces outwards and inclines towards the first locking ring, and the first elastic piece is used for pushing the first locking ring to move away from the blocking protrusion. At the locking position of the fluid connector, the first connecting end is inserted into the second connecting end, and the part, located in the second barrel, of the locking rod is locked in the locking groove under the pushing of the first locking ring; at the unlocking position of the fluid connector, the first connecting end is inserted into the second connecting end, and the locking rod is located outside the locking groove. According to the fluid connector, single-hand quick locking and separation can be achieved.

Description

Technical Field

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

[0002] With the iteration of AI technology, the power density of high-performance GPUs and CPUs has surged. Chips such as the NVIDIA H100 have driven the power of a single server rack to exceed 100kW, and traditional air cooling can no longer meet the heat dissipation requirements due to its low thermal conductivity. Liquid cooling systems have become the preferred choice due to their high thermal conductivity and low energy consumption, and fluid connectors are the core components of liquid cooling systems.

[0003] Existing fluid connectors consist of a male and a female end (i.e., two connecting ends). After mating, the valves on the male and female ends open to form a flow channel for heat dissipation. However, the connection process of fluid connectors has a fatal flaw: before connecting the male and female ends to each other and when disconnecting them, an additional step of releasing the limit switch must be performed. This step significantly increases complexity. In the confined space of high-density deployments in data centers, operators are prone to forgetting or making operational errors. Re-operating after an error not only wastes maintenance time, but repeated attempts also wear down the connector, reducing its lifespan. In emergency maintenance, it may even cause downtime losses.

[0004] It is important to note that the techniques described in this section are not necessarily those previously conceived or adopted. Unless otherwise specified, no technique described in this section should be assumed to be prior art simply because it is included in this section. Similarly, unless otherwise specified, the issues mentioned in this section should not be considered to be recognized in any prior art. Summary of the Invention

[0005] This application provides a fluid connector designed to solve the technical problem that existing fluid connectors require additional release of the limiting operation for connection and disconnection.

[0006] To achieve the above objectives, this application provides a fluid connector, which includes a first connecting component and a second connecting component: The first connecting assembly includes a first cylindrical body and a first valve assembly disposed within the first cylindrical body. The first cylindrical body includes a first connecting end, and the outer wall of the first connecting end extends outward to form a first protrusion and a second protrusion arranged at intervals along its axial direction. The first protrusion and the second protrusion cooperate to form a locking groove. The first valve assembly is used to control the flow of the first cylindrical body. The second connecting assembly includes a second cylinder, a second valve assembly, a locking rod, a first locking ring, and a first elastic element. The second cylinder includes a second connecting end, and the second valve assembly is disposed within the second cylinder. A through groove is formed through the second connecting end, the length direction of which is parallel to the circumference of the second cylinder. The locking rod passes through the through groove parallel to the diameter of the second connecting end, with both ends outside the second connecting end and the middle portion inside. The locking rod is movable within the through groove along its depth direction. A retaining protrusion extends outward from the outer wall of the second cylinder. A locking ring is sleeved outside the second connecting end and located between the stop protrusion and the locking rod. The first locking ring abuts against the locking rod, and the through groove is inclined towards the first locking ring in the outward direction. A first elastic member is sleeved outside the second connecting end and located between the stop protrusion and the first locking ring. The first elastic member is used to push the first locking ring away from the stop protrusion. The second valve assembly is used to control the flow of the second cylinder. The outer wall of the first connecting end and the inner wall of the second connecting end are detachably inserted. The inner wall of the second connecting end has a limiting part for preventing the first connecting end from being further inserted. The fluid connector has a locked position and an unlocked position. In the locked position, the first connecting end is inserted into the second connecting end, and the portion of the locking rod located inside the second cylinder is locked in the locking groove under the push of the first locking ring. The limiting part is connected to the first connecting end. In the unlocked position, the first connecting end is inserted into the second connecting end, and the locking rod is located outside the locking groove.

[0007] Optionally, the first locking ring, the first elastic element, and the stop protrusion are located on the side of the through groove opposite to the extended end of the second connecting end.

[0008] Optionally, the limiting portion is formed by extending inward from the side of the through groove away from the second connecting end, the first protrusion is closer to the extension end of the first connecting end than the second protrusion, the shape of the limiting portion is adapted to the shape of the first protrusion, and the limiting portion can abut against the first protrusion.

[0009] Optionally, the side of the stop protrusion facing away from the second cylinder extends toward the first locking ring to form a stop cylinder, and the first elastic member is assembled inside the stop cylinder.

[0010] Optionally, the outer wall of the second cylinder is recessed inward to form an annular limiting groove. The length direction of the limiting groove is parallel to the circumferential direction of the second cylinder. The limiting groove is located on the side of the locking rod away from the first locking ring. The second connecting assembly includes a retaining ring, which is partially sleeved in the limiting groove. The second connecting assembly includes a locking cylinder, which is spaced outside the second connecting end. The locking cylinder is sleeved on the end of the retaining cylinder near the first locking ring, the first elastic element, the first locking ring, the locking rod, and the limiting groove. The inner wall of the locking cylinder extends inward to form a second locking ring. The second locking ring is located between the retaining ring and the locking rod and connects the portion of the retaining ring outside the limiting groove and the side of the locking rod away from the first locking ring.

[0011] Optionally, the retaining ring is C-shaped and is made of an elastic material.

[0012] Optionally, the first valve assembly includes an abutment protrusion, a valve block, and a second elastic element connected in sequence, wherein the valve block is movably connected to the first connecting end, and the abutment protrusion is fixedly connected to the first cylinder. The second valve assembly includes an abutment block, a valve cylinder, and a third elastic element. One end of the abutment block is located inside the second connecting end with a gap, and the other end of the abutment block is fixedly connected to the second cylinder. A liquid passage gap is formed between the abutment block and the second cylinder. The valve cylinder is movably sleeved between the second connecting end and the abutment block. The third elastic element is sleeved outside the abutment block, and the two ends of the third elastic element are respectively connected to the end of the abutment block connected to the second cylinder and the valve cylinder. The fluid connector has a detached state and a connected state. In the detached state, the valve block is sealed to the first connecting end under the push of the second elastic member, and the valve cylinder is sealed to the second connecting end and the abutment block under the push of the third elastic member. In the connected state, the first connecting end is inserted into the second connecting end and abuts against the valve cylinder. The valve cylinder is located between the two ends of the second cylinder to open the closure of the second connecting end. The length of the second elastic member is shorter than its length in the detached state. The abutment block extends into the first cylinder and abuts against the valve block. The valve block is located between the two ends of the first cylinder to open the closure of the first connecting end. The length of the third elastic member is shorter than its length in the detached state. The first cylinder and the second cylinder are connected.

[0013] Optionally, the first cylinder includes a first sub-cylinder and a second sub-cylinder. The first sub-cylinder is cylindrical and includes a small-diameter section and a large-diameter section connected to each other. The diameter of the large-diameter section is larger than the diameter of the small-diameter section. One end of the second sub-cylinder is inserted into the large-diameter section and its end face abuts against the end face of the small-diameter section connected to the large-diameter section. The outer wall of the portion of the second sub-cylinder outside the large-diameter section extends outward to form a limiting protrusion. The end face of the large-diameter section away from the small-diameter section abuts against the limiting protrusion. The abutting protrusion is provided inside the second sub-cylinder, the valve block is provided inside the end of the small diameter section away from the large diameter section, and the second elastic element is provided inside the first sub-cylinder and the second sub-cylinder.

[0014] Optionally, the abutting protrusion is formed by extending inward from the inner wall of the second cylinder.

[0015] Optionally, the valve block includes an integrally formed connecting sub-part and a flow guiding sub-part connected to each other. The connecting sub-part is used to seal the inner wall of the first connecting end. The flow guiding sub-part is arranged to first expand and then contract in the direction away from the connecting sub-part. The size of the end of the flow guiding sub-part connected to the connecting sub-part is larger than the size of the connecting sub-part. The peripheral sidewall of the flow guiding sub-part is recessed to form at least two first flow guiding areas. The length direction of the at least two first flow guiding areas is parallel to the length direction of the flow guiding sub-part. The at least two first flow guiding areas are arranged circumferentially along the flow guiding sub-part.

[0016] Optionally, the second valve assembly is further away from the extended end of the second connecting end than the through groove. The inner wall of the second connecting end is recessed outward to form a first connecting ring groove and a second connecting ring groove arranged at intervals along its axial direction. The length direction of the first connecting ring groove and the second connecting ring groove is parallel to the circumferential direction of the second cylinder. The extended end of the second connecting end, the through groove, the first connecting ring groove, and the second connecting ring groove are arranged sequentially. The second connecting assembly includes a first sealing ring and a second sealing ring respectively interference-fitted into the first connecting ring groove and the second connecting ring groove. In the disassembled state, the first sealing ring is located between the through groove and the valve cylinder, and the second sealing ring seals the outer wall of the valve cylinder. In the connected state, both the first sealing ring and the second sealing ring seal the outer wall of the first cylinder.

[0017] Optionally, the second cylinder includes a liquid-passing end, and a liquid-passing port is provided on the peripheral sidewall of the liquid-passing end. The liquid-passing port communicates with the liquid-passing gap. The abutment block includes a connecting part that is fixedly connected to the second cylinder. The liquid-passing port is further away from the extended end of the liquid-passing end than the connecting part.

[0018] Optionally, the abutment block includes an integrally formed first connecting plate, a connecting frame, and a second connecting plate connected in sequence. The first connecting plate is located inside the second connecting end with a gap. The peripheral sidewall of the first connecting plate is used to seal and connect the valve cylinder. The two ends of the connecting frame are gradually tapered inward. The second connecting plate is the connecting part. The peripheral sidewall of the second connecting plate is sleeved on the inner wall of the second cylinder. A liquid passage notch is formed on the peripheral sidewall of the second connecting plate. The end of the connecting frame connected to the second connecting plate is recessed to form a second flow guiding area that smoothly transitions and connects with the liquid passage notch. The liquid inlet is opposite to the second flow guiding area.

[0019] This fluid connector enables quick, one-handed locking and unlocking. When the first connecting end is inserted into the second connecting end, the locking rod, which passes through the through groove, automatically and precisely engages with the locking groove formed by the first and second protrusions under the continuous thrust applied by the first locking ring (through the first elastic element). Unlocking requires only one-handed force to overcome the pre-tightening force of the first elastic element, which separates the locking groove and locking rod, significantly reducing operational complexity and time costs. Furthermore, under the continuous pre-tightening thrust of the first elastic element, the locking rod remains tightly fitted to the locking groove in the locked position, effectively preventing loosening even under harsh conditions such as high-frequency vibration, impact, or fluid pressure pulsation. Additionally, the design requiring overcoming the pre-tightening force of the first elastic element for unlocking provides clear operational feedback, effectively preventing accidental unlocking due to accidental contact or collision, further enhancing operational safety.

[0020] In the fluid connector of this application, the design of the through groove facing outward and inclined towards the first locking ring, and the first elastic element being installed parallel to the first connecting end in the axial direction, causes the locking rod to be subjected to a resultant force (the resultant force of the thrust of the first locking ring and the support force of the through groove) towards the inside of the first cylinder. This not only makes the locking rod more effectively locked, but also allows the first elastic element to be installed in a wider installation position (compared to radial installation parallel to the first connecting end). The axial installation of the first elastic element creates a more compact layout, avoids interference of the circumferential structure, and makes the overall volume of the fluid connector more streamlined. It also allows for the use of a first elastic element with a larger stroke and more stable elastic force, ensuring a continuous and reliable pre-tightening thrust on the first locking ring, further enhancing the stability of the locking rod.

[0021] It should be understood that the description in this section is not intended to identify key or important features of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0022] The accompanying drawings exemplify embodiments and form part of the specification, working together with the textual description to explain exemplary implementations of the embodiments. The drawings shown are for illustrative purposes only and do not limit the scope of the claims. Throughout the drawings, the same reference numerals refer to similar but not necessarily identical elements.

[0023] Figure 1 This is a perspective view of an embodiment of the fluid connector of this application; Figure 2 for Figure 1 A cross-sectional view of the embodiment shown; Figure 3 for Figure 1 The connectivity diagram of the embodiment shown; Figure 4 for Figure 1 The diagram shows the unlocking location in the embodiment shown. Figure 5 for Figure 1 A perspective view of the first connecting component in the illustrated embodiment; Figure 6 for Figure 1 A cross-sectional view of the first connecting component in the illustrated embodiment; Figure 7 for Figure 1 An exploded view of a portion of the structure of the first connecting component in the embodiment shown. Figure 8 for Figure 1 A perspective view of the second connecting component in the illustrated embodiment; Figure 9 for Figure 1 Cross-sectional view of the second connecting component in the illustrated embodiment Figure 1 ; Figure 10 for Figure 1 Cross-sectional view of the second connecting component in the illustrated embodiment Figure 2 ; Figure 11 for Figure 1 Cross-sectional view of the second connecting component in the illustrated embodiment Figure 3 ; Figure 12 for Figure 1 An exploded view of a portion of the structure of the second connecting component in the illustrated embodiment.

[0024] Explanation of reference numerals in the attached figures: Detailed Implementation

[0025] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] In the description of the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The term "multiple" means two or more, unless otherwise explicitly specified. The term "comprising" indicates the presence of the described feature, whole, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or sets thereof. The term "and / or" describes the relationship between related objects, indicating that three relationships may exist. For example, A and / or B may include three cases: A existing alone, A and B existing simultaneously, and B existing alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0028] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art; the terms used in the embodiments of this application are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "comprising" and "having" and any variations thereof in the specification, claims and foregoing description of the drawings of this application are intended to cover non-exclusive inclusion.

[0029] Furthermore, terms such as "exemplary," "for example," and "optional" are used to indicate illustrative purposes. Any technical solution described by the above terms in the embodiments of this application should not be construed as being more preferred or advantageous than other technical solutions. Specifically, these terms are intended to present the relevant technical concepts in terms of specific implementation methods.

[0030] This application provides a fluid connector including a locking rod (e.g., a steel pin) with a direct-push locking structure, allowing for quick locking and disengagement with one hand. Both connection ends of this fluid connector maintain a tight seal during both mating and disconnection, preventing leakage and ensuring safety and reliability. This fluid connector can be color-coded (e.g., red or blue) for easy identification of the inlet and outlet. The working pressure of this fluid connector can be 0~0.7MPa, the working temperature can be -40℃~110℃, and the working medium can be ethylene glycol aqueous solution (0~50% concentration) or pure water + corrosion inhibitor. The housing of this fluid connector can be made of stainless steel or aluminum alloy. The mechanical life of this fluid connector is 500 mating cycles.

[0031] The fluid connector of this application will be described in detail below with reference to the accompanying drawings.

[0032] Please see Figures 1 to 12This application discloses a fluid connector 1, which includes a first connecting assembly 10 and a second connecting assembly 20. The first connecting assembly 10 includes a first cylindrical body 110 (i.e., the aforementioned housing portion) and a first valve assembly disposed within the first cylindrical body 110. The first cylindrical body 110 includes a first connecting end 100, and the outer wall of the first connecting end 100 extends outward to form a first protrusion 111c and a second protrusion 111d arranged at intervals along its axial direction. The first protrusion 111c and the second protrusion 111d cooperate to form a locking groove 111e. The first valve assembly is used to control the flow in the first cylindrical body 110. The second connecting assembly 20 includes a second cylindrical body 210 (i.e., the aforementioned housing portion), a second valve assembly, a locking rod 260, a first locking ring 270, and a first elastic member 241. The second cylindrical body 210 includes a second connecting end 200, and the second valve assembly is disposed within the second cylindrical body 210. A through groove 211 is formed through the second connecting end 200. The length direction of the through groove 211 is parallel to the circumferential direction of the second cylinder 210. A locking rod 260, parallel to the diameter of the second connecting end 200, passes through the through groove 211. The two ends of the locking rod 260 are located outside the second connecting end 200, and the middle part of the locking rod 260 is located inside the second connecting end 200. The locking rod 260 can move along the depth direction of the through groove 211 within the through groove 211. A stop protrusion 212 extends outward from the outer wall of the second cylinder 210. A first locking ring 270 is sleeved outside the second connecting end 200 and located between the stop protrusion 212 and the locking rod 260, with the first locking ring 270 abutting against the locking rod 260. The through groove 211 is inclined towards the first locking ring 270 in the outward direction. A first elastic element 241 is sleeved outside the second connecting end 200. The first elastic element 241 is located between the stop protrusion 212 and the first locking ring 270, and is used to push the first locking ring 270 away from the stop protrusion 212. The second valve assembly is used to control the flow of the second cylinder 210. The outer wall of the first connecting end 100 is detachably inserted into the inner wall of the second connecting end 200, and the inner wall of the second connecting end 200 has a limiting portion 218 for preventing further insertion of the first connecting end 100. The fluid connector 1 has a locked position and an unlocked position. Please refer to... Figure 2 and Figure 3 In the locked position, the first connecting end 100 is inserted into the second connecting end 200, and the portion of the locking rod 260 located within the second cylinder 210 is locked in the locking groove 111e by the push of the first locking ring 270. The limiting part 218 is connected to the first connecting end 100. Please refer to [link / reference]. Figure 4 In the unlocked position, the first connecting end 100 is inserted into the second connecting end 200, and the locking rod 260 is located outside the locking groove 111e.

[0033] The fluid connector 1 of this application enables quick locking and unlocking with one hand. When the first connecting end 100 is inserted into the second connecting end 200, the locking rod 260, which passes through the through groove 211, can automatically and precisely engage with the locking groove 111e formed by the first protrusion 111c and the second protrusion 111d under the continuous pushing force applied by the first locking ring 270 (through the first elastic member 241), thus locking the rod 260. When unlocking, only one hand is needed to overcome the pre-tightening force of the first elastic member 241 to separate the locking groove 111e and the locking rod 260, significantly reducing the complexity of operation and the time cost of operation. Furthermore, under the continuous pre-tightening pushing force of the first elastic member 241, the locking rod 260 always fits tightly with the locking groove 111e in the locked position, effectively preventing loosening of the connection even under harsh working conditions such as high-frequency vibration, impact, or fluid pressure pulsation. Furthermore, the design of overcoming the pre-tightening force of the first elastic element 241 during unlocking provides clear operational feedback, effectively preventing unintended unlocking due to accidental contact or collision, and further enhancing operational safety. In the fluid connector 1 of this application, the design of the through groove 211 facing outward and inclined towards the first locking ring 270, and the first elastic element 241 being installed parallel to the first connecting end 100 in the axial direction, causes the locking rod 260 to be subjected to a resultant force towards the inside of the first cylinder 110 (the resultant force of the thrust of the first locking ring 270 and the supporting force of the through groove 211). This not only makes the locking rod 260 more effectively locked, but also allows the first elastic element 241 to be installed in a wider installation position (compared to radial installation parallel to the first connecting end 100). The axial installation of the first elastic element 241 forms a more compact layout, avoids circumferential structural interference, and makes the overall volume of the fluid connector 1 more streamlined; it also supports the use of a first elastic element 241 with a larger stroke and more stable elastic force, ensuring that the pre-tightening thrust on the first locking ring 270 is continuously reliable, further enhancing the stability of the locking rod 260.

[0034] The process of locking the first connecting component 10 and the second connecting component 20 together is as follows: The first connecting end 100 is inserted into the second connecting end 200. The one of the first protrusion 111c and the second protrusion 111d that is closer to the extended end of the first connecting end 100 contacts the locking rod 260 and pushes the locking rod 260 to move outward in the through groove 211. During this process, the locking rod 260 is always subjected to the synergistic force of the first locking ring 270 and the through groove 211. When the first connecting end 100 continues to be inserted until the locking rod 260 and the locking groove 111e are opposite each other, the first connecting end 100 is connected to the limiting part 218 and the first connecting end 100 cannot be inserted further. The locking rod 260 returns to its original position under the synergistic force of the first locking ring 270 and the through groove 211. The locking rod 260 is engaged and locked with the locking groove 111e, and the fluid connector 1 is in the locked position. The process of unlocking the first connecting component 10 and the second connecting component 20 is as follows: the first connecting end 100 is pulled out from the second connecting end 200. The one of the first protrusion 111c and the second protrusion 111d that is closer to the extended end of the first connecting end 100 pushes the locking rod 260 to move outward in the through groove 211. During this process, the locking rod 260 is always subjected to the synergistic force of the first locking ring 270 and the through groove 211. When the first protrusion 111c no longer contacts the locking rod 260, that is, after the locking rod 260 leaves the locking groove 111e, the fluid connector 1 is in the unlocked position. At this time, the locking rod 260 returns to its original position under the synergistic force of the first locking ring 270 and the through groove 211, and the first connecting end 100 can be smoothly pulled out from the second connecting end 200.

[0035] In the fluid connector 1 of this application, the locking / unlocking of the first connecting component 10 and the second connecting component 20, as well as their connection / disconnection, can be independent. The first connecting component 10 and the second connecting component 20 can be locked after they are connected, or they can be locked simultaneously while connected.

[0036] In some embodiments, the first protrusion 111c can be annular (or cylindrical), and the second protrusion 111d can also be annular (or cylindrical), that is, the locking groove 111e formed by the first protrusion 111c and the second protrusion 111d is annular. With this configuration, when the first connecting end 100 and the second connecting end 200 are connected, there is no need to consider the circumferential position, and any part of the locking groove 111e can achieve the function of mating and locking.

[0037] In some embodiments, the first locking ring 270, the first elastic member 241, and the stop protrusion 212 are located on the side of the through groove 211 away from the extended end of the second connecting end 200, that is, the through groove 211 is inclined away from the extended end of the second connecting end 200 in the outward direction. Therefore, the through groove 211 is relatively close to the extended end of the second connecting end 200, meaning the first connecting end 100 does not need to be inserted too deeply into the second connecting end 200, resulting in a shorter installation stroke and greater convenience.

[0038] Please see Figure 2 and Figure 3 The limiting portion 218 is formed by extending inward from the side of the through groove 211 away from the extended end of the second connecting end 200. The first protrusion 111c is closer to the extended end of the first connecting end 100 than the second protrusion 111d. The shape of the limiting portion 218 is adapted to the shape of the first protrusion 111c, and the limiting portion 218 can abut against the first protrusion 111c. Thus, while realizing the limiting function of the limiting portion 218, the second connecting end 200 does not need to have a structure to avoid the first protrusion 111c, so the structure of the second connecting end 200 can be more compact.

[0039] The side of the retaining protrusion 212 facing away from the second cylinder 210 extends toward the first locking ring 270 to form a retaining cylinder 213, and the first elastic member 241 is assembled inside the retaining cylinder 213. This prevents the first elastic member 241 from detaching from the retaining protrusion 212 and the first locking ring 270, meaning the retaining cylinder 213 provides a limiting function for the first elastic member 241. Simultaneously, the retaining cylinder 213 also guides the elastic deformation of the first elastic member 241.

[0040] The outer wall of the second cylinder 210 is recessed inward to form an annular limiting groove 216. The length direction of the limiting groove 216 is parallel to the circumferential direction of the second cylinder 210. The limiting groove 216 is located on the side of the locking rod 260 away from the first locking ring 270. The second connecting assembly 20 includes a retaining ring 251, which is partially sleeved in the limiting groove 216. The second connecting assembly 20 also includes a locking cylinder 280, which is spaced and sleeved at the second connecting end 2. Outside the first locking ring 270, a locking cylinder 280 is sleeved on the end of the retaining cylinder 213 near the first locking ring 270, the first elastic element 241, the first locking ring 270, the locking rod 260, and the limiting groove 216. A second locking ring 281 extends inward from the inner wall of the locking cylinder 280, located between the retaining ring 251 and the locking rod 260, connecting the portion of the retaining ring 251 outside the limiting groove 216 and the side of the locking rod 260 away from the first locking ring 270. The locking cylinder 280 protects the end of the retaining cylinder 213 near the first locking ring 270, the first elastic element 241, the first locking ring 270, the locking rod 260, and the limiting groove 216. Simultaneously, the connection between the locking cylinder 280 and the retaining cylinder 213 enhances the positional stability of these components. Furthermore... The locking cylinder 280 can limit the movement of the locking rod 260 in the axial direction, preventing the locking rod 260 from sliding out of the through groove 211 along its axial direction. The locking rod 260 is connected to the side opposite to the first locking ring 270 by the second locking ring 281, so that the part of the locking rod 260 outside the second connecting end 200 (that is, the two ends of the locking rod 260) is clamped between the first locking ring 270 and the second locking ring 281. Through the double limiting on both sides, the movement of the locking rod 260 in the depth direction of the through groove 211 can be more stable.

[0041] The retaining ring 251 can be C-shaped and can be made of an elastic material (such as silicone, plastic, and / or rubber). The retaining ring 251 is interference-fitted with the limiting groove 216. The C-shaped retaining ring 251 offers efficient installation and removal; its open structure eliminates the need for forced opening, allowing for direct insertion or removal. The C-shaped retaining ring 251 provides stronger sealing reliability; the open design ensures more uniform contact pressure distribution under pre-pressure or medium pressure, resulting in more stable sealing performance in low-pressure scenarios. The C-shaped retaining ring 251 exhibits superior resistance to deformation and extrusion, with higher structural rigidity than the O-shaped retaining ring 251, making it less prone to twisting or overturning within the limiting groove 216, and providing superior anti-extrusion performance under high-pressure conditions. The C-shaped retaining ring 251 offers wider application adaptability, higher tolerance for sealing surface roughness, and can be adapted to slightly rougher contact surfaces, while also exhibiting a longer fatigue life under frequent disassembly and assembly scenarios.

[0042] In some embodiments, the first valve assembly includes an abutment protrusion 120, a valve block 130, and a second elastic member 140 connected in sequence. The valve block 130 is movably connected to the first connecting end 100, and the abutment protrusion 120 is fixedly connected to the first cylinder 110. The second valve assembly includes an abutment block 220, a valve cylinder 230, and a third elastic member 242. One end of the abutment block 220 is located inside the second connecting end 200 with a gap, and the other end of the abutment block 220 is fixedly connected to the second cylinder 210. A liquid passage gap is formed between the abutment block 220 and the second cylinder 210. The valve cylinder 230 is movably sleeved between the second connecting end 200 and the abutment block 220. The third elastic member 242 is sleeved outside the abutment block 220, and both ends of the third elastic member 242 are respectively connected to the end of the abutment block 220 connected to the second cylinder 210 and the valve cylinder 230. The fluid connector 1 has a detached state and a connected state. In the detached state, the valve block 130 is sealed to the first connecting end 100 under the push of the second elastic member 140, and the valve cylinder 230 is sealed to the second connecting end 200 and the abutment block 220 under the push of the third elastic member 242. In the connected state, the first connecting end 100 is inserted into the second connecting end 200 and abuts against the valve cylinder 230. The valve cylinder 230 is located between the two ends of the second cylinder 210 to open the closure of the second connecting end 200. The length of the second elastic member 140 is shorter than its length in the detached state. The abutment block 220 extends into the first cylinder 110 and abuts against the valve block 130. The valve block 130 is located between the two ends of the first cylinder 110 to open the closure of the first connecting end 100. The length of the third elastic member 242 is shorter than its length in the detached state. The first cylinder 110 and the second cylinder 210 are connected.

[0043] When assembling the fluid connector 1 of this application, it is only necessary to insert the first connecting end 100 into the second connecting end 200. The mechanical cooperation between the two can trigger the linkage: the first connecting end 100 pushes the valve cylinder 230 and the abutment block 220 pushes the valve block 130, and simultaneously compresses the first elastic element 241 and the second elastic element 140, so that the valve block 130 opens the closure of the first connecting end 100 and the valve cylinder 230 opens the closure of the second connecting end 200, thereby realizing the connection between the first cylinder 110 and the second cylinder 210. The connection process is simple and convenient. In the detached state of the fluid connector 1, the valve block 130 tightly seals the first connecting end 100 under the action of the first elastic element 241, and the valve cylinder 230 simultaneously seals the second connecting end 200 and the abutment block 220 under the action of the second elastic element 140; thereby preventing fluid leakage when the first connecting assembly 10 and the second connecting assembly 20 are not connected; in the connected state of the fluid connector 1, the fluid only flows in the first cylinder 110 and the second cylinder 210, effectively preventing leakage and improving the safety of the heat dissipation system; the first elastic element 241 and the second elastic element 140 are both in a compressed state, and the elastic restoring force forms a continuous pre-tightening force on the valve block 130 and the valve cylinder 230 respectively, indirectly enhancing the tightness of the fit between the first connecting assembly 10 and the second connecting assembly 20 and improving the connection stability.

[0044] Please see Figure 4 In the above embodiments, after the first cylinder 110 and the second cylinder 210 are connected, the first connecting end 100 and the second connecting end 200 are locked. This can prevent fluid leakage due to structural vibration at the moment when the locking rod 260 and the locking groove 111e are engaged and locked, and also prevent fluid leakage through the through groove 211.

[0045] In some embodiments, the inner wall of the first connecting end 100 is smoothly connected to the inner wall of the valve cylinder 230, and the abutment block 220 is smoothly connected to the valve block 130. In the fluid connector 1 of this application, the adaptable flow channel features formed by the structural differences of the abutment ring, valve block 130, abutment block 220, and valve cylinder 230, combined with the smooth transition connection between the inner wall of the valve cylinder 230 and the inner wall of the first cylinder 110, and the smooth transition connection between the abutment block 220 and the valve block 130, can produce the following significant technical effects: (1) Constructing a smooth and continuous flow channel to maximize the reduction of flow resistance. The abutment ring, as a fixed structure inside the first cylinder 110, connects its inner wall with the inner wall of the first cylinder 110, guiding the fluid to enter the first cylinder 110 stably from upstream; the valve block 130 guides the fluid, and the abutment block 220 and the valve block 130 are smoothly connected to form a continuous flow path, smoothly guiding the fluid into the liquid passage gap of the second cylinder 210; while the smooth transition connection between the inner wall of the valve cylinder 230 and the inner wall of the first cylinder 110 eliminates the structural abrupt change at the docking point of the first connecting component 10 and the second connecting component 20. This multi-component relay smooth flow channel design avoids the generation of eddies and turbulence from the fluid inlet to the outlet, and eliminates the dead volume (i.e., the fluid stagnation area), significantly reducing the flow resistance of the fluid in the fluid connector 1. This not only increases the circulation speed of the fluid, but also reduces the energy consumption of the drive pump in the heat dissipation system, indirectly enhancing the heat dissipation response efficiency of the battery pack. (2) Reduce fluid impact and extend the service life of components. The smooth flow channel and transition connection design significantly reduce the impact of fluid on the internal components of the fluid connector 1, which helps to reduce fatigue wear of the components, extends the sealing performance retention time of the fluid connector 1, and improves the reliability of the fluid connector 1 in long-term outdoor use.

[0046] In some embodiments, the end face of the valve block 130 near the extended end of the first connecting end 100 is parallel to the end face of the extended end of the first connecting end 100, and the end face of the valve cylinder 230 near the extended end of the second connecting end 200 is flush with the end face of the abutment block 220 near the extended end of the second connecting end 200. This enables the first cylinder 110 and the second cylinder 210 to open simultaneously, thereby preventing fluid leakage. At the same time, the conduction stroke of the first cylinder 110 and the second cylinder 210 is relatively short, and the conduction between the two is relatively fast.

[0047] The first cylinder 110 includes a first sub-cylinder 111 and a second sub-cylinder 112. The first sub-cylinder 111 is cylindrical and includes a small-diameter section 111a and a large-diameter section 111b connected to each other. The diameter of the large-diameter section 111b is larger than the diameter of the small-diameter section 111a. One end of the second sub-cylinder 112 is inserted into the large-diameter section 111b, and its end face abuts against the end face of the end of the small-diameter section 111a connected to the large-diameter section 111b. The outer wall of the portion of the second sub-cylinder 112 outside the large-diameter section 111b extends outward to form a limiting protrusion 112a. The end face of the large-diameter section 111b away from the small-diameter section 111a abuts against the limiting protrusion 112a. Based on the above configuration, the connection between the first sub-cylinder 111 and the second sub-cylinder 112 is relatively firm, and axial movement between them is not easily observed. The first sub-cylinder 111 and the second sub-cylinder 112 can be threaded together. Threaded connections simplify connection operations and reduce assembly and maintenance costs; they ensure uniform circumferential stress on components, controllable deformation, and guarantee connection stability and coaxiality; they also enhance sealing reliability and prevent fluid leakage. The outer wall of the end of the second sub-cylinder 112 located outside the first cylinder 110 may be provided with a first threaded structure, which is used for convenient threaded connection with other first flow pipes.

[0048] The abutment protrusion 120 is located inside the second sub-cylinder 112, the valve block 130 is located at the end of the small-diameter section 111a away from the large-diameter section 111b, and the second elastic element 140 is located inside the first sub-cylinder 111 and the second sub-cylinder 112. The above arrangement can make full use of the first sub-cylinder 111 and the second sub-cylinder 112, avoiding structural redundancy and waste.

[0049] The abutting protrusion 120 is formed by extending inward from the inner wall of the second cylindrical body 210, that is, the abutting protrusion 120 and the second cylindrical body 210 are integrally formed. As a result, the connection between the abutting protrusion 120 and the second cylindrical body 210 is tight, and the second cylindrical body 210 can disperse the stress (from the pushing force of the second elastic member 140) on the abutting protrusion 120, thereby improving the abutting effect of the abutting protrusion 120 on the second elastic member 140.

[0050] The valve block 130 includes an integrally formed and interconnected connecting portion 131 and a flow guide portion 132. The connecting portion 131 is used to seal the inner wall of the first connecting end 100. The flow guide portion 132 is configured to first expand and then contract in the direction away from the connecting portion 131, and the size of the end of the flow guide portion 132 connected to the connecting portion 131 is larger than the size of the connecting portion 131. Therefore, the end of the flow guide portion 132 connected to the connecting portion 131 can prevent the valve block 130 from detaching from the first connecting end 100. The shape of the inner wall of the first connecting end 100 is adapted to the shape of the valve block 130 (specifically, the end of the flow guide portion 132 connected to the connecting portion 131 and the connecting portion 131), thereby making the connection between the first connecting end 100 and the valve block 130 more stable.

[0051] The peripheral sidewall of the flow guide section 132 is recessed to form at least two first flow guide regions 132a. The length direction of the at least two first flow guide regions 132a is parallel to the length direction of the flow guide section 132, and the at least two first flow guide regions 132a are arranged circumferentially along the flow guide section 132. The at least two first flow guide regions 132a can guide the fluid and also increase the flow space of the fluid, resulting in better fluid flow.

[0052] The second valve assembly is further away from the extended end of the second connecting end 200 than the through groove 211. The inner wall of the second connecting end 200 is recessed outward to form a first connecting ring groove 214 and a second connecting ring groove 215 arranged at intervals along its axial direction. The length direction of the first connecting ring groove 214 and the second connecting ring groove 215 is parallel to the circumferential direction of the second cylinder 210. The extended end of the second connecting end 200, the through groove 211, the first connecting ring groove 214 and the second connecting ring groove 215 are arranged sequentially. The second connecting assembly 20 includes a first sealing ring 252 and a second sealing ring 253 respectively interference-fitted into the first connecting ring groove 214 and the second connecting ring groove 215. The first sealing ring 252 and the second sealing ring 253 can both be O-rings, which can be made of elastic materials such as silicone, plastic and / or rubber.

[0053] Please see Figure 11 In the detached state of the fluid connector 1, the first sealing ring 252 is located between the through groove 211 and the valve cylinder 230, and the second sealing ring 253 seals the outer wall of the valve cylinder 230. Therefore, fluid leakage is less likely to occur between the outer wall of the valve cylinder 230 and the inner wall of the second connecting end 200. Simultaneously, when the first connecting end 100 is inserted into the second connecting end 200, its outer wall first achieves a sealing connection with the first sealing ring 252 before pushing the valve cylinder 230 to open the communication between the first cylinder 110 and the second cylinder 210. This prevents fluid leakage from the gap between the first connecting end 100 and the second connecting end 200, making the fluid connector 1 of this application safer and more reliable.

[0054] Please see Figure 2 and Figure 3 In the connected state of fluid connector 1, both the first sealing ring 252 and the second sealing ring 253 are sealed to the outer wall of the first cylinder 110. Thus, in the connected state of fluid connector 1, the outer wall of the first connecting end 100 is tightly connected to the inner wall of the second connecting end 200, and fluid will not leak from the gap between the first connecting end 100 and the second connecting end 200.

[0055] The second cylinder 210 includes a liquid-through end (i.e., one end of the second cylinder 210 that is not the second connecting end 200). A liquid-through port 217 is provided on the peripheral sidewall of the liquid-through end, and the liquid-through port 217 connects to a liquid-through gap (formed by the abutment block 220 and the inner wall of the second cylinder 210). There can be multiple liquid-through ports 217, arranged circumferentially along the liquid-through end. The liquid-through end can connect to other second flow channels, and the liquid-through ports 217 enable communication between the second cylinder 210 and other second flow channels, thereby expanding the applicable scenarios of the fluid connector 1 of this application. The outer wall of the liquid-through end can be provided with a second threaded structure for convenient threaded connection with other second flow channels.

[0056] The abutment block 220 includes a connecting part that is fixedly connected to the second cylinder 210, and the liquid inlet 217 is an extension end that is further away from the liquid inlet end than the connecting part.

[0057] In some embodiments, the connecting portion is sealed to the inner wall of the second cylinder 210. Therefore, fluid within the liquid passage gap flows out only from the liquid inlet 217.

[0058] In other embodiments, the abutment block 220 includes an integrally formed first connecting plate 221, a connecting frame 222, and a second connecting plate 223 connected in sequence. The first connecting plate 221 is located within the second connecting end 200 with a gap. The peripheral sidewall of the first connecting plate 221 is used to seal the connecting valve cylinder 230. The two ends of the connecting frame 222 are tapered inwards. The second connecting plate 223 is a connecting part. The peripheral sidewall of the second connecting plate 223 is sleeved on the inner wall of the second cylinder 210. A liquid passage notch 223a is provided on the peripheral sidewall of the second connecting plate 223. This arrangement enables fluid diversion, that is, a part of the fluid in the liquid passage gap flows out from the liquid inlet 217, and another part of the fluid in the liquid passage gap flows out from the end face of the liquid passage end. The integral forming of the abutment block 220 ensures the coaxiality of the first connecting plate 221, the connecting frame 222, the second connecting plate 223, the second cylinder 210, and the valve cylinder 230, ensuring the continuity and smoothness of the flow channel. In addition, the tapered structure of the connecting frame 222 gives it a streamlined profile, which can avoid eddies and dead volumes caused by structural abrupt changes, significantly reduce flow resistance, and improve fluid circulation speed and flow stability.

[0059] One end of the connecting bracket 222, which connects to the second connecting plate 223, is recessed to form a second flow guiding region 222a that smoothly transitions with the liquid passage notch 223a. The liquid inlet 217 is opposite to and communicates with the second flow guiding region 222a. Thus, the flow diversion effect of the fluid is better through the guidance of the second flow guiding region 222a.

[0060] The first elastic element 241, the second elastic element 140, and the third elastic element 242 can all be springs. Sealing rings can be provided between the aforementioned components of the first connecting assembly 10 and the second connecting assembly 20 to enhance the sealing connection between the components. Please refer to the attached drawings for details, which will not be described in detail hereafter.

[0061] The above embodiments are only used to illustrate the present application and are not intended to limit it. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included within the protection scope of the present application.

Claims

1. A fluid connector, characterized in that, Includes a first connecting component and a second connecting component: The first connecting assembly includes a first cylindrical body and a first valve assembly disposed within the first cylindrical body. The first cylindrical body includes a first connecting end, and the outer wall of the first connecting end extends outward to form a first protrusion and a second protrusion arranged at intervals along its axial direction. The first protrusion and the second protrusion cooperate to form a locking groove. The first valve assembly is used to control the flow of the first cylindrical body. The second connecting assembly includes a second cylinder, a second valve assembly, a locking rod, a first locking ring, and a first elastic element. The second cylinder includes a second connecting end, and the second valve assembly is disposed within the second cylinder. A through groove is formed through the second connecting end, the length direction of which is parallel to the circumference of the second cylinder. The locking rod passes through the through groove parallel to the diameter of the second connecting end, with both ends outside the second connecting end and the middle portion inside. The locking rod is movable within the through groove along its depth direction. A retaining protrusion extends outward from the outer wall of the second cylinder. A locking ring is sleeved outside the second connecting end and located between the stop protrusion and the locking rod. The first locking ring abuts against the locking rod, and the through groove is inclined towards the first locking ring in the outward direction. A first elastic member is sleeved outside the second connecting end and located between the stop protrusion and the first locking ring. The first elastic member is used to push the first locking ring away from the stop protrusion. The second valve assembly is used to control the flow of the second cylinder. The outer wall of the first connecting end and the inner wall of the second connecting end are detachably inserted. The inner wall of the second connecting end has a limiting part for preventing the first connecting end from being further inserted. The fluid connector has a locked position and an unlocked position. In the locked position, the first connecting end is inserted into the second connecting end, and the portion of the locking rod located inside the second cylinder is locked in the locking groove under the push of the first locking ring. The limiting part is connected to the first connecting end. In the unlocked position, the first connecting end is inserted into the second connecting end, and the locking rod is located outside the locking groove.

2. The fluid connector according to claim 1, characterized in that, The first locking ring, the first elastic element, and the stop protrusion are located on the side of the through groove opposite to the extended end of the second connecting end; The limiting portion is formed by extending inward from the side of the through groove away from the second connecting end. The first protrusion is closer to the extension end of the first connecting end than the second protrusion. The shape of the limiting portion is adapted to the shape of the first protrusion, and the limiting portion can abut against the first protrusion.

3. The fluid connector according to claim 1, characterized in that, The side of the stop protrusion facing away from the second cylinder extends toward the first locking ring to form a stop cylinder, and the first elastic element is assembled inside the stop cylinder.

4. The fluid connector according to claim 3, characterized in that, The outer wall of the second cylinder is recessed inward to form an annular limiting groove. The length direction of the limiting groove is parallel to the circumference of the second cylinder. The limiting groove is located on the side of the locking rod away from the first locking ring. The second connecting assembly includes a retaining ring, which is partially sleeved in the limiting groove. The second connecting assembly includes a locking cylinder, which is spaced outside the second connecting end. The locking cylinder is sleeved on the end of the retaining cylinder near the first locking ring, the first elastic element, the first locking ring, the locking rod, and the limiting groove. The inner wall of the locking cylinder extends inward to form a second locking ring. The second locking ring is located between the retaining ring and the locking rod and connects the portion of the retaining ring outside the limiting groove and the side of the locking rod away from the first locking ring.

5. The fluid connector according to claim 4, characterized in that, The retaining ring is C-shaped and is made of an elastic material.

6. The fluid connector according to any one of claims 1 to 5, characterized in that, The first valve assembly includes an abutment protrusion, a valve block, and a second elastic element connected in sequence. The valve block is movably connected to the first connecting end, and the abutment protrusion is fixedly connected to the first cylinder. The second valve assembly includes an abutment block, a valve cylinder, and a third elastic element. One end of the abutment block is located inside the second connecting end with a gap, and the other end of the abutment block is fixedly connected to the second cylinder. A liquid passage gap is formed between the abutment block and the second cylinder. The valve cylinder is movably sleeved between the second connecting end and the abutment block. The third elastic element is sleeved outside the abutment block, and the two ends of the third elastic element are respectively connected to the end of the abutment block connected to the second cylinder and the valve cylinder. The fluid connector has a detached state and a connected state. In the detached state, the valve block is sealed to the first connecting end under the push of the second elastic member, and the valve cylinder is sealed to the second connecting end and the abutment block under the push of the third elastic member. In the connected state, the first connecting end is inserted into the second connecting end and abuts against the valve cylinder. The valve cylinder is located between the two ends of the second cylinder to open the closure of the second connecting end. The length of the second elastic member is shorter than its length in the detached state. The abutment block extends into the first cylinder and abuts against the valve block. The valve block is located between the two ends of the first cylinder to open the closure of the first connecting end. The length of the third elastic member is shorter than its length in the detached state. The first cylinder and the second cylinder are connected.

7. The fluid connector according to claim 6, characterized in that, The first cylinder includes a first sub-cylinder and a second sub-cylinder. The first sub-cylinder is cylindrical and includes a small-diameter section and a large-diameter section connected to each other. The diameter of the large-diameter section is larger than the diameter of the small-diameter section. One end of the second sub-cylinder is inserted into the large-diameter section and its end face abuts against the end face of the small-diameter section connected to the large-diameter section. The outer wall of the portion of the second sub-cylinder outside the large-diameter section extends outward to form a limiting protrusion. The end face of the large-diameter section away from the small-diameter section abuts against the limiting protrusion. The abutting protrusion is provided inside the second sub-cylinder, the valve block is provided inside the end of the small diameter section away from the large diameter section, and the second elastic element is provided inside the first sub-cylinder and the second sub-cylinder.

8. The fluid connector according to claim 6, characterized in that, The abutting protrusion is formed by extending inward from the inner wall of the second cylinder; The valve block includes an integrally formed connecting sub-part and a flow guiding sub-part connected to each other. The connecting sub-part is used to seal the inner wall of the first connecting end. The flow guiding sub-part is arranged to first expand and then contract in the direction away from the connecting sub-part. The size of the end of the flow guiding sub-part connected to the connecting sub-part is larger than the size of the connecting sub-part. The peripheral sidewall of the flow guiding sub-part is recessed to form at least two first flow guiding areas. The length direction of the at least two first flow guiding areas is parallel to the length direction of the flow guiding sub-part. The at least two first flow guiding areas are arranged circumferentially along the flow guiding sub-part.

9. The fluid connector according to claim 6, characterized in that, The second valve assembly is further away from the extended end of the second connecting end than the through groove. The inner wall of the second connecting end is recessed outward to form a first connecting ring groove and a second connecting ring groove arranged at intervals along its axial direction. The length direction of the first connecting ring groove and the second connecting ring groove is parallel to the circumferential direction of the second cylinder. The extended end of the second connecting end, the through groove, the first connecting ring groove, and the second connecting ring groove are arranged sequentially. The second connecting assembly includes a first sealing ring and a second sealing ring respectively interference-fitted into the first connecting ring groove and the second connecting ring groove. In the disassembled state, the first sealing ring is located between the through groove and the valve cylinder, and the second sealing ring seals the outer wall of the valve cylinder. In the connected state, both the first sealing ring and the second sealing ring seal the outer wall of the first cylinder. The second cylinder includes a liquid-passing end, and a liquid-passing port is provided on the peripheral side wall of the liquid-passing end. The liquid-passing port communicates with the liquid-passing gap. The abutment block includes a connecting part that is fixedly connected to the second cylinder. The liquid-passing port is further away from the extension end of the liquid-passing end than the connecting part.

10. The fluid connector according to claim 9, characterized in that, The abutment block includes an integrally formed first connecting plate, a connecting frame, and a second connecting plate connected in sequence. The first connecting plate is located inside the second connecting end with a gap. The peripheral sidewall of the first connecting plate is used to seal and connect the valve cylinder. The two ends of the connecting frame are gradually tapered inward. The second connecting plate is the connecting part. The peripheral sidewall of the second connecting plate is sleeved on the inner wall of the second cylinder. A liquid passage notch is formed on the peripheral sidewall of the second connecting plate. The end of the connecting frame connected to the second connecting plate is recessed to form a second flow guiding area that smoothly transitions and connects with the liquid passage notch. The liquid inlet is opposite to and communicates with the second flow guiding area.

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