Fluid coupling component and fluid coupling device
By setting guide surfaces and guide surfaces in the fluid coupling device, the problems of fluid turbulence and pressure drop are solved, the service life and reliability of the fluid coupling components are improved, and stable fluid transmission is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-17
AI Technical Summary
Existing fluid coupling devices are prone to fluid turbulence and pressure drop during the separation of the plug and socket, and inaccurate valve body movement direction leads to poor sealing.
A fluid coupling component is designed to ensure stable axial movement of the valve body during opening and closing by setting guide surfaces and guide surfaces on the housing and valve body, and to improve sealing performance and reduce turbulence and pressure drop by reasonably setting the included angle and limiting groove.
It achieves efficient guidance of fluid coupling components during the opening and closing process, improves service life and reliability, reduces fluid turbulence and pressure drop, and ensures sealing performance.
Smart Images
Figure CN224003345U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of fluid control technology, and in particular to a fluid coupling component and a fluid coupling device. Background Technology
[0002] Fluoroplastics are widely used in fluid transport systems for high-purity chemicals and semiconductor manufacturing due to their excellent corrosion resistance and chemical stability. To rapidly transfer fluids, fluid coupling devices are typically used to connect two containers holding semiconductor fluids; these containers include tank trucks and buffer tanks.
[0003] Fluid coupling devices typically consist of a socket and a plug. The plug and / or socket contain a housing and a valve body. When the socket and plug are separated, a seal is required between the housing and the valve body to prevent leakage from the container holding the semiconductor fluid. However, in practice, operators have found that during the separation of the plug and socket, fluid continues to flow and impact the valve body. Consequently, the valve body's movement during the closing process is not in the intended direction, resulting in a failure to form a proper seal even after the valve body comes into contact with the contact surface. Furthermore, those skilled in the art have long sought to address fluid turbulence and pressure drop issues within the internal structure of the coupling device, but no solution has been found. Therefore, this application is proposed. Utility Model Content
[0004] This application provides a fluid coupling component and a fluid coupling device that can improve fluid flow characteristics and reduce the occurrence of turbulence and pressure drop in the fluid.
[0005] To achieve the above objectives, the main technical solutions adopted in this application include:
[0006] In a first aspect, this application provides a fluid coupling component, a housing having a receiving cavity; the receiving cavity is axially open at one end to form a valve port, and a contact surface is formed on the inner wall of a portion of the receiving cavity, the contact surface being located axially inside the valve port; a valve body movable within the receiving cavity along the axial direction of the fluid coupling component, the valve body having a liquid inlet penetrating its body; a sealing portion disposed on the outer surface of the valve body and closer to the valve port than the liquid inlet; a spring for applying force to the valve body in the valve port closing direction; the housing further includes a first guide surface, the valve port being surrounded and formed by the first guide surface; the valve body also has an axially extending second guide surface;
[0007] When the fluid coupling component is in the closed state, the sealing part abuts against the contact surface, the valve port is closed, and the first guide surface and the second guide surface are correspondingly arranged in the axial direction of the fluid coupling component. When the fluid coupling component is switched between the open and closed states, the first guide surface and the second guide surface can be axially slidably connected. When the fluid coupling component is in the open state, the gap between the first guide surface and the second guide surface forms a first port, and the fluid forms a fluid passage between the valve port, the first port, and the liquid inlet. The fluid passage includes a first guide surface on the valve body and a second guide surface on the sealing part. The first guide surface is an annular conical surface, and the second guide surface is located on the side of the first guide surface near the first port. The included angle between the first guide surface and the second guide surface is an obtuse angle. When the fluid coupling component is in the liquid outlet state, the first guide surface guides the fluid to flow to the second guide surface, and the second guide surface guides the fluid into the first port.
[0008] The fluid coupling component proposed in this application, by providing a first guide surface on the outer shell and a second guide surface on the valve body, achieves efficient guiding of the valve body during opening and closing without sacrificing the volume of the coupling device and the cross-sectional area of the flow channel. When switching between opening and closing states, the corresponding first and second guide surfaces can slide and connect axially, ensuring that the valve body maintains stable and accurate axial movement during operation, avoiding the swaying, jamming, or offset phenomena that may occur in traditional fluid coupling components. This design not only improves the service life of the fluid coupling component but also significantly enhances its reliability under complex working conditions. At the same time, by providing an annular conical first guide surface on the valve body and a second guide surface on the sealing part, efficient guidance of fluid is achieved inside the fluid coupling component. When the fluid coupling component is in the liquid discharge state, the first guide surface can smoothly guide the fluid to the second guide surface, while the second guide surface further guides the fluid into the first port, thereby avoiding the second guide surface and preventing the presence of the second guide surface from adversely affecting the flow of the fluid product.
[0009] Optionally, the valve body is provided with a limiting groove, and the sealing part is an O-ring installed in the limiting groove; the limiting groove has an opening, an inner side, an outer side, and a bottom surface; and the inner side gradually approaches the central axis of the fluid coupling component as it extends from the opening to the bottom surface.
[0010] When the sealing part is placed in the limiting groove, the inclined shape of the inner side can limit the O-ring, so that the O-ring can be stably kept in the limiting groove even under the impact of fluid, thus improving the sealing stability of the valve body.
[0011] Optionally, the inner and outer surfaces gradually move away from the central axis of the limiting groove as they extend from the opening towards the bottom surface; and the O-ring is interference-fitted with the limiting groove, and the area of the bottom surface is greater than the maximum cross-sectional area of the O-ring.
[0012] In the above scheme, the extension directions of the inner and outer sides form a conical groove with an opening area smaller than the bottom area, combined with the bottom area being larger than the maximum cross-sectional area of the O-ring. This means that the O-ring, which is interference-fitted with the limiting groove, deforms more within the limiting groove near the bottom. The part of the O-ring located outside the opening remains a highly rounded arc, thereby reducing the probability of deformation of the second guide surface when the valve port is open. This also makes the shape of the second guide surface more controllable, thereby improving the drainage effect and better guiding the flow of fluid.
[0013] Optionally, if the included angle between the first guide surface and the second guide surface is α, then 115°≤α≤155°, the included angle between the first guide surface and the abutment surface is within 10°, and the guide surface of the limiting groove is axially inclined relative to the fluid coupling component.
[0014] In the above scheme, by reasonably setting the angle between the first guide surface and the second guide surface, the turbulence and resistance of the fluid during the fluid flow process can be reduced between the first guide surface and the second guide surface, and the fluid can be guided to move towards the first opening. At the same time, the angle between the first guide surface and the abutting surface is within 10°, which can avoid interference between the first guide surface and the abutting surface, so that the sealing part protruding from the first guide surface can better abut and seal with the abutting surface, and prevent fluid leakage.
[0015] Optionally, an annular transition surface is formed between the second guide surface and the opening, and the angle between the transition surface and the inner surface is greater than 75°.
[0016] In the above scheme, the presence of the transition surface can prevent the O-ring from directly contacting the second guide surface, thereby preventing the O-ring from getting stuck in the gap between the first and second guide surfaces during the valve closure process, thus avoiding affecting the sealing of the subsequent housing and valve body, and also avoiding affecting the flow guiding effect of the second guide surface; at the same time, the angle setting of more than 75° can prevent the O-ring from being damaged due to the transition surface and the inner surface being too sharp.
[0017] Optionally, the sealing part is a sealing protrusion integrally formed on the valve body, and the second guide surface is the side surface of the sealing protrusion near the first guide surface.
[0018] In the above scheme, the sealing part is a sealing protrusion on the valve body, which affects the flow of fluid. The second guide surface is the side surface of the sealing protrusion close to the first guide surface. The first and second guide surfaces work together to change the flow direction of the fluid, allowing the fluid to move along a relatively orderly path, reducing friction and collision between the fluid and the valve body itself, thereby reducing turbulence and pressure drop.
[0019] Optionally, the valve body includes an annular sidewall, and a liquid passage cavity is formed between the annular sidewall and the inner wall of the outer shell. The liquid passage cavity is located on the side of the second guide surface away from the valve port, and the liquid passage cavity is directly connected to the liquid passage port.
[0020] The fluid coupling component has a head located on the second guide surface near the valve port side, and this head is provided with an annular third guide surface, wherein:
[0021] As the annular sidewall extends from the end furthest from the valve port to the end closest to the valve port, it gradually tilts radially toward the third guide surface of the fluid coupling component.
[0022] In the above scheme, the fluid passage cavity and the third guide surface are located on both sides of the first guide surface and the second guide surface, respectively. When the fluid flows in reverse, the fluid guided by the third guide surface can reduce contact with the second guide surface, thereby reducing fluid turbulence and pressure drop caused by interference from the sealing part.
[0023] Meanwhile, the inclined annular sidewall allows the opening of the liquid passage chamber near the third guide surface to be larger, better receiving liquid from the third guide surface and guiding the liquid into the liquid passage port.
[0024] Optionally, the liquid inlets are multiple inlets arranged circumferentially on the annular sidewall; in the axial direction perpendicular to the fluid coupling component, the cross-sectional area of the liquid passage chamber gradually decreases from the side closer to the valve port to the side farther away from the valve port.
[0025] In the above scheme, more liquid inlets can reduce the pressure drop of the fluid in both forward and reverse flow. By changing the cross-sectional area of the liquid inlet cavity, combined with the guiding effect of the annular sidewall, the fluid can better collect liquid and enter the liquid inlet when flowing in reverse.
[0026] Optionally, the fluid coupling component further includes a fixed seat, which is axially positioned at the end of the receiving cavity away from the valve port, and the two ends of the spring abut against the fixed seat and the valve body, respectively.
[0027] In the above scheme, the fixed seat is axially fixed at the end of the receiving cavity away from the valve port, providing stable support for the overall structure of the fluid coupling component. The two ends of the spring abut against the fixed seat and the valve body respectively. When the valve body overcomes the elastic force to open the fluid coupling component, the spring is compressed, and the fixed seat can stably withstand the reaction force of the spring. When the valve body is closed, the spring, supported by the fixed seat, pushes the valve body back to the valve port position to seal the valve port.
[0028] Secondly, this application also provides a fluid coupling device, including a plug, a socket, and a locking mechanism for keeping the two in a coupled state;
[0029] The plug and socket have the aforementioned fluid coupling components, and the valve body further includes a head located on the second guide surface near the valve port side. When the plug and socket are coupled, the valve body heads of the plug and socket are arranged to abut against each other to connect the fluid passages of the plug and socket.
[0030] In the above scheme, after the fluid coupling component is connected to the plug and socket, the plug is inserted into the socket, and the locking structure is fitted onto the plug and socket to fix the plug and socket. When the plug and socket are in a coupled state, the plug and socket form a fluid passage to realize the transmission of fluid. Attached Figure Description
[0031] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0032] Figure 1 This is a schematic diagram of the fluid coupling component in Embodiment 1, wherein the fluid coupling component is in the open state;
[0033] Figure 2 This is a schematic diagram of the fluid coupling component in Embodiment 1, wherein the fluid coupling component is in a closed state;
[0034] Figure 3 This is a schematic diagram of the fluid coupling device in Example 1;
[0035] Figure 4 This is a schematic diagram of the installation structure of the socket and locking mechanism in the fluid coupling device in Embodiment 1;
[0036] Figure 5 for Figure 1 Enlarged view of the structure near the central O-ring;
[0037] Figure 6This is a schematic diagram of the internal structure of the fluid coupling component in Embodiment 1, wherein the fluid coupling component is in the open state;
[0038] Figure 7 This is a schematic diagram of the fluid coupling component in Example 2;
[0039] Figure 8 This is a schematic diagram of the coupling device in Embodiment 3.
[0040] [Explanation of Labels in the Attached Image]
[0041] 1: Outer shell; 11: Abutting surface; 12: First guide surface; 13: Valve port; 14: Socket; 141: Support part; 15: Plug; 16: Fluid passage; 161: Liquid passage chamber; 162: Liquid flow chamber; 17: First port;
[0042] 2: Valve body; 21: Liquid inlet; 22: Second guide surface; 23: First guide surface; 24: Limiting groove; 241: Inner side surface; 242: Bottom surface; 243: Outer side surface; 25: Third guide surface; 26: Annular sidewall; 27: Transition surface;
[0043] 3: Sealing part; 31: Second guide surface;
[0044] 4: Spring;
[0045] 5: Fixture;
[0046] 6: Lock down the organization. Detailed Implementation
[0047] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. 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.
[0048] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.
[0049] In this application, the reference to "embodiment" means that a specific 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 mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.
[0050] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0051] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.
[0052] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).
[0053] Example 1:
[0054] refer to Figures 1 to 6 This application provides a coupling device including a plug 15, a socket 14, and a locking mechanism 6 for holding the two in a coupled state; the plug 15 and the socket 14 have fluid coupling components, and the valve body 2 also includes a head located on the second guide surface 22 near the valve port side. When the plug 15 and the socket 14 are coupled, the valve ports 13 of the plug 15 and the socket 14 are connected, and the heads of the valve bodies 2 of the plug 15 and the socket 14 are arranged to abut against each other so that the fluid passages in the plug 15 and the socket 14 are connected.
[0055] The fluid coupling component includes a housing 1, a valve body 2, a spring 4, and a mounting base 5; wherein,
[0056] The outer shell 1 is hollow inside and has a receiving cavity. One end of the receiving cavity is connected to a pipe and the other end forms a valve port 13. The receiving cavity also has a first guide surface 12 and an abutment surface 11. The valve port 13 is formed by the first guide surface 12 and the abutment surface 11 is located on the axial inner side of the valve port 13.
[0057] The valve body 2 is disposed inside the receiving cavity and can move along the axial direction of the fluid coupling component in the receiving cavity; the valve body 2 has a liquid inlet 21 through the valve body 2, a second guide surface 22 and a first guide surface 23.
[0058] The sealing part 3 is located on the outer surface of the valve body 2 near the first guide surface 23, and is closer to the valve port 13 than the liquid inlet 21.
[0059] The fixed seat 5 and the spring 4 are also disposed in the receiving cavity. The fixed seat 5 is axially limited at the end of the receiving cavity away from the valve port 13. Specifically, the fixed seat 5 is threadedly connected to the inner wall of the outer shell 1. The two ends of the spring 4 abut against the fixed seat 5 and the valve body 2 respectively. The spring 4 is a compression spring that is always in a compressed state and is used to apply force to the valve body 2 in the closing direction of the valve port 13. It should be noted that the elastic coefficients of the springs 4 in the plug 15 and the socket 14 in this embodiment are the same or similar. When the socket 14 and the plug 15 abut against each other, the valve body 2 in the plug 15 and the socket 14 can move away from the valve port 13 and form a fluid passage between the valve body 2 and the outer shell 1.
[0060] like Figure 2 As shown, when the fluid coupling component is in the closed state, the sealing part 3 abuts against the contact surface 11 under the action of the spring 4, and the valve port 13 is closed. The first guide surface 12 and the second guide surface 22 are correspondingly arranged in the axial direction of the fluid coupling component. This corresponding arrangement is beneficial to realize the axial sliding connection of the first guide surface 12 and the second guide surface 22 as soon as the valve port 13 is opened.
[0061] When the fluid coupling component is in the open / closed state switching, the first guide surface 12 and the second guide surface 22 can be axially slidably connected.
[0062] like Figure 1 As shown, when the fluid coupling component is in the open state, the gap between the first guide surface 12 and the second guide surface 22 forms a first port 17 (dashed part), and the fluid forms a fluid passage between the valve port 13, the first port 17 and the liquid inlet 21. In this embodiment, the reason for the fluid coupling component to be open is that the valve body 2 in the plug 15 and the socket 14 abuts against each other to make the valve body 2 move away from the valve port 13, thereby forming a fluid passage between the plug 15 and the socket 14. Of course, in another embodiment, the fluid coupling component can also open the valve port 13 by fluid pressure.
[0063] like Figure 1 and 6As shown, the fluid passage includes a first guide surface 23 on the valve body 2 and a second guide surface 31 on the sealing part 3. The first guide surface 23 is an annular conical surface, and the second guide surface 31 is located on the side of the first guide surface 23 near the first port 17. The included angle between the first guide surface 23 and the second guide surface 31 is an obtuse angle. When the fluid coupling component is in the liquid discharge state, the first guide surface 23 guides the fluid to flow to the second guide surface 31, and the second guide surface 31 guides the fluid into the first port 17.
[0064] Furthermore, for a single fluid coupling component, there are two states when the fluid coupling component is open: one is the liquid outlet state, and the other is the liquid inlet state. When the fluid coupling component is in the liquid outlet state, the fluid enters the liquid passage chamber 161 from the liquid passage port 21, passes through the first guide surface and the second guide surface in the liquid passage chamber 162, and then enters the first port 17 and the valve port 13 in sequence to exit the fluid coupling component. This flow direction is referred to as "forward" in the following text, and the flow direction is as follows: Figure 6 As indicated by the middle arrow, the first guide surface 23 and the second guide surface 31 guide the fluid as it flows from the end away from the valve port 13 toward the valve port 13. When the fluid coupling component is in the liquid inlet state, the flow direction is referred to as "reverse" below. Specifically, when the flow direction is reversed, the fluid enters the fluid coupling component from the valve port 13, and after being guided by the third guide surface 25, it passes through the liquid chamber 162 and the liquid passage chamber 161 before entering the liquid passage port 21. The head of the valve body 2 refers to the solid part surrounded by the annular third guide surface 25.
[0065] Through the above technical solution, the fluid coupling component achieves efficient guiding function of the valve body during opening and closing. At the same time, the first guide surface 12 and the second guide surface 22 are correspondingly set when the valve port 13 is closed, so that the corresponding first guide surface 12 and the second guide surface 22 can be axially slidably connected when switching between opening and closing states. This ensures that the valve body 2 can maintain stable and accurate axial movement when the sealing part 3 is close to the contact surface 11, avoiding the swinging, jamming or displacement phenomena that may occur in traditional fluid coupling components. This design not only improves the service life of the fluid coupling component, but also significantly enhances its reliability under complex working conditions. At the same time, by setting an annular conical first guide surface 23 on the valve body 2 and a second guide surface 31 on the sealing part 3, efficient guidance of fluid is achieved inside the fluid coupling component. When the fluid coupling component is in the liquid discharge state, the first guide surface 23 can smoothly guide the fluid to the second guide surface 31, and the second guide surface 31 further guides the fluid into the first port 17, thereby avoiding the second guide surface 22 and avoiding the influence of the second guide surface 22 on the fluid flow, thus forming a stable fluid passage.
[0066] It should be noted that while the cooperation between the second guide surface 22 and the first guide surface 12 can improve the stability of the fluid coupling component during opening and closing, it also increases the instability of the fluid flow direction, disrupts the fluid flow path, and increases turbulence and pressure drop. Especially in high-flow or high-pressure applications, the presence of the second guide surface 22 reduces fluid transmission efficiency. In this application, the design of the first guide surface 23 and the second guide surface 31 guides the fluid smoothly into the first port 17, preventing the fluid from directly impacting the second guide surface 31. This guiding effect reduces the disruption of the fluid flow path, thereby reducing turbulence and pressure drop, and ultimately improving fluid transmission efficiency.
[0067] Furthermore, such as Figure 1 and 5 As shown, the valve body 2 is provided with a limiting groove 24, and the sealing part 3 is an O-ring installed in the limiting groove 24. The limiting groove 24 has an opening, an inner side 241, an outer side 243, and a bottom surface 242. The inner side 241 gradually approaches the central axis of the fluid coupling component as it extends from the opening to the bottom surface 242. The inner side 241 and the outer side 243 gradually move away from the central axis of the limiting groove 24 as they extend from the opening to the bottom surface 242. The O-ring is interference-fitted with the limiting groove 24, and the area of the bottom surface 242 is larger than the maximum cross-sectional area of the O-ring. That is, the limiting groove 24 is a conical groove with a large area on the bottom surface 242 and a small area on the opening side, and the axial direction of the limiting groove 24 is at an angle to the axial direction of the fluid coupling component, thereby forming an "annular conical surface".
[0068] In this embodiment, the sealing part 3 is an O-ring installed in the limiting groove 24, and the portion of the O-ring protruding from the limiting groove 24 facing the first guide surface 23 forms a second guide surface 31; in this embodiment, the angle between the first guide surface 23 and the second guide surface 31 is measured as follows: the extension line of the first guide surface 23 forms an intersection point on the circumference of the O-ring, and the angle between the tangent at the intersection point and the first guide surface 23 is the angle between the first guide surface 23 and the second guide surface 31.
[0069] When the sealing part 3 is placed in the limiting groove 24, the inclined shape of the inner side 241 can limit the sealing part 3, so that the sealing part 3 can be stably kept in the limiting groove 24 even under the impact of fluid, thus improving the sealing stability of the valve body 2. In addition, the extension direction of the inner side 241 and the outer side 243 is such that the area of the opening is smaller than the area of the bottom surface 242. Combined with the fact that the area of the bottom surface 242 is larger than the maximum cross-sectional area of the O-ring, it means that the O-ring that is interference-fitted with the limiting groove 24 can accommodate more deformation of the O-ring in the limiting groove 24 near the bottom surface 242. The part of the O-ring located outside the opening is still a highly rounded arc, thereby reducing the probability of deformation of the second guide surface 31 when the valve port 13 is in the open state. It also makes the shape of the second guide surface 31 more controllable, so as to improve the drainage effect and better guide the flow of fluid.
[0070] like Figure 5 As shown, the included angle between the first guide surface 23 and the second guide surface 31 is α, then 115°≤α≤155°, the included angle between the first guide surface 23 and the abutment surface 11 is within 10°, and the first guide surface is inclined relative to the axial direction of the fluid coupling component.
[0071] By reasonably setting the angle between the first guide surface 23 and the second guide surface 31, the turbulence and resistance during fluid flow between the first guide surface 23 and the second guide surface 31 can be reduced, and the fluid can be guided to move towards the first opening 17. Specifically, in this embodiment, the angle α is 130°. At the same time, the angle between the first guide surface 23 and the abutment surface 11 is within 10°, which can avoid interference between the first guide surface 23 and the abutment surface 11, and allow the sealing part 3 protruding from the first guide surface 23 to better abut and seal with the abutment surface 11, preventing fluid leakage. Specifically, in this embodiment, the first guide surface 23 and the abutment surface 11 are arranged parallel to each other, completely avoiding interference.
[0072] Furthermore, such as Figure 5 As shown, an annular transition surface 27 is formed between the second guide surface 22 and the opening, and the angle between the transition surface 27 and the inner surface 241 is greater than 75°.
[0073] The presence of the transition surface 27 prevents the O-ring from directly contacting the second guide surface 22, thus preventing the O-ring from getting stuck in the gap between the first guide surface 12 and the second guide surface 22 during the valve port 13 closing process. This avoids affecting the sealing of the subsequent housing 1 and valve body 2, and also avoids affecting the flow guiding function of the second guide surface 22. At the same time, the angle setting of more than 75° can prevent the O-ring from being damaged due to excessive sharpness between the transition surface 27 and the inner surface 241.
[0074] Furthermore, such as Figure 1As shown, the valve body 2 includes an annular sidewall 26, which forms a liquid passage cavity 161 between the annular sidewall 26 and the inner wall of the outer shell 1. The liquid passage cavity 161 is located on the side of the second guide surface 31 away from the valve port 13, and the liquid passage cavity 161 is directly connected to the liquid passage port 21. The fluid coupling component has a head located on the side of the second guide surface 22 near the valve port 13, and the head is provided with an annular third guide surface 25. As the annular sidewall 26 extends from the end away from the valve port 13 to the end near the valve port 13, it gradually tilts in the radial direction of the fluid coupling component toward the third guide surface 25.
[0075] In the above scheme, the liquid passage cavity 161 and the third guide surface 25 are located on both sides of the first guide surface 23 and the second guide surface 31, respectively. When the fluid flows in reverse, the fluid guided by the third guide surface 25 can reduce contact with the sealing part 3, thereby reducing the fluid turbulence and pressure drop problems caused by the interference of the sealing part 3. At the same time, the inclined annular sidewall 26 can make the opening of the liquid passage cavity 161 on the side near the third guide surface 25 larger, better receive the liquid from the third guide surface 25, and guide the liquid into the liquid passage port 21.
[0076] Furthermore, the liquid inlets 21 are multiple in number arranged circumferentially on the annular sidewall 26; in the direction perpendicular to the axial direction of the fluid coupling component, the cross-sectional area of the liquid passage chamber 162 gradually decreases from the side closer to the valve port 13 to the side farther away from the valve port 13. More liquid inlets 21 can reduce the pressure drop of the fluid in both forward and reverse flow. Through the change in the cross-sectional area of the liquid passage chamber 161, combined with the guiding effect of the annular sidewall, the fluid can better collect and enter the liquid inlets 21 during reverse flow.
[0077] It should be noted that, as Figure 1 As shown, in this embodiment, the outer wall of the valve body 2, from the end furthest from the valve port 13 towards the valve port 13, comprises: an annular sidewall 26, a first guide surface 23, a transition surface 27, a second guide surface 22, and a third guide surface 25. The second guide surface 31 is located between the first guide surface 23 and the transition surface 27. A liquid passage cavity 161 is formed between the annular sidewall 26 and the inner wall of the outer shell 1. A liquid flow cavity 162 is formed between the first guide surface 23, the transition surface 27, and the second guide surface 22 and the inner wall of the outer shell 1. The boundary between the liquid flow cavity 162 and the liquid passage cavity is as follows: Figure 1 As shown by line O in the diagram. When valve port 13 is open, the first port 17 is an annular gap between the second guide surface 22 and the first guide surface 12. Furthermore, the first guide surface 12, the second guide surface 22, the first guide surface 23, the abutment surface 11, and the annular sidewall 26 are all annularly arranged.
[0078] Example 2:
[0079] like Figure 7As shown, the results of this embodiment are basically the same as those of Embodiment 1, except that the sealing part 3 in this embodiment is a sealing protrusion integrally formed on the valve body 2, and the second guide surface 31 is the side surface of the sealing protrusion near the first guide surface 23. In this embodiment, the sealing part 3 is a sealing protrusion formed on the valve body 2, which will affect the flow of fluid, and the second guide surface 31 is the side surface of the sealing protrusion near the first guide surface 23. The first guide surface 23 and the second guide surface 31 work together to change the flow direction of the fluid, so that the fluid can move along a relatively orderly path, reducing the friction and collision between the fluid and the valve body 2 itself, thereby reducing the turbulence of the fluid and thus reducing the pressure drop. It should be noted that the second guide surface 31 in this embodiment is an inclined surface, and in another embodiment, the second guide surface 31 of the sealing protrusion can also be an arc-shaped surface.
[0080] Example 3:
[0081] like Figure 8 As shown, in this embodiment, only one of the plug 15 and socket 14 has a fluid coupling component structure, while the other has a support portion 141 that is axially limited and connected to the outer shell. A flow channel through which fluid can pass is formed on the periphery of the support portion. When the plug 15 abuts against the socket 14, the support portion abuts against the valve body 2, causing the valve body 2 to move away from the valve port 13, thereby opening the valve port 13 to form a fluid passage. Those skilled in the art can manually open the valve in the fluid passage to allow fluid to pass through the fluid passage.
[0082] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0083] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.
[0084] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.
[0085] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.
Claims
1. A fluid coupling component, comprising: a housing having a receiving cavity, the receiving cavity being open at one axial end to form a valve port, and a portion of the inner wall of the receiving cavity forming an abutting surface, the abutting surface being located axially inward of the valve port; a valve body movable in the receiving cavity along the axial direction of the fluid coupling component, the valve body having a fluid passage extending through the body of the valve body; a sealing portion provided on the outer surface of the valve body and closer to the valve port than the fluid passage; a spring for applying a force to the valve body in the direction of closing the valve port; characterized in that: the housing further comprises a first guide surface, and the valve port is formed by the first guide surface; the valve body further comprises an axially extending second guide surface; when the fluid coupling component is in a closed state, the sealing portion abuts against the abutting surface, and the first guide surface and the second guide surface are arranged in correspondence in the axial direction of the fluid coupling component; when the fluid coupling component is switched between the closed state and an open state, the first guide surface and the second guide surface are in axially sliding fit; when the fluid coupling component is in an open state, a gap between the first guide surface and the second guide surface forms a first passage, and a fluid passage is formed between the valve port, the first passage and the fluid passage; wherein the fluid passage comprises a first guide surface provided on the valve body and a second guide surface provided on the sealing portion, the first guide surface is an annular tapered surface, the second guide surface is located on the side of the first guide surface closer to the first passage, an included angle between the first guide surface and the second guide surface is obtuse, and when the fluid coupling component is in a fluid outlet state, the first guide surface guides the fluid to the second guide surface, and the second guide surface guides the fluid into the first passage.
2. The fluid coupling member of claim 1, wherein, a limiting groove is provided on the valve body, and the sealing portion is an O-ring installed in the limiting groove; the limiting groove has an opening, an inner side surface, an outer side surface and a bottom surface; and the inner side surface gradually approaches the central axis of the fluid coupling component during extension from the opening to the bottom surface.
3. The fluid coupling member of claim 2, wherein, the inner side surface and the outer side surface gradually move away from the central axis of the limiting groove during extension from the opening to the bottom surface; and the O-ring is in interference fit with the limiting groove, and the area of the bottom surface is greater than the maximum cross-sectional area of the O-ring.
4. The fluid coupling member of claim 3, wherein, the included angle between the first guide surface and the second guide surface is α, and 115°≤α≤155°; the included angle between the first guide surface and the abutting surface is within 10°, and the first guide surface is arranged to be inclined relative to the axial direction of the fluid coupling component.
5. The fluid coupling member of claim 2, wherein, a transition surface in the form of an annulus is formed between the second guide surface and the opening, and the included angle between the transition surface and the inner side surface is greater than 75°.
6. The fluid coupling member of claim 1, wherein, the sealing portion is a sealing protrusion integrally provided on the valve body, and the second guide surface is a side surface of the sealing protrusion closer to the first guide surface.
7. The fluid coupling member of claim 1, wherein, the valve body comprises an annular side wall, and a fluid passage cavity is formed between the annular side wall and the inner wall of the housing, the fluid passage cavity is located on the side of the second guide surface away from the valve port, and the fluid passage cavity directly communicates with the fluid passage; the fluid coupling component has a head portion on the side of the second guide surface closer to the valve port, and the head portion is provided with an annular third guide surface; and the annular side wall is gradually inclined towards the third guide surface in the radial direction of the fluid coupling component during extension from the end away from the valve port to the end closer to the valve port.
8. The fluid coupling member of claim 7, wherein, The liquid passage is a plurality of circumferential arrangements on the annular side wall; the valve body and the inner wall of the shell are further provided with a liquid passing cavity, in the axial direction perpendicular to the fluid coupling component, the cross-sectional area of the liquid passing cavity gradually decreases from the side close to the valve port to the side away from the valve port.
9. The fluid coupling member of claim 1, wherein, The fluid coupling component further comprises a fixing seat which is axially limited and arranged at the end of the accommodating cavity away from the valve port, and the two ends of the spring abut against the fixing seat and the valve body respectively.
10. A fluid coupling device, characterized by, The plug, the socket and a locking mechanism for maintaining the two in a coupled state; The plug and the socket have the fluid coupling component as claimed in any one of claims 1-9, and the valve body further comprises a head located at the side close to the valve port of the second guide surface, and when the plug and the socket are coupled, the valve body heads of the plug and the socket are arranged to abut against each other to make the fluid passages in the plug and the socket communicate.