Liquid connector

Abstract

This utility model discloses a liquid connector, which includes a male connector and a female connector that plugs into the male connector. The inner wall of the female connector facing the male connector has a first annular groove, which includes a connecting surface connected to the inner wall of the female connector. The connecting surface has a second annular groove and a third annular groove radially. The female connector includes: a clamping member fixedly installed in the first annular groove, the inner wall of which has a fourth annular groove; a first sealing member disposed in the second annular groove, sealingly connected to the male and female connectors; a second sealing member disposed in the third annular groove, sealingly connected to the female connector and the clamping member; and a third sealing member disposed in the fourth annular groove, sealingly connected to the male connector and the clamping member. This utility model improves the reliability and service life of the liquid connector and reduces the risk of complete failure of the entire liquid connector.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic system technology, and specifically relates to a hydraulic connector. Background Technology

[0002] Liquid fittings are core components of pipeline connections, and their sealing performance is crucial. Liquid fittings typically consist of a male and a female connector that plug into each other, connecting to two different pipelines. When media flow is required between the two pipelines, this is achieved by plugging the male and female connectors together. Currently, many conventional liquid fittings only have a single axial or radial seal at the connection point between the male and female connectors. If this single seal is susceptible to damage from assembly, surface defects, material aging (loss of elasticity, cracking), temperature fluctuations, or harsh operating conditions such as high pressure and vibration, the liquid fitting may leak or even fail completely, reducing its sealing reliability and service life.

[0003] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a liquid connector.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a liquid connector that improves the reliability and service life of the liquid connector and reduces the risk of complete failure of the entire liquid connector.

[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0007] A liquid connector, the liquid connector comprising:

[0008] Male connector;

[0009] A female connector is inserted into the male connector. The inner wall of the female connector facing the male connector has a first annular groove. The first annular groove includes a connecting surface connected to the inner wall of the female connector. The connecting surface has a second annular groove and a third annular groove radially arranged. The female connector includes:

[0010] A clamping component is fixedly installed in the first annular groove, and the inner wall of the clamping component is provided with a fourth annular groove;

[0011] A first sealing element is disposed in the second annular groove, and the first sealing element is sealed to the male connector and the female connector.

[0012] The second sealing element is disposed in the third annular groove, and the second sealing element is sealed to the female connector and the clamping element.

[0013] The third sealing element is disposed in the fourth annular groove, and the third sealing element is sealed to the male connector and the clamping element.

[0014] In one or more embodiments of this utility model, the first seal is a metal seal, the cross-section of the first seal is at least partially curved, the first seal is bent toward the clamping member, and the axial length of the first seal is less than the axial depth of the second annular groove.

[0015] In one or more embodiments of this utility model, when the third seal is compressed, the radial dimension of the third seal is greater than the inner diameter of the clamping member; and / or,

[0016] The third sealing element includes a first sealing ring and a second sealing ring. The first sealing ring is disposed in the fourth annular groove. The outer wall of the first sealing ring is provided with a fifth annular groove. The second sealing ring is disposed in the fifth annular groove. The diameter of the second sealing ring is greater than the groove depth of the fifth annular groove.

[0017] In one or more embodiments of this utility model, the material of the first seal and / or the second seal and / or the third seal includes one or more combinations of polymer materials and metal materials.

[0018] In one or more embodiments of this utility model, the female connector includes a first connector body, a first valve core assembly movably disposed in the first connector body, and a fourth sealing element fixedly installed on the first valve core assembly; when the female connector and the male connector are inserted, the fourth sealing element is separated from the inner wall of the female connector, and the two ends of the female connector are connected; the axial length between the end face of the male connector facing the female connector and the first sealing element is greater than the axial length between the fourth sealing element and the inner wall of the female connector; when the female connector and the male connector are separated, the fourth sealing element is sealed to the inner wall of the female connector, and the two ends of the female connector are blocked.

[0019] In one or more embodiments of the present invention, the first valve core assembly includes a first fixed seat fixedly installed in the female connector, a first valve core seat movably disposed in the female connector and separated from the inner wall of the female connector, a first elastic member disposed between the first fixed seat and the first valve core seat, a first valve core fixedly installed with the first valve core seat, and a fourth sealing member fixedly installed on the outer wall of the first valve core. The first fixed seat is provided with a first through hole, and the first valve core seat is provided with a second through hole communicating with the first through hole.

[0020] In one or more embodiments of the present invention, the inner wall of the female connector is provided with a first mounting groove, and the female connector further includes a first retaining ring fixedly installed in the first mounting groove, and the first fixing seat abuts against the first retaining ring.

[0021] In one or more embodiments of this utility model, the male connector includes a second connector body, a second valve core assembly movably disposed in the second connector body, and a fifth sealing element fixedly installed on the second valve core assembly; when the female connector and the male connector are inserted, the fifth sealing element is separated from the inner wall of the male connector, and the two ends of the male connector are connected; the axial length between the end face of the male connector facing the female connector and the first sealing element is greater than the axial length between the fifth sealing element and the inner wall of the male connector; when the female connector and the male connector are separated, the fifth sealing element is sealed to the inner wall of the male connector, and the two ends of the male connector are blocked.

[0022] In one or more embodiments of the present invention, the second valve core assembly includes a second fixed seat fixedly installed in the male connector, a second valve core seat movably disposed in the male connector and separated from the inner wall of the male connector, a second elastic member disposed between the second fixed seat and the second valve core seat, a second valve core fixedly installed with the second valve core seat, a fifth sealing member fixedly installed on the outer wall of the second valve core, a third through hole provided on the second fixed seat, and a fourth through hole communicating with the third through hole provided on the second valve core seat.

[0023] In one or more embodiments of the present invention, the inner wall of the male connector is provided with a second mounting groove, and the male connector further includes a second retaining ring fixedly installed in the second mounting groove, and the second fixing seat abuts against the second retaining ring.

[0024] Compared with the prior art, the liquid connector of this utility model effectively blocks fluid pressure from different directions through the multi-seal structure formed in the radial and axial directions, forming a more three-dimensional sealing barrier, preventing fluid from finding a leakage path, greatly improving the reliability and service life of the liquid connector and reducing the risk of complete failure of the entire liquid connector. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1This is a simplified cross-sectional view of the liquid connector in one embodiment of the present invention;

[0027] Figure 2 for Figure 1 Enlarged view of the local structure at point A;

[0028] Figure 3 This is a cross-sectional view of the female connector in one embodiment of the present invention;

[0029] Figure 4 This is an exploded cross-sectional view of the female connector in one embodiment of the present invention;

[0030] Figure 5 This is a cross-sectional view of the male connector in one embodiment of the present invention.

[0031] Explanation of key figure labels:

[0032] 1. Male connector;

[0033] 11. Second connector body;

[0034] 12. Second valve core assembly;

[0035] 121 Second fixing seat;

[0036] 1211 Third through hole;

[0037] 122 Second valve core seat;

[0038] 1221 Fourth through hole;

[0039] 123 Second elastic element;

[0040] 124 Second valve core;

[0041] 13. Fifth seal;

[0042] 14. Second gear ring;

[0043] 2. Female connector;

[0044] 21 First connector body;

[0045] 211 First annular groove;

[0046] 2111 Connection surface;

[0047] 21111 Second annular groove;

[0048] 21112 Third annular groove;

[0049] 22. Clamping components;

[0050] 221 Fourth annular groove;

[0051] 231 First seal;

[0052] 232 Second seal;

[0053] 233 Third seal;

[0054] 24 First valve core assembly;

[0055] 241 First fixed seat;

[0056] 2411 First through hole;

[0057] 242 First valve core seat;

[0058] 2421 Second through hole;

[0059] 243 First elastic element;

[0060] 244 First valve core;

[0061] 25. Fourth seal;

[0062] 26 First stop ring. Detailed Implementation

[0063] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0064] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0065] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0066] The technical solution of this utility model will now be described with reference to the accompanying drawings.

[0067] Reference Figures 1-5As shown, the liquid connector of this utility model includes: a male connector 1, a female connector 2, a clamping member 22, a first sealing member 231, and a second sealing member 232. The female connector 2 is inserted into the male connector 1. The inner wall of the female connector 2 facing the male connector 1 is provided with a first annular groove 211. The first annular groove 211 includes a connecting surface 2111 connected to the inner wall of the female connector 2. The connecting surface 2111 is provided with a second annular groove 21111 and a third annular groove 21112 in a radial direction. The female connector 2 includes a clamping member 22, a first sealing member 231, a second sealing member 232, and a third sealing member 233. The clamping member 22 is fixedly installed in the first annular groove 211, and the inner wall of the clamping member 22 is provided with a fourth annular groove 221. The clamping member 22 is screwed and fixedly installed to the female connector 2. The first sealing member 231 is disposed in the second annular groove 21111 and is sealed to the male connector 1 and the female connector 2. The second sealing member 232 is disposed in the third annular groove 21112 and is sealed to the female connector 2 and the clamping member 22. The third sealing member 233 is disposed in the fourth annular groove 221 and is sealed to the male connector 1 and the clamping member 22. The number of the third annular groove 21112 and the fourth annular groove 221 can be the same as the number of the second sealing member 232 and the third sealing member 233, respectively. The second annular groove 21111 includes a first annular surface and a first groove surface perpendicular to the axis. The inner diameter of the first annular surface is larger than the inner diameter of the clamping member 22. The third annular groove 21112 includes a second annular surface, a third annular surface, and a second groove surface perpendicular to the axis. The second groove surface is connected to both the second and third annular surfaces, and the inner diameters of both the second and third annular surfaces are larger than the inner diameter of the first annular surface. The fourth annular groove 221 includes a third groove surface and a fourth groove surface perpendicular to the axis, and a fourth annular surface. The fourth annular surface is connected to both the third and fourth groove surfaces, and both the third and fourth groove surfaces are closer to the male connector 1.

[0068] For example, refer to Figures 2-3As shown, in this embodiment, there is only one third annular groove 21112 and one fourth annular groove 221. Therefore, when the male connector 1 and the female connector 2 are inserted, the first sealing element 231 and the third sealing element 233 form a double-seal structure in the axial direction, and the first sealing element 231 and the second sealing element 232 form a double-seal structure in the radial direction. In deep-water environments (such as at a depth of 3000 meters), the pressure at the bottom of the water is extremely high (reaching 65 MPa to 75 MPa). When the liquid connector is working, the pressure may come from various directions, especially under dynamic conditions, such as when the connector is subjected to vibration or impact. The axial double seal mainly resists pressure along the axis of the liquid connector, and the axial seal may prevent leakage along the pipeline direction, while the radial seal mainly resists pressure perpendicular to the axis. The combination of both can more effectively block fluid pressure from different directions, forming a more three-dimensional sealing barrier and preventing fluid from finding a leakage path. Multiple seals work together, so even if one seal fails due to wear, scratches, assembly errors, material aging, or extreme pressure / temperature, the other seals can still function, greatly improving the reliability and service life of the fluid connector and reducing the risk of complete failure of the entire fluid connector.

[0069] Of course, this application is not limited to this. In other embodiments, the number of the second seal 232 and the third sealing groove is the same and can be three or four, etc.; the number of the third seal 233 and the fourth sealing groove is the same and can be three or four, etc.

[0070] Specifically, refer to Figure 2 As shown, in this embodiment, the first seal 231 is a metal seal. The cross-section of the first seal 231 is at least partially curved. The first seal 231 is designed to be curved towards the clamping member 22, meaning it protrudes towards the male connector 1. The axial length of the first seal 231 is less than the axial depth of the second annular groove 21111. This metal seal can be made of shape memory alloy, such as a nickel-titanium alloy, copper-based alloy, or iron-based alloy. When the first seal 231 is compressed, it undergoes elastic deformation, and when the pressure is released, it roughly returns to its original shape. Therefore, when the first seal 231 is compressed, it can move towards the female connector 2 within the second annular groove 21111. Since the inner diameter of the sidewall of the second annular groove 21111 gradually decreases along the axial direction from the male connector 1 towards the female connector 2, the outer wall of the first seal 231 is also subjected to inward pressure as it gradually moves towards the female connector 2. This improves the reliability of the sealing connection between the first seal 231 and the male and female connectors 1 and 2. Based on this design, the reliability of multiple axial and radial seals can be ensured. Furthermore, since the first seal 231 can achieve both axial and radial seals, the number of parts can be reduced, avoiding excessive costs.

[0071] When both the second seal 232 and the third seal 233 are made of polymer materials, in this embodiment, the second seal 232 and the third seal 233 can be made of polyetheretherketone (PEEK), polytetrafluoroethylene (PTFE), expanded polytetrafluoroethylene (ePTFE), or polyimide, or a combination of one or more of these materials. For example, in one embodiment, the first seal 231 is a metal seal, and the second seal 232 and the third seal 233 can be PEEK seals, or PTFE, etc.

[0072] Of course, this application is not limited to this. In other embodiments, the first seal 231 may be polytetrafluoroethylene, one or both of the second seal 232 and the third seal 233 may be metal seals, etc., all of which are within the protection scope of this application.

[0073] Preferably, refer to Figure 2 As shown, in this embodiment, when the third seal 233 is under pressure, its radial dimension is larger than the inner diameter of the clamping member 22. It should be noted that when the male connector 1 is inserted into the female connector 2, if the third seal 233 uses a polymer material such as polyetheretherketone (PEEK) as its material or main material, the inner wall of the third seal 233 is sealed to the outer wall of the male connector 1, forming a forced seal. After the male connector 1 is inserted into the female connector 2, the liquid connector is in a conductive state. When the pressure medium flows within the liquid connector, the third seal 233 is squeezed by the axially flowing pressure medium (the two axially opposite end faces of the third seal 233 are squeezed by the clamping member 22 and cannot deform), resulting in slight radial deformation. This enhances the sealing effect between the third seal 233 and both the clamping member 22 and the male connector 1.

[0074] It should be noted that the third sealing element 233 in this embodiment includes a first sealing ring and a second sealing ring. The first sealing ring is disposed in the fourth annular groove 221, and the outer wall of the first sealing ring is provided with a fifth annular groove. The second sealing ring is disposed in the fifth annular groove, and the diameter of the second sealing ring is greater than the groove depth of the fifth annular groove, that is, the second sealing ring protrudes from the outer wall of the first sealing ring. In actual use, during the installation of the third sealing element 233 in the fourth annular groove 221, the second sealing ring will apply pressure to the first sealing ring, thereby making the first sealing ring contact the outer wall of the male connector 1 more tightly, thus improving the sealing reliability of the third sealing element 233 and the male connector 1. Similarly, when the diameter of the second sealing ring is greater than the groove depth of the fifth annular groove, the sealing reliability of the third sealing element 233 and the clamping element 22 can also be improved.

[0075] To ensure that the female connector 2 in the liquid connector remains sealed throughout the entire process—before, during, and after the insertion of male connector 1 and female connector 2, and to prevent underwater leakage—refer to... Figures 3-4As shown, in this embodiment, the female connector 2 includes a first connector body 21, a first valve core assembly 24 movably disposed in the first connector body 21, and a fourth sealing element 25 fixedly installed on the first valve core assembly 24. When the female connector 2 and the male connector 1 are inserted, the fourth sealing element 25 is separated from the inner wall of the female connector 2, and the two ends of the female connector 2 are connected. The axial length between the end face of the male connector 1 facing the female connector 2 and the first sealing element 231 is greater than the axial length between the fourth sealing element 25 and the inner wall of the female connector 2. When the female connector 2 and the male connector 1 are separated, the fourth sealing element 25 is sealed to the inner wall of the female connector 2, and the two ends of the female connector 2 are blocked.

[0076] Specifically, refer to Figures 3-4 As shown, the first valve core assembly 24 in this embodiment includes a first fixing seat 241 fixedly installed in the female connector 2, a first valve core seat 242 movably disposed in the female connector 2 and separated from the inner wall of the female connector 2, a first elastic member 243 disposed between the first fixing seat 241 and the first valve core seat 242, a first valve core 244 fixedly installed with the first valve core seat 242, and a fourth sealing member 25 fixedly installed on the outer wall of the first valve core 244. The first fixing seat 241 is provided with a first through hole 2411, and the first valve core seat 242 is provided with a second through hole 2421 communicating with the first through hole 2411. A first receiving space is formed between the first fixing seat 241 and the first valve core seat 242, which can accommodate the first elastic member 243. The first elastic member 243 can be a spring, a sheet, or other structure that can provide elastic force. When the male connector 1 and female connector 2 are inserted, the fourth seal 25 separates from the inner wall of the female connector 2. The first through hole 2411 connects the inner cavity of the female connector 2 away from the male connector 1 to the first receiving space, and the second through hole 2421 connects the inner cavity of the female connector 2 near the male connector 1 to the first receiving space. According to this design, the pressure medium can flow from the pipe connected to the female connector 2, into the inner cavity of the female connector 2 away from the male connector 1, into the first receiving space, and then into the inner cavity of the female connector 2 near the male connector 1. When the female connector 2 and male connector 1 are separated (i.e., when the fourth seal 25 is sealed to the female connector 2), the pressure medium cannot flow from the first receiving cavity into the inner cavity of the female connector 2 near the male connector 1.

[0077] For ease of fixing the first fixing seat 241, refer to Figures 3-4 As shown, the inner wall of the female connector 2 in this embodiment is provided with a first mounting groove. The female connector 2 also includes a first retaining ring 26 fixedly installed in the first mounting groove, and the first fixing seat 241 abuts against the first retaining ring 26.

[0078] To ensure that the male connector 1 of the liquid connector remains sealed throughout the entire process—before, during, and after the insertion of male connector 1 and female connector 2—and to prevent underwater leakage, refer to... Figure 5 As shown, in this embodiment, the male connector 1 includes a second connector body 11, a second valve core assembly 12 movably disposed in the second connector body 11, and a fifth sealing element 13 fixedly installed on the second valve core assembly 12. When the female connector 2 and the male connector 1 are inserted, the fifth sealing element 13 is separated from the inner wall of the male connector 1, and the two ends of the male connector 1 are connected. The axial length between the end face of the male connector 1 facing the female connector 2 and the first sealing element 231 is greater than the axial length between the fifth sealing element 13 and the inner wall of the male connector 1. When the female connector 2 and the male connector 1 are separated, the fifth sealing element 13 is sealed to the inner wall of the male connector 1, and the two ends of the male connector 1 are blocked.

[0079] Specifically, refer to Figure 5 As shown, the second valve core assembly 12 in this embodiment includes a second fixing seat 121 fixedly installed in the male connector 1, a second valve core seat 122 movably disposed in the male connector 1 and separated from the inner wall of the male connector 1, a second elastic member 123 disposed between the second fixing seat 121 and the second valve core seat 122, a second valve core fixedly installed with the second valve core seat 122, and a fifth sealing member 13 fixedly installed on the outer wall of the second valve core. The second fixing seat 121 is provided with a third through hole 1211, and the second valve core seat 122 is provided with a fourth through hole 1221 communicating with the third through hole 1211. A second receiving space is formed between the second fixing seat 121 and the second valve core seat 122, which can accommodate the second elastic member 123. The second elastic member 123 can be a spring, a sheet, or other structure capable of providing elastic force. When male connector 1 and female connector 2 are inserted, the fifth seal 13 separates from the inner wall of male connector 1. The third through hole 1211 connects the inner cavity of the end of male connector 1 away from female connector 2 and the second receiving space, and the fourth through hole 1221 connects the inner cavity of the end of male connector 1 near female connector 2 and the second receiving space. According to this design, the pressure medium can flow from the pipe connected to male connector 1, into the inner cavity of the end of male connector 1 away from female connector 2, into the second receiving space, and into the inner cavity of the end of male connector 1 near female connector 2. When female connector 2 and male connector 1 are separated (i.e., when the fifth seal 13 is sealed to male connector 1), the pressure medium cannot flow from the second receiving cavity into the inner cavity of the end of male connector 1 near female connector 2.

[0080] For ease of fixing the second fixing base 121, refer to Figure 5 As shown, the inner wall of the male connector 1 in this embodiment is provided with a second mounting groove. The male connector 1 also includes a second retaining ring 14 fixedly installed in the second mounting groove, and the second fixing seat 121 abuts against the second retaining ring 14.

[0081] Reference Figures 1-5 As shown, throughout the entire process of inserting male connector 1 and female connector 2, both male connector 1 and female connector 2 remain sealed, and the seal of the liquid connector will not fail at any stage due to the insertion operation. When male connector 1 and female connector 2 are mated, the clamping member 22 on female connector 2 has an axial guiding function, and male connector 1 can be coarsely positioned along the clamping member 22. When male connector 1 passes through the clamping member 22, the third sealing member 233 inside the clamping member 22 contacts male connector 1 and forms the first axial seal. At this time, the flow channels inside male connector 1 and female connector 2 are not open (i.e., the fourth sealing member 25 is sealed to the inner wall of female connector 2, and the fifth sealing member 13 is sealed to the inner wall of male connector 1). Male connector 1 continues to move toward female connector 2 until male connector 1 contacts the first sealing member 231 in female connector 2, at which point male connector 1 and the first sealing member 231 form the second axial seal. At this time, the male connector 1 and the female connector 2 form a double sealing structure in both the axial and radial directions. The second valve core inside the male connector 1 and the first valve core 244 inside the female connector 2 begin to contact and gradually move axially as the male connector 1 and the female connector 2 are combined, so that the fourth sealing element 25 is sealed to the inner wall of the female connector 2 and the fifth sealing element 13 is sealed to the inner wall of the male connector 1. A medium flow channel is formed between the male connector 1 and the female connector 2.

[0082] Reference Figures 1-5 As shown, throughout the entire process of separating male connector 1 and female connector 2, male connector 1 and female connector 2 remain in a sealed state, and the seal of the liquid connector will not fail at any stage due to the separation operation. When male connector 1 and female connector 2 need to be unlocked, as male connector 1 and female connector 2 separate, the second valve core inside male connector 1 and the first valve core 244 inside female connector 2 gradually move apart axially, thereby making the fourth sealing element 25 sealably connected to the inner wall of female connector 2, and the fifth sealing element 13 sealably connected to the inner wall of male connector 1, closing the medium flow channel between male connector 1 and female connector 2. At this time, the self-sealing in male connector 1 (i.e., the fifth sealing element 13 sealably connected to the inner wall of male connector 1), the self-sealing in female connector 2 (i.e., the fourth sealing element 25 sealably connected to the inner wall of female connector 2), and the axial and radial double sealing structure between male connector 1 and female connector 2 all function. As the male connector 1 and the female connector 2 continue to separate, the first seal 231 in the male connector 1 and the female connector 2 disengages, and then the male connector 1 separates from the third seal 233. Finally, after the male connector 1 and the female connector 2 are completely separated, the male connector 1 and the female connector 2 each maintain an independent sealing state.

[0083] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0084] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0085] In the description of the embodiments of this utility model, it should also be noted that the terms "first" and "second" used herein do not specifically refer to any order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0086] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0087] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A liquid connector, characterized in that, The liquid connector includes: Male connector; A female connector is inserted into the male connector. The inner wall of the female connector facing the male connector has a first annular groove. The first annular groove includes a connecting surface connected to the inner wall of the female connector. The connecting surface has a second annular groove and a third annular groove radially arranged. The female connector includes: A clamping component is fixedly installed in the first annular groove, and the inner wall of the clamping component is provided with a fourth annular groove; A first sealing element is disposed in the second annular groove, and the first sealing element is sealed to the male connector and the female connector. The second sealing element is disposed in the third annular groove, and the second sealing element is sealed to the female connector and the clamping element. The third sealing element is disposed in the fourth annular groove, and the third sealing element is sealed to the male connector and the clamping element.

2. The liquid connector according to claim 1, characterized in that, The first seal is a metal seal, and the cross-section of the first seal is at least partially curved. The first seal is bent toward the clamping member, and the axial length of the first seal is less than the axial depth of the second annular groove.

3. The liquid connector according to claim 1, characterized in that, When the third seal is under pressure, the radial dimension of the third seal is greater than the inner diameter of the clamping member; and / or, The third sealing element includes a first sealing ring and a second sealing ring. The first sealing ring is disposed in the fourth annular groove. The outer wall of the first sealing ring is provided with a fifth annular groove. The second sealing ring is disposed in the fifth annular groove. The diameter of the second sealing ring is greater than the groove depth of the fifth annular groove.

4. The liquid connector according to claim 1, characterized in that, The material of the first seal and / or the second seal and / or the third seal includes one or more combinations of polymer materials and metallic materials.

5. The liquid connector according to claim 1, characterized in that, The female connector includes a first connector body, a first valve core assembly movably disposed in the first connector body, and a fourth sealing element fixedly installed on the first valve core assembly. When the female connector and the male connector are inserted, the fourth sealing element is separated from the inner wall of the female connector, and the two ends of the female connector are connected. The axial length between the end face of the male connector facing the female connector and the first sealing element is greater than the axial length between the fourth sealing element and the inner wall of the female connector. When the female connector and the male connector are separated, the fourth sealing element is sealed to the inner wall of the female connector, and the two ends of the female connector are blocked.

6. The liquid connector according to claim 5, characterized in that, The first valve core assembly includes a first fixed seat fixedly installed in the female connector, a first valve core seat movably disposed in the female connector and separated from the inner wall of the female connector, a first elastic member disposed between the first fixed seat and the first valve core seat, and a first valve core fixedly installed with the first valve core seat. The fourth sealing member is fixedly installed on the outer wall of the first valve core. The first fixed seat is provided with a first through hole, and the first valve core seat is provided with a second through hole communicating with the first through hole.

7. The liquid connector according to claim 6, characterized in that, The inner wall of the female connector is provided with a first mounting groove, and the female connector also includes a first retaining ring fixedly installed in the first mounting groove, and the first fixing seat abuts against the first retaining ring.

8. The liquid connector according to claim 1, characterized in that, The male connector includes a second connector body, a second valve core assembly movably disposed in the second connector body, and a fifth sealing element fixedly installed on the second valve core assembly. When the female connector and the male connector are inserted, the fifth sealing element is separated from the inner wall of the male connector, and the two ends of the male connector are connected. The axial length between the end face of the male connector facing the female connector and the first sealing element is greater than the axial length between the fifth sealing element and the inner wall of the male connector. When the female connector and the male connector are separated, the fifth sealing element is sealed to the inner wall of the male connector, and the two ends of the male connector are blocked.

9. The liquid connector according to claim 8, characterized in that, The second valve core assembly includes a second fixed seat fixedly installed in the male connector, a second valve core seat movably disposed in the male connector and separated from the inner wall of the male connector, a second elastic member disposed between the second fixed seat and the second valve core seat, and a second valve core fixedly installed with the second valve core seat. The fifth sealing member is fixedly installed on the outer wall of the second valve core. The second fixed seat is provided with a third through hole, and the second valve core seat is provided with a fourth through hole communicating with the third through hole.

10. The liquid connector according to claim 9, characterized in that, The male connector has a second mounting groove on its inner wall, and the male connector also includes a second retaining ring fixedly installed in the second mounting groove, with the second fixing seat abutting against the second retaining ring.

Images