A dual-channel, independently sealed quick-connect coupling

Abstract

This invention discloses a quick-connect fitting with dual-channel independent sealing, relating to the field of quick-connect pipe technology. It includes a male fitting and a female fitting with a first flow cavity. The male fitting has a first channel and a second channel spaced apart. A first sealing element with a second flow cavity is slidably embedded in the first flow cavity, and a first sealing ring is fitted onto the first sealing element for abutting against the first flow cavity. A second sealing element with a third flow cavity is slidably embedded in the second flow cavity, and a second sealing ring is fitted onto the second sealing element for abutting against the second flow cavity. When the male fitting and female fitting are inserted, the second and third flow cavities are sequentially connected to the first channel to form a first flow channel. The first flow cavity and the second channel are interconnected to form a second flow channel independently of the first flow channel. Both the first and second flow channels are used for the flow of liquids or gases. This invention solves the problem in existing technologies where a single fitting cannot achieve independent dual-channel connection.

Description

Technical Field

[0001] This invention relates to the field of quick-connect pipe technology, and in particular to a quick-connect fitting with dual independent sealing channels. Background Technology

[0002] In industrial automation, laboratory equipment, medical instruments, and many fluid transport fields, quick-connect couplings serve as a key connection structure, enabling rapid connection and disconnection of pipelines, and are widely used in the transport and control systems of liquids, gases, and other media.

[0003] In existing technologies, traditional quick couplings are mostly single-channel structures, meaning that one coupling only connects and seals a single pipe. When it is necessary to connect two independent fluid channels simultaneously at the same interface location, the conventional solution is to install two independent quick couplings side by side. For example, in applications such as dual-supply, cooling circuits, and applications with both pneumatic and hydraulic pressure, operators need to align, insert, and tighten two separate male and female couplings.

[0004] However, the solution using the two independent connectors has the following drawbacks: First, the operation efficiency is low, requiring two independent docking actions, which increases assembly time and labor costs; second, in installation environments with limited space or poor visibility, it is difficult to align the two connectors accurately at the same time, which can easily lead to difficulties in insertion and removal or misalignment; third, since the two connectors are separate structures, there are manufacturing or installation errors in their axial length and relative position, which can easily lead to poor sealing and uneven stress on individual connectors, thus affecting the reliability of the overall connection; in addition, if the two pipelines transport different media or have cleanliness requirements, there are gaps between the separate connectors, which can easily cause media leakage, splashing or cross-contamination during disassembly and assembly, affecting system safety and media purity.

[0005] It is evident that existing technologies have limitations in achieving independent dual-channel connectivity with a single mating joint. Summary of the Invention

[0006] The purpose of this invention is to provide a quick-connect coupling with dual-channel independent sealing, which solves the problem that it is difficult to achieve dual-channel independent connection in a single coupling in the prior art.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A dual-channel independent sealing quick-connect connector includes a male connector and a female connector with a first flow cavity. The male connector has a first channel and a second channel spaced apart. A first sealing element with a second flow cavity is slidably embedded in the first flow cavity, and the first sealing element is fitted with a first sealing ring for abutting against the first flow cavity. A second sealing element with a third flow cavity is slidably embedded in the second flow cavity, and the second sealing element is fitted with a second sealing ring for abutting against the second flow cavity.

[0009] When the male connector is inserted into the female connector, the second flow cavity, the third flow cavity and the first channel are sequentially connected to form a first flow channel. The first flow cavity and the second channel are interconnected to form a second flow channel that is independently set apart from the first flow channel. Both the first flow channel and the second flow channel are used for the flow of liquid or gas.

[0010] Optionally, the outer wall of the first seal is fitted with a first spring located in the first flow cavity, and the two ends of the first spring abut against the female connector and the first seal, respectively. The outer wall of the second seal is fitted with a second spring located in the second flow cavity, and the two ends of the second spring abut against the first seal and the second seal, respectively.

[0011] Optionally, the female connector is provided with a convex ring that abuts against the first spring. The convex ring is provided with a first sealing groove that is adapted to the first sealing ring. The convex ring is used to divide the first flow cavity into a first cavity and a second cavity. The outer wall of the first sealing member is provided with a first through groove. The first cavity, the first through groove, the second cavity and the second channel are sequentially connected to form the second flow channel.

[0012] Optionally, the first sealing member has a convex ring that abuts against the second spring, and the convex ring has a second sealing groove for fitting and installing the second sealing ring. One end of the third flow cavity communicates with the side wall of the second sealing member, and the other end of the third flow cavity communicates with the end of the second sealing member near the male connector.

[0013] Optionally, the convex ring is used to divide the second flow cavity into a third cavity and a fourth cavity. The third cavity is internally threaded with a first pipe joint, and the first pipe joint is provided with a fourth flow cavity. The fourth flow cavity, the third flow cavity and the first channel are sequentially connected to form the first flow channel.

[0014] Optionally, the third flow cavity includes a fifth cavity and a sixth cavity that are perpendicularly connected to each other. The fifth cavity extends through opposite sides of the second seal and is connected to the fourth flow cavity. The sixth cavity is connected to the first channel.

[0015] Optionally, the first sealing member has at least one second through groove at one end located in the second cavity, the second through groove being connected to the second cavity, and the second sealing member has at least one third through groove at one end located in the fourth cavity, the third through groove being connected to the fourth cavity.

[0016] Optionally, the male connector is fitted with a third sealing ring and a fourth sealing ring. The third sealing ring is used to abut against the second flow cavity, and the fourth sealing ring is used to abut against the first flow cavity. The distance between the third sealing ring and the second sealing element is smaller than the distance between the fourth sealing ring and the second sealing element.

[0017] Optionally, the male connector is provided with a second pipe connector and a third pipe connector at a distance from the female connector. The second pipe connector is connected to the first channel, and the third pipe connector is connected to the second channel. Both the second pipe connector and the third pipe connector are used to connect to an external flow pipe.

[0018] Optionally, the male connector is provided with a limiting boss arranged adjacent to the third sealing ring. The limiting boss is used to abut against the first sealing element. The limiting boss, the second pipe connector, and the third pipe connector are all integrally formed with the male connector. Alternatively, the limiting boss and the male connector are integrally formed, and the second pipe connector and the third pipe connector are threadedly connected to the male connector.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention provides a dual-channel, independently sealed quick-connect coupling. By integrating two independent fluid channels into a single coupling structure, the operator only needs to perform one insertion and connection action between the male and female connectors to simultaneously connect the two independent flow channels. This significantly reduces assembly steps, operation time, and labor costs, making it particularly suitable for applications requiring frequent insertion and removal or batch assembly. Achieving dual-channel connection through a single coupling greatly saves installation space, avoiding the extra space required for installing two independent couplings side-by-side. This makes this invention particularly suitable for equipment and piping systems with compact spaces, limited layouts, or poor visibility, reducing installation difficulty and alignment requirements. Therefore, this invention solves the problem of existing single couplings being unable to achieve independent dual-channel connection. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0023] Figure 1 A three-dimensional structural schematic diagram of a quick-connect coupling with dual independent sealing provided in an embodiment of the present invention;

[0024] Figure 2 A cross-sectional structural diagram of a quick-connect coupling with dual independent sealing provided in an embodiment of the present invention;

[0025] Figure 3 An exploded structural diagram of a dual-channel independently sealed quick-connect joint provided in an embodiment of the present invention;

[0026] Figure 4 A schematic cross-sectional view of the female connector in a dual-channel independent sealing quick-connect joint provided in an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of the half-section structure of the female connector in a dual-channel independent sealing quick-connect joint provided in an embodiment of the present invention;

[0028] Figure 6 A schematic cross-sectional view of the male connector in a dual-channel independent sealing quick-connect joint provided in an embodiment of the present invention;

[0029] Figure 7 A half-sectional view of the male connector in a dual-channel independent sealing quick-connect joint provided in an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram illustrating the application structure of a dual-channel independently sealed quick-connect joint provided in an embodiment of the present invention.

[0031] Illustration:

[0032] 10. Male connector; 11. First channel; 12. Second channel; 13. Second pipe connector; 14. Third pipe connector; 15. Limiting boss;

[0033] 20. Female connector; 21. First flow cavity; 211. First cavity body; 212. Second cavity body; 22. Raised ring; 221. First sealing groove;

[0034] 30. First sealing element; 31. Second flow cavity; 311. Third cavity; 312. Fourth cavity; 32. Protruding ring; 321. Second sealing groove; 33. First through groove; 34. Second through groove;

[0035] 40. Second seal; 41. Third flow cavity; 411. Fifth cavity; 412. Sixth cavity; 42. Third through groove;

[0036] 51. First sealing ring; 52. Second sealing ring; 53. Third sealing ring; 54. Fourth sealing ring;

[0037] 61. First spring; 62. Second spring;

[0038] 70. First pipe fitting; 71. Fourth flow chamber. Detailed Implementation

[0039] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0040] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0041] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] This invention provides a quick-connect coupling with dual-channel independent sealing, such as... Figures 1 to 7As shown, the device includes a male connector 10 and a female connector 20 having a first flow cavity 21. The male connector 10 is provided with a first channel 11 and a second channel 12 spaced apart. A first sealing member 30 having a second flow cavity 31 is slidably embedded in the first flow cavity 21. A first sealing ring 51 for abutting against the first flow cavity 21 is sleeved on the first sealing member 30. A second sealing member 40 having a third flow cavity 41 is slidably embedded in the second flow cavity 31. A second sealing ring 52 for abutting against the second flow cavity 31 is sleeved on the second sealing member 40.

[0043] When the male connector 10 is inserted into the female connector 20, the second flow cavity 31, the third flow cavity 41 and the first channel 11 are connected in sequence to form the first flow channel. The first flow cavity 21 and the second channel 12 are connected to each other to form the second flow channel, which is independently set with respect to the first flow channel. Both the first flow channel and the second flow channel are used to flow liquids or gases.

[0044] It should be noted that the dual-channel independent sealing quick-connect coupling provided by this invention integrates two independent fluid channels into a single coupling structure. Operators only need to perform one insertion action between the male connector 10 and the female connector 20 to simultaneously connect the two independent flow channels, significantly reducing assembly steps, operation time, and labor costs. This is particularly suitable for applications requiring frequent insertion / removal or batch assembly. Achieving dual-channel connection through a single coupling greatly saves installation space, avoiding the extra space required for installing two independent couplings side-by-side. This makes this invention particularly suitable for equipment and piping systems with compact spaces, limited layouts, or poor visibility, reducing installation difficulty and alignment requirements. Therefore, this invention solves the problem of existing single couplings being unable to achieve independent dual-channel connection.

[0045] like Figures 2 to 5 As shown, the outer wall of the first sealing member 30 is fitted with a first spring 61 located in the first flow cavity 21, and the two ends of the first spring 61 abut against the female connector 20 and the first sealing member 30 respectively. The outer wall of the second sealing member 40 is fitted with a second spring 62 located in the second flow cavity 31, and the two ends of the second spring 62 abut against the first sealing member 30 and the second sealing member 40 respectively.

[0046] In specific implementation, the first spring 61 and the second spring 62 enable flexible insertion between the male connector 10 and the female connector 20. When the male connector 10 is inserted into the first flow cavity 21, it abuts against the second sealing element 40, causing the second sealing element 40 to compress the second spring 62. The second sealing ring 52 releases the seal of the second flow cavity 31, allowing the second flow cavity 31, the third flow cavity 41, and the first channel 11 to connect sequentially and form the first flow channel. When the male connector 10 continues to be inserted into the first flow cavity 21, the first sealing element 30 compresses the first spring 61, causing the position of the first sealing ring 51 to shift. Then, the first flow cavity 21 and the second channel 12 connect to each other and form the second flow channel.

[0047] like Figures 2 to 5 As shown, the female connector 20 has a convex ring 22 that abuts against the first spring 61. The convex ring 22 has a first sealing groove 221 that matches the first sealing ring 51. The convex ring 22 is used to divide the first flow cavity 21 into a first cavity 211 and a second cavity 212. The outer wall of the first sealing member 30 has a first through groove 33. The first cavity 211, the first through groove 33, the second cavity 212, and the second channel 12 are sequentially connected to form a second flow channel. In this embodiment, the convex ring 22 and the female connector 20 are integrally formed.

[0048] In specific implementation, the convex ring 22 set in the female connector 20 actively divides the first flow cavity 21 into a first cavity 211 and a second cavity 212. Combined with the first through groove 33 opened on the outer wall of the first sealing member 30, the first cavity 211, the first through groove 33, the second cavity 212, and the second channel 12 are sequentially connected to form a second flow channel. When the male connector 10 is inserted into the female connector 20, the first through groove 33 connects the first cavity 211 and the second cavity 212, making the second flow channel a passage. When the male connector 10 is separated from the female connector 20, the first sealing ring 51 abuts against the first sealing groove 221, making the first cavity 211 and the second cavity 212 disconnected, thereby cutting off the second flow channel. Since the convex ring 22 abuts against the first spring 61, it provides a stable axial support point and guiding reference for the reciprocating motion of the first sealing member 30.

[0049] like Figure 2 and Figure 4As shown, the first sealing member 30 has a convex ring 32 that abuts against the second spring 62. The convex ring 32 has a second sealing groove 321 for fitting and installing the second sealing ring 52. One end of the third flow cavity 41 communicates with the side wall of the second sealing member 40, and the other end of the third flow cavity 41 communicates with the end of the second sealing member 40 near the male connector 10. The convex ring 32 is used to divide the second flow cavity 31 into a third cavity 311 and a fourth cavity 312. The third cavity 311 is internally threaded with a first pipe connector 70. The first pipe connector 70 has a fourth flow cavity 71. The fourth flow cavity 71, the third flow cavity 41 and the first channel 11 are sequentially connected to form a first flow channel. In this embodiment, the convex ring 32 and the first sealing member 30 are integrally formed.

[0050] In specific implementation, by providing a convex ring 32 within the first sealing member 30, the second flow cavity 31 can be divided into a third cavity 311 and a fourth cavity 312. When the male connector 10 and the female connector 20 are inserted and engaged, the fourth flow cavity 71, the third flow cavity 41, and the first channel 11 are sequentially connected to form the first flow channel. When the male connector 10 and the female connector 20 are separated, under the elastic force of the second spring 62, the second sealing member 40's second sealing ring 52 abuts against the second sealing ring 52, causing a break in the circuit between the fourth flow cavity 71 and the third flow cavity 41, thereby interrupting the first flow channel. Because the convex ring 32 abuts against the second spring 62, it provides a stable axial support point and guiding reference for the reciprocating motion of the second sealing member 40.

[0051] Furthermore, since one end of the third flow cavity 41 is connected to the side wall of the second seal 40, and the other end of the third flow cavity 41 is connected to the end of the second seal 40 near the male connector 10, the third flow cavity 41 is a turning channel, allowing the fluid to enter from the side and turn gently, which significantly buffers the hydrodynamic impact in the initial stage of docking. This not only protects the second seal 40 and the second sealing ring 52, but also makes the medium flow more stable, reduces pressure fluctuations and potential water hammer effects, and improves the smoothness of docking action and the durability of system components.

[0052] like Figure 2 , Figure 4 and Figure 5 As shown, the third flow cavity 41 includes a fifth cavity 411 and a sixth cavity 412 that are perpendicularly connected to each other. The fifth cavity 411 extends through the opposite sides of the second seal 40. The fifth cavity 411 is connected to the fourth flow cavity 71, and the sixth cavity 412 is connected to the first channel 11.

[0053] In specific implementation, the third flow chamber 41 is designed as a fifth chamber 411 and a sixth chamber 412 that are perpendicularly connected to each other, forming a precise right-angle turning flow channel. When fluid flows in from the fourth flow chamber 71 through the fifth chamber 411, its flow direction undergoes a forced change of 90 degrees. This design significantly reduces the axial impact component in the fluid's kinetic energy and transforms it into radial diffusion and recombination. The through-flow design of the fifth chamber 411 on both sides of the second seal 40 forms a symmetrical fluid inlet or distribution structure, allowing the medium to enter the fifth chamber 411 uniformly or evenly from both sides of the second seal 40. Symmetrical flow ensures a more balanced force exerted by the fluid on the second seal 40, reducing the lateral forces it may experience, further ensuring the smoothness and accuracy of the axial movement of the second seal 40, and also making the fluid flow rate more stable.

[0054] like Figure 2 , Figure 4 and Figure 5 As shown, the first sealing member 30 is provided with at least one second through groove 34 at one end located in the second cavity 212, and the second through groove 34 is connected to the second cavity 212. The second sealing member 40 is provided with at least one third through groove 42 at one end located in the fourth cavity 312, and the third through groove 42 is connected to the fourth cavity 312.

[0055] In practical implementation, the second through groove 34 serves two purposes: firstly, it allows air to flow smoothly within the first cavity 211 during male connector 10 insertion, facilitating greater air resistance and thus ensuring smooth insertion; secondly, the second through groove 34 provides a channel for fluid flow, allowing fluid to flow smoothly within the first cavity 211 and into the second channel 12. The third through groove 42 allows air to flow smoothly within the second cavity 212, facilitating greater air resistance and ensuring smooth insertion of the male connector 10; simultaneously, the third through groove 42 allows liquid to drain, preventing excess liquid from accumulating in the fourth cavity 312.

[0056] like Figures 1 to 5 As shown, the male connector 10 is fitted with a third sealing ring 53 and a fourth sealing ring 54. The third sealing ring 53 abuts against the second flow cavity 31, and the fourth sealing ring 54 abuts against the first flow cavity 21. The distance between the third sealing ring 53 and the second sealing element 40 is smaller than the distance between the fourth sealing ring 54 and the second sealing element 40. In this embodiment, both the third sealing ring 53 and the fourth sealing ring 54 are O-shaped, and there are two fourth sealing rings 54. The outer diameter of the third sealing ring 53 is smaller than the outer diameter of the fourth sealing ring 54.

[0057] In specific implementation, when the male connector 10 is inserted into the female connector 20, the second sealing element 40 is squeezed by the male connector 10 and simultaneously squeezes the second spring 62, while the first sealing element 30 does not move, causing the second sealing ring 52 to separate from the second sealing groove 321, forming a passage in the first flow channel, and the third sealing ring 53 to perform a sealing function to prevent liquid or gas leakage; when the male connector 10 continues to be inserted, the first sealing element 30 squeezes the first spring 61 to move, and simultaneously drives the first pipe connector 70 to move synchronously, causing the first sealing ring 51 to separate from the first sealing groove 221, forming a passage in the second flow channel, and the fourth sealing ring 54 to perform a sealing function to prevent liquid or gas leakage.

[0058] like Figure 6 and Figure 7 As shown, a second pipe connector 13 and a third pipe connector 14 are provided at a distance from the end of the male connector 10 away from the female connector 20. The second pipe connector 13 is connected to the first channel 11, and the third pipe connector 14 is connected to the second channel 12. Both the second pipe connector 13 and the third pipe connector 14 are used to connect to an external flow pipe. In this embodiment, both the second pipe connector 13 and the third pipe connector 14 are pipe connectors known in the art.

[0059] In practice, by setting the second pipe connector 13 and the third pipe connector 14, it is easy to quickly connect the external flow pipe, so that the first flow channel and the second flow channel can be smoothly connected, and the pipeline can be extended to the actual installation position.

[0060] like Figure 6 and Figure 7 As shown, the male connector 10 is provided with a limiting boss 15 arranged adjacent to the third sealing ring 53. The limiting boss 15 is used to abut against the first sealing element 30. The limiting boss 15, the second pipe connector 13 and the third pipe connector 14 are integrally formed with the male connector 10; or, the limiting boss 15 is integrally formed with the male connector 10, and the second pipe connector 13 and the third pipe connector 14 are threadedly connected to the male connector 10.

[0061] In practice, when the second pipe connector 13 and the third pipe connector 14 are threadedly connected to the male connector 10, the second pipe connector 13 and the third pipe connector 14 can be quickly disassembled and assembled, and different specifications of pipe connectors can be replaced according to actual installation requirements. By setting the limiting boss 15, after the male connector 10 squeezes the second sealing element 40, it can continue to squeeze the first sealing element 30.

[0062] For example, such as Figure 8 As shown, the first pipe connector 70 is connected to liquid A through a connecting pipe, and the first cavity 211 is connected to liquid. The male connector 10 and the female connector 20 are inserted and mated, so that liquid A can flow through the first flow channel and liquid B can flow through the second flow channel, thereby realizing the independent flow of the two liquids.

[0063] Working principle: When the male connector 10 and the female connector 20 are not inserted, the first sealing element 30, under the elastic force of the first spring 61, causes the first sealing ring 51 to abut against the first sealing groove 221, thus cutting off the second flow channel; the second sealing element 40, under the elastic force of the second spring 62, causes the second sealing ring 52 to abut against the second sealing groove 321, thus cutting off the first flow channel, thereby realizing the separation of the male connector 10 and the female connector 20 and realizing the cutting off of the dual-channel fluid.

[0064] When the male connector 10 is inserted into the female connector 20, the male connector 10 abuts against the second seal 40, causing the second seal 40 to compress the second spring 62. The second sealing ring 52 releases the seal of the fourth flow cavity 71, allowing the fourth flow cavity 71, the third flow cavity 41, and the first channel 11 to connect sequentially and form the first flow channel. When the male connector 10 continues to be inserted into the first flow cavity 21, the limiting boss 15 abuts against the first seal 30, causing the first seal 30 to compress the first spring 61 and displace the position of the first sealing ring 51. The first cavity 211, the first through groove 33, the second cavity 212, and the second channel 12 connect sequentially and form the second flow channel, thereby realizing the dual-channel flow passage.

[0065] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention 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 invention.

Claims

1. A quick-connect coupling with dual-channel independent sealing, characterized in that, The device includes a male connector (10) and a female connector (20) having a first flow cavity (21). The male connector (10) is provided with a first channel (11) and a second channel (12) spaced apart. The first flow cavity (21) is slidably fitted with a first sealing element (30) having a second flow cavity (31), and the first sealing element (30) is fitted with a first sealing ring (51). The second flow cavity (31) is slidably fitted with a second sealing element (40) having a third flow cavity (41), and the second sealing element (40) is fitted with a second sealing ring (52). When the male connector (10) is inserted into the female connector (20), the second flow cavity (31), the third flow cavity (41) and the first channel (11) are connected in sequence to form a first flow channel, and the first flow cavity (21) and the second channel (12) are connected to each other to form a second flow channel that is independently set apart from the first flow channel; The outer wall of the first sealing member (30) is fitted with a first spring (61) located in the first flow cavity (21), and the two ends of the first spring (61) abut against the female connector (20) and the first sealing member (30) respectively. The outer wall of the second sealing member (40) is fitted with a second spring (62) located in the second flow cavity (31), and the two ends of the second spring (62) abut against the first sealing member (30) and the second sealing member (40) respectively. The female connector (20) is provided with a convex ring (22) that abuts against the first spring (61). The convex ring (22) is provided with a first sealing groove (221) that is adapted to the first sealing ring (51). The convex ring (22) is used to divide the first flow cavity (21) into a first cavity (211) and a second cavity (212). The outer wall of the first sealing member (30) is provided with a first through groove (33). The first cavity (211), the first through groove (33), the second cavity (212) and the second channel (12) are connected in sequence to form the second flow channel. The male connector (10) is fitted with a third sealing ring (53) and a fourth sealing ring (54). The third sealing ring (53) is used to abut against the second flow cavity (31), and the fourth sealing ring (54) is used to abut against the first flow cavity (21). The distance between the third sealing ring (53) and the second sealing element (40) is smaller than the distance between the fourth sealing ring (54) and the second sealing element (40).

2. The quick-connect coupling with dual-channel independent sealing according to claim 1, characterized in that, The first sealing element (30) has a convex ring (32) that abuts against the second spring (62). The convex ring (32) has a second sealing groove (321) for fitting and installing the second sealing ring (52). One end of the third flow cavity (41) is connected to the side wall of the second sealing element (40), and the other end of the third flow cavity (41) is connected to the end of the second sealing element (40) near the male connector (10).

3. The quick-connect coupling with dual-channel independent sealing according to claim 2, characterized in that, The convex ring (32) is used to divide the second flow cavity (31) into a third cavity (311) and a fourth cavity (312). The third cavity (311) is internally threaded with a first pipe joint (70). The first pipe joint (70) is provided with a fourth flow cavity (71). The fourth flow cavity (71), the third flow cavity (41) and the first channel (11) are sequentially connected to form the first flow channel.

4. The quick-connect coupling with dual-channel independent sealing according to claim 3, characterized in that, The third flow cavity (41) includes a fifth cavity (411) and a sixth cavity (412) that are perpendicularly connected to each other. The fifth cavity (411) extends through the opposite sides of the second seal (40). The fifth cavity (411) is connected to the fourth flow cavity (71), and the sixth cavity (412) is connected to the first channel (11).

5. The quick-connect coupling with dual-channel independent sealing according to claim 3, characterized in that, The first sealing element (30) is provided with at least one second through groove (34) at one end located in the second cavity (212), and the second through groove (34) is connected to the second cavity (212). The second sealing element (40) is provided with at least one third through groove (42) at one end located in the fourth cavity (312), and the third through groove (42) is connected to the fourth cavity (312).

6. The quick-connect coupling with dual-channel independent sealing according to claim 1, characterized in that, The male connector (10) is provided with a second pipe connector (13) and a third pipe connector (14) at a distance from the female connector (20). The second pipe connector (13) is connected to the first channel (11), and the third pipe connector (14) is connected to the second channel (12). Both the second pipe connector (13) and the third pipe connector (14) are used to connect to an external flow pipe.

7. The quick-connect coupling with dual-channel independent sealing according to claim 6, characterized in that, The male connector (10) is provided with a limiting boss (15) arranged adjacent to the third sealing ring (53). The limiting boss (15) is used to abut against the first sealing element (30). The limiting boss (15), the second pipe connector (13) and the third pipe connector (14) are respectively integrally formed with the male connector (10); or, the limiting boss (15) and the male connector (10) are integrally formed, and the second pipe connector (13) and the third pipe connector (14) are respectively threaded to the male connector (10).

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