Quick coupling device for pipes

Abstract

The utility model provides a kind of pipeline quick coupling device, it includes mutually cooperating along center axis butt joint first connector pipe and second connector pipe, and still include check valve assembly, first and second magnetic parts.Check valve assembly is arranged in one of first and second connector pipe, check valve assembly includes fixed valve piece and movable valve piece, fixed valve piece is fixedly configured, movable valve piece is configured as can be relatively active along center axis and can be moved and close with fixed valve piece.Respectively in the other of first and second connector pipe, first magnetic part is fixedly arranged, first magnetic part has at least one first north pole and south pole, which is arranged around the center axis, and the number of first north pole and south pole is the same.The second magnetic part is arranged in the movable valve piece, and has at least one second north pole, south pole, which is arranged around the center axis, and the number of first north pole and first south pole is the same, the number of first north pole and second north pole is the same, and the number of first and second south pole is the same.

Description

Technical Field

[0001] This utility model relates to quick-connect pipe fittings, and more particularly to a quick-connect pipe fitting device with a magnetically driven valve body. Background Technology

[0002] In modern server or rack-mount liquid cooling systems, quick-connect couplings are commonly used in the piping for easy localized maintenance. Typical quick-connect couplings usually have a spring-driven or mechanism-linked valve body; when the quick-connect is opened, the valve body closes to prevent leakage. However, generally, the aforementioned coupling actuation methods use axial force to move the valve body, so the valve body only closes after the quick-connect is opened. Furthermore, the valve body opens during the connection process, so leakage is still possible and could damage the equipment. Utility Model Content

[0003] The purpose of this invention is to provide a quick-connect device for pipelines with a magnetically driven valve body.

[0004] This utility model discloses a quick-connect pipe device, comprising a first connecting pipe and a second connecting pipe that are mated and connected along a central axis, and further comprising a check valve assembly, a first magnetic element, and a second magnetic element. The check valve assembly is disposed within one of the first and second connecting pipes, and includes a fixed valve and a movable valve. The fixed valve is fixedly configured, while the movable valve is configured to move relative to the fixed valve along the central axis and abut against it to close. The first magnetic element is fixedly disposed within the other of the first and second connecting pipes, and has at least one first north pole and at least one first south pole arranged interlaced around the central axis, with the number of first north poles and at least one first south poles being equal. The second magnetic element is disposed within the movable valve, and has at least one second north pole and at least one second south pole arranged interlaced around the central axis, with the number of first north poles and at least one first south poles being equal, the number of first north poles and at least one second north poles being equal, and the number of first south poles and at least one second south poles being equal. The first and second connecting pipes are rotatable relative to each other between a mating position and a locking position. When the first and second connecting pipes are in the mating position, at least one first north pole is aligned with at least one second south pole, and at least one first south pole is aligned with at least one second north pole, causing the first and second magnetic elements to attract each other, thereby closing the movable valve and the fixed valve. When the first and second connecting pipes are in the locking position, at least one first north pole is aligned with at least one second north pole, and at least one first south pole is aligned with at least one second south pole, causing the second magnetic element to repel the first magnetic element, thereby separating the movable valve and the fixed valve.

[0005] In one embodiment of this utility model, the fixed valve is a channel structure, and the movable valve is a plug.

[0006] In one embodiment of this utility model, the fixed valve is a plug, and the movable valve is a channel structure.

[0007] In one embodiment of this utility model, a movable valve is connected to an elastic element, and the elastic element is pre-pressed against the movable valve towards the fixed valve so that the movable valve and the fixed valve are pre-closed.

[0008] In one embodiment of the present invention, at least one first north-pointing pole is a single first north-pointing pole, the at least one first south-pointing pole is a single first south-pointing pole, the at least one second north-pointing pole is a single second north-pointing pole, and the at least one second south-pointing pole is a single second south-pointing pole.

[0009] In one embodiment of this utility model, at least one first north pole is an even number of first north poles, at least one first south pole is an even number of first south poles, at least one second north pole is an even number of second north poles, and at least one second south pole is an even number of second south poles.

[0010] In one embodiment of this utility model, a longitudinal groove is provided at the opening of one of the first and second connecting pipes, and the longitudinal groove is connected to one end of a circumferential groove. The other of the first and second connecting pipes is provided with a sliding tenon. When the first connecting pipe is axially connected to the second connecting pipe, the first and second connecting pipes are located in the opposite connection position and the sliding tenon enters the longitudinal groove.

[0011] In one embodiment of this utility model, the first connecting pipe and the second connecting pipe can be rotated to a locking position so that the sliding tenon can move along the circumferential groove to the other end of the circumferential groove.

[0012] In one embodiment of this utility model, the extension angle of the circumferential groove segment is 180 degrees.

[0013] In one embodiment of this utility model, the extension angle of the circumferential groove segment is 90 degrees.

[0014] In summary, when the first pipe is connected to the second pipe and is not yet locked, the check valve assembly is closed by magnetic attraction to prevent leakage in the first or second pipe in which it is located. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the pipeline quick-connect device in the unloaded state according to the first embodiment of this utility model; Figure 2 This is a partial three-dimensional sectional view of the quick-connect pipe device of the first embodiment of the present invention in the unloaded state; Figure 3 This is another three-dimensional partial sectional view of the quick-connect pipe device of the first embodiment of the present invention in the unloaded state; Figure 4This is a three-dimensional schematic diagram of the quick-connect pipe device according to the first embodiment of the present invention, showing the docking state and relative docking positions. Figure 5 This is a cross-sectional view of the quick-connect pipe device according to the first embodiment of the present invention, showing the docking state and relative docking positions. Figure 6 This is a three-dimensional schematic diagram of the quick-connect pipe device in the docking state and locked relative position according to the first embodiment of the present utility model. Figure 7 This is a cross-sectional view of the quick-connect pipe device of the first embodiment of the present invention in the docking state and locked relative position; Figure 8 This is a three-dimensional schematic diagram of the pipeline quick-connect device in the unloaded state according to the second embodiment of the present utility model; Figure 9 This is a partial three-dimensional sectional view of the second connector of the quick-connect pipe device according to the second embodiment of the present utility model; Figure 10 This is a cross-sectional view of the quick-connect pipe device according to the second embodiment of the present invention, showing the docking state and relative docking positions. Figure 11 This is a cross-sectional view of the quick-connect pipe device in the docking state and locked relative position according to the second embodiment of the present invention.

[0016] Explanation of markings in the diagram: 10: First takeover; 20: Second takeover; 30: Central axis; 100, 100a: First magnetic component; 110, 110a: First refers to the North Pole; 120, 120a: First south pole; 200, 200a: Second magnetic component; 210, 210a: The second refers to the North Pole; 220, 220a: Second south pole; 300, 300a: Check valve assembly; 310, 310a: Fixed valve components; 320, 320a: Moving valve; 400, 400a: Elastic components; 510: Locking channel; 511: Longitudinal groove section; 512: Circumferential groove section; 520: Tenon. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention. In the description of the present invention, it should be understood that the terms "front side", "rear side", "left side", "right side", "front end", "rear end", "end", "longitudinal", "lateral", "vertical", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present 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. Therefore, they should not be construed as limiting conditions of the present invention.

[0018] Unless otherwise defined, the terms "substantially" and "approximately" are used to describe and narrate small changes. When used in connection with an event or situation, these terms may include the exact moment the event or situation occurred, or an approximate point in time. For example, when used in connection with a numerical value, these terms may include a range of variation less than or equal to ±10% of that value, such as less than or equal to ±5%, less than or equal to ±4%, less than or equal to ±3%, less than or equal to ±2%, less than or equal to ±1%, less than or equal to ±0.5%, less than or equal to ±0.1%, or less than or equal to ±0.05%.

[0019] The detailed description and technical content of this utility model will be explained in conjunction with the accompanying drawings. However, the accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0020] Figure 1 This is a three-dimensional schematic diagram of the pipeline quick-connect device in the unloaded state according to the first embodiment of this utility model. Figure 2 This is a partial three-dimensional cross-sectional view of the quick-connect pipe device in the unloaded state according to the first embodiment of this utility model. Figure 3 This is another partial three-dimensional sectional view of the quick-connect pipe device of the first embodiment of this utility model in its unloaded state. (See also...) Figure 1 The first embodiment of this utility model provides a quick-connect pipe device, which includes a first connecting pipe 10 and a second connecting pipe 20 that are mated together along a central axis 30, and also includes a check valve assembly 300, a first magnetic element 100 and a second magnetic element 200. The first connecting pipe 10 and the second connecting pipe 20 are respectively connected to a pipe (not shown in the figure), and the first connecting pipe 10 can be connected to the second connecting pipe 20 to connect the aforementioned pipes.

[0021] A check valve assembly 300 is disposed within one of the first connecting pipe 10 and the second connecting pipe 20. In this embodiment, the check valve assembly 300 is disposed within the second connecting pipe 20. The check valve assembly 300 includes a fixed valve member 310 and a movable valve member 320. The fixed valve member 310 is fixedly configured, and the movable valve member 320 is configured to move relative to the fixed valve member 310 along the central axis 30 and abut against the fixed valve member 310 to close. The movable valve member 320 is further connected to an elastic member 400, which is pre-pressed against the movable valve member 320 towards the fixed valve member 310 so that the movable valve member 320 and the fixed valve member 310 are pre-closed. In this embodiment, the fixed valve member 310 is a channel structure, and the movable valve member 320 is a plug inserted inside the fixed valve member 310. The elastic member 400 is a spring, and the elastic member 400 abuts against the inner wall of the second connecting pipe 20 and the movable valve member 320.

[0022] A first magnetic element 100 is fixedly disposed within the other of the first connector 10 and the second connector 20. In this embodiment, the first magnetic element 100 is fixedly disposed within the first connector 10. The first magnetic element 100 has at least one first north pole 110 (N pole) and at least one first south pole 120 (S pole) arranged interlaced around the central axis 30. The number of first north poles 110 and at least one south pole 120 is the same. In this embodiment, there is an even number of first north poles 110 and an even number of first south poles 120. Specifically, there are two first north poles 110 and two first south poles 120, meaning that the angular difference between each first north pole 110 and the adjacent first south pole 120 relative to the central axis 30 is 90 degrees.

[0023] A second magnetic element 200 is disposed in the movable valve element 320. The second magnetic element 200 has at least one second north pole 210 and at least one second south pole 220 arranged interlaced around the central axis. The number of at least one first north pole 110 and at least one first south pole 120 are the same, the number of at least one first north pole 110 and at least one second north pole 210 are the same, and the number of at least one first south pole 120 and at least one second south pole 220 are the same. In this embodiment, there is an even number of second north poles 210 and an even number of second south poles 220. Specifically, there are two second north poles 210 and two second south poles 220, that is, the angular difference between each second north pole 210 and the adjacent second south pole 220 relative to the central axis 30 is 90 degrees.

[0024] However, this utility model is not limited to the aforementioned embodiments. In the simplest embodiment, the first magnetic element 100 may be provided with a single first north pole 110 and a single first south pole 120, and the second magnetic element 200 may also be provided with a single second north pole 210 and a single second south pole 220, thus achieving the effect of this utility model. That is to say, the angular difference between the first north pole 110 and the adjacent first south pole 120 relative to the central axis 30 is 180 degrees.

[0025] See Figure 4 and Figure 5 The first connector 10 and the second connector 20 can rotate relative to each other between a mating position and a locking position, such as... Figure 4 As shown. When the first connector 10 and the second connector 20 are in the docking relative position, at least one first north pole 110 is aligned with at least one second south pole 220 and at least one first south pole 120 is aligned with at least one second north pole 210, so that the first magnetic element 100 and the second magnetic element 200 attract each other, thereby causing the movable valve and the fixed valve 310 to come together and close.

[0026] To limit the travel of the docking and relative rotation, a locking groove 510 is provided at the opening of one of the first connector 10 and the second connector 20, and a sliding tenon 520 is provided at the other of the first connector 10 and the second connector 20. In this embodiment, the locking groove 510 is provided in the first connector 10, and the sliding tenon 520 is provided in the second connector 20. The locking groove 510 has a longitudinal groove segment 511 and a circumferential groove segment 512. The longitudinal groove segment 511 extends parallel to the central axis 30, and the circumferential groove segment 512 extends circumferentially along the central axis 30. In accordance with the polarity configuration of the aforementioned first magnetic element 100 and second magnetic element 200, the circumferential groove segment 512 extends at an angle of 90 degrees. The longitudinal groove segment 511 connects to one end of the circumferential groove segment 512. When the first connector 10 is axially docked with the second connector 20, the first connector 10 and the second connector 20 are in a docking relative position and the sliding tenon 520 enters the longitudinal groove segment 511.

[0027] See Figure 6 and Figure 7 Locking relative position, such as Figure 6 As shown, the first connector 10 and the second connector 20 can rotate 90 degrees relative to each other, causing the sliding tenon 520 to move along the circumferential groove 512 to the other end of the circumferential groove 512 and thereby be positioned in the locked position. When the first connector 10 and the second connector 20 are in the locked relative position, at least one first north pole 110 aligns with at least one second north pole 210 and at least one first south pole 120 aligns with at least one second south pole 220, causing the second magnetic element 200 to repel the first magnetic element 100 and thus separating the movable valve from the fixed valve element 310.

[0028] Corresponding to the configuration of a single first north pole 110, a single first south pole 120, a single second north pole 210, and a single second south pole 220, the extension angle of this circumferential groove segment can also be 180 degrees.

[0029] With an even number of first north poles 110, an even number of second north poles 210, and an even number of second north poles 210, depending on the even number, the angular difference between each first north pole 110 and its adjacent first south pole 120 relative to the central axis 30 can be 60 degrees, 45 degrees, 30 degrees, or 15 degrees. Correspondingly, the angular difference between each second north pole 210 and its adjacent second south pole 220 relative to the central axis 30 can also be 60 degrees, 45 degrees, 30 degrees, or 15 degrees. In other words, the extension angle of the circumferential groove segment can also be 60 degrees, 45 degrees, 30 degrees, or 15 degrees.

[0030] With the aforementioned structure, when the first connecting pipe 10 or the second connecting pipe 20 is separated, the fixed valve member 310 and the movable valve member 320 are driven together by the elastic force of the spring, causing the check valve assembly 300 to close and preventing leakage in the pipeline connected to the second connecting pipe 20 where the check valve assembly 300 is located. When the first connecting pipe 10 is connected to the second connecting pipe 20 and is not yet locked, the fixed valve member 310 and the movable valve member 320 are driven together by magnetic attraction, causing the check valve assembly 300 to close and preventing leakage in the pipeline connected to the second connecting pipe 20 where the check valve assembly 300 is located. When the first connecting pipe 10 is connected to the second connecting pipe 20 and locked, the fixed valve member 310 and the movable valve member 320 are driven apart by magnetic repulsion, causing the check valve assembly 300 to open and connecting the first connecting pipe 10 and the second connecting pipe 20.

[0031] Figure 8 This is a three-dimensional schematic diagram of the pipeline quick-connect device in the unloaded state according to the second embodiment of this utility model. Figure 9 This is a three-dimensional partial sectional view of the second connector of the quick-connect pipe device according to the second embodiment of the present utility model. Figure 10 This is a cross-sectional view of the quick-connect pipe device of the second embodiment of the present invention in the docking state and relative docking position. Figure 11 This is a cross-sectional view of the quick-connect pipe device in the docking state and locked relative position according to the second embodiment of the present invention.

[0032] See Figures 8 to 11The second embodiment of this utility model provides a quick-connect pipe device, which includes a first connecting pipe 10 and a second connecting pipe 20 that are mated together along a central axis 30, and also includes a check valve assembly 300a, a first magnetic element 100a, and a second magnetic element 200a. The first connecting pipe 10 and the second connecting pipe 20 are respectively connected to a pipe (not shown in the figure), and the first connecting pipe 10 can be connected to the second connecting pipe 20 to connect the aforementioned pipes. The quick-connect pipe device in this embodiment can be used in conjunction with the first embodiment. Therefore, the quick-connect pipe device in this embodiment is additionally provided with a structure as shown in the first embodiment. In this embodiment, a check valve assembly 300a is disposed in the first connecting pipe 10. The check valve assembly 300a includes a fixed valve member 310a and a movable valve member 320a. The fixed valve member 310a is fixedly configured, and the movable valve member 320a is configured to move relative to the fixed valve member 310a along the central axis 30 and abut against the fixed valve member 310a to close. The movable valve member 320a is further connected to an elastic member 400a, which is pre-pressed against the movable valve member 320a towards the fixed valve member 310a so that the movable valve member 320a and the fixed valve member 310a are pre-closed. In this embodiment, the movable valve member 320a is a channel structure, and the fixed valve member 310a is a plug body inserted inside the movable valve member 320a. The elastic member 400a is a spring, and the elastic member 400a abuts against the inner wall of the first connecting pipe 10 and the movable valve member 320a.

[0033] In this embodiment, the first magnetic element 100a is fixedly disposed in the second connector 20. The first magnetic element 100a has at least one first north pole 110a (N pole) and at least one first south pole 120a (S pole) arranged interlaced around the central axis 30, with the number of first north poles 110a and at least one south pole 120a being the same. In this embodiment, there is an even number of first north poles 110a and at least an even number of first south poles 120a. Specifically, there are two first north poles 110a and two first south poles 120a, that is, the angular difference between each first north pole 110a and the adjacent first south pole 120a relative to the central axis 30 is 90 degrees.

[0034] The second magnetic element 200 is disposed on the movable valve 320a. The second magnetic element 200a has at least one second north pole 210a and at least one second south pole 220a arranged interlaced around the central axis. The number of at least one first north pole 110a is the same as the number of at least one first south pole 120a, the number of at least one first north pole 110a is the same as the number of at least one second north pole 210a, and the number of at least one first south pole 120a is the same as the number of at least one second south pole 220a. In this embodiment, there is an even number of second north poles 210a and an even number of second south poles 220a. Specifically, there are two second north poles 210a and two second south poles 220a, that is, the angular difference between each second north pole 210a and the adjacent second south pole 220a relative to the central axis 30 is 90 degrees.

[0035] However, this utility model is not limited to the aforementioned embodiments. In the simplest embodiment, the first magnetic element 100a may be provided with a single first north pole 110a and a single first south pole 120a, and the second magnetic element 200a may also be provided with a single second north pole 210a and a single first south pole 220a, thus achieving the effect of this utility model. That is to say, the angular difference between the first north pole 110a and the adjacent first south pole 120a relative to the central axis 30 is 180 degrees.

[0036] The first connector 10 and the second connector 20 are rotatable relative to each other between a mating position and a locking position, wherein the mating position is as follows: Figure 8 and Figure 9 As shown. When the first connector 10 and the second connector 20 are in the docking relative position, at least one first north pole 110a is aligned with at least one second south pole 220a and at least one first south pole 120a is aligned with at least one second north pole 210a, so that the first magnetic element 100a and the second magnetic element 200a attract each other, thereby causing the movable valve 320a and the fixed valve 310a to come together and close.

[0037] To limit the travel of the docking and relative rotation, a locking groove 510 is provided at the opening of one of the first connector 10 and the second connector 20, and a sliding tenon 520 is provided at the other of the first connector 10 and the second connector 20. In this embodiment, the locking groove 510 is provided in the first connector 10, and the sliding tenon 520 is provided in the second connector 20. The locking groove 510 has a longitudinal groove segment 511 and a circumferential groove segment 512. The longitudinal groove segment 511 extends parallel to the central axis 30, and the circumferential groove segment 512 extends circumferentially along the central axis 30. In accordance with the polarity configuration of the aforementioned first magnetic element 100 and second magnetic element 200, the circumferential groove segment 512 extends at an angle of 90 degrees. The longitudinal groove segment 511 connects to one end of the circumferential groove segment 512. When the first connector 10 is axially docked with the second connector 20, the first connector 10 and the second connector 20 are in a docking relative position and the sliding tenon 520 enters the longitudinal groove segment 511.

[0038] Lock relative position such as Figure 10 and Figure 11 As shown, the first connector 10 and the second connector 20 can rotate 90 degrees relative to each other, causing the sliding tenon 520 to move along the circumferential groove 512 to the other end of the circumferential groove 512 and thereby be positioned in the locked position. When the first connector 10 and the second connector 20 are in the locked relative position, at least one first north pole 110a aligns with at least one second north pole 210a and at least one first south pole 120a aligns with at least one second south pole 220a, causing the second magnetic element 200a to repel the first magnetic element 100a, thereby separating the movable valve 320a from the fixed valve 310a.

[0039] With the aforementioned structure, when the first connecting pipe 10 or the second connecting pipe 20 is separated, the fixed valve members 310, 310a and the movable valve members 320, 320a are driven together by the elastic force of the springs, causing the check valve assemblies 300, 300a to close and prevent leakage in the pipelines connected to the first connecting pipe 10 and the second connecting pipe 20. When the first connecting pipe 10 is connected to the second connecting pipe 20 and is not yet locked, the check valve assemblies 300, 300a are driven to close by magnetic attraction to prevent leakage in the pipelines connected to the first connecting pipe 10 and the second connecting pipe 20 respectively. When the first connecting pipe 10 is connected to the second connecting pipe 20 and locked, the fixed valve members 310, 310a and the movable valve members 320, 320a are driven to separate by magnetic repulsion, causing the check valve assemblies 300, 300a to open and connect the first connecting pipe 10 and the second connecting pipe 20.

[0040] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model, or reasonable combinations of features and solutions from various embodiments, are all within the protection scope of the present utility model.

Claims

1. A quick-connect device for pipelines, characterized in that, include: A first connector and a second connector are connected together along a central axis. A check valve assembly is disposed within one of the first connecting pipe and the second connecting pipe. The check valve assembly includes a fixed valve member and a movable valve member. The fixed valve member is fixedly configured, and the movable valve member is configured to be movable relative to the central axis and to move and abut against the fixed valve member to close. A first magnetic element is fixedly disposed within the other of the first and second connecting pipes. The first magnetic element has at least one first north pole and at least one first south pole arranged interlaced around the central axis, wherein the number of the at least one first north pole and the number of the at least one first south pole are equal. A second magnetic element is disposed on the movable valve member. The second magnetic element has at least one second north pole and at least one second south pole arranged interlaced around the central axis. The number of at least one first north pole and at least one first south pole are equal, the number of at least one first north pole and at least one second north pole are equal, and the number of at least one first south pole and at least one second south pole are equal. The first and second connectors are rotatable relative to each other between a docking position and a locking position. When the first and second connectors are in the docking position, the at least one first north pole is aligned with the at least one second south pole and the at least one first south pole is aligned with the at least one second north pole, causing the first magnetic element and the second magnetic element to attract each other, thereby causing the movable valve and the fixed valve to come together and close. When the first connector and the second connector are in the locked relative position, the at least one first north pole is aligned with the at least one second north pole and the at least one first south pole is aligned with the at least one second south pole, so that the second magnetic element and the first magnetic element repel each other, thereby separating the movable valve from the fixed valve.

2. The quick-connect pipe device as described in claim 1, characterized in that, The fixed valve is a channel structure, and the movable valve is a plug.

3. The quick-connect pipe device as described in claim 1, characterized in that, The fixed valve is a plug, and the movable valve is a channel structure.

4. The quick-connect pipe device as described in claim 1, characterized in that, The movable valve is connected to an elastic element, which is pre-pressed against the movable valve towards the fixed valve so that the movable valve and the fixed valve are pre-closed.

5. The quick-connect pipe device as described in claim 1, characterized in that, The at least one first north pole is a single first north pole, the at least one first south pole is a single first south pole, the at least one second north pole is a single second north pole, and the at least one second south pole is a single second south pole.

6. The quick-connect pipe device as described in claim 1, characterized in that, The at least one first north pole is an even number of first north poles, the at least one first south pole is an even number of first south poles, the at least one second north pole is an even number of second north poles, and the at least one second south pole is an even number of second south poles.

7. The quick-connect pipe device as described in claim 1, characterized in that, A longitudinal groove is provided at the opening of one of the first and second connecting pipes, and the longitudinal groove is connected to one end of a circumferential groove. The other of the first and second connecting pipes is provided with a sliding tenon. When the first connecting pipe is axially connected to the second connecting pipe, the first connecting pipe and the second connecting pipe are located at the docking relative position and the sliding tenon enters the longitudinal groove section.

8. The quick-connect pipe device as described in claim 7, characterized in that, The first and second connecting pipes can be rotated relative to each other to a locked position, causing the sliding tenon to move along the circumferential groove to the other end of the circumferential groove.

9. The quick-connect pipe device as described in claim 7, characterized in that, The at least one first north-pointing finger is a single first north-pointing finger, the at least one first south-pointing finger is a single first south-pointing finger, the at least one second north-pointing finger is a single second north-pointing finger, the at least one second south-pointing finger is a single second south-pointing finger, and the extension angle of the circumferential groove segment is 180 degrees.

10. The quick-connect pipe device as described in claim 7, characterized in that, The at least one first north pole is an even number of first north poles, the at least one first south pole is an even number of first south poles, the at least one second north pole is an even number of second north poles, the at least one second south pole is an even number of second south poles, and the extension angle of the circumferential groove segment is 90 degrees.

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