Quick connector with non-return function

Abstract

The utility model provides a quick interface with check function, including a conversion interface, the outer wall of conversion interface is equipped with the external thread joint of fixed on the pipeline, the inner wall of conversion interface is equipped with the internal thread joint of connecting external accessory, the central sleeve of conversion interface is equipped with a check valve core, the outer wall end of check valve core is equipped with a limit slot of circumferential arrangement, is inlayed with first sealing ring in limit slot, check valve core passes through conversion interface, and first sealing ring is with the bottom of conversion interface and is in abutment, still be equipped with spring between check valve core and conversion interface, be equipped with a through -going channel on check valve core, the radial direction of channel is opened along check valve core, and the above of channel is located in limit slot, is equipped with second sealing ring below the head of conversion interface. The utility model discloses a sealing ring and channel are equipped with check valve core, when not installing external function accessory, sealing ring blocks the lower end import, guarantees that medium will not flow out, when installing external accessory, check valve core is pushed down after.

Description

Technical Field

[0001] This utility model relates to the field of exhaust valves, specifically to a quick interface with a check valve function. Background Technology

[0002] During the operation of HVAC and liquid cooling piping systems, a spare interface is usually reserved or some parts may need to be maintained or replaced later. In such cases, the system is often shut down or some piping functions are disabled, which seriously affects the normal use of the piping system. Utility Model Content

[0003] In view of the problems existing in the prior art, this utility model provides a fast interface with a backflow prevention function to solve the problems of at least one of the above-mentioned technologies.

[0004] The technical solution of this utility model is: a quick interface with a check valve function, including a conversion interface, characterized in that the outer wall of the conversion interface is provided with an external thread interface fixed on the pipeline, the inner wall of the conversion interface is provided with an internal thread interface for connecting external accessories, a check valve core is sleeved in the center of the conversion interface, the outer end of the check valve core is provided with a circumferentially arranged limiting groove, a first sealing ring is embedded in the limiting groove, the check valve core passes through the conversion interface, and the first sealing ring abuts against the bottom of the conversion interface;

[0005] A spring is also provided between the check valve core and the conversion interface. A through channel is provided on the check valve core. The channel is opened along the radial direction of the check valve core and is located above the limiting groove. A second sealing ring is provided below the head end of the conversion interface.

[0006] This utility model features a check valve core with a sealing ring and a channel. When no external functional accessories are installed, the sealing ring blocks the lower inlet, preventing the medium from flowing out. When external accessories are installed, the check valve core is pushed downwards, causing the sealing ring to disengage from the lower inlet position, allowing the inlet to communicate with the channel provided on it. At this time, the medium will flow towards the connected external accessories to ensure normal use.

[0007] Further preferably, both the first sealing ring and the second sealing ring are O-rings, and the outer diameter of the first sealing ring is smaller than the outer diameter of the second sealing ring.

[0008] It can provide different sealing effects.

[0009] Further preferably, the top of the check valve core is lower than the top of the conversion interface.

[0010] It will not affect the normal use of the conversion interface.

[0011] Further preferably, the conversion interface includes a head end and a column body, the surface of the column body is provided with an external thread interface, and the connection between the head end and the column body is provided with a second sealing ring.

[0012] This invention optimizes the sealing performance of the connection between the conversion interface and other components through the second sealing ring.

[0013] Further preferably, the length of the spring is not greater than the length of the check valve core.

[0014] The spring of this utility model functions as follows: when the external accessories are not installed, its force causes the check valve core to return to its original position, driving the O-ring seal on it to move upward and block the lower end of the conversion interface, thereby preventing the medium from leaking outward. When the external accessories are installed, the accessory interface pushes the check valve core downward, and the through hole on it communicates with the medium below, ensuring that the medium flows towards the external accessories. Attached Figure Description

[0015] Figure 1 This is an exploded view of the present invention;

[0016] Figure 2 This is a view of the non-return state of this utility model;

[0017] Figure 3 This is a cross-sectional view of the present invention in the check valve state;

[0018] Figure 4 This is a view showing the connection status of the external accessories of this utility model.

[0019] Figure 5 This is a cross-sectional view of the external accessories of this utility model in the connected state.

[0020] In the diagram: 1. Conversion interface, 2. Check valve core, 3. First sealing ring, 4. Spring, 5. Second sealing ring, 6. Limiting groove, 7. Channel. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] like Figures 1-5As shown, a quick-connect interface with a check valve function includes a conversion interface 1. The outer wall of the conversion interface has an external threaded interface fixed to the pipeline, and the inner wall of the conversion interface has an internal threaded interface for connecting external fittings. A check valve core 2 is sleeved in the center of the conversion interface. The outer end of the check valve core has a circumferentially arranged limiting groove 6. A first sealing ring 3 is embedded in the limiting groove. The check valve core passes through the conversion interface, and the first sealing ring abuts against the bottom of the conversion interface. A spring 4 is also provided between the check valve core and the conversion interface. A through channel 7 is provided on the check valve core. The channel is opened along the radial direction of the check valve core and is located above the limiting groove. A second sealing ring 5 is provided below the head end of the conversion interface.

[0023] This utility model features a check valve core with a sealing ring and a channel. When no external functional accessories are installed, the sealing ring blocks the lower inlet, preventing the medium from flowing out. When external accessories are installed, the check valve core is pushed downwards, causing the sealing ring to disengage from the lower inlet position, allowing the inlet to communicate with the channel provided on it. At this time, the medium will flow towards the connected external accessories to ensure normal use.

[0024] Further optimization involves both the first and second sealing rings being O-rings, with the outer diameter of the first sealing ring being smaller than that of the second sealing ring. This allows for different sealing performance.

[0025] Further optimization involves placing the top of the check valve core lower than the top of the conversion port. This does not affect the normal operation of the conversion port.

[0026] Further preferably, the conversion interface includes a head end and a column body, the surface of which is provided with an external thread interface, and a second sealing ring is provided at the connection between the head end and the column body. This invention optimizes the sealing performance of the connection between the conversion interface and other components through the second sealing ring.

[0027] Further preferably, the length of the spring is no greater than the length of the check valve core. The function of the spring in this invention is as follows: before the external accessories are installed, its force causes the check valve core to return to its original position, driving the O-ring seal on it to move upwards and block the lower end of the conversion interface, thereby preventing media leakage. When the external accessories are installed, the accessory interface pushes the check valve core downwards, at which point the through hole on it communicates with the media below, ensuring that the media flows towards the external accessories.

[0028] The above are merely preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A fast interface with a check function, comprising a conversion interface, characterized in that, The outer wall of the conversion interface is provided with an external thread interface fixed on the pipeline, and the inner wall of the conversion interface is provided with an internal thread interface for connecting external accessories. A check valve core is sleeved in the center of the conversion interface. The outer end of the check valve core is provided with a circumferentially arranged limiting groove. A first sealing ring is embedded in the limiting groove. The check valve core passes through the conversion interface, and the first sealing ring abuts against the bottom of the conversion interface. A spring is also provided between the check valve core and the conversion interface. A through channel is provided on the check valve core. The channel is opened along the radial direction of the check valve core and is located above the limiting groove. A second sealing ring is provided below the head end of the conversion interface.

2. A fast interface with a check function according to claim 1, characterized in that: Both the first sealing ring and the second sealing ring are O-rings, and the outer diameter of the first sealing ring is smaller than the outer diameter of the second sealing ring.

3. A fast interface with a check function according to claim 1, characterized in that: The top of the check valve core is lower than the top of the conversion interface.

4. A fast interface with a check function according to claim 1, characterized in that: The conversion interface includes a head end and a column body. The surface of the column body is provided with an external thread interface, and the connection between the head end and the column body is provided with a second sealing ring.

5. A fast interface with a check function according to claim 1, characterized in that: The length of the spring is not greater than the length of the check valve core.

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