Quick connector for air pipe

Abstract

The utility model belongs to the technical field of quick connectors, and particularly relates to an air pipe quick connector which comprises a pipe connecting base, a clamping sleeve base, a clamping sleeve, a valve element and an air connecting pipe which are coaxially arranged, one end of the clamping sleeve base is sleeved on the periphery of the pipe connecting base in a sealed mode, and the other end of the clamping sleeve base is inserted into the clamping sleeve in a sealed mode. An air chamber matched with the valve element is jointly formed by inner holes of the pipe connecting base and the clamping sleeve base. The valve element is inserted into the air chamber in a sealed mode, and one end of the valve element abuts against the pipe connecting base through the valve element spring. The gas receiving pipe is inserted into the gas chamber in a sealing manner, and is coaxially connected to the valve core through a sealing connecting piece; an exhaust hole is formed in the valve element, and a center hole communicated with the valve element is formed in the air connecting pipe; an annular groove used for being sleeved with the clamping base spring is formed in the clamping sleeve base, and a limiting table is arranged on the inner wall of the clamping sleeve. The clamping sleeve is in threaded connection with the clamping base sleeve so that the limiting table can abut against the clamping base spring. Therefore, the technical problems that a quick connector in the prior art is troublesome in connection and limited in application scene are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of quick connectors, and particularly relates to a pneumatic tube quick connector. Background Art

[0002] A quick connector is a component used for quickly connecting pipes, which allows users to quickly connect or disconnect pipes without the need for special tools or long operations. Such connectors are usually used in situations where frequent connection and disconnection are required, such as pneumatic tools, hydraulic systems, air pumps, applications for oxygen, carbon dioxide, air, natural gas, argon, hydrogen, hydrogen-argon mixture, and other applications where pipes or tools need to be quickly replaced.

[0003] In the utility model patent with the publication number CN215635613U, a safety quick connector is disclosed, which includes a connector center, a bolt body, a center outer sleeve, and a connector valve core. One end of the connector center is inserted into the bolt body and is threadedly connected thereto. The center outer sleeve is movably sleeved on the middle part of the connector center through an outer sleeve spring. A tapered hole is formed on the outer wall of the connector center, and a steel ball is movably arranged in the tapered hole. The center outer sleeve is provided with an inclined stop surface and a flat stop surface. The connector valve core is movably arranged in the connector center. A safety lock cap is threadedly connected to the outer wall of the bolt body. The center outer sleeve includes a front end face and a rear end face. The safety lock cap abuts and cooperates with the rear end face. A center limit end face is arranged on the side wall of the connector center, and the front end face is in limit cooperation with the center limit end face.

[0004] When the safety lock cap presses the front end face of the center outer sleeve against the center limit end face, the side wall of the steel ball abuts against the flat stop surface, and at this time, the steel ball is locked. When the safety lock cap unlocks the center outer sleeve, the center outer sleeve moves relative to the connector center, and the side wall of the steel ball abuts against the inclined stop surface, and at this time, the steel ball is unlocked. During use, even if an external force acts on the center outer sleeve, the center outer sleeve cannot be displaced due to the limitation of the safety lock cap, thereby avoiding damage to the human body and having high safety.

[0005] However, through testing, it is found that when the two ends of this safety quick connector are connected to pipes, they are both connected by threads. If the thread directions are opposite, it is easy for the thread connection to become loose due to the reverse force applied to the pipes, and it is difficult to ensure the tightness of the connection between the pipes and the connector. If the thread directions are the same, although it is easy to connect one of the pipes, the other pipe is prone to being twisted and deformed due to torsion, affecting the smooth transmission of gas. Therefore, this safety quick connector is time-consuming to operate and cannot meet the usage requirements of quickly disconnecting and reconnecting pipes. Therefore, this safety quick connector is more used in occasions with high safety requirements, and its applicable scenarios are limited. At the same time, this safety quick connector has a relatively complex structure, is very inconvenient to maintain, has a high maintenance cost, and poor economy.

[0006] Therefore, in view of the technical problems of connection trouble, complex structure and inconvenient maintenance of the quick connector in the prior art, a more reasonable technical solution needs to be provided to solve the current problems. Utility Model Content

[0007] The utility model aims to provide a trachea quick connector to solve the technical problems of the quick connector in the prior art, such as troublesome connection, complex structure and inconvenient maintenance.

[0008] In order to achieve the above-mentioned purpose, the utility model provides an air pipe quick connector, including a connecting pipe seat, a ferrule seat, a ferrule, a valve core and an air connecting pipe which are coaxially arranged, one end of the ferrule seat is sealingly sleeved on the outer periphery of the connecting pipe seat, and the other end is sealingly inserted in the ferrule, and the inner holes of the connecting pipe seat and the ferrule seat jointly form an air chamber adapted to the valve core; the valve core is sealingly inserted in the air chamber, and one end of the valve core presses against the connecting pipe seat through a valve core spring; the air connecting pipe is sealingly inserted in the air chamber, and the air connecting pipe is coaxially connected to the valve core through a sealing connector; the valve core is provided with an exhaust hole, and a central hole connected to the valve core is formed in the air connecting pipe;

[0009] The ferrule seat is provided with an annular groove for sleeve-mounting a ferrule spring, and the inner wall of the ferrule is provided with a limit platform; wherein the ferrule is threadedly connected to the ferrule sleeve so that the limit platform can be pressed against the ferrule spring.

[0010] Optionally, the air connecting pipe is provided with a plurality of limiting grooves spaced apart along the axial direction thereof, and the depth of the limiting grooves gradually becomes shallower in the direction approaching the valve core, so that locking teeth are formed on the pipe body of the air connecting pipe.

[0011] Optionally, a guide shaft is provided at the end of the valve core, one end of the valve core spring is sleeved on the guide shaft, and the other end is pressed against the connecting pipe seat; wherein, the valve core spring is configured as a disc spring.

[0012] Optionally, the sealing connector includes a rubber ring and a bushing, so that the bushing is embedded in the rubber ring, and the bushing is arranged at the junction of the valve core and the air connecting pipe.

[0013] Optionally, a positioning groove is provided on the valve core, and a ball is embedded in the ferrule seat; when the air connecting pipe is inserted into the air chamber, the ball is partially embedded in the positioning groove.

[0014] Optionally, a locking groove is provided on the ferrule seat, and a wire retaining ring is sleeved in the locking groove.

[0015] Optionally, the connecting pipe seat comprises a fixedly connected limiting section and an inserting section, the outer diameter of the inserting section is smaller than the limiting section; the connecting pipe seat is conical, and its outer diameter gradually increases in a direction approaching the valve core.

[0016] Optionally, a first sealing ring is sleeved on the connecting pipe seat, and the ferrule seat is pressed against the first sealing ring;

[0017] A mounting groove is arranged in the inner hole of the ferrule seat, and a second sealing ring is arranged in the mounting groove.

[0018] Optionally, the air pipe quick connector further comprises a flame-retardant gas plug, which is inserted into the inner hole of the connecting pipe seat.

[0019] The design of the air pipe quick connector allows the pneumatic tool to be quickly connected or disconnected through simple operations, which improves work efficiency. The sealing sleeve of the ferrule seat and the connecting pipe seat and the sealing plug of the air pipe ensure the tightness of the compressed air during transmission and prevent gas leakage. The valve core is pressed against the connecting pipe seat through the valve core spring to achieve the control of the air flow and ensure the stable supply of air flow. The exhaust hole on the valve core can quickly release the pressure when disconnecting, which improves the safety of operation. The center hole in the connecting pipe is connected to the valve core, which helps the smooth flow of air and reduces the air flow resistance.

[0020] The ferrule is connected to the ferrule seat by threads, and interacts with the ferrule spring through the limiter, providing a stable fixing and quick release mechanism. The valve core spring and the ferrule spring provide auxiliary force, making the operation of the valve core and the ferrule smoother and reducing the operating force. By moving the ferrule left and right, the user can easily connect and disconnect the air pipe, and the operation is simple and intuitive.

[0021] Through the above technical solution, the provided trachea quick connector can quickly cut off the compressed air supply when disconnected, reducing the risks caused by improper operation. Based on the design of the valve core spring, the gas can be quickly and reliably blocked to reduce gas leakage. The structural design of the valve core can reduce gas consumption, thereby achieving energy-saving effects. The matching accuracy of the valve core and the rubber ring enables the product to have a good blocking effect and a long service life. In addition, based on the structural design of the connecting seat and the air pipe, the pipeline can be quickly connected, thereby increasing its scope of application. At the same time, the trachea quick connector has a simple structure, is easy to maintain, and has good economy and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the main structure of a trachea quick connector provided by the utility model in one embodiment;

[0024] Figure 2 It is a schematic cross-sectional view of a trachea quick connector provided by the utility model in one embodiment; wherein, Figure 2 The products shown are mainly used for the transmission of oxygen and air;

[0025] Figure 3 It is a cross-sectional structural diagram of another embodiment of the trachea quick connector provided by the utility model; wherein, Figure 3 The products shown are mainly used for the transmission of natural gas;

[0026] Figure 4 : is a schematic cross-sectional view of a trachea quick connector provided by the utility model in another embodiment; wherein: Figure 4 The products shown are mainly used for the transmission of carbon dioxide.

[0027] In the above drawings: 1-pipe seat, 11-limiting section, 12-plug-in section, 2-ferrule seat, 3-ferrule, 4-valve core, 41-exhaust hole, 42-guide shaft, 5-air pipe, 51-limiting groove, 52-tooth, 6-valve core spring, 7-seat spring, 81-rubber ring, 82-bushing, 9-ball, 10-wire retaining ring, 101-first sealing ring, 102-fire-blocking gas plug, 103-second sealing ring. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is intended to help understand the present invention, but does not constitute a limitation on the present invention. The specific structural and functional details disclosed herein are only used to describe the embodiments of the present invention. However, the present invention can be embodied in many alternative forms, and it should not be understood that the present invention is limited to the embodiments described herein.

[0029] According to the specific embodiments of the present utility model, a quick tracheal connector is provided, which is used in occasions where frequent connection and disconnection are required, such as pneumatic tools, hydraulic systems, air pumps, applications for oxygen, carbon dioxide, air, natural gas, argon, hydrogen, hydrogen-argon mixture, and other applications where rapid replacement of pipelines or tools is needed. Figures 1 to 4 Specific embodiments are shown, in which, Figure 2 The shown product is mainly applied to the transmission of oxygen and air; Figure 3 The shown product is mainly applied to the transmission of natural gas; Figure 4 The shown product is mainly applied to the transmission of carbon dioxide. For Figures 2 to 4 the selection, different quick tracheal connectors can be flexibly selected and matched according to the actual application scenario.

[0030] Refer to Figures 1 to 4 As shown, the quick tracheal connector includes a connecting pipe seat 1, a ferrule seat 2, a ferrule 3, a valve core 4, and a connecting trachea 5 arranged coaxially. One end of the ferrule seat 2 is hermetically sleeved on the outer periphery of the connecting pipe seat 1, and the other end is hermetically inserted into the ferrule 3. The inner holes of the connecting pipe seat 1 and the ferrule seat 2 together form an air chamber adapted to the valve core 4; the valve core 4 is hermetically inserted into the air chamber, and one end thereof is pressed against the connecting pipe seat 1 by a valve core spring 6; the connecting trachea 5 is hermetically inserted into the air chamber, and the connecting trachea 5 is coaxially connected to the valve core 4 through a sealing connector; an exhaust hole 41 is provided on the valve core 4, and a central hole communicating with the valve core 4 is formed in the connecting trachea 5; a ring groove for sleeving a ferrule spring 7 is provided on the ferrule seat 2, and a limiting platform is provided on the inner wall of the ferrule 3; wherein, the ferrule 3 is threadedly connected to the ferrule seat sleeve so that the limiting platform presses against the ferrule spring 7.

[0031] The design of the quick tracheal connector allows for quick connection or disconnection of pneumatic tools through simple operations, improving work efficiency. The hermetic sleeving of the ferrule seat 2 and the connecting pipe seat 1 and the hermetic insertion of the connecting trachea 5 ensure the tightness of compressed air during transmission, preventing gas leakage. The valve core 4 is pressed against the connecting pipe seat 1 by the valve core spring 6, realizing the control of air flow and ensuring a stable supply of air flow. The exhaust hole 41 on the valve core 4 can quickly release pressure when the connection is disconnected, improving the safety of operation. The central hole in the connecting trachea 5 communicates with the valve core 4, which helps the smooth flow of air and reduces air flow resistance.

[0032] The ferrule 3 is threadedly connected to the ferrule seat 2 and interacts with the ferrule spring 7 through the limiting platform, providing a stable fixing and quick release mechanism. The valve core spring 6 and the ferrule spring 7 provide auxiliary forces, making the operation of the valve core 4 and the ferrule 3 smoother and reducing the operation force. By moving the ferrule 3 left and right, the user can easily connect and disconnect the connecting trachea 5, and the operation is simple and intuitive.

[0033] Through the above technical solution, the provided trachea quick connector can quickly cut off the compressed air supply when disconnected, reducing the risks caused by improper operation. Based on the design of the valve core spring 6, the gas can be quickly and reliably blocked to reduce gas leakage. The structural design of the valve core 4 can reduce gas consumption, thereby achieving energy-saving effects. The matching accuracy of the valve core 4 and the rubber ring 81 enables the product to have a good blocking effect and a long service life. In addition, based on the structural design of the connecting seat 1 and the air connecting pipe 5, the pipeline can be quickly connected, thereby increasing its scope of application. At the same time, the trachea quick connector has a simple structure, is easy to maintain, and has good economy and practicality.

[0034] In an embodiment provided by the present disclosure, a plurality of limiting grooves 51 are provided on the air connection pipe 5 at intervals along the axial direction thereof, and the depth of the limiting grooves 51 gradually becomes shallower in the direction close to the valve core 4, so that a locking tooth 52 is formed on the pipe body of the air connection pipe 5. The locking tooth 52 structure is formed based on the change in the depth of the limiting grooves 51, which can provide an additional fixing effect when the air connection pipe 5 is inserted, and prevent the air connection pipe 5 from accidentally falling out during use. The presence of the locking tooth 52 increases the friction between the air connection pipe 5 and the hose, and improves the stability of the connection.

[0035] At the same time, because the locking teeth 52 are arranged at intervals along the axial direction, they can serve as a guiding structure to guide the air connection pipe 5 to be correctly inserted and position the locking pipe (such as a locking hose), so that the pipe can be gradually locked during the insertion process to ensure the tightness of the connection.

[0036] When the air pipe 5 needs to be removed, the resistance of the locking teeth 52 can be overcome by reversely rotating or pulling the air pipe 5 to achieve quick removal. The limit groove 51 and the locking teeth 52 structure on the air pipe 5 provide a simple and effective connection and fixing method for the air pipe quick connector, which helps to improve the stability of the connection and the convenience of operation.

[0037] In the present disclosure, a guide shaft 42 is provided at the end of the valve core 4, one end of the valve core spring 6 is sleeved on the guide shaft 42, and the other end is pressed against the connecting pipe seat 1; wherein the valve core spring 6 is configured as a disc spring.

[0038] The guide shaft 42 provides precise guidance for the valve core 4, ensuring that the valve core 4 maintains linear motion when moving, avoiding tilting or jamming. The sleeve and pressure of the valve core spring 6 (disc spring) provide the support force required by the valve core 4, keeping the valve core 4 stable in the air chamber. The elastic effect of the valve core spring 6 enables the valve core 4 to quickly reset after disconnection, thereby quickly blocking the compressed air.

[0039] The disc spring has high durability and can withstand multiple compressions and releases, thereby increasing the service life of the valve core 4. At the same time, it is also beneficial to reduce the friction of the valve core 4 during movement and reduce wear.

[0040] It should be noted that the configuration of the valve core spring 6 can be adjusted according to different working pressures and usage environments to improve the adaptability of the quick connector.

[0041] In some application scenarios, the valve core spring can also be configured as a constant-diameter helical spring.

[0042] In the present disclosure, the sealing connector includes a rubber ring 81 and a bushing 82. The bushing 82 is embedded in the rubber ring 81 and is disposed at the joint of the valve core 4 and the gas connection pipe 5. The combination of the rubber ring 81 and the bushing 82 provides double sealing to ensure that there is no gas leakage at the joint of the valve core 4 and the gas connection pipe 5. As a sealing element, the rubber ring 81 may fail due to aging or wear, while the use of the bushing 82 can provide additional protection and extend the service life of the rubber ring 81. At the same time, the bushing 82 can also serve as a support for the rubber ring 81 to reduce the friction between the contact surface of the rubber ring 81 and the valve core 4 or the gas connection pipe 5.

[0043] In an embodiment provided by the present disclosure, a positioning groove is sleeved on the valve core 4, and a ball 9 is embedded in the ferrule seat 2; when the gas connection pipe 5 is inserted into the air chamber, a part of the ball 9 is embedded in the positioning groove. The ball 9 being embedded in the positioning groove provides precise positioning for the gas connection pipe 5, ensuring that the gas connection pipe 5 is correctly inserted and fixed on the valve core 4. The cooperation of the ball 9 and the positioning groove improves the stability of the connection between the gas connection pipe 5 and the ferrule seat 2. At the same time, when the gas connection pipe 5 is correctly inserted, the ball 9 plays a self-locking role in the positioning groove to maintain the position of the gas connection pipe 5 in the air chamber.

[0044] The ball 9 slides in the positioning groove, reducing the wear of the gas connection pipe 5 in direct contact with the ferrule seat 2 and extending the service life of the gas connection pipe 5. When it is necessary to disassemble the gas connection pipe 5, the ferrule 3 can be rotated, so that the ball 9 is withdrawn from the positioning groove to achieve quick disassembly.

[0045] Specifically, a locking groove is provided on the ferrule seat 2, and a wire retaining ring 10 is sleeved in the locking groove. The wire retaining ring 10 provides additional fixing in the locking groove, which can prevent the ferrule seat 2 from loosening during use, reduce the connection instability caused by vibration or pressure changes, and ensure a more secure connection between the ferrule seat 2 and the valve core 4.

[0046] In an embodiment provided in the present disclosure, the pipe socket 1 includes a fixedly connected limiting section 11 and a plug-in section 12, wherein the outer diameter of the plug-in section 12 is smaller than the limiting section 11; the pipe socket 1 is conical, and its outer diameter gradually increases in the direction close to the valve core 4. The conical design helps the pipe socket 1 to play a guiding and locking role during the insertion process, ensuring that the valve core 4 is correctly aligned and tightly fitted. Based on the design of the inclined surface on the pipe socket 1, the sealing is gradually enhanced as the valve core 4 is inserted. The design of the limiting section 11 is convenient for clamping and can also play a limiting role for the external plug-in pipe.

[0047] In another embodiment provided in the present disclosure, the inner hole of the connecting pipe seat includes a conical section and a cylindrical section, wherein the conical section is formed as a conical threaded hole; the flame arrester gas plug is inserted into the cylindrical section and pressed against the valve core spring.

[0048] The tapered section is formed into a tapered threaded hole, so that it can cooperate with the plug-in (usually with matching threads) of the trachea quick connector to achieve a quick and stable connection. When the plug-in is inserted into the tapered threaded hole, the mutual engagement of the threads can ensure the tightness and airtightness of the connection.

[0049] The flame arrester gas plug is inserted into the cylindrical section and pressed against the valve core spring. Its function is to filter impurities and particles in the gas to ensure that the gas remains clean when passing through the gas pipe quick connector.

[0050] In the present disclosure, a first sealing ring 101 is sleeved on the pipe socket 1, and the ferrule socket 2 is pressed against the first sealing ring 101. The first sealing ring 101 can play a sealing role to ensure that the gas does not leak at the pipe socket 1. At the same time, it can also absorb the pressure generated by gas pressure changes or mechanical vibrations to reduce the impact on the joint. The ferrule socket 2 presses against the first sealing ring 101, which helps to protect the end of the pipe socket 1 and avoid damage due to direct force.

[0051] See also Figure 2 and Figure 4 As shown, in the present disclosure, a mounting groove is provided in the inner hole of the ferrule seat, and a second sealing ring is provided in the mounting groove. Specifically, the second sealing ring mainly functions to provide a seal between the valve core and the air chamber. When the valve core is inserted into the air chamber, it is in close contact with the second sealing ring, thereby preventing gas from leaking from the gap between the valve core and the air chamber.

[0052] It should be understood that the term "and / or" appearing in this article is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time.

[0053] In this disclosure, see Figure 3As shown, the air pipe quick connector also includes a flame-retardant gas plug, which is inserted into the inner hole of the connecting socket.

[0054] Specifically, the flame-retardant gas plug is a prior art product, and its main function is to prevent the spread of flames or to stop the flames from spreading in the pipeline, thereby protecting the safety of equipment and pipelines and controlling the spread of fire. When the combustible gas or vapor mixture in the pipeline leaks and encounters a fire source, the flame-retardant gas plug can effectively prevent the spread of flames, reduce the impact range of the fire, and protect the safety of surrounding facilities and personnel.

[0055] There are many types of fire arrester gas plugs, such as powder flame arresters, foam flame arresters and CO2 flame arresters, which can be selected and used according to different fire types and scenarios. When using fire arrester gas plugs, attention should be paid to factors such as material selection, mechanical strength and corrosion resistance to ensure that they can play an effective role.

[0056] In the present disclosure, a gas pipe quick connector provided with a flame-retardant gas plug is used in an application scenario of transmitting natural gas, which can control the flow rate of natural gas and ensure safe use.

[0057] In one embodiment, the main structure (the connecting pipe seat, the ferrule seat and the ferrule) and the valve core can be made of stainless steel.

[0058] In another embodiment, the main structure (the connecting pipe seat, the ferrule seat and the ferrule) is made of stainless steel, and the valve core is made of copper.

[0059] In another embodiment, the main structure (the connecting pipe seat, the ferrule seat and the ferrule) and the valve core are both made of copper, and the surfaces of the main structure and the valve core are chrome-plated to form a chromium layer.

[0060] Finally, it should be noted that the utility model is not limited to the above optional implementations, and anyone can derive other various forms of products under the inspiration of the utility model. The above specific implementations should not be understood as limiting the scope of protection of the utility model. The scope of protection of the utility model shall be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. A trachea quick connector, characterized in that: It comprises a coaxially arranged connecting pipe seat, a ferrule seat, a ferrule, a valve core and an air connection pipe, one end of the ferrule seat is sealingly sleeved on the outer periphery of the connecting pipe seat, and the other end is sealingly inserted in the ferrule, and the inner holes of the connecting pipe seat and the ferrule seat jointly form an air chamber adapted to the valve core; the valve core is sealingly inserted in the air chamber, and one end of the valve core presses against the connecting pipe seat through a valve core spring; the air connection pipe is sealingly inserted in the air chamber, and the air connection pipe is coaxially connected to the valve core through a sealing connector; the valve core is provided with an exhaust hole, and a central hole connected to the valve core is formed in the air connection pipe; The ferrule seat is provided with an annular groove for sleeve-mounting the ferrule spring, and the inner wall of the ferrule is provided with a limit platform; wherein the ferrule is threadedly connected to the ferrule seat so that the limit platform can be pressed against the ferrule spring.

2. The trachea quick connector according to claim 1, characterized in that: The air connection pipe is provided with a plurality of limit grooves spaced apart along the axial direction thereof, and the depth of the limit grooves gradually becomes shallower in the direction close to the valve core, so that locking teeth are formed on the pipe body of the air connection pipe.

3. The trachea quick connector according to claim 1, characterized in that: A guide shaft is provided at the end of the valve core, one end of the valve core spring is sleeved on the guide shaft, and the other end is pressed against the connecting pipe seat; wherein the valve core spring is configured as a disc spring.

4. The trachea quick connector according to claim 1, characterized in that: The sealing connection part comprises a rubber ring and a bushing, so the bushing is embedded in the rubber ring, and the bushing is arranged at the joint of the valve core and the air connection pipe.

5. The trachea quick connector according to claim 1, characterized in that: A positioning groove is sleeved on the valve core, and a ball is embedded in the ferrule seat; when the air connecting pipe is inserted into the air chamber, the ball is partially embedded in the positioning groove.

6. The trachea quick connector according to claim 5, characterized in that: The ferrule seat is provided with a locking groove, and a wire retaining ring is sleeved in the locking groove.

7. The trachea quick connector according to claim 1, characterized in that: The connecting pipe seat comprises a fixedly connected limiting section and an inserting section, wherein the outer diameter of the inserting section is smaller than that of the limiting section; the connecting pipe seat is conical, and its outer diameter gradually increases in a direction approaching the valve core.

8. The trachea quick connector according to claim 1, characterized in that: The air pipe quick connector also includes a fire-stop gas plug, which is inserted into the inner hole of the connecting pipe seat.

9. The trachea quick connector according to claim 1, characterized in that: The inner hole of the connecting pipe seat includes a conical section and a cylindrical section, wherein the conical section is formed as a conical threaded hole; the flame arrester gas plug is inserted into the cylindrical section and pressed against the valve core spring.

10. The trachea quick connector according to claim 1, characterized in that: A first sealing ring is sleeved on the connecting pipe seat, and the ferrule seat is pressed against the first sealing ring; And / or, a mounting groove is provided in the inner hole of the ferrule seat, and a second sealing ring is provided in the mounting groove.

Images