Air pipe joint and air plugging joint

Abstract

The utility model relates to the technical field of air pipe joints, and provides an air pipe joint and an air plugging joint, which comprise a mounting piece, the mounting piece is used for sleeving one end of an air pipe, one end of the mounting piece is provided with a mounting part, a sleeve is slidably arranged on the mounting piece, the sleeve is provided with a containing cavity, and after the sleeve slides, the mounting piece enters or leaves the containing cavity. By means of the technical scheme, the problems that in the prior art, when connectors are arranged, different connectors are adopted according to different use scenes, additional connecting pieces are needed sometimes, various connecting structures need to be prepared for installation operation during connection, and the connecting efficiency is low are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of air pipe connectors, and specifically, to an air pipe connector and a gas blocking connector. Background Art

[0002] Air pipe connectors and gas blocking connectors are indispensable components in a pneumatic system, which are used to connect air pipes or seal the ends of air pipes to ensure gas transmission and control. The air pipe connector is connected to an air pipe or other components of the system by means of threads, buckles, quick plugs, etc. When designing, it is necessary to ensure the firmness of the connection and easy assembly. In the case of relatively low air pressure flow, the buckle and quick plug types are a mainstream direction. However, when setting up connectors, different connectors are adopted according to different usage scenarios, such as connectors between pipes and between pipes and sockets, and sometimes additional connecting pieces are required. When connecting, multiple connecting devices need to be prepared for installation operations, resulting in low connection efficiency. Summary of the Utility Model

[0003] The utility model provides an air pipe connector and a gas blocking connector, which solve the problem in the related art that different connectors are adopted according to different usage scenarios when setting up connectors, and sometimes additional connecting pieces are required. When connecting, multiple connecting structures need to be prepared for installation operations, resulting in low connection efficiency.

[0004] The technical solution of the utility model is as follows:

[0005] An air pipe connector for connecting an air pipe, comprising:

[0006] A mounting member for sleeving one end of the air pipe, and one end of the mounting member has a mounting portion.

[0007] A sleeve slidably disposed on the mounting member, the sleeve having a receiving cavity. After the sleeve slides, the mounting member enters or exits the receiving cavity.

[0008] As a further technical solution, the mounting member is cylindrical, and the sliding direction of the sleeve is parallel to the axial direction of the mounting member.

[0009] A gas blocking connector, comprising:

[0010] A clamping member located in the receiving cavity, the clamping member slidably disposed on the sleeve, the inner wall of the clamping member having a clamping portion, and after the clamping portion slides, it is used to clamp the mounting portion. There are two clamping portions, and the two clamping portions are symmetrically disposed at both ends of the clamping member for clamping the mounting portions on two different mounting members.

[0011] As a further technical solution, the card member is a hollow semi-cylindrical shape, and the card members are arranged in pairs. After sliding on the sleeve, the two card members approach or move away from each other.

[0012] As a further technical solution, one side of the card member has a sliding portion, and the sleeve has a guiding groove parallel to the radial direction of the air pipe. The sliding portion is slidably arranged in the guiding groove. It further includes:

[0013] A first elastic member, one end of the first elastic member is arranged on the inner wall of the guiding groove, and the other end is arranged on the sliding portion, providing a force for the sliding portion to slide away from the inner wall of the guiding groove.

[0014] As a further technical solution, the sleeve has a notch portion, and the sliding portion has an arc-shaped top. It further includes:

[0015] A top member, the top member is arranged on the mounting member, and the top member has an arc-shaped top. After the sleeve slides, the arc-shaped top passes through the notch portion and abuts against the arc-shaped top of the sliding portion, driving the sliding portion to slide.

[0016] As a further technical solution, it further includes:

[0017] A pressing member, the pressing member is arranged on the sleeve and is located at one end away from the mounting portion.

[0018] As a further technical solution, the pressing member is disc-shaped, the pressing member has a radial sliding groove, and the outer wall of the mounting member further has a positioning portion. It further includes:

[0019] A positioning member, the positioning member is slidably arranged in the sliding groove. After the pressing member slides, the positioning member abuts against the positioning portion, and the positioning portion drives the positioning member to slide.

[0020] A second elastic member, one end of the second elastic member is arranged on the bottom wall of the sliding groove, and the other end is arranged on the positioning member, providing a force for the positioning member to slide in a direction away from the bottom wall of the sliding groove.

[0021] As a further technical solution, the sliding groove, the positioning member and the positioning portion are all in several numbers and are arranged in a circumferential arrangement.

[0022] As a further technical solution, each group of the positioning portions is two, and the connection line of the two positioning portions in each group is parallel to the axial direction of the mounting member.

[0023] The working principle and beneficial effects of the present utility model are as follows:

[0024] In the present utility model, the mounting member is designed as a cylinder, with a mounting portion provided at one end. The mounting portion is an annular flange with an outer diameter slightly larger than the inner diameter of the air pipe, and is used to tightly embed the end of the air pipe. The mounting member serves as the working body of the air pipe joint, providing the air intake effect at the air intake end of a single air pipe and a good air outlet effect at the air outlet end, forming a preliminary mechanical connection. The other end of the mounting member is provided with an external thread or a connection bayonet for connecting to a fixed component in the pneumatic system. The sleeve in this solution is slidably arranged on the mounting member. On the one hand, the sleeve can be designed to be connected to the two ends of the mounting member by means of insertion or clamping. On the other hand, through the hollow cylindrical structure of the sleeve, other further clamping structures can be arranged inside, and the inner wall can be provided with an inner connection structure matching the mounting member. This design can, on the one hand, enable the air pipe joint to switch between the state of the mounted member being connected and the state of the actively sleeved sleeve by sliding the sleeve, replacing some additional connecting parts in some cases, making the installation and connection link of the air pipe more integrated and efficient. It also provides a structural basis for more complex connection situations. Description of the Drawings

[0025] The above characteristics, technical features, advantages and their implementation manners of the present utility model will be further described below in a clear and understandable manner in combination with the drawings of the preferred embodiments.

[0026] Figure 1 It is a schematic structural diagram of the present utility model;

[0027] Figure 2 It is a schematic internal structural diagram of the present utility model;

[0028] Figure 3 It is a schematic partial internal structural diagram at the guiding groove of the present utility model.

[0029] In the figure: mounting member - 1, mounting portion - 101, clamping portion - 102, sleeve - 2, accommodating cavity - 201, guiding groove - 202, notch portion - 203, clamping member - 3, clamping part - 301, sliding part - 302, arc-shaped top - 303, first elastic member - 4, top member - 5, arc-shaped top - 501, pressing member - 6, sliding groove - 601, clamping member - 7, second elastic member - 8. Detailed Embodiment

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the specific embodiments of the present utility model will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings and other embodiments can be obtained.

[0031] To make the drawings concise, only the parts related to the utility model are schematically shown in each drawing, and they do not represent the actual structure of the product as a whole. Additionally, to make the drawings concise and easy to understand, for components with the same structure or function in some drawings, only one of them is schematically shown, or only one of them is labeled. In this text, "one" not only means "only this one", but also can mean "more than one" situation, and "several" includes "two" and "more than two".

[0032] In this text, it should be noted that unless otherwise clearly specified and limited, the terms "install", "connect", and "join" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific situations.

[0033] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0034] Refer to Figures 1 to 3 , an embodiment of the present utility model provides an air pipe joint for connecting an air pipe, which includes a mounting member 1. The mounting member 1 is used to sleeve one end of the air pipe. One end of the mounting member 1 has a mounting portion 101. A sleeve 2 is slidably arranged on the mounting member 1. The sleeve 2 has a receiving cavity 201. After the sleeve 2 slides, the mounting member 1 enters or exits the receiving cavity 201.

[0035] In this embodiment, the mounting member 1 is designed as a cylinder, and a mounting portion 101 is provided at one end. The mounting portion 101 is an annular flange with an outer diameter slightly larger than the inner diameter of the air pipe, which is used to tightly embed the end of the air pipe. The mounting member 1, as the working main body of the air pipe joint, provides the air intake effect at the air intake end of a single air pipe and a good air outlet effect at the air outlet end, forming a preliminary mechanical connection. The other end of the mounting member 1 is provided with an external thread or a connection bayonet for connecting with a fixed component in a pneumatic system. In this solution, the sleeve 2 is slidably arranged on the mounting member 1. On the one hand, the sleeve 2 can be set to a structure that can connect the two ends of the mounting member 1 by means of stuffing or clamping. On the other hand, through the hollow cylindrical structure of the sleeve 2, other further clamping structures can be arranged inside, and the inner wall can be provided with an inner connection structure matching the mounting member 1. This design can, on the one hand, enable the air pipe joint to switch between the state of the mounting member 1 to be connected and the state of the actively sleeved sleeve 2 by sliding the sleeve 2, replacing some additional connecting parts in some cases, making the installation and connection link of the air pipe more integrated and efficient. It also provides a structural basis for more complex connection situations.

[0036] Furthermore, the mounting member 1 is cylindrical, and the sliding direction of the sleeve 2 is parallel to the axial direction of the mounting member 1.

[0037] In this embodiment, the cylindrical shape of the mounting member 1 and the axial sliding of the sleeve 2 simplify the operation steps, eliminating the need for rotational alignment, improving the connection speed and convenience. It ensures the airtightness at the connection, effectively avoiding gas leakage. It can be used for both the connection of air pipes and the closing of air pipes, with a wide range of applications, a simple structure, easy disassembly and inspection, reducing the maintenance difficulty and cost.

[0038] This embodiment provides a gas-blocking joint, which includes a clamping member 3 located in the accommodating cavity 201. The clamping member 3 is slidably arranged on the sleeve 2. The inner wall of the clamping member 3 has a clamping portion 301. After the clamping portion 301 slides, it is used to clamp the mounting portion 101. There are two clamping portions 301, and the two clamping portions 301 are symmetrically arranged at both ends of the clamping member 3 for clamping the mounting portions 101 on two different mounting members 1.

[0039] In this embodiment, in a pneumatic system, especially in occasions where multiple air pipes need to be quickly closed, traditional gas-blocking joints often require separate operations for each air pipe, resulting in low efficiency. This embodiment introduces a double-position gas-blocking joint that can close two air pipes at the same time, greatly improving the operation efficiency and convenience. The clamping member 3 is located in the accommodating cavity 201 of the sleeve 2. The clamping member 3 is slidably arranged on the sleeve 2. The inner wall of the clamping member 3 has two symmetrically arranged clamping portions 301. The clamping portions 301 are designed as claw-like structures with a certain elasticity for clamping the mounting portion 101 on the mounting member 1 to ensure the closing of the air pipe. When the clamping member 3 slides along the axial direction of the sleeve 2, the clamping portions 301 can accurately align with and clamp the mounting portion 101 on the mounting member 1. When closing two air pipes, the operator first inserts the two mounting members 1 into the ends of the two air pipes respectively, ensuring that the mounting members 1 are closely attached to the air pipes. Subsequently, slide the sleeve 2 with the clamping member 3 axially onto the two mounting members 1, and the two clamping portions 301 in the clamping member 3 are aligned with the mounting portions 101 on the two mounting members 1. Continue to slide the sleeve 2, and the clamping portions 301 in the clamping member 3 expand outward under the elastic action. When the clamping portions 301 are aligned with the mounting portions 101, the clamping portions 301 automatically contract to clamp the mounting portions 101, realizing the simultaneous closing of the two air pipes. This design can, on the one hand, close two air pipes at the same time, significantly improving the operation efficiency. On the other hand, it can be applicable to various air pipe sizes, and only by adjusting the size of the clamping portions 301 can it match air pipes with different diameters. The snap-in connection between the clamping member 3 and the mounting member 1 also ensures the stability of the closing, effectively preventing gas leakage. When this joint is not needed for connecting another joint, or for connecting to a joint seat, it can be achieved only by sliding the sleeve 2 to drive the clamping member 3 and making the mounting member 1 leave the accommodating cavity 201.

[0040] Furthermore, the card member 3 is a hollow semi-cylindrical shape, and the card members 3 are arranged in pairs. After sliding on the sleeve 2, the two card members 3 move closer to or away from each other.

[0041] In this embodiment, when connecting or closing the trachea, the operator first inserts the mounting member 1 into the end of the trachea to ensure a tight fit. Subsequently, through an external operating mechanism or adaptive control, the two card members 3 slide axially relative to each other along the sleeve 2. When the two card members 3 move closer to each other, the clamping portions 301 on their inner walls form a clamping force on the mounting portions 101 on the mounting member 1, achieving the connection or closing of the trachea. When disassembly is required, reverse the operation to move the two card members 3 away from each other, and the clamping portion 301 releases the mounting portion 101, allowing for easy disassembly of the trachea. The connection and disassembly of the trachea are achieved through the relative movement of the two card members 3, with flexible operation and suitability for occasions with limited space. The design of the card member 3 allows for adjustment of the clamping force of the clamping portion 301, making it suitable for tracheas of different diameters and improving the applicable range of the joint.

[0042] Furthermore, one side of the card member 3 has a sliding portion 302. The sleeve 2 has a guiding groove 202 parallel to the radial direction of the trachea. The sliding portion 302 is slidably arranged in the guiding groove 202. Further included is a first elastic member 4 with one end disposed on the inner wall of the guiding groove 202 and the other end disposed on the sliding portion 302, providing a force for the sliding portion 302 to slide away from the inner wall of the guiding groove 202.

[0043] In this embodiment, in a pneumatic system, the connection stability and operation convenience of the trachea joint and the air-blocking joint are key considerations. This embodiment proposes a trachea joint and an air-blocking joint using an elastic self-locking mechanism, aiming to provide a solution that requires no additional tools, is easy to operate, and has stable connection, especially suitable for occasions with frequent operations and rapid response requirements. The card member 3 is a hollow semi-cylindrical shape and is arranged in pairs. One side of each card member 3 has a sliding portion 302, which cooperates with the guiding groove 202 in the sleeve 2 and can slide in the guiding groove 202. The first elastic member 4 is a spring or similar elastic material, with one end fixed on the inner wall of the guiding groove 202 and the other end connected to the sliding portion 302 of the card member 3, providing a force for the sliding portion 302 to slide away from the inner wall of the guiding groove 202. When the card member 3 is subjected to an external force and slides towards the inner wall of the guiding groove 202, the first elastic member 4 is compressed. When the external force disappears, the restoring force of the elastic member will push the card member 3 back to its original position, achieving the self-locking function. The automatic locking is achieved by using the restoring force of the first elastic member 4, without the need for additional tools and with easy operation. The rapid sliding and self-locking mechanism of the card member 3 improve the speed of connection and disassembly and are suitable for occasions with frequent operations. The cooperation of the guiding groove 202 and the sliding portion 302, as well as the design of the elastic member, make the entire joint structure compact and save space.

[0044] Further, the sleeve 2 has a notch portion 203, the sliding portion 302 has an arc-shaped topped portion 303, and further includes a top member 5 disposed on the mounting member 1, and the top member 5 has an arc-shaped top portion 501. After the sleeve 2 slides, the arc-shaped top portion 501 passes through the notch portion 203 and abuts against the arc-shaped topped portion 303, driving the sliding portion 302 to slide.

[0045] In this embodiment, in the pneumatic system, the operation convenience and connection stability of the air pipe joint and the air-blocking joint are key considerations. This embodiment proposes a linkage design. Through the ingenious linkage among the sleeve 2, the top member 5 and the clamping member 3, the rapid connection and disassembly of the air pipe are realized, while ensuring the connection stability and sealing performance, which is applicable to occasions that require frequent operation and rapid response. The sliding portion 302 has an arc-shaped topped portion 303 for linkage with the top member 5. The top member 5 is disposed on the mounting member 1 and has an arc-shaped top portion 501. When the sleeve 2 slides axially along the mounting member 1, the arc-shaped top portion 501 of the top member 5 passes through the notch portion 203 of the sleeve 2 and abuts against the arc-shaped topped portion 303 of the clamping member 3, driving the sliding portion 302 of the clamping member 3 to slide. Since the inner wall of the clamping member 3 is not smooth but has an uneven structure and is in a tight fit with the mounting member 1, the cooperation between the arc-shaped topped portion 303 and the arc-shaped top portion 501 enables the two clamping members 3 to open and then re-engage, maintaining sliding during the process. When the sleeve 2 slides axially along the mounting member 1, the arc-shaped top portion 501 of the top member 5 passes through the notch portion 203 of the sleeve 2 and contacts the arc-shaped topped portion 303 of the clamping member 3, pushing the sliding portion 302 of the clamping member 3 to slide in the guiding groove 202. When the clamping portion 301 on the inner wall of the clamping member 3 aligns with the mounting portion 101 on the mounting member 1, the sliding portion 302 of the clamping member 3 stops sliding, and the clamping portion 301 of the clamping member 3 automatically snaps into the mounting portion 101 on the mounting member 1 to achieve the connection or sealing of the air pipe. When disassembly is required, slide the sleeve 2 in the reverse direction to release the linkage between the top member 5 and the clamping member 3, allow the sliding portion 302 of the clamping member 3 to slide in the reverse direction, release the connection between the clamping portion 301 and the mounting portion 101, and allow the easy disassembly of the air pipe. Through the linkage mechanism, the operator only needs to simply slide the sleeve 2 to complete the connection and disassembly without additional tools, improving the operation convenience.

[0046] Further, it further includes a pressing member 6 disposed on the sleeve 2 and located at an end far from the mounting portion 101.

[0047] In this embodiment, in the pneumatic system, the simplicity of the connection and disconnection operations between the air pipe joint and the air-blocking joint is the key to improving work efficiency. This embodiment introduces a push-button unlocking design. By providing a push-button member 6 on the sleeve 2, the quick unlocking of the air pipe joint and the air-blocking joint is achieved, thereby simplifying the disassembly process and improving the convenience of operation. The push-button member 6 is designed on the outer surface of the sleeve 2. By pressing the push-button member 6, the sleeve 2 can be more conveniently manipulated to slide, enabling the clamping member 3 or the locking mechanism to lock or release the mounting member 1, thus allowing the easy disassembly of the air pipe.

[0048] Furthermore, the push-button member 6 is disk-shaped. The push-button member 6 has a radial chute 601. The outer wall of the mounting member 1 further has a clamping position portion 102. There is also a clamping member 7 slidably disposed in the chute 601. After the push-button member 6 slides, the clamping member 7 abuts against the clamping position portion 102, and the clamping position portion 102 drives the clamping member 7 to slide. One end of the second elastic member 8 is disposed on the bottom wall of the chute 601, and the other end is disposed on the clamping member 7, providing a force for the clamping member 7 to slide away from the bottom wall of the chute 601.

[0049] In this embodiment, an elastic clamping-position unlocking design is introduced. By providing a clamping member 7 and a second elastic member 8 between the push-button member 6 and the mounting member 1, the quick unlocking and automatic locking of the air pipe joint and the air-blocking joint are achieved, thereby simplifying the disassembly and connection processes and improving the convenience of operation and the stability of connection. The outer wall of the mounting member 1 further has a clamping position portion 102 for cooperating with the clamping member 7. The push-button member 6 has a radial chute 601 for the sliding of the clamping member 7. The second elastic member 8 is a spring or a similar elastic material. One end is fixed on the bottom wall of the chute 601, and the other end is connected to the clamping member 7, providing a force for the clamping member 7 to slide away from the bottom wall of the chute 601. When the clamping member 7 is subjected to an external force and slides towards the bottom wall of the chute 601, the second elastic member 8 is compressed; when the external force disappears, the restoring force of the elastic member will push the clamping member 7 back to its original position to achieve the automatic locking function. The cooperation between the clamping member 7 and the clamping position portion 102 enables the device to slide the mounting member 1 into the receiving cavity 201 without external force and then not retract, making the clamping process more stable and controllable and preventing the operation difficulties caused by uncontrolled sliding.

[0050] Furthermore, the number of the chutes 601, the clamping members 7 and the clamping position portions 102 are all several, and they are all arranged in a circumferential arrangement.

[0051] In this embodiment, through the cooperation of multiple clamping members 7 and the second elastic member 8, multi-point synchronous unlocking and automatic locking are achieved, improving the stability of the connection and the convenience of operation. The cooperation between the multi-point circumferentially arranged clamping members 7 and the clamping portion 102 ensures the all-round stability of the connection, effectively avoiding the problem of unstable connection caused by uneven force on a single point. The multi-point synchronous unlocking design significantly reduces the time required for disassembly and connection, improving work efficiency.

[0052] Further, each group of clamping portions 102 is two, and the connection line of the two clamping portions 102 in each group is parallel to the axial direction of the mounting member 1.

[0053] In this embodiment, the clamping portion 102 is set to be two. One is to keep the sleeve 2 in the state where it is stuck in the receiving cavity 201 of the mounting member 1, that is, to keep the joint in the state of being clamped with the positions of other mounting members 1, which can achieve stable and convenient clamping. When the mounting member 1 is in the state of being clamped, it can achieve the clamping after the sleeve 2 is retracted, preventing the connection from being affected when it slides beside the mounting member 1.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A tracheal connector, characterized in that, For connecting an air pipe, including: A mounting member (1), the mounting member (1) is used to sleeved on one end of the air pipe, and one end of the mounting member (1) has a mounting portion (101). A sleeve (2), the sleeve (2) is slidably arranged on the mounting member (1), the sleeve (2) has a receiving cavity (201), after the sleeve (2) slides, the mounting member (1) enters or leaves the receiving cavity (201).

2. The tracheal connector according to claim 1, wherein The mounting member (1) is cylindrical, and the sliding direction of the sleeve (2) is parallel to the axial direction of the mounting member (1).

3. Plugging air joint, characterized in that, The air pipe joint according to any one of claims 1 to 2 further includes: A clamping member (3), the clamping member (3) is located in the receiving cavity (201), the clamping member (3) is slidably arranged on the sleeve (2), the inner wall of the clamping member (3) has a clamping portion (301), after the clamping portion (301) slides, it is used to clamp the mounting portion (101), the clamping portion (301) is two, and the two clamping portions (301) are symmetrically arranged at both ends of the clamping member (3) for clamping the mounting portions (101) on two different mounting members (1).

4. The air-blocking joint according to claim 3, characterized in that, The clamping member (3) is a hollow semi-cylindrical shape, and the clamping members (3) are arranged in pairs, and after sliding on the sleeve (2), the two clamping members (3) approach or move away from each other.

5. The air-blocking joint according to claim 3, characterized in that, One side of the clamping member (3) has a sliding portion (302), and the sleeve (2) has a guiding groove (202) parallel to the radial direction of the air pipe, the sliding portion (302) is slidably arranged in the guiding groove (202), and further includes: A first elastic member (4), one end of the first elastic member (4) is arranged on the inner wall of the guiding groove (202), and the other end is arranged on the sliding portion (302), providing a force for the sliding portion (302) to slide away from the inner wall of the guiding groove (202).

6. The air-blocking joint according to claim 5, characterized in that, The sleeve (2) has a notch portion (203), and the sliding portion (302) has an arc-shaped top (303), and further includes: A top member (5), the top member (5) is arranged on the mounting member (1), and the top member (5) has an arc-shaped top (501), after the sleeve (2) slides, the arc-shaped top (501) passes through the notch portion (203) and abuts against the arc-shaped top (303), driving the sliding portion (302) to slide.

7. The air-blocking joint according to claim 3, characterized in that, Further includes: A pressing member (6), the pressing member (6) is arranged on the sleeve (2) and is located at one end far from the mounting portion (101).

8. The gas-blocking joint according to claim 7, characterized in that, The pressing member (6) is disc-shaped, the pressing member (6) has a radial chute (601), and the outer wall of the mounting member (1) also has a positioning portion (102), and further includes: A positioning member (7), the positioning member (7) is slidably arranged in the chute (601), after the pressing member (6) slides, the positioning member (7) abuts against the positioning portion (102), and the positioning portion (102) drives the positioning member (7) to slide. A second elastic member (8), one end of the second elastic member (8) is disposed on the bottom wall of the chute (601), and the other end is disposed on the clamping member (7), providing a force for the clamping member (7) to slide in a direction away from the bottom wall of the chute (601).

9. The air-blocking joint according to claim 8, wherein, The number of the chutes (601), the clamping members (7) and the clamping portions (102) are all several, and they are all arranged in a circumferential arrangement.

10. The air-blocking joint according to claim 8, characterized in that, Each group of the clamping portions (102) is two, and the connection line of the two clamping portions (102) in each group is parallel to the axial direction of the mounting member (1).

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