Novel vent pipe joint

Abstract

The utility model discloses a novel vent pipe joint. The novel vent pipe joint comprises a first connector and a second connector which are connected with different pipelines, the first connector and the second connector are provided with contacts, and the contacts are made of conductive materials. The first connector and / or the second connector are / is provided with a power supply device connected with the contact, the contact achieves conductive heating by introducing current and utilizing the resistance heat effect, the vent pipe connector is not prone to being damaged in the low-temperature state through proper heating, and a sealing material on the vent pipe connector is not prone to hardening or losing elasticity. Further, the joint can still keep good sealing and connecting performance under the extreme temperature condition, so that the sealing effect is improved, and the situation of gas leakage is not prone to occurring; and meanwhile, the possibility of freezing of the first connector and the second connector can be reduced through heating, so that gas circulation is more stable.

Description

Technical Field

[0001] The utility model relates to the field of design and manufacture of trachea connecting devices, and more specifically, to a novel ventilating pipe joint. Background Art

[0002] In industrial production and daily life, vent pipe joints are widely used in various transportation systems to connect different pipelines to achieve gas circulation; these vent pipe joints need to have efficient, stable and reliable connection performance to ensure smooth fluid transportation. At the same time, with the advancement of technology and the enhancement of environmental awareness, the requirements for vent pipe joints are also increasing, especially in their structural design and functional realization.

[0003] Traditional vent pipe joints usually only focus on basic connection functions and ignore the additional functions that may be needed in special environments. In low-temperature environments, condensed water may appear inside or outside the vent pipe joints, and then freeze, which can cause blockage of the vent pipe joints and affect the normal circulation of gas. The vent pipe joints may also become brittle and hard in low-temperature environments, and are prone to cracking or breaking, causing damage to the vent pipe joints. The sealing materials of the vent pipe joints are also prone to hardening or losing elasticity under low-temperature conditions, thereby reducing the sealing performance and possibly causing gas leakage. Utility Model Content

[0004] The utility model overcomes the shortcomings of the prior art and provides a novel ventilation pipe joint which can be used in a low-temperature environment, can allow gas to circulate normally, is not easily damaged, has a stable sealing effect, and is not prone to gas leakage.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0006] A novel ventilation pipe joint comprises a first connector and a second connector for connecting to different pipelines; the first connector and the second connector are detachably matched; contacts are arranged on the first connector and the second connector, and the contacts are made of conductive material; a power supply device connected to the contacts is arranged on the first connector and / or the second connector, and the contacts are heated by introducing current and utilizing the resistance thermal effect.

[0007] Furthermore, the contact is made of magnetic material.

[0008] Furthermore, the first connector includes a first assembly portion and a first connecting pipe disposed on the first assembly portion and connected to the pipeline;

[0009] The second connector includes a second assembly portion and a second connecting pipe disposed on the second assembly portion and connected to the pipeline;

[0010] The first assembly part and the second assembly part are detachably matched; the first connecting tube and the second connecting tube include assembly ends that match each other and connecting ends that match the pipeline; after the first connecting head and the second connecting head are assembled through the first assembly part and the second assembly part, the assembly ends of the first connecting tube and the second connecting tube match each other and make the first connecting tube and the second connecting tube communicate with each other.

[0011] Furthermore, the first assembly part includes a first assembly space, and a first assembly opening is provided to connect the first assembly space with the outside; the assembly end of the first connecting tube is in the first assembly space; the second assembly part includes an assembly block matching the first assembly space, and a second assembly space matching the assembly end of the first connecting tube is provided in the assembly block, the second assembly space is connected with the inside of the second connecting tube, and a second assembly opening is provided to connect the second assembly space with the outside; when the first assembly part and the second assembly part are assembled, the assembly block enters the first assembly space through the first assembly opening, and the assembly end of the first connecting tube enters the second assembly space through the second assembly opening.

[0012] Furthermore, a movable limiting member is provided on the first assembly portion, and a limiting portion cooperating with the limiting member is provided on the corresponding second assembly portion; the limiting portion limits the movement of the limiting member after cooperating with the limiting member.

[0013] Furthermore, a first matching portion is arranged along its circumference on the outer side of the first assembly portion, and a second matching portion is arranged along its circumference on the outer side of the second assembly portion. When the first assembly portion and the second assembly portion are assembled, the first matching portion abuts against the second matching portion, and the contact surfaces of the first matching portion and the second matching portion are planes; the contact is arranged on the first matching portion abutting against the second matching portion.

[0014] Further, the limiting member includes a limiting rod and a limiting spring, the limiting rod includes a pressing end and a limiting end, and the two ends of the limiting spring are respectively connected to the pressing end and the first assembly portion; a through space is provided in the first matching portion to penetrate the upper and lower surfaces thereof, and the limiting end passes through the through space; the limiting portion includes a limiting space provided in the second matching portion, and a limiting opening is provided on the second matching portion, and when the first matching portion abuts against the second matching portion, the limiting end enters the limiting space through the limiting opening;

[0015] The limiting space includes an active area and a limiting area. The limiting area is arranged on the outer side of the active area, and the limiting opening is arranged corresponding to the active area. The positional relationship between the active area and the limiting area is consistent with the direction of extension and compression of the limiting spring. A limiting block extending outward is arranged on the limiting end, and when the limiting spring is extended, the limiting block is pushed from the active area into the limiting area.

[0016] Furthermore, the inner diameter of the movable area corresponding to the movable path direction of the limiting rod is greater than or equal to the length of the limiting block set at the limiting end.

[0017] Furthermore, the number of the limiting spaces is at least two, and the limiting spaces are evenly distributed on the second matching portion; the position and number of the limiting members correspond to the setting of the limiting spaces.

[0018] Furthermore, it also includes a shell, which surrounds the first assembly part and the second assembly part; the connecting ends and pressing ends of the first connecting tube and the second connecting tube are exposed from the shell. Beneficial Effects

[0019] In the present invention, the first connector and the second connector are detachably matched, so that the present invention has high flexibility when used, and an operator can easily and conveniently assemble or disassemble the first connector and the second connector.

[0020] In the utility model, conductive heating is achieved through conductive contacts and a power supply device; proper heating makes the vent pipe joint itself less likely to be damaged under low temperature conditions, and also makes the sealing material on the vent pipe joint less likely to harden or lose elasticity, so that the joint can still maintain good sealing and connection performance under extreme temperature conditions, so as to improve the stability of the sealing effect and prevent gas leakage; at the same time, heating can also be used to reduce the possibility of freezing of the first connector and the second connector, so that the gas circulation is more stable.

[0021] In the utility model, the contacts are made of magnetic material, so that when the first connector and the second connector are close to each other, the magnetic interaction between the contacts will help them fit more closely together, which can not only reduce errors and misalignments in the connection process, but also improve the stability of the vent pipe joint during operation, and try to prevent accidental disconnection due to vibration or external force; magnetic materials usually have good electrical conductivity, and current can flow more smoothly between the contacts. When current is introduced, the contacts can more effectively convert electrical energy into thermal energy, thereby achieving rapid and uniform heating; magnetic materials usually also have good thermal conductivity. When the contacts generate heat through the resistive thermal effect, the heat can be transferred to other parts of the vent pipe joint more quickly, thereby achieving more uniform and efficient heating.

[0022] In the utility model, the matching of the first assembly space and the assembly block, as well as the matching of the second assembly space and the assembly end of the first connecting pipe, ensure the structural stability after assembly; the assembly block can be firmly fixed in the first assembly space, and the assembly end of the first connecting pipe can also fit tightly in the second assembly space, thereby ensuring the overall stability and sealing of the ventilation pipe joint to the greatest extent; at the same time, it makes the assembly process simpler and more intuitive, does not require complicated tools or skills, and reduces the difficulty of assembly.

[0023] In the utility model, the relative movement between the first assembly part and the second assembly part can be effectively limited through the setting and interaction of the limit member and the limit portion, and the accidental detachment of the vent pipe joint due to vibration, external force or other factors during use can be prevented as much as possible, thereby improving the stability and reliability of the vent pipe joint.

[0024] In the utility model, the first matching part and the second matching part abut against each other when the first assembly part and the second assembly part are assembled, making the assembly process simpler and more intuitive, and convenient for personnel to operate; the contact surfaces of the first matching part and the second matching part are flat, making the first assembly part and the second assembly part more stable and tighter during assembly.

[0025] In the utility model, the setting of the limit rod allows the user to operate the limit member by pressing its pressing end, so that the user can easily control the state of the limit member, thereby conveniently assembling or disassembling the utility model; through the cooperation of the limit rod and the limit spring, the utility model is easy to disassemble and the assembly strength and assembly stability of the utility model after assembly are improved.

[0026] In the utility model, the inner diameter of the movable area corresponding to the movable path direction of the limit rod is greater than or equal to the length of the limit block set at the limit end, which facilitates the disassembly and assembly of the utility model. Under the premise of not affecting the existing functions, the limit end of the limit rod can enter and exit the limit space.

[0027] In the present invention, the limiting spaces are evenly distributed on the second matching portion, and the positions and numbers of the limiting members correspond to the setting of the limiting spaces, so that the present invention is more stable as a whole after assembly.

[0028] In the utility model, the first connector and the second connector are protected by the provision of the outer shell, thereby improving the overall strength and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural diagram of one side of the utility model.

[0030] Figure 2 This is a structural diagram of the other side of the utility model.

[0031] Figure 3 It is a cross-sectional view of the utility model.

[0032] Figure 4 A cross-sectional view of the housing.

[0033] Figure 5 A structural diagram of a first assembly portion equipped with contacts and a stopper.

[0034] Figure 6 It is a structural diagram of the first assembly part without the contacts and the limiter.

[0035] Figure 7 for Figure 6 Cross-sectional view of .

[0036] Figure 8 This is a structural diagram of the limiter.

[0037] Fig. 9 A structural diagram of the second assembly part equipped with contacts.

[0038] Fig.10 It is a structural diagram of the second assembly part without any contacts.

[0039] Fig.11 for Fig.10 Cross-sectional view of .

[0040] Numbers in the figure:

[0041] 1. First connector; 2. Second connector; 3. Contact; 4. Power supply device; 5. Housing; 11. First assembly part; 12. First connecting tube; 13. First assembly space; 14. First assembly opening; 15. Limiting member; 16. First matching part; 17. Passing space; 21. Second assembly part; 22. Second connecting tube; 23. Assembly block; 24. Second assembly space; 25. Second assembly opening; 26. Limiting part; 27. Second matching part; 28. Limiting space; 29. ​​Limiting opening; 100. Assembly end; 101. Connection end; 102. Installation space; 151. Limiting rod; 152. Limiting spring; 153. Pressing end; 154. Limiting end; 155. Limiting block; 281. Active area; 282. Limiting area. DETAILED DESCRIPTION

[0042] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments are only specific descriptions of the present invention, and their purpose is to allow those skilled in the art to better understand the technical solution of the present invention, and should not be regarded as limiting the present invention.

[0043] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0045] like Figure 1-11 As shown, a novel ventilation pipe joint comprises a first connector 1 and a second connector 2 connected to different pipelines; the first connector 1 and the second connector 2 are detachably matched, so that the utility model has high flexibility when used, and the operator can easily and conveniently assemble or disassemble the first connector 1 and the second connector 2; the first connector 1 and the second connector 2 are provided with contacts 3, and the contacts 3 are made of conductive material; the first connector 1 and / or the second connector 2 are provided with a power supply device 4 connected to the contacts 3, and the contacts 3 are heated by introducing current and utilizing the resistance thermal effect; through the conductive contacts 3 and the power supply device 4, the utility model realizes conductive heating; through proper heating, the ventilation pipe joint itself is not easily damaged under low temperature conditions, and the sealing material on the ventilation pipe joint is not easy to harden or lose elasticity, so that the joint can still maintain good sealing and connection performance under extreme temperature conditions, so as to improve the stability of the sealing effect and prevent gas leakage; at the same time, the possibility of freezing of the first connector 1 and the second connector 2 can be reduced by heating, so that the flow of gas is more stable.

[0046] In this embodiment, after the first connector 1 and the second connector 2 are matched, the contacts 3 thereon are in contact with each other, thereby enabling current and heat to flow smoothly between the contacts 3 of the first connector 1 and the second connector 2, thereby achieving rapid and uniform heating.

[0047] In some preferred embodiments, the first connector 1 and the second connector 2 are made of heat-conducting materials, so that the contact 3 can quickly transfer heat to various parts of the first connector 1 and the second connector 2 after conductive heating, thereby reducing the possibility of freezing of the first connector 1 and the second connector 2, making the gas circulation more stable.

[0048] In this embodiment, the contact 3 is made of magnetic material, so that when the first connector 1 and the second connector 2 are close to each other, the magnetic interaction between the contacts 3 will help them fit more closely together, which can not only reduce errors and misalignments in the connection process, but also improve the stability of the vent pipe joint during operation, and try to prevent accidental disconnection due to vibration or external force; magnetic materials usually have good electrical conductivity, and current can flow more smoothly between the contacts 3. When current is introduced, the contacts 3 can more effectively convert electrical energy into thermal energy, thereby achieving rapid and uniform heating; magnetic materials usually also have good thermal conductivity. When the contacts 3 generate heat through the resistive thermal effect, the heat can be transferred to other parts of the vent pipe joint more quickly, thereby achieving more uniform and efficient heating.

[0049] In this embodiment, the first connector 1 includes a first assembly portion 11 and a first connecting tube 12 arranged on the first assembly portion 11 and connected to the pipeline; the second connector 2 includes a second assembly portion 21 and a second connecting tube 22 arranged on the second assembly portion 21 and connected to the pipeline; the first assembly portion 11 and the second assembly portion 21 are detachably matched; the first connecting tube 12 and the second connecting tube 22 include an assembly end 100 that matches with each other and a connecting end 101 that matches with the pipeline; after the first connector 1 and the second connector 2 are assembled through the first assembly portion 11 and the second assembly portion 21, the assembly ends 100 of the first connecting tube 12 and the second connecting tube 22 match with each other, and the first connecting tube 12 and the second connecting tube 22 are connected.

[0050] In this embodiment, the first assembly portion 11 includes a first assembly space 13, and a first assembly opening 14 is provided to connect the first assembly space 13 with the outside; the assembly end 100 of the first connecting tube 12 is in the first assembly space 13; the second assembly portion 21 includes an assembly block 23 matching the first assembly space 13, and a second assembly space 24 matching the assembly end 100 of the first connecting tube 12 is provided in the assembly block 23, the second assembly space 24 is connected with the inside of the second connecting tube 22, and a second assembly opening 25 is provided to connect the second assembly space 24 with the outside; when the first assembly portion 11 and the second assembly portion 21 are assembled, the assembly block 23 is connected through the first assembly The opening 14 enters the first assembly space 13, and the assembly end 100 of the first connecting tube 12 enters the second assembly space 24 through the second assembly opening 25; the matching of the first assembly space 13 and the assembly block 23, as well as the matching of the second assembly space 24 and the assembly end 100 of the first connecting tube 12, ensure the structural stability after assembly; the assembly block 23 can be firmly fixed in the first assembly space 13, and the assembly end 100 of the first connecting tube 12 can also be tightly fitted in the second assembly space 24, thereby ensuring the overall stability and sealing of the ventilation pipe joint to the greatest extent; at the same time, it makes the assembly process simpler and more intuitive, does not require complicated tools or skills, and reduces the difficulty of assembly.

[0051] In some preferred embodiments, a sealing structure is provided at the joint between the assembly block 23 and the first assembly space 13 and at the joint between the assembly end 100 of the first connecting pipe 12 and the second assembly space 24 to further improve the overall stability and sealing of the vent pipe joint. The sealing structure may be a sealing ring or other structures.

[0052] In this embodiment, a movable limiting member 15 is provided on the first assembly portion 11, and a limiting portion 26 cooperating with the limiting member 15 is provided on the corresponding second assembly portion 21; the limiting portion 26 limits the movement of the limiting member 15 after cooperating with the limiting member 15; through the setting and interaction of the limiting member 15 and the limiting portion 26, the relative movement between the first assembly portion 11 and the second assembly portion 21 can be effectively limited; the accidental detachment of the ventilation pipe joint due to vibration, external force or other factors during use is prevented as much as possible, thereby improving the stability and reliability of the ventilation pipe joint.

[0053] In this embodiment, a first matching portion 16 arranged along the circumference of the first assembly portion 11 is provided on the outer side thereof, and a second matching portion 27 arranged along the circumference of the second assembly portion 21 is provided on the outer side thereof. When the first assembly portion 11 and the second assembly portion 21 are assembled, the first matching portion 16 abuts against the second matching portion 27, making the assembly process simpler and more intuitive, and convenient for personnel to operate; the contact surfaces of the first matching portion 16 and the second matching portion 27 are planes, so that the first assembly portion 11 and the second assembly portion 21 have higher stability and tightness during assembly; the contact 3 is arranged on the first matching portion 16 abutting against the second matching portion 27, and the first matching portion 16 and the second matching portion 27 are both provided with an installation space 102 for arranging the contact 3, and the contact 3 is arranged in the installation space 102.

[0054] In this embodiment, the limiting member 15 includes a limiting rod 151 and a limiting spring 152, the limiting rod 151 includes a pressing end 153 and a limiting end 154, and the two ends of the limiting spring 152 are respectively connected to the pressing end 153 and the first assembly portion 11; a through space 17 is provided in the first matching portion 16 to penetrate its upper and lower surfaces, and the limiting end 154 passes through the through space 17; the limiting portion 26 includes a limiting space 28 provided in the second matching portion 27, and a limiting opening 29 is provided on the second matching portion 27, and when the first matching portion 16 abuts against the second matching portion 27, the limiting end 154 enters the limiting space 28 through the limiting opening 29; the limiting space 28 includes an active area 281 and a limiting area 282, and the limiting area 282 is provided on the outer side of the active area 281; the positional relationship between the active area 281 and the limiting area 282 is consistent with the extension and compression of the limiting spring 152. The direction of contraction is consistent; a limit block 155 extending outward is provided on the limit end 154, and when the limit spring 152 is extended, the limit block 155 is pushed from the active area 281 into the limit area 282; the limit opening 29 is set corresponding to the active area 281, so that the limit block 155 can abut against the inner wall of the limit area 282 after entering the limit area 282, thereby realizing the cooperation between the limit member 15 and the limit space 28, so that the utility model is more stable and firm after cooperation, and is not easy to loosen; the setting of the limit rod 151 allows the user to operate the limit member 15 by pressing its pressing end 153, so that the user can easily control the state of the limit member 15, thereby conveniently assembling or disassembling the utility model; through the cooperation of the limit rod 151 and the limit spring 152, the assembly strength and assembly stability of the utility model after assembly are improved while the utility model is easy to disassemble.

[0055] In this embodiment, the inner diameter of the movable area 281 corresponding to the movable path direction of the limit rod 151 is greater than or equal to the length of the limit block 155 set at the limit end 154, so that when the utility model is disassembled and assembled, the limit end 154 of the limit rod 151 can enter and exit the limit space 28 without affecting the existing function.

[0056] In the utility model, the number of the limiting spaces 28 is at least two, and each limiting space 28 is evenly distributed on the second matching portion 27; the position and number of the limiting members 15 correspond to the setting of the limiting spaces 28; each limiting space 28 is evenly distributed on the second matching portion 27, and the position and number of the limiting members 15 correspond to the setting of the limiting spaces 28, so that the utility model is more stable as a whole after assembly; in this embodiment, the number of the limiting spaces 28 and the limiting members 15 are both two, and are symmetrically arranged on both sides of the first connector 1 and the second connector 2.

[0057] In this embodiment, a shell 5 is also included, and the shell 5 surrounds the first assembly part 11 and the second assembly part 21; the connecting end 101 and the pressing end 153 of the first connecting tube 12 and the second connecting tube 22 are exposed from the shell 5; the first connecting head 1 and the second connecting head 2 are protected by the setting of the shell 5, thereby improving the overall strength and durability; the shell 5 surrounds the power supply device 4, so that the overall protection effect is better.

[0058] It is worth noting that the power supply device 4 can adopt a replaceable mobile power supply, or a rechargeable mobile power supply, or a wired power supply that continuously supplies power through a power cord; and, according to the form of the power supply device 4, the shell 5 can be fixed on the first assembly part 11 and the second assembly part 21, or can be detachably assembled on the first assembly part 11 and the second assembly part 21.

[0059] The utility model is used for cooperation with a therapeutic instrument; generally, the therapeutic instrument includes a pump body and an airbag cavity, the pump body is connected to a first connector 1 through a pipeline, and a second connector 2 is connected to the airbag cavity through a pipeline, after the first connector 1 and the second connector 2 are assembled, the pump body works to pass compressed air into the airbag cavity; in this embodiment, a heating film is provided on the airbag cavity, and a temperature control module connected to the heating film is provided to control the operation of the heating film; a battery cell is provided in the pipeline connected to the airbag cavity, and the battery cell is respectively connected to the heating film and the contact 3 of the second connector 2, so as to provide energy for the heating of the heating film; after the compressed air enters the airbag cavity, the temperature of the airbag cavity can be increased by the heat of the heating film, so as to avoid as much as possible the occurrence of condensation water, ice and the like inside or outside the airbag cavity due to overcooling that affects the normal circulation of gas.

[0060] It is worth noting that, since both the first connector 1 and the second connector 2 can transmit gas, and both are provided with contacts 3; therefore, both are connected to the airbag cavity or the pump body through pipelines. Example

[0061] The difference between this embodiment and the first embodiment is that the power supply device 4 is arranged outside the utility model.

[0062] In this embodiment, the power supply device 4 is arranged at the location of the pump body, and battery cells are arranged in the pipelines connected to the first connector 1 and the second connector 2; after the first connector 1 is connected to the pump body through the pipeline, the battery cells of the pipeline are respectively connected to the power supply device 4 and the contacts 3 of the first connector 1; after the second connector 2 is connected to the airbag cavity through the pipeline, the battery cells of the pipeline are respectively connected to the heating film and the contacts 3 of the second connector 2; and then when the first connector 1 and the second connector 2 are assembled, not only can the pump body work to pass compressed air into the airbag cavity, but the power supply device 4 can also provide energy for the heating film to generate heat through the cooperation between the battery cells 3 and the contacts 3, so as to realize the heating of the airbag cavity by the heating film.

[0063] It is worth noting that other technical solutions of the present invention belong to the prior art and will not be described in detail.

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the concept of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A novel vent pipe joint, characterized in that: It includes a first connector and a second connector connected to different pipelines; the first connector and the second connector are detachably matched; contacts are arranged on the first connector and the second connector, and a power supply device connected to the contacts is arranged on the first connector and / or the second connector, and the contacts are heated by introducing current and utilizing the resistance thermal effect.

2. A novel vent pipe joint according to claim 1, characterized in that: The contact is made of conductive material or magnetic material.

3. A novel vent pipe joint according to claim 1 or 2, characterized in that: The first connector includes a first assembly portion and a first connecting pipe disposed on the first assembly portion and connected to the pipeline; The second connector includes a second assembly portion and a second connecting pipe disposed on the second assembly portion and connected to the pipeline; The first assembly part and the second assembly part are detachably matched; the first connecting tube and the second connecting tube include assembly ends that match each other and connecting ends that match the pipeline; after the first connecting head and the second connecting head are assembled through the first assembly part and the second assembly part, the assembly ends of the first connecting tube and the second connecting tube match each other and make the first connecting tube and the second connecting tube communicate with each other.

4. A novel vent pipe joint according to claim 3, characterized in that: The first assembly part includes a first assembly space, and a first assembly opening is provided to connect the first assembly space with the outside; the assembly end of the first connecting tube is in the first assembly space; the second assembly part includes an assembly block matching the first assembly space, and a second assembly space matching the assembly end of the first connecting tube is provided in the assembly block, the second assembly space is connected with the inside of the second connecting tube, and a second assembly opening is provided to connect the second assembly space with the outside; when the first assembly part and the second assembly part are assembled, the assembly block enters the first assembly space through the first assembly opening, and the assembly end of the first connecting tube enters the second assembly space through the second assembly opening.

5. A novel vent pipe joint according to claim 4, characterized in that: The first assembly part is provided with a movable limiting member, and the corresponding second assembly part is provided with a limiting part cooperating with the limiting member; The limiting part cooperates with the limiting member to limit its movement.

6. A novel vent pipe joint according to claim 5, characterized in that: A first matching portion is arranged along its circumference on the outer side of the first assembly portion, and a second matching portion is arranged along its circumference on the outer side of the second assembly portion. When the first assembly portion and the second assembly portion are assembled, the first matching portion abuts against the second matching portion, and the contact surfaces of the first matching portion and the second matching portion are planes; the contact point is arranged on the first matching portion abutting against the second matching portion.

7. A novel vent pipe joint according to claim 6, characterized in that: The limiting member includes a limiting rod and a limiting spring, the limiting rod includes a pressing end and a limiting end, and the two ends of the limiting spring are respectively connected to the pressing end and the first assembly portion; a through space is provided in the first matching portion to penetrate the upper and lower surfaces thereof, and the limiting end passes through the through space; the limiting portion includes a limiting space provided in the second matching portion, and a limiting opening is provided on the second matching portion, and when the first matching portion abuts against the second matching portion, the limiting end enters the limiting space through the limiting opening; The limiting space includes an active area and a limiting area. The limiting area is arranged on the outer side of the active area, and the limiting opening is arranged corresponding to the active area. The positional relationship between the active area and the limiting area is consistent with the direction of extension and compression of the limiting spring. A limiting block extending outward is arranged on the limiting end, and when the limiting spring is extended, the limiting block is pushed from the active area into the limiting area.

8. A novel vent pipe joint according to claim 7, characterized in that: The inner diameter of the movable area corresponding to the movable path direction of the limiting rod is greater than or equal to the length of the limiting end where the limiting block is set.

9. A novel vent pipe joint according to claim 7, characterized in that: The number of the limiting spaces is at least two, and the limiting spaces are evenly distributed on the second matching portion; the position and number of the limiting members correspond to the setting of the limiting spaces.

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