CN109268601B - Air pipe joint - Google Patents

Air pipe joint Download PDF

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Publication number
CN109268601B
CN109268601B CN201811440833.4A CN201811440833A CN109268601B CN 109268601 B CN109268601 B CN 109268601B CN 201811440833 A CN201811440833 A CN 201811440833A CN 109268601 B CN109268601 B CN 109268601B
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CN
China
Prior art keywords
pressing block
connecting pipe
pipe
air pipe
elastic piece
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Active
Application number
CN201811440833.4A
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Chinese (zh)
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CN109268601A (en
Inventor
段晓成
肖志刚
韩玉鹏
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Weichai Power Co Ltd
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Weichai Power Co Ltd
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Publication date
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Priority to CN201811440833.4A priority Critical patent/CN109268601B/en
Publication of CN109268601A publication Critical patent/CN109268601A/en
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Publication of CN109268601B publication Critical patent/CN109268601B/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00Couplings of the quick-acting type
    • F16L37/08Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/009Combination of a quick-acting type coupling and a conventional one
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/14Joints for pipes of different diameters or cross-section
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00Couplings of the quick-acting type
    • F16L37/08Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/091Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The application discloses trachea joint includes: a connecting pipe; the first elastic piece is arranged in the connecting pipe, is close to the first end of the second connecting pipe and is used for clamping the first air pipe; the second elastic piece is arranged in the connecting pipe, is close to the second end of the connecting pipe and is used for clamping the second air pipe; the first pressing block is provided with one end extending out of the first end and the other end positioned in the connecting pipe and can extrude the first elastic piece in a telescopic mode to enable the first elastic piece to be separated from the first air pipe; the second pressing block is arranged in the connecting pipe, is positioned between the first elastic piece and the second elastic piece, and can extrude the second elastic piece to deform through sliding so as to separate the second elastic piece from the second air pipe; the friction force between the second pressing block and the connecting pipe is larger than the elastic force of the first elastic piece. The first air pipe and the second air pipe with different pipe diameters can be communicated through the air pipe joint, and the use of a special reducing adapter is avoided, so that the purchasing cost and the maintenance cost are reduced, and the waste of a compressed air source is also avoided.

Description

Air pipe joint
Technical Field
The invention relates to the technical field of engines, in particular to a gas pipe connector.
Background
In a compressed air pipeline of an engine, the condition that air pipes with different pipe diameters are connected and communicated is often met. In the prior art, a special reducing adapter is generally used for realizing the communication of air pipes with different pipe diameters in a compressed air pipeline. The communication mode using the special reducing adapter not only can increase purchasing cost, but also needs to additionally increase protection for the special reducing adapter, increases maintenance cost, and can easily cause pressure loss of a compressed air pipeline and waste of a compressed air source once the special reducing adapter is damaged.
Disclosure of Invention
In view of the above, the present invention provides an air pipe joint, which can reduce the production cost of an engine and avoid the waste of a compressed air source.
In order to achieve the purpose, the invention provides the following technical scheme:
a gas line connector for communicating a first gas line and a second gas line, comprising:
a connecting tube having a first end and a second end;
the first elastic piece is arranged in the connecting pipe and close to the first end, and is used for clamping and connecting the first air pipe extending into the first end;
the second elastic piece is arranged in the connecting pipe and close to the second end, and is used for clamping and connecting the second air pipe extending into the second end;
the first pressing block is arranged in the connecting pipe, one end of the first pressing block extends out of the first end, the other end of the first pressing block is located in the connecting pipe, the first pressing block can stretch relative to the connecting pipe, and the first elastic piece can be extruded by stretching and deform, so that the first elastic piece is separated from the first air pipe penetrating through the first pressing block;
the second pressing block is arranged in the connecting pipe in a sliding mode and provided with a communication hole, is positioned between the first elastic piece and the second elastic piece and can slide under the pushing of the first pressing block so as to press the second elastic piece to deform and separate the second elastic piece from the second air pipe; and the friction force between the second pressing block and the connecting pipe is greater than the elastic force of the first elastic piece.
Preferably, in the above air pipe joint, the first elastic member is a belleville spring, an outer edge of the belleville spring is fixedly connected with an inner peripheral wall of the connecting pipe, and a plurality of clamping teeth for clamping the first air pipe are arranged on an inner edge of the belleville spring.
Preferably, in the air pipe joint, the second elastic member is a belleville spring, an outer edge of the belleville spring is fixedly connected with an inner peripheral wall of the connecting pipe, and a plurality of clamping teeth for clamping the second air pipe are arranged on an inner edge of the belleville spring.
Preferably, in the above air pipe joint, an end portion of the first pressure block located in the connection pipe is an inner end portion, and a first accommodation gap is provided between an outer peripheral wall of the inner end portion and an inner peripheral wall of the connection pipe.
Preferably, in the above air pipe joint, the end portion of the second pressing block that presses the second elastic member to deform is a pressing end portion, and a second accommodating gap is formed between an outer peripheral wall of the pressing end portion and an inner peripheral wall of the connecting pipe.
Preferably, in the air pipe joint, a diameter of the first air pipe is larger than a diameter of the second air pipe, and a radial width of the second elastic member is larger than a radial width of the first elastic member.
Preferably, in the above air pipe joint, a first groove is formed in the outer peripheral wall of the first pressing block, the first end of the connecting pipe is provided with a first blocking ring extending into the first groove, and the first blocking ring can block the first pressing block from being separated from the connecting pipe.
Preferably, in the above air pipe joint, a second groove is formed in the outer peripheral wall of the second pressing block, a second retaining ring is convexly arranged on the inner peripheral wall of the connecting pipe, and the second retaining ring extends into the second groove to prevent the second pressing block from excessively sliding in the connecting pipe.
Preferably, in the above air pipe joint, the second end of the connecting pipe is a constricted end, and a thread is provided on an outer peripheral wall of the constricted end.
The invention provides a gas pipe joint, wherein a first elastic part, a second elastic part and a second pressing block are arranged in a connecting pipe, the second pressing block is positioned between the two elastic parts, a first pressing block is arranged at the first end of the connecting pipe, a first gas pipe can penetrate through the first pressing block and extend into the connecting pipe and is clamped by the first elastic part, a second gas pipe can extend into the connecting pipe from the second end of the connecting pipe and is clamped by the second elastic part, and the clamped first gas pipe and the clamped second gas pipe are communicated through a communicating hole formed in the second pressing block; one end of the first pressing block extends out of the connecting pipe, and the other end of the first pressing block is positioned in the connecting pipe and can stretch relative to the connecting pipe; when the air pipe connector is required to be connected with a first air pipe, one end, extending out of the connecting pipe, of the first pressing block can be pressed, the end, located in the connecting pipe, of the first pressing block moves towards the inside of the connecting pipe to extrude the first elastic piece, the first elastic piece is elastically deformed under the extrusion of the first pressing block and the abutting of the second pressing block due to the abutting of the first elastic piece and the second pressing block, the first elastic piece after elastic deformation keeps away from a space, the first air pipe can extend into the connecting pipe in place after penetrating through the first pressing block, then the pressing force on the first pressing block is removed, the first pressing block reversely extends out under the elastic force of the first elastic piece, and meanwhile, the first elastic piece restored in an original shape tightly clamps the first air pipe, so that the first air pipe is fixedly connected with the first end of the connecting pipe in a sealing manner; when the air pipe joint is required to be connected with the second air pipe, the first pressing block is pressed again, meanwhile, the position of the first air pipe is ensured to be unchanged in the process that the first elastic piece is elastically deformed (if the first air pipe is connected with the second air pipe, the operation is not required), after the first pressing block is in contact with the second pressing block due to the elastic deformation of the first elastic piece, the pressing force is continuously applied to the first pressing block, so that the second pressing block can move along with the first pressing block under the pushing action of the first pressing block, when the second pressing block moves to the arrangement position of the second elastic piece, the second elastic piece is extruded to generate elastic deformation along with the continuous movement, so as to open a space for the second air pipe, so that the second air pipe passing through the second end can stretch into place in the connecting pipe, then the pressing force is removed, the second elastic piece recovers to clamp the second air pipe, and meanwhile, the second pressing block is recovered to the original position under the elastic action of the second elastic piece, the first pressing block is restored to the original position under the elastic action of the first elastic piece, so that the connection of the air pipe joint, the first air pipe and the second air pipe is completed. When foretell first trachea and second trachea are the trachea of different pipe diameters, just can realize the tracheal intercommunication of different pipe diameters through above-mentioned air pipe joint, avoided the use of special reducing crossover sub to reduce purchasing cost and maintenance cost, also avoided the waste of compressed air supply simultaneously.
In addition, the air pipe joint with the structure has the advantages of simple structure and convenience in operation, and can save time and labor in operation while realizing quick assembly and disassembly of the air pipe.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a sectional view of a gas pipe joint according to an embodiment of the present invention.
In the context of figure 1 of the drawings,
1-connecting pipe, 2-first elastic piece, 3-second elastic piece, 4-first pressing block, 5-second pressing block, 6-first accommodating gap, 7-second accommodating gap, 8-first groove, 9-first baffle ring, 10-second groove, 11-second baffle ring and 12-thread.
Detailed Description
The invention provides an air pipe joint which can reduce the production cost of an engine and simultaneously avoid the waste of a compressed air source.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the air pipe joint provided by the embodiment of the present invention is mainly applied to a compressed air pipeline of an engine, and mainly comprises a connecting pipe 1, a first elastic member 2, a second elastic member 3, a first pressing block 4 and a second pressing block 5 (the first pressing block 4 and the second pressing block 5 are preferably cylindrical structures with through holes), wherein the connecting pipe 1 made of metal material has a first end allowing the first air pipe to be inserted and a second end allowing the second air pipe to be inserted, the first elastic member 2 and the second elastic member 3 are both arranged in the connecting pipe 1, the first elastic member 2 is arranged near the first end for clamping the first air pipe inserted into the first end to realize the sealing connection of the first air pipe and the connecting pipe 1, the second elastic member 3 is arranged near the second end for clamping the second air pipe inserted into the second end to realize the sealing connection of the second air pipe and the connecting pipe 1, the first pressing block 4 is arranged at the first end and can be penetrated by the first air pipe, one end of the two ends of the first pressing block 4 extends out of the connecting pipe 1, the other end of the first pressing block 4 is positioned in the connecting pipe 1, meanwhile, the first pressing block 4 can stretch and retract relative to the connecting pipe 1, when an operator presses one end of the first pressing block 4, which is positioned outside the connecting pipe 1, in the connecting pipe 1, the first pressing block 4 shrinks towards the inside of the connecting pipe 1, one end of the first pressing block 4, which is positioned in the connecting pipe 1, can press the first elastic part 2, which is abutted by the second pressing block 5, so that the second elastic part 3 is elastically deformed under the matching of the first pressing block 4 and the second pressing block 5, the deformed first elastic part 2 can avoid a space, so that the first air pipe is not blocked and is inserted in place in the connecting pipe 1, then the pressing force on the first pressing block 4 is removed, and the first elastic part 2 is restored to the original shape, in the process, the first elastic piece 2 clamps the first air pipe, so that the first air pipe is in sealed connection with the connecting pipe 1, and the first pressing block 4 extends out of the connecting pipe 1 under the elastic action of the first elastic piece 2 until the first pressing block returns to the initial position; although the second pressing block 5 is slidably disposed in the connecting pipe 1, the friction force between the second pressing block 5 and the connecting pipe 1 needs to be greater than the elastic force of the first elastic member 2 to ensure that the first elastic member 2 can be extruded and deformed by the first pressing block 4 under the abutting positioning of the second pressing block 5, when the second gas pipe needs to be connected, the first pressing block 4 can be pressed into the connecting pipe 1 again in the same process, after the first pressing block 4 extrudes the first elastic member 2 to complete the elastic deformation, the first pressing block 4 and the second pressing block 5 are rigidly connected, at this time, sufficient pressing force is continuously applied to the first pressing block 4, the first pressing block 4 can push the second pressing block 5 to slide in the connecting pipe 1, and along with the sliding, the second pressing block 5 can extrude the second elastic member 3 to generate the elastic deformation, so that the second elastic member 3 as the first elastic member 2, and give way to the second gas pipe, make second elastic component 3 can not form to block the second trachea again and can make the second trachea insert in place in connecting pipe 1, later remove the pressing force for second elastic component 3 reconversion, second elastic component 3 just can the chucking second trachea, thereby realize the sealing connection of second trachea and connecting pipe 1, because the intercommunicating pore has been seted up at the central part of second briquetting 5, so the intercommunication through the intercommunicating pore can realize first trachea and the tracheal sealing connection of second. In the process of restoring the second elastic part 3, the second pressing block 5 slides reversely to restore to the initial position under the action of the elastic force of the second elastic part 3, and the first pressing block 4 extends reversely under the drive of the elastic force of the second elastic part 3 and the first elastic part 2 until the second pressing block restores to the initial position. When the connecting pipe 1 needs to be separated from the first air pipe and/or the second air pipe, the operations are repeated, when the first elastic part 2 or the second elastic part 3 is elastically deformed, the first elastic part 2 is not clamped with the first air pipe, the second elastic part 3 is not clamped with the second air pipe, and the first air pipe and/or the second air pipe can be withdrawn from the connecting pipe 1.
In this embodiment, in order to further optimize the technical solution, as shown in fig. 1, preferably, the first elastic member 2 is a belleville spring, an outer edge of the belleville spring is fixedly connected to an inner peripheral wall of the connecting pipe 1, and a plurality of clamping teeth for clamping the first air pipe are arranged on an inner edge of the belleville spring; the second elastic part 3 is a belleville spring, the outer edge of the belleville spring is fixedly connected with the inner peripheral wall of the connecting pipe 1, and a plurality of clamping teeth used for clamping the second air pipe are arranged on the inner edge of the belleville spring. The elastic member is preferably a belleville spring because the belleville spring is more suitable for being matched with the tubular member (the connecting pipe 1, the first air pipe and the second air pipe) and has larger elastic force, so that the first air pipe or the second air pipe passing through the belleville spring can be better in sealing connection with the connecting pipe 1, and the working performance of the air pipe joint is more outstanding.
As shown in fig. 1, it is also preferable that the end of the first presser 4 located inside the connection pipe 1 is a pipe inner end, and a first accommodation gap 6 is provided between the outer peripheral wall of the pipe inner end and the inner peripheral wall of the connection pipe 1; the end part of the second pressing block 5, which extrudes the second elastic part 3 to deform, is an extrusion end part, and a second accommodating gap 7 is formed between the outer peripheral wall of the extrusion end part and the inner peripheral wall of the connecting pipe 1. In order to better ensure the rigid connection between the first pressing block 4 and the second pressing block 5, so that the second pressing block 5 can slide smoothly under the pushing of the first pressing block 4, a relatively large first accommodating gap 6 and a relatively large second accommodating gap 7 are preferably additionally arranged, so that part of the first elastic part 2 and part of the second elastic part 3 after deformation can enter the first accommodating gap 6 and the second accommodating gap 7 respectively, so that the connection operation is more convenient, and time and labor are saved.
In this embodiment, preferably, the diameter of first trachea is greater than the diameter of second trachea, and corresponding to it, the radial width of second elastic component 3 is greater than the radial width of first elastic component 2 to make the great first elastic component 2 of internal diameter can the chucking first trachea thick, the less second elastic component 3 of internal diameter can the chucking second trachea thin, in order to realize the tracheal intercommunication of different pipe diameters through the tracheal coupling of the trachea that this embodiment provided. In addition, the first air pipe and the second air pipe can also be air pipes with the same pipe diameter, and the size of the first elastic part 2 corresponding to the first air pipe is the same as that of the second elastic part 3, namely, the air pipe joint provided by the embodiment can also play a role in communicating with a common joint of the air pipes with the same pipe diameter.
Further, as shown in fig. 1, a first groove 8 is formed in the outer peripheral wall of the first pressing block 4, a first blocking ring 9 extending into the first groove 8 is arranged at the first end of the connecting pipe 1, and the first blocking ring 9 can block the first pressing block 4 from completely dropping out of the connecting pipe 1; similarly, a second groove 10 is formed in the outer peripheral wall of the second pressing block 5, a second retaining ring 11 is convexly arranged on the inner peripheral wall of the connecting pipe 1, and the second retaining ring 11 extends into the second groove 10 to prevent the second pressing block 5 from excessively sliding in the connecting pipe 1. When the first pressing block 4 stretches, the first baffle ring 9 always slides in the first groove 8, so that the first pressing block 4 and the connecting pipe 1 are matched to form a limiting structure; when the second pressing block 5 slides, the second retaining ring 11 always slides in the second groove 10, so that the second pressing block 5 and the connecting pipe 1 are matched to form a limiting structure. The setting of this structure can guarantee first briquetting 4 and connecting pipe 1, second briquetting 5 and connecting pipe 1's stable cooperation, avoids because of relative excessive removal leads to connecting failure or the damage of air pipe connector, makes air pipe connector can work of carrying on safely more.
As shown in fig. 1, it is also preferable that the second end of the connection pipe 1 is a constricted end, and a thread 12 is provided on an outer circumferential wall of the constricted end. The inner circumferential wall of this constricted end can be used for abutment against the second resilient element 3, as shown in fig. 1, while the thread 12 provided on the outer circumferential wall can be used for connection to other components in the compressed air line, such as a source of compressed air or the like.
In the present specification, the structure of each part is described in a progressive manner, the structure of each part is mainly described as different from the existing structure, and the whole and partial structure of the air pipe joint can be obtained by combining the structures of the parts.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A trachea joint for communicating a first trachea and a second trachea, comprising:
a connecting tube having a first end and a second end;
the first elastic piece is arranged in the connecting pipe and close to the first end, and is used for clamping and connecting the first air pipe extending into the first end;
the second elastic piece is arranged in the connecting pipe and close to the second end, and is used for clamping and connecting the second air pipe extending into the second end;
the first pressing block is arranged in the connecting pipe, one end of the first pressing block extends out of the first end, the other end of the first pressing block is located in the connecting pipe, the first pressing block can stretch relative to the connecting pipe, and the first elastic piece can be extruded by stretching and deform, so that the first elastic piece is separated from the first air pipe penetrating through the first pressing block;
the second pressing block is arranged in the connecting pipe in a sliding mode and provided with a communication hole, is positioned between the first elastic piece and the second elastic piece and can slide under the pushing of the first pressing block so as to press the second elastic piece to deform and separate the second elastic piece from the second air pipe; and the friction force between the second pressing block and the connecting pipe is greater than the elastic force of the first elastic piece.
2. The air pipe joint as claimed in claim 1, wherein the first elastic member is a belleville spring, and the outer edge of the belleville spring is fixedly connected with the inner peripheral wall of the connecting pipe, and a plurality of teeth for clamping the first air pipe are arranged on the inner edge of the belleville spring.
3. The air pipe joint as claimed in claim 2, wherein the second elastic member is a belleville spring, and the outer edge of the belleville spring is fixedly connected with the inner peripheral wall of the connecting pipe, and a plurality of teeth for clamping the second air pipe are arranged on the inner edge of the belleville spring.
4. The gas pipe connector according to claim 3, wherein the end of the first pressing block located in the connecting pipe is an inner end, and a first accommodating gap is formed between an outer peripheral wall of the inner end and an inner peripheral wall of the connecting pipe.
5. The air pipe connector as claimed in claim 4, wherein the end of the second pressing piece that presses the second elastic member to be deformed is a pressing end, and an outer circumferential wall of the pressing end and an inner circumferential wall of the connection pipe have a second receiving gap therebetween.
6. The air tube connector according to claim 3, wherein the diameter of the first air tube is greater than the diameter of the second air tube, and the radial width of the second elastic member is greater than the radial width of the first elastic member.
7. The gas pipe joint according to any one of claims 1 to 6, wherein a first groove is formed in the outer circumferential wall of the first pressing block, the first end of the connecting pipe is provided with a first stopper ring extending into the first groove, and the first stopper ring can prevent the first pressing block from coming off the connecting pipe.
8. The air pipe connector as claimed in any one of claims 1 to 6, wherein a second groove is formed on the outer circumferential wall of the second pressing block, a second retaining ring is convexly arranged on the inner circumferential wall of the connecting pipe, and the second retaining ring extends into the second groove to prevent the second pressing block from excessively sliding in the connecting pipe.
9. The air pipe connector as claimed in any one of claims 1 to 6, wherein the second end of the connection pipe is a constricted end, and a peripheral wall of the constricted end is provided with a thread.
CN201811440833.4A 2018-11-29 2018-11-29 Air pipe joint Active CN109268601B (en)

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Application Number Priority Date Filing Date Title
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CN109268601A CN109268601A (en) 2019-01-25
CN109268601B true CN109268601B (en) 2020-09-29

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110638088B (en) * 2019-11-05 2022-04-01 龙岩烟草工业有限责任公司 Glue storage device, glue conveying system and tobacco machinery

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1387056A (en) * 1971-03-13 1975-03-12 Pirelli Telescopic joint for conduits containing fluid under pressure
FR2758379B1 (en) * 1997-01-14 1999-02-19 Parker Hannifin Rak Sa IMPLEMENTATION CARTRIDGE FOR A PIPE CONNECTION FOR TAKING PLACE IN A HOUSING
JP2001132881A (en) * 1999-11-08 2001-05-18 Hitachi Metals Ltd Bell-and-spigot
US6988747B2 (en) * 2003-03-20 2006-01-24 Rain Bird Corporation Multi-diameter tube coupling
CN101578470A (en) * 2006-12-18 2009-11-11 Snc公司 Tube coupling device
CN201884846U (en) * 2010-08-09 2011-06-29 浙江艾迪西流体控制股份有限公司 Quick connecting pipe fitting
CN104251358A (en) * 2013-06-28 2014-12-31 株式会社迪思科 Flow adjusting apparatus
CN105090639A (en) * 2015-08-18 2015-11-25 河南省高压电器研究所 Reducing two-way pipe joint and reducing two-way pipe joint component
CN107120486A (en) * 2017-05-18 2017-09-01 潘汝锦 The flexible drill holder part of plugging into of stereoplasm tube

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1387056A (en) * 1971-03-13 1975-03-12 Pirelli Telescopic joint for conduits containing fluid under pressure
FR2758379B1 (en) * 1997-01-14 1999-02-19 Parker Hannifin Rak Sa IMPLEMENTATION CARTRIDGE FOR A PIPE CONNECTION FOR TAKING PLACE IN A HOUSING
JP2001132881A (en) * 1999-11-08 2001-05-18 Hitachi Metals Ltd Bell-and-spigot
US6988747B2 (en) * 2003-03-20 2006-01-24 Rain Bird Corporation Multi-diameter tube coupling
CN101578470A (en) * 2006-12-18 2009-11-11 Snc公司 Tube coupling device
CN201884846U (en) * 2010-08-09 2011-06-29 浙江艾迪西流体控制股份有限公司 Quick connecting pipe fitting
CN104251358A (en) * 2013-06-28 2014-12-31 株式会社迪思科 Flow adjusting apparatus
CN105090639A (en) * 2015-08-18 2015-11-25 河南省高压电器研究所 Reducing two-way pipe joint and reducing two-way pipe joint component
CN107120486A (en) * 2017-05-18 2017-09-01 潘汝锦 The flexible drill holder part of plugging into of stereoplasm tube

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