CN114688362A - Pressed Pipe Fittings - Google Patents

Pressed Pipe Fittings Download PDF

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Publication number
CN114688362A
CN114688362A CN202210433109.9A CN202210433109A CN114688362A CN 114688362 A CN114688362 A CN 114688362A CN 202210433109 A CN202210433109 A CN 202210433109A CN 114688362 A CN114688362 A CN 114688362A
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CN
China
Prior art keywords
pipe
hole
elastic pressing
joint body
pressing sheet
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Pending
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CN202210433109.9A
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Chinese (zh)
Inventor
董明
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Dalian Xingang Hydraulic Pipe Fitting Co ltd
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Dalian Xingang Hydraulic Pipe Fitting Co ltd
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Priority to CN202210433109.9A priority Critical patent/CN114688362A/en
Publication of CN114688362A publication Critical patent/CN114688362A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/08—Screw-threaded joints; Forms of screw-threads for such joints with supplementary elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0237—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member specially adapted for use with attachments, e.g. reduction units, T-pieces, bends or the like

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)

Abstract

The invention discloses a pressing sheet type pipe joint, and particularly relates to the technical field of pipe joints. The invention forces the elastic pressing sheet to be gradually flattened and generate radial contraction by continuously screwing the press-mounting nut, the cutting part of the elastic pressing sheet can be pricked into the outer diameter of the ring pipe to firmly bite the pipe, not only the fixing of the pipe is realized, but also the sealing between the pipe and the joint body is realized, and simultaneously the O-shaped rubber ring bears the fluid pressure to generate elastic deformation to block the leakage point between the joint body and the pipe, thereby having good sealing effect.

Description

压片式管接头Pressed Pipe Fittings

技术领域technical field

本发明涉及管接头技术领域，更具体地说是压片式管接头。The present invention relates to the technical field of pipe joints, and more particularly, to a sheet-pressed pipe joint.

背景技术Background technique

在流体传输和控制系统中，管道是用管子、管子联接件和阀门等联接成的用于输送流体的装置，而管接头是常用来连接管路的管子联接件，是管道与管道之间的连接工具，是元件和管道之间可以拆装的连接点，在管件中充当着不可或缺的重要角色。In the fluid transmission and control system, the pipeline is a device used for transporting fluids connected by pipes, pipe couplings and valves, and the pipe joint is a pipe coupling commonly used to connect the pipeline, which is the connection between the pipeline and the pipeline. The connection tool is a detachable connection point between components and pipes, and plays an indispensable role in pipe fittings.

常用的焊接式管接头使用时需要将管子和管接头焊接到一起，操作比较麻烦，尤其是在一些不许动火的地方，这种接头就太不适用了，而且其仅仅靠O型橡胶圈的弹性作用来实现弹性密封的，密封效果较，因此提出压片式管接头。Commonly used welded pipe joints need to weld the pipe and pipe joint together, which is troublesome to operate, especially in some places where fire is not allowed. The elastic effect is used to achieve elastic sealing, and the sealing effect is relatively high. Therefore, a sheet-type pipe joint is proposed.

发明内容SUMMARY OF THE INVENTION

为了克服现有技术的上述缺陷，本发明提供压片式管接头，密封效果好，这种接头简单实用，造价低，又免去焊接动火操作，在后期设备保养及维修方便。In order to overcome the above-mentioned defects of the prior art, the present invention provides a sheet-type pipe joint with good sealing effect, which is simple and practical, low in cost, and eliminates the need for hot welding operation, and is convenient for equipment maintenance and repair in the later stage.

为实现上述目的，本发明提供如下技术方案：压片式管接头，包括接头体、O型橡胶圈、弹性压片和压装螺母，所述O型橡胶圈设在接头体内部，所述弹性压片设在接头体一端，所述压装螺母套设在接头体一端外侧，所述弹性压片设在压装螺母内部，通过拧紧压装螺母使弹性压片被逐渐压平并产生径向收缩将管子死死的咬住，实现对管子的固定，且实现对管子与接头体间的密封，同时O型橡胶圈堵塞住接头体与管子的泄露点，密封效果好。In order to achieve the above purpose, the present invention provides the following technical solutions: a sheet-type pipe joint, including a joint body, an O-shaped rubber ring, an elastic pressing sheet and a press-fit nut, the O-shaped rubber ring is arranged inside the joint body, and the elastic The pressing piece is arranged at one end of the joint body, the pressing nut is sleeved on the outer side of one end of the joint body, and the elastic pressing piece is arranged inside the pressing nut. By tightening the pressing nut, the elastic pressing piece is gradually flattened and radial The shrinkage firmly bites the pipe, realizes the fixing of the pipe, and realizes the sealing between the pipe and the joint body. At the same time, the O-shaped rubber ring blocks the leakage point between the joint body and the pipe, and the sealing effect is good.

优选地，所述接头体内部依次开设有相通的第一内腔和第二内腔，所述第二内腔内径大于第一内腔内径，所述接头体内壁开设有橡胶圈安装槽，所述橡胶圈安装槽设在第二内腔外端且与第二内腔相通，所述O型橡胶圈安装在橡胶圈安装槽内部，便于O型橡胶圈的安装。Preferably, a first inner cavity and a second inner cavity that communicate with each other are sequentially opened inside the joint body, the inner diameter of the second inner cavity is larger than the inner diameter of the first inner cavity, and the inner wall of the joint body is provided with a rubber ring installation groove, so The rubber ring installation groove is arranged at the outer end of the second inner cavity and communicated with the second inner cavity, and the O-shaped rubber ring is installed inside the rubber ring installation groove, which is convenient for the installation of the O-shaped rubber ring.

优选地，所述弹性压片加工成碗形，所述弹性压片内孔内壁与弹性压片靠近接头体的一端外壁形成刃部，所述弹性压片外端径向开有数个沟槽，拧紧压装螺母使弹性压片被逐渐压平并产生径向收缩，弹性压片的刃部会环管子外径扎进去，将管子死死的咬住。Preferably, the elastic pressing sheet is processed into a bowl shape, the inner wall of the inner hole of the elastic pressing sheet and the outer wall of one end of the elastic pressing sheet close to the joint body form a blade, and the outer end of the elastic pressing sheet is radially opened with several grooves, Tighten the press-fit nut so that the elastic pressing piece is gradually flattened and radially contracted, and the blade of the elastic pressing piece will pierce in around the outer diameter of the tube and bite the tube firmly.

优选地，所述压装螺母内部依次开设有相通的第一通孔和第二通孔，所述第一通孔内径大于第二通孔内径，所述弹性压片设在第一通孔内部，所述第一通孔套设在接头体一端外侧，且第一通孔内壁与接头体外端螺纹连接，螺纹连接便于接头体和压装螺母的拆装。Preferably, a first through hole and a second through hole that communicate with each other are sequentially opened inside the press-fit nut, the inner diameter of the first through hole is larger than the inner diameter of the second through hole, and the elastic pressing piece is arranged inside the first through hole The first through hole is sleeved on the outer side of one end of the joint body, and the inner wall of the first through hole is threadedly connected with the outer end of the joint body, and the threaded connection facilitates the disassembly and assembly of the joint body and the press-fitting nut.

优选地，管子一端穿过第二通孔安装在第二内腔内部，所述O型橡胶圈和弹性压片均套设在管子外端。Preferably, one end of the pipe is installed inside the second inner cavity through the second through hole, and the O-shaped rubber ring and the elastic pressing sheet are both sleeved on the outer end of the pipe.

本发明的技术效果和优点：Technical effects and advantages of the present invention:

本发明通过通过弹性压片弹性压片被做成碗形，所述弹性压片内孔内壁与弹性压片靠近接头体的一端外壁形成锋利的刃部，安装时把刃部靠在接头体的端面，外缘卡在压装螺母根部，当持续拧紧压装螺母会迫使弹性压片被逐渐压平并产生径向收缩，刃部会环管子外径扎进去，将管子死死的咬住，到压装螺母拧不动为止，操作完成，不仅实现对管子的固定，且实现对管子与接头体间的密封，同时通过O型橡胶圈承受着流体压力，使其产生弹性变形堵塞住接头体与管子的泄露点，密封效果好，这种接头简单实用，造价低，又免去焊接动火操作，在后期设备保养及维修方便。In the present invention, the elastic pressing sheet is made into a bowl shape through the elastic pressing sheet, the inner wall of the inner hole of the elastic pressing sheet and the outer wall of one end of the elastic pressing sheet close to the joint body form a sharp blade, and the blade is pressed against the joint body during installation. The end face and the outer edge are stuck at the root of the press-fit nut. When the press-fit nut is continuously tightened, the elastic pressing piece will be gradually flattened and radially contracted. The operation is completed until the press-fit nut stops, which not only realizes the fixing of the pipe, but also realizes the sealing between the pipe and the joint body. The leak point of the pipe has a good sealing effect. This kind of joint is simple and practical, with low cost, and eliminates the need for hot welding operation, which is convenient for equipment maintenance and repair in the later stage.

附图说明Description of drawings

图1为本发明的整体结构图；Fig. 1 is the overall structure diagram of the present invention;

图2为本发明的接头体结构图；Fig. 2 is the joint body structure diagram of the present invention;

图3为本发明的弹性压片结构图；Fig. 3 is the elastic pressing sheet structure diagram of the present invention;

图4为本发明图3的侧视图；Fig. 4 is the side view of Fig. 3 of the present invention;

图5为本发明的压装螺母结构图。FIG. 5 is a structural diagram of a press-fit nut of the present invention.

附图标记为：1接头体、2 O型橡胶圈、3弹性压片、4压装螺母、5管子、11第一内腔、12第二内腔、13橡胶圈安装槽、41第一通孔、42第二通孔。The reference numerals are: 1 joint body, 2 O-shaped rubber ring, 3 elastic pressing sheet, 4 press-fit nut, 5 pipe, 11 first inner cavity, 12 second inner cavity, 13 rubber ring installation groove, 41 first pass hole, 42 second through hole.

具体实施方式Detailed ways

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

参照说明书附图1-5，本发明提供压片式管接头，包括接头体1、O型橡胶圈2、弹性压片3和压装螺母4，所述O型橡胶圈2设在接头体1内部，所述接头体1内部依次开设有相通的第一内腔11和第二内腔12，所述第二内腔12内径大于第一内腔11内径，所述接头体1内壁开设有橡胶圈安装槽13，所述橡胶圈安装槽13设在第二内腔12外端且与第二内腔12相通，所述O型橡胶圈2安装在橡胶圈安装槽13内部，通过O型橡胶圈2承受着流体压力，使其产生弹性变形堵塞住接头体1与管子5的泄露点。Referring to the accompanying drawings 1-5 of the specification, the present invention provides a sheet-type pipe joint, which includes a joint body 1, an O-shaped rubber ring 2, an elastic pressing sheet 3 and a press-fit nut 4, and the O-shaped rubber ring 2 is provided on the joint body 1. Inside, the joint body 1 is provided with a first inner cavity 11 and a second inner cavity 12 in sequence, the inner diameter of the second inner cavity 12 is larger than the inner diameter of the first inner cavity 11, and the inner wall of the joint body 1 is provided with rubber Ring installation groove 13, the rubber ring installation groove 13 is provided at the outer end of the second inner cavity 12 and communicated with the second inner cavity 12, the O-shaped rubber ring 2 is installed in the rubber ring installation groove 13, through the O-shaped rubber ring The ring 2 is subjected to fluid pressure, causing it to elastically deform to block the leak point between the joint body 1 and the pipe 5 .

所述弹性压片3设在接头体1一端，所述压装螺母4套设在接头体1一端外侧，所述弹性压片3设在压装螺母4内部，所述压装螺母4内部依次开设有相通的第一通孔41和第二通孔42，所述第一通孔41内径大于第二通孔42内径，所述弹性压片3设在第一通孔41内部。The elastic pressing piece 3 is arranged on one end of the joint body 1, the pressing nut 4 is sleeved on the outer side of one end of the joint body 1, the elastic pressing piece 3 is arranged inside the pressing nut 4, and the inside of the pressing nut 4 is sequentially A first through hole 41 and a second through hole 42 communicate with each other, the inner diameter of the first through hole 41 is larger than the inner diameter of the second through hole 42 , and the elastic pressing piece 3 is arranged inside the first through hole 41 .

所述第一通孔41套设在接头体1一端外侧，且第一通孔41内壁与接头体1外端螺纹连接，螺纹连接便于接头体1和压装螺母4的拆装。The first through hole 41 is sleeved on the outer side of one end of the joint body 1 , and the inner wall of the first through hole 41 is threadedly connected with the outer end of the joint body 1 .

管子5一端穿过第二通孔42安装在第二内腔12内部，所述O型橡胶圈2和弹性压片3均套设在管子5外端，所述弹性压片3加工成碗形，所述弹性压片3内孔内壁与弹性压片3靠近接头体1的一端外壁形成刃部，所述弹性压片3外端径向开有数个沟槽，安装时把弹性压片3刃部靠在接头体1的端面，外缘卡在压装螺母4根部，当持续拧紧压装螺母4会迫使弹性压片3被逐渐压平并产生径向收缩，刃部会环管子5外径扎进去，将管子5死死的咬住。One end of the tube 5 is installed inside the second inner cavity 12 through the second through hole 42, the O-shaped rubber ring 2 and the elastic pressing sheet 3 are both sleeved on the outer end of the tube 5, and the elastic pressing sheet 3 is processed into a bowl shape , the inner wall of the inner hole of the elastic pressing sheet 3 and the outer wall of one end of the elastic pressing sheet 3 close to the joint body 1 form a blade, and the outer end of the elastic pressing sheet 3 has several grooves in the radial direction. The outer edge is stuck at the root of the press-fit nut 4. When the press-fit nut 4 is continuously tightened, the elastic pressing piece 3 will be gradually flattened and radially contracted, and the blade will be tied around the outer diameter of the pipe 5. Go in and bite the tube 5 firmly.

工作原理：在橡胶圈安装槽13内安装O型橡胶圈2，弹性压片3装在压装螺母4内，在管子5上装上压装螺母4和弹性压片3，再把管子5插进接头体1的第二内腔12内并触底之后，逐渐拧紧压装螺母4。Working principle: Install the O-shaped rubber ring 2 in the rubber ring installation groove 13, install the elastic pressing piece 3 in the pressing nut 4, install the pressing nut 4 and the elastic pressing piece 3 on the tube 5, and then insert the tube 5 into the After the second inner cavity 12 of the joint body 1 reaches the bottom and bottoms out, the press-fit nut 4 is gradually tightened.

通过弹性压片3弹性压片被做成碗形，所述弹性压片3内孔内壁与弹性压片3靠近接头体1的一端外壁形成锋利的刃部，安装时把刃部靠在接头体1的端面，外缘卡在压装螺母4根部，当持续拧紧压装螺母4会迫使弹性压片3被逐渐压平并产生径向收缩，刃部会环管子5外径扎进去，将管子5死死的咬住，一直到压装螺母4拧不动为止，操作完成，不仅实现对管子5的固定，且实现对管子5与接头体1间的密封，同时通过O型橡胶圈2承受着流体压力，使其产生弹性变形堵塞住接头体1与管子5的泄露点，密封效果好，这种接头简单实用，造价低，又免去焊接动火操作，在后期设备保养及维修也很方便，只要松开压装螺母4，换一下O型橡胶圈2再重新上紧压装螺母4即可。The elastic pressing piece 3 is made into a bowl shape, the inner wall of the inner hole of the elastic pressing piece 3 and the outer wall of one end of the elastic pressing piece 3 close to the joint body 1 form a sharp blade, and the blade is placed against the joint body during installation. The end face of 1, the outer edge is stuck at the root of the press-fit nut 4. When the press-fit nut 4 is continuously tightened, the elastic pressing piece 3 will be gradually flattened and radially contracted. Bite firmly until the press-fit nut 4 can not be turned, the operation is completed, not only the fixing of the pipe 5 is realized, but also the sealing between the pipe 5 and the joint body 1 is realized. The fluid pressure causes elastic deformation to block the leakage point of the joint body 1 and the pipe 5, and the sealing effect is good. This joint is simple and practical, low in cost, and eliminates the need for hot welding operations. It is also very convenient for equipment maintenance and repair in the later stage. , just loosen the press-fit nut 4, replace the O-ring 2 and then re-tighten the press-fit nut 4.

最后：以上所述仅为本发明的优选实施例而已，并不用于限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。Finally: the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the present invention. within the scope of protection.

Claims (6)

1. The tablet type pipe joint is characterized in that: including joint body (1), O type rubber circle (2), elasticity preforming (3) and pressure equipment nut (4), O type rubber circle (2) are established inside the joint body (1), elasticity preforming (3) are established in joint body (1) one end, pressure equipment nut (4) cover is established in the joint body (1) one end outside, elasticity preforming (3) are established inside pressure equipment nut (4).
2. The barrel fitting of claim 1, wherein: the connector body (1) is internally provided with a first inner cavity (11) and a second inner cavity (12) which are communicated with each other in sequence, and the inner diameter of the second inner cavity (12) is larger than that of the first inner cavity (11).
3. The barrel fitting of claim 2, wherein: connect body (1) inner wall and seted up rubber circle mounting groove (13), rubber circle mounting groove (13) are established in second inner chamber (12) outer end and are communicated with each other with second inner chamber (12), O type rubber circle (2) are installed inside rubber circle mounting groove (13).
4. The barrel fitting of claim 1, wherein: the elastic pressing sheet (3) is processed into a bowl shape, the inner wall of the inner hole of the elastic pressing sheet (3) and the outer wall of one end of the elastic pressing sheet (3) close to the joint body (1) form a blade part, and the outer end of the elastic pressing sheet (3) is radially provided with a plurality of grooves.
5. The barrel fitting of claim 2, wherein: communicating first through-hole (41) and second through-hole (42) have been seted up in proper order to pressure equipment nut (4) inside, first through-hole (41) internal diameter is greater than second through-hole (42) internal diameter, elasticity preforming (3) are established inside first through-hole (41), first through-hole (41) cover is established and is connected the body (1) one end outside, and first through-hole (41) inner wall and the threaded connection of the outer end of the body (1) that connects.
6. The barrel fitting of claim 5, wherein: one end of the pipe (5) penetrates through the second through hole (42) and is installed in the second inner cavity (12), and the O-shaped rubber ring (2) and the elastic pressing sheet (3) are sleeved at the outer end of the pipe (5).
CN202210433109.9A 2022-04-24 2022-04-24 Pressed Pipe Fittings Pending CN114688362A (en)

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Application Number Priority Date Filing Date Title
CN202210433109.9A CN114688362A (en) 2022-04-24 2022-04-24 Pressed Pipe Fittings

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Application Number Priority Date Filing Date Title
CN202210433109.9A CN114688362A (en) 2022-04-24 2022-04-24 Pressed Pipe Fittings

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CN114688362A true CN114688362A (en) 2022-07-01

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4041679A1 (en) * 1990-12-22 1992-06-25 Voss Armaturen Screw connection esp. for metal pipes - has basic part with externally threaded socket, on which is clamping unit, with sealing ring
CN1182179A (en) * 1997-04-23 1998-05-20 孔繁梅 Sealing method for sleeved hydraulic pipe joint
CN1987187A (en) * 2006-12-11 2007-06-27 浙江华夏阀门有限公司 Single and double hoop coenosarc extruded connecting pipe joint
WO2008104561A2 (en) * 2007-03-01 2008-09-04 George Fischer Tpa Srl Joint for connecting pipes
CN101539226A (en) * 2009-04-27 2009-09-23 阮浩丰 Cutting sleeve-type pipe joint
CN203115338U (en) * 2013-03-19 2013-08-07 福派管道系统（上海）有限公司 Compression type single ferrule fitting
CN206530789U (en) * 2016-05-27 2017-09-29 镇江市星球流体控制设备有限公司 Twolip single deck tape-recorder bell and spigot joint
JP2018146027A (en) * 2017-03-03 2018-09-20 ダイキン工業株式会社 Bite-type fittings and air conditioning systems
CN217130596U (en) * 2022-04-24 2022-08-05 大连新钢液压管件有限公司 Pressure sheet type pipe joint

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4041679A1 (en) * 1990-12-22 1992-06-25 Voss Armaturen Screw connection esp. for metal pipes - has basic part with externally threaded socket, on which is clamping unit, with sealing ring
CN1182179A (en) * 1997-04-23 1998-05-20 孔繁梅 Sealing method for sleeved hydraulic pipe joint
CN1987187A (en) * 2006-12-11 2007-06-27 浙江华夏阀门有限公司 Single and double hoop coenosarc extruded connecting pipe joint
WO2008104561A2 (en) * 2007-03-01 2008-09-04 George Fischer Tpa Srl Joint for connecting pipes
CN101539226A (en) * 2009-04-27 2009-09-23 阮浩丰 Cutting sleeve-type pipe joint
CN203115338U (en) * 2013-03-19 2013-08-07 福派管道系统（上海）有限公司 Compression type single ferrule fitting
CN206530789U (en) * 2016-05-27 2017-09-29 镇江市星球流体控制设备有限公司 Twolip single deck tape-recorder bell and spigot joint
JP2018146027A (en) * 2017-03-03 2018-09-20 ダイキン工業株式会社 Bite-type fittings and air conditioning systems
CN217130596U (en) * 2022-04-24 2022-08-05 大连新钢液压管件有限公司 Pressure sheet type pipe joint

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