CN2381871Y - Plastic pipe joint - Google Patents

Plastic pipe joint Download PDF

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Publication number
CN2381871Y
CN2381871Y CN 99216373 CN99216373U CN2381871Y CN 2381871 Y CN2381871 Y CN 2381871Y CN 99216373 CN99216373 CN 99216373 CN 99216373 U CN99216373 U CN 99216373U CN 2381871 Y CN2381871 Y CN 2381871Y
Authority
CN
China
Prior art keywords
core body
bulge loop
seal ring
ring
joint
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 99216373
Other languages
Chinese (zh)
Inventor
邝建新
冯小兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foshan Rifeng Enterprise Co Ltd
Original Assignee
Foshan Rifeng Enterprise Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Foshan Rifeng Enterprise Co Ltd filed Critical Foshan Rifeng Enterprise Co Ltd
Priority to CN 99216373 priority Critical patent/CN2381871Y/en
Application granted granted Critical
Publication of CN2381871Y publication Critical patent/CN2381871Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to a plastic tube joint which comprises a joint body, a cap nut, a core body and a sealing ring, wherein, the middle part of the core body is provided with a bulge loop, the front side of which is provided with a circle of flutes to contain tube ends; the sealing ring is arranged on the cylinder surface of the rear end of the core body close to the bulge loop; the cylinder surface of the front end of the core body is provided with a sealing groove in which the sealing ring is arranged; the inner side end surface of the cap nut is embedded with a metal pad; the pressing ring is arranged between the metal pad and the bulge loop of the core body. The joint has the advantages of high connection strength, good sealing property, easy assembly or disassembly and low cost, and is applicable to angle fitting, three-way and multiple-way joints.

Description

The plastic joint device
The utility model relates to the plastic joint device that a kind of aluminium-plastic composite pipe or plastic tube are used.
Traditional piecing devices that are connected with aluminium-plastic composite pipe or plastic tube (hereinafter to be referred as pipe) mostly are steel structure, though its connectivity robustness and sealing are better, its cost is higher.For reducing the joint cost, plastic construction piecing devices have as shown in Figure 1 appearred, though this joint cost is lower, following deficiency is arranged: the one, the soundness that connects is not high, the rigidity deficiency, behind the locking nut, the easy opposing tabs swing of pipe P; The 2nd, sealing and resistance to pressure are not high, and generally when reaching 95 ℃ of working pressure 0.8MPa, temperature, liquid makes the easily slippage in the joint of easy leakage or pipe; The 3rd, liquid in pipe is together with the contact of aluminium-plastic composite pipe end face aluminium flake, and the time one is long, and some liquid at high temperature can corrode aluminium flake, and influence connects.
The purpose of this utility model is to provide a kind of join strength height, seals the plastic joint device reliable, that cost is low.
The utility model is appeared suddenly like this: these piecing devices look is drawn together joint body, nut, core body, seal ring.The core body middle part is provided with bulge loop, and the front side of bulge loop is provided with the groove that a circle holds tube end, and seal ring is contained on the cylndrical surface of core back-end near bulge loop, is provided with the sealing ditch on core body nose circle cylinder, interior dress seal ring.The nut inner side end is embedded with metal gasket, is equipped with packing ring between metal gasket and core body bulge loop.When the utility model was connected with pipe, the nut and the packing ring that will be embedded with metal gasket earlier were inserted in the pipe, and the core body front end that seal ring will be housed again is pressed in the pipe, and core back-end and bulge loop that seal ring will be housed then import the joint body inner chamber.Behind the locking nut, packing ring is radial contraction on the one hand, the seal ring that stretches in the pipe is sealed, on the other hand the axial compression core body near tube wall and core surface, force the seal ring that stretches in the joint body axially to be compressed distortion and seal, thereby form the firmly connection of sealing again.
It is low to the utlity model has cost, and the advantage of join strength height, good airproof performance can be applicable on elbow, threeway and the multiple-pass joint device.These piecing devices are that 1.5MPa, temperature are under 95 ℃ the condition in working pressure, and through test more than 24 hours, pressure stability does not have and leaks, and easy installation and removal.
Fig. 1 is the ssembly drawing of existing plastic joint device;
Fig. 2 is a ssembly drawing of the present utility model;
Fig. 3 is an exploded view of the present utility model.
The utility model is described in further detail below in conjunction with embodiment and accompanying drawing.Referring to Fig. 2, Fig. 3 (left side is the rear end among the figure, and the right is a front end), these piecing devices are made up of joint body 20, core body 21, seal ring 22, seal ring 23, packing ring 24, metal gasket 25, nut 26.Joint body 20 is provided with the stepped annular groove 201,202,203 and the Transverse plane 204,205 of convergent backward with the end inboard that pipe connects, and the outside is provided with outside thread 206.Packing ring 24 is provided with opening 241; Two ends, the outside are provided with the conical surface 242,243, and the inboard is provided with a plurality of annular tooth 244.Nut 26 inboards are provided with internal thread 261, match with joint body outside thread 206; Inner end is provided with annular groove 262 and Transverse plane 263.Metal gasket 25 insert nuts 26 ends, its outside is cylinder 253 and Transverse plane 252, matches with the annular groove 262 and the Transverse plane 263 of nut 26; Its inboard end is provided with the conical surface 251, matches with an end conical surface 243 of packing ring.Embed metal gasket in nut end, can avoid the conical surface of packing ring directly to be pressed on the nut internal surface and the damage frosting, simultaneously, after being compressed, packing ring cause the suffered radial component of nut to act on the metal gasket, alleviate the suffered active force of nut, thereby avoid nut end to split because of being subjected to the radial force effect.Be with O-ring seals 22 on the cylndrical surface, core body 21 rear end 211, and have a radial direction through hole 212 with for convenience detach.Core body 21 middle parts are provided with bulge loop, and the bulge loop surface is a ladder cylinder 213,214, matches with joint body ladder annular groove 202,203.The rear side of bulge loop is a sealing surface of being close to seal ring 22, and the front side is provided with the ditch that holds pipe P and is pickled with grains or in wine 215, and notch is the conical surface 216, and the even bad conical surface 242 of packing matches.Core body 21 rear ends; Be provided with annular groove 217, interior dress wedge shape sealing ring 23, the end is provided with zigzag fashion annular groove 218.Behind the locking nut 26, core back-end cylinder 211 and bulge loop cylinder 213,214 import respectively in the annular groove face 201,202,203 of joint body, and seal ring 22 forms end face seal near 204; The front end of core body and seal ring 23 stretch among the pipe P and form radial seal.Joint body of these piecing devices and nut adopt plastics to make; Core body, packing ring, metal gasket are made with brass, and the also available stainless steel material of core body and metal gasket is made.

Claims (5)

1. plastic joint device, comprise joint body (20), nut (26), core body (21), seal ring (22), it is characterized in that: the middle part of core body (21) is provided with bulge loop, the front side of bulge loop is provided with a circle and holds the groove (215) of pipe P end, seal ring (22) is contained on the cylndrical surface (211) of core back-end near bulge loop, the sealing ditch (217) of dress seal ring (23) in being provided with on core body (21) nose circle cylinder; Nut (26) inner side end is embedded with metal gasket (25), is equipped with packing ring (24) between the bulge loop of metal gasket (25) and core body (21).
2. piecing devices according to claim 1 is characterized in that described packing ring (24) is provided with opening (241), and two ends, the outside are provided with the conical surface (242), (243), and the inboard is provided with a plurality of annular tooth (244).
3. piecing devices according to claim 2 is characterized in that the notch of described bulge loop groove (215) and the inboard of metal gasket (25) are respectively equipped with the conical surface (216), (251) of matching with the described packing ring two ends conical surfaces (242), (243).
4. piecing devices according to claim 1 is characterized in that having on core body (21) cylndrical surface, rear end (211) radial direction through hole (212) of dismantling usefulness.
5. piecing devices according to claim 1 is characterized in that seal ring (23) is a wedge shape sealing ring.
CN 99216373 1999-07-09 1999-07-09 Plastic pipe joint Expired - Fee Related CN2381871Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 99216373 CN2381871Y (en) 1999-07-09 1999-07-09 Plastic pipe joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 99216373 CN2381871Y (en) 1999-07-09 1999-07-09 Plastic pipe joint

Publications (1)

Publication Number Publication Date
CN2381871Y true CN2381871Y (en) 2000-06-07

Family

ID=34008045

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 99216373 Expired - Fee Related CN2381871Y (en) 1999-07-09 1999-07-09 Plastic pipe joint

Country Status (1)

Country Link
CN (1) CN2381871Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101245883B (en) * 2007-02-16 2011-08-03 势彼尔仕塑胶工业(马)有限公司 A coupling system for polymeric pipes
WO2012155431A1 (en) * 2011-05-16 2012-11-22 南京菲时特管业有限公司 Flexible connecting pipe with corrugated inner pipe
CN103343848A (en) * 2013-06-27 2013-10-09 天津市塑料研究所有限公司 Bonding-free PE tube medical connecting device
CN103398429A (en) * 2013-08-21 2013-11-20 苏州工业园区依利电子贸易有限公司 Connecting pipe of air conditioner internal unit
CN105020519A (en) * 2015-07-31 2015-11-04 宁波世亚燃气仪表管件有限公司 Anti-dismantle tee operated without switching off air source

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101245883B (en) * 2007-02-16 2011-08-03 势彼尔仕塑胶工业(马)有限公司 A coupling system for polymeric pipes
WO2012155431A1 (en) * 2011-05-16 2012-11-22 南京菲时特管业有限公司 Flexible connecting pipe with corrugated inner pipe
CN103343848A (en) * 2013-06-27 2013-10-09 天津市塑料研究所有限公司 Bonding-free PE tube medical connecting device
CN103398429A (en) * 2013-08-21 2013-11-20 苏州工业园区依利电子贸易有限公司 Connecting pipe of air conditioner internal unit
CN105020519A (en) * 2015-07-31 2015-11-04 宁波世亚燃气仪表管件有限公司 Anti-dismantle tee operated without switching off air source

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee