CN2366661Y - Joint for pipe - Google Patents

Joint for pipe Download PDF

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Publication number
CN2366661Y
CN2366661Y CN 98246707 CN98246707U CN2366661Y CN 2366661 Y CN2366661 Y CN 2366661Y CN 98246707 CN98246707 CN 98246707 CN 98246707 U CN98246707 U CN 98246707U CN 2366661 Y CN2366661 Y CN 2366661Y
Authority
CN
China
Prior art keywords
ring
pipe
nut
joint
snap ring
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 98246707
Other languages
Chinese (zh)
Inventor
陆鉴河
黎明
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.)
JINNUO NEW TYPE BUILDING MATERIAL CO Ltd SHANTOU CITY
Original Assignee
JINNUO NEW TYPE BUILDING MATERIAL CO Ltd SHANTOU CITY
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 JINNUO NEW TYPE BUILDING MATERIAL CO Ltd SHANTOU CITY filed Critical JINNUO NEW TYPE BUILDING MATERIAL CO Ltd SHANTOU CITY
Priority to CN 98246707 priority Critical patent/CN2366661Y/en
Application granted granted Critical
Publication of CN2366661Y publication Critical patent/CN2366661Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to a joint for pipes, which comprises a body, a nut, a sealing ring, a cushion ring and a retainer ring. The utility model is characterized in that the seal ring, the cushion ring and the retainer ring are orderly arranged between the body and the nut side by side, and the retainer ring is connected with the conical surface of the nut. By adopting the structure of the utility model, various forms of joints for pipes can be made, such as throughtype, reducing throughtype, outer tooth straight joint, inner tooth straight joint, elbow, reducing elbow, tee joint, reducing tee, etc. The utility model has a small water resistance coefficient, and the seal and the connection are both on the outer surface of the pipe, which prevents the inner diameter of the pipe from getting smaller at the connecting point, and the local resistance is reduced; the tightness is good, and the damage to the sealing ring can be avoided in installation.

Description

Pipe joint
The utility model relates to a kind of pipe coupling, particularly a kind of pipe joint that is used to connect crosslinked polyethylene pipe.
In the existing crosslinked polyethylene pipe joint, generally a kind of typical structure of Shi Yonging is shown in figure one.This pipe joint is made up of body 1, nut 2, snap ring 3, seal ring 4.Its working principle is to utilize snap ring 3 with the tube outer wall chucking, realizes sealing with seal ring 4 at tube wall simultaneously.The inner core of pipe fitting body 1 must be inserted the pipe endoporus during use, put snap ring 3 in the pipe outside, tightening nuts 2 compresses snap ring 3.Snap ring 3 is opening annular element that inwall has the multiple tracks dentation, radially dwindle after being compressed, the dentation on its inwall just extrudes groove on outer tube surface, makes the internal diameter of snap ring 3 be slightly less than the external diameter of pipe, thereby to pipe move axially the generation resistance, make it and can not extract.After shrinking, snap ring 3 also make the tight seal 4 of plastic tube internal diameter systolic pressure to reach sealing effect.This way in tube wall realization sealing has following shortcoming: the flow area of pipeline is diminished.The inner core wall thickness of general body 1 will be more than 2 millimeters, and the water resistance coefficient is bigger, has increased the pressure loss of pipeline.2, because body 1 inner core wall thickness can not be big, seal ring 4 must be done smallerly, and the endoporus error of pipe is bigger, and it is bad to cause seal ring to cooperate with endoporus, be to cooperate pine, or be to cooperate tension easily at insertion tube period of the day from 11 p.m. to 1 a.m damage seal ring easily because of the screwing force deficiency causes leakage.
The purpose of this utility model is to disclose a kind of pipe joint reliable, water resistance coefficient less pipe joint, particularly crosslinked polyethylene pipe that uses.
The purpose of this utility model is achieved in that pipe joint, comprises body, nut, seal ring, packing ring, snap ring, it is characterized in that: seal ring, packing ring, snap ring are successively and be arranged between body and the nut.
According to above-described pipe joint, it is characterized in that: nut has inner conical surface.
According to above-described pipe joint, it is characterized in that: the snap ring two ends are provided with male cone (strobilus masculinus).
According to above-described pipe joint, it is characterized in that: the snap ring and the nut conical surface join.
According to above-described pipe joint, it is characterized in that: packing ring is provided with inner conical surface.
According to above-described pipe joint, it is characterized in that: the snap ring and the packing ring conical surface join.
Adopt the utility model structure can make various forms of pipe joints, comprise patterns such as straight-through, reducing coupling, outer tooth straight joint, interior tooth straight joint, elbow, reducing elbow, threeway, reducing tee.
The utlity model has following advantage: 1, the water resistance coefficient is little.Because sealing and connection have avoided the pipeline internal diameter to diminish in the connection place all at the outer surface of pipe, have reduced local resistance.2, good seal performance.Because is to be controlling index with the external diameter during crosslinked polyethylene pipe manufacturer, its variation is less, and is better with cooperating of seal ring, thereby the decrement of seal ring guarantees easily, and can avoid damaging seal ring when mounted.
Illustrate:
Fig. 1 is a prior art partial cutaway diagrammatic sketch;
Fig. 2 is the utility model embodiment (free flow coupling) structure partial cut-away view;
Fig. 3 is the utility model embodiment (free flow coupling) user mode structure partial cut-away view.
Numbering explanation: 1, body, 2, nut, 3, snap ring, 4, seal ring, 5, body, 6, nut, 7, seal ring, 8, packing ring, 9, snap ring.
The 2 pairs of the utility model working principles and example structure describe in conjunction with the accompanying drawings: crosslinked polyethylene pipe is inserted in the endoporus of body 5, and seal ring 7, packing ring 8, snap ring 9 are enclosed within outside the pipe, and nut 6 and body 5 are screwed and tighten.In the process of tightening, nut 6 acts on pressure on snap ring 9, packing ring 4 and the seal ring 7 successively by inner conical surface on the one hand, seal ring 7 is compressed to realize sealing, snap ring 9 is under the effect of conical surface pressure on the other hand, dwindle internal diameter gradually, seal ring 7 pressed enough tight after, the internal diameter of snap ring 9 further narrows down to also littler than tube outer diameter, the outer surface of pipe is deformed, form the twice annular groove.Snap ring 9 is stuck in the groove, prevents that pipe from deviating from.

Claims (6)

1, pipe joint comprises body, nut, seal ring, packing ring, snap ring, it is characterized in that: seal ring, packing ring, snap ring are successively and be arranged between body and the nut.
2, pipe joint according to claim 1, it is characterized in that: nut has inner conical surface.
3, pipe joint according to claim 1 is characterized in that: the snap ring two ends are provided with male cone (strobilus masculinus).
4, pipe joint according to claim 1 is characterized in that: the snap ring and the nut conical surface join.
5, pipe joint according to claim 1, it is characterized in that: packing ring is provided with inner conical surface.
6, pipe joint according to claim 1 is characterized in that: the snap ring and the packing ring conical surface join.
CN 98246707 1998-11-16 1998-11-16 Joint for pipe Expired - Fee Related CN2366661Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 98246707 CN2366661Y (en) 1998-11-16 1998-11-16 Joint for pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 98246707 CN2366661Y (en) 1998-11-16 1998-11-16 Joint for pipe

Publications (1)

Publication Number Publication Date
CN2366661Y true CN2366661Y (en) 2000-03-01

Family

ID=33992085

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 98246707 Expired - Fee Related CN2366661Y (en) 1998-11-16 1998-11-16 Joint for pipe

Country Status (1)

Country Link
CN (1) CN2366661Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103206437A (en) * 2013-05-05 2013-07-17 何玉岭 Silicon core tube connecting joint
CN104373724A (en) * 2014-11-14 2015-02-25 张曹斌 Pipe joint fast to install and detach
CN106384991A (en) * 2016-11-15 2017-02-08 中冶(北京)交通科技发展有限公司 Silicon core pipe joint protecting device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103206437A (en) * 2013-05-05 2013-07-17 何玉岭 Silicon core tube connecting joint
CN104373724A (en) * 2014-11-14 2015-02-25 张曹斌 Pipe joint fast to install and detach
CN104373724B (en) * 2014-11-14 2016-08-17 张曹斌 Fast Installation dismounting pipe joint
CN106384991A (en) * 2016-11-15 2017-02-08 中冶(北京)交通科技发展有限公司 Silicon core pipe joint protecting device

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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