CN2397346Y - Joint for connecting steel plastic composited tube - Google Patents

Joint for connecting steel plastic composited tube Download PDF

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Publication number
CN2397346Y
CN2397346Y CN 99240356 CN99240356U CN2397346Y CN 2397346 Y CN2397346 Y CN 2397346Y CN 99240356 CN99240356 CN 99240356 CN 99240356 U CN99240356 U CN 99240356U CN 2397346 Y CN2397346 Y CN 2397346Y
Authority
CN
China
Prior art keywords
steel
plastic composite
joint
clip
composite pipe
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 99240356
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Chinese (zh)
Inventor
吴爱国
Original Assignee
吴爱国
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 吴爱国 filed Critical 吴爱国
Priority to CN 99240356 priority Critical patent/CN2397346Y/en
Application granted granted Critical
Publication of CN2397346Y publication Critical patent/CN2397346Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a joint for being connected with steel-plastic composite pipes, which comprises a joint body 1, a nut 2, and a clamping hoop 3. An outer ring 11 and an inner ring 12 of the joint body 1 form a cavity. The outer surface of the inner ring 12 is a circular table side surface, and a conical angle of the outer surface of the inner ring 12 is p. An annular clamping tooth 31 is arranged on the inner surface of the clamping hoop 3, and the outer surface of the clamping hoop 3 and the inner cylindrical surface of the outer ring 11 are matched. An outer thread 13 is arranged on the outer cylindrical surface of the outer ring 11, and the outer thread of the outer ring 11 and an inner thread 21 of the nut 2 are engaged. The inner side of the end part of the nut 2 and the side surface on the outer end of the clamping hoop 3 are butted. The joint for being connected with steel-plastic composite pipes is suitable for the connection of steel-plastic composite pipes, or a steel pipe and a steel-plastic composite pipe. The joint for being connected with steel-plastic composite pipes has firm and convenient connection, and good sealing performance.

Description

Be used to connect the joint of steel-plastic composite pipe
The utility model relates to a kind of pipe joint, more particularly relates to a kind of joint that connects steel-plastic composite pipe.
At present, connect the joint of pipe, the one, be used for the connection between the metal tube, adopt and on joint and pipe, attack threading respectively, use threaded engagement, and on screw thread the place mat rubber belt sealing; The 2nd, be used for the connection between the plastic tube, adopt spigot and socket type, promptly directly plastic pipe being expanded is locked on pipe joint.Steel-plastic composite pipe is made up of metal layer, plastic layer, and plastic layer is positioned at the outer surface of metal layer or the inside and outside surface that plastic layer is positioned at metal layer, and metal layer and plastic layer are connected as a single entity.Metal layer is arranged in the steel-plastic composite pipe, and pipe is hard, is difficult for expanding, and tube expansion can't be locked on pipe joint; And because plastic layer is positioned at the inside and outside surface of pipe, at the inside and outside surperficial tapping of pipe, employing is threaded insecure.Therefore the steel-plastic composite pipe joint is different with the structural requirement of metallic pipe coupling, joint for plastic tube.
It is a kind of rational in infrastructure, easy to connect, firm that the purpose of this utility model is to provide, and the joint that is used to connect steel-plastic composite pipe of good seal performance.
The purpose of this utility model is achieved through the following technical solutions.The above-mentioned joint that is used to connect steel-plastic composite pipe that provides, it comprises the clip of fittings body, nut, anchor ear steel-plastic composite pipe, difference is: the end of above-mentioned fittings body is equipped with toroidal cavity that constitute, that be used to place clip and steel-plastic composite pipe between outer shroud and the interior ring, interior ring outer side surface is a frustum cone side, its cone angle is p, and interior ring outer end diameter is d 2, its inner end diameter is d 1, clip is equipped with opening, and the clip internal surface is equipped with annular latch, and the clip outer surface matches with above-mentioned outer shroud inner cylindrical surface, and the outer shroud external cylindrical surface is equipped with outside thread, the internal thread interlock of its outside thread and above-mentioned nut 2, the inboard and above-mentioned clip outer end apical grafting in nut termination.
The inboard of the outer shroud on the above-mentioned fittings body is equipped with chamfering α, and above-mentioned clip is equipped with undercut ss, and chamfering α on the outer shroud and the undercut ss on the clip match.
The cone angle p of ring frustum cone side is 1: 5 to 1: 30 in above-mentioned.
The cavity bottom that constitutes between above-mentioned outer shroud and the interior ring is equipped with seal washer 5.
The axial length L of the interior ring on the above-mentioned fittings body 1Axial length L greater than its outer shroud 2, it is more convenient to connect steel-plastic composite pipe.
The outer end diameter d of the interior ring on the above-mentioned fittings body 2Less than the inner diameter d of the steel plastic composite pipe of above-mentioned clip anchor ear, its inner end diameter d 1Inner diameter d greater than the steel plastic composite pipe of above-mentioned clip anchor ear.
The advantage that the joint that is used to connect steel-plastic composite pipe of the present utility model has compared with prior art is as follows:
1, rotates the nut of this joint, the axial force that nut through hole inboard produces clip, the clip of anchor ear steel-plastic composite pipe moves axially with respect to fittings body, ring outer surface is a frustum cone side in the fittings body, latch to the clip internal surface produces radial pressure simultaneously, the clip opened gap dwindles, the inboard latch of clip embeds by the plastic layer 41 of the steel-plastic composite pipe outer surface of anchor ear, meanwhile, the interior ring outer surface of the inboard pressed joint body of steel-plastic composite pipe, it is firm that steel-plastic composite pipe is connected with joint, and can be anti-slip, good seal performance.
2, the inboard of the toroidal cavity that forms at the outer shroud of fittings body and interior ring is provided with seal washer, and when being moved inwards by the steel-plastic composite pipe of clip anchor ear when compressing with it, sealability is better.
3, the interior ring outer surface of fittings body is frustum cone side, its outer end diameter d 2Less than the steel-plastic composite pipe inner diameter d that need connect, steel-plastic composite pipe and fittings body connection and convenient disassembly, its inner end diameter d 1Greater than the steel-plastic composite pipe inner diameter d that need connect, this Guan Yue moves inwards, and the interior ring sealability of steel-plastic composite pipe and joint is good more.
Below in conjunction with accompanying drawing the utility model embodiment is described further.
Fig. 1 is the joint vertical section structure schematic representation that the utility model is used to connect steel-plastic composite pipe;
Fig. 2 is Fig. 1 middle joint body 1 cross-sectional view;
Fig. 3 is clip 3 structural representations among Fig. 1;
Fig. 4 is an A-A cross-sectional view among Fig. 3.
Shown in Fig. 1-4, with commercially available metalwork, through being processed into the joint that is used to connect steel-plastic composite pipe, this pipe joint can be two pass joints, or tee union, or multiple-pass joint, this joint comprises the clip 3 of fittings body 1, nut 2, anchor ear steel-plastic composite pipe 4, the end of fittings body 1 is equipped with outer shroud 11 and interior ring 12, and outer shroud 11 axial lengths are L 1, interior ring 12 axial lengths are L 2, constitute between outer shroud 11 and the interior ring 12, be used to place clip and by the toroidal cavity of the steel plastic composite pipe of clip anchor ear, outer shroud 11 ends are equipped with chamfering α, interior ring 12 outer surfaces are frustum cone side, its cone angle p is 1: 5 to 1: 30, its outer end diameter is d 2, its inner end diameter is d 1Clip 3 is equipped with opening 32, clip 3 internal surfaces are equipped with annular latch 31, clip 3 is equipped with undercut ss, chamfering α on chamfering on the outer shroud 11 and the above-mentioned clip 3 matches, and clip 3 outer surfaces and outer shroud 11 inner cylindrical surfaces match, and the external cylindrical surface of outer shroud 11 is equipped with outside thread 13, its outside thread 13 meshes with the internal thread 21 of nut 2, the inboard and clip 3 outer end apical graftings in nut 2 ends.The tapering p of ring 12 frustum cone sides is 1: 5 to 1: 30 in above-mentioned.The bottom of looping cavity is equipped with seal washer 5 between above-mentioned outer shroud 11 and the interior ring 12.
Be contained in outer shroud 11 upper cap nuts 2 of fittings body 1 when rotation, nut 2 moves axially, nut 2 through holes are inboard promote clip 3 and with the steel-plastic composite pipe 4 of its anchor ear, opposing tabs body 1 moves axially together, move inwards more, clip 3 and mobile more inwards by the steel-plastic composite pipe 4 of its anchor ear, the frustum cone side that interior ring 11 on the fittings body 1 has tapering is big more to the radial pressure of steel-plastic composite pipe 4 internal surface circumference, it is good more to seal, meanwhile, steel-plastic composite pipe 4 outer surfaces increase annular latch 31 radial pressures on clip 3 internal surfaces, and clip 3 tightens up, and it is dark more that the annular latch 31 in the clip 3 embeds the plastic layer 41 of steel-plastic composite pipe 4 appearances.Both anti-slip effect seals again.When steel-plastic composite pipe 4 moved to fittings body 1 cavity bottom, its end compressed seal washer 5, and it is more firm to seal.

Claims (6)

1, a kind ofly is used to connect steel and moulds compound joint, it comprises the clip (3) of fittings body (1), nut (2), anchor ear steel-plastic composite pipe 4, it is characterized in that: the end of above-mentioned fittings body (1) is equipped with the toroidal cavity of outer shroud (11) and interior ring (12) formation, interior ring (12) outer surface is a frustum cone side, its tapering is p, and its outer end outer diameter is d 2, the inner end outer diameter is d 1Clip (3) is equipped with opening (32), clip (3) internal surface is equipped with annular latch (31), clip (3) outer surface matches with above-mentioned outer shroud (11) inner cylindrical surface, the external cylindrical surface of outer shroud (11) is equipped with outside thread (11), its outside thread (13) meshes with the internal thread (21) of above-mentioned nut (2), inboard and clip (3) the one end apical graftings in nut (2) end.
2, the joint that is used to connect steel-plastic composite pipe according to claim 1, it is characterized in that: outer shroud (11) inboard, end on the above-mentioned fittings body (1) is equipped with chamfering α, above-mentioned clip (3) is equipped with undercut ss, and the undercut ss on the chamfering α of outer shroud (11) and the clip (3) matches.
3, the joint that is used to connect steel-plastic composite pipe according to claim 2 is characterized in that: interior ring (12) frustum cone side on the above-mentioned fittings body (1), its tapering p is 1: 5 to 1: 30.
4, the joint that is used to connect steel-plastic composite pipe according to claim 3 is characterized in that: the bottom of the toroidal cavity that constitutes between the outer shroud (11) on the above-mentioned fittings body (1) and its interior ring (12) is equipped with seal washer (5).
5, the joint that is used to connect steel-plastic composite pipe according to claim 4 is characterized in that: the axial length L of the interior ring (12) on the above-mentioned fittings body (1) 1Axial length L greater than its outer shroud (11) 2
6, the joint that is used to connect steel-plastic composite pipe according to claim 5 is characterized in that: the outer end diameter d of the interior ring (12) on the above-mentioned fittings body (1) 2Less than the inner diameter d of the steel-plastic composite pipe (4) of above-mentioned clip (3) anchor ear, its inner end diameter d 1Inner diameter d greater than the steel-plastic composite pipe (4) of above-mentioned clip (3) anchor ear.
CN 99240356 1999-11-17 1999-11-17 Joint for connecting steel plastic composited tube Expired - Fee Related CN2397346Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 99240356 CN2397346Y (en) 1999-11-17 1999-11-17 Joint for connecting steel plastic composited tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 99240356 CN2397346Y (en) 1999-11-17 1999-11-17 Joint for connecting steel plastic composited tube

Publications (1)

Publication Number Publication Date
CN2397346Y true CN2397346Y (en) 2000-09-20

Family

ID=34027413

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 99240356 Expired - Fee Related CN2397346Y (en) 1999-11-17 1999-11-17 Joint for connecting steel plastic composited tube

Country Status (1)

Country Link
CN (1) CN2397346Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102465792A (en) * 2010-11-08 2012-05-23 光阳工业股份有限公司 Connection structure of valve element and air intake element for engine
CN103062563A (en) * 2012-11-08 2013-04-24 广西梧州五一塑料制品有限公司 Detachable plastic tube interface
CN103697269A (en) * 2012-09-27 2014-04-02 凌怀宇 Detachable press-fitting hose connecting pipe fitting
CN106855483A (en) * 2016-12-23 2017-06-16 中国矿业大学 Hydrogen Vapor Pressure fatigue rupture and hydrogen-induced delayed failure sensitivity test equipment and method
CN107489844A (en) * 2017-08-17 2017-12-19 太仓永固精密制件有限公司 A kind of anti-slip seal for pipe joints connector
CN108799668A (en) * 2018-07-14 2018-11-13 唐珊珊 A kind of mounting assembly being connected with pipe fitting convenient for bellows

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102465792A (en) * 2010-11-08 2012-05-23 光阳工业股份有限公司 Connection structure of valve element and air intake element for engine
CN103697269A (en) * 2012-09-27 2014-04-02 凌怀宇 Detachable press-fitting hose connecting pipe fitting
CN103062563A (en) * 2012-11-08 2013-04-24 广西梧州五一塑料制品有限公司 Detachable plastic tube interface
CN106855483A (en) * 2016-12-23 2017-06-16 中国矿业大学 Hydrogen Vapor Pressure fatigue rupture and hydrogen-induced delayed failure sensitivity test equipment and method
CN106855483B (en) * 2016-12-23 2020-02-14 中国矿业大学 Hydrogen pressure fatigue fracture and hydrogen induced hysteresis fracture sensitivity test device and method
CN107489844A (en) * 2017-08-17 2017-12-19 太仓永固精密制件有限公司 A kind of anti-slip seal for pipe joints connector
CN108799668A (en) * 2018-07-14 2018-11-13 唐珊珊 A kind of mounting assembly being connected with pipe fitting convenient for bellows
CN108799668B (en) * 2018-07-14 2020-07-10 江苏宏博机械制造有限公司 Installation component convenient for connection of corrugated pipe and pipe fitting

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee
C19 Lapse of patent right due to non-payment of the annual fee