CN203384526U - Female straight-through coupling - Google Patents

Female straight-through coupling Download PDF

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Publication number
CN203384526U
CN203384526U CN201320434378.3U CN201320434378U CN203384526U CN 203384526 U CN203384526 U CN 203384526U CN 201320434378 U CN201320434378 U CN 201320434378U CN 203384526 U CN203384526 U CN 203384526U
Authority
CN
China
Prior art keywords
groove
pipe
seal ring
tube
joint
Prior art date
Application number
CN201320434378.3U
Other languages
Chinese (zh)
Inventor
岑攀益
Original Assignee
宁波友谊铜业有限公司
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 宁波友谊铜业有限公司 filed Critical 宁波友谊铜业有限公司
Priority to CN201320434378.3U priority Critical patent/CN203384526U/en
Application granted granted Critical
Publication of CN203384526U publication Critical patent/CN203384526U/en

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Abstract

The utility model discloses a female straight-through coupling. The female straight-through coupling comprises a connecting pipe and a plugging pipe, wherein the internal diameter of the connecting pipe is larger than the external diameter of the plugging pipe; a threaded connection part is arranged on the pipe wall of the inner side of the connecting pipe; a first groove and a second groove are formed in the plugging pipe, the first groove is positioned on the outer side of the second groove, and a seal ring with an N-shaped section is clamped in the first groove; a first annular groove and a second annular groove are respectively formed in two sides of the seal ring, and an O-shaped ring is embedded into the second groove. The female straight-through coupling is secure in connection, good in leak tightness, convenient in assembly and relatively low in manufacturing cost.

Description

The female coupling pipe joint

Technical field

The utility model relates to the pipe joint technical field, especially relates to a kind of female coupling pipe joint.

Background technique

Pipe joint is the connecting element between pipeline, it is tight and firm for pipeline is connected, general hinge screw thread or the groove opened in the end of pipe joint, in order to be connected with pipeline thread or groove, existing pipe joint connects firm not, and sealing is poor, and the pipeline that can not be applicable to high-pressure liquid connects, and assembling is inconvenient, cost of production is higher.

Summary of the invention

The deficiency existed for above-mentioned prior art, the purpose of this utility model will provide a kind of and be connected firmly, the female coupling pipe joint of good airproof performance, and it is easy to assembly, and cost of production is lower.

To achieve these goals, the technological scheme that the utility model adopts is:

A kind of female coupling pipe joint, comprise connecting tube and insertion pipe, the internal diameter of described connecting tube is greater than the external diameter of described insertion pipe, the inboard tube wall of described connecting tube is provided with threaded joints, described insertion pipe is provided with the first groove and the second groove, described the first groove is positioned at the outside of described the second groove, be arranged with the seal ring that cross section is " N " shape in described the first groove, the both sides of described seal ring are respectively equipped with the first circular groove and the second circular groove, in described the second groove, are embedded with round section joint ring.

Wherein, described joint intubate is provided with some helical teeth rings, and the external diameter of described helical teeth ring is reduced outward gradually by inner end.The true dip direction of the outside hypotenuse of described seal ring is consistent with the true dip direction of described helical teeth ring.Described the first circular groove becomes " V " shape with the cross section of described the second circular groove.The mouth of pipe place of described insertion pipe is provided with the flow-guiding mouth of taper.

After adopting technique scheme, the advantage that compared to the prior art the utility model had is:

Female coupling pipe joint described in the utility model, the inboard tube wall of connecting tube is provided with threaded joints.The connecting tube of this female coupling pipe joint is threaded connection section and pipeline is spirally connected, insertion pipe is provided with the first groove and the second groove, described the first groove is positioned at the outside of described the second groove, be arranged with the seal ring that cross section is " N " shape in described the first groove, the both sides of described seal ring are respectively equipped with the first circular groove and the second circular groove, outer end be the first circular groove, by inner end is the second circular groove, in the time of in insertion pipe is inserted in pipeline, the inwall of pipeline pushes described seal ring, seal ring lateral extrusion power and axial friction, make the second circular groove of described seal ring inwardly close up, the first circular groove of described seal ring a little outwards opens, be embedded with round section joint ring in described the second groove, it is connected firmly, good airproof performance, and easy to assembly, cost of production is lower.

The accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated:

Fig. 1: structural representation of the present utility model.

Fig. 2 is the local structure for amplifying schematic diagram in A place in Fig. 1.

In figure, 1: connecting tube; 2: threaded joints; 3: insertion pipe; 4: the first grooves; 5: seal ring; 6: the second grooves; 7: round section joint ring; 8: flow-guiding mouth; 9: the helical teeth ring; 51: the first circular grooves; 52: the second circular grooves.

Embodiment

The following stated is only preferred embodiment of the present utility model, does not therefore limit protection domain of the present utility model.

Embodiment, see shown in Fig. 1 to Fig. 2: a kind of female coupling pipe joint, comprise connecting tube 1 and insertion pipe 3, the internal diameter of described connecting tube 1 is greater than the external diameter of described insertion pipe 3, the inboard tube wall of described connecting tube 1 is provided with threaded joints 2, connecting tube 1 is threaded connection section 2 and is spirally connected with pipeline, insertion pipe 3 is provided with the first groove 4 and the second groove 6, described the first groove 4 is positioned at the outside of described the second groove 6, be arranged with the seal ring 5 that cross section is " N " shape in described the first groove 4, the both sides of described seal ring 5 are respectively equipped with the first circular groove 51 and the second circular groove 52, outer end be the first circular groove 51, by inner end is the second circular groove 52, when insertion pipe 3 is inserted in pipeline, the inwall of pipeline pushes described seal ring 5, seal ring 5 lateral extrusion power and axial frictions, make the second circular groove 52 of described seal ring 5 inwardly close up, the first circular groove 51 of described seal ring 5 a little outwards opens, be embedded with round section joint ring 7 in described the second groove 6, it is connected firmly, good airproof performance, and easy to assembly, cost of production is lower.

Wherein, described joint intubate is provided with some helical teeth rings 9, and the external diameter of described helical teeth ring 9 is reduced outward gradually by inner end.The true dip direction of the outside hypotenuse of described seal ring 5 is consistent with the true dip direction of described helical teeth ring 9.Described the first circular groove 51 becomes " V " shape with the cross section of described the second circular groove 52.The mouth of pipe place of described insertion pipe 3 is provided with the flow-guiding mouth 8 of taper.

Claims (5)

1. a female coupling pipe joint, comprise connecting tube (1) and insertion pipe (3), it is characterized in that: the internal diameter of described connecting tube (1) is greater than the external diameter of described insertion pipe (3), the inboard tube wall of described connecting tube (1) is provided with threaded joints (2), described insertion pipe (3) is provided with the first groove (4) and the second groove (6), described the first groove (4) is positioned at the outside of described the second groove (6), be arranged with the seal ring (5) that cross section is " N " shape in described the first groove (4), the both sides of described seal ring (5) are respectively equipped with the first circular groove (51) and the second circular groove (52), be embedded with round section joint ring (7) in described the second groove (6).
2. female coupling pipe joint according to claim 1, it is characterized in that: described joint intubate is provided with some helical teeth rings (9), and the external diameter of described helical teeth ring (9) is reduced outward gradually by inner end.
3. female coupling pipe joint according to claim 2, it is characterized in that: the true dip direction of the outside hypotenuse of described seal ring (5) is consistent with the true dip direction of described helical teeth ring (9).
4. female coupling pipe joint according to claim 1, it is characterized in that: the cross section of described the first circular groove (51) and described the second circular groove (52) becomes " V " shape.
5. female coupling pipe joint according to claim 1, it is characterized in that: the mouth of pipe place of described insertion pipe (3) is provided with the flow-guiding mouth (8) of taper.
CN201320434378.3U 2013-07-22 2013-07-22 Female straight-through coupling CN203384526U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320434378.3U CN203384526U (en) 2013-07-22 2013-07-22 Female straight-through coupling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320434378.3U CN203384526U (en) 2013-07-22 2013-07-22 Female straight-through coupling

Publications (1)

Publication Number Publication Date
CN203384526U true CN203384526U (en) 2014-01-08

Family

ID=49873014

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320434378.3U CN203384526U (en) 2013-07-22 2013-07-22 Female straight-through coupling

Country Status (1)

Country Link
CN (1) CN203384526U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106051339A (en) * 2016-07-06 2016-10-26 宁波中迪机械有限公司 Sealing joint controller
CN106051341A (en) * 2016-07-06 2016-10-26 宁波中迪机械有限公司 Sealing joint assembly
CN106051340A (en) * 2016-07-06 2016-10-26 宁波中迪机械有限公司 Self-sealing joint
CN106090473A (en) * 2016-07-06 2016-11-09 宁波中迪机械有限公司 A kind of seal nipple controller

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106051339A (en) * 2016-07-06 2016-10-26 宁波中迪机械有限公司 Sealing joint controller
CN106051341A (en) * 2016-07-06 2016-10-26 宁波中迪机械有限公司 Sealing joint assembly
CN106051340A (en) * 2016-07-06 2016-10-26 宁波中迪机械有限公司 Self-sealing joint
CN106090473A (en) * 2016-07-06 2016-11-09 宁波中迪机械有限公司 A kind of seal nipple controller
CN106051340B (en) * 2016-07-06 2018-04-20 宁波中迪机械有限公司 self-sealing joint
CN106051339B (en) * 2016-07-06 2018-11-23 宁波中迪机械有限公司 Seal nipple controller

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C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140108

Termination date: 20140722