CN107893887A - A kind of expansion type joint of flexible pipe - Google Patents

A kind of expansion type joint of flexible pipe Download PDF

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Publication number
CN107893887A
CN107893887A CN201711043929.2A CN201711043929A CN107893887A CN 107893887 A CN107893887 A CN 107893887A CN 201711043929 A CN201711043929 A CN 201711043929A CN 107893887 A CN107893887 A CN 107893887A
Authority
CN
China
Prior art keywords
sleeve
joint
rotary
pipe body
section
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.)
Pending
Application number
CN201711043929.2A
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Chinese (zh)
Inventor
陈凌
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.)
KPS Wuxi Machinery Technology Co Ltd
Original Assignee
KPS Wuxi Machinery Technology 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 KPS Wuxi Machinery Technology Co Ltd filed Critical KPS Wuxi Machinery Technology Co Ltd
Priority to CN201711043929.2A priority Critical patent/CN107893887A/en
Publication of CN107893887A publication Critical patent/CN107893887A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/22Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints 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
    • F16L19/02Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0206Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints Allowing Movement (AREA)

Abstract

The invention discloses a kind of expansion type joint of flexible pipe, including joint pipe body and 2 nut sleeves, joint pipe body is in hollow cylinder, the both ends of joint pipe body are respectively equipped with sleeve pipe changeover portion, the external diameter of sleeve pipe changeover portion is more than the external diameter of body in the middle part of joint pipe body, 2 ringfeders and 2 rotary sleeves are socketed with body in the middle part of joint pipe body, 2 rotary sleeves are located at centre, 2 ringfeders are respectively arranged on the both sides of 2 rotary sleeves, the inner peripheral surface of rotary sleeve is provided with internal thread, outer circumference surface in the middle part of joint pipe body is provided with external screw thread, the internal thread of rotary sleeve is adapted with the external screw thread of joint pipe body, rotary sleeve is divided into smooth section according to the shape of outer circumference surface, external thread section and faceted pebble section, smooth section is towards sleeve pipe changeover portion, the external screw thread of rotary sleeve is adapted with the internal thread of nut sleeve.Compared with prior art, the beneficial effects of the invention are as follows:Installation and removal are convenient, easy to operate, laborsaving, and are not easy to leak, less easy to fall off.

Description

A kind of expansion type joint of flexible pipe
Technical field
The present invention relates to a kind of expansion type joint of flexible pipe.
Background technology
At the production operation scene of enterprise, often there are some equipment using gas or liquid-working-medium, the conveying of medium Pipeline uses flexible pipe, the connection of all kinds of high and low pressure flexible pipes using being a kind of commonplace phenomenon, especially with oxygen, combustion gas, Compressed air and nitrogen, hydrogen, argon, carbon dioxide etc. are even more so for the hot-working unit of working media.The connection side of flexible pipe Formula is typically all using iron wire binding or pipe collar (including being squeezed into pattern pipe collar and screw tension-type pipe collar) connection, this three kinds connections The common feature of mode is tied or banding flexible pipe is produced internal withdraw type crimp, by the inner surface or inner tube of flexible pipe Inner surface, it is anti-slip between tube core (back taper surface pipe joint or smooth straight joint with concentric reducer diameter) outer surface with being connected Frictional resistance realizes sealing and connection, and its attachment force only results from pipe internal surface, in the case of without using special tooling, instrument Its bonding strength, sealing are not easy to ensure, easily leaked, or even come off, and charge and discharge operations are cumbersome, laborious.
CN201010242427.4 discloses a kind of hose coupling, is combined by tube expansion bolt, banded penstock nut, connection nut living Form;The tube expansion bolt has integrally-built thread segment and cylindric bolt head, the external diameter of thread segment and connected flexible pipe Internal diameter match, there is longitudinal hole at the center of the bolt, and the cross sectional shape of the through hole has two kinds, wherein corresponding thread segment part is Circular hole, corresponding bolt head part is regular polygon driving hole;The endoporus of the banded penstock nut is shoulder hole, and reduced diameter section is screw thread Hole, match with the screw thread of tube expansion bolt, the inner wall surface of enlarged diameter section is non slip surface, is matched with the external diameter of connected flexible pipe, soft Manage in the gap between the enlarged diameter section and tube expansion bolt thread section;The endoporus of the connection nut living is shoulder hole, small Diameter segment is unthreaded hole, and for empty set on the cylinder of tube expansion bolt thread Duan Wai gardens, aperture is slightly larger than the external diameter of tube expansion bolt thread section, Enlarged diameter section is screwed hole, is matched with the external screw thread of connected frock, instrument, the internal diameter of the screwed hole is slightly larger than tube expansion bolt spiral shell The external diameter of bolt head, bolt head are located in the screwed hole.
Its advantage is:Bonding strength is high, good seal performance, is not easy to leak, less easy to fall off, and loading, unloading are without special It is easy to operate, quick, laborsaving with instrument, it can complete by hand.
But its shortcoming is:It is divided into three parts, needs size to cooperate between each other, process is cumbersome.
CN200780048258.7 discloses a kind of pipe joint, and it includes the convex shape of cylindrical shape, inserted for above-mentioned convex shape Cylindric concave body, the locking and above-mentioned convex shape of combination and the elastic annular fixture structural unit of above-mentioned concave body entered, wherein, on Stating convex shape includes the first cylindrical portion from its root towards front end, has with above-mentioned first cylindrical portion identical external diameter or than above-mentioned Second cylindrical portion of the small external diameter of the first cylindrical portion, from the inside inclined outside tapered portion in side of above-mentioned second cylindrical portion;It is above-mentioned convex Body also has endless groove between above-mentioned first cylindrical portion and above-mentioned second cylindrical portion;Above-mentioned concave body is inserted with above-mentioned convex from it The opening portion of body towards it is internal include and be inserted with above-mentioned convex shape when contacted with above-mentioned first cylindrical portion the first internal face, with it is upper State the second internal face of the second cylindrical portion contact, from the above-mentioned inclined inner side tapered portion of the inward-facing side of second inwall;Above-mentioned spill Body is also configured with above-mentioned elastic annular fixture structural unit between above-mentioned first internal face and above-mentioned second internal face, and with by upper The two-stage that the holding tank for stating the locking groove of opening portion side and above-mentioned private side is adjacent and is formed;The radius of above-mentioned holding tank is formed The radius of above-mentioned second cylindrical portion must be more than plus length, above-mentioned ring-type obtained from the diameter of above-mentioned elastic annular fixture structural unit The depth of depth and above-mentioned locking groove away from above-mentioned first internal face of above-mentioned first cylindrical portion of slot pitch is formed larger than above-mentioned elasticity The diameter of ring-type fixture structural unit;Above-mentioned elastic annular fixture structural unit has a part for cutting away ring-type and the gap that is formed, in it All diameters are formed smaller than the external diameter of above-mentioned second cylindrical portion;Between the wall and axis of the above-mentioned front of above-mentioned endless groove Angle is 90 °~45 °, angle between the wall and axis of the above-mentioned opening portion side of above-mentioned locking groove be more than or equal to 30 ° and Less than 90 °;Angle between the wall and axis of the above-mentioned front of above-mentioned endless groove is set more than above-mentioned locking groove Angle between the wall and axis of above-mentioned opening portion side;Above-mentioned convex shape has in the above-mentioned front of above-mentioned outside tapered portion 3rd cylindrical portion;Above-mentioned concave body is when the above-mentioned private side of above-mentioned inner side tapered portion has and is inserted with above-mentioned convex shape with above-mentioned the 3rd internal face of three cylindrical portions contact;The pipe joint has the sealing for accommodating the elastic annular containment member for being used to seal fluid Component holding tank, the containment member holding tank is across above-mentioned 3rd internal face or across above-mentioned 3rd internal face and above-mentioned the Both three cylindrical portions;Above-mentioned elastic ring is configured with the above-mentioned containment member holding tank being formed on above-mentioned 3rd internal face Shape containment member;Length on the axis direction of above-mentioned second cylindrical portion is being set to A, from the identical outer of above-mentioned 3rd cylindrical portion The front end of path portion is to after the above-mentioned root side of above-mentioned elastic annular containment member and the contact portion of above-mentioned 3rd cylindrical portion When length on the axis direction at end is set to B, meet A > B relation.
Its shortcoming is that structure is excessively complicated.
The content of the invention
The present invention needs to solve the problems, such as to be to be directed to above-mentioned the deficiencies in the prior art, and provides a kind of expansion type of flexible pipe and connect Head.
In order to solve the above technical problems, the technical solution adopted by the present invention is:
A kind of expansion type joint of flexible pipe, including joint pipe body and 2 nut sleeves, joint pipe body are in hollow cylinder, joint The both ends of body are respectively equipped with sleeve pipe changeover portion, and the external diameter of sleeve pipe changeover portion is more than the external diameter of body in the middle part of joint pipe body, joint 2 ringfeders and 2 rotary sleeves are socketed with body in the middle part of body, 2 rotary sleeves are respectively arranged on 2 located at centre, 2 ringfeders The both sides of rotary sleeve, the inner peripheral surface of rotary sleeve are provided with internal thread, and the outer circumference surface in the middle part of joint pipe body is provided with external screw thread, The internal thread of rotary sleeve is adapted with the external screw thread of joint pipe body, when 2 rotary sleeves rotate to the sleeve pipe changeover portion at both ends respectively When, 2 ringfeders are pushed at the sleeve pipe changeover portion at both ends respectively, and the rotary sleeve of homonymy is nearer from a distance from sleeve pipe changeover portion, rises The deformation of set is bigger, and rotary sleeve is divided into smooth section, external thread section and faceted pebble section, smooth section direction set according to the shape of outer circumference surface Tube transitions section, the inner peripheral surface of nut sleeve are divided axially into inner threaded surface and taper surface along the longitudinal axis, and inner threaded surface is towards joint pipe body Center, the big end of taper surface is towards the center of joint pipe body, the external screw thread of external thread section and the interior spiral shell of nut sleeve on rotary sleeve The internal thread in line face is adapted.
The external diameter of rotary sleeve is adapted with the internal diameter of flexible pipe waiting.
The longitudinal section of sleeve pipe changeover portion is tapered, and outwardly, and the outer circumference surface of sleeve pipe changeover portion is provided with anti-slide saw to small end Tooth, center of the saw cutting edge of a knife or a sword towards joint pipe body of anti-skidding sawtooth.
Rotary sleeve is flexible member, and external diameter of the rotary sleeve before being extruded is adapted with the internal diameter of flexible pipe waiting.
The width of nut sleeve adds the width of external thread section more than the width of smooth section.
Compared with prior art, the beneficial effects of the invention are as follows:Installation and removal are convenient, easy to operate, laborsaving, and are not easy Leakage, it is less easy to fall off.
Brief description of the drawings
Fig. 1 is the structural representation of the expansion type joint of the flexible pipe of the present invention.
Wherein, 1- joint pipe bodies, 2- nut sleeves, 3- sleeve pipe changeover portions, 4- ringfeders, 5- rotary sleeves, 7- smooth sections, the outer spiral shells of 8- Line section, 9- faceted pebble sections, 10- inner threaded surfaces, 11- taper surfaces.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
Figure is included with lower component:Joint pipe body 1, nut sleeve 2, sleeve pipe changeover portion 3, ringfeder 4, rotary sleeve 5, smooth section 7, External thread section 8, faceted pebble section 9, inner threaded surface 10 and taper surface 11.
As shown in figure 1, a kind of expansion type joint of flexible pipe, including joint pipe body and 2 nut sleeves, joint pipe body is in hollow Cylinder, the both ends of joint pipe body are respectively equipped with sleeve pipe changeover portion, and the external diameter of sleeve pipe changeover portion is more than joint pipe body central tube The external diameter of body, 2 ringfeders and 2 rotary sleeves is socketed with the body in the middle part of joint pipe body, located at centre, 2 rise 2 rotary sleeves Set is respectively arranged on the both sides of 2 rotary sleeves, and the inner peripheral surface of rotary sleeve is provided with internal thread, the outer circumference surface in the middle part of joint pipe body External screw thread is provided with, the internal thread of rotary sleeve is adapted with the external screw thread of joint pipe body, when 2 rotary sleeves are respectively to the set at both ends When tube transitions section rotates, 2 ringfeders are pushed at the sleeve pipe changeover portion at both ends respectively, and the rotary sleeve of homonymy is from sleeve pipe changeover portion Distance is nearer, and the deformation of ringfeder is bigger, and rotary sleeve is divided into smooth section, external thread section and faceted pebble section according to the shape of outer circumference surface, Smooth section is divided axially into inner threaded surface and taper surface, inner threaded surface towards sleeve pipe changeover portion, the inner peripheral surface of nut sleeve along the longitudinal axis Towards the center of joint pipe body, the big end of taper surface towards the center of joint pipe body, on rotary sleeve the external screw thread of external thread section with The internal thread of the inner threaded surface of nut sleeve is adapted.
The external diameter of rotary sleeve is adapted with the internal diameter of flexible pipe waiting.
The longitudinal section of sleeve pipe changeover portion is tapered, and outwardly, and the outer circumference surface of sleeve pipe changeover portion is provided with anti-slide saw to small end Tooth, center of the saw cutting edge of a knife or a sword towards joint pipe body of anti-skidding sawtooth.
Rotary sleeve is flexible member, and external diameter of the rotary sleeve before being extruded is adapted with the internal diameter of flexible pipe waiting.
The width of nut sleeve adds the width of external thread section more than the width of smooth section.
In use, first 2 nut sleeves are respectively sleeved on two sections flexible pipe waiting, sleeve pipe changeover portion, ringfeder and the rotation of homonymy Pivoted housing is close successively, and ringfeder is maintained at non-squeezed state before socket, then covers two section flexible pipes waiting to joint pipe body respectively Both ends, the mouthpiece cover of flexible pipe waiting, then by nut sleeve and rotary sleeve pretension, then passes through spanner to the smooth section of rotary sleeve Clamp faceted pebble section to exert a force to rotary sleeve, the rotary sleeve of homonymy is approached sleeve pipe changeover portion, so as to extrude ringfeder, after ringfeder is extruded Deform upon, middle part protuberance, flexible pipe waiting and nut sleeve are compressed, so as to complete tube socket, during dismounting, first clamped with spanner Faceted pebble section is exerted a force to rotary sleeve, makes the rotary sleeve of homonymy away from sleeve pipe changeover portion, and ringfeder is recovered to not extruding shape by protuberance state State, after nut sleeve separates with rotary sleeve, you can flexible pipe waiting is dragged down from sleeve pipe changeover portion.
It is complete by above-mentioned description, relevant staff using the above-mentioned desirable embodiment according to the present invention as enlightenment Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention Property scope is not limited to the content on specification, it is necessary to determines its technical scope according to right.

Claims (5)

  1. A kind of 1. expansion type joint of flexible pipe, it is characterised in that:Including joint pipe body and 2 nut sleeves, joint pipe body is in hollow Cylinder, the both ends of joint pipe body are respectively equipped with sleeve pipe changeover portion, and the external diameter of sleeve pipe changeover portion is more than joint pipe body central tube The external diameter of body, 2 ringfeders and 2 rotary sleeves is socketed with the body in the middle part of joint pipe body, located at centre, 2 rise 2 rotary sleeves Set is respectively arranged on the both sides of 2 rotary sleeves, and the inner peripheral surface of rotary sleeve is provided with internal thread, the outer circumference surface in the middle part of joint pipe body External screw thread is provided with, the internal thread of rotary sleeve is adapted with the external screw thread of joint pipe body, when 2 rotary sleeves are respectively to the set at both ends When tube transitions section rotates, 2 ringfeders are pushed at the sleeve pipe changeover portion at both ends respectively, and the rotary sleeve of homonymy is from sleeve pipe changeover portion Distance is nearer, and the deformation of ringfeder is bigger, and rotary sleeve is divided into smooth section, external thread section and faceted pebble section according to the shape of outer circumference surface, Smooth section is divided axially into inner threaded surface and taper surface, inner threaded surface towards sleeve pipe changeover portion, the inner peripheral surface of nut sleeve along the longitudinal axis Towards the center of joint pipe body, the big end of taper surface towards the center of joint pipe body, on rotary sleeve the external screw thread of external thread section with The internal thread of the inner threaded surface of nut sleeve is adapted.
  2. 2. the expansion type joint of flexible pipe according to claim 1, it is characterised in that:The external diameter of rotary sleeve and flexible pipe waiting Internal diameter is adapted.
  3. 3. the expansion type joint of flexible pipe according to claim 1, it is characterised in that:The longitudinal section of sleeve pipe changeover portion is in cone Shape, outwardly, and the outer circumference surface of sleeve pipe changeover portion is provided with anti-skidding sawtooth to small end, and the saw cutting edge of a knife or a sword of anti-skidding sawtooth is towards joint pipe body Center.
  4. 4. the expansion type joint of flexible pipe according to claim 1, it is characterised in that:Rotary sleeve is flexible member, rotary sleeve External diameter before being extruded is adapted with the internal diameter of flexible pipe waiting.
  5. 5. the expansion type joint of flexible pipe according to claim 1, it is characterised in that:The width of nut sleeve is more than smooth section Width adds the width of external thread section.
CN201711043929.2A 2017-10-31 2017-10-31 A kind of expansion type joint of flexible pipe Pending CN107893887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711043929.2A CN107893887A (en) 2017-10-31 2017-10-31 A kind of expansion type joint of flexible pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711043929.2A CN107893887A (en) 2017-10-31 2017-10-31 A kind of expansion type joint of flexible pipe

Publications (1)

Publication Number Publication Date
CN107893887A true CN107893887A (en) 2018-04-10

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CN201711043929.2A Pending CN107893887A (en) 2017-10-31 2017-10-31 A kind of expansion type joint of flexible pipe

Country Status (1)

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CN (1) CN107893887A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111750745A (en) * 2020-06-16 2020-10-09 南京理工大学 Spigot structure for radial positioning of rotary projectile body and fuse
CN113353562A (en) * 2021-06-30 2021-09-07 章丘华明水泥新型建材有限公司 Blockage clearing device of screw conveyor
CN114962807A (en) * 2022-05-19 2022-08-30 延安嘉盛石油机械有限责任公司 Novel low-alloy oil casing

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1479499A (en) * 1974-07-29 1977-07-13 Progar F Pipe fittings
US5558375A (en) * 1995-07-10 1996-09-24 Deere & Company Quick attach, reusable hose fittings
DE29912885U1 (en) * 1999-07-23 2000-09-07 Stükerjürgen, Ferdinand, 33397 Rietberg Coupling piece for nipple pipes
US20080272590A1 (en) * 2007-05-02 2008-11-06 Howard Joseph D Reusable fitting, connector assembly and kit
CN203656394U (en) * 2014-01-10 2014-06-18 浙江龙越管业有限公司 Hot water pipe joint
CN206204937U (en) * 2016-11-07 2017-05-31 海盐机械设备制造有限公司 A kind of pile tube connector easy to install
CN206338288U (en) * 2016-12-30 2017-07-18 厦门农丰园大棚开发有限公司 A kind of straight tube connector applied to greenhouse
CN207455001U (en) * 2017-10-31 2018-06-05 无锡康柏斯机械科技有限公司 A kind of extrusion type joint of hose

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1479499A (en) * 1974-07-29 1977-07-13 Progar F Pipe fittings
US5558375A (en) * 1995-07-10 1996-09-24 Deere & Company Quick attach, reusable hose fittings
DE29912885U1 (en) * 1999-07-23 2000-09-07 Stükerjürgen, Ferdinand, 33397 Rietberg Coupling piece for nipple pipes
US20080272590A1 (en) * 2007-05-02 2008-11-06 Howard Joseph D Reusable fitting, connector assembly and kit
CN203656394U (en) * 2014-01-10 2014-06-18 浙江龙越管业有限公司 Hot water pipe joint
CN206204937U (en) * 2016-11-07 2017-05-31 海盐机械设备制造有限公司 A kind of pile tube connector easy to install
CN206338288U (en) * 2016-12-30 2017-07-18 厦门农丰园大棚开发有限公司 A kind of straight tube connector applied to greenhouse
CN207455001U (en) * 2017-10-31 2018-06-05 无锡康柏斯机械科技有限公司 A kind of extrusion type joint of hose

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111750745A (en) * 2020-06-16 2020-10-09 南京理工大学 Spigot structure for radial positioning of rotary projectile body and fuse
CN111750745B (en) * 2020-06-16 2024-04-05 南京理工大学 Spigot structure for radial positioning of rotary projectile body and fuze
CN113353562A (en) * 2021-06-30 2021-09-07 章丘华明水泥新型建材有限公司 Blockage clearing device of screw conveyor
CN114962807A (en) * 2022-05-19 2022-08-30 延安嘉盛石油机械有限责任公司 Novel low-alloy oil casing
CN114962807B (en) * 2022-05-19 2024-05-03 延安嘉盛石油机械有限责任公司 Novel low alloy oil sleeve

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Application publication date: 20180410

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