CN105508759B - A kind of straight thread type pipeline connector that soft and hard seal combines - Google Patents
A kind of straight thread type pipeline connector that soft and hard seal combines Download PDFInfo
- Publication number
- CN105508759B CN105508759B CN201610070953.4A CN201610070953A CN105508759B CN 105508759 B CN105508759 B CN 105508759B CN 201610070953 A CN201610070953 A CN 201610070953A CN 105508759 B CN105508759 B CN 105508759B
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- CN
- China
- Prior art keywords
- cutting ferrule
- soft
- rear end
- rotary head
- connector
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints 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
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses the straight thread type pipeline connectors that a kind of soft and hard seal combines, and include the joint body for being connect with pipeline, the nut for the cutting ferrule of sealing and for compressing cutting ferrule；It is provided with mutually matched screw thread on the joint body and nut；The joint body inner cavity is provided with annular groove, and O-ring seals are arranged in the annular groove；The cutting ferrule forward ends thereof O-ring seals, rear end are pre-large post-small tapered sleeve；Further include a rotary head, the rotary head is provided with the conical surface with cutting ferrule rear end fitted seal；The nut is compressed cutting ferrule by rotary head.Straight thread type pipeline connector with above structure is carried out multi-stage sealed in the form of soft and hard seal combination.Since soft seal deformation is big so that requirement of the connector to line size and Facing material substantially reduces.Simultaneously because the presence sealed firmly again so that entirely greatly improved for the more simple soft seal of the reliability of connector.
Description
Technical field
The present invention relates to a kind of straight thread type pipeline connectors applied to pipeline connection.
Background technology
Straight thread type pipeline connector is a kind of widely applies in the connected important part of fluid line, existing bite type tube
The generally hard sealing of road connector, includes the joint body, cutting ferrule and nut being connect with pipeline.It is sharp between cutting ferrule and joint body
Coordinated with the conical surface, nut is for compressing cutting ferrule.While compression, the inner edge on the inside of cutting ferrule is pierced into pipeline outer wall and is formed with
Effect sealing.The hard sealing is very high to size and the material requirement of pipeline itself, once it is undesirable, sealing is just not achieved
Purpose.Even if scar can be left if after the completion of sealing on pipeline, difficulty is caused for secondary use.In addition, existing hard sealing side
Formula can be only achieved the purpose of sealing after must being tightened by tool, it is also more inconvenient to use.
Invention content
In view of this, the present invention provides a kind of straight thread type pipeline connector that soft and hard seal combines, reached using soft and hard seal
The purpose of sealing, it is low to requirements for pipes, and only rely on and manually tighten and can achieve the purpose that sealing.
In order to solve the above technical problems, the technical scheme is that：The straight thread type pipeline that a kind of soft and hard seal combines connects
Head includes the joint body for being connect with pipeline, the nut for the cutting ferrule of sealing and for compressing cutting ferrule；The connector
It is provided with mutually matched screw thread on ontology and nut；The joint body inner cavity is provided with step, which spells with pipeline outer wall
Synthesis accommodates the cavity of O-ring seals；The cutting ferrule forward ends thereof O-ring seals, rear end are pre-large post-small tapered sleeve；Further include
One rotary head, the rotary head are provided with the conical surface with cutting ferrule rear end fitted seal；The nut is compressed cutting ferrule by rotary head.
As an improvement the joint body rear end is provided with the conical surface；The cutting ferrule front end is provided with step so that card
Set front end can extend into annular groove and be contacted with O-ring seals, and make the conical surface in the corners and joint body on step
Contact.By opening up step in cutting ferrule front end so that cutting ferrule front end, which is easy to extend into annular groove, squeezes O-ring seals,
Its deformation is set to reach relatively reliable sealing effect；Secondly, the taper-face contact of wedge angle and joint body rear end on step is squeezing
When pressure, wedge angle generates slight deformation, fills the gap between wedge angle and the conical surface, also plays the purpose of sealing.
As a preferred embodiment, the conical surface on the joint body rear end is 40 ° -50 °.40 ° of -50 ° of conical surfaces and 90 ° of wedge angle
Cooperation so that when cutting ferrule is axially moved after being extruded, wedge angle and conical surface contact are by resultant force axially and radially, and axial force
It is equal in magnitude with radial load.The distribution for being conducive to power in this way is more prone to realize sealing effect.
As an improvement the rotary head is provided with the conical surface with cutting ferrule rear end fitted seal.Between cutting ferrule and nut
One rotary head is set, which is provided with the conical surface coordinated with the tapered sleeve of cutting ferrule rear end, when squeezing, can also form sealing
Face reaches better seal effect.Sealing surface is cooperatively formed by rotary head and cutting ferrule, relatively directly nut is utilized to coordinate shape with tapered sleeve
It is compared at sealing surface, processes smaller, without carrying out specially treated to nut.
As an improvement being provided with the mutually matched conical surface or cambered surface on the inside of the rotary head rear end and nut.Pass through cone
It is even closer that face or cambered surface cooperation make the two combine, and is more prone to stress and is not easy to loosen.
As a preferred embodiment, the taper of the cutting ferrule is 20 ° -30 °.
As a preferred embodiment, the O-ring seals make for silica gel.Silica gel resilience performance is good, and chemical property is stablized, and is not easy
Corrosion.
As a preferred embodiment, the string diameter of the O-ring seals is more than the spacing between annular groove sidewall and pipeline outer wall.When
After O-ring seals are filled into annular groove, a degree of deformation can be generated without cutting ferrule extruding, reaches certain sealing effect
Fruit.In this way, even if later stage cutting ferrule provide after extruding force is inadequate or O-ring seals fatigue, still can be sealed.
The invention has the beneficial effects that：Straight thread type pipeline connector with above structure is combined using soft and hard seal
Form carries out multi-stage sealed.Since soft seal deformation is big so that requirement of the connector to line size and Facing material is dropped significantly
It is low.Simultaneously because the presence sealed firmly again so that entirely greatly improved for the more simple soft seal of the reliability of connector.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
It is marked in figure：1 nut, 2 pipelines, 3 joint bodies, 4O shape sealing rings, 5 cutting ferrules, 6 rotary heads, 7 first layers seal firmly, 8
The second layer seals firmly.
Specific implementation mode
In order to make those skilled in the art more fully understand technical scheme of the present invention, With reference to embodiment
The present invention is described in further detail.
As shown in Figure 1, the present invention includes the joint body 3 for being connect with pipeline 2, cutting ferrule 5 and use for sealing
In the nut 1 for compressing cutting ferrule 5；It is provided with mutually matched screw thread on the joint body 3 and nut 1；In the joint body 3
Chamber is provided with step, which pieces together the cavity for accommodating O-ring seals 4 with pipeline outer wall；O-ring seals 4 make for silica gel.O
The string diameter of shape sealing ring 4 is more than the spacing between annular groove sidewall and 2 outer wall of pipeline.5 forward ends thereof O-ring seals of the cutting ferrule
4, rear end is pre-large post-small tapered sleeve.The taper of 5 rear end of cutting ferrule is 20 ° -30 °.Further include a rotary head 6, the rotary head 6 and card
It covers 5 rear ends and cooperatively forms hard sealing；The nut 1 is compressed cutting ferrule 5 by rotary head 6.It is formed with 5 tapered sleeve shape rear end of cutting ferrule hard close
For envelope there are many mode, best rotary head 6 is provided with that (taper of rotary head can be slightly larger than card with the conical surface of 5 rear end fitted seal of cutting ferrule
The taper of set, 5-10 degree generally bigger than cutting ferrule taper).1 inside of 6 rear end of rotary head and nut be provided with the mutually matched conical surface or
Cambered surface.
3 rear end of joint body is provided with the conical surface；5 front end of the cutting ferrule is provided with step so that 5 front end of cutting ferrule can extend
It is contacted into annular groove with O-ring seals 4, and makes the corners on step and the taper-face contact on joint body 3.Joint body
The conical surface on 3 rear ends is 40 ° -50 °.
The present invention is provided with soft or hard 3 layers of sealing altogether：
First layer is sealed into the soft seal that O-ring seals 4 are formed after 5 crimp of cutting ferrule.
The second layer is sealed into the wedge angle of 5 front end step of cutting ferrule, and to bite the first layer that the conical surface on joint body 3 is formed firmly close
Envelope 7.
The rear end that third layer is sealed into 5 tapered sleeve shape of cutting ferrule mutually squeezes be close to be formed second with the conical surface of 6 front end of rotary head
Layer is hard to seal 8.
The present invention has both the advantages of soft and hard seal, and sealing effect is good, performance is stable and can be by manually assembling energy
Reach sealing effect.
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
The limitation of the present invention, protection scope of the present invention should be subject to claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
Protection scope of the present invention is also should be regarded as into retouching.
Claims (6)
1. the straight thread type pipeline connector that a kind of soft and hard seal combines, includes the joint body for being connect with pipeline, for sealing
Cutting ferrule and nut for compressing cutting ferrule；It is provided with mutually matched screw thread on the joint body and nut；Its feature
It is：The joint body inner cavity is provided with step, which pieces together the cavity for accommodating O-ring seals, the O with pipeline outer wall
Shape sealing ring makes for silica gel, and the string diameter of the O-ring seals is more than the spacing between annular groove sidewall and pipeline outer wall, described
Cutting ferrule forward ends thereof O-ring seals, rear end are pre-large post-small tapered sleeve；Further include a rotary head, the rotary head and cutting ferrule rear end
Cooperatively form hard sealing；The nut is compressed cutting ferrule by rotary head.
2. the straight thread type pipeline connector that a kind of soft and hard seal according to claim 1 combines, it is characterised in that：The connector
Ontology rear end is provided with the conical surface；The cutting ferrule front end is provided with step so that cutting ferrule front end can extend into annular groove and O shapes are close
Seal contacts, and makes the taper-face contact in the corners and joint body on step.
3. the straight thread type pipeline connector that a kind of soft and hard seal according to claim 2 combines, it is characterised in that：The connector
The conical surface on ontology rear end is 40 ° -50 °.
4. the straight thread type pipeline connector that a kind of soft and hard seal according to claim 1 combines, it is characterised in that：The rotary head
It is provided with the conical surface with cutting ferrule rear end fitted seal.
5. the straight thread type pipeline connector that a kind of soft and hard seal according to claim 4 combines, it is characterised in that：The rotary head
It is provided with the mutually matched conical surface or cambered surface on the inside of rear end and nut.
6. the straight thread type pipeline connector that a kind of soft and hard seal according to claim 1 combines, it is characterised in that：The cutting ferrule
Taper be 20 ° -30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610070953.4A CN105508759B (en) | 2016-01-29 | 2016-01-29 | A kind of straight thread type pipeline connector that soft and hard seal combines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610070953.4A CN105508759B (en) | 2016-01-29 | 2016-01-29 | A kind of straight thread type pipeline connector that soft and hard seal combines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105508759A CN105508759A (en) | 2016-04-20 |
| CN105508759B true CN105508759B (en) | 2018-08-10 |
Family
ID=55716951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610070953.4A Active CN105508759B (en) | 2016-01-29 | 2016-01-29 | A kind of straight thread type pipeline connector that soft and hard seal combines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105508759B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420664A (en) * | 2017-06-09 | 2017-12-01 | 浙江索兰德环境科技有限公司 | The soft or hard double seal of metal tube |
| CN109114322B (en) * | 2018-09-28 | 2020-12-25 | 苏州丹顿机电有限公司 | Pipe joint |
| CN110982275A (en) * | 2019-12-16 | 2020-04-10 | 九牧厨卫股份有限公司 | Anti-aging soft and hard composite sealing strip and preparation method thereof |
| CN111750181A (en) * | 2020-07-27 | 2020-10-09 | 南京森佩特机电有限公司 | Hydraulic sealing joint |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA961888A (en) * | 1971-04-15 | 1975-01-28 | Leonard P. Spontelli | Tube fitting |
| CN2588161Y (en) * | 2002-11-04 | 2003-11-26 | 王学敏 | Convenient seal joint for liquid and gas pipe |
| CN201159349Y (en) * | 2008-02-18 | 2008-12-03 | 上海宝钢设备检修有限公司 | Hydraulic system pipe joint |
| CN105065807B (en) * | 2009-02-20 | 2018-04-10 | 斯瓦戈洛克公司 | Conduit fittings with torque collar |
| CN204187168U (en) * | 2014-10-20 | 2015-03-04 | 李明康 | A kind of pipe fitting connects seal arrangement |
| CN205479819U (en) * | 2016-01-29 | 2016-08-17 | 成都市天仁自动化科技有限公司 | Sealed cutting ferrule formula pipe joint who combines of soft or hard |
-
2016
- 2016-01-29 CN CN201610070953.4A patent/CN105508759B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105508759A (en) | 2016-04-20 |
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Effective date of registration: 20220708 Address after: 610000 No. 96 Dayu East Road, Deyuan Town (Jingrong Town), Pidu District, Chengdu City, Sichuan Province Patentee after: CHENGDU LONGXI TECHNOLOGY CO.,LTD. Address before: 611730 No. 2688 Xiyuan Avenue, Southern District of Chengdu Modern Industrial Port, Pixian County, Chengdu City, Sichuan Province Patentee before: CHENGDU TIANREN AUTOMATION SCIENCE & TECHNOLOGY Co.,Ltd. |
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