CN1108478C - Pipe connection - Google Patents
Pipe connection Download PDFInfo
- Publication number
- CN1108478C CN1108478C CN00112902A CN00112902A CN1108478C CN 1108478 C CN1108478 C CN 1108478C CN 00112902 A CN00112902 A CN 00112902A CN 00112902 A CN00112902 A CN 00112902A CN 1108478 C CN1108478 C CN 1108478C
- Authority
- CN
- China
- Prior art keywords
- snap ring
- pipe
- ring
- main body
- aluminium
- 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 - Lifetime
Links
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- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
The present invention relates to a pipe joint which has the main technical characteristics that the pipe joint comprises a main body, wherein an aluminium-plastic compound pipe and a supporting pipe are arranged in the main body, a screw cap is arranged outside the main body, a clamping ring is arranged between the screw cap and the main body, and a clamping port is arranged on the contact surface of the clamping ring and the aluminium-plastic compound pipe; a main sealing ring is arranged between the clamping ring and the main body, the section surface shape of the outer ring of the clamping ring is an inclined surface, and the section surface shape of the portion matched with the inclined surface of the clamping ring on the main body is an inclined surface. Due to the use of the structure, the present invention causes the walking position of each component to be more reasonable and causes the compression rate of the main sealing ring to be higher so as to efficiently prevent leakage.
Description
Technical field
The present invention relates to a kind of pipe joint.
Background technique
In people's daily production and life, various pipelines are necessary tool of transport of water, gas.Mostly pipeline in the past is metallic conduit, exists many shortcomings.Industry has emerged the upsurge that changes the conventional pipelines material both at home and abroad in recent years, present stage mature technique be to replace metallic conduit with aluminium-plastic composite pipe, aluminium-plastic composite pipe is compared with traditional metallic conduit and had the following advantages: nontoxic, corrosion-resistant, light weight, mechanical strength height, resistance to heat is good, brittle temperature is low, long service life, tube fluid resistance are low, less scaling.When aluminium-plastic composite pipe is installed, no matter be that elbow, straight-through, threeway are installed, do not need tapping, but the pipe joint that directly uses body, snap ring, cage ring, seal ring to form just can be finished connection and sealing task.But in present stage, this type of pipe joint exists deficiency: sealing effect is undesirable, and its main cause is the deficiency that walks of each assembly in actual applications, and the compression degree deficiency to seal ring has just caused leakage.
Summary of the invention
The pipe joint that the purpose of this invention is to provide a kind of good sealing effect is to remedy the deficiency of prior art.
The technical solution adopted for the present invention to solve the technical problems is: a kind of pipe joint, comprise body, and flexible pipe is arranged in body; External nut arranged at this, between nut and the body snap ring is arranged, the surface of contact of snap ring and flexible pipe is provided with bayonet socket; Be provided with the primary seal circle between snap ring and the body, it is characterized in that: the outer ring section shape of snap ring is the inclined-plane, and the section shape of the part that matches with the snap ring inclined-plane on the body is the inclined-plane.
Described pipe joint is characterized in that: support tube is arranged in flexible pipe, be with secondary seal ring on the support tube.
Described pipe joint is characterized in that: described flexible pipe is aluminium-plastic composite pipe or polyethylene pipe.
The invention has the beneficial effects as follows: because the present invention has adopted said structure, make that walking of each parts is more reasonable, the compressibility of primary seal circle is higher, thereby has effectively prevented leakage.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Embodiment
As shown in Figure 1, a kind of pipe joint comprises body 1, and aluminium-plastic composite pipe 2 and support tube 3 are arranged in body 1, is provided with secondary seal ring 4 between aluminium-plastic composite pipe 2 and support tube 3; Nut 5 is arranged outside body 1, between nut 5 and the body 1 snap ring 6 is arranged, snap ring 6 is provided with bayonet socket 7 with the surface of contact of aluminium-plastic composite pipe 2; Be provided with primary seal circle 8 between snap ring 6 and the body 1, the outer ring section shape of snap ring 6 is the inclined-plane, and the section shape of the part that matches with snap ring 6 inclined-planes on the body 1 is the inclined-plane.
First with nut 5, snap ring 6, primary seal circle 8 is inserted in successively from the cut ends of aluminium-plastic composite pipe 2.And then the support tube 3 that will package secondary seal ring 4 pushes in the aluminium-plastic composite pipe 2.Then above-mentioned part is pushed in the body 1.The screw thread that matches with nut 5 is arranged on the body 1.Rotary nut 5, in nut 5 rotation drive-in steps, snap ring 6 also advances synchronously and compresses primary seal circle 8 simultaneously, and after being advanced to a certain degree, the chamfered portion on body 1 will act on the chamfered portion of snap ring 6, and snap ring 6 is inwardly shunk.Continue rotary nut 5, snap ring 6 just continues compression primary seal circle 8, and when being compressed to predetermined extent, the contractile force that snap ring 6 is subjected to makes the exocuticle of bayonet socket 7 incision aluminium-plastic composite pipes 2, thus the installation process of finishing.
Because the front end at aluminium-plastic composite pipe 2 has soft secondary seal ring 4, at this moment continue rotary nut 5 again, will make nut 5, snap ring 6, aluminium-plastic composite pipe 2 advances compression secondary seal ring 4 synchronously, in this process, has also compressed primary seal circle 8 simultaneously, make the compressibility of primary seal circle 8 higher, thereby just reached best sealing effect.
What deserves to be mentioned is, the snap ring 6 of pipe joint in the past all is circular, its stressed chucking mode all is in snap ring 6 by nut 5 positive force, the effect that this often can not obtain in actual applications, often all be because the cover implantation site of snap ring 6 is unbalanced, or nut 5 is unbalanced to the power of snap ring 6 in drive-in step, has caused snap ring 6 also not put in place with regard to too early stressed incision aluminium-plastic composite pipe 2, has caused the compressibility deficiency to primary seal circle 8.Here it is, and sealing effect is bad, causes the basic reason of leakage.And technology provided by the invention makes snap ring 6 be subjected to the reaction force of body 1, and more crucial is to allow the inclined-plane of snap ring 6 and the inclined-plane of body 1 match, and just makes application of force size, force application location, the compressibility of primary seal circle 8 has all been obtained quantification.When needs change application of force size, force application location, during to the compressibility of primary seal circle 8, the length and the gradient that also can change the inclined-plane realize.This is the embodiment of the invention just.
Claims (3)
1, a kind of pipe joint comprises body, and flexible pipe is arranged in body; External nut arranged at this, between nut and the body snap ring is arranged, the surface of contact of snap ring and flexible pipe is provided with bayonet socket; Be provided with the primary seal circle between snap ring and the body, it is characterized in that: the outer ring section shape of snap ring is the inclined-plane, and the section shape of the part that matches with the snap ring inclined-plane on the body is the inclined-plane.
2, pipe joint as claimed in claim 1 is characterized in that: support tube is arranged in flexible pipe, be with secondary seal ring on the support tube.
3, pipe joint as claimed in claim 1 or 2 is characterized in that: described flexible pipe is aluminium-plastic composite pipe or polyethylene pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00112902A CN1108478C (en) | 2000-04-28 | 2000-04-28 | Pipe connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00112902A CN1108478C (en) | 2000-04-28 | 2000-04-28 | Pipe connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1272604A CN1272604A (en) | 2000-11-08 |
| CN1108478C true CN1108478C (en) | 2003-05-14 |
Family
ID=4582725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00112902A Expired - Lifetime CN1108478C (en) | 2000-04-28 | 2000-04-28 | Pipe connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1108478C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104702A (en) * | 2012-11-15 | 2013-05-15 | 无锡市洪成造纸机械有限公司 | Connector for hydraulic machine plane sealing |
| CN115111447B (en) * | 2022-07-07 | 2024-09-20 | 亳州中知知识产权运营有限公司 | Mechanical buckle pipe fitting |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07167357A (en) * | 1993-12-13 | 1995-07-04 | Kawanishi Suido Kiki:Kk | Tube joint and rubber packing |
| CN2307979Y (en) * | 1997-08-13 | 1999-02-17 | 佛山市日丰企业有限公司 | Separation type pipeline joint |
| US5957509A (en) * | 1998-10-16 | 1999-09-28 | Komolrochanaporn; Naris | Pipe coupling |
-
2000
- 2000-04-28 CN CN00112902A patent/CN1108478C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07167357A (en) * | 1993-12-13 | 1995-07-04 | Kawanishi Suido Kiki:Kk | Tube joint and rubber packing |
| CN2307979Y (en) * | 1997-08-13 | 1999-02-17 | 佛山市日丰企业有限公司 | Separation type pipeline joint |
| US5957509A (en) * | 1998-10-16 | 1999-09-28 | Komolrochanaporn; Naris | Pipe coupling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1272604A (en) | 2000-11-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20030514 |
|
| CX01 | Expiry of patent term |