CN102777719A - Backflow-preventing pipe joint - Google Patents
Backflow-preventing pipe joint Download PDFInfo
- Publication number
- CN102777719A CN102777719A CN2012102396786A CN201210239678A CN102777719A CN 102777719 A CN102777719 A CN 102777719A CN 2012102396786 A CN2012102396786 A CN 2012102396786A CN 201210239678 A CN201210239678 A CN 201210239678A CN 102777719 A CN102777719 A CN 102777719A
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- China
- Prior art keywords
- spool
- outlet end
- pipe joint
- passage
- head
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Abstract
The invention relates to a backflow-preventing pipe joint, comprising a joint body (1), wherein the joint body (1) is provided with an inlet end (11), an outlet end (12) and at least one channel (A); a valve spool (2) is arranged inside the channel (A); a clamping ring (3) is arranged behind the tail (22) of the valve spool (2) inside the channel (A), and a spring (4) is tightly abutted between the tail (22) and the clamping ring (3); the head (21) of the valve spool (2) is provided with a conical external wall (21a); and the inner part of the valve spool (2) is provided with a flow hole (23), and a circle of convex ring (13) is arranged at the head (21) of the valve spool (2) on the internal wall of the channel (A). Compared with the prior art, the conical external wall of the valve spool in the pipe joint and the convex ring on the channel form a sealed structure, so that liquid at the outlet end does not flow to the inlet end via the flow hole of the valve spool, the liquid at the outlet end is prevented from back-flowing to the inlet end, and the function of a one-way valve is realized without an external one-way valve; and moreover, the peripheral size of the pipe joint is not increased and the pipe joint is conveniently installed in a narrow equipment space.
Description
Technical field
The present invention relates to a kind of pipe joint, relate in particular to the pipe joint of the anti-backflow of a kind of ability.
Background technique
The application of pipe joint in oil, liquid delivery line connect is very extensive, and be common like two pass joints, tee union, multiple-pass joint or the like.For preventing that refluxing from appearring in certain passage, on the specific inlet of pipe coupling, need one-way valve of independent installation, to realize the unidirectional purpose of opening circulation passage of control.Yet when concrete the application, because the equipment/system design size at pipe joint place itself is certain, the installing space that can offer pipe joint is very limited, particularly in the hydraulic system of the oil-way system of vehicle and precision.Thereby the existing this design demand that connects an one-way valve is in addition further improved.
Summary of the invention
Technical problem to be solved by this invention is the pipe joint that the anti-backflow of a kind of ability is provided to the existing technology present situation, itself has the function of one-way valve, and does not increase the Outside Dimensions of pipe joint, is easier to install and use.
The present invention solves the problems of the technologies described above the technological scheme that is adopted: this can prevent the pipe joint of backflow; Comprise joint body; Joint body is provided with an entrance point and at least one outlet end, forms at least one passage that connects joint body between entrance point and the outlet end, it is characterized in that:
In a described passage, being provided with one can be along the spacing mobile spool of this passage, and this spool comprises towards the head of entrance point with towards the afterbody of outlet end;
Be provided with a snap ring in the said passage, after being positioned at the afterbody of this spool, a spring is tight against between the afterbody of this spool and this snap ring;
The head of said spool has conical outer wall; Valve core inside has the opening of a connection conical outer wall and afterbody; And; The inwall of said passage, the head place that is positioned at this spool are provided with a circle bulge loop, and the head of said spool is stuck in this bulge loop central authorities because of the pretightening force of spring, and the opening of opening on conical outer wall just in time is positioned at this bulge loop that side near outlet end.
During technological practical application of the present invention, can pipe joint be designed to a tee union, at this moment, joint body is provided with two outlet end, form two passages between entrance point and two outlet end, and spool is arranged in one of them passage;
Also can pipe joint be designed to prevailing two pass joints, at this moment, an outlet end only be set on the joint body, joint body central authorities only have a circulation passage, and said spool just is arranged on wherein.
Preferably, the cross section of said opening is the Y type, to accelerate the velocity of liquid assets of oil, liquid.
Compared with prior art, the invention has the advantages that: through spool is set in circulation passage, and the pretightening force effect that bulge loop cooperates, afterbody receives spring in the head of spool and the passage and make spool have the trend that moves forward all the time; Cause the head of spool can be fastened on bulge loop central authorities; At this moment, formed enclosed construction between the conical outer wall of spool head and the bulge loop on the vias inner walls, the opening and the entrance point of spool sealed; So; The liquid that can not of outlet end flows to entrance point from the opening of spool, and the liquid return of having stopped outlet end can effectively be prevented backflow to entrance point.When reality is used, have the function pipe joint of one-way valve, need not external one-way valve, and do not increase the Outside Dimensions of pipe joint, be easily installed in the narrow and small device space, and simple in structure, be easy to production and processing.
Description of drawings
Fig. 1 is in the structural representation of reset mode for the embodiment of the invention one medi-spring.
Fig. 2 is in the structural representation of compressive state for the embodiment of the invention one medi-spring.
Fig. 3 is in the structural representation of reset mode for the embodiment of the invention two medi-springs.
Fig. 4 is in the structural representation of compressive state for the embodiment of the invention two medi-springs.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Embodiment one:
Like Fig. 1, shown in Figure 2, the pipe joint of the anti-backflow of ability of the present invention is two pass joints in the present embodiment; Comprise joint body 1; Joint body 1 is provided with an entrance point 11 and an outlet end 12, forms a passage A who connects joint body 1 between entrance point 11 and the outlet end 12
In a described passage A, being provided with one can be along the spacing mobile spool 2 of this passage A, and this spool 2 comprises towards the head 21 of entrance point 11 with towards the afterbody 22 of outlet end 12;
In the said passage A, be positioned at and be provided with a snap ring 3, one springs 4 behind the afterbody 22 of this spool 2 and be tight against between the afterbody 22 and this snap ring 3 of this spool 2;
The head 21 of said spool 2 has conical outer wall 21a; Spool 2 inside have the opening 23 of connection its conical outer wall 21a and afterbody 22; The cross section of this opening 23 is the Y type, and the inwall of said passage A, head 21 places that are positioned at this spool 2 are provided with a circle bulge loop 13;
When entrance point 11 does not have the liquid input; The head 21 of said spool 2 is stuck in this bulge loop 13 central authorities because of the pretightening force of spring 4; And the opening of opening 23 on conical outer wall 21a just in time is positioned at this bulge loop 13 that side near outlet end 12, at this moment, between the liquid of outlet end 12 is because of conical outer wall 21a and bulge loop 13, forms sealing and can not flow to entrance point 11; Stopped liquid return to the entrance point 11 of outlet end 12; Can effectively prevent backflow, realize that finally pipe joint itself has the function of one-way valve, referring to Fig. 1;
And when proper functioning, entrance point 11 have the liquid input; The head 21 of said spool 2 can be pushed and pressure spring 4, and the opening of opening 23 on conical outer wall 21a is exposed among the passage A, at this moment; Liquid just can pass through opening 23 and flow to outlet end 12 smoothly, referring to Fig. 2.
Embodiment two:
Like Fig. 3～shown in Figure 4 is embodiments of the invention two; Itself and embodiment's one distinctive points is: in the present embodiment; Pipe joint is a tee union, and just, said joint body 1 is provided with two outlet end 12; Form two passage A, B between entrance point 11 and two outlet end 12, and spool 2 is arranged among one of them passage A.
Claims (3)
1. can prevent the pipe joint of backflow for one kind; Comprise joint body (1); Joint body (1) is provided with an entrance point (11) and at least one outlet end (12), forms at least one passage (A) that connects joint body (1) between entrance point (11) and the outlet end (12), it is characterized in that:
In a described passage (A), being provided with one can be along the spacing mobile spool of this passage (A) (2), and this spool (2) comprises towards the head (21) of entrance point (11) with towards the afterbody (22) of outlet end (12);
Be provided with a snap ring (3) in the said passage (A), after being positioned at the afterbody (22) of this spool (2), a spring (4) is tight against between the afterbody (22) and this snap ring (3) of this spool (2);
The head (21) of said spool (2) has conical outer wall (21a); Spool (2) inside has the opening (23) of its conical outer wall of connection (21a) and afterbody (22); And; The inwall of said passage (A), the head (21) that is positioned at this spool (2) locate to be provided with a circle bulge loop (13); The head (21) of said spool (2) is stuck in this bulge loop (13) central authorities because of the pretightening force of spring (4), and the opening of opening (23) on conical outer wall (21a) just in time is positioned at this bulge loop (13) that side near outlet end (12).
2. the pipe joint of the anti-backflow of ability as claimed in claim 1; It is characterized in that: said joint body (1) is provided with two outlet end (12); Form two passages (A, B) between entrance point (11) and two outlet end (12), and spool (4) is arranged in one of them passage (A).
According to claim 1 or claim 2 can prevent the pipe joint of backflow, it is characterized in that: the cross section of said opening (23) is the Y type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102396786A CN102777719A (en) | 2012-07-11 | 2012-07-11 | Backflow-preventing pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102396786A CN102777719A (en) | 2012-07-11 | 2012-07-11 | Backflow-preventing pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102777719A true CN102777719A (en) | 2012-11-14 |
Family
ID=47122746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102396786A Pending CN102777719A (en) | 2012-07-11 | 2012-07-11 | Backflow-preventing pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102777719A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105797470A (en) * | 2016-05-13 | 2016-07-27 | 安庆市峰邦工业产品设计有限公司 | Water supply interruption and backflow prevention device for reverse-washing filter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2604237A1 (en) * | 1986-09-19 | 1988-03-25 | France Materiel Medical | System for connecting two liquid circuits and application to dialysis devices |
| US5080132A (en) * | 1989-04-06 | 1992-01-14 | Kent-Moore Corporation | Refrigeration equipment service apparatus with quick-disconnect couplings |
| JP2008232361A (en) * | 2007-03-22 | 2008-10-02 | Nitto Kohki Co Ltd | Pipe joint member for high pressure fluid |
| CN201206686Y (en) * | 2008-05-10 | 2009-03-11 | 周纪昌 | Conical rubber seal type male and female quick joint |
| CN201661794U (en) * | 2010-01-20 | 2010-12-01 | 林友根 | Unidirectional ventilation loose joint |
| CN202719308U (en) * | 2012-07-11 | 2013-02-06 | 宁波嘉诚液压有限公司 | Pipe joint capable of preventing backflow |
-
2012
- 2012-07-11 CN CN2012102396786A patent/CN102777719A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2604237A1 (en) * | 1986-09-19 | 1988-03-25 | France Materiel Medical | System for connecting two liquid circuits and application to dialysis devices |
| US5080132A (en) * | 1989-04-06 | 1992-01-14 | Kent-Moore Corporation | Refrigeration equipment service apparatus with quick-disconnect couplings |
| JP2008232361A (en) * | 2007-03-22 | 2008-10-02 | Nitto Kohki Co Ltd | Pipe joint member for high pressure fluid |
| CN201206686Y (en) * | 2008-05-10 | 2009-03-11 | 周纪昌 | Conical rubber seal type male and female quick joint |
| CN201661794U (en) * | 2010-01-20 | 2010-12-01 | 林友根 | Unidirectional ventilation loose joint |
| CN202719308U (en) * | 2012-07-11 | 2013-02-06 | 宁波嘉诚液压有限公司 | Pipe joint capable of preventing backflow |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105797470A (en) * | 2016-05-13 | 2016-07-27 | 安庆市峰邦工业产品设计有限公司 | Water supply interruption and backflow prevention device for reverse-washing filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121114 |