CN106051232A - One-way valve applicable to large-flow working range and working method thereof - Google Patents
One-way valve applicable to large-flow working range and working method thereof Download PDFInfo
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- CN106051232A CN106051232A CN201610546555.5A CN201610546555A CN106051232A CN 106051232 A CN106051232 A CN 106051232A CN 201610546555 A CN201610546555 A CN 201610546555A CN 106051232 A CN106051232 A CN 106051232A
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- auxiliary
- valve
- spring
- seat
- main
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention provides a one-way valve applicable to large-flow working range and a working method thereof. The one-way valve comprises a main valve core, a main spring, a sub valve core, a sub spring, a shell, a sub valve seat and a sub spring seat, wherein one end of the shell is an inlet; the other end of the shell is connected with one end of the sub valve seat; the other end of the sub valve seat is connected with the sub spring seat; the other end of the sub spring seat is an outlet; the main valve core is mounted in an inner cavity of the shell; one end of the main valve core is close to the inlet; the other end of the main valve core is connected with the main spring; the other end of the main spring is fixed to the outer end face of the sub valve seat; the sub valve core is mounted in an inner cavity of the sub valve seat; one end of the sub spring is fixed to the inner end face of the sub valve core; and the other end of the sub spring is fixed to the sub spring seat. According to the one-way valve, the stability problem of opening and closing of the valve under the situation of large flow change is solved, and the beneficial effects that the stable operation flow range is large, the opening pressure difference is low, the flow resistance is low, the sealing reliability is high, and the service life is long are achieved.
Description
Technical field
The present invention relates to a kind of check valve, be specifically related to check valve and the work thereof of a kind of steady operation under big range of flow
Make method, be used for controlling fluid media (medium) flowing direction.
Background technology
Check valve in the design process, often requires in the case of low reverse differential pressure that low unlatching pressure and low reverse leak rate refer to
Mark, but there is contradiction between these indexs, and especially in the case of big changes in flow rate, the unlatching stability of valve is again design difficulty
Point.Along with application demand is the harshest, it is desirable to check valve has bigger operating flow range, lower starting differential pressure and stream
Resistance, higher sealing reliability and longer working life.
At present, refering to domestic and foreign literature, do not find under low reverse differential pressure and big flow working range, both met low opening
Open pressure reduction and low flow resistance requirement, there is again such structure one-way valve of reliable reversely sealing.
Summary of the invention
For above-mentioned defect of the prior art, it is an object of the invention to provide and a kind of be applicable to big flow working range
Check valve and method of work thereof, solve existing check valve and open stability problem under big flow working condition, meet simultaneously
Low starting differential pressure, low flow resistance and the requirement of low reverse leak rate (under low reverse differential pressure).
For reaching above-mentioned purpose, the technical solution adopted in the present invention is as follows:
A kind of check valve being applicable to big flow working range, including: main valve plug, main spring, auxiliary valve core, auxiliary spring, shell
Body, auxiliary-seat and auxiliary spring seat；One end of described housing is import, and the other end is connected with one end of auxiliary-seat, auxiliary-seat
Other end is connected with auxiliary spring seat, and the other end of auxiliary spring seat is outlet；Described main valve plug is loaded on housing cavity, main valve plug
One end is connected with main spring near import, the other end；The other end of main spring is fixed on the outer face of auxiliary-seat；Described pair
Spool is loaded on auxiliary-seat inner chamber；The inner face of described auxiliary valve core is fixed in described auxiliary spring one end, and the other end is fixed on secondary bullet
Spring abutment.
Described main valve plug is designed to size two ends, and small end is for axially directed, and near import, big end is provided with damping hole, with
Main spring connects.
Further, described main valve plug arranges the main valve plug O sealed valve core as main valve plug, auxiliary valve core arranges pair
Spool O is as the sealed valve core of auxiliary valve core.
Further, the material of described main valve plug O auxiliary valve core O 4 is rubber.
Further, the sealing surface of described main valve plug and auxiliary valve core is designed to 90 ° of conical surfaces, described housing and the valve of auxiliary-seat
Seat is designed to the material of 90 ° of conical surface main valve plug O and auxiliary valve core O and is rubber.
Further, 90 ° of conical surfaces of described main core valve having the first dovetail groove, described main valve plug O is loaded on described
The first dovetail groove in；Having the second dovetail groove on 90 ° of conical surfaces of described auxiliary valve core, described auxiliary valve core O is loaded on described
In second dovetail groove.
A kind of method of work of the check valve being applicable to big flow working range, including:
Just during task, when check valve inlet reaches certain pressure, overcome the pretightning force of main spring, open main valve plug；
Along with inlet pressure raises further, overcoming the pretightning force of auxiliary spring, auxiliary valve core is opened, and medium is at valve internal stream
Logical, the corresponding flow resistance of generation acts on the radial section of the big end of main valve plug, and along with the rising of flow, flow resistance increases therewith,
Promoting main valve plug continuous axial movement, check valve is the most stably opened；
When system workflow amount tapers into, and the flow resistance of valve diminishes, flow resistance is down to be not enough to overcome main spring and secondary bullet
When making a concerted effort of spring, major and minor spool under spring force, the most reversely moves, and is finally reached reverse sealing effectiveness；
When check valve downstream, working medium pressure is gradually lowered, making a concerted effort of major and minor initial tension of spring and media pressure downstream
When acting on active force on major and minor valve core sealed cover less than upstream medium, now check valve starts again at work.
Compared with prior art, the invention have the advantages that
1, novel version
Main valve plug small end plays axially directed effect, and the big end of main valve plug is used for setting damping hole, and this structure is substantially reduced valve
Weight and structure length.Under meeting weight demands, not only increase opening force under low discharge, and realize low flow resistance under big flow
Requirement, effectively increases steady operation range of flow.Valve is provided with the dependent series redundancy of twice and seals structure, further simultaneously
Improve sealing reliability；
2, rubber o-ring seal style is used
Main valve plug and auxiliary valve core all use rubber o-ring to seal, and this seal style is not only substantially reduced major and minor spring
Pretightning force (can reduce VOP), and meets the reverse sealing under low initial tension of spring, successfully solves to open pressure
Power, reverse differential pressure be low and contradiction between leak rate index request height；
3, long-life measure is taked
The O channel away of main valve plug and auxiliary valve core is dovetail groove, and compared with rectangle groove, dovetail groove has anticreep
Function, can effectively prevent major and minor spool O from departing from after repeatedly action, be effectively improved the working life of check valve.
Accompanying drawing explanation
By the detailed description non-limiting example made with reference to the following drawings of reading, the further feature of the present invention,
Purpose and advantage will become more apparent upon:
Fig. 1 is the structural representation being applicable to big flow working range check valve that the embodiment of the present invention provides；
Fig. 2 be the embodiment of the present invention provide be applicable to big flow working range check valve open time sectional view.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following example will assist in the technology of this area
Personnel are further appreciated by the present invention, but limit the present invention the most in any form.It should be pointed out that, the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, it is also possible to make some changes and improvements.These broadly fall into the present invention
Protection domain.
Fig. 1 is the structural representation of a kind of big flow working range check valve one embodiment of the present invention, including: main valve plug O
Shape circle 1, main valve plug 2, main spring 3, auxiliary valve core O 4, auxiliary valve core 5, auxiliary spring 6, housing 7, auxiliary-seat 8 and auxiliary spring seat 9.
One end of housing 7 is working media import, and the other end of housing 7 is connected with auxiliary-seat 8, such as by the side of welding
Method connects, and auxiliary spring seat 9 is connected with the other end of auxiliary-seat 8, and such as by the way of welding, connecting welding connects；Auxiliary spring seat
9 is logical structure in both ends open, and bigger one end, surface is connected with auxiliary-seat 8, and auxiliary spring 6 is fixed on one end that surface is bigger,
The axis of the axis of auxiliary spring 6 and auxiliary spring seat 9 is on same straight line, and auxiliary spring seat 9 is working medium exit port.
Main valve plug 2 is loaded on housing 7 inner chamber, and main valve plug 2 small end play the guiding role, and big end is provided with damping hole；Main valve plug O
1 is loaded in the first dovetail groove of main valve plug 2, seals together with the formation of housing 7 conical surface；Main spring 3 provides for main valve plug 2 and seals in advance
Clamp force and restoring force；Auxiliary valve core 5 is loaded on auxiliary-seat 8 inner chamber, and auxiliary valve core O 4 is loaded in the second dovetail groove of auxiliary valve core 5, with
Auxiliary-seat 8 conical surface forms another road and seals；Auxiliary spring 6 provides seal preload and restoring force for auxiliary valve core 5.
Below, the work process of the big flow working range check valve that the present invention provides is described.
Fig. 2 is the big flow working range check valve that provides of present invention sectional view when opening.
Just during task, when check valve inlet reaches certain pressure, overcome the pretightning force of main spring 3, open main valve plug 2,
Along with inlet pressure raises further, overcoming the pretightning force of auxiliary spring 6, auxiliary valve core 5 to open, medium circulates at valve internal, produces
Raw corresponding flow resistance acts on the radial section that main valve plug 2 is held greatly, and along with the rising of flow, flow resistance increases therewith, promotes
Main valve plug 2 continuous axial movement, check valve is the most stably opened.
When system workflow amount tapers into, and the flow resistance of valve diminishes, flow resistance is down to be not enough to overcome main spring 3 and secondary bullet
When making a concerted effort of spring 6, major and minor spool under spring force, the most reversely moves, and is finally reached reverse sealing effectiveness.
When check valve downstream, working medium pressure is gradually lowered, making a concerted effort of major and minor initial tension of spring and media pressure downstream
When acting on active force on major and minor valve core sealed cover less than upstream medium, now check valve starts again at work.
From the above mentioned, check valve main valve plug is designed to the structure of big small end and adds opening force under low discharge, it is achieved flow greatly
Low flow resistance requirement under amount, effectively increases steady operation range of flow；Major and minor spool all uses rubber o-ring to seal, significantly
Reducing major and minor initial tension of spring, can meet again the reverse sealing in the case of low initial tension of spring, twice mutually link simultaneously
Series redundancy seals structure and improves sealing reliability further；Major and minor spool O groove is both designed as dovetail groove, improves single
To valve working life.
To sum up, the present invention obtains that steady operation range of flow is big, starting differential pressure is low, flow resistance is low, sealing reliability is high and the longevity
The beneficial effect that life is long.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make a variety of changes within the scope of the claims or revise, this not shadow
Ring the flesh and blood of the present invention.In the case of not conflicting, the feature in embodiments herein and embodiment can any phase
Combination mutually.
Claims (7)
1. the check valve being applicable to big flow working range, it is characterised in that including: main valve plug (2), main spring (3), pair
Spool (5), auxiliary spring (6), housing (7), auxiliary-seat (8) and auxiliary spring seat (9), one end of described housing (7) is import, another
End is connected with one end of auxiliary-seat (8), and the other end of auxiliary-seat (8) is connected with auxiliary spring seat (9), auxiliary spring seat (9) another
One end is outlet；Described main valve plug (2) is loaded on housing (7) inner chamber, and main valve plug (2) one end is near import, the other end and main spring
(3) connect；The other end of main spring (3) is fixed on the outer face of auxiliary-seat (8)；Described auxiliary valve core (5) is loaded on auxiliary-seat (8)
Inner chamber；The inner face of described auxiliary valve core (5) is fixed in described auxiliary spring (6) one end, and the other end is fixed on auxiliary spring seat (9).
The check valve being applicable to big flow working range the most according to claim 1, it is characterised in that described main valve plug
(2) being designed to the structure at size two ends, small end is for axially directed, and near import, big end is provided with damping hole, with main spring (3)
Connect.
The check valve being applicable to big flow working range the most according to claim 1, it is characterised in that described main valve plug
(2) main valve plug O (1) is set on, as the sealed valve core of main valve plug (2), described auxiliary valve core (5) arranges auxiliary valve core O shape
Circle (4), as the sealed valve core of auxiliary valve core (5).
The check valve being applicable to big flow working range the most according to claim 3, it is characterised in that described main valve plug O
The material of shape circle (1) and auxiliary valve core O (4) is rubber.
The check valve being applicable to big flow working range the most according to claim 3, it is characterised in that described main valve plug
(2) and the sealing surface of auxiliary valve core (5) is designed to 90 ° of conical surfaces, the valve seat of described housing (7) and auxiliary-seat (8) is designed to 90 °
The conical surface.
The check valve being applicable to big flow working range the most according to claim 5, it is characterised in that described main core valve
(2) having the first dovetail groove on 90 ° of conical surfaces, described main valve plug O (1) is loaded in the first described dovetail groove；Described pair
Having the second dovetail groove on 90 ° of conical surfaces of spool (5), described auxiliary valve core O (4) is loaded in described second dovetail groove.
The method of work of the check valve being applicable to big flow working range the most according to claim 1, it is characterised in that
Just during task, when check valve inlet reaches certain pressure, overcome the pretightning force of main spring (3), open main valve plug (2)；
Along with inlet pressure raises further, overcoming the pretightning force of auxiliary spring (6), auxiliary valve core (5) to open, medium is at valve internal
Circulation, the corresponding flow resistance of generation acts on the radial section of main valve plug (2) end greatly, and along with the rising of flow, flow resistance is therewith
Increasing, promote main valve plug (2) continuous axial movement, check valve is the most stably opened；
When system workflow amount tapers into, and the flow resistance of valve diminishes, flow resistance is down to be not enough to overcome main spring (3) and auxiliary spring
(6) make a concerted effort time, major and minor spool under spring force, the most reversely moves, and is finally reached reverse sealing effectiveness；
When check valve downstream, working medium pressure is gradually lowered, and is less than major and minor initial tension of spring and media pressure downstream with joint efforts
When upstream medium acts on active force on major and minor valve core sealed cover, now check valve starts again at work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610546555.5A CN106051232B (en) | 2016-07-12 | 2016-07-12 | A kind of check valve and its working method suitable for big flow working range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610546555.5A CN106051232B (en) | 2016-07-12 | 2016-07-12 | A kind of check valve and its working method suitable for big flow working range |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106051232A true CN106051232A (en) | 2016-10-26 |
| CN106051232B CN106051232B (en) | 2018-08-24 |
Family
ID=57185354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610546555.5A Active CN106051232B (en) | 2016-07-12 | 2016-07-12 | A kind of check valve and its working method suitable for big flow working range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106051232B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911677A (en) * | 2020-07-31 | 2020-11-10 | 温州职业技术学院 | Magnetic control constant pressure valve |
| CN113915531A (en) * | 2021-11-04 | 2022-01-11 | 合肥市久环给排水燃气设备有限公司 | Gas odorization device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1279370A (en) * | 1999-06-29 | 2001-01-10 | 兼工业株式会社 | Counterflow stopper |
| EP1830009A1 (en) * | 2006-03-01 | 2007-09-05 | Rain Bird Corporation | Backflow prevention device |
| CN100547179C (en) * | 2003-03-14 | 2009-10-07 | 阿尔弗莱德凯歇尔有限公司及两合公司 | Flap valve |
| CN201651452U (en) * | 2010-04-27 | 2010-11-24 | 宁波华成阀门有限公司 | Two-stage check valve |
| CN202992283U (en) * | 2012-12-08 | 2013-06-12 | 中国航天科技集团公司第六研究院第十一研究所 | Tandem double-valve-plug one-way valve for high pressure and redundancy sealing |
-
2016
- 2016-07-12 CN CN201610546555.5A patent/CN106051232B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1279370A (en) * | 1999-06-29 | 2001-01-10 | 兼工业株式会社 | Counterflow stopper |
| CN100547179C (en) * | 2003-03-14 | 2009-10-07 | 阿尔弗莱德凯歇尔有限公司及两合公司 | Flap valve |
| EP1830009A1 (en) * | 2006-03-01 | 2007-09-05 | Rain Bird Corporation | Backflow prevention device |
| CN201651452U (en) * | 2010-04-27 | 2010-11-24 | 宁波华成阀门有限公司 | Two-stage check valve |
| CN202992283U (en) * | 2012-12-08 | 2013-06-12 | 中国航天科技集团公司第六研究院第十一研究所 | Tandem double-valve-plug one-way valve for high pressure and redundancy sealing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911677A (en) * | 2020-07-31 | 2020-11-10 | 温州职业技术学院 | Magnetic control constant pressure valve |
| CN111911677B (en) * | 2020-07-31 | 2021-06-25 | 温州职业技术学院 | Magnetic control constant pressure valve |
| CN113915531A (en) * | 2021-11-04 | 2022-01-11 | 合肥市久环给排水燃气设备有限公司 | Gas odorization device |
| CN113915531B (en) * | 2021-11-04 | 2024-01-30 | 合肥市久环给排水燃气设备有限公司 | Gas odorizing device |
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| Publication number | Publication date |
|---|---|
| CN106051232B (en) | 2018-08-24 |
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