CN106594332B - The anti-down flow check valve of pressure-reducing - Google Patents
The anti-down flow check valve of pressure-reducing Download PDFInfo
- Publication number
- CN106594332B CN106594332B CN201710066180.7A CN201710066180A CN106594332B CN 106594332 B CN106594332 B CN 106594332B CN 201710066180 A CN201710066180 A CN 201710066180A CN 106594332 B CN106594332 B CN 106594332B
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- China
- Prior art keywords
- rocking bar
- flap
- valve seat
- torsion spring
- pressure
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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
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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
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
- F16K15/033—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member spring-loaded
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a kind of anti-down flow check valves of pressure-reducing, including valve seat, flap, rocking bar, torsion spring；The side of flap is hinged on the upper end of valve seat, and the other side is equipped with idler wheel；Rocking bar one end is fixing end, and the other end is free end, and rocking bar fixing end is connected to the lower end of valve seat by pin shaft；Idler wheel is connected on rocking bar, and is slided between rocking bar fixing end and rocking bar free end；There are two limit hooks for the lower end setting of valve seat；Torsion spring is set on pin shaft, and torsion spring is symmetrically arranged in the two sides of rocking bar, and the intermediate torque arm of torsion spring is limited by rocking bar, and the torque arm of two stretchings in left and right of torsion spring links up with limit by the limit of valve seat lower end；The spring-force driven dual of torsion spring rolls the idler wheel on flap on rocking bar by external force, realizes the unlatching of flap in making flap be in normally off on rocking bar.Due to the structure of torsion spring and rocking bar, reaching the check-valves more preferably prevents from flowing backwards effect.
Description
Technical field
The present invention relates to pipeline valve technical fields, more specifically to a kind of anti-down flow check valve of pressure-reducing.
Background technique
Backflow preventer prevents the liquid refluence of flow direction from causing backflow pollution for pipelines such as sewage treatments.Refluence prevents
Check-valves and a safe drain valve that device is separated by two form a valving being composed.Existing check-valves
Structure is excessively simple, fairly obvious to the resistance of water flow.Check-valves increases the resistance of water flow with the aperture of flap and linearly increases
Greatly, and when each pressure chamber of backflow preventer generates smaller pressure oscillation, safe drain valve frequently sluices.
In addition, the valve seat of existing country's check-valves is substantially the fixation using metal material, between components and components
Connection type must use traditional mechanical connection, such as be threadedly coupled, and must drill tapping at valve seat, then each components are passed through
Threaded connection is fixedly mounted in valve seat, time-consuming consumption material.And check-valves is in opening-closing process, between each components and valve seat
It shakes repeatedly, component is easy to appear loosening.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, it is anti-down to provide a kind of pressure-reducing
Flow check valve, the check-valves are reciprocatingly slided on rocking bar using the idler wheel being arranged on flap, and pass through torsion spring and rocking bar phase
The structure of interaction, flap is in opening process, and torsion spring spring force is opened with flap to be increased and increase, and idler wheel rolls on rocking bar
Dynamic, the position of idler wheel and rocking bar constantly changes, and the acting force arm of flap and rocking bar constantly increases, and makes rocking bar to the anti-work of flap
Firmly constantly reduce.Check-valves in off position position when, the acting force arm of rocking bar and flap is minimum, and rocking bar is to flap reaction
Power is larger, ensure that flap and valve base sealing；For check-valves at full-gear position, the acting force arm of rocking bar and flap is maximum,
Rocking bar is smaller to flap reaction force, relatively low resistance of the check-valves to water flow.
The technical solution adopted by the present invention to solve the technical problems is：A kind of anti-down flow check valve of pressure-reducing is provided, is wrapped
Include valve seat, flap, rocking bar, torsion spring；The side of the flap is hinged on the upper end of valve seat, and the other side is equipped with idler wheel；It is described
Rocking bar one end is fixing end, and the other end is free end, and rocking bar fixing end is connected to the lower end of valve seat by pin shaft；The idler wheel supports
It is connected on rocking bar, and slided between rocking bar fixing end and rocking bar free end；There are two limits to hang for the lower end setting of the valve seat
Hook；The torsion spring is set on the pin shaft, and torsion spring is symmetrically arranged in the two sides of rocking bar, the intermediate torque arm of torsion spring
It is limited by rocking bar, the torque arm of two stretchings in left and right of torsion spring links up with limit by the limit of valve seat lower end；The spring force of torsion spring
Acting on rocking bar makes flap be in normally off, rolls the idler wheel on flap on rocking bar by external force, realizes flap
It opens.
Preferably, the anti-down flow check valve of the pressure-reducing, the rocking bar free end are equipped with back hook portion.
Preferably, the pressure-reducing anti-down flow check valve offers button hole on the rocking bar free end.
Preferably, the anti-down flow check valve of the pressure-reducing, the side that the flap is equipped with idler wheel are equipped with for limiting
The movable limiting groove in rocking bar back hook portion.
Preferably, the anti-down flow check valve of the pressure-reducing, the valve seat are plastic part, and the limit hook is metal
Part, the limit hook are integrally formed using plastic insert technology and valve seat.
Preferably, the anti-down flow check valve of the pressure-reducing, there are two the branch for fixing flap for setting on the valve seat
Piece, the flap is by being pivotally secured between two branch pieces；The valve seat is plastic part, and the branch piece is metalwork, described
Branch piece is integrally formed using plastic insert technology and valve seat.
Preferably, the anti-down flow check valve of the pressure-reducing, there are two for fixing check-valves for setting on the valve seat
Nut, the valve seat be plastic part, the nut be metalwork, the nut using plastic insert technology and valve seat one at
Type.
Preferably, the anti-down flow check valve of the pressure-reducing, the flap are equipped with sheet rubber and pressing plate, the sheet rubber
It is fixed on flap by the bolt on pressing plate.
Implement the anti-down flow check valve of pressure-reducing of the invention, has the advantages that：
(1) structure is opened in different rotation, increases check-valves the resistance of water flow with the aperture of flap and constantly reduces, reaches
It prevents from flowing backwards effect to more preferable：Due to the structure of torsion spring, rocking bar and idler wheel interaction, flap is in opening process, double torsions
Spring spring force increases with flap aperture and is increased, and idler wheel rolls on rocking bar, and the position of idler wheel and rocking bar constantly changes, flap
Constantly increase with the acting force arm of rocking bar, reduces rocking bar constantly to the reaction force of flap.Check-valves position in off position
When, the acting force arm of rocking bar and flap is minimum, and rocking bar is larger to flap reaction force, ensure that flap and valve base sealing；Non-return
For valve at full-gear position, the acting force arm of rocking bar and flap is maximum, and rocking bar is smaller to flap reaction force, relatively low
Resistance of the check-valves to water flow.
(2) convenient online replacement component and cleaning：When carrying out cleaning and part replacement to check-valves, since torsion spring is made
Active force for rocking bar is very big, and operator directly can not be pried open rocking bar with hand.Therefore by the rocking bar free end
The button hole of rocking bar can be inserted on a prominent position, then have an effect clockwise to valve seat, by rocking bar by the button hole opened up, operator
It pries open, then the back hook portion of rocking bar is stuck in the limiting groove of idler wheel and flap, so that flap is in normally open, facilitate components
Cleaning and replacement.
(3) plastic insert technology is used：Plastic seat and metal branch piece, metal hanger and metal nuts use plastic insert
Technology one-pass molding is not needed using being bolted or other mechanical systems are fixedly mounted on each components on valve seat, and
Install very secured, the valve seat for solving the existing country is substantially fixation using metal material, between components and components
The problem of connection type time-consuming consumption material；And solves check-valves in opening-closing process, between each components and valve seat repeatedly
The problem of vibration, component is easy to appear loosening.
(4) torsion spring of check-valves is easily installed：The spring part installation of traditional check valve structure is very complicated, the present invention
Two limits by the way that valve seat lower end is arranged in are linked up with, it is only necessary to torsion spring is inserted on pin shaft, then respectively will with screwdriver
The torque arm of torsion spring or so two stretchings is prized to the limit of corresponding limit hook above, which facilitates the installation of spring
Disassembly.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 is the structural schematic diagram of the pressure-reducing anti-backflow closure of check ring state of present pre-ferred embodiments；
Fig. 2 is the structural schematic diagram of the semi-open state of the anti-down flow check valve of pressure-reducing of present pre-ferred embodiments；
Fig. 3 is the structural schematic diagram of the anti-down flow check valve maximum opening of pressure-reducing of present pre-ferred embodiments；
Fig. 4 is the enlarged diagram in the region a in Fig. 3；
Fig. 5 is the enlarged diagram in the region b in Fig. 3；
Fig. 6 is that the anti-down flow check valve of pressure-reducing of present pre-ferred embodiments opens the structural schematic diagram of limiting condition；
Fig. 7 is the operating process schematic diagram of the anti-down flow check valve cleaning replacement component of pressure-reducing of the invention；
Fig. 8 is the structural schematic diagram of another angle of the anti-down flow check valve of pressure-reducing of present pre-ferred embodiments；
Wherein, 1, valve seat；2, flap；201, limiting groove；3, rocking bar；301, back hook portion；302, button hole；4, torsion spring；
5, idler wheel；6, pin shaft；7, limit hook；8, branch piece；9, nut；10, sheet rubber；11, pressing plate；A, prominent position；B, valve body.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the present invention：
As shown in figures 1-8, the anti-down flow check valve of a kind of pressure-reducing, including valve seat 1, flap 2, rocking bar 3, torsion spring 4；It is described
The side of flap is hinged on the upper end of valve seat, and the other side of flap is equipped with idler wheel 5；Described rocking bar one end is fixing end, another
End is free end, and rocking bar fixing end is connected to the lower end of valve seat by pin shaft 6；The idler wheel is connected on rocking bar, and in rocking bar
It is slided between fixing end and rocking bar free end；There are two limit hooks 7 for the lower end setting of the valve seat；The torsion spring is set in
On the pin shaft, torsion spring is symmetrically arranged in the two sides of rocking bar, and the intermediate torque arm of torsion spring is limited by rocking bar, torsion spring
The torque arm of two stretchings in left and right links up with limit by the limit of valve seat lower end；The spring-force driven dual of torsion spring on rocking bar in making at flap
In normally off, the idler wheel on flap is rolled on rocking bar by external force, realizes the unlatching of flap.
Preferably, the rocking bar free end is equipped with back hook portion 301.When flap is opened to extreme position, which is used
It in clamping idler wheel, open flap can not further, play superior position-limiting action.
As shown in Fig. 1-3,6, when flap in off position when, the spring-force driven dual of torsion spring makes flap on rocking bar
Idler wheel is pressed on rocking bar, at this point, the acting force arm of rocking bar and flap is minimum, when guaranteeing flap in off position, valve seat and valve
There are enough sealing forces between valve；When water flow increases, the open degree of flap constantly increases, and fixes the idler wheel on flap from rocking bar
It holds and slides to rocking bar free end, the contact point of rocking bar and idler wheel increases with the open degree of flap and constantly changes, and rocking bar makees flap
Firmly the arm of force constantly increases, so that flap, in opening process, flap constantly reduces the resistance of water flow；When flap is opened to pole
When extreme position, the back hook portion clamping idler wheel of rocking bar open flap can not further.
First advantage of check-valves of the invention is that structure is opened in different rotation, makes the resistance to water flow with flap
Aperture increases and constantly reduces, and reaching more preferably prevents from flowing backwards effect：On the one hand, due to the knot of torsion spring and rocking bar interaction
Structure has enough sealing forces when guaranteeing flap in off position between valve seat and flap.In the opening process of flap, non-return
Valve increases the resistance of water flow with the aperture of flap and constantly reduces.On the other hand, regardless of increasing or reducing, the non-return in water flow
The idler wheel of valve is slided along the length direction of rocking bar, and rocking bar plays certain guiding role, so that the unlatching of flap is more steady.
The second advantage of check-valves of the invention is convenient online replacement component and cleaning：
Preferably, button hole 302 is offered on the rocking bar free end；The side that the flap is equipped with idler wheel, which is equipped with, to be used for
Limit the movable limiting groove 201 in rocking bar back hook portion.When carrying out cleaning and part replacement to check-valves, since torsion spring acts on
Very big in the active force of rocking bar, operator directly can not be pried open rocking bar with hand.Therefore by being opened on the rocking bar free end
If button hole, as shown in fig. 7, the button hole of rocking bar can be inserted on a prominent position by operator, (protrusion position A be can be set
On valve B, also can be set on position easy to clean), it then has an effect clockwise to valve seat, rocking bar is pried open, then will shake
The back hook portion of bar is stuck in the limiting groove of idler wheel and flap, and flap is made to be in normally open, facilitates the cleaning and more of components
It changes.In addition, the flap is equipped with sheet rubber 10 and pressing plate 11, the sheet rubber is fixed on flap by the bolt on pressing plate
On.The sheet rubber of check-valves is typically all to be prone to wear part, worker to it with changing when, the bolt on pressing plate is directly turned on, to rubber
Film is replaced.
As shown in figure 5, the valve seat is plastic part, the limit hook 7 is metalwork, and the limit hook uses plastics
Inserts technology and valve seat are integrally formed.As shown in figure 4, be arranged on the valve seat there are two the branch piece 8 for fixing flap, it is described
Flap is by being pivotally secured between two branch pieces；The valve seat is plastic part, and the branch piece is metalwork, and the branch piece uses
Plastic insert technology and valve seat are integrally formed.For fixing the nut 9 of check-valves, the valve seat there are two being arranged on the valve seat
For plastic part, the nut is metalwork, and the nut is integrally formed using plastic insert technology and valve seat.The present invention is using modeling
Material inserts technology is processing technology well known in the prior art, applied to obtaining preferable effect in check-valves of the invention.
The third advantage of check-valves of the invention is that plastic seat is adopted with metal branch piece, metal hanger and metal nuts
With plastic insert technology one-pass molding, do not need using being bolted or other mechanical systems make each components be fixedly mounted on valve
On seat, and install very secured, the valve seat for solving existing country is substantially using metal material, components and components it
Between the problem of being fixedly connected with mode time-consuming consumption material；And solves check-valves in opening-closing process, each components and valve seat
Between shake repeatedly, the problem of component is easy to appear loosening.
4th advantage of check-valves of the invention is that the torsion spring of check-valves is easily installed, traditional check valve structure
Spring part installation it is very complicated, the present invention pass through be arranged in valve seat lower end two limits link up with 7, as shown in Figure 8, it is only necessary to
Torsion spring is inserted on pin shaft, then the torque arm that torsion spring or so two are stretched out is prized to corresponding limit respectively with screwdriver and is hung
Hook limit is upper, which facilitates the installing and dismounting of spring.
It will be apparent to those skilled in the art that can make various other according to the above description of the technical scheme and ideas
Corresponding change and deformation, and all these changes and deformation all should belong to the protection scope of the claims in the present invention
Within.
Claims (8)
1. the anti-down flow check valve of pressure-reducing, which is characterized in that including valve seat, flap, rocking bar, torsion spring；The side of the flap
It is hinged on the upper end of valve seat, the other side is equipped with idler wheel；Described rocking bar one end is fixing end, and the other end is free end, and rocking bar is solid
Fixed end is connected to the lower end of valve seat by pin shaft；The idler wheel is connected on rocking bar, and in rocking bar fixing end and rocking bar free end
Between slide；There are two limit hooks for the lower end setting of the valve seat；The torsion spring is set on the pin shaft, and torsion spring is left
The right side is arranged symmetrically in the two sides of rocking bar, and the intermediate torque arm of torsion spring is limited by rocking bar, the torque arm of two stretchings in left and right of torsion spring
Limit is linked up with by the limit of valve seat lower end；The spring-force driven dual of torsion spring is in making flap be in normally off on rocking bar, by outer
Power rolls the idler wheel on flap on rocking bar, realizes the unlatching of flap.
2. the anti-down flow check valve of pressure-reducing according to claim 1, which is characterized in that the rocking bar free end is equipped with back hook
Portion.
3. the anti-down flow check valve of pressure-reducing according to claim 1 or 2, which is characterized in that opened on the rocking bar free end
Equipped with button hole.
4. the anti-down flow check valve of pressure-reducing according to claim 2, which is characterized in that the flap is equipped with the one of idler wheel
Side is equipped with for limiting the movable limiting groove in rocking bar back hook portion.
5. the anti-down flow check valve of pressure-reducing according to claim 1, which is characterized in that the valve seat is plastic part, described
Limit hook is metalwork, and the limit hook is integrally formed using plastic insert technology and valve seat.
6. the anti-down flow check valve of pressure-reducing according to claim 1, which is characterized in that there are two use for setting on the valve seat
In the branch piece of fixed flap, the flap is by being pivotally secured between two branch pieces；The valve seat is plastic part, the branch piece
For metalwork, the branch piece is integrally formed using plastic insert technology and valve seat.
7. the anti-down flow check valve of pressure-reducing according to claim 1, which is characterized in that there are two use for setting on the valve seat
In the nut of fixed check-valves, the valve seat is plastic part, and the nut is metalwork, and the nut uses plastic insert technology
It is integrally formed with valve seat.
8. the anti-down flow check valve of pressure-reducing according to claim 1, which is characterized in that the flap be equipped with sheet rubber and
Pressing plate, the sheet rubber are fixed on flap by the bolt on pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710066180.7A CN106594332B (en) | 2017-02-06 | 2017-02-06 | The anti-down flow check valve of pressure-reducing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710066180.7A CN106594332B (en) | 2017-02-06 | 2017-02-06 | The anti-down flow check valve of pressure-reducing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106594332A CN106594332A (en) | 2017-04-26 |
| CN106594332B true CN106594332B (en) | 2018-11-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710066180.7A Active CN106594332B (en) | 2017-02-06 | 2017-02-06 | The anti-down flow check valve of pressure-reducing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106594332B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541816A (en) * | 2019-09-23 | 2019-12-06 | 睿控节能技术服务(深圳)有限公司 | Butterfly bivalve check valve reverse resistance device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MXPA04000169A (en) * | 2001-06-20 | 2005-06-06 | Watts Ind | Check valve having variable opening-force threshold. |
| EP2476937A1 (en) * | 2011-01-12 | 2012-07-18 | PRAHER Kunststofftechnik GmbH | Non-return flap |
| CN104246161A (en) * | 2012-02-23 | 2014-12-24 | 双叶产业株式会社 | Valve device for exhaust gas flow path |
| CN206563106U (en) * | 2017-02-06 | 2017-10-17 | 广东永泉阀门科技有限公司 | The anti-down flow check valve of pressure-reducing |
-
2017
- 2017-02-06 CN CN201710066180.7A patent/CN106594332B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MXPA04000169A (en) * | 2001-06-20 | 2005-06-06 | Watts Ind | Check valve having variable opening-force threshold. |
| EP2476937A1 (en) * | 2011-01-12 | 2012-07-18 | PRAHER Kunststofftechnik GmbH | Non-return flap |
| CN104246161A (en) * | 2012-02-23 | 2014-12-24 | 双叶产业株式会社 | Valve device for exhaust gas flow path |
| CN206563106U (en) * | 2017-02-06 | 2017-10-17 | 广东永泉阀门科技有限公司 | The anti-down flow check valve of pressure-reducing |
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| Publication number | Publication date |
|---|---|
| CN106594332A (en) | 2017-04-26 |
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