CN106594331B - The plate check valve reliably sealed - Google Patents
The plate check valve reliably sealed Download PDFInfo
- Publication number
- CN106594331B CN106594331B CN201710035806.8A CN201710035806A CN106594331B CN 106594331 B CN106594331 B CN 106594331B CN 201710035806 A CN201710035806 A CN 201710035806A CN 106594331 B CN106594331 B CN 106594331B
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- valve
- plate
- valve seat
- bearing pin
- support base
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The present invention provides a kind of plate check valve reliably sealed, including valve seat, valve seat is provided with multiple runners, and the position relative with valve seat is provided with support base, multiple valve plates for forming sealing with runner are connected with bearing pin, and bearing pin and support base are can be connected rotatably and in a manner of opposite valve seat shift reciprocately.It is rotatable by using bearing pin and support base and can opposite valve seat shift reciprocately connected mode, enable valve plate and axis shift of the valve seat along valve seat, so as under pressure, valve plate is capable of uniform force with valve seat sealing ring reliable contacts, realizes more preferably sealing effectiveness.Using the present invention, on the premise of ensuring that fluid media (medium) has larger overflow section, there is good sealing effectiveness, additionally it is possible to prevent toxic gas from overflowing.
Description
Technical field
The present invention relates to oil extraction part field, particularly a kind of plate check valve reliably sealed.
Background technology
The structure of existing plate check valve realizes the closure of runner by a valve plate as shown in Fig. 8,9, realizes resistance
The refluence of fluid stopping body, check-valves generally control the unlatching of valve plate and closing by the flow direction flowed, plate check valve it is excellent
Point is that area of passage is big.
Such as the A of Chinese patent literature CN 102985733 describe a kind of dual plate check valve, stop pin assemblies are located at
Wherein, it can prevent flap valve from moving past precalculated position.In a preferred embodiment, check-valves has two flap valves and positioned at two
Stop pin assemblies between individual flap valve, any one to prevent in two flap valves are pivoted beyond substantially vertical position.Stop
Pin assemblies are configured to the stop pin assemblies when check-valves is inserted into and forms check-valves in valve body and are inserted into and lock in place.Although
The stop pin assemblies being inserted into may include single component, and stop pin assemblies can include three parts, and these parts include center
Part and the first and second end sections.Stop pin assemblies are inserted between two fixtures, and are stopped in a preferred embodiment
Dynamic pin assemblies can be rotated to latched position, and in the latched position, it is secured in position by fastener.But due to using this valve
The structure of plate rotation, as shown in Figure 9, close to the position of rotating pin, the spacing between valve plate and valve seat is unadjustable
, with the abrasion of sealing ring, the sealing effectiveness at this is progressively deteriorated, therefore the sealing effectiveness between valve plate and valve seat is one
More scabrous technical problem, therefore will not generally be applied to the non-return occasion of gaseous fluid.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of plate check valve reliably sealed, can preferably realize
Sealing between valve plate and valve seat.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of plate check valve reliably sealed,
Including valve seat, valve seat is provided with multiple runners, and the position relative with valve seat is provided with support base, for forming the more of sealing with runner
Individual valve plate is connected with bearing pin, and valve plate and support base are by rotatable and can be connected in a manner of opposite valve seat shift reciprocately.
In preferable scheme, valve plate is fixedly connected with the connecting rod, and connecting rod is pivotally connected with bearing pin, and bearing pin and at least two slides
Bearing pin is fixedly connected, and slidiing pin is slidably connected with guide pin bushing, and guide pin bushing is fixedly connected with support base.
In preferable scheme, the diameter parallel of slidiing pin and valve seat.
In preferable scheme, the axis of bearing pin and the axis of slidiing pin are orthogonal on a perspective plane.
In preferable scheme, the torsion spring being socketed on bearing pin is additionally provided with, one end of torsion spring is hooked in connecting rod, other end quilt
The supporting plate of support base is spacing.
In another preferable scheme, the torsion spring being socketed on bearing pin is additionally provided with, one end of torsion spring hooks in connecting rod, led
The upper end of set is provided with the torsion spring positioning seat extended to valve plate outer wall direction, and the other end of torsion spring is spacing by torsion spring positioning seat.
In further preferred scheme, being additionally provided with guide pin bushing makes slidiing pin be additionally provided with close to the secondary spring of valve seat
The stopping means for preventing slidiing pin from deviating from.
In preferable scheme, valve plate is fixedly connected with the connecting rod, and connecting rod is pivotally connected with bearing pin, in the supporting plate of support base
The seat board with slotted hole provided with two, bearing pin are arranged in seat board.
In preferable scheme, valve seat is fixedly connected by branch sleeve with upper valve body, and upper valve body passes through screw thread and lower valve body
It is fixedly connected；
Support base is fixedly connected by installation sleeve with lower valve body, and valve seat is provided with two runners, and the end face of runner is provided with
The sealing ring of annular.
In preferable scheme, lower valve body is provided with expanding valve pocket, and support base and valve plate are installed in valve pocket.
A kind of plate check valve reliably sealed provided by the invention, it is rotatable by using bearing pin and support base and can phase
To the connected mode of valve seat shift reciprocately, enable valve plate and axis shift of the valve seat along valve seat, so that under pressure,
Valve plate is capable of uniform force with valve seat sealing ring reliable contacts, realizes more preferably sealing effectiveness.Using the present invention, ensuring
On the premise of fluid media (medium) has larger overflow section, there is good sealing effectiveness, additionally it is possible to prevent toxic gas from overflowing.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the elevational schematic view of valve seat in the present invention.
Fig. 3 is structural representation when valve seat seals with valve plate in the present invention.
Fig. 4 is structural representation when valve seat is opened with valve plate in the present invention.
Fig. 5 is the close-up schematic view at A in Fig. 3.
Fig. 6 is Fig. 4 left view.
Fig. 7 is another optional structural representation in the present invention.
Fig. 8 is structural representation of the prior art.
Fig. 9 is close-up schematic view at B in Fig. 8.
In figure：Upper valve body 1, lower valve body 2, valve seat 3, first flow 31, second flow channel 32, branch sleeve 33, sealing ring 4,
Valve plate 5, bearing pin 6, slidiing pin 7, guide pin bushing 8, torsion spring positioning seat 81, support base 9, supporting plate 91, installation sleeve 92, valve pocket 10,
Connecting rod 11, torsion spring 12, secondary spring 13.
Embodiment
In Fig. 1 ~ 7, a kind of plate check valve reliably sealed, including valve seat 3, valve seat 3 are provided with multiple runners, preferably
For two runners, as shown in Figure 2, two runners are semicircle, and cut-off is provided between two runners, in first flow 31 and the
The periphery of two runners 32 is provided with the sealing ring 4 of annular, generally use rubber seal.In preferable scheme, valve seat 3 passes through connection
Sleeve 33 is fixedly connected with upper valve body 1, is fixedly connected in this example using threaded connection, upper valve body 1 by screw thread with lower valve body 2,
Connected herein using tapered thread；Support base 9 is fixedly connected by installation sleeve 92 with lower valve body 2, is connected in this example using screw thread
Connect.
As shown in Fig. 1,3,4,6, support base 9 is arranged on the position relative with valve seat 3, the structure of support base 9 in this example
For installation sleeve 92 is fixedly connected with vertical supporting plate 91, and installation sleeve 92 is the pipe structure of annular, supporting plate 91
Bottom is extend into installation sleeve 92, and is welded to connect with the inwall of installation sleeve 92, the upper width increase of supporting plate 91, with
The inwall contact of valve pocket 10.
Multiple valve plates 5 for forming sealing with runner are connected with bearing pin 6, and valve plate 5 and support base 9 are with rotatably and can phase
The mode of the shift reciprocately of valve seat 3 is connected.In preferable scheme, lower valve body 2 is provided with expanding valve pocket 10, support base 9 and valve plate 5
It is installed in valve pocket 10.Arrow in Fig. 3,4 represents the flow direction of fluid media (medium).
By above-mentioned structure, when valve plate 5 and valve seat 3 are formed when sealing, due to bearing pin 6 can the shift reciprocately of opposite valve seat 3,
As shown in Figure 3, under the pressure effect of lower flow medium, valve plate 5 is pressed on valve seat, and valve plate 5 is with sealing ring 4 equal
Under even pressure effect, fully contact, good sealing is realized, can prevent that toxic gas is reverse during drilling construction
Overflow.In preferable scheme, the alloy powder of plasma selective spray wear resistant corrosion resistant is used in valve inner to improve it
Abrasion and erosion resistant ability.
And as shown in Fig. 8,9, in the prior art because bearing pin is immovable, when the pressure of bottom is excessive, by valve plate 5
It is not horizontal distortion in sealing ring of the valve seat close to the position of bearing pin when being pressed on valve seat, but inclination and distortion, contact conditions
For linear contact lay, sealing structure is unreliable, and uses above-mentioned structure, overcomes the technical problem.
In preferable scheme such as Fig. 3 ~ 6, valve plate 5 and one end fixation of connecting rod 11 are welded to connect, connecting rod 11 it is another
End is provided with a sleeve, and sleeve is pivotally connected with bearing pin 6, and connecting rod 11 can be rotated with bearing pin 6 for the center of circle, and bearing pin 6 and at least two slides
Bearing pin 7 is fixedly connected, and slidiing pin 7 is slidably connected with guide pin bushing 8, and preferable guide pin bushing 8 uses enclosed construction, and the bottom of guide pin bushing 8 is set
There is end cap, steam vent is preferably set on end cap, the structure is suitable to the more severe occasion of working environment；It can also be not provided with
Steam vent, it is vented using the gap between slidiing pin 7 and guide pin bushing 8, with the impulsive force of buffering top flow media.Guide pin bushing 8 with
Support base 9 is fixedly connected.Thus structure, the shift reciprocately of 6 opposite valve seat of bearing pin 3 is realized.
Preferable scheme as shown in fig. 1, the diameter parallel of slidiing pin 7 and valve seat 3.Thus structure, lateral point is reduced
Power.Make the slip of slidiing pin 7 more smooth.
In preferable scheme, the axis of bearing pin 6 and the axis of slidiing pin 7 are orthogonal on a perspective plane.Thus
Structure, realize the rotation switching motion of valve plate 5.
The keying of usual valve plate 5 is controlled by the flow direction of fluid media (medium), and its original state is related to installation direction, when
When valve plate is located at lower section, it is normally opened, is normally closed when valve plate is above.Using normally open in this example.When being arrived
Fluid media impingement from lower section, for valve plate while being overturn along bearing pin 6, bearing pin 6 is close to valve seat direction, valve plate and valve seat it
Between reliably close.
In preferable scheme, the torsion spring 12 being socketed on bearing pin 6 is additionally provided with, one end of torsion spring 12 is hooked in connecting rod 11,
The other end is spacing by the supporting plate 91 of support base 9.Thus structure, make to be defaulted as sealing state between valve seat and valve plate.Need spy
Do not mentionlet alone bright, the only drive valve plate 5 of torsion spring 12 of the mounting means rotates.
In another preferable scheme such as Fig. 3 ~ 6, the torsion spring 12 being socketed on bearing pin 6 is additionally provided with, one end of torsion spring 12 hooks
In connecting rod 11, the torsion spring positioning seat 81 extended to the outer wall direction of valve plate 5 is provided with the upper end of guide pin bushing 8, in torsion spring positioning seat 81
Locating slot is provided with, the other end of torsion spring 12 is spacing by the locating slot of torsion spring positioning seat 81.Torsion spring 12 makes valve plate 5 tend to valve seat
3 directions rotate, simultaneously because the structure of torsion spring positioning seat 81, bearing pin 6 and slidiing pin 7 are also by the spring to the direction of valve seat 3
Power, valve plate 5 is also to the displacement of valve seat 3, the mounting structure of torsion spring 12 of this example, and a torsion spring 12 can be made to realize valve plate upset and to valve
The driving that seat moves.For different operating modes, torsion spring 12 might not make to be formed between valve plate 5 and valve seat 3 close by default
Envelope.The purpose of torsion spring 12 is set, torsion spring 12 is offset the gravity of valve plate 5 to a certain extent, so that less
The impact of fluid media (medium), you can make to form sealing between valve plate 5 and valve seat 3.
In preferable scheme such as Fig. 4, the stopping means for preventing that slidiing pin 7 from deviating from is additionally provided with, such as be arranged on supporting plate
91 limiting plate, or the limiting plate of the bottom of valve seat 3 is arranged on, catch limits the shift position of slidiing pin 7, to avoid sliding
The shift position of dynamic bearing pin 7 is too high, and the upset to valve plate 5 causes to interfere.Along the axis direction of bearing pin 6, limiting plate is with turning round
The position of spring 12 and connecting rod 11 is staggered, in order to avoid cause to interfere.
In further preferred scheme such as Fig. 3, the secondary spring for making slidiing pin 7 close to valve seat 3 is additionally provided with guide pin bushing 8
13.Thus structure, the displacement of slidiing pin 7 is more reliable, and as the aforementioned, secondary spring 13 might not make slidiing pin 7 exist
I.e. to the displacement of valve seat 3 under default conditions, at least secondary spring 13 can partly offset other that be fixedly connected with slidiing pin 7
The gravity of part, so that the displacement of slidiing pin 7 is more smoothly.
Make preferably, the stopping means for preventing that slidiing pin 7 from deviating to be additionally provided with guide pin bushing 8, such as set on slidiing pin 7
There is chute, screw passes through guide pin bushing 8, and the front end of screw is located in the chute of slidiing pin 7, and slidiing pin 7 is limited by chute
Sliding stroke.
In another preferable scheme such as Fig. 7, valve plate 5 is fixedly connected with connecting rod 11, and connecting rod 11 is pivotally connected with bearing pin 6,
The supporting plate 91 of support base 9 is provided with two seat boards with slotted hole, and bearing pin 6 is arranged in seat board.The structure is relatively simple, but
Be rotatable parts working face exposed to outer, therefore be only applicable to the less severe occasion of working environment, this programme is suitable to will be only
Return the occasion reversely installed of valve, i.e. the installation direction of check-valves be valve seat in lower section, and valve plate is up, and valve plate 5 leans on gravity pair
Valve seat, which is realized, to be sealed, and the structure is relatively simple.The scheme of torsion spring and secondary spring can also be applied in combination with this programme.
During installation as shown in fig. 1, first valve seat 3 is threadably secured with upper valve body 1 and be connected, by support base 9 and lower valve
Body 2 is fixedly connected, and upper valve body 1 is threadably secured with lower valve body 2 and is connected, can be upper and lower due to employing valve plate 5 in the present invention
The structure of displacement, therefore, for the less demanding of assembly precision.Even if there is the abrasion of valve plate 5 and sealing ring 4, slidiing pin 7
Displacement, also can compensate for part wears.When fluid media (medium) is entered in upper valve body 1 from top, passing through the first of valve seat 3
When runner 31 and second flow channel 32, valve plate 5 is promoted to be rotated with bearing pin 6 for the center of circle, first flow 31 and second flow channel 32 are opened, and are flowed
Body medium is entered in lower valve body 2.At the top of valve plate 5 rounding is provided with close to the side of bearing pin 6.With avoid the rotation of valve plate 5 with
Interference is formed between valve seat 3, as shown in Figure 4.
As shown in Figure 3, by default, torsion spring 12 applies a thrust to torsion spring positioning seat 81 and connecting rod 11,
The thrust produces two effects, first, promoting connecting rod 11 to rotate, while drives valve plate 5 to rotate, second, promoting on whole bearing pin 6
OK, i.e., slidiing pin 7 under the thrust of torsion spring 12 along the upward sliding of guide pin bushing 8 so that valve plate 5 contacts with sealing ring 4, first
Runner 31 and second flow channel 32 close.
When fluid media (medium) flows upward from below, pressure is produced to valve plate 5.Under pressure, slidiing pin 7 along
Guide pin bushing 8 continues to slide up, and valve plate 5 is more closely contacted with sealing ring 4, further improves sealing effectiveness, therefore the present invention
Be applicable under the operating mode of air seal, such as prevent toxic gas from overflowing.Preferably, the secondary spring 13 of setting can
Further strengthen the effect of sealing.The structure of the present invention, is safeguarded also more convenient.
The above embodiments are only the preferred technical solution of the present invention, and are not construed as the limitation for the present invention, this Shen
Please in embodiment and embodiment in feature in the case where not conflicting, can mutually be combined.The protection model of the present invention
Enclose the equivalent substitution side of technical characteristic in the technical scheme that should be recorded with claim, including the technical scheme of claim record
Case is protection domain.Equivalent substitution i.e. within this range is improved, also within protection scope of the present invention.
Claims (8)
1. a kind of plate check valve reliably sealed, including valve seat（3）, valve seat（3）Pass through branch sleeve（33）With upper valve body（1）
It is fixedly connected, upper valve body（1）Pass through screw thread and lower valve body（2）It is fixedly connected；With valve seat（3）Relative position is provided with support base
（9）, support base（9）Pass through installation sleeve（92）With lower valve body（2）It is fixedly connected, valve seat（3）Two runners are provided with, runner
End face is provided with the sealing ring of annular（4）, it is characterized in that：For forming multiple valve plates of sealing with runner（5）With bearing pin（6）Even
Connect, valve plate（5）With support base（9）With rotatable and can opposite valve seat（3）The mode of shift reciprocately connects；
Lower valve body（2）Provided with expanding valve pocket（10）, support base（9）And valve plate（5）It is installed in valve pocket（10）It is interior.
2. a kind of plate check valve reliably sealed according to claim 1, it is characterized in that：Valve plate（5）With connecting rod
（11）It is fixedly connected, connecting rod（11）With bearing pin（6）Pivot joint, bearing pin（6）With at least two slidiing pins（7）It is fixedly connected, it is sliding
Dynamic bearing pin（7）With guide pin bushing（8）It is slidably connected, guide pin bushing（8）With support base（9）It is fixedly connected.
3. a kind of plate check valve reliably sealed according to claim 2, it is characterized in that：Slidiing pin（7）With valve
Seat（3）Diameter parallel.
4. a kind of plate check valve reliably sealed according to claim 2, it is characterized in that：Bearing pin（6）Axis with
Slidiing pin（7）Axis it is orthogonal on a perspective plane.
5. a kind of plate check valve reliably sealed according to claim 2, it is characterized in that：It is additionally provided with and is socketed in bearing pin
（6）On torsion spring（12）, torsion spring（12）One end hook in connecting rod（11）On, the other end is by support base（9）Supporting plate（91）
It is spacing.
6. a kind of plate check valve reliably sealed according to claim 2, it is characterized in that：It is additionally provided with and is socketed in bearing pin
（6）On torsion spring（12）, torsion spring（12）One end hook in connecting rod（11）On, in guide pin bushing（8）Upper end be provided with to valve plate（5）Outside
The torsion spring positioning seat of wall direction extension（81）, torsion spring（12）The other end by torsion spring positioning seat（81）It is spacing.
7. a kind of plate check valve reliably sealed according to claim 5 or 6, it is characterized in that：In guide pin bushing（8）It is interior
Being additionally provided with makes slidiing pin（7）Close to valve seat（3）Secondary spring（13）, being additionally provided with prevents slidiing pin（7）That deviates from is spacing
Device.
8. a kind of plate check valve reliably sealed according to claim 1, it is characterized in that：Valve plate（5）With connecting rod
（11）It is fixedly connected, connecting rod（11）With bearing pin（6）Pivot joint, in support base（9）Supporting plate（91）Two are provided with oval
The seat board in hole, bearing pin（6）In seat board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710035806.8A CN106594331B (en) | 2017-01-18 | 2017-01-18 | The plate check valve reliably sealed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710035806.8A CN106594331B (en) | 2017-01-18 | 2017-01-18 | The plate check valve reliably sealed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106594331A CN106594331A (en) | 2017-04-26 |
| CN106594331B true CN106594331B (en) | 2018-01-23 |
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ID=58585874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710035806.8A Active CN106594331B (en) | 2017-01-18 | 2017-01-18 | The plate check valve reliably sealed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106594331B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869813B (en) * | 2018-08-29 | 2019-10-11 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of check-valves |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1330749C (en) * | 1988-09-21 | 1994-07-19 | Gary Allan Hocking | Check valves |
| CN2886253Y (en) * | 2006-08-09 | 2007-04-04 | 盐城九龙阀门制造有限公司 | High-pressure butterfly check valve without outward leakage |
| CN202140632U (en) * | 2011-07-01 | 2012-02-08 | 苏州纽威阀门股份有限公司 | Pair-clamp and double-flap check valve |
| CN202927152U (en) * | 2012-10-22 | 2013-05-08 | 安徽荣达阀门有限公司 | Double-clip type disc type check valve with good sealing performance |
| CN206398135U (en) * | 2017-01-18 | 2017-08-11 | 长江大学 | Reliable sealedly plate check valve |
-
2017
- 2017-01-18 CN CN201710035806.8A patent/CN106594331B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1330749C (en) * | 1988-09-21 | 1994-07-19 | Gary Allan Hocking | Check valves |
| CN2886253Y (en) * | 2006-08-09 | 2007-04-04 | 盐城九龙阀门制造有限公司 | High-pressure butterfly check valve without outward leakage |
| CN202140632U (en) * | 2011-07-01 | 2012-02-08 | 苏州纽威阀门股份有限公司 | Pair-clamp and double-flap check valve |
| CN202927152U (en) * | 2012-10-22 | 2013-05-08 | 安徽荣达阀门有限公司 | Double-clip type disc type check valve with good sealing performance |
| CN206398135U (en) * | 2017-01-18 | 2017-08-11 | 长江大学 | Reliable sealedly plate check valve |
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| Publication number | Publication date |
|---|---|
| CN106594331A (en) | 2017-04-26 |
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