CN206988448U - A kind of double spool linkage valve - Google Patents
A kind of double spool linkage valve Download PDFInfo
- Publication number
- CN206988448U CN206988448U CN201720707962.XU CN201720707962U CN206988448U CN 206988448 U CN206988448 U CN 206988448U CN 201720707962 U CN201720707962 U CN 201720707962U CN 206988448 U CN206988448 U CN 206988448U
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- CN
- China
- Prior art keywords
- main valve
- valve
- valve plug
- valve core
- plug
- 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 - Fee Related
Links
- 238000009434 installation Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 230000000694 effects Effects 0.000 claims abstract description 7
- 230000006837 decompression Effects 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 239000013536 elastomeric material Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000007774 longterm Effects 0.000 abstract description 12
- 230000003628 erosive effect Effects 0.000 abstract description 5
- 230000001052 transient effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model discloses a kind of double spool linkage valve, including valve body, valve rod, valve seat and bonnet, valve rod to be connected with drive mechanism.Main valve plug guide pin bushing is installed in valve body, main valve plug is movably set with main valve plug guide pin bushing, one end of main valve plug is stretched out from main valve core cap and is fixedly linked with valve rod, and the other end offers the auxiliary valve core installation cavity of opening, and auxiliary valve core installation cavity internal activity is provided with auxiliary valve core.The bar portion of connecting bolt passes through the through hole opened up on auxiliary valve core and main valve plug to be threadedly coupled with main valve core cap, main valve plug and main valve core cap are fixed together, auxiliary valve core is movably set in connecting bolt, and linkage spring is set in the bar portion of connecting bolt and clamped between major and minor valve element.Main valve plug cooperatively forms the secondary and hard sealing pair of soft seal with the soft seal seat on valve seat and hard seal receptacle respectively with auxiliary valve core.The utility model uses double spool linkage, realizes that soft and hard seal is combined, and avoids valve seat erosion failure, ensures long term seal zero leakage.
Description
Technical field
The utility model belongs to valve technology field, more particularly to a kind of double spool linkage valve.
Background technology
Valve is the control unit in media feed system.How valve realizes sealing reliably and with long-term, to ensureing product
Quality play vital effect.Although the hard sealing resistance to erosion of metal to metal is good, it can be difficult to ensureing that long term zero is let out
Leakage, once there is small leakage, it will serious cavitation erosion occurs, so as to damage valve element, causes valve seal to fail.Only use
Soft seal, it can just be really achieved longtime running and keep zero leakage, but open and close moment, due to passage very little, flow velocity is very
Greatly, if without any protection, soft seal can be washed away, damage by serious, lose sealing property.Especially High Pressure Difference (10~
Under 30MPa), the phenomenon washed away that soft seal is subject to is even more serious, it is easier to damages, causes sealing property to fail.
Utility model content
The utility model is intended to overcome above-mentioned the deficiencies in the prior art, it is proposed that a kind of double spool linkage valve,
Using the double spool linkage of uniqueness, realize that soft and hard seal is combined, ensure long term seal zero leakage.
Technical scheme is used by the utility model solves its technical problem：A kind of double spool linkage valve includes valve body
And valve rod, valve seat is installed in the valve body, bonnet is fixed with the valve body, the valve rod is connected with drive mechanism；Institute
State and main valve plug guide pin bushing is installed in valve body, main valve plug is movably set with the main valve plug guide pin bushing, the main valve plug is provided with master
Cartridge cover, one end of the main valve plug are stretched out from the main valve core cap and are fixedly connected with the valve rod, and the other end offers spacious
The auxiliary valve core installation cavity of mouth, the auxiliary valve core installation cavity internal activity are provided with auxiliary valve core, the main valve plug and the auxiliary valve core
Through hole is offered respectively；
Connecting bolt and linkage spring, the bar portion of the connecting bolt pass through the insertion of the auxiliary valve core and the main valve plug
Hole is threadedly coupled with the main valve core cap, and the main valve plug and the main valve core cap are fixed together by the connecting bolt, institute
State auxiliary valve core and be movably set in the connecting bolt；The linkage spring is set in the bar portion of the connecting bolt and clamped in institute
State between main valve plug and the auxiliary valve core；
The valve seat is provided with soft seal seat and hard seal receptacle, and the main valve plug cooperatively forms soft close with the soft seal seat
Envelope is secondary, and the auxiliary valve core cooperatively forms hard sealing pair with the hard seal receptacle.
Further, the soft seal seat is made up of elastomeric material, and the hard seal receptacle is made up of metal material.
Further, the main valve plug offers the counterbore for installing the linkage spring.
Further, the auxiliary valve core offers the counterbore on the head for accommodating the connecting bolt.
Further, the space between the main valve plug guide pin bushing and the valve seat forms fluid issuing, in the fluid issuing
Place is provided with the decompression set of multilayer nest together, and medium flow field through hole is offered on the wall of the decompression set.
Further, between the main valve plug and the auxiliary valve core, between the main valve plug guide pin bushing and the multilevel decompression set
And it is provided with sealing ring between the main valve core cap and the main valve plug.
Further, the internal perisporium of the main valve plug guide pin bushing is that ladder is poroid, and the periphery wall of the main valve plug is ladder shaft-like,
The poroid main valve plug guide pin bushing internal perisporium of the ladder is engaged the master to form annular with the main valve plug periphery wall of the ladder shaft-like
The counter balance pocket of valve element first, the main valve plug stretch out between one end of the main valve core cap and the main valve plug guide pin bushing and described
The counter balance pocket of main valve plug second of annular is surrounded between main valve core cap and the bonnet, main valve plug first is offered on the main valve plug
Balance pipe and the balance pipe of main valve plug second, auxiliary valve core balance pipe, the balance pipe of main valve plug first are offered on the auxiliary valve core
Bottom and the counter balance pocket of the main valve plug first of the main valve plug are connected, the balance pipe of main valve plug second connects the main valve
The counter balance pocket of core second and the auxiliary valve core installation cavity, the auxiliary valve core balance pipe connect the auxiliary valve core installation cavity and the secondary valve
Core bottom.
Further, filter assemblies are provided with the valve seat.
Further, the main valve plug is fixedly connected with the valve rod by screw thread and connecting pin.
Further, the drive mechanism uses electric operator or pneumatic actuator.
After employing above-mentioned technical proposal, the beneficial effects of the utility model are：
1) due to using double spool linkage, in valve opening moment, passage very little, flow velocity is very big, but due to pair
Valve element presses to valve seat all the time under the pressure of linkage spring, cooperatively forms hard sealing pair with hard seal receptacle, medium is isolated, prevented
Open moment swiftly flowing medium to wash away soft seal seat, avoid valve seal failure, ensure that long term seal zero is let out
Leakage.In valve turn-off transient, same passage very little, flow velocity is very big, but because auxiliary valve core is first pressed under the pressure of linkage spring
To valve seat, hard sealing pair is cooperatively formed with hard seal receptacle, medium is isolated, it is therefore prevented that the swiftly flowing medium of turn-off transient is to soft
Washing away for seal receptacle, avoids valve seal from failing, and ensures long term seal zero leakage.
No matter valve is in moment or turn-off transient is opened, all the time to seal off moment swiftly flowing medium firmly, from
And protect soft seal seat long-term not by erosion damage, ensure long term seal zero leakage.Double spool passes through connecting bolt and linkage bullet
Spring realizes that linkage acts on, ingenious in design, reliable.It is especially more applicable under high pressure differential.
2) balance pipe of main valve plug first, the pressure between the bottom of main valve plug and the counter balance pocket of main valve plug first can be balanced
Power；The balance pipe of main valve plug second and auxiliary valve core balance pipe collective effect, bottom, the auxiliary valve core installation cavity of auxiliary valve core can be balanced
And the pressure between the counter balance pocket of main valve plug second, after balancing pressure valve opening and closing can be made to be more prone to light.
Brief description of the drawings
Fig. 1 is a kind of double spool linkage valve structural representation of the utility model；
Fig. 2 is the partial schematic diagram that Fig. 1 double spools linkage valve opens moment；
Fig. 3 is the partial schematic diagram of Fig. 1 double spool linkage valve openings；
Fig. 4 is the partial schematic diagram of Fig. 1 double spool linkage valve turn-off transients；
Fig. 5 is the partial schematic diagram of Fig. 1 double spool linkage valve closed modes；
In figure：1- valve bodies, 2- valve seats, 21- soft seal seats, the hard seal receptacles of 22-, 23- filter assemblies, 3- valve rods, 4- valves
Lid, 5- decompression sets, 6- main valve plug guide pin bushings, 7- main valve plugs, 71- main valve core caps, the balance pipe of 72- main valve plugs first, 73- main valve plugs the
Two balance pipes, 8- auxiliary valve cores, 81- auxiliary valve core balance pipes, 9- connecting bolts, 10- linkage springs, 11- connecting pins, 12- sealing rings,
The counter balance pocket of A- main valve plugs first, the counter balance pocket of B- main valve plugs second, C- auxiliary valve core installation cavitys.
Embodiment
The utility model is described in further detail with reference to accompanying drawing.
As shown in figure 1, a kind of double spool linkage valve, valve seat 2 is installed in valve body 1, filter assemblies are provided with valve seat 2
23, circulation medium is filtered, to prevent particle media infringement soft seal seat 21.Be fixed with bonnet 4 on valve body 1, valve rod 3 with
Drive mechanism is connected；Drive mechanism uses electric operator or pneumatic actuator.Main valve plug guide pin bushing 6 is installed in valve body 1,
Space between main valve plug guide pin bushing 6 and valve seat 2 forms fluid issuing, and the drop of multilayer nest together is provided with fluid outlet
Gland 5, decompression covers offers medium flow field through hole on 5 wall.Main valve plug 7 is movably set with main valve plug guide pin bushing 6, and (main valve plug 7 can
Moved up and down in main valve plug guide pin bushing 6), main valve plug 7 is provided with main valve core cap 71, and one end of main valve plug 7 is stretched from main valve core cap 71
Going out and be fixedly connected with valve rod 3 by screw thread and connecting pin 11, the other end of main valve plug 7 offers the auxiliary valve core installation cavity C of opening,
Auxiliary valve core installation cavity C internal activities are provided with auxiliary valve core 8, and (auxiliary valve core 8 can move up and down in auxiliary valve core installation cavity C, may move
To outside auxiliary valve core installation cavity C).
The internal perisporium of main valve plug guide pin bushing 6 is that ladder is poroid, and the periphery wall of main valve plug 7 is ladder shaft-like, the poroid master of ladder
The internal perisporium of valve element guide pin bushing 6 is engaged main valve plug the first counter balance pocket A to form annular with the periphery wall of main valve plug 7 of ladder shaft-like, main
Valve element 7 stretches out between one end of main valve core cap 71 and main valve plug guide pin bushing 6 and surrounds annular between main valve core cap 71 and bonnet 4
Main valve plug the second counter balance pocket B, offer the first balance pipe of main valve plug 72 and the second balance pipe of main valve plug 73 on main valve plug 7, it is secondary
Auxiliary valve core balance pipe 81 is offered on valve element 8, the first balance pipe of main valve plug 72 connects bottom and the main valve plug first of main valve plug 7
Counter balance pocket A, institute's the second balance pipe of main valve plug 73 connect main valve plug the second counter balance pocket B and auxiliary valve core installation cavity C, auxiliary valve core balance pipe
81 connection auxiliary valve core installation cavity C and the bottom of auxiliary valve core 8.The second balance pipe of main valve plug 73 opens up straight with auxiliary valve core balance pipe 81
Footpath is identical, and the position opened up is mutually corresponding.Valve opening and closing is set to be more prone to light after balance pressure.
The bar portion of connecting bolt 9 is threadedly coupled through the through hole of auxiliary valve core 8 and main valve plug 7 with main valve core cap 71, is connected
Main valve plug 7 and main valve core cap 71 are fixed together by bolt 9.Auxiliary valve core 8 offers the counterbore on the head for accommodating connecting bolt 9,
Auxiliary valve core 8 is movably set in connecting bolt 9.Main valve plug 7 offers the counterbore of installation linkage spring 10, and linkage spring 10 is set in
The bar portion of connecting bolt 9 is simultaneously clamped between main valve plug 7 and auxiliary valve core 8.
Valve seat 2 is provided with soft seal seat 21 and hard seal receptacle 22, and main valve plug 7 cooperatively forms soft seal with soft seal seat 21
Pair, realize zero leakage；Auxiliary valve core 8 cooperatively forms hard sealing pair with hard seal receptacle 22, primarily serves spacer medium protection soft seal
The effect of seat, soft seal seat 21 are made up of elastomeric material, and hard seal receptacle 22 is made up of metal material.
Between main valve plug 7 and auxiliary valve core 8, main valve plug guide pin bushing 6 and multilevel decompression set 5 between and main valve core cap 71 and main valve plug
Sealing ring 12 is provided between 7, sealing to each other is realized by sealing ring 12, sealing ring 12 can use lip packing
Circle.
The operation principle of double spool linkage valve：
Moment is opened, as shown in Fig. 2 electric operator or pneumatic actuator band ovable valve stem 3 move up, due to even
Main valve plug 7 and main valve core cap 71 are fixed together by connecting bolt 9, therefore valve rod 3 drives also band while move up of main valve plug 7
Dynamic main valve core cap 71 and connecting bolt 9 together move up.But now auxiliary valve core 8 presses to all the time under the pressure of linkage spring 10
Valve seat 2 (not with move up), auxiliary valve core 8 cooperatively form hard sealing pair with the hard seal receptacle 22 on valve seat 2, by medium every
From, it is therefore prevented that moment swiftly flowing medium washing away to soft seal seat 21 is opened, avoids valve seal failure, is ensured long-term
Seal zero leakage.
Into opening, as shown in figure 3, main valve plug 7 continues to drive connecting bolt 9 to move up, when connecting bolt 9
When head reaches the position 1 of the counterbore of auxiliary valve core 8, connecting bolt 9 drives auxiliary valve core 8 together to be moved up with main valve plug 7, Zhi Daofa
Door full open.When auxiliary valve core 8 starts to move, main valve plug 7 has been moved off a certain distance of soft seal seat 21, can avoid in time
Washing away for flow at high speed medium, avoids valve seat damage.
Turn-off transient, as shown in figure 4, electric operator or pneumatic actuator band ovable valve stem 3 move down, due to even
Main valve plug 7 and main valve core cap 71 are fixed together by connecting bolt 9, therefore valve rod 3 drives also band while move down of main valve plug 7
Dynamic main valve core cap 71 and connecting bolt 9 together move down, now auxiliary valve core 8 under the pressure of linkage spring 10 also with together
Move down.Auxiliary valve core 8 first presses to valve seat 2, auxiliary valve core 8 and the hard seal receptacle 22 on valve seat 2 in the presence of the spring 10 that links
Hard sealing pair is cooperatively formed, medium is isolated, prevents moment swiftly flowing medium the washing away to soft seal seat 21 closed.
Into closed mode, as shown in figure 5, valve rod 3 continues to move down, main valve plug 7, main valve core cap 71 and connection are driven
Bolt 9 continues to move down.Main valve plug 7 compresses the linkage spring 10 between main valve plug 7 and auxiliary valve core 8 simultaneously, makes secondary valve
The seal pressure of core 8 and hard seal receptacle 22 continues to increase.Subsequent main valve plug 7 presses to valve seat 2, and main valve plug 7 is matched somebody with somebody with soft seal seat 21
Conjunction forms soft seal pair, and long term seal zero leakage can be achieved.
Double spool by the spring 10 that links realize linkage act on, no matter valve opening moment or turn-off transient, all the time with hard
Moment swiftly flowing medium is sealed off, so as to protect soft seal seat 21 long-term not by erosion damage, ensures long term seal zero
Leakage.It is ingenious in design, it is reliable.It is especially more applicable under high pressure differential.
Claims (10)
1. a kind of double spool linkage valve, including：
Valve body and valve rod, valve seat is installed in the valve body, bonnet, the valve rod and drive mechanism phase are fixed with the valve body
Connection；Characterized in that,
Main valve plug guide pin bushing is installed in the valve body, main valve plug is movably set with the main valve plug guide pin bushing, the main valve plug is set
Main valve core cap is equipped with, one end of the main valve plug is stretched out from the main valve core cap and is fixedly connected with the valve rod, and the other end is opened
Auxiliary valve core installation cavity provided with opening, the auxiliary valve core installation cavity internal activity are provided with auxiliary valve core, the main valve plug and described
Auxiliary valve core offers through hole respectively；
Connecting bolt and linkage spring, the bar portion of the connecting bolt through the through hole of the auxiliary valve core and the main valve plug with
The main valve plug and the main valve core cap are fixed together by the main valve core cap threaded connection, the connecting bolt, the pair
Valve element is movably set in the connecting bolt；The linkage spring is set in the bar portion of the connecting bolt and clamped in the master
Between valve element and the auxiliary valve core；
The valve seat is provided with soft seal seat and hard seal receptacle, and the main valve plug cooperatively forms soft seal with the soft seal seat
Pair, the auxiliary valve core cooperatively form hard sealing pair with the hard seal receptacle.
2. double spool linkage valve as claimed in claim 1, it is characterised in that the soft seal seat is made up of elastomeric material,
The hard seal receptacle is made up of metal material.
3. double spool linkage valve as claimed in claim 1, it is characterised in that the main valve plug offers the installation linkage
The counterbore of spring.
4. double spool linkage valve as claimed in claim 1, it is characterised in that the auxiliary valve core, which offers, accommodates the connection
The counterbore on the head of bolt.
5. double spool linkage valve as claimed in claim 1, it is characterised in that between the main valve plug guide pin bushing and the valve seat
Space form fluid issuing, the decompression set of multilayer nest together is installed in the fluid outlet, the decompression set
Medium flow field through hole is offered on wall.
6. double spool linkage valve as claimed in claim 5, it is characterised in that between the main valve plug and the auxiliary valve core,
Sealing ring is provided between the main valve plug guide pin bushing and the decompression set and between the main valve core cap and the main valve plug.
7. double spool linkage valve as claimed in claim 1, it is characterised in that the internal perisporium of the main valve plug guide pin bushing is ladder
Poroid, the periphery wall of the main valve plug is ladder shaft-like, the poroid main valve plug guide pin bushing internal perisporium of the ladder and the multi-diameter shaft
The main valve plug periphery wall of shape is engaged the counter balance pocket of main valve plug first to form annular, and the main valve plug stretches out the main valve core cap
The main valve plug second that annular is surrounded between one end and the main valve plug guide pin bushing and between the main valve core cap and the bonnet is flat
Weigh chamber, offers the balance pipe of main valve plug first and the balance pipe of main valve plug second on the main valve plug, is offered on the auxiliary valve core
Auxiliary valve core balance pipe, the balance pipe of main valve plug first connects the bottom of the main valve plug and the main valve plug first balances
Chamber, the balance pipe of main valve plug second connect the counter balance pocket of main valve plug second and the auxiliary valve core installation cavity, the auxiliary valve core
Balance pipe connects the auxiliary valve core installation cavity and the auxiliary valve core bottom.
8. double spool linkage valve as claimed in claim 1, it is characterised in that be provided with filter assemblies in the valve seat.
9. double spool linkage valve as claimed in claim 1, it is characterised in that the main valve plug passes through screw thread with the valve rod
It is fixedly connected with connecting pin.
10. double spool linkage valve as claimed in claim 1, it is characterised in that the drive mechanism uses electronic execution machine
Structure or pneumatic actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720707962.XU CN206988448U (en) | 2017-06-16 | 2017-06-16 | A kind of double spool linkage valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720707962.XU CN206988448U (en) | 2017-06-16 | 2017-06-16 | A kind of double spool linkage valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206988448U true CN206988448U (en) | 2018-02-09 |
Family
ID=61396630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720707962.XU Expired - Fee Related CN206988448U (en) | 2017-06-16 | 2017-06-16 | A kind of double spool linkage valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206988448U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013693A (en) * | 2017-06-16 | 2017-08-04 | 山东益都阀门集团股份有限公司 | A kind of double spool linkage valve |
-
2017
- 2017-06-16 CN CN201720707962.XU patent/CN206988448U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013693A (en) * | 2017-06-16 | 2017-08-04 | 山东益都阀门集团股份有限公司 | A kind of double spool linkage valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |