CN107559468A - The controllable high-leak tightness valve of pressure medium - Google Patents
The controllable high-leak tightness valve of pressure medium Download PDFInfo
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- CN107559468A CN107559468A CN201710761439.XA CN201710761439A CN107559468A CN 107559468 A CN107559468 A CN 107559468A CN 201710761439 A CN201710761439 A CN 201710761439A CN 107559468 A CN107559468 A CN 107559468A
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- valve
- valve rod
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- seat
- bonnet
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Abstract
The invention discloses the controllable high-leak tightness valve of pressure medium,Including valve body,Bonnet,Spring,Valve seat,Valve rod,Interconnected intake channel is offered on valve body,Exit passageway,Bonnet is connected with valve body,Valve seat is located in intake channel,Spring is located at bonnet interior,Valve rod one end is connected with valve seat,The valve rod other end is fixed with spring,O-ring is provided between valve rod and valve seat,O-ring is circumscribed with valve rod,Pressure sensor is provided with valve seat,Pressure sensor contacts between O-ring and valve seat and with O-ring,The controller being connected with pressure sensor is provided with valve body,Semi-circular sealing gasket is provided between the bonnet of valve rod both sides,Expansion link of the control semi-circular sealing gasket along valve rod radial expansion is connected with semi-circular sealing gasket,Expansion link is connected with controller,The semi-circular sealing gasket of valve rod both sides combines the Gask-O-Seal to be formed with valve rod inscribe.The present invention reduces the abrasion of semi-circular sealing gasket, extends its service life.
Description
Technical field
The present invention relates to a kind of valve, and in particular to the controllable high-leak tightness valve of pressure medium.
Background technology
Unloading valve is the same with general pilot operated compound relief valve structural principle, and the operation principle of ratio unloading valve is：When equipment or
When pressure medium in pipeline increases to over setting, system pressure overcomes spring force to open valve rod, when system pressure declines
Spring force, which makes valve rod set back, closes valve；Therefore, ratio unloading valve needs have higher susceptibility to pressure, once
Unloading valve can not just produce off-load, larger to the systematic influence of proportion of installation unloading valve.
In the prior art, ratio unloading valve is in order to strengthen the pressure sensitivity of its own, in valve rod and bonnet, valve rod and valve
Installation sealing structure between body, because valve rod can move back and forth along central shaft under the force of a spring, valve rod is in movement
During sealing structure between meeting and valve rod and bonnet rub repeatedly, the wear extent of the sealing structure between valve rod and bonnet
Greatly, after a period of time, the sealing structure sealing between valve rod and bonnet is deteriorated even failure so as to have impact on ratio unloading valve
Normal work.
The content of the invention
The technical problems to be solved by the invention are that the sealing structure abrasion of ratio unloading valve is big, and service life is short, purpose
It is to provide pressure medium controllable high-leak tightness valve, the sealing structure service life of solution ratio unloading valve is short, and ratio is unloaded
The problem of lotus valve can not seal for a long time.
The present invention is achieved through the following technical solutions：
The controllable high-leak tightness valve of pressure medium, including valve body, bonnet, spring, valve seat, valve rod, open on the valve body
Provided with interconnected and orthogonal intake channel, exit passageway, bonnet is connected with valve body, and valve seat is located at intake channel
Interior, spring is located at bonnet interior, valve rod between valve seat and spring and with intake channel concentric co-axial, described valve rod one end with
Valve seat is connected, and the valve rod other end is fixed through bonnet with spring, and O-ring, O-ring and valve are provided between the valve rod and valve seat
Bar is circumscribed, and pressure sensor is provided with valve seat, and pressure sensor contacts between O-ring and valve seat and with O-ring, valve body
On be provided with the controller being connected with pressure sensor, semi-circular sealing gasket, semi-circular are provided between the bonnet of valve rod both sides
Expansion link of the control semi-circular sealing gasket along valve rod radial expansion is connected with sealing gasket, expansion link is connected with controller,
The semi-circular sealing gasket of valve rod both sides combines the Gask-O-Seal to be formed with valve rod inscribe.
The principle of ratio unloading valve is：When the pressure medium in equipment or pipeline increases to over setting, system pressure
Overcome spring force to open valve rod, close valve when system pressure decline spring force makes valve rod set back；Ratio unloading valve
Need that there is high sensitive to pressure；When the pressure medium in equipment or pipeline exceedes, the medium of intake channel can be applied to valve rod
Add a motive force, valve rod drills the direction compression spring of motive force, after valve rod movement, can open exit passageway, equipment or pipe
Excessively medium in road can flow out the effect for realizing unloading pressure from exit passageway, once medium is let out from the other parts of valve body
Leak, receiving power on spring and valve rod can change, it may appear that the situation that valve rod resets or do not resetted for a long time in advance, influence
The unloading of pressure, pipeline and equipment can not be protected, after the medium of valve inner leaks, can also influence the ring in the external world
Border；Therefore, the sealing strengthened between valve rod and bonnet, valve rod and valve body is extremely important；In the prior art valve rod and valve seat,
It is sealed frequently with sealing ring between valve rod and bonnet, valve rod is close between meeting and valve rod and bonnet in moving process
Seal continuous frictional, sealing ring between valve rod and bonnet is using having substantial amounts of abrasion, the sealing of sealing ring after a period of time
Performance can be deteriorated, and the service life of sealing ring shortens, so that medium would tend to occur in ratio unloading valve over time
The situation of leakage；
The present invention, in order to strengthen its sealing, changes valve rod and valve in the case where solving ratio unloading valve sealing
Sealing structure between seat, valve rod and bonnet, reduces the abrasion of sealing structure, extends its service life；The realization of the present invention is former
Manage and be：When pressure medium inside equipment or pipeline is higher than setting, the medium entered from intake channel promotes valve rod, this
When, valve rod can extrude O-ring, and O-ring, which deforms upon, applies pressure to pressure sensor, after pressure sensor detection pressure change
Electric signal is sent to controller, after controller receives electric signal, controller control expansion link, expansion link is towards the direction of valve rod
Mobile, expansion link can drive semi-circular sealing gasket to be moved towards valve rod direction, but when valve rod is moved to exit passageway and opened, semi-ring
Shape sealing gasket combines to form a complete O-ring seal and tangent with valve rod, when valve rod, which is moved to, to be moved, now,
The pressure that valve rod is subject to is maximum, and now, expansion link valve rod direction and compresses semi-circular sealing gasket, and semi-circular sealing gasket compresses valve rod
Form sealing state；After detection device or pipeline pressure recover to setting, controller control expansion link away from
The direction movement of valve rod, now, valve rod resets under the action of the spring, and valve rod will not be with semi-circular sealing gasket in valve rod reseting procedure
Friction is produced, reduces the abrasion of semi-circular sealing gasket, extends its service life, the better tightness of ratio unloading valve；And
And in the present invention, only when valve rod is moved to the position of exit passageway, semi-circular sealing gasket just can be with valve stem contacts and sealing
Valve rod, time of contact of valve rod and semi-circular sealing gasket is shortened so as to reduce the abrasion of semi-circular sealing gasket.
The seat retainer of fixed valve base is provided with the valve body, seat retainer is located at valve seat close to the side of valve rod, valve
The through hole passed through for valve rod is offered on seat guard ring.Seat retainer is used to seal up the connection gap between valve seat and valve body, increases
The sealing of strong ratio unloading valve.
When the Gask-O-Seal that the semi-circular sealing gasket surrounds is with valve rod inscribe, outer wall and the bonnet phase of Gask-O-Seal
Cut.The outer wall of Gask-O-Seal is in contact with bonnet, and sealing is good, outer wall and the tangent saving material of bonnet of Gask-O-Seal,
Processing technology is simple.
The length of the semi-circular sealing gasket in the axial direction is 2-3cm.The longer sealing of semi-circular sealing gasket is better, but
It is that semi-circular sealing gasket is longer bigger to valve rod movement obstruction.
The fixed seat of connecting spring and valve rod is provided between the spring and valve rod.Fixed seat is used to be fixedly connected with spring
With valve rod.
The present invention compared with prior art, has the following advantages and advantages：
1st, valve rod will not be close with semi-circular in valve rod reseting procedure in the high-leak tightness valve of present media pressure controllable
Packing produces friction, reduces the abrasion of semi-circular sealing gasket, extends its service life, the sealing of ratio unloading valve is more
It is good；
2nd, in the high-leak tightness valve of present media pressure controllable only when valve rod is moved to the position of exit passageway,
Semi-circular sealing gasket with valve stem contacts and sealed valve stem, can just shorten time of contact of valve rod and semi-circular sealing gasket so as to subtract
The abrasion of semi-circular sealing gasket is lacked；
3rd, the high-leak tightness valve good airproof performance of present media pressure controllable, controlled by controller and pressure sensor
Expansion link, it is easy to operate.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is partial structural diagram of the present invention.
Mark and corresponding parts title in accompanying drawing：
1- valve bodies, 2- bonnets, 3- springs, 4- valve seats, 5- valve rods, 6-O shape circles, 7- pressure sensors, 8- controllers, 9- half
Gask-O-Seal, 10- expansion links, 11- seat retainers, 12- fixed seats.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As shown in Figure 1 and Figure 2, the high-leak tightness valve of present media pressure controllable, including valve body 1, bonnet 2, spring 3,
Valve seat 4, valve rod 5, offer on the valve body 1 and be interconnected and orthogonal intake channel, exit passageway, bonnet 2 and valve
Body 1 is connected, and valve seat 4 is located in intake channel, and spring 3 is located inside bonnet 2, and valve rod 5 is between valve seat 4 and spring 3
And be connected with intake channel concentric co-axial, described one end of valve rod 5 with valve seat 4, the other end of valve rod 5 is solid with spring 3 through bonnet 2
It is fixed, O-ring 6 is provided between the valve rod 5 and valve seat 4, O-ring 6 and valve rod 5 are circumscribed, and pressure sensor is provided with valve seat 4
7, pressure sensor 7 contacts between O-ring 6 and valve seat 4 and with O-ring 6, is provided with valve body 1 and connects with pressure sensor 7
The controller 8 connect, semi-circular sealing gasket 9 is provided between the bonnet 2 of the both sides of valve rod 5, control is connected with semi-circular sealing gasket 9
Expansion link 10 of the semi-circular sealing gasket 9 along the radial expansion of valve rod 5, expansion link 10 are connected with controller 8, the both sides of valve rod 5
The combination of semi-circular sealing gasket 9 forms the Gask-O-Seal with the inscribe of valve rod 5.The ring packing that the semi-circular sealing gasket 9 surrounds
When pad is with 5 inscribe of valve rod, the outer wall and bonnet 2 of Gask-O-Seal are tangent.The length of the semi-circular sealing gasket 9 in the axial direction is
2-3cm.The fixed seat 12 of connecting spring 3 and valve rod 5 is provided between the spring 3 and valve rod 5.
The present invention realization principle be：When pressure medium inside equipment or pipeline is higher than setting, from intake channel
The medium of entrance promotes valve rod, and now, valve rod can extrude O-ring, and O-ring, which deforms upon, applies pressure, pressure to pressure sensor
Electric signal is sent to controller after force snesor detection pressure change, after controller receives electric signal, controller control is flexible
Bar, expansion link move towards the direction of valve rod, and expansion link can drive semi-circular sealing gasket to be moved towards valve rod direction, but valve rod moves
Move to exit passageway open when, semi-circular sealing gasket combines to form a complete O-ring seal and tangent with valve rod, works as valve
Bar is moved to when can not move, and now, the pressure that valve rod is subject to is maximum, and now, it is close that expansion link valve rod direction compression semi-circular
Packing, semi-circular sealing gasket compress valve rod and form sealing state；After detection device or pipeline pressure recover to setting,
Controller controls expansion link to be moved away from the direction of valve rod, and now, valve rod resets under the action of the spring, valve rod reseting procedure
Middle valve rod will not produce friction with semi-circular sealing gasket, reduce the abrasion of semi-circular sealing gasket, extend its service life, than
The better tightness of example unloading valve；And in the present invention, only when valve rod is moved to the position of exit passageway, semi-circular sealing
Pad with valve stem contacts and sealed valve stem, can just shorten time of contact of valve rod and semi-circular sealing gasket so as to reduce semi-circular
The abrasion of sealing gasket.
Embodiment 2
Based on embodiment 1, the seat retainer 11 of fixed valve base 4 is provided with the valve body 1, seat retainer 11 is located at valve seat
4 offer the through hole passed through for valve rod 4 on the side of valve rod 5, seat retainer 11.Seat retainer be used for seal up valve seat with
Connection gap between valve body, strengthen the sealing of ratio unloading valve.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (5)
1. the controllable high-leak tightness valve of pressure medium, including valve body (1), bonnet (2), spring (3), valve seat (4), valve rod (5),
Interconnected and orthogonal intake channel, exit passageway are offered on the valve body (1), bonnet (2) is connected with valve body (1)
Fixed, valve seat (4) is located in intake channel, and spring (3) is located at bonnet (2) inside, and valve rod (5) is located at valve seat (4) and spring (3)
Between and be connected with valve seat (4) with intake channel concentric co-axial, described valve rod (5) one end, valve rod (5) other end passes through bonnet
(2) it is fixed with spring (3), it is characterised in that be provided with O-ring (6) between the valve rod (5) and valve seat (4), O-ring (6) and
Valve rod (5) is circumscribed, is provided with pressure sensor (7) on valve seat (4), pressure sensor (7) be located at O-ring (6) and valve seat (4) it
Between and contact with O-ring (6), the controller (8) being connected with pressure sensor (7), valve rod (5) both sides are provided with valve body (1)
Bonnet (2) between be provided with semi-circular sealing gasket (9), be connected with semi-circular sealing gasket (9) control semi-circular sealing gasket (9)
Along the expansion link (10) of valve rod (5) radial expansion, expansion link (10) is connected with controller (8), the semi-ring of valve rod (5) both sides
Shape sealing gasket (9) combination forms the Gask-O-Seal with valve rod (5) inscribe.
2. the controllable high-leak tightness valve of pressure medium according to claim 1, it is characterised in that on the valve body (1)
The seat retainer (11) of fixed valve base (4) is provided with, seat retainer (11) is located at valve seat (4) close to the side of valve rod (5), valve seat
The through hole passed through for valve rod (4) is offered on guard ring (11).
3. the controllable high-leak tightness valve of pressure medium according to claim 1, it is characterised in that the semi-circular sealing
When the Gask-O-Seal that pad (9) surrounds is with valve rod (5) inscribe, the outer wall and bonnet (2) of Gask-O-Seal are tangent.
4. the controllable high-leak tightness valve of pressure medium according to claim 3, it is characterised in that the semi-circular sealing
It is 2-3cm to pad the length of (9) in the axial direction.
5. the controllable high-leak tightness valve of pressure medium according to claim 1, it is characterised in that the spring (3) with
The fixed seat (12) of connecting spring (3) and valve rod (5) is provided between valve rod (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710761439.XA CN107559468A (en) | 2017-08-30 | 2017-08-30 | The controllable high-leak tightness valve of pressure medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710761439.XA CN107559468A (en) | 2017-08-30 | 2017-08-30 | The controllable high-leak tightness valve of pressure medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107559468A true CN107559468A (en) | 2018-01-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710761439.XA Pending CN107559468A (en) | 2017-08-30 | 2017-08-30 | The controllable high-leak tightness valve of pressure medium |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201795068U (en) * | 2010-03-11 | 2011-04-13 | 浙江固特气动机械有限公司 | Flexibly sealed gate valve |
| CN103244676A (en) * | 2013-05-23 | 2013-08-14 | 张家港市三利密封合金材料有限公司 | Split-type sealing ring |
| WO2014078619A2 (en) * | 2012-11-16 | 2014-05-22 | Vetco Gray Inc. | Thermally-sensitive triggering mechanism for selective mechanical energization of annular seal element |
| CN204252917U (en) * | 2014-12-03 | 2015-04-08 | 张家口中地装备探矿工程机械有限公司 | A kind of polished rod seal structure |
| CN204592456U (en) * | 2015-04-09 | 2015-08-26 | 扬中新亚自控工程有限公司 | A kind of ratio unloading valve |
| CN207145697U (en) * | 2017-08-30 | 2018-03-27 | 赛洛克流体设备成都有限公司 | A kind of ratio unloading valve |
-
2017
- 2017-08-30 CN CN201710761439.XA patent/CN107559468A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201795068U (en) * | 2010-03-11 | 2011-04-13 | 浙江固特气动机械有限公司 | Flexibly sealed gate valve |
| WO2014078619A2 (en) * | 2012-11-16 | 2014-05-22 | Vetco Gray Inc. | Thermally-sensitive triggering mechanism for selective mechanical energization of annular seal element |
| CN103244676A (en) * | 2013-05-23 | 2013-08-14 | 张家港市三利密封合金材料有限公司 | Split-type sealing ring |
| CN204252917U (en) * | 2014-12-03 | 2015-04-08 | 张家口中地装备探矿工程机械有限公司 | A kind of polished rod seal structure |
| CN204592456U (en) * | 2015-04-09 | 2015-08-26 | 扬中新亚自控工程有限公司 | A kind of ratio unloading valve |
| CN207145697U (en) * | 2017-08-30 | 2018-03-27 | 赛洛克流体设备成都有限公司 | A kind of ratio unloading valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180109 |
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| RJ01 | Rejection of invention patent application after publication |