CN201963913U - Taper piston for valve - Google Patents
Taper piston for valve Download PDFInfo
- Publication number
- CN201963913U CN201963913U CN2011200721628U CN201120072162U CN201963913U CN 201963913 U CN201963913 U CN 201963913U CN 2011200721628 U CN2011200721628 U CN 2011200721628U CN 201120072162 U CN201120072162 U CN 201120072162U CN 201963913 U CN201963913 U CN 201963913U
- Authority
- CN
- China
- Prior art keywords
- piston
- tapering
- valve
- taper
- boss
- 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
Images
Landscapes
- Lift Valve (AREA)
Abstract
The utility model relates to a dynamic seal piston for a valve, in particular to a taper piston for the valve, which comprises a piston rack and a taper pull rod which passes through the piston rack, wherein the top part of the taper pull rod is fixed on the piston rack through a locknut; the bottom part of the taper pull rod is provided with a boss with taper; the bottom part of the piston rack is provided with a cushion cap; a seal gasket is filled in the cushion cap; the bottom part of the seal gasket is provided with a soft tapered seal surface of which the taper is consistent with that of a hard tapered seal surface of the boss; a screw thread and the locknut are reversely pulled by the taper pull rod to make the seal gasket and the boss with the taper tightly fitted to form a hard and soft combined tapered seal surface; and the piston rack is also provided with a throttle orifice communicated with an upper cavity of the valve. As the structure is adopted, the dynamic seal piston has the advantages that the goal of zero leakage is achieved and the use cost is reduced.
Description
Technical field
The utility model relates to valve port motive sealing piston, especially a kind ofly is applied to the valve tapering piston that high pressure or excess high pressure valves can reach zero leakage.
Background technique
The valve of prior art is divided into plane soft seal type and the hard sealed type of the conical surface with piston, but soft seal type in plane is because the limitation of its structure and the sealing ring material that uses can only be used for low pressure valve.For satisfying the demand of high pressure valve and excess high pressure valves, prior art mainly is to adopt hard awl sealing, but its difficulty of processing is big, the required precision height is difficult for processing, most importantly can not accomplish zero leakage, in use, sealing is poor, and especially when gas was controlled, it is particularly serious that leakage problem embodies.
In sum, the high pressure of prior art and superhigh pressure sealing valve are poor with hard awl packed-piston sealing, are difficult to the manufacturing cost and use cost height.
Summary of the invention
The purpose of this utility model provides a kind of valve tapering piston that high pressure or excess high pressure valves can reach zero leakage and reduce user cost that is applied to.
For realizing that the technological scheme that the utility model purpose adopts is such, promptly a kind of valve tapering piston comprises piston shelf and passes the tapering pull bar of piston shelf that the top of tapering pull bar is fixed on the piston shelf by locking nut; Wherein: the bottom of described tapering pull bar has the boss of band tapering, and the piston shelf bottom has heavy stand, is filled with sealing gasket in it; Described sealing gasket bottom has the soft bevel sealing surface consistent with the hard bevel sealing surface tapering of boss; By anti-internal thread broaching of tapering pull bar and locking nut sealing gasket and the boss of being with tapering are closely cooperated and constitute the bevel sealing surface of hard soft combination; Also be provided with the throttle orifice that can be communicated with on the described piston shelf with the valve epicoele.
The utility model is owing to said structure, and its advantage is: by soft bevel sealing surface and hard bevel sealing surface double seal, guaranteed the sealability of piston, in use, reached zero leakage; Because the shortening of hard bevel sealing surface conical surface length makes it be easier to processing and assurance required precision, thereby has improved sealability and reduced user cost.
Description of drawings
Device of the present utility model can further specify by the indefiniteness embodiment that accompanying drawing provides.
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, locking nut; 2, piston shelf; 3, tapering pull bar; 4, sealing gasket; 5, throttle orifice; 6, piston ring groove; 7, soft bevel sealing surface; 8, hard bevel sealing surface; 9, boss; 10, heavy stand.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Referring to accompanying drawing 1, the tapering piston of the valve among the figure comprises piston shelf 2 and passes the tapering pull bar 3 of piston shelf that the top of tapering pull bar 3 is fixed on the piston shelf 2 by locking nut 1; Wherein: the bottom of described tapering pull bar 3 has the boss 9 of band tapering, and piston shelf 2 bottoms have heavy stand 10, are filled with sealing gasket 4 in it; Described sealing gasket 4 bottoms have the soft bevel sealing surface 7 consistent with hard bevel sealing surface 8 taperings of boss 9; By tapering pull bar 3 anti-internal thread broachings and locking nut 1 sealing gasket 4 and the boss 9 of being with tapering are closely cooperated and constitute the bevel sealing surface of hard soft combination; Also be provided with the throttle orifice 5 that can be communicated with on the described piston shelf 2 with the valve epicoele.By soft bevel sealing surface and hard bevel sealing surface double seal, guaranteed the sealability of piston, in use, when valve is in low pressure, by soft bevel sealing surface 7 sealings, when valve is in high pressure or ultrahigh pressure, because sealing gasket 4 is compressed, seal simultaneously by soft bevel sealing surface 7 and hard bevel sealing surface 8, reached zero leakage; Because the shortening of hard bevel sealing surface conical surface length makes it be easier to processing and assurance required precision, thereby has improved sealability and reduced user cost.The throttle orifice 5 that brick is established on the piston shelf 2 of this structure is when the valve epicoele needs medium, its supercharging of just circulating.Sealing gasket 4 is locked under the active force of tapering pull bar 3 anti-zip jack panels 1, guarantees that sealing gasket 4 can not pulled off by fluid.
For improving sealability and guidance quality, also be provided with at least one piston ring groove 6 on the described piston shelf 2 of present embodiment.
Be provided with seal ring between described locking nut 1 of present embodiment and the piston shelf 2.Further improved sealing.
Be provided with screw-threaded coupling between described locking nut 1 of present embodiment and the piston shelf 2.
In sum, because the valve with this structure in use, reached zero leakage and reduced user cost.
Claims (3)
1. valve tapering piston comprises piston shelf (2) and passes the tapering pull bar (3) of piston shelf that the top of tapering pull bar (3) is fixed on the piston shelf (2) by locking nut (1); It is characterized in that: the bottom of described tapering pull bar (3) has the boss (9) of band tapering, and piston shelf (2) bottom has heavy stand (10), is filled with sealing gasket (4) in it; Described sealing gasket (4) bottom has the soft bevel sealing surface (7) consistent with hard bevel sealing surface (8) tapering of boss (9); By anti-internal thread broaching of tapering pull bar (3) and locking nut (1) sealing gasket (4) and the boss (9) of being with tapering are closely cooperated and constitute the bevel sealing surface of hard soft combination; Also be provided with the throttle orifice (5) that can be communicated with on the described piston shelf (2) with the valve epicoele.
2. valve tapering piston according to claim 1 is characterized in that: also be provided with at least one piston ring groove (6) on the described piston shelf (2).
3. valve tapering piston according to claim 1 is characterized in that: be provided with seal ring between described locking nut (1) and the piston shelf (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200721628U CN201963913U (en) | 2011-03-18 | 2011-03-18 | Taper piston for valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200721628U CN201963913U (en) | 2011-03-18 | 2011-03-18 | Taper piston for valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201963913U true CN201963913U (en) | 2011-09-07 |
Family
ID=44526449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200721628U Expired - Fee Related CN201963913U (en) | 2011-03-18 | 2011-03-18 | Taper piston for valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201963913U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152537A (en) * | 2017-07-20 | 2017-09-12 | 四川云达科技有限公司 | The intelligent gas valve of two-way conisphere type |
| US10077850B2 (en) | 2016-05-03 | 2018-09-18 | Borgwarner Inc. | Reverse taper piston for pneumatic actuators |
| CN109114065A (en) * | 2018-08-22 | 2019-01-01 | 天津大学 | A kind of sealing device for fast press brake piston |
-
2011
- 2011-03-18 CN CN2011200721628U patent/CN201963913U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10077850B2 (en) | 2016-05-03 | 2018-09-18 | Borgwarner Inc. | Reverse taper piston for pneumatic actuators |
| CN107152537A (en) * | 2017-07-20 | 2017-09-12 | 四川云达科技有限公司 | The intelligent gas valve of two-way conisphere type |
| CN109114065A (en) * | 2018-08-22 | 2019-01-01 | 天津大学 | A kind of sealing device for fast press brake piston |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201963913U (en) | Taper piston for valve | |
| CN105736713A (en) | Valve element assembly and stop valve | |
| CN201902549U (en) | Novel sealing structure for ultrahigh pressure vessel | |
| CN201963898U (en) | Middle-high voltage taper sealing stepwise direct action solenoid valve | |
| CN205715698U (en) | A kind of stop valve | |
| CN203868213U (en) | Variable damping gas spring | |
| CN103883742B (en) | The ultra-high pressure stopped valve of a kind of hydraulic control | |
| CN202349340U (en) | Stop valve | |
| CN203948668U (en) | Cage equilibrium valve | |
| CN201964001U (en) | Air nozzle type tapered piston for valve | |
| CN204175973U (en) | Liquid-filling valve and liquid-filling valve system | |
| CN201672180U (en) | Leak-proof hydraulic joint | |
| CN210219314U (en) | Oil-free linear inflation compressor | |
| CN204372391U (en) | A kind of pressure test pipeline conversion adapter | |
| CN204942525U (en) | A kind of pressurized container | |
| CN204610924U (en) | A kind of fixing ball valve | |
| CN204587594U (en) | A kind of small package barrelling drawing mechanism | |
| CN208719371U (en) | Easily speed shut-off valve | |
| CN207437784U (en) | A kind of loading valve | |
| CN204878732U (en) | Axial press the sealing device | |
| CN104307957B (en) | Punch pin for internal high pressure forming | |
| CN207261345U (en) | A kind of integrated hydraulic control cylinder | |
| CN203880077U (en) | Bracket sealing device for liquid medium large-diameter high-pressure container | |
| CN202673832U (en) | High-performance piston cylinder | |
| CN203431275U (en) | Servo valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20140318 |