CN106402476A - Valve rod metal C-shaped ring sealing structure - Google Patents
Valve rod metal C-shaped ring sealing structure Download PDFInfo
- Publication number
- CN106402476A CN106402476A CN201610997783.4A CN201610997783A CN106402476A CN 106402476 A CN106402476 A CN 106402476A CN 201610997783 A CN201610997783 A CN 201610997783A CN 106402476 A CN106402476 A CN 106402476A
- Authority
- CN
- China
- Prior art keywords
- type circle
- valve rod
- metal
- stuffing box
- sealing structure
- 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.)
- Pending
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Classifications
-
- 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a valve rod metal C-shaped ring sealing structure and relates to a sealing structure of a valve. The valve rod metal C-shaped ring sealing structure comprises a stuffing box and a valve rod (2) inserted in the stuffing box (1), and a stuffing groove is formed in the channel wall of the valve rod of the stuffing box (1). The valve rod metal C-shaped ring sealing structure is characterized in that the stuffing groove is internally provided with at least one set of C-shaped metal sealing pieces connected to the valve rod (2) in a sleeving mode; the metal sealing pieces are provided with a stuffing pressure sleeve (5) connected to the valve rod (2) in a sleeving mode; and a stuffing pressure plate (6) used for applying pressure to the stuffing pressure sleeve (5) is arranged above the stuffing box and is connected with the stuffing box (1) through fasteners. The C-shaped metal sealing pieces serves as stuffing materials to achieve sealing of the valve rod, so that the valve can be applied to corrosion, irradiation and maintenance-free special technical fields and the like.
Description
Technical field
The present invention relates to a kind of sealing structure of valve is and in particular to the sealing between the valve rod and stuffing box of valve is tied
Structure improvement aspect.
Background technology
At present, in known valve stem seal technology, the filler at valve stem seal and seal are all substantially flexible
The nonmetallic materials such as graphite, tetrafluoroethene, rubber, and realize also not having of valve stem seal as filler with metal c-type circle.This
It is because the good seal performance of nonmetallic encapsulant it is easy to seal, general operating mode is suitable for using；But for burn into irradiation,
It is not allow valve to have nonmetallic material to occur in the special technique such as freedom from repairs field and some systems, therefore there is valve
Sealing structure sealing effectiveness between valve rod and stuffing box is poor.
Content of the invention
The technical problem to be solved is that the valve being not allow for nonmetallic material is had to valve rod and fills out
The technical deficiency of the sealing structure sealing effectiveness difference between hopper, and a kind of metallic valve stem c-type circle sealing structure is proposed.
For solving technical problem proposed by the invention, the technical scheme of employing is:
A kind of metallic valve stem c-type circle sealing structure, includes stuffing box, and is interspersed in stuffing box（1）On valve rod（2）, fill out
Hopper（1）Valve stem passage wall be provided with packing groove；It is characterized in that：It is provided with least one set in described packing groove and be socketed in valve
Bar（2）On c-type metal seal, metal seal is provided with and is socketed in valve rod（2）On filler pressing sleeve（5）, on stuffing box
Side is provided with for filler pressing sleeve（5）The hold-down grid of pressure（6）, hold-down grid（6）By securing member and stuffing box（1）Even
Connect.
Echnical solution as defined further in the present invention includes：
C-type metal seal described in every group includes an outward opening metal c-type circle being stacked（3）With an inner opening gold
Belong to c-type circle（4）.
Described outward opening metal c-type circle（3）With inner opening metal c-type circle（4）Line footpath section be more than semicircle
Circular arc.
Described outward opening metal c-type circle（3）With valve rod（2）Palette；Inner opening metal c-type circle（4）With stuffing box
（1）Packing groove inner wall sealing laminating；Outward opening metal c-type circle（3）With valve rod（2）Between, and inner opening metal c-type circle（4）
With stuffing box（1）Packing groove inwall between be interference fit, the magnitude of interference be 0.08mm ~ 0.11mm.
Described valve rod（2）Case hardness HRC >=50.
Described valve rod（2）Surface roughness Ra≤0.2 μm, described filler case（1）Packing groove inner wall surface roughness
Ra≤0.4μm.
Described securing member includes screw（8）And disk spring（7）；Screw（8）Through hold-down grid（6）Bonding pad case
（1）, disk spring（7）Socket screw（8）On, positioned at screw（8）Screw head and hold-down grid（6）Between.
Beneficial effects of the present invention are：The present invention is socketed in valve rod using least one set in packing groove（2）C-type metal
Seal as the gap between airtight and watertight padding sealed valve stem and stuffing box, enable corresponding valve be applied to burn into irradiation,
The special technique such as freedom from repairs field.C-type metal seal described in every group includes an outward opening metal c-type circle being stacked
（3）With an inner opening metal c-type circle（4）, good sealing effect, to valve rod（2）Frictional resistance little.
Brief description
Fig. 1 is the new front cross-sectional structural representation of the present invention；
Fig. 2 is mplifying structure schematic diagram at A for the Fig. 1.
In figure：1- stuffing box；2- valve rod；3- outward opening metal c-type circle；4- inner opening metal c-type circle；5- filler pressing sleeve；
6- hold-down grid；7- disk spring；8- screw.
Specific embodiment
Below in conjunction with accompanying drawing and currently preferred specific embodiment, the structure of the present invention is further described.
Shown in seeing figures.1.and.2, the present invention includes stuffing box 1, and is interspersed in the valve rod 2 on stuffing box 1, valve
Bar 2 can rotate freely with respect to stuffing box 1, and the valve stem passage wall of stuffing box 1 is provided with packing groove；It is provided with least in packing groove
The c-type metal seal 3,4 that one group is socketed on valve rod 2, metal seal 3,4 is provided with the filler pressure being socketed on valve rod 2
Set 5, is provided with the hold-down grid 6 for pressing to filler pressing sleeve 5 above stuffing box, hold-down grid 6 passes through securing member and stuffing box 1
Connect.That is to say that, in the presence of securing member, hold-down grid 6 and filler pressing sleeve 5, c-type metal seal 3,4 is placed in as filler
In packing groove, realize the effect that the gap between valve rod 2 and stuffing box 1 is sealed.Filler pressing sleeve 5 and the knot of hold-down grid 6
Conjunction face is sphere, and sphere makes hold-down grid 6 have from alignment function.
C-type metal seal described in every group includes an outward opening metal c-type circle 3 being stacked and an inner opening
Metal c-type circle 4；That is to say that in packing groove, each outward opening metal c-type circle 3 and inner opening metal c-type circle 4 adopt alternately to divide to replace and divide
Cloth.The concrete structure of outward opening metal c-type circle 3 and inner opening metal c-type circle 4 is line footpath section letter C font, using metal material
Matter, has certain elasticity.
The line footpath section preferred version of described outward opening metal c-type circle 3 and inner opening metal c-type circle 4 is to be to be more than
The circular arc of semicircle.
In order to realize better seal effect, preferred scheme includes：Described outward opening metal c-type circle 3 and valve rod 2
Palette；It is interference fit between outward opening metal c-type circle 3 and valve rod 2, the magnitude of interference is 0.08mm ~ 0.11mm.Inner opening gold
Belong to c-type circle 4 to fit with the packing groove inner wall sealing of stuffing box 1；The packing groove inwall of inner opening metal c-type circle 4 and stuffing box 1 it
Between be also interference fit, the magnitude of interference is similarly 0.08mm ~ 0.11mm.Described valve rod 2 case hardness HRC >=50.Described valve
Bar 2 surface roughness Ra≤0.2 μm, packing groove inner wall surface roughness Ra≤0.4 μm of described filler case 1.
In order to lift the reliability of the present invention, it is to avoid after a period of time, sealing effectiveness weakens, described securing member bag
Screw 8 and disk spring 7 are included；Through hold-down grid 6 bonding pad case 1, disk spring 7 is socketed on screw 8 screw 8, positioned at spiral shell
Between the screw head of nail 8 and hold-down grid 6.Disk spring 7 quantity >=5, are screwed into screw 8 with certain torque, make following c-type gold
Belong to seal to compress all the time.After long-time use, even if c-type metal seal is slightly loosening, disk spring 7 also can be carried out to it
Compensate.
Claims (7)
1. a kind of metallic valve stem c-type circle sealing structure, includes stuffing box, and is interspersed in stuffing box（1）On valve rod（2）,
Stuffing box（1）Valve stem passage wall be provided with packing groove；It is characterized in that：It is provided with least one set in described packing groove to be socketed in
Valve rod（2）On c-type metal seal, metal seal is provided with and is socketed in valve rod（2）On filler pressing sleeve（5）, stuffing box
Top is provided with for filler pressing sleeve（5）The hold-down grid of pressure（6）, hold-down grid（6）By securing member and stuffing box（1）Even
Connect.
2. a kind of metallic valve stem c-type circle sealing structure according to claim 1 it is characterised in that：C-type metal described in every group
Seal includes an outward opening metal c-type circle being stacked（3）With an inner opening metal c-type circle（4）.
3. a kind of metallic valve stem c-type circle sealing structure according to claim 2 it is characterised in that：Described outward opening gold
Belong to c-type circle（3）With inner opening metal c-type circle（4）Line footpath section be the circular arc more than semicircle.
4. a kind of metallic valve stem c-type circle sealing structure according to claim 2 it is characterised in that：Described outward opening gold
Belong to c-type circle（3）With valve rod（2）Palette；Inner opening metal c-type circle（4）With stuffing box（1）Packing groove inner wall sealing patch
Close；Outward opening metal c-type circle（3）With valve rod（2）Between, and inner opening metal c-type circle（4）With stuffing box（1）Packing groove in
It is interference fit, the magnitude of interference is 0.08mm ~ 0.11mm between wall.
5. a kind of metallic valve stem c-type circle sealing structure according to claim 2 it is characterised in that：Described valve rod（2）Table
Surface hardness HRC >=50.
6. a kind of metallic valve stem c-type circle sealing structure according to claim 2 it is characterised in that：Described valve rod（2）Table
Surface roughness Ra≤0.2 μm, described filler case（1）Packing groove inner wall surface roughness Ra≤0.4 μm.
7. a kind of metallic valve stem c-type circle sealing structure according to claim 1 it is characterised in that：Described securing member bag
Include screw（8）And disk spring（7）；Screw（8）Through hold-down grid（6）Bonding pad case（1）, disk spring（7）Socket spiral shell
Nail（8）On, positioned at screw（8）Screw head and hold-down grid（6）Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610997783.4A CN106402476A (en) | 2016-11-14 | 2016-11-14 | Valve rod metal C-shaped ring sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610997783.4A CN106402476A (en) | 2016-11-14 | 2016-11-14 | Valve rod metal C-shaped ring sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106402476A true CN106402476A (en) | 2017-02-15 |
Family
ID=59230691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610997783.4A Pending CN106402476A (en) | 2016-11-14 | 2016-11-14 | Valve rod metal C-shaped ring sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402476A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947071A (en) * | 2017-12-19 | 2018-04-20 | 资阳中车电气科技有限公司 | The shielding waterproof structure and installing and fixing method of a kind of high pressure junction box |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69719204D1 (en) * | 1996-10-31 | 2003-03-27 | Fisher Controls Int | RAIN VALVE WITH BEARING-FREE SPINDLE |
| CN201149099Y (en) * | 2008-01-24 | 2008-11-12 | 兰州高压阀门有限公司 | High-pressure flat plate gate valve |
| CN101451625A (en) * | 2008-12-30 | 2009-06-10 | 广东联塑市政工程管道有限公司 | Double sealing valve structure |
| CN202946757U (en) * | 2012-11-02 | 2013-05-22 | 上海工程技术大学 | Filling structure |
| CN203115278U (en) * | 2013-04-02 | 2013-08-07 | 浙江贝尔控制阀门有限公司 | Metal ring sealing stuffing box |
| CN204628625U (en) * | 2015-04-08 | 2015-09-09 | 东一阀门制造(南通)有限公司 | A kind of full-metallic hard seal ball valve |
| CN206268587U (en) * | 2016-11-14 | 2017-06-20 | 东一阀门制造(南通)有限公司 | A kind of metallic valve stem c-type circle sealing structure |
-
2016
- 2016-11-14 CN CN201610997783.4A patent/CN106402476A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69719204D1 (en) * | 1996-10-31 | 2003-03-27 | Fisher Controls Int | RAIN VALVE WITH BEARING-FREE SPINDLE |
| CN201149099Y (en) * | 2008-01-24 | 2008-11-12 | 兰州高压阀门有限公司 | High-pressure flat plate gate valve |
| CN101451625A (en) * | 2008-12-30 | 2009-06-10 | 广东联塑市政工程管道有限公司 | Double sealing valve structure |
| CN202946757U (en) * | 2012-11-02 | 2013-05-22 | 上海工程技术大学 | Filling structure |
| CN203115278U (en) * | 2013-04-02 | 2013-08-07 | 浙江贝尔控制阀门有限公司 | Metal ring sealing stuffing box |
| CN204628625U (en) * | 2015-04-08 | 2015-09-09 | 东一阀门制造(南通)有限公司 | A kind of full-metallic hard seal ball valve |
| CN206268587U (en) * | 2016-11-14 | 2017-06-20 | 东一阀门制造(南通)有限公司 | A kind of metallic valve stem c-type circle sealing structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947071A (en) * | 2017-12-19 | 2018-04-20 | 资阳中车电气科技有限公司 | The shielding waterproof structure and installing and fixing method of a kind of high pressure junction box |
| CN107947071B (en) * | 2017-12-19 | 2023-09-19 | 资阳中车电气科技有限公司 | Shielding waterproof structure of high-voltage junction box and mounting and fixing method |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |
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| RJ01 | Rejection of invention patent application after publication |