CN206268587U - A kind of metallic valve stem c-type circle sealing structure - Google Patents
A kind of metallic valve stem c-type circle sealing structure Download PDFInfo
- Publication number
- CN206268587U CN206268587U CN201621219967.XU CN201621219967U CN206268587U CN 206268587 U CN206268587 U CN 206268587U CN 201621219967 U CN201621219967 U CN 201621219967U CN 206268587 U CN206268587 U CN 206268587U
- Authority
- CN
- China
- Prior art keywords
- type circle
- stuffing box
- valve rod
- valve stem
- 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.)
- Expired - Fee Related
Links
Abstract
A kind of metallic valve stem c-type circle sealing structure, is related to a kind of sealing structure of valve, includes stuffing box, and be 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：At least one set is provided with described packing groove 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 fastener and stuffing box（1）Connection.C-type metal seal realizes that the sealing of valve rod is accomplished as filler, valve is applied to the special technique fields such as burn into irradiation, freedom from repairs.
Description
Technical field
The utility model is related to a kind of sealing structure of valve, and in particular to close between the valve rod and stuffing box of valve
Seal structure improvement aspect.
Background technology
At present, in known valve stem seal technology, filler and seal at valve stem seal are substantially all flexible
The nonmetallic materials such as graphite, tetrafluoroethene, rubber, and realize not having also for valve stem seal as filler with metal c-type circle.This
Because the good seal performance of nonmetallic encapsulant, it is easy to seal, general operating mode is suitable for using；But irradiated for burn into,
It is not allow the 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.
Utility model content
Technical problem to be solved in the utility model is there is valve rod for being not allow for the valve of nonmetallic material
The poor technical deficiency of sealing structure sealing effectiveness between stuffing box, and propose a kind of metallic valve stem c-type circle sealing structure.
Be to solve the technical problem that is proposed of the utility model, the technical scheme for using for:
A kind of metallic valve stem c-type circle sealing structure, includes stuffing box, and be 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：At least one set of set is provided with described packing groove
It is connected on 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）, fill out
Hopper top is provided with for filler pressing sleeve（5）The hold-down grid of pressure（6）, hold-down grid（6）By fastener and stuffing box
（1）Connection.
Included as the technical scheme to the further restriction of the utility model：
C-type metal seal described in every group includes an outward opening metal c-type circle being stacked（3）With one in open
Mouth metal 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 is 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 fastener 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.
The beneficial effects of the utility model are：The utility model is socketed in valve rod in packing groove using at least one set（2）
C-type metal seal as the gap between airtight and watertight padding sealed valve stem and stuffing box, corresponding valve is applied to
The special technique fields such as burn into irradiation, freedom from repairs.C-type metal seal described in every group includes an external-open being stacked
Mouth metal c-type circle（3）With an inner opening metal c-type circle（4）, good sealing effect, to valve rod（2）Frictional resistance it is small.
Brief description of the drawings
Fig. 1 is the new front cross-sectional structural representation of the present invention；
Fig. 2 is mplifying structure schematic diagrams of the Fig. 1 at A.
In figure：1- stuffing boxes；2- valve rods；3- outward opening metal c-type circles；4- inner opening metal c-type circles；5- filler pressing sleeves；
6- hold-down grids；7- disk springs；8- screws.
Specific embodiment
Structure of the present utility model is made further below in conjunction with accompanying drawing and the preferred specific embodiment of the utility model
Explanation.
Shown in referring to Figures 1 and 2, the utility model includes stuffing box 1, and is interspersed in the valve rod on stuffing box 1
2, valve rod 2 can be rotated freely relative to stuffing box 1, and the valve stem passage wall of stuffing box 1 is provided with packing groove；It is provided with packing groove
At least one set is socketed in the c-type metal seal 3,4 on valve rod 2, and metal seal 3,4 is provided with and is socketed in filling out on valve rod 2
Material gland 5, stuffing box top is provided with the hold-down grid 6 for being pressed to filler pressing sleeve 5, and hold-down grid 6 passes through fastener and fills out
Hopper 1 is connected.That is to say in the presence of fastener, hold-down grid 6 and filler pressing sleeve 5, the conduct of c-type metal seal 3,4 is filled out
Material is placed in packing groove, realizes the effect that the gap between valve rod 2 and stuffing box 1 is sealed.Filler pressing sleeve 5 and hold-down grid
6 faying face is sphere, and sphere makes hold-down grid 6 have from alignment function.
C-type metal seal described in every group includes the outward opening metal c-type circle 3 and an inner opening being stacked
Metal c-type circle 4；That is to say in packing groove each outward opening metal c-type circle 3 and inner opening metal c-type circle 4 using alternately point for point
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, with certain elasticity.
Described outward opening metal c-type circle 3 and the line footpath section preferred scheme of inner opening metal c-type circle 4 are more than to be
The circular arc of semicircle.
In order to realize better seal effect, preferred scheme is included：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
Category c-type circle 4 is fitted 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 case hardness HRC >=50 of valve rod 2.Described valve
Surface roughness Ra≤0.2 μm of bar 2, packing groove inner wall surface roughness Ra≤0.4 μm of described filler case 1.
In order to lift reliability of the present utility model, it is to avoid after a period of time, sealing effectiveness weakens, described fastening
Part includes screw 8 and disk spring 7；Screw 8 is through the bonding pad case 1 of hold-down grid 6, on the socket screw 8 of disk spring 7, position
Between the screw head and hold-down grid 6 of screw 8.Quantity >=5 of disk spring 7, screw 8 is screwed into certain torque, makes following C
Type metal seal is compressed all the time.After long-time use, even if c-type metal seal slightly has loosening, disk spring 7 also can be to it
Compensate.
Claims (7)
1. a kind of metallic valve stem c-type circle sealing structure, includes stuffing box, and be 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：At least one set is provided with 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 fastener 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
Category c-type circle（3）With inner opening metal c-type circle（4）Line footpath section be 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
Category 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
Interference fit is between wall, the magnitude of interference is 0.08mm ~ 0.11mm.
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 fastener bag
Screw is included（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 |
|---|---|---|---|
| CN201621219967.XU CN206268587U (en) | 2016-11-14 | 2016-11-14 | A kind of metallic valve stem c-type circle sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621219967.XU CN206268587U (en) | 2016-11-14 | 2016-11-14 | A kind of metallic valve stem c-type circle sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206268587U true CN206268587U (en) | 2017-06-20 |
Family
ID=59040160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621219967.XU Expired - Fee Related CN206268587U (en) | 2016-11-14 | 2016-11-14 | A kind of metallic valve stem c-type circle sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206268587U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402476A (en) * | 2016-11-14 | 2017-02-15 | 东阀门制造（南通）有限公司 | Valve rod metal C-shaped ring sealing structure |
-
2016
- 2016-11-14 CN CN201621219967.XU patent/CN206268587U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402476A (en) * | 2016-11-14 | 2017-02-15 | 东阀门制造（南通）有限公司 | Valve rod metal C-shaped ring sealing structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207064659U (en) | A kind of three eccentricity hard seal butterfly valve | |
| CN206268587U (en) | A kind of metallic valve stem c-type circle sealing structure | |
| CN106402476A (en) | Valve rod metal C-shaped ring sealing structure | |
| CN204140974U (en) | A kind of screw down nonreturn valve | |
| CN203115278U (en) | Metal ring sealing stuffing box | |
| CN208010947U (en) | Triangle circle dual-seal butterfly valve | |
| CN203757051U (en) | Ball valve specially used for high-temperature steam | |
| CN203703189U (en) | Novel elastic seal gas gate valve capable of being connected with PE pipe | |
| CN205226446U (en) | Low moment of torsion ball valve with thrust pad | |
| CN201802905U (en) | Three-plate ball valve without dead angles | |
| CN104121417A (en) | Combined type padding structure | |
| CN201013935Y (en) | Selftightening type gate valve | |
| CN205078907U (en) | Three formula double containment ball valves | |
| CN203549006U (en) | Novel instrument three-valve set | |
| CN204213363U (en) | High pressure butterfly valve | |
| CN218000474U (en) | Ball valve with sealing structure | |
| CN207486104U (en) | High platform flanged ball valve | |
| CN205118290U (en) | Gate valve | |
| CN208634409U (en) | A kind of needle valve | |
| CN204828913U (en) | Pressure is from sealing gate valve | |
| CN202402694U (en) | Hard sealing ball valve seat sealing device suitable for high temperature | |
| CN206468818U (en) | New low pressure self-sealing structure Y-shaped cut-off valve of divulging a secret | |
| CN204852410U (en) | Sluice valve | |
| CN205101659U (en) | Packing structure and ball valve | |
| CN204592377U (en) | Face the double sealing structure of hydrogen harsh operating mode ball valve assembling valve rod auxiliary hole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 Termination date: 20201114 |