CN203948771U - The two-way self-seal device of valve rod - Google Patents
The two-way self-seal device of valve rod Download PDFInfo
- Publication number
- CN203948771U CN203948771U CN201420329103.8U CN201420329103U CN203948771U CN 203948771 U CN203948771 U CN 203948771U CN 201420329103 U CN201420329103 U CN 201420329103U CN 203948771 U CN203948771 U CN 203948771U
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- China
- Prior art keywords
- veneer
- valve rod
- valve
- valve gap
- filler
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- Expired - Fee Related
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Abstract
The utility model relates to the two-way self-seal device of a kind of valve rod, belong to valve field, comprise valve gap, be provided with valve rod in valve gap, valve rod lower end connects boss, between valve rod and valve gap, be provided with filler, filler is made up of at least two group v shaped ring stacks, and v shaped ring comprises the outer veneer coordinating with valve gap, the interior veneer coordinating with valve rod, upper veneer and lower veneer, wherein, lower veneer acute angle is 60 °, and upper veneer acute angle is 61 °; Between boss and valve gap, be provided with sealing gasket, sealing gasket is arranged on boss by snap ring.The utility model is realized the axial and radial seal of valve rod and valve gap, greatly improves sealing, improves filler and valve rod enclasping force simultaneously, ensures sealing effect.
Description
Technical field
The utility model relates to the two-way self-seal device of a kind of valve rod, belongs to valve field.
Background technique
Modulating valve is widely used in the medium pipeline conveying in the industrial fields such as chemical industry, smelting, electric power, the sealing of modulating valve comprises the sealing of spool, valve gap and valve rod, for valve rod, because needs open and close operation frequently, its sealing means is motive sealing, when for high pressure or poisonous medium conveying, ensure that the excellent sealing of valve rod has very important effect.The packing seal mode of existing valve rod, mainly carries out axial sealing, and single sealing means easily causes the leakage of medium, causes poorly sealed.
Model utility content
According to above the deficiencies in the prior art, technical problem to be solved in the utility model is: provide a kind of valve rod two-way self-seal device, realize the axial and radial seal of valve rod and valve gap, greatly improve sealing, improve filler and valve rod enclasping force simultaneously, ensure sealing effect.
The two-way self-seal device of valve rod described in the utility model, comprise valve gap, in valve gap, be provided with valve rod, valve rod lower end connects boss, between valve rod and valve gap, is provided with filler, and filler is made up of at least two group v shaped ring stacks, v shaped ring comprises the outer veneer coordinating with valve gap, the interior veneer coordinating with valve rod, upper veneer and lower veneer, wherein, lower veneer acute angle is 60 °, and upper veneer acute angle is 61 °; Between boss and valve gap, be provided with sealing gasket, sealing gasket is arranged on boss by snap ring.
By being set, upper veneer acute angle angle is slightly larger than lower veneer acute angle angle, after filler pressurized, the upper veneer of below v shaped ring acts on the lower veneer of top v shaped ring, the both wings of lower veneer are opened, and respectively with valve gap, valve rod compresses, realize both axial sealings, than existing Packed 80 °～90 ° acute angles, under equal responsive to axial force, the acute angle of 60 °～61 ° can increase filler and valve rod, impacting force between valve gap, due to valve rod frequent movement, higher enclasping force can ensure the sealing effect at this place, also unsuitable too small by this acute angle angle, the too small enclasping force that easily makes is excessive, cause valve rod dyskinesia.By between boss and valve gap, sealing gasket being set, in the time that valve rod is mentioned, sealing gasket is pressed on valve gap bottom by boss, thereby avoid medium by the cavity radially entering between valve rod and valve gap, thereby greatly improved sealing effect.
Described filler below is provided with lip block, spring successively, spring lower end is against valve gap and protrudes on platform, filler top compresses by gland, gland is connected with valve gap by bolt assembly, wherein, on lip block upper end and v shaped ring, veneer angle is corresponding, and under gland lower end and v shaped ring, veneer angle is corresponding, by pre-pressing spring, make filler pressurized form sealing surface.
The outer veneer of described v shaped ring is cylndrical surface, and in it, veneer is conical surface, and outer veneer is static seal face, can adopt cylndrical surface, and interior veneer is motive sealing face, adopts conical surface to make wearing part auto-compensation, improves sealing life.
Described v shaped ring is provided with 4～6 groups.
Described v shaped ring is that material is PTFE.
Described boss is provided with draw-in groove, and sealing gasket is arranged in draw-in groove, and its inner ring clamps by snap ring.
Compared with prior art, the beneficial effect the utlity model has is:
It is 60 ° by the lower veneer acute angle that v shaped ring is set, upper veneer acute angle is 61 °, make veneer acute angle angle be slightly larger than lower veneer acute angle angle, after filler pressurized, the upper veneer of below v shaped ring acts on the lower veneer of top v shaped ring, the both wings of lower veneer are opened, and compress with valve gap, valve rod respectively, realize both axial sealings, increase the impacting force between filler and valve rod, valve gap, ensure the enclasping force between filler and valve rod, ensure sealing effect; By between boss and valve gap, sealing gasket being set, in the time that valve rod is mentioned, sealing gasket is pressed on valve gap bottom by boss, realizes radial seal, thereby greatly improved sealing effect; The outer veneer that v shaped ring is set is cylndrical surface, and interior veneer is conical surface, and making after the wearing and tearing of interior veneer can auto-compensation, improves sealing life.
Brief description of the drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is filling-material structure schematic diagram;
Fig. 3 is v shaped ring structural representation.
In figure: 1, boss; 2, valve gap; 3, sealing gasket; 4, spring; 5, lip block; 6, filler; 7, gland; 8, valve rod; 9, bolt assembly; 10, snap ring; 61, v shaped ring; 611, outer veneer; 612, upper veneer; 613, interior veneer; 614, lower veneer.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
As shown in Figures 1 to 3, the two-way self-seal device of this valve rod comprises valve gap 2, in valve gap 2, be provided with valve rod 8, valve rod 8 lower ends connect boss 1, between valve rod 8 and valve gap 2, are provided with filler 6, and filler 6 belows are provided with lip block 5, spring 4 successively, spring 4 lower ends are against valve gap 2 and protrude on platform, elastic force by spring 4 compresses filler 6 belows, and filler 6 tops compress by gland 7, and gland 7 is connected with valve gap 2 by bolt assembly 9.Filler 6 is made up of at least two group v shaped ring 61 stacks, 4～6 groups of operated by rotary motion, v shaped ring 61 adopts PTFE material, wear resistance is good, it comprises the outer veneer 611 coordinating with valve gap 2, the interior veneer 613, upper veneer 612 and the lower veneer 614 that coordinate with valve rod 8, and wherein, lower veneer 614 acute angles are 60 °, upper veneer 613 acute angles are 61 °, make veneer acute angle angle be slightly larger than lower veneer acute angle angle.The outer veneer 611 of filler 6 is cylndrical surface, and in it, veneer 613 is conical surface, and outer veneer 611 is static seal face, can adopt cylndrical surface, and interior veneer 613 is motive sealing face, adopts conical surface to make wearing part auto-compensation, improves sealing life.Between boss 1 and valve gap 2, be provided with sealing gasket 3, boss 1 is provided with draw-in groove, and sealing gasket 3 is arranged in draw-in groove, and its inner ring clamps by snap ring 10.
It is 60 ° by lower veneer 614 acute angles that v shaped ring 61 is set, upper veneer 612 acute angles are 61 °, make veneer 612 acute angle angles be slightly larger than lower veneer 614 acute angle angles, after filler 6 pressurizeds, the upper veneer 612 of below v shaped ring 61 acts on the lower veneer 614 of top v shaped ring 61, the both wings of lower veneer 614 are opened, and compress with valve gap 2, valve rod 8 respectively, realize both axial sealings, increase the impacting force between filler 6 and valve rod 8, valve gap 2, ensure the enclasping force between filler 6 and valve rod 8, ensure sealing effect; By between boss 1 and valve gap 2, sealing gasket 3 being set, in the time that valve rod 8 is mentioned, sealing gasket 3 is pressed on valve gap 2 bottoms by boss 1, realizes radial seal, thereby greatly improved sealing effect; The outer veneer 611 that v shaped ring 61 is set is cylndrical surface, and interior veneer 613 be conical surface, and making after interior veneer 613 wearing and tearing can auto-compensation, raising sealing life.
Claims (6)
1. the two-way self-seal device of valve rod, comprise valve gap (2), in valve gap (2), be provided with valve rod (8), valve rod (8) lower end connects boss (1), between valve rod (8) and valve gap (2), be provided with filler (6), it is characterized in that: filler (6) is made up of at least two group v shaped ring (61) stacks, v shaped ring (61) comprises the outer veneer (611) coordinating with valve gap (2), the interior veneer (613) coordinating with valve rod (8), upper veneer (612) and lower veneer (614), wherein, lower veneer (614) acute angle is 60 °, upper veneer (613) acute angle is 61 °, between boss (1) and valve gap (2), be provided with sealing gasket (3), sealing gasket (3) is arranged on boss (1) by snap ring (10).
2. the two-way self-seal device of valve rod according to claim 1, it is characterized in that: described filler (6) below is provided with lip block (5), spring (4) successively, spring (4) lower end is against valve gap (2) and protrudes on platform, filler (6) top compresses by gland (7), and gland (7) is connected with valve gap (2) by bolt assembly (9).
3. the two-way self-seal device of valve rod according to claim 1, is characterized in that: the outer veneer (611) of described v shaped ring (61) is cylndrical surface, and in it, veneer (613) is conical surface.
4. the two-way self-seal device of valve rod according to claim 3, is characterized in that: described v shaped ring (61) is provided with 4～6 groups.
5. according to the two-way self-seal device of the valve rod described in claim 1 or 3, it is characterized in that: described v shaped ring (61) for material be PTFE.
6. the two-way self-seal device of valve rod according to claim 1, is characterized in that: described boss (1) is provided with draw-in groove, and sealing gasket (3) is arranged in draw-in groove, and its inner ring is by snap ring (10) clamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420329103.8U CN203948771U (en) | 2014-06-19 | 2014-06-19 | The two-way self-seal device of valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420329103.8U CN203948771U (en) | 2014-06-19 | 2014-06-19 | The two-way self-seal device of valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948771U true CN203948771U (en) | 2014-11-19 |
Family
ID=51890807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420329103.8U Expired - Fee Related CN203948771U (en) | 2014-06-19 | 2014-06-19 | The two-way self-seal device of valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203948771U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043323A (en) * | 2019-12-31 | 2020-04-21 | 浙江大学 | Valve sealing structure capable of reducing abrasion and method thereof |
-
2014
- 2014-06-19 CN CN201420329103.8U patent/CN203948771U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043323A (en) * | 2019-12-31 | 2020-04-21 | 浙江大学 | Valve sealing structure capable of reducing abrasion and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20190619 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |