CN203857118U - Sealing device for the valve rod of spherical valve - Google Patents
Sealing device for the valve rod of spherical valve Download PDFInfo
- Publication number
- CN203857118U CN203857118U CN201420297360.8U CN201420297360U CN203857118U CN 203857118 U CN203857118 U CN 203857118U CN 201420297360 U CN201420297360 U CN 201420297360U CN 203857118 U CN203857118 U CN 203857118U
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- China
- Prior art keywords
- valve
- valve rod
- spring energy
- seal ring
- wear
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- Withdrawn - After Issue
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Abstract
The utility model discloses a sealing device for the valve rod of a spherical valve. The sealing device comprises the valve rod, a valve body, an O-shaped spring energy storage seal ring, a support ring, a V-shaped spring energy storage seal ring and a sealing gland, wherein the valve rod is rotationally mounted in the valve body and is sleeved with the sealing gland; the sealing gland is located outside the valve rod and fixedly connected with the valve body; the O-shaped spring energy storage seal ring sleeves the valve rod, the support ring and the V-shaped spring energy storage seal ring which are in seal fit with the valve body; the support ring is located between the O-shaped spring energy storage seal ring and the V-shaped spring energy storage seal ring and provided with an insert part extending into the V-shaped groove of the V-shaped spring energy storage seal ring; O-shaped seal rings are arranged between the sealing gland and the valve body and between the sealing gland and the valve rod respectively. The sealing device can improve the sealing property between the valve rod and the valve body, prolongs the service life of the valve, and ensures the sealing reliability of the valve under frequent on-off actions.
Description
Technical field
The utility model relates to a kind of valve rod sealing device, relates in particular to a kind of valve rod sealing device of ball valve.
Background technique
Conventional ball valve is comprised of valve rod and valve body, and valve rod is through the through hole of valve body.The working principle of ball valve is by rotation valve rod, to carry out the open and close of control valve, for Leakage prevention, requires to seal between valve rod and valve body.At present, the valve stem seal of most of ball valve mainly carrys out Leakage prevention by packing seal.Yet for the ball valve being applied on tank container, the frequent operating mode opening and closing can cause the wearing and tearing of filler and cause medium in tank case to external leakage, often because vibrations make packing seal, the lax leakage that causes to occur in transportation process simultaneously.
Model utility content
Technical problem to be solved in the utility model is: a kind of valve rod sealing device of ball valve is provided, and sealing device can improve the sealability between valve rod and valve body, extends the working life of valve, guarantees the sealing reliability of valve under frequent on-off action.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of valve rod sealing device of ball valve, comprises valve rod, valve body, O shape spring energy-storage seal ring, support ring, V-arrangement spring energy-storage seal ring and sealing gland; Described valve rod rotates and is installed in valve body, described sealing gland is set on valve rod, sealing gland is positioned at the outside of valve body and is fixedly connected with valve body, described O shape spring energy-storage seal ring, support ring, V-arrangement spring energy-storage ring set coordinate on valve rod and with described valve seal, described support ring is between O shape spring energy-storage seal ring and V-arrangement spring energy-storage seal ring, and this support ring is provided with the Embedded Division in the V-shaped groove that stretches into V-arrangement spring energy-storage seal ring; Institute's sealing gland is provided with O-ring seals respectively and between valve body, valve rod.
As a kind of preferred scheme, on described valve rod, be also set with the first wear-resistant sleeve and the second wear-resistant sleeve, this first wear-resistant sleeve is arranged at the interior side of O shape spring energy-storage seal ring, the outer circumferential face of this first wear-resistant sleeve coordinates with valve body, described the second wear-resistant sleeve is arranged in sealing gland, and the outer circumferential face of this second wear-resistant sleeve coordinates with sealing gland.
As a kind of preferred scheme, described the first wear-resistant sleeve and the second wear-resistant sleeve are PTFE anti-wear cover.
As a kind of preferred scheme, between described sealing gland and valve body, bolt is connected.
As a kind of preferred scheme, between described sealing gland and V-arrangement spring energy storage seal ring, be provided with spacer, on this valve rod, be provided with limited step, described spacer is sleeved on valve rod and with limited step and coordinates, and two end faces of this spacer are provided with gap respectively and between sealing gland, V-arrangement spring energy storage seal ring.
Adopted after technique scheme, effect of the present utility model is: this valve rod sealing device successively adopts O shape spring energy-storage seal ring and V-arrangement spring energy-storage seal ring to seal between valve rod and valve body, between valve rod and sealing gland, successively adopt 2 road O shape rubber seal to seal between sealing gland and valve body, this kind of structural design compared and can be improved to a great extent valve in frequent movement lower seal performance with common fillers sealing in the past, extends the working life of valve.
Again owing to being also set with the first wear-resistant sleeve and the second wear-resistant sleeve on described valve rod, this first wear-resistant sleeve is arranged at the interior side of O shape spring energy-storage seal ring, the outer circumferential face of this first wear-resistant sleeve coordinates with valve body, described the second wear-resistant sleeve is arranged in sealing gland, the outer circumferential face of this second wear-resistant sleeve coordinates with sealing gland, like this, this valve rod is not directly and valve body, sealing gland contact friction, but utilize the first wear-resistant sleeve and the second wear-resistant sleeve, improve valve stem seal reliability, avoid valve rod and valve body wearing and tearing.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the utility model embodiment's structure sectional view;
In accompanying drawing: 1. valve body; 2. valve rod; 3.O shape spring energy-storage seal ring; 4. support ring; 5.V shape spring energy-storage seal ring; 6. sealing gland; 7.O shape seal ring; 8. the first wear-resistant sleeve; 9. the second wear-resistant sleeve.
Embodiment
Below by specific embodiment, the utility model is described in further detail.
As shown in Figure 1, a kind of valve rod 2 seal arrangements of ball valve, comprise valve rod 2, valve body 1, O shape spring energy-storage seal ring 3, support ring 4, V-arrangement spring energy-storage seal ring 5 and sealing gland 6, described valve rod 2 rotates and is installed in valve body 1, described sealing gland 6 is set on valve rod 2, sealing gland 6 is positioned at the outside of valve body 1 and is bolted to connection with valve body 1, this valve rod 2 runs through sealing gland 6 and end is provided with valve rod 2 operating handles, described O shape spring energy-storage seal ring 3, support ring 4, V-arrangement spring energy-storage seal ring 5 is set on valve rod 2 and with described valve body 1 and is sealed and matched, described support ring 4 is between O shape spring energy-storage seal ring 3 and V-arrangement spring energy-storage seal ring 5, this support ring 4 is provided with the Embedded Division in the V-shaped groove that stretches into V-arrangement spring energy-storage seal ring 5, between this support ring 4 and O shape spring energy-storage seal ring 3, be provided with packing ring, and between V-arrangement spring energy-storage seal ring 5 and sealing gland 6, be provided with door, institute's sealing gland 6 is provided with O-ring seals 7 respectively and between valve body 1, valve rod 2.On described valve rod 2, be also set with the first wear-resistant sleeve 8 and the second wear-resistant sleeve 9, this first wear-resistant sleeve 8 is arranged at the interior side of O shape spring energy-storage seal ring 3, the outer circumferential face of this first wear-resistant sleeve 8 coordinates with valve body 1, described the second wear-resistant sleeve 9 is arranged in sealing gland 6, and the outer circumferential face of this second wear-resistant sleeve 9 coordinates with sealing gland 6.Described the first wear-resistant sleeve 8 and the second wear-resistant sleeve 9 are PTFE anti-wear cover.
Between described sealing gland 6 and V-arrangement spring energy storage seal ring 5, be provided with spacer, on this valve rod 2, be provided with limited step, described spacer is sleeved on valve rod and with limited step and coordinates, two end faces of this spacer are provided with gap respectively and between sealing gland 6, V-arrangement spring energy storage seal ring 5, are convenient to V-arrangement spring energy storage seal ring 5 and O shape spring energy-storage seal ring 3 endwisely slips.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction.For any related personnel who is familiar with the art, not departing under the prerequisite of the technology of the present invention essence, can also make some improvement and modification, these improvement and modification also should be considered as protection scope of the present invention.
Claims (5)
1. a valve rod sealing device for ball valve, is characterized in that: comprise valve rod, valve body, O shape spring energy-storage seal ring, support ring, V-arrangement spring energy-storage seal ring and sealing gland; Described valve rod rotates and is installed in valve body, described sealing gland is set on valve rod, sealing gland is positioned at the outside of valve body and is fixedly connected with valve body, described O shape spring energy-storage seal ring, support ring, V-arrangement spring energy-storage ring set coordinate on valve rod and with described valve seal, described support ring is between O shape spring energy-storage seal ring and V-arrangement spring energy-storage seal ring, and this support ring is provided with the Embedded Division in the V-shaped groove that stretches into V-arrangement spring energy-storage seal ring; Institute's sealing gland is provided with O-ring seals respectively and between valve body, valve rod.
2. the valve rod sealing device of a kind of ball valve as claimed in claim 1, it is characterized in that: on described valve rod, be also set with the first wear-resistant sleeve and the second wear-resistant sleeve, this first wear-resistant sleeve is arranged at the interior side of O shape spring energy-storage seal ring, the outer circumferential face of this first wear-resistant sleeve coordinates with valve body, described the second wear-resistant sleeve is arranged in sealing gland, and the outer circumferential face of this second wear-resistant sleeve coordinates with sealing gland.
3. the valve rod sealing device of a kind of ball valve as claimed in claim 2, is characterized in that: described the first wear-resistant sleeve and the second wear-resistant sleeve are PTFE anti-wear cover.
4. the valve rod sealing device of a kind of ball valve as claimed in claim 3, is characterized in that: between described sealing gland and valve body, bolt is connected.
5. the valve rod sealing device of a kind of ball valve as claimed in claim 4, it is characterized in that: between described sealing gland and V-arrangement spring energy storage seal ring, be provided with spacer, on this valve rod, be provided with limited step, described spacer is sleeved on valve rod and with limited step and coordinates, and two end faces of this spacer are provided with gap respectively and between sealing gland, V-arrangement spring energy storage seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420297360.8U CN203857118U (en) | 2014-06-05 | 2014-06-05 | Sealing device for the valve rod of spherical valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420297360.8U CN203857118U (en) | 2014-06-05 | 2014-06-05 | Sealing device for the valve rod of spherical valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203857118U true CN203857118U (en) | 2014-10-01 |
Family
ID=51606968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420297360.8U Withdrawn - After Issue CN203857118U (en) | 2014-06-05 | 2014-06-05 | Sealing device for the valve rod of spherical valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203857118U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006212A (en) * | 2014-06-05 | 2014-08-27 | 张家港富瑞特种装备股份有限公司 | Valve rod sealing device for ball valves |
-
2014
- 2014-06-05 CN CN201420297360.8U patent/CN203857118U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006212A (en) * | 2014-06-05 | 2014-08-27 | 张家港富瑞特种装备股份有限公司 | Valve rod sealing device for ball valves |
| CN104006212B (en) * | 2014-06-05 | 2016-03-02 | 张家港富瑞特种装备股份有限公司 | Valve rod sealing device of ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141001 Effective date of abandoning: 20160302 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |