CN204153306U - Stuffing box for gate valve sealing configuration - Google Patents
Stuffing box for gate valve sealing configuration Download PDFInfo
- Publication number
- CN204153306U CN204153306U CN201420567700.4U CN201420567700U CN204153306U CN 204153306 U CN204153306 U CN 204153306U CN 201420567700 U CN201420567700 U CN 201420567700U CN 204153306 U CN204153306 U CN 204153306U
- Authority
- CN
- China
- Prior art keywords
- stuffing box
- filler
- gland
- valve
- valve gap
- 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
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- Details Of Valves (AREA)
- Sealing Devices (AREA)
Abstract
The utility model stuffing box for gate valve sealing configuration, comprise valve gap, described valve gap is provided with gland, be provided with stuffing box in described valve gap, be provided with filler in described stuffing box, described gland is provided with the projection compressing filler, valve rod is arranged in valve gap, valve rod is through filler and gland, and the vertical cross-section of described stuffing box is tapered, and stuffing box is greater than the end face away from gland near the end face of gland.When gland compresses filler, because the vertical cross-section of stuffing box is tapered, filler is not only subject to downward pressure, also because of the effect of taper stuffing box, be subject to the power of lateral extrusion, make filler and valve rod close contact, play good seal action, thus stop medium to be leaked by stuffing box.
Description
Technical field
The utility model relates to a kind of sealing configuration of valve, is specifically related to a kind of stuffing box for gate valve sealing configuration.
Background technique
Along with the develop rapidly of science and technology and improving constantly of petroleum industry level, more and more higher to the sealing requirements of valve.Valve, once leak, will cause serious consequence.The leakage of valve have interior leakage and leak outside point.Interior leakage betides on the sealing pair of valve seat and closure member, leaks outside, and occurs on the sealing pair of valve stem seal and adpting flange.Cause external leakage because have, 1, packing seal only pressured lid axial force is applied to it, then produce radial direction compressive deformation sealing valve rod, prevent medium from leaking.2, filler shape is rectangle, analyzes from actual service condition, and anti-extrusion, wear-resistant ability of rectangular filler restricts mutually, and sealing effect is poor.3, filler generally adopts asbestos yarn braiding or expanded graphite to manufacture, and have good self lubricity and thermal conductivity, friction factor is little, but elasticity is poor, and wearing and tearing post-compensation poor-performing, sealing effect is not ideal enough.4, valve gap stuffing box inner chamber adopts cylindrical, and can not ensure to be installed in Seal cage by filler abreast, filler is skewness around valve rod, and be easily squeezed generation eccentric wear, reduces the working life of filler.
Model utility content
The purpose of this utility model is to provide a kind of stuffing box for gate valve sealing configuration, improves existing sealing configuration, enables filler sealed valve stem better, prevents medium from leaking.
For achieving the above object, the technical solution of the utility model is: stuffing box for gate valve sealing configuration, comprise valve gap, described valve gap is provided with gland, is provided with stuffing box in described valve gap, filler is provided with in described stuffing box, described gland is provided with the projection compressing filler, and valve rod is arranged in valve gap, and valve rod is through filler and gland, the vertical cross-section of described stuffing box is tapered, and stuffing box is greater than the end face away from gland near the end face of gland.
When adopting technique scheme, when gland compresses filler, because the vertical cross-section of stuffing box is tapered, filler is not only subject to downward pressure, also because of the effect of taper stuffing box, be subject to the power of lateral extrusion, make filler and valve rod close contact, play good seal action, thus stop medium to be leaked by stuffing box.
Further, described stuffing box along valve rod axially twist.Spirality can increase filler and valve rod close contact degree better, improves the performance of sealing.
Further, described filler is made up of oil resistant rubber, bearing bed and infantees.Oil resistant rubber makes filler softness, has elasticity, increases compression rebound rate.Bearing bed has higher intensity and good saturating machine, the oiling agent lost in timely additional fillers.Infantees is compounded to form folder cloth oil resistant rubber together with oil resistant rubber, has higher wear resistance and intensity.
Further, described gland and valve gap are bolted.With bolts being convenient to is dismantled and is changed filler.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the structural representation of the utility model stuffing box for gate valve sealing configuration embodiment.
Embodiment
As shown in Figure 1, the utility model stuffing box for gate valve sealing configuration, comprises valve gap 1, and valve gap 1 is provided with gland 2, is provided with stuffing box 4 in valve gap 1, is provided with filler 3 in stuffing box 4, and gland 2 is provided with the lug boss compressing filler 3.Valve rod 5 is arranged in valve gap 1, and valve rod 5 is through filler 3 and gland 2, and the vertical cross-section of stuffing box 4 is tapered, and stuffing box 4 is greater than the end face away from gland 2 near the end face of gland 2.Stuffing box 4 is designed to the structure with tapering.When gland 2 compresses filler, filler 3 is not only subject to downward pressure, also because of the effect of taper stuffing box 4, is subject to the power of lateral extrusion, makes filler 3 and valve rod 5 close contact, plays good seal action, thus stops medium to be leaked by stuffing box 4.
Filler 3 is made up of oil resistant rubber, bearing bed and infantees.When gland 2 compresses filler 3, airtight and watertight padding 3 axis and radial direction are deformed, is close to valve rod 5 and Seal cage inner wall surface.Filler 3 spiral winding and Seal cage inwall has certain tapering, therefore only needs a less axial pressing force can produce larger sealing force.The performance that the oil resistant rubber of filler 3 internal layer makes it obtain softness, has elasticity, compression rebound rate is large.Middle bearing bed adopts the cotton of wire rope core structure, and it has higher intensity and good saturating machine, the oiling agent lost in timely additional fillers.Outer employing canvas, is compounded to form folder cloth oil resistant rubber, has higher wear resistance and intensity together with oil resistant rubber.
Above-described is only preferred implementation of the present utility model; should be understood that; for a person skilled in the art; under the prerequisite not departing from the utility model structure; some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.
Claims (4)
1. stuffing box for gate valve sealing configuration, comprise valve gap, described valve gap is provided with gland, is provided with stuffing box in described valve gap, is provided with filler in described stuffing box, described gland is provided with the projection compressing filler, valve rod is arranged in valve gap, and valve rod, through filler and gland, is characterized in that, the vertical cross-section of described stuffing box is tapered, and stuffing box is greater than the end face away from gland near the end face of gland.
2. stuffing box for gate valve sealing configuration according to claim 1, is characterized in that, described stuffing box along valve rod axially twist.
3. stuffing box for gate valve sealing configuration according to claim 1, is characterized in that, described filler is made up of oil resistant rubber, bearing bed and infantees.
4. stuffing box for gate valve sealing configuration according to claim 1, is characterized in that, described gland and valve gap are bolted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420567700.4U CN204153306U (en) | 2014-09-29 | 2014-09-29 | Stuffing box for gate valve sealing configuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420567700.4U CN204153306U (en) | 2014-09-29 | 2014-09-29 | Stuffing box for gate valve sealing configuration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204153306U true CN204153306U (en) | 2015-02-11 |
Family
ID=52511421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420567700.4U Expired - Fee Related CN204153306U (en) | 2014-09-29 | 2014-09-29 | Stuffing box for gate valve sealing configuration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204153306U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542970A (en) * | 2016-06-23 | 2018-01-05 | 天津市滨海华义阀门有限公司 | The sealing structure of gate valve rod |
-
2014
- 2014-09-29 CN CN201420567700.4U patent/CN204153306U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542970A (en) * | 2016-06-23 | 2018-01-05 | 天津市滨海华义阀门有限公司 | The sealing structure of gate valve rod |
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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: 20150211 Termination date: 20150929 |
|
| EXPY | Termination of patent right or utility model |