CN101713475A - Dual valve shaft sealing device - Google Patents
Dual valve shaft sealing device Download PDFInfo
- Publication number
- CN101713475A CN101713475A CN200910232816A CN200910232816A CN101713475A CN 101713475 A CN101713475 A CN 101713475A CN 200910232816 A CN200910232816 A CN 200910232816A CN 200910232816 A CN200910232816 A CN 200910232816A CN 101713475 A CN101713475 A CN 101713475A
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- China
- Prior art keywords
- valve shaft
- sealing device
- valve body
- dual
- sealing
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- 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.)
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Abstract
The invention discloses a simple and reliable dual valve shaft sealing device, which comprises a valve body in which a valve shaft is arranged; the upper end of the valve body is provided with a sealing cavity; the upper end of the valve shaft is provided with a stuffing gland which is matched and fixed with a nut through a stud and then arranged at the upper end of the valve body; the lower end of the stuffing gland is arranged in the sealing cavity; stuffing is arranged at the lower end of a mounting cavity; the end face at the lower end of the stuffing gland, which contacts the stuffing, is provided with a sealing groove; the inside of the sealing groove is provided with an O-shaped sealing ring matched therewith; and the O-shaped sealing ring is sleeved on the valve shaft. The dual valve shaft sealing device has the advantage that: the dual valve shaft sealing device adopts a dual valve shaft sealing structure to effectively stop the phenomenon that a medium in a pipeline is leaked along the axial direction of the valve shaft, and has the advantages of simple structure, convenient operation to make the running of the valve shaft safe and reliable.
Description
Technical field
The present invention relates to a kind of valve, relate in particular to valve shaft sealing device in a kind of valve.
Background technique
Packing seal is adopted in the valve shaft of valve sealing at present mostly, as oil immersion packing, Expanded graphite, building rubber compound stuffing box packing etc., but in the using process of valve, the pretightening force deficiency that Gland often occurs, pipeline medium occurs along valve shaft axial leakage phenomenon, need the frequent walkaround inspection of attendant.Then become major safety risks if pipeline medium is inflammable, toxic gas, stopped valve shaft and leak to have become and reduce valve regular maintenance, the active demand of safe operation.
Summary of the invention
Technical problem to be solved by this invention is: a kind of simple, reliable dual valve shaft sealing device is provided.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: dual valve shaft sealing device, comprise: valve body, in valve body, be provided with valve shaft, upper end at valve body is provided with Seal cage, upper end at valve shaft is provided with filling gland, filling gland cooperatively interacts by stud and nut and is fixedly installed on the upper end of valve body, the lower end of filling gland is arranged in the Seal cage, be provided with filler in the lower end that cavity is installed, the end face that described filling gland lower end contacts with filler is provided with seal groove, is provided with the O-ring seals that cooperatively interacts with it in seal groove, and O-ring seals is set on the valve shaft.
Advantage of the present invention is: the dual valve shaft sealing device of said structure, adopt the dual valve shaft sealing configuration, and effectively stop the phenomenon of pipeline medium along the axial seepage of valve shaft, simple in structure, easy to operate, make valve shaft security of operation, reliable.
Description of drawings
Fig. 1 is the sectional structure schematic representation of dual valve shaft sealing device of the present invention.
Among the figure: 1, valve body, 2, valve shaft, 3, filling gland, 4, stud, 5, nut, 6, filler, 7, seal groove, 8, O-ring seals.
Embodiment
Describe particular content of the present invention in detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, dual valve shaft sealing device, comprise: valve body 1, in valve body 1, be provided with valve shaft 2, upper end at valve body 1 is provided with Seal cage, be provided with filling gland 3 in the upper end of valve shaft 2, filling gland 3 cooperatively interacts by stud 4 and nut 5 and is fixedly installed on the upper end of valve body 1, the lower end of filling gland 3 is arranged in the Seal cage, be provided with filler 6 in the lower end that cavity is installed, the end face that described filling gland 3 lower ends contact with filler 6 is provided with seal groove 7, is provided with the O-ring seals 8 that cooperatively interacts with it in seal groove 7, and O-ring seals 8 is set on the valve shaft 2.
The dual valve shaft sealing device of said structure adopts the dual valve shaft sealing configuration, effectively stops the phenomenon of pipeline medium along the axial seepage of valve shaft, and is simple in structure, easy to operate, makes valve shaft security of operation, reliable.
Claims (1)
1. dual valve shaft sealing device, comprise: valve body (1), in valve body (1), be provided with valve shaft (2), upper end at valve body (1) is provided with Seal cage, be provided with filling gland (3) in the upper end of valve shaft (2), filling gland (3) cooperatively interacts by stud (4) and nut (5) and is fixedly installed on the upper end of valve body (1), the lower end of filling gland (3) is arranged in the Seal cage, be provided with filler (6) in the lower end that cavity is installed, it is characterized in that: the end face that described filling gland (3) lower end contacts with filler (6) is provided with seal groove (7), be provided with the O-ring seals (8) that cooperatively interacts with it in seal groove (7), O-ring seals (8) is set on the valve shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910232816A CN101713475A (en) | 2009-09-24 | 2009-09-24 | Dual valve shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910232816A CN101713475A (en) | 2009-09-24 | 2009-09-24 | Dual valve shaft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101713475A true CN101713475A (en) | 2010-05-26 |
Family
ID=42417364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910232816A Pending CN101713475A (en) | 2009-09-24 | 2009-09-24 | Dual valve shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101713475A (en) |
-
2009
- 2009-09-24 CN CN200910232816A patent/CN101713475A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100526 |