CN204901046U - Stop valve seal structure - Google Patents
Stop valve seal structure Download PDFInfo
- Publication number
- CN204901046U CN204901046U CN201520501580.2U CN201520501580U CN204901046U CN 204901046 U CN204901046 U CN 204901046U CN 201520501580 U CN201520501580 U CN 201520501580U CN 204901046 U CN204901046 U CN 204901046U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- rod hole
- valve
- thread bush
- gland
- 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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Abstract
The utility model relates to the technical field of valves, a stop valve seal structure is disclosed, including establishing the valve rod hole on the valve body, the downthehole valve rod that is equipped with the liftable of valve rod, clearance fit between valve rod and the valve rod hole, stretch out outside the valve rod hole upper end of valve rod, the lower extreme in valve rod hole is equipped with annular cascaded surface, downthehole being located of valve rod is equipped with annular gap between annular cascaded surface upside position and the valve rod, be equipped with the graphite packing in the annular gap, be equipped with the support cover with valve rod clearance fit between the lower extreme of graphite packing and the annular cascaded surface, the upper end of graphite packing is equipped with the pressure cover with valve rod clearance fit, press the upper end of cover to be equipped with the flange thread bush, flange thread bush and the upper end screw thread in valve rod hole and the upper end inner wall threaded connection in valve rod hole, the lower extreme of flange thread bush contacts with pressing the cover. Therefore, the utility model discloses it is stable to have sealing performance, maintains convenient beneficial effect.
Description
Technical field
The utility model relates to valve technology field, particularly relates to a kind of stop valve sealing configuration.
Background technique
Stop valve is a kind of valve conventional in oil circuit, air-channel system, some stop valve needs high pressure resistant design, when designing, design pressure reaches 76.6MP, the valve rod of stop valve stretches out outside valve body, between valve rod and valve rod hole, this sealing requirements is fine, if sealing is unstable, so medium is easy to leak out from the gap location between valve rod and valve rod hole, the sealing configuration of high-pressure stop valve common is at present all very complicated, and easily damaged parts is more, and sealing is unstable, leakage is caused to be difficult to again seal once there is poor sealing, maintenance, maintenance inconvenience.
Model utility content
The utility model, in order to solve the aforementioned problems in the prior, provide a kind of sealability and stablizes, stop valve sealing configuration easy to maintenance.
To achieve these goals, the utility model adopts following technological scheme:
A kind of stop valve sealing configuration, comprise the valve rod hole be located on valve body, liftable valve rod is provided with in valve rod hole, Spielpassung between valve rod and valve rod hole, the upper end of valve rod is stretched out outside valve rod hole, the lower end of described valve rod hole is provided with annular step tread, between annular step tread upper lateral part position and valve rod, annular space is provided with in valve rod hole, graphite packing is provided with in annular space, the lower end of described graphite packing is provided with between annular step tread the supporting sleeve coordinated with valve lever clearance, the upper end of described graphite packing is provided with the gland coordinated with valve lever clearance, the upper end of gland is provided with flange thread bush, described flange thread bush is connected with the upper end inner thread of valve rod hole with the threaded upper ends of valve rod hole, the lower end of described flange thread bush contacts with gland.
The two ends of graphite packing are spacing respectively by supporting sleeve, gland, supporting sleeve is supported by annular step tread, flange thread bush is pressed in gland upper end, when flange thread bush is tightened, and gland extruded anisotropic graphite packing, annular space is full of after graphite packing is squeezed, thus realize stabilized seal, when the seal action of graphite packing declines, tighten flange thread bush further, graphite packing is sealed by extrusion further, easy to maintenance; Change very convenient when the seal failure of graphite packing.
As preferably, described valve body is positioned at around valve rod hole and is provided with annular boss, annular boss is provided with protecting jacket, and described protecting jacket opening end is threaded with between annular boss, is provided with stage clip between the inner bottom part of described protecting jacket and flange thread bush.Protecting jacket plays a protective role to bolt locking cover on the one hand, prevents from clashing into flange thread bush because of carelessness from the external world and causing thread damage, simultaneously stage clip supported flange thread bush, prevents flange thread bush from loosening.
As preferably, the outside of described protecting jacket is provided with some lugs, and the opening end outer periphery of protecting jacket is provided with some oiling through holes.Lug is convenient to protecting jacket and is tightened and dismantle, and protecting jacket is connected with annular boss for a long time, needs to be difficult to dismounting when taking off, and now directly in oil hole, injects oil lubrication screw thread, thus can facilitate the dismounting of protecting jacket.
As preferably, the outside that the inwall of described valve rod hole is positioned at gland is provided with spacing ladder surface, and the upper end of described gland is provided with position limiting convex ring.Along with the use of stop valve, when the position limiting convex ring on gland moves on spacing ladder surface, if now valve rod hole still leaks, represent and need to change graphite packing.
Therefore, the utility model has sealability and stablizes, beneficial effect easy to maintenance.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is A place enlarged diagram in Fig. 1.
In figure: valve body 1, valve rod hole 2, valve rod 3, annular step tread 4, annular space 5, graphite packing 6, supporting sleeve 7, gland 8, position limiting convex ring 80, flange thread bush 9, spacing ladder surface 10, annular boss 11, protecting jacket 12, stage clip 13, lug 14, oiling through hole 15.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
A kind of stop valve sealing configuration as shown in Figure 1, comprise the valve rod hole 2 be located on valve body 1, liftable valve rod 3 is provided with in valve rod hole, Spielpassung between valve rod and valve rod hole, the upper end of valve rod 3 is stretched out outside valve rod hole, as shown in Figure 2, the lower end of valve rod hole 2 is provided with annular step tread 4, between annular step tread upper lateral part position and valve rod, annular space 5 is provided with in valve rod hole, graphite packing 6 is provided with in annular space 5, the lower end of graphite packing 6 be provided with the supporting sleeve 7 coordinated with valve lever clearance between annular step tread, the upper end of graphite packing is provided with the gland 8 coordinated with valve lever clearance, the upper end of gland is provided with flange thread bush 9, described flange thread bush is connected with the upper end inner thread of valve rod hole with the threaded upper ends of valve rod hole, the lower end of flange thread bush contacts with gland, the outside that the inwall of valve rod hole 2 is positioned at gland is provided with spacing ladder surface 10, the upper end of gland 8 is provided with position limiting convex ring 80, valve body 1 is positioned at around valve rod hole and is provided with annular boss 11, annular boss is provided with protecting jacket 12, and protecting jacket opening end is threaded with between annular boss, is provided with stage clip 13 between the inner bottom part of protecting jacket and flange thread bush, the outside of protecting jacket is provided with some lugs 14, and the opening end outer periphery of protecting jacket is provided with some oiling through holes 15.
The two ends of graphite packing are spacing respectively by supporting sleeve, gland, turn flange thread bush, flange thread bush is made to compress gland, gland compresses graphite packing, is full of whole annular space, thus plays good seal action after graphite packing is squeezed, when the seal action of graphite packing declines, tighten flange thread bush further, again seal, easy to maintenance; When the position limiting convex ring on gland move to contact with spacing ladder surface time, now need to change graphite packing.Therefore, the utility model has sealability and stablizes, beneficial effect easy to maintenance.
Claims (4)
1. a stop valve sealing configuration, comprise the valve rod hole be located on valve body, liftable valve rod is provided with in valve rod hole, Spielpassung between valve rod and valve rod hole, the upper end of valve rod is stretched out outside valve rod hole, it is characterized in that, the lower end of described valve rod hole is provided with annular step tread, between annular step tread upper lateral part position and valve rod, annular space is provided with in valve rod hole, graphite packing is provided with in annular space, the lower end of described graphite packing is provided with between annular step tread the supporting sleeve coordinated with valve lever clearance, the upper end of described graphite packing is provided with the gland coordinated with valve lever clearance, the upper end of gland is provided with flange thread bush, described flange thread bush is connected with the upper end inner thread of valve rod hole with the threaded upper ends of valve rod hole, the lower end of described flange thread bush contacts with gland.
2. stop valve sealing configuration according to claim 1; it is characterized in that; described valve body is positioned at around valve rod hole and is provided with annular boss; annular boss is provided with protecting jacket; described protecting jacket opening end is threaded with between annular boss, is provided with stage clip between the inner bottom part of described protecting jacket and flange thread bush.
3. stop valve sealing configuration according to claim 2, is characterized in that, the outside of described protecting jacket is provided with some lugs, and the opening end outer periphery of protecting jacket is provided with some oiling through holes.
4. the stop valve sealing configuration according to claim 1 or 2 or 3, is characterized in that, the outside that the inwall of described valve rod hole is positioned at gland is provided with spacing ladder surface, and the upper end of described gland is provided with position limiting convex ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520501580.2U CN204901046U (en) | 2015-07-13 | 2015-07-13 | Stop valve seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520501580.2U CN204901046U (en) | 2015-07-13 | 2015-07-13 | Stop valve seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204901046U true CN204901046U (en) | 2015-12-23 |
Family
ID=54923220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520501580.2U Expired - Fee Related CN204901046U (en) | 2015-07-13 | 2015-07-13 | Stop valve seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204901046U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925471A (en) * | 2019-12-10 | 2020-03-27 | 上海廷本流体控制有限公司 | Low-temperature stop valve |
-
2015
- 2015-07-13 CN CN201520501580.2U patent/CN204901046U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925471A (en) * | 2019-12-10 | 2020-03-27 | 上海廷本流体控制有限公司 | Low-temperature stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200911 Address after: 325000 Huang Tian Jie Dao Feng Yu Cun, Yongjia County, Wenzhou City, Zhejiang Province Patentee after: Ouqiu Valve Co.,Ltd. Address before: Hangzhou City, Zhejiang province 311516 Tonglu County town Yaolin Industrial Zone Patentee before: HATUOLIHAITUO VALVE (HANGZHOU) Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20210713 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |