CN203413224U - Waterproof valve rod sleeve - Google Patents
Waterproof valve rod sleeve Download PDFInfo
- Publication number
- CN203413224U CN203413224U CN201320384871.9U CN201320384871U CN203413224U CN 203413224 U CN203413224 U CN 203413224U CN 201320384871 U CN201320384871 U CN 201320384871U CN 203413224 U CN203413224 U CN 203413224U
- Authority
- CN
- China
- Prior art keywords
- columnar
- valve rod
- hole
- rod sleeve
- cylinder
- 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 discloses a waterproof valve rod sleeve comprising a cylinder body, wherein a columnar projection is arranged at the top end of the cylinder body, a columnar hole is formed in the axle center of the columnar projection, a choke plug for sealing the columnar hole is arranged at the columnar hole, the choke plug is composed of a columnar body placed in the columnar hole and a cap body arranged at one end of the columnar body, an external thread is arranged on the columnar body, internal thread grooves matched with the external thread of the columnar body are formed in the wall of the columnar hole, and a through valve rod hole is formed in the axle center of the choke plug; an external thread connected with a gear box is arranged at the bottom end of the cylinder body, a flange is arranged above the external thread, an annular groove is formed in the lower part of the flange, and an O-shaped sealing ring is fixed in the annular groove. The waterproof valve rod sleeve disclosed by the utility model has good sealing performance, thereby being capable of effectively preventing rain from entering the gear box, avoiding accumulated water in the gear box and relieving the corrosion of components in the gear box so as to prolong the next maintenance time of the valve and greatly save the maintenance cost, and as a result, the economic benefit is obvious.
Description
Technical field
The utility model relates to a kind of waterproof valve rod sleeve of good airproof performance.
Background technique
Gate valve is in the various process systems of oil depot; be install quantity at most, operate the most used equipment, its fundamental function is the passage that switches on or off pipeline medium, changes the flow direction of medium; regulate pressure and the flow of medium, the normal operation of protective tube pipeline equipment.Valve rod is used to indicate the valve opening of ball valve, and it vertically arranges, and in the outer cover of valve rod, is provided with stem sleeve.The structure of existing stem sleeve is comparatively simple, and its lower end is connected with gear housing, and upper end is provided with sealing rubber cover, and the upper end of valve rod passes sleeve through sealing rubber cover.Because sealing rubber cover exposes, the sun easy ageing failure that is exposed to the sun, causes this tube-in-tube structure sealing effect bad, run into rainy weather, rainwater can be easy to flow into sleeve along valve rod, and then flows in gear-box, make to produce ponding in gear-box, accelerated the corrosion of gear-box inner member.
Model utility content
In order to solve the problems of the technologies described above, the utility model provides a kind of waterproof valve rod sleeve of good airproof performance.
Its technical solution is:
A kind of waterproof valve rod sleeve, comprise cylindrical shell, in the bottom of cylindrical shell, be provided with the outside thread being connected with gear-box, top at cylindrical shell is provided with columnar protrusions, axle center at columnar protrusions offers cylindrical hole, at cylindrical hole place, be provided with the plug of its shutoff, plug is comprised of the cap body of inserting the cylinder of cylindrical hole and being arranged on cylinder one end, on cylinder, be provided with outside thread, on the hole wall of cylindrical hole, be provided with the internal thread groove suitable with cylinder outside thread, in the axle center of plug, offer the valve rod hole of perforation.
Preferably, in the inside of cylindrical hole, add 1～2 " O " RunddichtringO.
Preferably, in the bottom of cylindrical shell and the position being positioned at above outside thread be provided with flange, in the bottom of flange, offer circular groove, in circular groove, be fixed with " O " RunddichtringO.
Useful technique effect of the present utility model is:
The utility model good seal performance, can effectively prevent that rainwater from entering in gear-box, avoids there is ponding in gear-box, slows down the corrosion of gear-box inner member, thereby has extended the service time next time of valve, has greatly saved upkeep cost, remarkable in economical benefits.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
Fig. 1 is structural principle schematic diagram of the present utility model.
In figure: 1-cylindrical shell, 101-outside thread, 2-columnar protrusions, 3-cylindrical hole, 4-plug, 401-cylinder, 402-cap body, 403-outside thread, 5-flange, 6-circular groove, 7-" O " shape seal ring, 8-valve rod.
Embodiment
By reference to the accompanying drawings, a kind of waterproof valve rod sleeve, comprises cylindrical shell 1, on the top of cylindrical shell 1, is provided with columnar protrusions 2, and columnar protrusions 2 for integral type designs, offers cylindrical hole 3 in the axle center of columnar protrusions 2 with cylindrical shell 1, and at cylindrical hole, 3 places are provided with plug 4.Plug 4 is comprised of cylinder 401 and the cap body 402 that is arranged on cylinder 401 one end, is provided with outside thread 403 on cylinder 401, is provided with the internal thread groove suitable with cylinder outside thread on the hole wall of cylindrical hole 3.In the axle center of plug 4, offer the valve rod hole of perforation.In the bottom of cylindrical shell 1, be provided with the outside thread 101 being connected with gear-box, at the place, top position of outside thread 101, be provided with flange 5, in the bottom of flange 5, offer circular groove 6, fixing " O " RunddichtringO in circular groove 6.Above-mentioned plug 4, for shutoff cylindrical hole 3, screws in cylinder 401 in cylindrical hole 3 when shutoff, and in order to strengthen sealing effect, before cylinder 401 screws in cylindrical hole 3, the inside of past cylindrical hole 3 installs 1～2 " O " RunddichtringO 7 additional as required.Be somebody's turn to do " O " RunddichtringO 7 thicker, when the cylinder 401 being threaded into pushes, expand, sealing effect is strengthened.
Above-mentioned cylindrical shell 1, columnar protrusions 2 and plug 4 are all made by metallic material.
The utility model improves existing stem sleeve structure, on the top of cylindrical shell 1, set up columnar protrusions 2 on the one hand, in the axle center of columnar protrusions 2, offer cylindrical hole 3, in cylindrical hole 3, install " O " RunddichtringO 7 additional, plug 4 is by cylindrical hole 3 shutoff, on plug 4, offer valve rod hole, the upper end of valve rod 8 passes cylindrical shell 1 through valve rod hole.In the bottom of cylindrical shell, set up flange 5 on the other hand, in the bottom of flange 5, offer circular groove 6, fixing " O " RunddichtringO in circular groove 6.The utility model is by the architecture advances of above-mentioned two aspects, and the sealing effect of more former rubber sleeve has had significant enhancing, thereby can effectively avoid rainwater to enter gear-box.
The part of not addressing in aforesaid way is taked or is used for reference prior art and can realize.
It should be noted that, under the instruction of this specification, any equivalents that those skilled in the art have done, or obvious variant, all should be within protection domain of the present utility model.
Claims (3)
1. a waterproof valve rod sleeve, comprise cylindrical shell, in the bottom of cylindrical shell, be provided with the outside thread being connected with gear-box, it is characterized in that: the top at cylindrical shell is provided with columnar protrusions, axle center at columnar protrusions offers cylindrical hole, at cylindrical hole place, be provided with the plug of its shutoff, plug is comprised of the cap body of inserting the cylinder of cylindrical hole and being arranged on cylinder one end, on cylinder, be provided with outside thread, on the hole wall of cylindrical hole, be provided with the internal thread groove suitable with cylinder outside thread, in the axle center of plug, offer the valve rod hole of perforation.
2. a kind of waterproof valve rod sleeve according to claim 1, is characterized in that: in the inside of cylindrical hole, add 1～2 " O " RunddichtringO.
3. a kind of waterproof valve rod sleeve according to claim 1 and 2, is characterized in that: in the bottom of cylindrical shell and the position being positioned at above outside thread be provided with flange, in the bottom of flange, offer circular groove, in circular groove, be fixed with " O " RunddichtringO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320384871.9U CN203413224U (en) | 2013-07-01 | 2013-07-01 | Waterproof valve rod sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320384871.9U CN203413224U (en) | 2013-07-01 | 2013-07-01 | Waterproof valve rod sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203413224U true CN203413224U (en) | 2014-01-29 |
Family
ID=49976113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320384871.9U Expired - Fee Related CN203413224U (en) | 2013-07-01 | 2013-07-01 | Waterproof valve rod sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203413224U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166999A (en) * | 2017-09-18 | 2018-06-15 | 招商局重庆交通科研设计院有限公司 | A kind of antifreeze fire proof construction of the waterproof of tunnel in cold area |
-
2013
- 2013-07-01 CN CN201320384871.9U patent/CN203413224U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166999A (en) * | 2017-09-18 | 2018-06-15 | 招商局重庆交通科研设计院有限公司 | A kind of antifreeze fire proof construction of the waterproof of tunnel in cold area |
| CN108166999B (en) * | 2017-09-18 | 2023-10-27 | 招商局重庆交通科研设计院有限公司 | Waterproof, antifreezing and fireproof structure of tunnel in cold region |
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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: 20140129 Termination date: 20140701 |
|
| EXPY | Termination of patent right or utility model |