CN205207727U - Dark pole bellows gate valve - Google Patents
Dark pole bellows gate valve Download PDFInfo
- Publication number
- CN205207727U CN205207727U CN201521056668.4U CN201521056668U CN205207727U CN 205207727 U CN205207727 U CN 205207727U CN 201521056668 U CN201521056668 U CN 201521056668U CN 205207727 U CN205207727 U CN 205207727U
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- China
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- valve
- bellows
- flashboard
- valve rod
- stem mut
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Abstract
The utility model provides a dark pole bellows gate valve, it is sealed that passes through between flashboard and the bellows to adopt the welding form to realize, ensures the medium and can not enter inside the flashboard. Valve -stem nut installs inside the flashboard head, and the bellows was not influenced by the valve rod power of lifting when valve open was ensured to the gland structure, guaranteed the bellows performance, prolonged the lengthy bellows life -span. Valve -stem nut is connected for the square with the briquetting fitting surface, skids when preventing the valve rod with valve -stem nut relative motion. Be equipped with the motion clearance between valve -stem nut and flashboard and the briquetting, this set up can be when the valve be closed the flashboard realize with the valve seat seal face that automatically regulated coincide, guarantee sealed reliability and prevent that valve rod and bellows from suppressing the atress, prolong the life of lengthy bellows and valve rod, promote the overall stability of valve. Support valve rod department establishes packing structure, realizes bellows and filler double sealing, and the valve keeps sealing performance in long -term use stability is guaranteed to the absolute effectual outer difficult problem of leaking of valve rod department of having solved.
Description
Technical field
The utility model relates to valve field, is specifically related to a kind of dark bar bellows gate valve.
Background technique
As everyone knows, the leakage of valve, particularly along valve rod leak outside be always industrial enterprise feel the problem of headache, along with the development of modernization industrial technology, have higher requirement to the reliability of valve gate technology, leakage and long lifetime do not become the primary index of valve working quality.The technological progress of valve launches around this theme naturally.Valve leak form has leaking outside and leaking two kinds along in flap along valve rod, wherein leak outside cause the leakage being not only a large amount of fluid, consume the energy, befouling environment, even can lead to great accident in some inflammable and explosive and hypertoxic operating modes, solve the matter of utmost importance that valve leakage out of steam system problem is current valve optimization and upgrading.
Summary of the invention
In order to solve the deficiencies in the prior art, of the present utility modelly provide a kind of dark bar bellows gate valve.
The technical solution that the utility model adopts is: a kind of dark bar bellows gate valve, comprise valve body, valve rod, flashboard, valve seat and handwheel, described valve body is provided with valve gap, described valve gap is bolted on valve body, also Stem Mut is provided with between described flashboard and valve rod, described Stem Mut is connected with threaded stem, also briquetting is provided with between described Stem Mut and flashboard, described Stem Mut, the movement clearance that can make flashboard and sealing surface of seat adjusting fitting is also provided with between flashboard and briquetting, also bellows is provided with outside described valve rod.
Described Stem Mut is connected by trapezoidal thread with between valve rod.
Described flashboard is provided with guiding groove, and described valve body is provided with guiding rib, and the slippage spacing with guiding rib of described guiding groove coordinates.
For the stroke space of the upper and lower slippage of valve rod on described flashboard, described valve stem top coordinates with slippage between stroke space.
Described valve gap top is also provided with support, and the joint of described support and bellows and valve body is also provided with pad
Described support is provided with packing cavity, is provided with filler in described packing cavity, and described packing cavity is also provided with Gland, and described Gland is bolted on support.
The beneficial effects of the utility model are: the utility model provides a kind of dark bar bellows gate valve, and dark bar bellows gate valve is formed primarily of component such as valve body, valve seat, flashboard, bellows, valve rod, valve gap, support handwheels.The cylindrical cavity that one can be held flashboard, valve rod and Stem Mut relative movement is provided with in the middle of the valve body of dark bar bellows gate valve.By adopting Type of Welding to realize sealing between flashboard and bellows, guarantee that medium can not be entered flashboard inside.It is inner that Stem Mut is arranged on flashboard head, and when gland structure guarantees valve opening, bellows does not affect by valve rod upper lifting force, ensures bellows performance, the prolongation bellows life-span.Stem Mut is connected for square with briquetting fitting surface, prevents from skidding when valve rod and Stem Mut relative movement.Movement clearance is provided with between Stem Mut and flashboard and briquetting, this arranges and flashboard and sealing surface of seat can realize automatic adjusting fitting when valve closing, ensure the reliability of sealing and to prevent valve rod and bellows from suppressing stressed, extend the working life of bellows and valve rod, the global stability of poppet.Support valve rod place establishes packing seal structure, realizes bellows and filler double seal, definitely effectively solves the difficult problem that valve rod place leaks outside, and guarantees that valve keeps the stable of sealability in Long-Time Service.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model valve rod flashboard linkage structure schematic diagram.
Fig. 3 is the utility model structure flashboard structure sectional view.
1-valve body in figure, 2-valve rod, 3-flashboard, 4-handwheel, 5-valve gap, 6-Stem Mut, 7-movement clearance, 8-bellows, 9-support, 31-valve seat, 32-guiding groove, 33-stroke space, 61-briquetting, 91-pad, 92-packing cavity, 93-Gland.
Embodiment
Existing composition graphs 1, Fig. 2, Fig. 3 are further described the utility model, a kind of dark bar bellows gate valve, comprise valve body 1, valve rod 2, flashboard 3, valve seat 31 and handwheel 4, described valve body 1 is provided with valve gap 5, described valve gap 5 is bolted on valve body 1, also be provided with Stem Mut 6 between described flashboard 3 and valve rod 2, described Stem Mut 6 is connected by trapezoidal thread with between valve rod 2.Also be provided with briquetting 61 between described Stem Mut 6 and flashboard 3, be also provided with between described Stem Mut 6, flashboard 3 and briquetting 61 and can make flashboard 3 and the movement clearance 7 of valve seat 31 sealing surface adjusting fitting, outside described valve rod 2, be also provided with bellows 8.For the stroke space 33 of valve rod about 2 slippage on described flashboard 3, described valve rod 2 top coordinates with slippage between stroke space 33.Realizing by adopting Type of Welding between flashboard 3 and bellows 8 sealing, guaranteeing that medium can not be entered flashboard inside.Stem Mut 6 is connected for square with briquetting 61 fitting surface, prevents from skidding when valve rod 2 and Stem Mut 6 relative movement.Movement clearance 7 is provided with between Stem Mut 6 and flashboard 3 and briquetting 61, this arranges and flashboard 3 and valve seat 30 sealing surface can realize automatic adjusting fitting when valve closing, ensure the reliability of sealing and prevent valve rod and bellows 8 from suppressing stressed, extend the working life of bellows 8 and valve rod 2, the global stability of poppet.Support 9 valve rod place establishes packing seal structure, realizes bellows 8 and filler double seal, definitely effectively solves the difficult problem that valve rod place leaks outside, and guarantees that valve keeps the stable of sealability in Long-Time Service.
Described flashboard 3 is provided with guiding groove 32, and described valve body 1 is provided with guiding rib, and the slippage spacing with guiding rib of described guiding groove 32 coordinates.
Described valve gap 5 top is also provided with support 9, and described support 9 is also provided with pad 91 with the joint of bellows 8 and valve body 1
Described support 9 is provided with packing cavity 92, is provided with filler in described packing cavity 92, and described packing cavity 92 is also provided with Gland 93, and described Gland 93 is bolted on support 9.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. a dark bar bellows gate valve, comprise valve body (1), valve rod (2), flashboard (3), valve seat (31) and handwheel (4), described valve body (1) is provided with valve gap (5), described valve gap (5) is bolted on valve body (1), it is characterized in that, Stem Mut (6) is also provided with between described flashboard (3) and valve rod (2), described Stem Mut (6) is threaded with valve rod (2), briquetting (61) is also provided with between described Stem Mut (6) and flashboard (3), described Stem Mut (6), the movement clearance (7) that can make flashboard (3) and valve seat (31) sealing surface adjusting fitting is also provided with between flashboard (3) and briquetting (61), described valve rod (2) outside is also provided with bellows (8).
2. the dark bar bellows gate valve of one according to claim 1, is characterized in that, described Stem Mut (6) is connected by trapezoidal thread with between valve rod (2).
3. the dark bar bellows gate valve of one according to claim 1, is characterized in that, described flashboard (3) is provided with guiding groove (32), and described valve body (1) is provided with guiding rib, and the slippage spacing with guiding rib of described guiding groove (32) coordinates.
4. the dark bar bellows gate valve of one according to claim 1, is characterized in that, for the stroke space (33) of the upper and lower slippage of valve rod (2) on described flashboard (3), described valve rod (2) top coordinates with slippage between stroke space (33).
5. the dark bar bellows gate valve of one according to claim 1, is characterized in that, described valve gap (5) top is also provided with support (9), and described support (9) is also provided with pad (91) with the joint of bellows (8) and valve body (1).
6. the dark bar bellows gate valve of one according to claim 5, it is characterized in that, described support (9) is provided with packing cavity (92), filler is provided with in described packing cavity (92), described packing cavity (92) is also provided with Gland (93), and described Gland (93) is bolted on support (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521056668.4U CN205207727U (en) | 2015-12-17 | 2015-12-17 | Dark pole bellows gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521056668.4U CN205207727U (en) | 2015-12-17 | 2015-12-17 | Dark pole bellows gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205207727U true CN205207727U (en) | 2016-05-04 |
Family
ID=55845445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521056668.4U Active CN205207727U (en) | 2015-12-17 | 2015-12-17 | Dark pole bellows gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205207727U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345578A (en) * | 2016-11-10 | 2017-11-14 | 俞钟晓 | A kind of gate valve that can be indicated open/close states and block leakage |
-
2015
- 2015-12-17 CN CN201521056668.4U patent/CN205207727U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345578A (en) * | 2016-11-10 | 2017-11-14 | 俞钟晓 | A kind of gate valve that can be indicated open/close states and block leakage |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |