CN202144877U - Fully-sealed and zero-leakage plug valve - Google Patents
Fully-sealed and zero-leakage plug valve Download PDFInfo
- Publication number
- CN202144877U CN202144877U CN201120251327U CN201120251327U CN202144877U CN 202144877 U CN202144877 U CN 202144877U CN 201120251327 U CN201120251327 U CN 201120251327U CN 201120251327 U CN201120251327 U CN 201120251327U CN 202144877 U CN202144877 U CN 202144877U
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- CN
- China
- Prior art keywords
- valve
- drive link
- arc drive
- arc
- tie rod
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a plug valve, in particular to a fully-sealed and zero-leakage plug valve. An arc-shaped drive connecting rod drives a valve rod, wherein a valve cover integrally adopts a box-shaped structure, and wraps the valve rod and the arc-shaped drive connecting rod therein; and a metal bellow is arranged between the end part of the arc-shaped drive connecting rod and the valve cover, so as to achieve better sealing property, and simultaneously keeps the advantage that a conventional plug valve can be opened or closed only by rotating 90 degrees.
Description
Technical field
The utility model relates to a kind of stopcock, particularly the full-seal zero-leakage stopcock.
Background technique
The invention of valve attends by human life with application always closely, produces and work, also the history in thousands of years has been arranged so far.Because the continuous increase of demand, the kind of valve, specification output are constantly increased sharply, and according to incompletely statistics, China has more than 3,000 kind of about 30,000 plurality of specifications of valve at present.Valve is the important device of transporting fluid, particularly in inflammable, explosive, the poisonous and hazardous danger medium of transporting, to the sealing of safe and reliable consideration to valve, intensity assurance property has proposed strict requirement.Stopcock since have handle only turn 90 degrees just can realize opening and closing, operate save time, laborsaving, the reliable advantage of sealing and being widely used.Present stopcock valve gap is connected with bolt, nut with valve body and forms sealing.Yet this Seal cage has two leak sources, and one is the joint of valve gap and valve body, and another place is that valve rod rotates at the stuffing box place and produced matching gap too, is anti-heads, have to be clipped in the place, slit with sealing gasket and go to block up.Very harsh when the working environment that the transporting medium temperature raises, the pressure increase makes valve, in order to guarantee being perfectly safe of transporting hazmat, the most basic way is cancelled this two leak sources exactly.Reach the opening and closing valve for those through the inner open-shut device of up-down valve pocket; Like stop valve, gate valve etc.; People can be through being provided with the hanger of open-shut device in the valve rod lower end, the hanger Spielpassung is arranged in the valve pocket, between the valve port of valve body and hanger, is provided with corrugated tube shape elastic telescopic spare; Said elastic telescopic spare two ends separate flashboard and upper cover with valve port and hanger fixed seal connection respectively, thereby reach the purpose of full-seal zero-leakage.Stopcock is a kind of common valve; But stopcock is the medium of transporting liquid state, gaseous state, solid-state a single state both; Medium that again can the liquid-solid mixing shape of transporting; And stopcock has handle and only turn 90 degrees the advantage that just can open and close, open quick, save time, laborsaving sealing is reliable, using scope is extensive.But reach the opening and closing valve through 90 degree rotation faucet bodies for stopcock is this; Because bellows can't be done radially rotational deformation; Said structure can't be suitable for, and needs to become straight line motion with rotation, and straight line motion becomes the mechanical shifting mechanism that rotatablely moves again; Make the structure more complicated, and overall dimensions uprises.
Summary of the invention
The purpose of the utility model is to provide for the deficiency that overcomes existing technology a kind of stopcock of seamless full-seal zero-leakage.
In order to achieve the above object; The technical solution that the utility model provides is: a kind of full-seal zero-leakage stopcock; Include valve gap, valve body, faucet body and valve rod; It is characterized in that: said full-seal zero-leakage stopcock is provided with at least the arc drive link greater than 90 degree arc length; Said arc drive link one end is fixedly connected with valve rod through joint radially, and said valve gap integral body is the case shape valve rod and arc drive link are wrapped in wherein, and said bonnet lower is connected with valve seal; The position corresponding with the arc drive link is provided with its rotatable space that is not less than 90 degree of confession that matches with said arc drive link on the valve gap; Said space and the relative radial sidewalls of the said arc drive link the other end are provided with tie rod holes, and this end end of said arc drive link passes from tie rod holes, and the said part arc drive link that from tie rod holes, passes is arranged with metal bellows; Said metal bellows one end and tie rod holes are tightly connected, and the other end is enclosed in tie rod holes wherein and is connected with valve bonnet seal.
Compared with prior art; The beneficial effect of the utility model is: the utility model is through arc drive link actuate valve stem; Valve gap integral body is the case shape valve rod and arc drive link is wrapped in wherein; And between the end of said arc drive link and valve gap, be provided with said metal bellows, and reached good sealing, also keep traditional stopcock only to turn 90 degrees the advantage that just can open and close simultaneously.
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.
Description of drawings
Accompanying drawing 1 is the utility model specific embodiment 1 structure sectional view;
Accompanying drawing 2 is accompanying drawing 1 an A-A structure sectional view.
Embodiment
As shown in Figure 1; The full-seal zero-leakage stopcock comprises valve gap 1, valve body 2, faucet body 3 and valve rod 4; The bottom of valve body 2 is provided with mounting hole, and faucet body 3 is packed into from mounting hole and is arranged on the valve pocket, and the bottom of faucet body 3 is provided with the push pedal 5 and holddown spring 6 with the mounting hole Spielpassung; The aperture is installed is provided with seal ring 7 and bottom 8 sealings; Valve rod 4 lower ends are passed in valve rod 4 holes to the valve pocket on the valve body 2 and are connected with faucet body 3, and said full-seal zero-leakage stopcock is provided with at least the arc drive link 9 greater than 90 degree arc length, and said arc drive link 9 one ends are fixedly connected with valve rod 4 through joint 10 radially; Said valve gap 1 integral body is the case shape valve rod 4 and arc drive link 9 is wrapped in wherein; Said valve gap 1 bottom and valve body 2 are tightly connected, and are provided with its rotatable space that is not less than 90 degree of confession that matches with said arc drive link 9 with arc drive link 9 corresponding positions on the valve gap 1, and said space and the relative radial sidewalls of said arc drive link 9 the other ends are provided with tie rod holes 11; This end end of said arc drive link 9 passes from tie rod holes 11; Plane, arc drive link 9 place is preferably vertical with valve rod 4, and the center of circle of arc drive link 9 overlaps with valve rod 4 centers, and tie rod holes 11 can be smaller like this.In this specific embodiment, said arc drive link 9 is G shape, and is as shown in Figure 2; The G shape center of arc drive link 9 (promptly radially the end of vertical part) is fixedly connected with valve rod 4 upper ends, and said arc drive link 9 can be for being wholely set with valve rod 4, and said valve gap 1 bottom is the tubular that endoporus and valve rod 4 gaps match; And be provided with flange and valve body 2 is tightly connected; Top is flat fan, and inside is provided with the fan-shaped cavity volume 12 that the arc drive link 9 with G shape matches, and the radial sidewalls of fan-shaped cavity volume 12 is provided with tie rod holes 11; The end of arc drive link 9 passes from tie rod holes 11; The said part arc drive link 9 that from tie rod holes 11, passes is arranged with metal bellows 13, and said metal bellows 13 1 ends and tie rod holes 11 are tightly connected, and the other end is enclosed in tie rod holes 11 wherein and is tightly connected with valve gap 1.Operation for ease is provided with one section column crank 14 parallel with valve rod 4 in arc drive link 9 ends of exposing.
Claims (2)
1. full-seal zero-leakage stopcock; Include valve gap, valve body, cock and valve rod; It is characterized in that: said full-seal zero-leakage stopcock is provided with at least the arc drive link greater than 90 degree arc length; Said arc drive link one end is fixedly connected with valve rod through joint radially, and said valve gap integral body is the case shape valve rod and arc drive link are wrapped in wherein, and said bonnet lower is connected with valve seal; The position corresponding with the arc drive link is provided with its rotatable space that is not less than 90 degree of confession that matches with said arc drive link on the valve gap; Said space and the relative radial sidewalls of the said arc drive link the other end are provided with tie rod holes, and this end end of said arc drive link passes from tie rod holes, and the said part arc drive link that from tie rod holes, passes is arranged with metal bellows; Said metal bellows one end and tie rod holes are tightly connected, and the other end is enclosed in tie rod holes wherein and is connected with valve bonnet seal.
2. full-seal zero-leakage stopcock according to claim 1; It is characterized in that: said arc drive link is a G shape, and the G shape center of arc drive link is fixedly connected with the valve rod upper end, and said bonnet lower is the tubular that endoporus and valve lever clearance match; And be provided with flange and be connected with valve seal; Top is flat fan, and inside is provided with the fan-shaped cavity volume that the arc drive link with G shape matches, and the radial sidewalls of fan-shaped cavity volume is provided with tie rod holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120251327U CN202144877U (en) | 2011-07-15 | 2011-07-15 | Fully-sealed and zero-leakage plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120251327U CN202144877U (en) | 2011-07-15 | 2011-07-15 | Fully-sealed and zero-leakage plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202144877U true CN202144877U (en) | 2012-02-15 |
Family
ID=45580808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120251327U Withdrawn - After Issue CN202144877U (en) | 2011-07-15 | 2011-07-15 | Fully-sealed and zero-leakage plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202144877U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269277A (en) * | 2011-07-15 | 2011-12-07 | 浙江信泰阀门有限公司 | Full-sealing zero leakage plug valve |
-
2011
- 2011-07-15 CN CN201120251327U patent/CN202144877U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269277A (en) * | 2011-07-15 | 2011-12-07 | 浙江信泰阀门有限公司 | Full-sealing zero leakage plug valve |
| CN102269277B (en) * | 2011-07-15 | 2013-04-03 | 浙江信泰阀门有限公司 | Full-sealing zero leakage plug valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120215 Effective date of abandoning: 20130403 |
|
| RGAV | Abandon patent right to avoid regrant |