CN101532569A - Plug valve which is opened or closed after being lifted - Google Patents
Plug valve which is opened or closed after being lifted Download PDFInfo
- Publication number
- CN101532569A CN101532569A CN200910097812A CN200910097812A CN101532569A CN 101532569 A CN101532569 A CN 101532569A CN 200910097812 A CN200910097812 A CN 200910097812A CN 200910097812 A CN200910097812 A CN 200910097812A CN 101532569 A CN101532569 A CN 101532569A
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- Prior art keywords
- valve
- valve rod
- cock
- stem mut
- stem
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Abstract
The invention relates to a plug valve which is firstly lifted, then opened and closed, comprising a valve body, a plug, a valve stem, a bracket, a valve cap and a wrench; the plug utilizes the tapered structure with big head and small end; the sealing surface of the valve body and the plug utilizes the tapered structure with big head and small end; the plug comprises a rotation mechanism composed of a hand wheel and a valve-stem nut; the valve-stem nut is arranged on the bracket through a bearing; the valve-stem nut is provided with a through hole adapted with the upper end of the valve stem along the axial direction; the valve-stem nut is in screw-thread fit connection with the valve stem; the rotatable hand wheel is fixedly connected at the top end of the valve-stem nut; the valve stem is lifted and declined through the rotatable hand wheel; the valve stem and the plug rotate through the rotation of the wrench. The invention firstly lifts the plug by rotating hand wheel, then opens and closes the valve door through the rotation of the wrench; the invention is easily operated and has good tightness.
Description
Technical field
The present invention relates to a kind of valve, relate in particular to a kind of stopcock that afterwards opens and closes that promotes earlier.
Background technique
Conventional ball valve or stopcock are for good seal, the sealing surface of spheroid or cock and the sealing surface of valve seat are fitted tightly, especially high pressure valve, medium acts on the power in spheroid or the cock, make the tightr of spheroid or cock and valve seat applying, thereby cause valve opening and closing power too big, even situation that can't opening/shutting valve.To being used for the operating mode medium of High Temperature High Pressure, the wear-resisting metallic material of the general employing of the sealing surface of spheroid, cock and valve seat, this moment, the frictional force of valve sealing face was bigger, the valve opening and closing power that needs are bigger, therefore, easier generation valve can't be opened because of hoisting capacity is excessive or the situation of throttle down, thereby causes the loss that can not expect.
Summary of the invention
The objective of the invention is to overcome the defective of prior art, a kind of stopcock of easier keying is provided.
For achieving the above object, the present invention adopts a kind of stopcock that afterwards opens and closes that promotes earlier, comprise valve body, cock, valve rod, support, valve gap, spanner, advance along horizontal formation in the valve body, the outlet fluid passage, cock also is communicated with to advance in the middle part of being arranged in the valve body, the outlet fluid passage, advance in sealing surface on the outer wall of cock and the valve body, the valve body sealing surface of outlet is close to formation and is sealed and matched, valve gap is fixed on the valve body upper-end surface, support is fixed on the valve gap upper-end surface, vertically offer valve rod hole in the support, valve rod vertically passes valve rod hole and the valve gap top in the support, fixedly connected with cock in the valve rod lower end, spanner is fixed on the valve rod and can rotates synchronously with valve rod, up big and down small cone structure is adopted in cock, sealing surface place with cock on valve body adopts up big and down small cone structure, stopcock comprises rotating machinery, rotating machinery is made up of handwheel and Stem Mut, Stem Mut is arranged on the support by bearing, axially offer and the suitable through hole in the upper end portion of valve rod along it in the Stem Mut, be connected between Stem Mut and the valve rod, rotating handwheel is fixedly connected on the Stem Mut top, drive the rotation of Stem Mut by rotation hand wheel, thereby can make valve rod rising/descending motion, the rotation by spanner can make valve rod and cock rotate synchronously.
Stem Mut and valve rod are connected and can adopt following dual mode: 1, form internal thread on the through-hole wall of Stem Mut, counterpart forms outside thread on valve rod, and Stem Mut is threaded with the valve rod formation.2, form trapezoidal internal thread on the through-hole wall of Stem Mut, counterpart forms trapezoidal outside thread on valve rod, and Stem Mut constitutes trapezoidal thread with valve rod and is connected.
When the present invention opens or closes valve when needs, be rotated counterclockwise handwheel earlier, handwheel drives Stem Mut and rotates simultaneously, the drive valve rod is risen in being rotated counterclockwise of Stem Mut, valve rod drives cock and rises simultaneously, because cock is taper, the rising of cock will make the sealing surface of cock and the sealing surface of valve body throw off mutually, after the sealing surface of valve is thrown off mutually, just can open very easily or throttle down by pulling spanner, after the operation of spanner is finished, the handwheel that can turn clockwise, and drive Stem Mut simultaneously and clockwise rotate, thus drive valve rod and cock moves downward, thereby cock sealing surface and valve body sealing surface are fitted tightly, guarantee the reliable sealing of valve.The present invention is easy to operate, good airproof performance.
Description of drawings
Fig. 1 is an embodiment of the invention structural representation.
Embodiment
As shown in Figure 1, specific embodiments of the invention are a kind of stopcocks that afterwards open and close that promote earlier, comprise valve body 1, cock 2, valve rod 3, support 4, valve gap 5, rotating machinery 7, spanner 6, advance along horizontal formation in the valve body 1, outlet passage (11,12), cock 2 also is communicated with to advance in the middle part of being arranged in the valve body 1, outlet passage (11,12), up big and down small cone structure is adopted in cock 2, sealing surface place with cock 2 on valve body 1 adopts up big and down small cone structure, advance in sealing surface on the outer wall of the cock 2 of taper and the valve body 1, the outlet valve body sealing surface is close to formation and is sealed and matched, valve gap 5 is fixed on valve body 1 upper-end surface, support 4 is fixed on valve gap 5 upper-end surfaces, vertically offer valve rod hole 41 in the support 4, valve rod 3 vertically passes valve rod hole 41 and valve gap 5 tops in the support 4, fixedly connected with cock 2 in valve rod 3 lower ends, spanner 6 is fixed on the valve rod 3 and can rotates synchronously with valve rod 3, rotating machinery 7 is made up of handwheel 71 and Stem Mut 72, Stem Mut logical 72 is crossed 2 thrust-bearings 8 and is located on the support 4, axially offer the tapped hole 721 suitable (being through hole) along it in the Stem Mut 72 with the upper end portion of valve rod 3, counterpart forms outside thread 31 on valve rod 3, and Stem Mut 72 is threaded with valve rod 3 formations.Rotating handwheel 71 is fixedly connected on Stem Mut 72 tops, makes valve rod 3 rising/declines by rotation hand wheel 71, makes valve rod 3 and cock 2 rotations by rotating spanner 6.
Stem Mut 72 in the foregoing description is connected with valve rod 3 and adopts common internal and external threads to be connected.Also can adopt on the inwall of Stem Mut 72 and form trapezoidal internal thread, counterpart forms trapezoidal outside thread on valve rod 3, and Stem Mut 72 constitutes trapezoidal thread with valve rod 3 and is connected.
When the present invention opens or closes valve when needs, be rotated counterclockwise handwheel 71 earlier, handwheel 71 drives Stem Mut 72 and rotates simultaneously, drive valve rod 3 is risen in being rotated counterclockwise of Stem Mut 72, valve rod 3 drives cock 2 and rises simultaneously, because cock 2 is tapers, the rising of cock 2 will make the sealing surface of cock 2 and the sealing surface of valve body 1 throw off mutually, after the sealing surface of valve is thrown off mutually, just can open very easily or throttle down by moving spanner 6, after the operation of spanner 6 is finished, the handwheel 71 that can turn clockwise, and drive Stem Mut 72 simultaneously and clockwise rotate, thus drive valve rod 3 and cock 2 moves downward, thereby cock 2 sealing surfaces and valve body 1 sealing surface are fitted tightly, guarantee the reliable sealing of valve.
Claims (3)
1, a kind of stopcock that afterwards opens and closes that promotes earlier, comprise valve body, cock, valve rod, support, valve gap, spanner, advance along horizontal formation in the valve body, the outlet fluid passage, cock also is communicated with to advance in the middle part of being arranged in the valve body, the outlet fluid passage, advance in sealing surface on the cock outer wall and the valve body, the outlet valve body sealing surface is close to formation and is sealed and matched, valve gap is fixed on the valve body upper-end surface, support is fixed on the valve gap upper-end surface, vertically offer valve rod hole in the support, valve rod vertically passes valve rod hole and the valve gap top in the support, fixedly connected with cock in the valve rod lower end, spanner is fixed on the valve rod and can rotates synchronously with valve rod, it is characterized in that: up big and down small cone structure is adopted in cock, sealing surface place with cock on valve body adopts up big and down small cone structure, stopcock comprises rotating machinery, rotating machinery is made up of handwheel and Stem Mut, Stem Mut is located on the support by bearing, axially offer and the suitable through hole in the upper end portion of valve rod along it in the Stem Mut, be connected between Stem Mut and the valve rod, rotating handwheel is fixedly connected on the Stem Mut top, make valve rod rising/decline by rotation hand wheel, make valve rod and cock rotation by rotating spanner.
2, according to claim 1ly earlier promotes the stopcock that afterwards opens and closes, it is characterized in that: describedly on the through-hole wall of Stem Mut, form internal thread, counterpart formation outside thread on valve rod, Stem Mut is threaded with the valve rod formation.
3, according to claim 1ly earlier promotes the stopcock that afterwards opens and closes, it is characterized in that: describedly form trapezoidal internal thread on the through-hole wall of Stem Mut, counterpart forms trapezoidal outside thread on valve rod, and Stem Mut is connected with valve rod formation trapezoidal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910097812A CN101532569A (en) | 2009-04-15 | 2009-04-15 | Plug valve which is opened or closed after being lifted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910097812A CN101532569A (en) | 2009-04-15 | 2009-04-15 | Plug valve which is opened or closed after being lifted |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101532569A true CN101532569A (en) | 2009-09-16 |
Family
ID=41103345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910097812A Pending CN101532569A (en) | 2009-04-15 | 2009-04-15 | Plug valve which is opened or closed after being lifted |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101532569A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065701A (en) * | 2015-08-05 | 2015-11-18 | 浙江福瑞科流控机械有限公司 | Hard sealing lifting type brake plug valve and control method thereof |
| CN106641312A (en) * | 2017-02-23 | 2017-05-10 | 江苏明江阀业有限公司 | Lifting type plug valve |
-
2009
- 2009-04-15 CN CN200910097812A patent/CN101532569A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065701A (en) * | 2015-08-05 | 2015-11-18 | 浙江福瑞科流控机械有限公司 | Hard sealing lifting type brake plug valve and control method thereof |
| CN106641312A (en) * | 2017-02-23 | 2017-05-10 | 江苏明江阀业有限公司 | Lifting type plug valve |
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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 | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090916 |