CN102147018A - Throttle and cut-off valve - Google Patents
Throttle and cut-off valve Download PDFInfo
- Publication number
- CN102147018A CN102147018A CN2011100624567A CN201110062456A CN102147018A CN 102147018 A CN102147018 A CN 102147018A CN 2011100624567 A CN2011100624567 A CN 2011100624567A CN 201110062456 A CN201110062456 A CN 201110062456A CN 102147018 A CN102147018 A CN 102147018A
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- China
- Prior art keywords
- valve
- spool
- link
- valve rod
- cut
- 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.)
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Abstract
The invention relates to a throttle and cut-off valve which mainly solves the problem of bad sealing performance between a valve core and a valve seat of the prior cut-off valve. The throttle and cut-off valve is characterized in that a valve core (3) is connected with a valve rod (4) through a connecting piece (6); the upper end surface and the lower end surface of the valve core (3) are spherical surfaces; gaps exist among the valve core (3), the valve rod (4) and the connecting piece (6); and the valve core (3) can freely and axially move and deflect along the connecting piece (6) within the set scope. The throttle and cut-off valve has the characteristics that the sealing performance is good, the valve core is hard to fall off, and the service life is long.
Description
Technical field
The present invention relates to a kind of stop valve, be specifically related to a kind of throttling stop valve.
Background technique
Stop valve is most popular a kind of valve in the every profession and trade, existing stop valve is mainly by valve body, valve seat, spool, valve rod and valve gap, valve rod runs through valve gap and is threaded with valve gap, valve gap is connected with valve body, spool matches with valve seat, the end of spool is adopted conical surface to compress mutually with valve seat and is sealed, mainly there is following defective in the stop valve of this structure: 1, owing to there is error when processing or installation, the center of spool can not be overlapped fully with the center of valve seat, produce the gap to making between spool and the valve seat, cause leakage, sealing is poor; 2, original spool adopts vertical mounting type with attachment screw between the valve rod, is subjected to structural limitations, and screw sizes is very little, generally is no more than 8mm.Screw because of corrosion and vibration damage, causes spool to come off, valve invalidation easily.
Summary of the invention
In order to overcome the deficiency of sealing difference between existing stop valve spool and the valve seat, the invention provides a kind of throttling stop valve, this throttling stop valve has the characteristics of good sealing effect, spool difficult drop-off and long service life.
Technological scheme of the present invention is: this throttling stop valve comprises valve body, valve seat, spool, valve rod and valve gap, valve rod runs through valve gap and is threaded with valve gap, valve gap is connected with valve body, spool links to each other with valve rod by link, the upper and lower end face of spool is the ball face, all gapped between spool and valve rod and the link, spool can freely in the scope of setting move axially and deflection along link.
Described link is a hexagon socket head cap screw, in the tapped hole in the valve rod screw retention spare is installed.
Described screw retention spare is a resilient pad.
The present invention has following beneficial effect: owing to take such scheme, spool be two spheric structures, can utilize sphere self contering function to guarantee between spool and the valve seat and whenever spool can both contact well with sealing surface between the valve rod, seals tightly.Characteristics with good sealing effect, spool difficult drop-off and long service life.
Description of drawings
Accompanying drawing 1 is a structure sectional view of the present invention.
1-valve body among the figure, 2-valve seat, 3-spool, 4-valve rod, 5-valve gap, 6-link, 7-screw retention spare.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
By shown in Figure 1, a kind of throttling stop valve, comprise valve body 1, valve seat 2, spool 3, valve rod 4 and valve gap 5, valve rod 4 runs through valve gap 5 and is threaded with valve gap 5, valve gap 5 is connected with valve body 1, and spool 3 links to each other with valve rod 4 by link 6, and the upper and lower end face of spool 3 is the ball face, all gapped between spool 3 and valve rod 4 and the link 6, spool 3 can freely in the scope of setting move axially and deflection along link 6.Because spool 3 be upper and lower pair of spheric structure, can utilize sphere self contering function to guarantee between spool 3 and the valve seat 2 and whenever spool 3 can both contact well with sealing surface between the valve rod 4, seal tightly.Compare good sealing effect with background technique.
Described link 6 is a hexagon socket head cap screw, in the tapped hole in the valve rod 4 screw retention spare 7 is installed.Compact structure can make bigger that the size of link 6 makes, and better join strength is arranged, and can not return the damage of link 6 and spool 3 is come off, long service life.
Described screw retention spare 7 is a resilient pad.Screw retention spare 7 also can adopt spring or other anti-release member.
Claims (3)
1. throttling stop valve, comprise valve body (1), valve seat (2), spool (3), valve rod (4) and valve gap (5), valve rod (4) runs through valve gap (5) and is threaded with valve gap (5), valve gap (5) is connected with valve body (1), it is characterized in that: spool (3) links to each other with valve rod (4) by link (6), the upper and lower end face of spool (3) is the ball face, all gapped between spool (3) and valve rod (4) and the link (6), spool (3) can freely in the scope of setting move axially and deflection along link (6).
2. throttling stop valve according to claim 1 is characterized in that: described link (6) is a hexagon socket head cap screw, in the tapped hole in the valve rod (4) screw retention spare (7) is installed.
3. throttling stop valve according to claim 2 is characterized in that: described screw retention spare (7) is a resilient pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100624567A CN102147018A (en) | 2011-03-15 | 2011-03-15 | Throttle and cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100624567A CN102147018A (en) | 2011-03-15 | 2011-03-15 | Throttle and cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102147018A true CN102147018A (en) | 2011-08-10 |
Family
ID=44421420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100624567A Pending CN102147018A (en) | 2011-03-15 | 2011-03-15 | Throttle and cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102147018A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759028A (en) * | 2014-01-22 | 2014-04-30 | 西南石油大学 | Pressure-controlling drilling throttle valve cylindrical valve needle with flow coefficients linearly changing with aperture |
| CN107676506A (en) * | 2017-10-30 | 2018-02-09 | 圣邦集团有限公司 | A kind of restriction adjustable type three-way flowrate valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2573623A (en) * | 1945-12-07 | 1951-10-30 | Fred J Stover | Valve head |
| US4134420A (en) * | 1977-06-13 | 1979-01-16 | Jameco Industries, Inc. | Faucet valve for sinks, wash basins and other applications |
| DE2827527A1 (en) * | 1978-06-23 | 1980-01-10 | Messerschmitt Boelkow Blohm | Shut=off valve for cryogenic medium - has closure member held on actuating stem under tension and with limited freedom of angular movement |
| CN200984716Y (en) * | 2006-12-13 | 2007-12-05 | 江兴亚 | Quick clamping anti-loose clamp |
| CN201944295U (en) * | 2011-03-15 | 2011-08-24 | 浙东高中压阀门有限公司 | Throttling stop valve |
-
2011
- 2011-03-15 CN CN2011100624567A patent/CN102147018A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2573623A (en) * | 1945-12-07 | 1951-10-30 | Fred J Stover | Valve head |
| US4134420A (en) * | 1977-06-13 | 1979-01-16 | Jameco Industries, Inc. | Faucet valve for sinks, wash basins and other applications |
| DE2827527A1 (en) * | 1978-06-23 | 1980-01-10 | Messerschmitt Boelkow Blohm | Shut=off valve for cryogenic medium - has closure member held on actuating stem under tension and with limited freedom of angular movement |
| CN200984716Y (en) * | 2006-12-13 | 2007-12-05 | 江兴亚 | Quick clamping anti-loose clamp |
| CN201944295U (en) * | 2011-03-15 | 2011-08-24 | 浙东高中压阀门有限公司 | Throttling stop valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759028A (en) * | 2014-01-22 | 2014-04-30 | 西南石油大学 | Pressure-controlling drilling throttle valve cylindrical valve needle with flow coefficients linearly changing with aperture |
| CN103759028B (en) * | 2014-01-22 | 2016-01-20 | 西南石油大学 | A kind of flow coefficient is with the controlled pressure drilling throttle valve tubular needle of aperture linear change |
| CN107676506A (en) * | 2017-10-30 | 2018-02-09 | 圣邦集团有限公司 | A kind of restriction adjustable type three-way flowrate valve |
| CN107676506B (en) * | 2017-10-30 | 2024-04-23 | 圣邦集团有限公司 | Three-way flow valve with adjustable throttling port |
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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 |
Application publication date: 20110810 |