CN2425252Y - Stepped multi-stage throtte pressure-reducing valve - Google Patents
Stepped multi-stage throtte pressure-reducing valve Download PDFInfo
- Publication number
- CN2425252Y CN2425252Y CN 00235893 CN00235893U CN2425252Y CN 2425252 Y CN2425252 Y CN 2425252Y CN 00235893 CN00235893 CN 00235893 CN 00235893 U CN00235893 U CN 00235893U CN 2425252 Y CN2425252 Y CN 2425252Y
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- CN
- China
- Prior art keywords
- valve seat
- spool
- pressure
- valve
- expenditure
- 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 comprises a valve seat in a taper tube shape, a positive circle of which the diameter is unequal on the surface of water, and a valve core in a step shape on a vertical section. Each step is one throttling and pressure-reducing stage, and a gap between each of the throttling and pressure-reducing stages and the valve seat in a taper tube shape forms an annular throttling surface. When the area ratio of each annular throttling surface is determined appropriately, the even ratio of pressure dividing can be obtained so as to achieve the protection function of the small opening degree of a valve sealing surface.
Description
The present invention relates to the multistage throttle reduction valve, relate more specifically to a kind of shape of multistage throttle reduction valve spool valve seat, it makes the machining of multistage throttle reduction valve more simple, and has realized the little aperture protective function of multistage throttle reduction valve sealing surface.
In addition, the present invention is a stepped shaft multistage throttle reduction valve spool valve seat, so in explanation, all refer to stepped shaft multistage throttle reduction valve spool valve seat, but, " stepped shaft multistage throttle reduction valve spool valve seat " that the present invention carries is as a kind of valve internals, it is applicable to the actuator of existing various power patterns, various Flow characteristicss, flow morphology, noise reduction requirement etc.In principle, this spool valve seat is applicable to any range of flow and pressure differential range.
Stepped shaft multistage throttle reduction valve spool valve seat comprises the valve seat of a Taper Pipe shape and the spool of a stepped shaft.Valve seat can have different slopes or curvature according to the requirement of different situations.The valve seat of same Taper Pipe shape also can have different slopes or curvature in the different stages.Spool is the positive circle that several diameters do not wait on horizontal plane, is stepped shaft on vertical section.This kind shape makes the machining of spool valve seat become than being easier to, and is convenient to carry out the machining of degree of precision, and this is first main purpose of the present invention.
In addition, each ladder of spool is an expenditure and pressure level, the gap looping throttleng surface between each expenditure and pressure level and the Taper Pipe shape valve seat, and the ratio of the area of each throttleng surface is an intrinsic standoff ratio.Pressure reduction one timing before and after valve, differential pressure is distributed on each expenditure and pressure level according to intrinsic standoff ratio, has realized the function of multistage dividing potential drop decompression.Suitably select the gap width between each pressure reduction stage and the Taper Pipe shape valve seat, promptly suitably selected intrinsic standoff ratio, can make valve in effective expenditure and pressure stroke, especially less stroke (total travel 15% in) or very little stroke (total travel 1% in, all can obtain to level off to 1 and change less intrinsic standoff ratio with stroke.In other words, on the stroke degree more little in aperture, that pressure reduction is big more, obtain uniform more intrinsic standoff ratio.This makes that in less stroke and very little stroke range each expenditure and pressure level can be carried out the dividing potential drop decompression with sealing surface effectively jointly, and the protection sealing surface is avoided cavitation damage under little aperture condition.This is second main purpose of the present invention.
In addition, adopt the stepped shaft spool, when utilizing fluid to rush at the front obstacle, the reaction force that its impulse force produced has increased the resistance that fluid flows, and has strengthened effect of easing stress, and this also is one of purpose of the present invention.
For realizing above-mentioned purpose of the present invention, the invention provides a kind of shape of spool valve seat, valve seat is the Taper Pipe shape, spool is a stairstepping.Each ladder is an expenditure and pressure level, looping throttleng surface between each expenditure and pressure level and the Taper Pipe shape valve seat.Suitably determine the gap between each expenditure and pressure level and the Taper Pipe shape valve seat, make that valve obtains to level off to 1 in less and very little stroke range, and change less intrinsic standoff ratio with stroke.Adopt the stepped shaft spool, the reaction force that produces when utilizing fluid to rush at the front obstacle has increased the resistance of fluid.
Below, with reference to principle schematic principle of the present invention is described.
1, the stepped shaft spool more easily carries out machining, or the machining of degree of precision.
2, Taper Pipe shape valve seat can adopt different slopes or curvature as required, also can adopt different slope or curvature on the different stages.
3, suitably select the gap between each expenditure and pressure level and the valve seat, also just selected the ratio of the orifice size of each expenditure and pressure level, just intrinsic standoff ratio.And when stroke is less or very little, make intrinsic standoff ratio level off to 1.
4, fluid is every through an expenditure and pressure level, just carries out the throttling dividing potential drop one time, and produces direction opposite effect power when rushing at the front obstacle, has increased the resistance of fluid, has strengthened effect of easing stress.
5, this kind spool valve seat also can be used for flowing the closed form design.
Accompanying drawing is a stepped shaft expenditure and pressure valve core valve seat principle schematic.
Claims (3)
1, a kind of multistage throttle reduction valve spool valve seat, comprise a Taper Pipe shape valve seat, one is the positive circle that several diameters do not wait on horizontal plane, at vertical surface is step-like spool, each ladder of described stepped shaft spool is an expenditure and pressure level, the gap looping throttleng surface between described each expenditure and pressure level and the described Taper Pipe shape valve seat.
2,, it is characterized in that described valve seat is the Taper Pipe shape, can have different slopes or curvature according to different requirements according to the multistage throttle reduction valve spool valve seat of claim 1.
3, according to the multistage throttle reduction valve spool valve seat of claim 1, it is characterized in that the positive circle that described spool does not wait for some diameters on horizontal plane, is stepped shaft on vertical section.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00235893 CN2425252Y (en) | 2000-06-12 | 2000-06-12 | Stepped multi-stage throtte pressure-reducing valve |
| AU2001270453A AU2001270453A1 (en) | 2000-06-12 | 2001-05-30 | A steep-like throttling and reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00235893 CN2425252Y (en) | 2000-06-12 | 2000-06-12 | Stepped multi-stage throtte pressure-reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2425252Y true CN2425252Y (en) | 2001-03-28 |
Family
ID=33597539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00235893 Expired - Fee Related CN2425252Y (en) | 2000-06-12 | 2000-06-12 | Stepped multi-stage throtte pressure-reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2425252Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434695A (en) * | 2011-09-09 | 2012-05-02 | 西麦克阀门制造有限公司 | Angle-type and direct-acting pressure reducing valve |
| CN102954226A (en) * | 2011-08-18 | 2013-03-06 | 孙杰 | Pressure-reducing throttling valve |
| CN106224637A (en) * | 2016-09-20 | 2016-12-14 | 华南理工大学 | A kind of labyrinth type miniflow adjustable valve and method |
| CN107269895A (en) * | 2017-08-15 | 2017-10-20 | 泰州市博圣机械配件厂 | A kind of special multi-grade lever valve body peculiar to vessel |
| CN107906804A (en) * | 2017-12-18 | 2018-04-13 | 温岭市恒发空调部件有限公司 | A kind of expansion valve |
| CN107906805A (en) * | 2017-12-18 | 2018-04-13 | 温岭市恒发空调部件有限公司 | A kind of expansion valve |
| CN110159834A (en) * | 2019-05-07 | 2019-08-23 | 宁波国联电器科技有限公司 | Adjustable CO2Concentration offsets device |
| CN110645405A (en) * | 2019-09-20 | 2020-01-03 | 苏州赛米流体控制技术有限公司 | Quiet type flow control valve |
| CN111473155A (en) * | 2020-03-13 | 2020-07-31 | 合肥通用机械研究院有限公司 | Champagne tower type multi-stage throttle control valve |
| CN112824721A (en) * | 2019-11-21 | 2021-05-21 | Ckd株式会社 | Fluid control valve |
-
2000
- 2000-06-12 CN CN 00235893 patent/CN2425252Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954226A (en) * | 2011-08-18 | 2013-03-06 | 孙杰 | Pressure-reducing throttling valve |
| CN102954226B (en) * | 2011-08-18 | 2014-10-29 | 孙杰 | Pressure-reducing throttling valve |
| CN102434695A (en) * | 2011-09-09 | 2012-05-02 | 西麦克阀门制造有限公司 | Angle-type and direct-acting pressure reducing valve |
| CN106224637A (en) * | 2016-09-20 | 2016-12-14 | 华南理工大学 | A kind of labyrinth type miniflow adjustable valve and method |
| CN107269895A (en) * | 2017-08-15 | 2017-10-20 | 泰州市博圣机械配件厂 | A kind of special multi-grade lever valve body peculiar to vessel |
| CN107906804A (en) * | 2017-12-18 | 2018-04-13 | 温岭市恒发空调部件有限公司 | A kind of expansion valve |
| CN107906805A (en) * | 2017-12-18 | 2018-04-13 | 温岭市恒发空调部件有限公司 | A kind of expansion valve |
| CN107906805B (en) * | 2017-12-18 | 2023-07-28 | 浙江泽顺制冷科技有限公司 | Expansion valve |
| CN110159834A (en) * | 2019-05-07 | 2019-08-23 | 宁波国联电器科技有限公司 | Adjustable CO2Concentration offsets device |
| CN110645405A (en) * | 2019-09-20 | 2020-01-03 | 苏州赛米流体控制技术有限公司 | Quiet type flow control valve |
| CN112824721A (en) * | 2019-11-21 | 2021-05-21 | Ckd株式会社 | Fluid control valve |
| CN111473155A (en) * | 2020-03-13 | 2020-07-31 | 合肥通用机械研究院有限公司 | Champagne tower type multi-stage throttle control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |