CN201487235U - Throttling valve - Google Patents
Throttling valve Download PDFInfo
- Publication number
- CN201487235U CN201487235U CN200920207985XU CN200920207985U CN201487235U CN 201487235 U CN201487235 U CN 201487235U CN 200920207985X U CN200920207985X U CN 200920207985XU CN 200920207985 U CN200920207985 U CN 200920207985U CN 201487235 U CN201487235 U CN 201487235U
- Authority
- CN
- China
- Prior art keywords
- graduated ring
- valve rod
- master calibration
- circle
- secondary graduated
- 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 - Lifetime
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- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The utility model discloses a throttling valve, comprising a body (1), a valve element (2) and a valve rod (3), wherein the body (1) is internally provided with the valve element (2) and the valve rod (3). The throttling valve is characterized in that the body (1) is fixedly provided with a main graduated ring (5); one end of an auxiliary graduated ring (6) is sleeved outside the main graduated ring (5), and the other end of the auxiliary graduated ring (6) is connected with the valve rod (3); the auxiliary graduated ring (6) can rotate relative to the main graduated ring (5); the main graduated ring (5) and the auxiliary graduated ring (6) are both sleeved on the valve rod (3); and the main graduated ring (5) and the valve rod (3) are in threaded connection. Main graduation and auxiliary graduation (51 and 61) mark the opening degree of a throttling opening, the auxiliary graduation (61) rotates with an adjusting handle (4), and when the auxiliary graduation (61) rotates for one circle, the main graduation changes for one grid, thereby the precision for indicating the throttling flow rate is improved.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of throttle valve.
Background technique
Throttle valve is by changing throttling cross section or the chock length valve with the control fluid flow.Become one-way throttle valve with throttle valve and one-way valve parallel connection are then capable of being combined.Throttle valve and one-way throttle valve are easy flow control valves, and in hydraulic system with constant displacement pump, throttle valve and relief valve cooperate, and can form three kinds of throttle grverning systems, i.e. in-line throttle grverning system, oil circuit throttle grverning system and by-pass throttle speed control system.Throttle valve does not have flow reverse feedback function, can not compensate the speed instability that is caused by load variations, and it is little or to the less demanding occasion of speed stability generally only to be used for load variations.
Form structure and the stop valve and the indistinction of throttle valve (throttle valve), just the shape of their open-shut device is different.It is streamlined that the open-shut device of throttle valve mostly is circular cone greatly, changes channel cross-sectional area by it and reach adjusting flow and pressure.Throttle valve is for fall the usefulness of making to reduce pressure medium under the great situation at pressure.
Medium flow velocity between throttling flap and valve seat is very big, is so-called cavitation phenomenons to cause the very fast damage one of these part surfaces.In order to reduce cavitation influence as far as possible, flap adopts the material of anti-cavitation the (alloyed steel manufacturing) and makes top angle is 140 °～180 ° streamlined cone, and this can also make flap that bigger Lift can be arranged, and generally is not recommended in throttling under the small gap.
Existing throttle valve can't accurately indicate the opening degree of restriction, and the precision of indication throttling flow is lower.
The model utility content
The technical problems to be solved in the utility model provides a kind of throttle valve that indicates the opening degree of restriction.
For solving the problems of the technologies described above, the utility model throttle valve comprises body, spool and valve rod, described spool and described valve rod are set in the described body, it is characterized in that: described body fixedly installs a master calibration circle, one end of the outer socket one secondary graduated ring of described master calibration circle, the other end of described secondary graduated ring connects described valve rod, described secondary graduated ring can be with respect to described master calibration circle rotation, described master calibration circle and described secondary graduated ring all are enclosed within on the described valve rod, and described master calibration circle and described valve rod are for being threaded.
Preferably, the end of described valve rod is provided with regulating handle.
Further, an O type circle is set between described valve rod and the described secondary graduated ring, described regulating handle is provided with a groove, and the end of described secondary graduated ring is arranged in the described groove.The one corresponding step that secondary scale is enclosed position-limiting action at axial direction respectively is set between described secondary graduated ring and described valve rod.
Preferably, an O type circle is set between described spool and the described body.
Preferably, on the external cylindrical surface of described master calibration circle and the parallel axes direction master calibration is set, the excircle direction of described secondary graduated ring is provided with secondary scale.
Preferably, described spool is provided with a T-slot, and described valve rod is provided with a T shape connecting head, and described T shape connecting head is arranged in the described T-slot, and described T shape connecting head can be with respect to described T-slot rotation.
The utility model is adjusted zero-bit earlier in use, owing to secondary graduated ring can rotate with respect to regulating handle, so the revolute pair graduated ring can be aimed at the zero-bit of master calibration and secondary scale.Because O type circle is arranged between secondary graduated ring and the valve rod, rotate regulating handle again, secondary graduated ring along with valve rod together, rotate with respect to the master calibration circle.Thereby can read the reading of major-minor scale.Major and minor scale indicates the opening degree of restriction, and secondary scale is along with regulating handle rotates together, and secondary scale rotation 1 is enclosed, and master calibration changes 1 lattice, has improved the precision of indication throttling flow.
Description of drawings
Fig. 1 is a structural drawing of the present utility model.
Fig. 2 is the sectional view of Fig. 1.
Reference character is as follows:
1, body 5, master calibration circle
2, spool 51, master calibration
21, T-slot 6, secondary graduated ring
3, valve rod 61, secondary scale
31, T shape connecting head 7, O type circle
4, regulating handle 8, O type circle
Embodiment
Hereinafter with reference to the accompanying drawings the utility model throttle valve is described in detail.
As depicted in figs. 1 and 2, the utility model throttle valve comprises body 1, spool 2 and valve rod 3, spool 2 and valve rod 3 are set in the body 1, body 1 fixedly installs a master calibration circle 5, one end of master calibration circle 5 outer socket one secondary graduated rings 6, the other end of secondary graduated ring 6 connects valve rod 3, and secondary graduated ring 6 can be with respect to 5 rotations of master calibration circle, master calibration circle 5 and secondary graduated ring 6 all are enclosed within on the valve rod 3, and master calibration circle 5 and valve rod 3 are for being threaded.Between secondary graduated ring 6 and the master calibration circle 5 is Spielpassung, and secondary graduated ring 6 can be with respect to 5 rotations of master calibration circle.
The end of valve rod 3 is provided with regulating handle 4.Regulating handle 4 is fixed on the end of valve rod 3.Rough decorative pattern is set, to increase the frictional force between finger and the regulating handle 4 on the circumferential surface of regulating handle 4.
For guaranteeing secondary scale 61 and master calibration 51 correctly to zero-bit, secondary graduated ring 6 is made rotary type, can be rotated by relative adjustment handle 4.One O type circle 8 is set between valve rod 3 and the secondary graduated ring 6, and regulating handle 4 is provided with a groove, and the end of secondary graduated ring 6 is arranged in the groove.One end of secondary graduated ring 6 is enclosed within on the periphery of master calibration circle 5, and the other end of secondary graduated ring 6 is resisted against in the groove of regulating handle 4.And a flexible O type circle 8 also is set between valve rod 3 and secondary graduated ring 6, when rotating secondary graduated ring 6 by hand, secondary graduated ring 6 can rotate with respect to master calibration circle 5 and regulating handle 4.
When finger rotated regulating handle 4, the elastic force of O type circle 8 leaned secondary graduated ring 6 in the groove of regulating handle 4.8 damping functions of O type circle that secondary graduated ring 6 and regulating handle are 4, at major and minor scale during to zero-bit, comfortable feel when guaranteeing secondary graduated ring 6 rotations; Throttle valve guarantees that again secondary graduated ring 6 can not rotate arbitrarily with respect to regulating handle 4 when adjusting flow.One corresponding step respectively is set between secondary graduated ring 6 and valve rod 3, and the groove of this step and regulating handle 4 plays at axial position-limiting action secondary graduated ring 6.Acting as of O type circle 8: when kinetic friction, produce frictional force, promptly when 6 pairs of zero-bits of secondary graduated ring, provide suitable damping force.When regulating flow, can prevent that secondary graduated ring 6 from producing unnecessary rotation simultaneously.
One O type circle 7 is set between spool 2 and the body 1.Acting as of O type circle 7: between spool 2 and body 1, seal.
On the external cylindrical surface of master calibration circle 5 and the parallel axes direction master calibration 51 is set, the excircle direction of secondary graduated ring 6 is provided with secondary scale 61.Master calibration 51, secondary scale 61 are used for indicating the opening degree of restriction, and secondary scale 61 is along with regulating handle 4 rotates together, and secondary scale 61 rotations 1 are enclosed, and master calibration 51 changes 1 lattice have improved the precision of indicating the throttling flow.
Spool 2 is provided with a T-slot 21, and valve rod 3 is provided with a T shape connecting head 31, and T shape connecting head 31 is arranged in the T-slot 21, and T shape connecting head 31 can be with respect to T-slot 21 rotations.The rotation motion of regulating handle 4 converts the straight line motion of throttling valve core 2 to, its key point is: the T shape connecting head 31 of regulating handle 4 is stuck in the T-slot 21 of throttling valve core 2, revolution regulating handle 4 can spur or promote throttling valve core 2 motions when rotating, guarantee the reliable of sealing.
The utility model is adjusted zero-bit earlier in use, because secondary graduated ring 6 can be with respect to regulating handle 4 rotations, so revolute pair graduated ring 6 can be aimed at the zero-bit of master calibration 51 and secondary scale 61.Because O type circle 8 is arranged between secondary graduated ring 6 and the valve rod 3, rotate regulating handle 4 again, secondary graduated ring 6 along with valve rod 3 together, with respect to 5 rotations of master calibration circle.Thereby can read the reading of major-minor scale 61.
The principle of reading is the principle of amplifying according to spiral, and promptly secondary graduated ring 6 relative master calibration circles 5 rotate a circle, and secondary graduated ring 6 just advances or the slow astern lattice along axial direction.All scale values on just secondary graduated ring 6 circumference only are equivalent to the lattice on the master calibration circle 5, the reading that promptly secondary graduated ring 6 can differential master calibration circle 5, and therefore the slight distance that moves along axial direction just can the readings signify on circumference be come out.
Above-mentioned design example only is used for the utility model is described, and does not constitute the restriction to the claim scope, and other substantial equivalence means that it may occur to persons skilled in the art that are all in the utility model claim scope.
Claims (6)
1. throttle valve, comprise body (1), spool (2) and valve rod (3), described spool (2) and described valve rod (3) are set in the described body (1), it is characterized in that: described body (1) fixedly installs a master calibration circle (5), one end of the outer socket one secondary graduated ring (6) of described master calibration circle (5), the other end of described secondary graduated ring (6) connects described valve rod (3), described secondary graduated ring (6) can rotate with respect to described master calibration circle (5), described master calibration circle (5) and described secondary graduated ring (6) all are enclosed within on the described valve rod (3), and described master calibration circle (5) and described valve rod (3) are for being threaded.
2. throttle valve according to claim 1 is characterized in that: the end of described valve rod (3) is provided with regulating handle (4).
3. throttle valve according to claim 2, it is characterized in that: an O type circle (8) is set between described valve rod (3) and the described secondary graduated ring (6), described regulating handle (4) is provided with a groove, the end of described secondary graduated ring (6) is arranged in the described groove, and a corresponding step that secondary graduated ring (6) is played position-limiting action at axial direction respectively is set between described secondary graduated ring (6) and described valve rod (3).
4. throttle valve according to claim 1 is characterized in that: an O type circle (7) is set between described spool (2) and the described body (1).
5. throttle valve according to claim 1 is characterized in that: master calibration (51) is set on the external cylindrical surface of described master calibration circle (5) and the parallel axes direction, and the excircle direction of described secondary graduated ring (6) is provided with secondary scale (61).
6. throttle valve according to claim 1, it is characterized in that: described spool (2) is provided with a T-slot (21), described valve rod (3) is provided with a T shape connecting head (31), described T shape connecting head (31) is arranged in the described T-slot (21), and described T shape connecting head (31) can rotate with respect to described T-slot (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920207985XU CN201487235U (en) | 2009-08-17 | 2009-08-17 | Throttling valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920207985XU CN201487235U (en) | 2009-08-17 | 2009-08-17 | Throttling valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201487235U true CN201487235U (en) | 2010-05-26 |
Family
ID=42426114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920207985XU Expired - Lifetime CN201487235U (en) | 2009-08-17 | 2009-08-17 | Throttling valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201487235U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062219A (en) * | 2010-12-06 | 2011-05-18 | 北京有色金属研究总院 | Valve for controlling delivery of metal melt and use method thereof |
| CN103062465A (en) * | 2011-10-18 | 2013-04-24 | 大金工业株式会社 | Pressure adjusting screw mechanism and pressure control valve |
| CN103447948A (en) * | 2013-08-15 | 2013-12-18 | 张满九 | Rotary grinding machine chuck connection structure |
| CN106567829A (en) * | 2016-11-15 | 2017-04-19 | 合肥通用机械研究院 | Adjustable-lift one-way valve used for micro reciprocating pump |
-
2009
- 2009-08-17 CN CN200920207985XU patent/CN201487235U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062219A (en) * | 2010-12-06 | 2011-05-18 | 北京有色金属研究总院 | Valve for controlling delivery of metal melt and use method thereof |
| CN102062219B (en) * | 2010-12-06 | 2012-08-29 | 北京有色金属研究总院 | Valve for controlling delivery of metal melt and use method thereof |
| CN103062465A (en) * | 2011-10-18 | 2013-04-24 | 大金工业株式会社 | Pressure adjusting screw mechanism and pressure control valve |
| CN103062465B (en) * | 2011-10-18 | 2015-05-06 | 大金工业株式会社 | Pressure adjusting screw mechanism and pressure control valve |
| CN103447948A (en) * | 2013-08-15 | 2013-12-18 | 张满九 | Rotary grinding machine chuck connection structure |
| CN103447948B (en) * | 2013-08-15 | 2015-10-28 | 张满九 | Rotatable grinding machine chuck syndeton |
| CN106567829A (en) * | 2016-11-15 | 2017-04-19 | 合肥通用机械研究院 | Adjustable-lift one-way valve used for micro reciprocating pump |
| CN106567829B (en) * | 2016-11-15 | 2019-01-25 | 合肥通用机械研究院有限公司 | A kind of adjustable lift check valve of micro reciprocating pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FESTO (CHINA) AUTOMATION MANUFACTURING LTD. Free format text: FORMER OWNER: FESTO (CHINA) LTD. Effective date: 20121121 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121121 Address after: 201206 Shanghai City Jingqiao export processing zone of Pudong New Area (South) Long Hu Road No. 143 Patentee after: FESTO (China) automation manufacturing Co. Ltd. Address before: 201206 Jinqiao Road, Pudong New Area Jinqiao Export Processing Zone, Shanghai, 1156 Patentee before: FESTO (China) Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100526 |
|
| CX01 | Expiry of patent term |