CN103967874A - Valve element based on surface function structure - Google Patents
Valve element based on surface function structure Download PDFInfo
- Publication number
- CN103967874A CN103967874A CN201410166636.3A CN201410166636A CN103967874A CN 103967874 A CN103967874 A CN 103967874A CN 201410166636 A CN201410166636 A CN 201410166636A CN 103967874 A CN103967874 A CN 103967874A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve element
- spool
- hole
- micropore
- 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.)
- Pending
Links
Landscapes
- Sliding Valves (AREA)
- Servomotors (AREA)
Abstract
The invention discloses a valve element based on a surface function structure. Relative motion exists between a common valve element and a valve sleeve, a surface membrane on the inner wall of the valve element can be gradually abraded due to friction in the moving process, and long-term reliable control of a common valve can not be guaranteed. Inner micro pores are formed in the outer surface of the valve element, the inner micro pores are distributed in a circular array mode, the depths of the inner micro pores are identical in the axial direction of the valve element, the depths of the adjacent inner micro pores are different in the circumferential direction, and the depths of the inner micro pores which are not adjacent are consistent in the circumferential direction. The valve element is simple in structure and consistent to the assembling mode of a traditional valve seat. The valve element is suitable for being matched with various common valve seats and high in universality, mechanical features and reliability of common valves are improved, and leakage and clamping phenomena are reduced.
Description
Technical field
The present invention relates to a kind of spool, particularly a kind of spool based on function of surface structure.
Background technique
Hydrauservo System is the output quantity that makes system, as displacement, speed or power etc., can follow the variation of input quantity automatically, quickly and accurately and change, and meanwhile, output power is amplified significantly.Hydrauservo System is widely used in industrial control with the advantage of its fast response time, the uniqueness such as load stiffness is large, power ratio control is large.The action that its advantage mainly contains hydraulic actuator is fast, and commutation rapidly; The volume and weight of hydraulic actuator is much smaller than the volume and weight of the electromechanical actuator of equal-wattage; Hydraulic actuator stable drive, antijamming capability are strong, and particularly low-speed performance is good; The speed adjustable range of hydraulic actuator is wide, and power gain is high.
Electric-hydraulic proportion (servo) valve is that the interior proportion electro-magnet of valve is according to the voltage signal of input, continuously, produce pari passu corresponding actions, make operating valve spool produce displacement, port size changes and completes the element of pressure proportional to input voltage, flow output with this.Spool travel also can feed back with the form of machinery, hydraulic pressure or electricity.Due to electric-hydraulic proportion (servo) valve have various, the easy composition of form kind use electric and computer-controlled various electrohydraulic system, control accuracy high, install and use flexibly, many-sided advantage such as cost is lower, response is very fast and contamination resistance is strong, therefore in hydraulic control engineering, acquisition is applied more and more widely.In actual hydraulic pressure control, due to easily stuck or existence leakage of the cooperation between hydrovalve spool and valve pocket, and the heat of hydrovalve can be along with control procedure run-up, in hydraulic element, the different moving element of thermal expansion coefficient diminishes stuck because of its matching gap, cause the transmission accuracy that action is malfunctioning, affect hydraulic system, cause part workpiece quality variation, also can make oil viscosity reduce, reveal and increase, the oil film attenuation of the moving members such as guiding valve and quilt are cut brokenly, surface friction drag increases, and causes wearing and tearing aggravation.Therefore, need to develop a kind of new method of common spool matching design, particularly a kind of ratio (servo) valve core matching design method based on function of surface structure.
A new method for common spool matching design, a kind of particularly ratio (servo) valve core matching design method based on function of surface structure, has very important significance to high efficiency, high precision int in research electrichydraulic control engineering.
At present, do not have for a kind of ratio (servo) valve core matching design method based on function of surface structure in association area.If the patent No. is CN200510036179.7 (notice of authorization CN1730950, at on 02 08th, 2006 notice of authorization day) a kind of damping device that reduces fluid friction power disclosed, it is arranged between the fluid and body surface that needs drag reduction, generally has rotating cylinder and the bearing member of turning function (or have), support, movable wall and attached member composition.Movable wall is wound on rotating cylinder, can make shuttling movement with rotating cylinder motion, when work the part of movable wall and fluid contact with fluid motion, with the surface being contacted by drag reducing fluid because of and made drag reduction by relative velocity minimizing between drag reducing fluid.Movable wall also can be formed by stacking by multiple mono-layer movable wall, between each double wall face, can be free to slide along fixed-direction.In device, between various walls, reentry lubricated with fluid, keep inside and outside fluid pressure balance simultaneously, device internal flow resistance also can arrange that son, dependent activity wall system give drag reduction, and son, slave system internal drag also can be arranged movable wall system drag reduction again.This device can be used for various fluid drag-reduction occasions.But owing to having relative movement between common valve (proportional servo valve) spool and valve pocket, be difficult for reducing and revealing stuck in the situation that in relative movement, arrange that various walls are unfavorable for the cooperation between spool and valve pocket, can not ensure control accuracy, speed of response and reliability simultaneously.Therefore it is not suitable for common valve (particularly proportional servo valve) spool matching design method.If the patent No. is that CN200710126557.X (notice of authorization CN101235940, on 08 06th, 2008 notice of authorization day) discloses one and relates to non-ox stream---Binghambody conveying technology.Especially the applied pipeline transportation method of viscoplasticity material.Comprise: inner-walls of duct processing method, material are shaped by film method and add level matching method etc.Adopt the skin covering of the surface drag reduction method of Biomimetic Fish body surface facial mask, animal intestinal film, design a kind of pipeline that reduces wall friction power, at material and pipeline enclosure, skin covering of the surface is set, make the internal friction of material be greater than tube wall frictional force, high concentration, high viscosity, low intensive viscoplasticity material are carried under the prerequisite of low energy consumption, solved the difficult problem that soft sticky material remote pipe is carried.Have quantity delivered large, fed distance is far away, saving energy, the feature of extensive market.Be applicable to all many-sides such as oil, chemical industry, mining, environmental protection and building.But owing to having relative movement between common valve (proportional servo valve) spool and valve pocket, the skin covering of the surface of its inwall can wear and tear gradually due to the friction in movement process, can not ensure long-time reliable control of common valve.Therefore it is not suitable for common valve (particularly proportional servo valve) spool matching design method.
Summary of the invention
The present invention is directed to the deficiency of above technology, a kind of spool based on function of surface structure is provided.
Micropore in a kind of valve core outer surface based on function of surface structure of the present invention adopts, interior micropore adopts circumference array mode to arrange, along on spool axial direction, the interior micropore degree of depth is consistent, along the circumferential direction go up, adjacent interior micropore hole depth difference, alternate interior micropore hole depth is consistent, adjacent interior micropore hole depth is respectively 0.1mm and 0.2mm
Along the circumferential direction, with identical along adjacent interior micropore pitch-row on spool axial direction, pitch-row is 0.25 ~ 0.5mm; The about 0.4rad of each interior micropore hole half wedge angle, hole point planar diameter length 0.015mm, hole point helix angle 16
, hole point corner radius of curvature 0.12rad, aperture is 0.4 ~ 0.6mm, is 0.5mm as preferred aperture.
The present invention has following beneficial effect:
1, simple in structure, identical with traditional valve seat assembling mode.
2, be applicable to coordinating of various common valve spools and valve seat, versatility is high.
3, improve mechanical property and the reliability of common valve, reduce and reveal and stuck phenomenon.
It is compared with common inner wall smooth oil circuit, and its functional reliability and precision can improve 80% ~ 140%.
Brief description of the drawings
Fig. 1 is valve core structure schematic diagram of the present invention;
Fig. 2 is spool face unfolded drawing;
Fig. 3 is spool schematic cross-section of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of spool based on function of surface structure, micropore in outer surface adopts, interior micropore adopts circumference array mode to arrange, along on spool axial direction, the interior micropore degree of depth is consistent, along the circumferential direction go up, adjacent interior micropore hole depth difference, alternate interior micropore hole depth is consistent, adjacent interior micropore hole depth is respectively 0.1mm and 0.2mm
Along the circumferential direction, with identical along adjacent interior micropore pitch-row on spool axial direction, pitch-row is 0.25 ~ 0.5mm; The about 0.4rad of each interior micropore hole half wedge angle, hole point planar diameter length 0.015mm, 16 ° of hole point helix angles, hole point corner radius of curvature 0.12rad, aperture is 0.4 ~ 0.6mm, is 0.5mm as preferred aperture.
Spool microstructure is microwell array structure, texture drag reduction surface, learn the physical mechanical characteristic of performance, surfacing according to how much adhesion effects, complicated hydrokinetics, surface roughness, micro-structure surface slippage, micro-structure surface lubrication mechanism, material frictions, this microstructure has certain surface roughness or texture, can be conducive to the formation of lubricated dynamic pressure oil film, reduce friction factor, micro-groove can serve as small hydrldynamic pressure lubrication, thereby produces additive fluid kinetic pressure.Its strengthening mechanism is the effect that is greater than gravity due to the capillary force action of microstructure, and annular flow in pipe is completely moistening tube wall has replaced common tube wall being presented to moistening shunting layer dry or that be interrupted shape; Due to effect and the surface tension effect of spiral flow, liquid is pulled to micro-surface, and is kept by capillary rill, and the lubricating film on surface is adsorbed in groove, obtains annular flow and stratified flow phenomenon.In working fluid, there is meeting of more inclination and flow side, thereby produce more fluid flow function, destroy the region slowly of flowing that hydraulic oil occurs due to viscous effect, therefore in the time there is relative movement in spool and valve pocket, these grade micro-surface structures contribute to set up between contact surface or hydrodynamic lubrication film is set up in part, reach the effect of drag reduction, make the fluid liquid resistance modification of passing ratio valve core and valve pocket surface structure, reduce liquid flow damping between spool and valve pocket, increase matching gap precision, reduce stuck phenomenon.And when spool is during in stable state, be adsorbed on the fluid of micro-structure surface, owing to being difficult for revealing compared with large surface tension effects.Wherein valve core outer surface adopts interior micropore, hole depth 0.1 ~ 0.2mm, the about 0.4rad of hole half wedge angle, hole count 50 ~ 60,16 ° of hole point helix angles, half jin of 0.12rad left and right of curvature, point corner, hole, hole point planar section length 0.015mm; Between best hole, spacing is 0.25 ~ 0.5mm, depends on the thick and bore dia in hole.For identical hole base spacing, reduce in aperture, and reinforcing degree increases, and optimum aperture is 0.5mm, and hole shape should be to increase monotonously in point place, the most close hole radius of curvature.When the hydrovalve spool of the function of surface structure of These parameters and valve pocket coordinate, there is high matching gap precision, in the time that valve is worked, realize and reduce liquid flow damping between spool and valve pocket, reduce and reveal.Its mechanism be due to the capillary force action of micropore make annular flow in pipe completely moistening tube wall, due to the effect of spiral flow, liquid is pulled to Kong Jianchu, and is kept by capillary rill.In the time there is motion mutually between spool and valve pocket, fluid in rill can increase the turbulent flow of liquid stream, fluid axial flow is clashed into hole wall and is produced circumferential whirlpool, thereby in fluid, produces pressure drop and more meet stream side and fluid flow function, the mobile object that changes resistance that reaches of strengthening fluid.
The present invention has utilized the new mode of cooperation that changes micro-surface treatment structural design common valve (proportional servo valve) spool of material to improve the operating accuracy between Proportional valve spool and valve pocket, reduces and reveals and stuck phenomenon.The present invention does not relate to the functional reliability of utilizing additional equipment to improve common valve, the control accuracy of Proportional valve and the unfailing performance of work thereof widely in the situation that not increasing peripheral hardware.
Claims (2)
1. the spool based on function of surface structure, it is characterized in that: micropore in the outer surface of spool adopts, interior micropore adopts circumference array mode to arrange, along on spool axial direction, the interior micropore degree of depth is consistent, along the circumferential direction goes up, adjacent interior micropore hole depth difference, alternate interior micropore hole depth is consistent, and adjacent interior micropore hole depth is respectively 0.1mm and 0.2mm; Along the circumferential direction, with identical along adjacent interior micropore pitch-row on spool axial direction, pitch-row is 0.25 ~ 0.5mm; Each interior micropore hole half wedge angle is 0.4rad, hole point planar diameter length 0.015mm, and 16 ° of hole point helix angles, hole point corner radius of curvature 0.12rad, aperture is 0.4 ~ 0.6mm.
2. a kind of spool based on function of surface structure according to claim 1, is characterized in that: described aperture is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166636.3A CN103967874A (en) | 2014-04-23 | 2014-04-23 | Valve element based on surface function structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166636.3A CN103967874A (en) | 2014-04-23 | 2014-04-23 | Valve element based on surface function structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103967874A true CN103967874A (en) | 2014-08-06 |
Family
ID=51237764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410166636.3A Pending CN103967874A (en) | 2014-04-23 | 2014-04-23 | Valve element based on surface function structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103967874A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108291808A (en) * | 2015-11-30 | 2018-07-17 | 罗伯特·博世有限公司 | The method and pendulous laser device of swinging mechanism for manufacturing pendulous laser device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749138A (en) * | 2008-12-18 | 2010-06-23 | 五邑大学 | Motorcycle cylinder jacket laser surface micro-moulding construction |
| CN202422766U (en) * | 2011-11-14 | 2012-09-05 | 福建船政交通职业学院 | Elliptical composite surface texture |
| CN102686838A (en) * | 2009-11-19 | 2012-09-19 | 斗山英维高株式会社 | Engine valve device |
| CN102806232A (en) * | 2012-08-18 | 2012-12-05 | 芜湖市思提克新材料有限公司 | Abrasion-proof low-frictional-resistance roll journal and production process thereof |
| CN103453021A (en) * | 2013-09-13 | 2013-12-18 | 西南石油大学 | Textured roller bit sliding bearing and test method of unit tribological property of texture roller bit sliding bearing |
| CN103635705A (en) * | 2011-07-01 | 2014-03-12 | 松下电器产业株式会社 | Sliding member |
| CN203835872U (en) * | 2014-04-23 | 2014-09-17 | 杭州电子科技大学 | Valve element based on surface functional structure |
-
2014
- 2014-04-23 CN CN201410166636.3A patent/CN103967874A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749138A (en) * | 2008-12-18 | 2010-06-23 | 五邑大学 | Motorcycle cylinder jacket laser surface micro-moulding construction |
| CN102686838A (en) * | 2009-11-19 | 2012-09-19 | 斗山英维高株式会社 | Engine valve device |
| CN103635705A (en) * | 2011-07-01 | 2014-03-12 | 松下电器产业株式会社 | Sliding member |
| CN202422766U (en) * | 2011-11-14 | 2012-09-05 | 福建船政交通职业学院 | Elliptical composite surface texture |
| CN102806232A (en) * | 2012-08-18 | 2012-12-05 | 芜湖市思提克新材料有限公司 | Abrasion-proof low-frictional-resistance roll journal and production process thereof |
| CN103453021A (en) * | 2013-09-13 | 2013-12-18 | 西南石油大学 | Textured roller bit sliding bearing and test method of unit tribological property of texture roller bit sliding bearing |
| CN203835872U (en) * | 2014-04-23 | 2014-09-17 | 杭州电子科技大学 | Valve element based on surface functional structure |
Non-Patent Citations (4)
| Title |
|---|
| 汤勇等: "表面功能结构制造研究进展", 《机械工程学报》 * |
| 王晓雷等: "边界润滑条件下表面微细织构减摩特性的研究", 《润滑与密封》 * |
| 邱孝聪等: "表面织构改善摩擦磨损性能的研究进展", 《润滑与密封》 * |
| 阮鸿雁等: "多圆弧与三角形复合织构表面的动压润滑性能", 《江苏大学学报（自然科学版）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108291808A (en) * | 2015-11-30 | 2018-07-17 | 罗伯特·博世有限公司 | The method and pendulous laser device of swinging mechanism for manufacturing pendulous laser device |
| CN108291808B (en) * | 2015-11-30 | 2021-03-09 | 罗伯特·博世有限公司 | Method for producing a pendulum mechanism of a pendulum laser device and pendulum laser device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103016443B (en) | A kind of gas suspension with pressure relief groove is without friction cylinder | |
| CN108788238B (en) | Deep hole processing intelligent drill rod system with radial tilting pad | |
| CN103047221B (en) | Double-action gas suspension is without friction cylinder | |
| CN103016441B (en) | Air flotation cylinder for forming stable air film by microporous material | |
| CN106369050B (en) | A kind of magnetic suspension aero dynamic bearing | |
| CN104454980B (en) | Energy-saving radial sliding bearing | |
| CN201944119U (en) | Static-pressure bearing with internal-feedback throttling return oil | |
| CN102588435A (en) | Driving control sliding bearing | |
| CN103016445A (en) | Air-suspending frictionless cylinder with pressure equalizing type gas unloading groove | |
| CN103967874A (en) | Valve element based on surface function structure | |
| CN111749939B (en) | High-flow two-dimensional piston type flow servo valve | |
| CN203835872U (en) | Valve element based on surface functional structure | |
| CN203770292U (en) | Variable-cross-section double-piston hydraulic cylinder | |
| CN110821890A (en) | Centrifugal pump volute with bionic structure | |
| CN103047220B (en) | Cylinder barrel air supply pressure equalizing air floatation friction-free air cylinder | |
| CN207470841U (en) | Spool, solenoid directional control valve | |
| CN203161836U (en) | High-bearing capacity high-rigidity aerostatic bearing | |
| CN206436265U (en) | A kind of revolute joint drive system | |
| CN104454993A (en) | Aerostatic-pressurized thrust bearing | |
| CN106704371B (en) | A kind of pressurized air slit thrust bearing and its processing method | |
| CN205331102U (en) | Type electric -hydraulic proportional reversing valve can be enlargied in displacement | |
| CN203627386U (en) | Bidirectional constant force pneumatic output device insusceptible to low pressure | |
| CN103256304B (en) | The high rigidity hydrostatic gas-lubricated bearing of a kind of large carrying | |
| CN210068844U (en) | Hydraulic damper | |
| CN105370647B (en) | Hand-operated direction valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140806 |
|
| RJ01 | Rejection of invention patent application after publication |