CN102619801A - Pure-water bidirectional opposed piezoelectric ceramic reversing valve - Google Patents
Pure-water bidirectional opposed piezoelectric ceramic reversing valve Download PDFInfo
- Publication number
- CN102619801A CN102619801A CN2012101031510A CN201210103151A CN102619801A CN 102619801 A CN102619801 A CN 102619801A CN 2012101031510 A CN2012101031510 A CN 2012101031510A CN 201210103151 A CN201210103151 A CN 201210103151A CN 102619801 A CN102619801 A CN 102619801A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve pocket
- spring
- rod
- piezoelectric ceramic
- 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.)
- Granted
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 86
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 230000002457 bidirectional effect Effects 0.000 title abstract 4
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 230000005611 electricity Effects 0.000 claims description 7
- 239000012736 aqueous medium Substances 0.000 abstract description 8
- 230000004044 response Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000005672 electromagnetic field Effects 0.000 abstract description 5
- 230000003068 static effect Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 abstract 1
- 238000011160 research Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Landscapes
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses a pure-water bidirectional opposed piezoelectric ceramic reversing valve, which comprises mechanisms of two opposed piezoelectric ceramic actuators, a spherical spool disposed in an inner hole of a valve body, a return spring, a spring pushrod and the like. A water inlet, a working opening and a water-returning opening are arranged at the upper end of the valve body and are communicated with each other. On or off of a loop is formed by disconnection or connection between a ceramic ball and a valve seat to change liquid-flowing direction so as to reverse a liquid path as needed. By the pure-water bidirectional opposed piezoelectric ceramic reversing valve, zero-leakage can be achieved by direct sealing between the spool and a valve sleeve and between the valve sleeve and the valve body and by linear sealing between the ceramic spherical spool and the valve seat. By the aid of a valve port damper arranged additionally, static and dynamic performance of the reversing valve can be improved. By the piezoelectric ceramic actuators with high output power, rapid switch can be realized. The pure-water bidirectional opposed piezoelectric ceramic reversing valve has the advantages of good generality and convenience in standardization, and is particularly suitable for working in the aqueous medium environment with low flow, high response and strong electromagnetic field effect.
Description
Technical field
The present invention relates to the valve class, relate in particular to the two-way opposed piezoelectric constant selector valve of a kind of pure water.
Background technique
The pure water hydraulics technology has the unique advantage of the feature of environmental protection and flame retarding because of it, just receiving the extensive attention of countries in the world hydraulic pressure circle, and water hydraulic components also becomes one of key content of research.Selector valve is one of the most key valve element of hydraulic system, also becomes research emphasis to the research of the selector valve that is applicable to the pure water hydraulics system.
Mostly traditional oil pressure selector valve is slide valve type, rotary valve type or cone valve type.The suffered unbalanced force of slide valve type and rotary valve type change-over valve core is very little, and needed steering force is also less, but needs to guarantee the gap of relative movement between spool and valve opening, leaks often bigger.Especially for aqueous medium, the viscosity of water is low can to increase leakage loss, and in the gap when identical with pressure reduction, the leakage loss of the hydraulic pressure selector valve of specification is tens of times of oil pressure selector valve equally.Thereby, for just reduce to leak must be gap design very little, this must bring very big difficulty to processing, very easily occurs stopping up during kinematic pair work simultaneously, stuck phenomenon.The leakage of cone valve type selector valve is very little, but the axial hydraulic force unbalance that spool receives, required steering force is also bigger.In addition, because the compressibility of water is little, rigidity is big, the compression shock that when the pure water selector valve switches suddenly, is produced is even more serious.
In addition, the pressure for vaporization of water is high, make water electrode be prone to vaporization and boiling, thereby under the same conditions, the cavitation erosion degree that the pure water selector valve suffers is than the strong hundreds of times of oil pressure selector valve; Compare with mineral oil, aqueous medium corrosivity is very strong, and the destruction of corrosive action makes prior oil pressure selector valve material all not be suitable for aqueous medium.
Therefore, how to prevent heads, reduce reversing impact, reduce corrosion and effectively suppress cavitation erosion, improve quiet dynamic characteristic, become the key point of pure water selector valve research.
The main research mode of pure water selector valve is mainly following two kinds at present:
First kind is to adopt the cone valve type structure.Such valve is formed by being installed in two groups of main coning valves on the valve body, two pilot-actuated valves that are designed to the end cap flange and two unidirectional controlled cone valves symmetrically.Such valve conveyance capacity is strong, cavitation resistive property good.But it receives the influence of machining accuracy, can't overcome axial unbalanced pressure fully, and needed steering force is also bigger.
Second kind is to adopt slide-valve structure.Such valve leaks for reducing, very little the design of the matching gap between spool and the valve pocket, and so little gap has proposed very harsh requirement for the processing technology of valve, has improved difficulty of processing and processing cost greatly.In addition, so little gap is also easily by the impurity jam, so its application has received considerable restraint.
But; Existing water hydraulic element is to adopt Electromagnetic Drive mostly, needs the maintenance electric current of labor in the course of the work, has the piezoelectric ceramic actuator that electric energy-mechanical energy conversion efficiency is high, energy transfer density is big, speed of response is fast if adopt; Not only can reduce water hydraulic element cost; And can save the maintenance electric current, save energy consumption greatly, and improve the slow deficiency of traditional electrical magnetic driven device speed of response; And existing Electromagnetic Drive receives the interference of external electromagnetic field more obvious, but piezoelectric ceramic actuator does not receive the interference of external electromagnetic field in the course of the work, thereby can improve the existing deficiency of Electromagnetic Drive aspect the electromagnetism anti-interference.
The Japan scientific research personnel has developed the single-stage direct-acting servovalve that directly drives with the lamination type piezoelectric actuator.This valve core directly drives through the lamination type piezoelectric actuator; Spool has Displacement Feedback, realizes closed loop control, but this piezoelectric actuator output displacement is very little; Can only control minimum flow; And the intrinsic hesitation of piezoelectric material is bigger, repeats poor performance, has limited the application and the development of piezoelectricity servovalve.
Summary of the invention
The object of the present invention is to provide the two-way opposed piezoelectric constant selector valve of a kind of pure water; Be used to control the switching in flow loop; Realize not having and leak; Alleviate phenomenons such as cavitation erosion, corrosion simultaneously, improve speed of response, improve the electromagnetism anti-interference and reduce power consumption, be applicable under the stronger aqueous medium environment of small flow, high response, electromagnetic field effect.
The technical solution adopted for the present invention to solve the technical problems is:
The two-way opposed piezoelectric constant selector valve of pure water comprises outer fixing valve pocket, valve body and hold-doun nut, and fixedly valve pocket comprises, is separately fixed at the outer fixing valve pocket I and the outer fixing valve pocket II of the axial right ends of valve body; Hold-doun nut comprises, is fixed on the nut I and the nut II that is fixed on outer fixing valve pocket II right-hand member of the axial left end of outer fixing valve pocket I; The valve body inner axes is provided with through hole; And in through hole, be equipped with successively from left to right the two ports valve covers that radially have one group of through hole, radially have the six ports valve covers, step post I of one group of inclined hole, radially have octal valve pocket, a step post II of one group of through hole and radially have the spring valve pocket of two groups of inclined holes, and between two ports valve covers, six ports valve covers, step post I, octal valve pocket, step post II and each parts of spring valve pocket each other near; In two ports valve covers, six ports valves cover and step post I formation cavity, be provided with spring push-rod I; Octal valve pocket center is provided with ceramic ball; The end of spring push-rod I withstands on the ceramic ball that is contained in the octal valve pocket; Step post II and spring valve pocket form in the cavity and are provided with spring push-rod II, and spring push-rod II one end withstands on the ceramic ball; Two ports valves cover left end inwall is provided with annular projection; Be provided with U-shaped sealing skeleton I in the two ports valves cover, and U-shaped sealing skeleton I is arranged at two ports valves cover right side, inwall annular projection place; Be provided with Returnning spring I between U-shaped sealing skeleton I and spring push-rod I left end shoulder face; Spring valve pocket right-hand member inwall is provided with annular projection, and annular projection place left end is provided with U-shaped sealing skeleton II; Be provided with Returnning spring II between spring push-rod II right-hand member shoulder face in the spring valve pocket and U-shaped sealing skeleton II; Spring push-rod I left end stretches out in two ports valve covers; Spring push-rod II right-hand member stretches out in the spring valve pocket; Outer fixing valve pocket I left end is connected fixing with nut I through screw thread; Be disposed with internal fixation cover I, piezoelectric ceramic actuator I and push rod I in the outer fixing valve pocket I from left to right, and internal fixation cover I, piezoelectric ceramic actuator I and push rod I each other near; Push rod I right-hand member and spring push-rod I stretch out in two ports valves cover part near; Outer fixing valve pocket I is connected fixing with valve body through bolt; Outer fixing valve pocket II right-hand member is connected fixing with nut II through screw thread; Right-to-left is disposed with internal fixation cover II, piezoelectric ceramic actuator II and push rod II in the outer fixing valve pocket II, and internal fixation cover II, piezoelectric ceramic actuator II and push rod II each other near; Push rod II left end and spring push-rod II stretch out in spring valve pocket part near; Outer fixing valve pocket II is connected fixing with valve body through bolt; Nut I left side is provided with axial micrometer adjusting screw I, and axially micrometer adjusting screw I end withstands on the internal fixation cover I left side; Nut II left side is provided with axial micrometer adjusting screw II, and axially micrometer adjusting screw II end withstands on the internal fixation cover II right side; Valve body top has water intake, working hole and backwater mouth, and is provided with the valve port damper in water intake, working hole and the backwater mouth; Valve body lower portion has the runner that is communicated with the valve body right ends; Internal fixation cover I and nut I are provided with and are used for the through hole that piezoelectric ceramic actuator I power line stretches out; Internal fixation cover II and nut II are provided with and are used for the through hole that piezoelectric ceramic actuator II power line stretches out;
When piezoelectric ceramic actuator II dead electricity; Piezoelectric ceramic actuator I gets when electric, and piezoelectric ceramic actuator I promotes push rod I and spring push-rod I moves right, and ceramic ball is separated with step post I; Ceramic ball engages with step post II; The inclined hole that flow puts through the through hole on working hole, the octal valve pocket, step post I center hole, six ports valves gets into backwater mouth, and working hole and backwater mouth can be through-flow on the valve body;
When piezoelectric ceramic actuator I dead electricity; Piezoelectric ceramic actuator II gets when electric, and piezoelectric ceramic actuator II promotes push rod II and spring push-rod II to left movement, and ceramic ball is separated with step post II; Ceramic ball engages with step post I; Flow puts the through hole on the inclined hole, step post II center hole, octal valve pocket of left end through water intake, spring valve, get into working hole, and valve inleting water mouth and working hole can be through-flow;
In the valve working procedure, there is the part flow to get into Returnning spring II place cavity, the through hole that the part flow puts through valve flowing channel, two ports valves gets into Returnning spring I place cavity, makes spring push-rod II, spring push-rod I and the suffered fluid pressure balance of ceramic ball; After the two-way opposed piezoelectric constant selector valve assembling of pure water is accomplished, can regulate the position of internal fixation cover I through the precession of micrometer adjusting screw I, so regulate piezoelectric ceramic actuator I, push rod I contacts with the good of spring push-rod I; Can regulate the position of internal fixation cover II through micrometer adjusting screw II precession, so regulate piezoelectric ceramic actuator II, push rod II contacts with the good of spring push-rod II;
Be provided with O-ring seals I between two ports valves cover and the valve body; Add back-up ring I sealing with O-ring seals II between six ports valves cover and the valve body; Add back-up ring II sealing with O-ring seals III between step post I and the valve body; Add back-up ring III sealing with O-ring seals IV between step post II and the valve body, with O-ring seals V sealing, add back-up ring IV sealing through O-ring seals VI between six ports valves cover and the spring push-rod I between spring valve pocket and the valve body; Add back-up ring V sealing through U-shaped sealing bone II between spring valve pocket and the spring push-rod II, U-shaped sealing skeleton I and two ports valves cover inwall annular projection contacting point are provided with back-up ring VI; Valve body top has water intake, working hole and backwater mouth inwall and is respectively arranged with O-ring seals VI, O-ring seals VII and O-ring seals VIII; Outer fixing valve pocket I and outer fixing valve pocket II minimum diameter are less than the minimum diameter of valve body; Water intake and working hole can exchange, and form P-A, the valve of A-O function.
The present invention compares with background technique, and the beneficial effect that has is:
1, adopts the covering between ceramic ball spool and the step post or leave realization flow break-make; Can realize not having and leak; Switch owing to carry out break-make by ceramic ball, the stroke of ceramic ball is exactly the opening amount of valve, thereby stroke is short; Shorten the switching-over and the resetting time of this selector valve greatly, improved reaction velocity;
2, valve body and valve pocket; All use O-ring seals and U-shaped sealing reinforced seal between valve pocket and the spring push-rod; Efficiently solve the pure water selector valve and leak serious problem, the reasonable Arrangement of runner makes spring push-rod and the suffered fluid pressure balance of ceramic ball can guarantee that the flexible movements of ball valve core are reliable;
3, water intake, working hole and the backwater mouth at valve body is provided with the valve port damper, through regulating damper, can control the speed of flow, improved the dynamic and static state performance of this selector valve;
4, the drive part of this valve adopts piezoelectric ceramic actuator; Because piezoelectric constant has the higher voltage response frequency; Thereby make this valve be applicable in the operating mode than high responsiveness; Only need a sustaining voltage in the piezoelectric constant working procedure and do not receive extraneous electromagnetic interference, thereby make this valve have the strong characteristic of the little and anti-electromagnetic interference property of power consumption;
5, this valve has simple in structure, easy for installation, good manufacturability, is easy to standardized characteristics, is suitable for producing in serial form;
Above-mentioned explanation only is the general introduction of technological scheme of the present invention; Understand technological means of the present invention in order can more to know; And can implement according to the content of specification, and for let of the present invention above-mentioned with other purposes, feature and advantage can be more obviously understandable, below special act preferred embodiment; And conjunction with figs., specify as follows.
Description of drawings
Fig. 1 is a structural representation of the present invention.
In the accompanying drawing: 1 outer fixing valve pocket; 1.1 outer fixing valve pocket I; 1.2 outer fixing valve pocket II; 1.3 internal fixation cover I; 1.4 piezoelectric ceramic actuator I; 1.5 push rod; 1.6 internal fixation cover II; 1.7 piezoelectric ceramic actuator II; 1.8 push rod II; 2 valve bodies; 2.1 two ports valve covers; 2.2 six ports valve covers; 2.3 step post I; 2.4 octal valve pocket; 2.5 step post II; 2.6 spring valve pocket; 2.7 spring push-rod I; 2.8 ceramic ball; 2.9 spring push-rod II; 2.10U shape sealing skeleton I; 2.11 Returnning spring I; 2.12U shape sealing skeleton II; 2.13 Returnning spring II; 2.14O shape seal ring I; 2.15O shape seal ring II; 2.16 back-up ring I; 2.17O shape seal ring III; 2.18 back-up ring II; 2.19O shape seal ring IV; 2.20 back-up ring III; 2.21O shape seal ring V; 2.22O shape seal ring VI; 2.23 back-up ring IV; 2.24 back-up ring V; 2.25 back-up ring VI; 2.26O shape seal ring VI; 2.27O shape seal ring VII; 2.28O shape seal ring VIII; 3 hold-doun nuts; 3.1 nut I; 3.2 nut II; 3.3 micrometer adjusting screw I; 3.4 micrometer adjusting screw II; The G runner; The P water intake; The A working hole; The O backwater mouth.
Embodiment
The two-way opposed piezoelectric constant selector valve of pure water of the present invention as shown in Figure 1 comprises outer fixing valve pocket 1, valve body 2 and hold-doun nut 3; Fixedly valve pocket 1 comprises, is separately fixed at the outer fixing valve pocket I 1.1 and outer fixing valve pocket II1.2 of valve body 2 axial right ends; Hold-doun nut 3 comprises, is fixed on the nut I 3.1 and the nut II3.2 that is fixed on outer fixing valve pocket II1.2 right-hand member of outer fixing valve pocket I 1.1 axial left ends; Valve body 2 inner axes are provided with through hole; And in through hole, be equipped with successively from left to right the two ports valves cover 2.1 that radially has one group of through hole, radially have the six ports valves cover 2.2, step post I 2.3 of one group of inclined hole, radially have octal valve pocket 2.4, a step post II2.5 of one group of through hole and radially have the spring valve pocket 2.6 of two groups of inclined holes, and between two ports valves cover, 2.1, six ports valves cover 2.2, step post I 2.3, octal valve pocket 2.4, step post II2.5 and spring valve pocket 2.6 each parts each other near; In two ports valves cover, 2.1, six ports valves cover 2.2 and step post I 2.3 formation cavitys, be provided with spring push-rod I 2.7; Octal valve pocket 2.4 centers are provided with ceramic ball 2.8; The end of spring push-rod I 2.7 withstands on the ceramic ball 2.8 that is contained in the octal valve pocket 2.4; Step post II2.5 and spring valve pocket 2.6 form in the cavity and are provided with spring push-rod II2.9, and spring push-rod II2.9 one end withstands on the ceramic ball 2.8; Two ports valves overlap 2.1 left end inwalls and are provided with annular projection; Be provided with U-shaped sealing skeleton I 2.10 in the two ports valves cover 2.1, and said U-shaped sealing skeleton I 2.10 is arranged at two ports valves and overlaps right side, 2.1 inwall annular projection place; Be provided with Returnning spring I 2.11 between U-shaped sealing skeleton I 2.10 and spring push-rod I 2.7 left end shoulder faces; Spring valve pocket 2.6 right-hand member inwalls are provided with annular projection, and annular projection place left end is provided with U-shaped sealing skeleton II2.12; Be provided with Returnning spring II2.13 between spring push-rod II2.9 right-hand member shoulder face in the spring valve pocket 2.6 and U-shaped sealing skeleton II2.12; Spring push-rod I 2.7 left ends stretch out in two ports valves cover 2.1; Spring push-rod II2.9 right-hand member stretches out in spring valve pocket 2.6; Outer fixing valve pocket I 1.1 left ends are connected fixing with nut I 3.1 through screw thread; Be disposed with internal fixation cover I 1.3, piezoelectric ceramic actuator I 1.4 and push rod I 1.5 in the outer fixing valve pocket I 1.1 from left to right, and internal fixation cover I 1.3, piezoelectric ceramic actuator I 1.4 and push rod I 1.5 each other near; Push rod I 1.5 right-hand members and spring push-rod I 2.7 stretch out in two ports valves overlap 2.1 parts near; Outer fixing valve pocket I 1.1 is connected fixing with valve body 2 through bolt; Outer fixing valve pocket II1.2 right-hand member is connected fixing with nut II3.2 through screw thread; Right-to-left is disposed with internal fixation cover II1.6, piezoelectric ceramic actuator II1.7 and push rod II1.8 in the outer fixing valve pocket II1.2, and internal fixation cover II1.6, piezoelectric ceramic actuator II1.7 and push rod II1.8 each other near; Push rod II1.8 left end and spring push-rod II2.9 stretch out in spring valve pocket 2.6 parts near; Outer fixing valve pocket II1.2 is connected fixing with valve body 2 through bolt; Nut I 3.1 left sides are provided with axial micrometer adjusting screw I 3.3, and axially micrometer adjusting screw I 3.3 ends withstand on internal fixation cover I 1.3 left sides; Nut II3.2 left side is provided with axial micrometer adjusting screw II3.4, and axially micrometer adjusting screw II3.4 end withstands on the internal fixation cover II1.6 right side; Valve body 2 tops have water intake P, working hole A and backwater mouth O, and are provided with valve port damper 2.13 in the water intake P; Valve body 2 bottoms have the runner G that is communicated with valve body 2 right ends; Be provided with O-ring seals I 2.14 between two ports valves cover 2.1 and the valve body 2; Add back-up ring I 2.16 sealings with O-ring seals II2.15 between six ports valves cover 2.2 and the valve body 2, O-ring seals II2.15 adds back-up ring I 2.16 equally can be with 2.2 sealings of two ports valves cover, 2.1 and six ports valves cover; Add back-up ring II2.18 sealing with O-ring seals III2.17 between step post I 2.3 and the valve body 2; Add back-up ring III2.20 sealing with O-ring seals IV2.19 between step post II2.5 and the valve body 2; Seal with O-ring seals V 2.21 between spring valve pocket 2.6 and the valve body 2; Add back-up ring IV2.23 sealing through O-ring seals VI2.22 between six ports valves cover 2.2 and the spring push-rod I 2.7; Add back-up ring V2.24 sealing through U-shaped sealing skeleton II2.12 between spring valve pocket 2.6 and the spring push-rod II2.9, U-shaped sealing skeleton I 2.10 and two ports valves overlap 2.1 inwall annular projection contacting points and are provided with back-up ring VI2.25; Valve body 2 tops have water intake P, working hole A and backwater mouth O inwall and are respectively arranged with O-ring seals VI2.26, O-ring seals VII2.27 and O-ring seals VIII2.28; Outer fixing valve pocket I 1.1 and the minimum diameter of outer fixing valve pocket II1.2 minimum diameter less than valve body 2, and then two ports valves cover 2.1 does end face and can withstand on outer fixing valve pocket I 1.1 right sides, and spring valve pocket 2.6 right sides can withstand on outer fixing cover II1.2 left side.
Adopt the two-way opposed piezoelectric constant selector valve of pure water of the present invention of said structure; When piezoelectric ceramic actuator II1.7 dead electricity; Piezoelectric ceramic actuator I 1.4 when electric, piezoelectric ceramic actuator I 1.4 produces deformation and promotes push rod I 1.5 and move right with spring push-rod I 2.7, and then spring push-rod I 2.7 promotes ceramic ball 2.8; Ceramic ball 2.8 is separated with step post II2.5 with step post I 2.3 to engage; Flow gets into backwater mouth O through the inclined hole on the through hole on working hole A, the octal valve pocket 2.4, step post I 2.3 center holes, the six ports valves cover 2.2, and working hole A and backwater mouth O can be through-flow on the valve body 2; When piezoelectric ceramic actuator I 1.4 dead electricity; Piezoelectric ceramic actuator II1.7 gets when electric; Piezoelectric ceramic actuator II1.7 generation deformation promotion push rod II1.8 and spring push-rod II2.9 are to left movement; And then spring push-rod II1.8 promotes ceramic ball 2.8, ceramic ball 2.8 separated with step post I 2.3 with step post II2.5 engages, and flow is passed through the through hole on the inclined hole, step post II2.5 center hole, octal valve pocket 2.4 of left end on water intake P, the spring valve pocket 2.6; Get into working hole A, valve body 2 water intake P and working hole A can be through-flow;
In the valve working procedure; There is the part flow to get into Returnning spring II2.13 place cavity; The part flow gets into Returnning spring I 2.11 place cavitys through the through hole on valve flowing channel G, the two ports valves cover 2.1; Make spring push-rod II2.9, spring push-rod I 2.7 and ceramic ball 2.8 suffered fluid pressure balances can guarantee that like this ceramic ball 2.8 flexible movements are reliable, be applicable to mesohigh aqueous medium operating conditions; After the two-way opposed piezoelectric constant selector valve assembling of pure water was accomplished, the user can regulate the position of internal fixation cover I1.1 through the precession of micrometer adjusting screw I 3.3, so regulate piezoelectric ceramic actuator I 1.4, push rod I 1.5 contacts with the good of spring push-rod I 2.7; Can regulate the position of internal fixation cover II1.6 through the precession of micrometer adjusting screw II3.4, so regulate piezoelectric ceramic actuator II1.7, push rod II1.8 contacts with the good of spring push-rod II2.9;
Piezoelectric ceramic actuator has higher response frequency for voltage; Make this selector valve good advantages arranged, and piezoelectric ceramic actuator has good electromagnetism anti-interference, can be used in the stronger environment of electromagnetic field in the occasion that height response requires; Overcome solenoid directional control valve defective in this respect in the past; And piezoelectric ceramic actuator can not consume a large amount of maintenance electric currents, thereby than solenoid directional control valve, this selector valve has stronger advantage aspect low power consumption; Adopt the mode of the two-way opposed driving of piezoelectric ceramic actuator, an end piezoelectric ceramic actuator gets electric the time the other end dead electricity simultaneously, the synchronous collaboration property when guaranteeing to drive; Employing ceramic ball 2.8 is separated with the step post or is engaged, and realizes opening or closing of loop, has shortened movement travel, has improved reaction velocity; Two kinds of structures cooperatively interact and have guaranteed the responsiveness that this selector valve is higher; Be provided with valve port damper 2.13 in valve body 2 top water intake P, working hole A and the backwater mouth O, improved the dynamic and static state performance of valve.
For adapting to the specific (special) requirements of aqueous medium, all elements of valve all can adopt anti-corrosion non-corrosive material, can guarantee that valve has the long life-span in the aqueous medium working environment.In addition, that this valve has is simple in structure, easy for installation, good manufacturability, be easy to standardized characteristics, makes it be suitable for producing in serial form.
The above; Only being preferred embodiment of the present invention, is not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment; Yet be not in order to limit the present invention; Any professional and technical personnel of being familiar with is not in breaking away from technological scheme scope of the present invention, and the technology contents that discloses when appeal capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations, is the content that does not break away from technological scheme of the present invention in every case;, all still belong in the scope of technological scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (3)
1. two-way opposed piezoelectric constant selector valve of pure water; Comprise outer fixing valve pocket (1), valve body (2) and hold-doun nut (3); It is characterized in that: said fixedly valve pocket (1) comprises, is separately fixed at valve body (2) axially the outer fixing valve pocket I (1.1) and the outer fixing valve pocket II (1.2) of right ends; Said hold-doun nut (3) comprises, be fixed on outer fixing valve pocket I (1.1) axially left end nut I (3.1) and be fixed on the nut II (3.2) of outer fixing valve pocket II (1.2) right-hand member; Said valve body (2) inner axes is provided with through hole; And in through hole, be equipped with successively from left to right the two ports valve covers (2.1) that radially have one group of through hole, radially have the six ports valve covers (2.2), step post I (2.3) of one group of inclined hole, radially have octal valve pocket (2.4), a step post II (2.5) of one group of through hole and radially have the spring valve pocket (2.6) of two groups of inclined holes, and between said two ports valve covers (2.1), six ports valve covers (2.2), step post I (2.3), octal valve pocket (2.4), step post II (2.5) and each parts of spring valve pocket (2.6) each other near; , two ports valve covers (2.1), six ports valve covers (2.2) and step post I (2.3) be provided with spring push-rod I (2.7) in forming cavity; Said octal valve pocket (2.4) center is provided with ceramic ball (2.8); The end of said spring push-rod I (2.7) withstands on the ceramic ball (2.8) that is contained in the octal valve pocket (2.4); Said step post II (2.5) forms in the cavity with spring valve pocket (2.6) and is provided with spring push-rod II (2.9), and spring push-rod II (2.9) one ends withstand on the ceramic ball (2.8); Said two ports valve cover (2.1) left end inwalls are provided with annular projection; Be provided with U-shaped sealing skeleton I (2.10) in the said two ports valve covers (2.1), and said U-shaped sealing skeleton I (2.10) is arranged at right side, two ports valve cover (2.1) inwall annular projection places; Be provided with Returnning spring I (2.11) between said U-shaped sealing skeleton I (2.10) and spring push-rod I (2.7) left end shoulder face; Said spring valve pocket (2.6) right-hand member inwall is provided with annular projection, and annular projection place left end is provided with U-shaped sealing skeleton II (2.12); Be provided with Returnning spring II (2.13) between spring push-rod II (2.9) right-hand member shoulder face in the said spring valve pocket (2.6) and U-shaped sealing skeleton II (2.12); Said spring push-rod I (2.7) left end stretches out in two ports valve covers (2.1); Said spring push-rod II (2.9) right-hand member stretches out in spring valve pocket (2.6); Said outer fixing valve pocket I (1.1) left end is connected fixing with nut I (3.1) through screw thread; Be disposed with internal fixation cover I (1.3), piezoelectric ceramic actuator I (1.4) and push rod I (1.5) in the said outer fixing valve pocket I (1.1) from left to right, and said internal fixation overlap I (1.3), piezoelectric ceramic actuator I (1.4) and push rod I (1.5) each other near; Said push rod I (1.5) right-hand member and spring push-rod I (2.7) stretch out in two ports valve covers (2.1) parts near; Said outer fixing valve pocket I (1.1) is connected fixing with valve body (2) through bolt; Said outer fixing valve pocket II (1.2) right-hand member is connected fixing with nut II (3.2) through screw thread; The interior right-to-left of said outer fixing valve pocket II (1.2) is disposed with internal fixation cover II (1.6), piezoelectric ceramic actuator II (1.7) and push rod II (1.8), and said internal fixation overlap II (1.6), piezoelectric ceramic actuator II (1.7) and push rod II (1.8) each other near; Said push rod II (1.8) left end and spring push-rod II (2.9) stretch out in spring valve pocket (2.6) part near; Said outer fixing valve pocket II (1.2) is connected fixing with valve body (2) through bolt; Said nut I (3.1) left side is provided with axial micrometer adjusting screw I (3.3), and said axial micrometer adjusting screw I (3.3) end withstands on internal fixation cover I (1.3) left side; Said nut II (3.2) left side is provided with axial micrometer adjusting screw II (3.4), and said axial micrometer adjusting screw II (3.4) end withstands on internal fixation cover II (1.6) right side; Said valve body (2) top has water intake (P), working hole (A) and backwater mouth (O), and is provided with valve port damper (2.13) in said water intake (P), working hole (A) and the backwater mouth (O); Said valve body (2) bottom has the runner (G) that is communicated with valve body (2) right ends; Said internal fixation cover I (1.3) and nut I (3.1) are provided with and are used for the through hole that piezoelectric ceramic actuator I (1.4) power line stretches out; Said internal fixation cover II (1.6) and nut II (3.2) are provided with and are used for the through hole that piezoelectric ceramic actuator II (1.7) power line stretches out;
When piezoelectric ceramic actuator II (1.7) dead electricity; Piezoelectric ceramic actuator I (1.4) when electric; Piezoelectric ceramic actuator I (1.4) promotes push rod I (1.5) and spring push-rod I (2.7) moves right; Ceramic ball (2.8) is separated with step post I (2.3), and ceramic ball (2.8) engages with step post II (2.5), and flow is through the inclined hole on the through hole on working hole (A), the octal valve pocket (2.4), step post I (2.3) center hole, the six ports valve covers (2.2); Get into backwater mouth (O), valve body (2) is gone up working hole (A) and backwater mouth (O) can be through-flow;
When piezoelectric ceramic actuator I (1.4) dead electricity; Piezoelectric ceramic actuator II (1.7) when electric; Piezoelectric ceramic actuator II (1.7) promotion push rod II (1.8) and spring push-rod II (2.9) are to left movement; Ceramic ball (2.8) is separated with step post II (2.5), and ceramic ball (2.8) engages with step post I (2.3), and flow goes up the through hole on the inclined hole, step post II (2.5) center hole, octal valve pocket (2.4) of left end through water intake (P), spring valve pocket (2.6); Get into working hole (A), valve body (2) water intake (P) and working hole (A) can be through-flow.
2. the two-way opposed piezoelectric constant selector valve of pure water according to claim 1; It is characterized in that: be provided with O-ring seals I (2.14) between two ports valve covers (2.1) and the valve body (2); Add back-up ring I (2.16) sealing with O-ring seals II (2.15) between six ports valve covers (2.2) and the valve body (2); Add back-up ring II (2.18) sealing with O-ring seals III (2.17) between step post I (2.3) and the valve body (2); Add back-up ring III (2.20) sealing with O-ring seals IV (2.19) between step post II (2.5) and the valve body (2); Seal with O-ring seals V (2.21) between spring valve pocket (2.6) and the valve body (2); Add back-up ring IV (2.23) sealing through O-ring seals VI (2.22) between six ports valve covers (2.2) and the spring push-rod I (2.7), add back-up ring V (2.24) sealing through U-shaped sealing skeleton II (2.12) between spring valve pocket (2.6) and the spring push-rod II (2.9); U-shaped sealing skeleton I (2.10) is provided with back-up ring VI (2.25) with two ports valve cover (2.1) inwall annular projection contacting points; Body (2) top has water intake (P), working hole (A) and backwater mouth (O) inwall and is respectively arranged with O-ring seals VI (2.25), O-ring seals VII (2.27) and O-ring seals VIII (2.28).
3. the two-way opposed piezoelectric constant selector valve of pure water according to claim 1 is characterized in that: said outer fixing valve pocket I (1.1) and outer fixing valve pocket II (1.2) minimum diameter are less than the minimum diameter of valve body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210103151.0A CN102619801B (en) | 2012-04-10 | 2012-04-10 | Pure-water bidirectional opposed piezoelectric ceramic reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210103151.0A CN102619801B (en) | 2012-04-10 | 2012-04-10 | Pure-water bidirectional opposed piezoelectric ceramic reversing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102619801A true CN102619801A (en) | 2012-08-01 |
| CN102619801B CN102619801B (en) | 2014-10-29 |
Family
ID=46559936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210103151.0A Expired - Fee Related CN102619801B (en) | 2012-04-10 | 2012-04-10 | Pure-water bidirectional opposed piezoelectric ceramic reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102619801B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909587A (en) * | 2016-07-06 | 2016-08-31 | 上海衡拓液压控制技术有限公司 | Force feedback structure for electro-hydraulic servo valve |
| CN108679023A (en) * | 2018-03-31 | 2018-10-19 | 何旺成 | Water hydraulic spool-type valves |
| CN109296582A (en) * | 2018-09-28 | 2019-02-01 | 北京全路通信信号研究设计院集团有限公司 | Bidirectional differential pressure control device, electro-hydraulic switch machine and bidirectional differential pressure control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5738142A (en) * | 1996-08-09 | 1998-04-14 | Case Corporation | Pressure holding directional control valve |
| CN1587721A (en) * | 2004-08-04 | 2005-03-02 | 浙江大学 | Pure water electromagnetic ball valve |
| CN2729389Y (en) * | 2004-08-04 | 2005-09-28 | 浙江大学 | Water hydraulic magnetic switch valve |
| CN201288715Y (en) * | 2008-10-30 | 2009-08-12 | 杭州水处理技术研究开发中心有限公司 | Directional control valve driven by hydraulic pressure |
-
2012
- 2012-04-10 CN CN201210103151.0A patent/CN102619801B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5738142A (en) * | 1996-08-09 | 1998-04-14 | Case Corporation | Pressure holding directional control valve |
| CN1587721A (en) * | 2004-08-04 | 2005-03-02 | 浙江大学 | Pure water electromagnetic ball valve |
| CN2729389Y (en) * | 2004-08-04 | 2005-09-28 | 浙江大学 | Water hydraulic magnetic switch valve |
| CN201288715Y (en) * | 2008-10-30 | 2009-08-12 | 杭州水处理技术研究开发中心有限公司 | Directional control valve driven by hydraulic pressure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909587A (en) * | 2016-07-06 | 2016-08-31 | 上海衡拓液压控制技术有限公司 | Force feedback structure for electro-hydraulic servo valve |
| CN108679023A (en) * | 2018-03-31 | 2018-10-19 | 何旺成 | Water hydraulic spool-type valves |
| CN109296582A (en) * | 2018-09-28 | 2019-02-01 | 北京全路通信信号研究设计院集团有限公司 | Bidirectional differential pressure control device, electro-hydraulic switch machine and bidirectional differential pressure control method |
| CN109296582B (en) * | 2018-09-28 | 2020-09-08 | 北京全路通信信号研究设计院集团有限公司 | Bidirectional differential pressure control device, electro-hydraulic switch machine and bidirectional differential pressure control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102619801B (en) | 2014-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100535486C (en) | Piezo crystal drive high speed switch valve | |
| CN102619801B (en) | Pure-water bidirectional opposed piezoelectric ceramic reversing valve | |
| CN103899791A (en) | Proportional flow rotary valve for alternating-current servo motor direct drive type unloading | |
| CN202733123U (en) | Magnetorheological flow control valve | |
| CN201187585Y (en) | High speed switch valve driven by piezo crystal | |
| CN102619800A (en) | Pure water piezoelectric ceramic driving switching valve | |
| CN205036664U (en) | Unloading valve | |
| CN100419279C (en) | Piezoelectric crystal digital valve | |
| CN102635586B (en) | Pure water piezoelectric ceramic driven reversing valve | |
| CN201461603U (en) | Hydraulic control device of oil motive | |
| CN102364123B (en) | Cartridge type two-position four-way water hydraulic reversing valve | |
| CN205559396U (en) | Hydraulic one -way valve | |
| CN201013920Y (en) | Piezocrystal digital valve | |
| CN202301255U (en) | High-water-base two-position four-way electro-hydraulic reversing valve | |
| CN2729389Y (en) | Water hydraulic magnetic switch valve | |
| CN1300475C (en) | Pure water electromagnetic ball valve | |
| CN103148257A (en) | Magnetorheological flow control valve | |
| CN205937281U (en) | Spin control formula hydraulic directional control valve | |
| CN114593100A (en) | Plug-in type water pressure digital throttle valve with independently controlled load port and control method | |
| CN2729388Y (en) | Water hydraulic electromagnetic ball valve | |
| CN204420200U (en) | Cylinder-rotating three-way diverter valve | |
| CN209278261U (en) | A kind of position control system of hydraulic step actuator | |
| CN207945336U (en) | A kind of miniature high-speed digital valve | |
| CN102966784B (en) | Electromagnetic drive multistation valve | |
| CN112128458A (en) | Spring piston type closed system and switch type electro-hydraulic actuating mechanism driven by energy accumulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 |