CN103230849B - A kind of switch flow control type droplet ejection device based on magnetostrictive actuator - Google Patents
A kind of switch flow control type droplet ejection device based on magnetostrictive actuator Download PDFInfo
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Abstract
The invention discloses a kind of switch flow control type droplet ejection device based on magnetostrictive actuator, comprise control system, the band spray chamber of spout, the nozzle be connected with spray chamber spout, the fluid reservoir be connected with spray chamber and with spray chamber and the tank connected Compressed Gas supply module of liquid storage, push rod is provided with in spray chamber, one end of push rod coordinates with spray chamber spout, and the other end of push rod is provided with the magnetostrictive actuator driving push rod axially-movable.The Compressed Gas that the present invention provides using Compressed Gas supply module is as the power source of Liquid inject and spray chamber feed liquor, drop injection is carried out by Compressed Gas extruding liquid, jet power is large, when same nozzle internal diameter, the fluent material that viscosity is larger can be sprayed, and suitable material is in extensive range, nozzle not easily blocks.The present invention can in an environment of high temperature, long continuous firing, and be applicable to spray full-bodied liquid, and drop ejection frequency is high, volume controllability is high, and uniformity is good.
Description
Technical field
The present invention relates to the droplet deposition apparatus field to liquid, especially relate to a kind of switch flow control type droplet ejection device based on magnetostrictive actuator.
Background technology
Along with the development of society, the proposition of Conception of Sustainable Development, some new process technologies continue to bring out out, and droplet ejection technology is exactly the popular process technology of one wherein.Now relatively conventional is need based jet pattern in droplet ejection technology, droplet ejection has divided again multiple by its operation principle as required, Technical comparing maturation have piezoelectric microsphere spraying technique, air pressure direct drive droplet ejection technology and thermal bubble type droplet ejection technology.
Piezoelectric microsphere spraying technique is as piezoelectric ink jet printing technique, the scope of application is the widest, although it is strong to the control ability of liquid, easily realize high-precision injection, and injection frequency is high, but adopts piezoelectric ceramics to make drive source due to it, can not the high fluent material of bearing temperature, and full-bodied liquid can not be sprayed, liquids in general viscosity, lower than 20cps, makes the scope of sprayable fluent material greatly reduce.Secondly, the problem that in piezoelectric ink jet printing technique, existence one is general, the blocking of nozzle, makes to need the cost plenty of time to go cleaning, or directly damages printhead.Finally, in piezoelectric ink jet printing technique, need to regulate back pressure, make when not having driving force, liquid does not drip in the showerhead, and the adjustment of back pressure directly affects the injection of drop, but the adjustment of back pressure is difficult, and interference is many.
It is large that air pressure direct drive droplet ejection technology has jet power, and can spray full-bodied fluent material, suitable material is in extensive range, not easily can block in fluent material containing a large amount of solia particles.But in course of injection, solution is filled in spray chamber during beginning, along with constantly carrying out of process, liquid volume in spray chamber reduces gradually, gas volume in spray chamber constantly increases, under same actuation time and pressure, the droplet size ejected can reduce gradually, make the volume accuracy of liquid droplets and uniformity restive.Secondly, the capacity of liquid droplets is determined by spray chamber size, usually smaller, can not continuous firing for a long time.Finally, in course of injection, the gas pressure pulse working time is difficult to accurate control.
Thermal bubble type droplet ejection technology has higher reliability because not having solid movable part, and cost is low, of many uses.Hot bubble type micro-spray system comprises the emission cavity of array and the auxiliary integrated circuit controlled.Emission cavity is wherein exactly tiny actuator.The concrete physical process of spraying is: Current Heating resistance film and then the fluid micellar of vaporizing in emission cavity, when bubble is grown up rapidly generation high pressure, and transmit momentum to surrounding fluid, order about fluid and launch away from nozzle, wherein, whole process only has fluid to be movable part.
Summary of the invention
The invention provides a kind of switch flow control type droplet ejection device based on magnetostrictive actuator, the Compressed Gas provided using Compressed Gas supply module is as the power source of Liquid inject and spray chamber feed liquor, magnetostrictive actuator can control the pore size between push rod and spray chamber spout, thus can control the size of atomizing of liquids flow.
A kind of switch flow control type droplet ejection device based on magnetostrictive actuator, comprise control system, the band spray chamber of spout, the nozzle be connected with spray chamber spout, the fluid reservoir be connected with described spray chamber and with described spray chamber and the tank connected Compressed Gas supply module of liquid storage, push rod is provided with in described spray chamber, one end of described push rod coordinates with described spray chamber spout, and the other end of described push rod is provided with the magnetostrictive actuator driving described push rod axially-movable.
In the present invention, fluid reservoir stores liquid to be sprayed, Compressed Gas supply module output squeezing gas is to fluid reservoir, by liquid to be sprayed press-in spray chamber, after liquid to be sprayed is pressed into spray chamber, Compressed Gas supply module output squeezing gas, to spray chamber, makes the liquid in spray chamber spray from nozzle.Can be controlled the axially-movable of push rod by magnetostrictive actuator, spray chamber spout is withstood in the one end coordinated with spray chamber spout when push rod, spray chamber spout can be sealed; Between one end that push rod coordinates with spray chamber spout and spray chamber spout, leave space, the liquid in spray chamber, from the ejection of spray chamber spout, can control the pore size between push rod and spray chamber spout by magnetostrictive actuator, thus controls the size of atomizing of liquids flow.
As preferably, described magnetostrictive actuator comprises: deviate from one end of described spray chamber spout affixed magnetostriction element, the permanent magnet being arranged symmetrically in described magnetostriction element both sides and the coil be wrapped in around described permanent magnet with described push rod.Around magnetostriction element, produce magnetic field by coil and permanent magnet, make magnetostriction element shorten under the influence of a magnetic field or extend.Described coil is controlled by control system by current control module, control system is by the size of electric current in current control module control coil, thus the size of controlling magnetic field intensity, and then can the size of control gap, control the flow of liquid, realize the object of switch flow-control.
For having the magnetostriction element shortening attribute, when magnetostrictive actuator does not work, spray chamber spout is just withstood in one end that push rod coordinates with spray chamber spout, thus is sealed by spray chamber spout, liquid in spray chamber cannot spray from spray chamber spout, more cannot spray from nozzle.When magnetostrictive actuator works, magnetostriction element shortens, retract from spray chamber spout in the one end driving push rod to coordinate with spray chamber spout, space is there is between one end that push rod is coordinated with spray chamber spout and spray chamber spout, liquid in spray chamber is from the ejection of spray chamber spout, and then from nozzle ejection, can the size of control gap by magnetostrictive actuator, thus control the size of atomizing of liquids flow.
For having the magnetostriction element extending attribute, when magnetostrictive actuator works, magnetostriction element extends, spray chamber spout is just withstood after extending in one end that push rod coordinates with spray chamber spout, thus spray chamber spout is sealed, liquid in spray chamber from the ejection of spray chamber spout, more cannot cannot spray by nozzle.When magnetostrictive actuator does not work, push rod returns to original dimensions length, retract from spray chamber spout in the one end driving push rod to coordinate with spray chamber spout, gap is there is between one end that push rod is coordinated with spray chamber spout and spray chamber spout, liquid in spray chamber is from the ejection of spray chamber spout, and then from nozzle ejection, can the size of control gap by magnetostrictive actuator, thus control the size of atomizing of liquids flow.
As preferably, the exit of described Compressed Gas supply module is provided with total pressure regulator valve, described total pressure regulator valve is controlled by described control system, can the total pressure regulator valve of regulable control by control system, total pressure regulator valve can regulate the pressure of the Compressed Gas exported from Compressed Gas supply module, after adjustment, then transfer to spray chamber and fluid reservoir, thus better meet instructions for use.
As preferably, described Compressed Gas supply module is connected with described spray chamber and fluid reservoir with the second branch road respectively by the first branch road, namely described Compressed Gas supply module is connected with described spray chamber by the first branch road, described Compressed Gas supply module is connected with described fluid reservoir by the second branch road, described first branch road is provided with the first magnetic valve, described second branch road is provided with the second magnetic valve, and described first magnetic valve and the second magnetic valve are all controlled by described control system.Controlled the opening and closing of the first magnetic valve and the second magnetic valve by control system, thus control the break-make of the first branch road and the second branch road.
Further preferably, described first branch road is provided with the first pressure regulator valve, described first pressure regulator valve is controlled by described control system, can regulable control first pressure regulator valve by control system, first pressure regulator valve can regulate the pressure of Compressed Gas on the first branch road, after adjustment, then transfer to spray chamber, thus the fluid flow by regulating the pressure controllable system of Compressed Gas to spray on definite meaning.
As preferably, the top of described spray chamber is connected with exhaust outlet, and described exhaust ports is provided with exhaust solenoid valve, and described exhaust solenoid valve is controlled by described control system.Controlled the opening and closing of exhaust solenoid valve by control system, when by liquid to be sprayed in fluid reservoir press-in spray chamber, need to open exhaust solenoid valve, be exhausted, make liquid to be sprayed in fluid reservoir be pressed into spray chamber smoothly.When the liquid in spray chamber is to be sprayed, need to close exhaust solenoid valve, Compressed Gas supply module output squeezing gas, to spray chamber, makes the liquid in spray chamber spray from nozzle.
As preferably, described fluid reservoir and spray chamber are provided with liquid flows to spray chamber check valve from fluid reservoir, and described check valve is controlled by described control system.After using check valve, under the effect of Compressed Gas supply module, successfully liquid can be pressed into spray chamber from fluid reservoir, and can prevent spray intracavity liquid from flowing backwards to fluid reservoir.Control system controls the opening and closing of check valve, controls to spray chamber conveying liquid fluid reservoir.
As preferably, the level detection module be connected with described control system is provided with in described spray chamber, described level detection module comprises signal emitting-source for sending from signal to liquid level in spray chamber and sends and the signal receiving end of signal after liquid level reflection for receiving described signal emitting-source, along with rising or the decline of liquid level in spray chamber, within the scope of certain liquid level, the signal that signal emitting-source sends is after liquid level reflection, signal receiving end can receive, when liquid level is higher than this altitude range, signal receiving end cannot receive the signal that signal emitting-source sends, fluid reservoir then at this moment should be stopped to carry liquid to spray chamber, when liquid level is lower than this altitude range, signal receiving end cannot receive the signal that signal emitting-source sends, then at this moment atomizing of liquids should be stopped, fluid reservoir is needed to carry liquid to spray chamber.
As preferably, described nozzle is threaded with described spray chamber spout, the one in namely removably connecting, adopt removable designs of nozzles, make nozzle removal very convenient, to some extent solve the problem of spray nozzle clogging, nozzle that is that can clean and change obstruction easily or that damage.Further preferably, between described nozzle and described spray chamber spout, be provided with sealing ring, increase sealing, prevent liquid from flowing out.
Compared with prior art, tool of the present invention has the following advantages:
The present invention is based on the switch flow control type droplet ejection device of magnetostrictive actuator, the Compressed Gas provided using Compressed Gas supply module is as the power source of Liquid inject and spray chamber feed liquor, drop injection is carried out by Compressed Gas extruding liquid, jet power is large, when same nozzle internal diameter, can spray the fluent material that viscosity is larger, and suitable material is in extensive range, nozzle not easily blocks.By the design of liquid supply process, can once spray a large amount of drops, be convenient to long work.In course of injection, Compressed Gas exists always, avoids the problem that the gas pressure pulse working time in conventional gas Direct driver is difficult to accurately control.Magnetostrictive actuator can control the pore size between push rod and spray chamber spout, thus very well can control the size of atomizing of liquids flow, drop can be realized as required, the high accuracy injection that volume is controlled, reproducible, and due to the characteristic of magnetostrictive actuator, the injection frequency of drop is high, combine the advantage of spraying continuously simultaneously.The present invention is based on the switch flow control type droplet ejection device of magnetostrictive actuator, can in an environment of high temperature, long continuous firing, be applicable to spray full-bodied liquid, and drop ejection frequency is high, volume controllability is high, and uniformity is good.
The present invention is based on the switch flow control type droplet ejection device of magnetostrictive actuator, in preferred technical scheme, level detection module is provided with in described spray chamber, by liquid level being remained in a scope expected, avoid Problems existing in conventional gas Direct driver, the volume accuracy of liquid droplets and uniformity are well controlled.By the design of removable nozzle module, nozzle that is that can clean and change blocking easily or that damage, solves the problem of spray nozzle clogging well.
Accompanying drawing explanation
Fig. 1 is the structural representation of the switch flow control type droplet ejection device that the present invention is based on magnetostrictive actuator;
Fig. 2 is concrete structure schematic diagram in spray chamber of the present invention;
Fig. 3 is the sectional view along A-A hatching in Fig. 2;
In figure, 1 is Compressed Gas supply module, and 2 is total pressure regulator valve, and 3 is T connector, 4 is the first pressure regulator valve, and 5 is the first magnetic valve, and 6 is T connector, and 7 is exhaust solenoid valve, 8 is signal emitting-source, and 9 is signal receiving end, and 10 is spray chamber, and 11 is check valve, 12 is fluid reservoir, and 13 is the second magnetic valve, and 100 is flow-control module, and 101 is magnetostriction element, 102 is coil, and 103 is permanent magnet, and 104 is cavity volume, and 105 is push rod, 201 is nut, and 202 is sealing ring, and 203 is nozzle.
Detailed description of the invention
As shown in Figure 1, for the switch flow control type droplet ejection device based on magnetostrictive actuator, comprise the spray chamber 10 of band spout, the nozzle 203 be connected with spray chamber spout, the fluid reservoir 12 be connected with spray chamber 10, the Compressed Gas supply module 1 be connected with spray chamber 10 and fluid reservoir 12 and control system.Flow-control module 100 is provided with in spray chamber 10.Spray chamber 10 is cylindrical.
The exit of Compressed Gas supply module 1 is provided with total pressure regulator valve 2, and total pressure regulator valve 2 is controlled by control system.The outlet of total pressure regulator valve 2 is connected with T connector 3, one end of T connector 3 is connected with the outlet of total pressure regulator valve 2, the other two ends of T connector 3 are connected with the first branch road and the second branch road respectively, first branch road is connected with spray chamber 10 and fluid reservoir 12 respectively with the second branch road, namely the first branch road is connected with spray chamber 10, second branch road is connected with fluid reservoir 12, first branch road is provided with the first magnetic valve 5, first branch road is provided with the first pressure regulator valve 4 between T connector 3 and the first magnetic valve 5, second branch road is provided with the second magnetic valve 13, first magnetic valve 5, first pressure regulator valve 4 and the second magnetic valve 13 are controlled by control system.First branch road is connected to T connector 6 on spray chamber, and the two ends of T connector 6 are for connecting the first branch road, and the 3rd end of T connector 6 is as the exhaust outlet of spray chamber, and be connected with exhaust solenoid valve 7, exhaust solenoid valve 7 is controlled by control system.Fluid reservoir 12 and spray chamber 10 are provided with liquid flows to spray chamber 10 check valve 11 from fluid reservoir 12, and check valve 11 is controlled by control system.
Be provided with the level detection module be connected with control system in spray chamber 10, level detection module comprises the signal emitting-source 8 for sending signal to liquid level in spray chamber 10 and sends for Received signal strength emission source 8 and the signal receiving end 9 of signal after liquid level reflection.
Compressed Gas supply module 1 specifically can select air compressor, compressed air is produced by air compressor, after the pressure regulation of total pressure regulator valve 2, compressed air is flowed to the first pressure regulator valve 4 by T connector 3, after the pressure regulation again of the first pressure regulator valve 4, meet the requirements of compressed air by the first magnetic valve 5, flow into spray chamber 10 through T connector 6, realize compressed-air actuated supply.In this course, exhaust solenoid valve 7 keeps closed condition always.By the adjustment to the first pressure regulator valve 4, the result that drop sprays can be changed.
Liquid supply in spray chamber 10, passes into fluid reservoir 12 by the second magnetic valve 13 by the compressed air after being regulated by total pressure regulator valve 2, and the liquid promoted in fluid reservoir 12 flows into spray chamber 10 through check valve 11, realizes the supply of liquid.Total pressure regulator valve 2 directly affects the supply rate of liquid.
Exhaust module adopts exhaust solenoid valve 7, and exhaust solenoid valve 7 is connected with one end of T connector 6, by closing the first magnetic valve 5, open exhaust solenoid valve 7, in spray chamber 10 liquid supply under, liquid level in spray chamber 10 rises, air is discharged through exhaust solenoid valve 7, realizes the supply of liquid.
First magnetic valve 5, exhaust solenoid valve 7 are all connected with the valve control module in control system with the second magnetic valve 13, by the control of valve control module, and switch electromagnetic valve in suitable.
Level detection module is for detecting liquid level in spray chamber 10, when liquid level is low at the beginning, signal emitting-source 8 sends signal, signal propagates on liquid level, after liquid level reflection, signal is positioned at the below of signal receiving end 9, therefore, do not receive signal, when liquid level rises to set height, signal arriving signal receiving terminal 9 after liquid level reflection, signal receiving end 9 data are to valve control module, within the scope of one section of liquid level, signal can arriving signal receiving terminal 9, when liquid level exceedes certain altitude, signal receiving end 9 does not receive signal again.For different liquid, this module can detect the height of liquid level, realize identical liquid level, level detection module is connected with control system, the signal feedback that level detection module detects is to control system, control system controls the first magnetic valve 5, exhaust solenoid valve 7 and the second magnetic valve 13, total pressure regulator valve 2, first pressure regulator valve 4 and magnetostrictive actuator according to the signal of this feedback, controls liquid injection process.
As shown in Figures 2 and 3, flow-control module 100 comprises and is arranged on push rod 105 in spray chamber 10 and magnetostrictive actuator, and one end of push rod 105 coordinates with spray chamber spout, and this end is for falling truncated cone shape, spray chamber spout is also for falling truncated cone shape, and both can cooperatively interact; The other end of push rod 105 drives push rod axially-movable by magnetostrictive actuator, and this end winding support is provided with magnetostriction element 101.
Magnetostrictive actuator comprises: magnetostriction element 101, the permanent magnet 103 be arranged symmetrically with on magnetostriction element 101 both sides and around permanent magnet 103 winding around 102, coil 102 is connected with the current control module in control system by wire, the lower end of magnetostriction element 101 is connected with push rod 105, the lower end of push rod 105 is for falling truncated cone shape, cavity volume 104 is by magnetostriction element 101, permanent magnet 103, coil 102 and push rod 105 cover, make flow-control module 100 and the fluid separation applications in spray chamber 10, only have lower end and the liquid comes into contact of push rod 105, push rod 105 can slide up and down by cavity volume 104 relatively.
As shown in Figure 1, Figure 2 and Figure 3, magnetostriction element 101 can be rareearth super magnetostrictive element, has the attribute of shortening, and its dilatation amount is large, and frequency response is fast, and good stability, reliability is high, its Magnetostriction not time to time change.Initial time, the lower end of push rod 105 overlaps with spray chamber 10 circular conical surface of inner wall, when passing through current control module, on coil 102, electric current is passed to through wire, a magnetic field can be produced around coil 102, under the influence of a magnetic field, magnetostriction element 101 shortens along push rod 105 direction, push rod 105 is driven to move upward, make to produce gap between push rod 105 and spray chamber 10 inwall, thus make liquid flow to nozzle 203 through gap, when turn-off current, magnetic field does not exist, magnetostriction element 101 recovers its original size, push rod 105 is driven to move downward, gap is eliminated, liquid no longer flows to nozzle 203.By controlling the size of electric current, can the size of control gap, thus control the flow of liquid, realize the object of switch flow-control.
As shown in Figure 2, nozzle 203 is threaded with spray chamber spout, by nut 201, nozzle 203 is threaded on spray chamber spout, namely nut 201 is coaxially connected with threaded engagement with spray chamber 10, nozzle 203 is fixed, be provided with sealing ring 202 between nozzle 203 and spray chamber spout, between nut 201 and spray chamber 10, be placed with sealing ring 202, prevent liquid from flowing out.Unique nozzle module design, can change nozzle easily.
Liquid supply process of the present invention is as follows: at the beginning when liquid level is low, signal receiving end 9 does not receive signal, send out data to the valve control module in control system, valve control module is by after process, send instructions to the first magnetic valve 5, close the opening of the first magnetic valve 5, compressed air is stoped to enter spray chamber 10, then valve control module sends instructions supply and exhaust magnetic valve 7, open exhaust solenoid valve 7, final valve control module sends instructions to the second magnetic valve 13, the second magnetic valve 13 is driven to work, Compressed Gas enters fluid reservoir 12 by the second magnetic valve 13, it is inner that the liquid promoted in fluid reservoir 12 flows to spray chamber 10 through check valve 11, liquid level is made to increase, air in spray chamber 10 is discharged through exhaust solenoid valve 7.When signal receiving end 9 receives signal, the opening that valve control module controls the second magnetic valve 13 reduces by half, and reduces the speed that liquid flows into spray chamber 10, but liquid level continues to rise.When signal receiving end 9 does not receive signal, now liquid level reaches requirement, so valve control module closes the second magnetic valve 13, liquid level stops rising, when closedown exhaust solenoid valve 7, open the first magnetic valve 5, compressed air enters spray chamber 10 through the first magnetic valve 5, start liquid drop jetting process, liquid level starts to decline.When signal receiving end 9 is through first receiving signal, when then not receiving signal, show that now liquid level is too low, so the current control module in control system stops liquid drop jetting process, close the first magnetic valve 5, open exhaust solenoid valve 7, finally open the second magnetic valve 13, start the liquid supply process of a new round, circulate and so forth, liquid level is remained in an altitude range expected.Check valve 11 can stop liquid to flow into fluid reservoir 12 from spray chamber 10, realizes effectively isolating.
Liquid drop jetting process of the present invention is as follows: after undercoating liquid supply process, liquid level is in the altitude range of specifying, valve control module controls the first magnetic valve 5 and opens, compressed air enters spray chamber 10 through T connector 6, when moving upward under the effect of the push rod 105 in flow-control module 100 in current control module, liquid is under compressed-air actuated squeezing action, nozzle 203 is flowed to through the gap between spray chamber 10 inwall and push rod 105, by controlling moving up and down of push rod 105, realize the need based jet of drop.In this course, the first magnetic valve 5 is opened always, and namely compressed air exists always, avoids the problem that the gas pressure pulse working time in conventional gas Direct driver is difficult to accurately control.When in course of injection, when liquid level is lower than setting value, the push rod 105 that current control module controls in flow-control module 100 recovers its initial position, stop drop spraying, then start liquid supply process, until after supply process terminates, just repeat action above, start to continue to spray.Whole device can in an environment of high temperature, long continuous firing, and be applicable to spray full-bodied liquid, and drop ejection frequency is high, volume controllability is high, and uniformity is good.
Claims (3)
1. the switch flow control type droplet ejection device based on magnetostrictive actuator, it is characterized in that, comprise control system, the band spray chamber of spout, the nozzle be connected with spray chamber spout, the fluid reservoir be connected with described spray chamber and with described spray chamber and the tank connected Compressed Gas supply module of liquid storage, push rod is provided with in described spray chamber, one end of described push rod coordinates with described spray chamber spout, and the other end of described push rod is provided with the magnetostrictive actuator driving described push rod axially-movable;
Described magnetostrictive actuator comprises: deviate from one end of described spray chamber spout affixed magnetostriction element, the permanent magnet being arranged symmetrically in described magnetostriction element both sides and the coil be wrapped in around described permanent magnet with described push rod;
The exit of described Compressed Gas supply module is provided with total pressure regulator valve, and described total pressure regulator valve is controlled by described control system;
Described Compressed Gas supply module is connected with described spray chamber by the first branch road, be connected with described fluid reservoir by the second branch road, described first branch road is provided with the first magnetic valve, described second branch road is provided with the second magnetic valve, described first magnetic valve and the second magnetic valve are all controlled by described control system, described first branch road is provided with the first pressure regulator valve, and described first pressure regulator valve is controlled by described control system;
The top of described spray chamber is connected with exhaust outlet, and described exhaust ports is provided with exhaust solenoid valve, and described exhaust solenoid valve is controlled by described control system;
Described fluid reservoir and spray chamber are provided with liquid flows to spray chamber check valve from fluid reservoir, and described check valve is controlled by described control system;
Be provided with the level detection module be connected with described control system in described spray chamber, described level detection module comprises signal emitting-source for sending from signal to liquid level in spray chamber and sends and the signal receiving end of signal after liquid level reflection for receiving described signal emitting-source.
2. the switch flow control type droplet ejection device based on magnetostrictive actuator according to claim 1, it is characterized in that, described nozzle is threaded with described spray chamber spout.
3. the switch flow control type droplet ejection device based on magnetostrictive actuator according to claim 2, is characterized in that, be provided with sealing ring between described nozzle and described spray chamber spout.
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| CN102242742A (en) * | 2011-07-11 | 2011-11-16 | 南京航空航天大学 | Two-stage jet nozzles series super-magnetostrictive jet servo valve and operating method thereof |
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| JPH10331741A (en) * | 1997-06-02 | 1998-12-15 | Toyota Motor Corp | Super-magnetostriction type fuel injection valve |
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| CN101131590A (en) * | 1998-01-15 | 2008-02-27 | 戈斯国际公司 | Liquid level control system |
| CN201186250Y (en) * | 2008-05-16 | 2009-01-28 | 中南大学 | Ultra-magnetostrictive driving glue solution injector |
| CN102123796A (en) * | 2008-09-12 | 2011-07-13 | Kdf株式会社 | Water-spouting device |
| CN201531479U (en) * | 2009-11-03 | 2010-07-21 | 南京航空航天大学 | Large-flow jet servo valve driven by ultra-magnetostrictive actuator |
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