CN107882797A - Lateral open-type high-speed piezoelectric switch valve - Google Patents
Lateral open-type high-speed piezoelectric switch valve Download PDFInfo
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- CN107882797A CN107882797A CN201711088726.5A CN201711088726A CN107882797A CN 107882797 A CN107882797 A CN 107882797A CN 201711088726 A CN201711088726 A CN 201711088726A CN 107882797 A CN107882797 A CN 107882797A
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- 239000000919 ceramic Substances 0.000 claims abstract description 58
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 238000007789 sealing Methods 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 239000000565 sealant Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 229910052573 porcelain Inorganic materials 0.000 claims 1
- 230000004044 response Effects 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 7
- 206010016256 fatigue Diseases 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/14—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with ball-shaped valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/12—Covers for housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/004—Actuating devices; Operating means; Releasing devices actuated by piezoelectric means
Abstract
The invention provides a kind of lateral open-type high-speed piezoelectric switch valve, including valve pocket, the axial step hole of one end open is provided with valve pocket, the side of one end not being open of shoulder hole is provided with valve outlet, installation valve seat in shoulder hole, valve body is installed in valve pocket below valve seat, and using being threadedly coupled and sequentially compressing valve body, valve seat between cover plate and valve pocket, valve element is installed on the inside of valve body；Valve inner is radially provided with horizontal piezoelectric ceramics groove, and piezoelectric ceramics is placed in piezoelectric ceramics groove and the one end stretched out and valve element are tangent；Power line is placed in the coaxial deep hole of valve pocket, valve seat and valve body and is connected with piezoelectric ceramics.During without driving voltage, valve element is pressed together on valve base center hole by high-voltage oil liquid, and valve is closed；When applying driving voltage, piezoelectric ceramics, which extends, causes valve element to be rotated to side, and valve is opened.The present invention uses lateral open-type, no return spring, solves the problems, such as that electromagnetic switch valve response speed is slow, Opening pressure is big, return spring easily fails.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, in particular to a kind of lateral open-type high-speed piezoelectric switch valve.
Background technology
High-speed switch valve is that the one kind to grow up the 1980s has small volume, control flexible, simple in construction, anti-
The electrichydraulic control conversion element for the features such as pollution capacity is strong, reliability is high and price is cheap and electronic circuit is worked good.As long as control
Pulse frequency or pulse width processed, just flow can continuously be controlled.
In hydraulic control system, high-speed switch valve plays very important effect, and its performance directly influences whole system
The performance of system.The problem of traditional electromagnetism high-speed switch valve generally existing precision is low and response speed is slow, the present invention use piezoelectricity
Material is as drive force source, so as to meet the requirement of high-precision hydraulic system
Ultrasound-driven, without electromagnetism winding and magnetic circuit, energy is changed without electromagnetic interaction compared with conventional motors drive,
But the inverse piezoelectric effect of piezoelectric ceramics is utilized, there is simple in construction, small-size light-weight, fast response time, noise is low, low speed turns greatly
Square, control feature is good, positioning precision is high；Not by magnetic interference, move the advantages that accurate, also there is low temperature resistant, vacuum etc. in addition
The characteristics of adapting to space environment.
The present invention is plug-in, convenient for installation and maintenance；Using lateral open-type, using lever principle, valve is greatly reduced
The opening force of core；Valve element utilizes the curved surface and oil liquid pressure self-return of valve inner, no return spring, it is easily tired to solve spring
The problem of labor fails.
The positioning precision of lateral open-type high-speed piezoelectric switch valve valve port opening is high, and resolution ratio is up to nanoscale.Laterally open
Opening formula high-speed piezoelectric switch valve will obtain extensively should in some precision instruments, Medical Devices and semiconductor fabrication
With.
Due to the spy such as strong, fast response time, reliability height with lateral open-type high-speed piezoelectric switch valve anti-pollution ability
Property, it is the pass in the hydraulic systems in field such as space flight and aviation dynamical system, space station, ability converting apparatus, underwater work system
Key member, will the extensive use in all kinds of hydraulic systems more than.
The content of the invention
It is existing to solve using Piezoelectric Ceramic the invention provides a kind of lateral open-type high-speed piezoelectric switch valve
Electromagnetic switch valve is using limited, the response frequency of electromagnet is not high enough, noise in by environment such as electromagnetic interference, low temperature, vacuum
The problems such as big；Using lateral open-type, using lever principle, the opening force of valve element is greatly reduced, is opened with solving existing electromagnetism
The problem of closing valve opening force deficiency；Valve element utilizes the curved surface and oil liquid pressure self-return of valve inner, no return spring, with solution
Certainly the problem of existing electromagnetic switch valve spring fatiguability failure.
To achieve these goals, the invention provides a kind of lateral open-type high-speed piezoelectric switch valve, including valve pocket, valve
Seat, valve body cover plate and piezoelectric ceramics, the axial direction of valve pocket are provided with the shoulder hole of one end open, the bottom of shoulder hole and valve pocket
The valve outlet opened up on side is connected；Cover plate is threadedly coupled with the openend of shoulder hole and sequentially closely presses valve body and valve seat
In shoulder hole, in the one side fitting of valve seat and the step surface of shoulder hole, valve body is internally provided with the space for accommodating valve element
And both ends open, valve element are circular steel ball, the axial centre of valve seat is provided with valve base center hole, and the axial centre of cover plate is provided with
The diameter of cover central hole formation valve inlet, valve base center hole and cover central hole is less than the diameter of valve element, and switch valve is not operating
When, valve element is held up by high-voltage oil liquid and withstood on valve base center hole；The inner radial horizontal direction of valve body offers piezoelectric ceramics groove,
Piezoelectric ceramics is installed in piezoelectric ceramics groove and one end and the bottom land apical grafting of piezoelectric ceramics groove, valve element are peaked on valve base center hole
When, the middle part plane tangent for stretching out one end and valve element horizontal direction of piezoelectric ceramics, power line is by through valve pocket, valve
One end of the close piezoelectric ceramics groove bottom land of seat, the deep hole on valve body and piezoelectric ceramics connects, and piezoelectric ceramics is in driving voltage
Effect is lower to be extended so as to promote valve element to be rotated to side.
Further, power-assisted steel ball is provided with inside valve pocket, the inner space of power-assisted steel ball insertion valve body is simultaneously installed on piezoelectricity
The top of the side of ceramics.
Further, power-assisted steel ball is corresponded on valve body and is provided with power-assisted steel-ball limiting groove, the side of valve body is provided with power-assisted
In steel-ball limiting groove, power-assisted steel-ball limiting groove limitation power-assisted steel ball along the circumferential direction moves.
Further, the both ends of the periphery of valve pocket have first annular groove and the 3rd annular groove, first annular
Groove and the 3rd annular groove are respectively arranged at the both sides of valve outlet, and the first sealing ring and the 3rd sealing ring are respectively arranged in first
It is used to realize switch valve and sealing during external connection in annular groove and the 3rd annular groove；One towards valve seat of shoulder hole
The second annular groove is provided with side stage terrace, the second sealing ring is placed in the second annular groove, between valve pocket and valve seat
Sealing.
Further, lateral open-type high-speed piezoelectric switch valve uses inserting form, and valve pocket is provided with first annular groove
One end external diameter be more than provided with the 3rd annular groove one end, one end end provided with first annular groove of valve pocket is provided with cone angle
Transition.
Further, one end bottom provided with valve outlet of the shoulder hole of valve pocket is provided with dashpot, for reducing from valve element
Place sprays the hydraulic power of high-voltage oil liquid, reduces the impact to valve pocket bottom and noise；Open one end of the close dashpot of valve outlet
There is valve outlet collecting tank, for collecting the fluid of buffered groove outflow.
Further, the first axial power supply string holes are provided with valve pocket, axial second source string holes, valve are provided with valve seat
The 3rd axial power supply string holes are provided with body, power line sequentially runs through the first power supply string holes, second source string holes and the 3rd power supply
String holes is connected with piezoelectric ceramics, gap sealant sealing between the first power supply string holes and power line.
Further, the valve base center hole outlet side of valve seat is provided with valve seat outlet liquid separation groove, and cover central hole arrival end is opened
There is cover plate entrance collecting tank, be advantageous to fluid access switch valve, the port of export of cover central hole is provided with cover plate outlet liquid separation groove, had
Beneficial to the surrounding that pressure oil liquid is dispersed to valve element.
Further, valve inner is spherical valve body first surface close to one end of cover plate, is provided when being opened for valve element
Motion space；Valve inner is close to one end of valve seat and the side away from piezoelectric ceramics is provided with the curved surface of valve body second of taper, has
Uniformly and valve element is held up along valve element surrounding beneficial to pressure oil liquid.
Apply the technical scheme of the present invention, high-voltage oil liquid enters at valve inlet, promotes steel ball valve element to withstand valve seat center
Hole so that sealing is just formed between valve element and valve base center hole, fluid cannot continue flow forward, and switch valve, which is in, closes shape
State；When needing the valve to open, lead to high frequency voltage to piezoelectric ceramics, axial elongation can occur for piezoelectric ceramics, promote valve element around with valve seat
One fulcrum of centre bore contact, the gravity of power-assisted steel ball plays power-assisted effect, so in piezoelectric ceramics and power-assisted steel ball
Collective effect under so that valve element rotates to side, and high-voltage oil liquid flows to valve outlet by valve base center hole；During power-off, piezoelectricity
Ceramic shrinkage, high-voltage oil liquid promote valve element to be blocked valve base center hole entrance so that switch valve to valve base center hole central motion
It is off state.Compared with prior art, the beneficial effects of the invention are as follows using Piezoelectric Ceramic, solves existing electromagnetism
Switch valve is applying the problem of limited in by environment such as electromagnetic interference, low temperature, vacuum, Piezoelectric Ceramic response frequency is high, makes an uproar
Sound is small；Using lateral open-type, using lever principle, the opening force of valve element is greatly reduced, solves existing electromagnetic switch valve
The problem of opening force deficiency；Valve element utilizes the curved surface and oil liquid pressure self-return of valve inner, no return spring, to solve now
There is the problem of electromagnetic switch valve spring fatiguability failure.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.
In the accompanying drawings：
Fig. 1 shows the overall structure diagram of the lateral open-type high-speed piezoelectric switch valve of the present invention；
Fig. 2 shows the elevation cross-sectional view in Fig. 1；
Fig. 3 shows the profile of the valve pocket in Fig. 2；
Fig. 4 shows the profile of the valve seat in Fig. 2；
Fig. 5 shows the profile of the valve body in Fig. 2；
Fig. 6 shows the profile of the cover plate in Fig. 2；
Fig. 7 shows the force structure schematic diagram of the valve element in Fig. 2；
Wherein, above-mentioned accompanying drawing marks including the following drawings：
1st, valve pocket；2nd, power line；3rd, valve seat；4th, power-assisted steel ball；5th, piezoelectric ceramics；6th, valve body；7th, valve inlet；8th, cover plate；9th,
Three sealing rings；10th, valve element；11st, the second sealing ring；12nd, valve outlet；13rd, the first sealing ring；14th, valve outlet collecting tank；15th, delay
Jet-bedding；16th, the first power supply string holes；17th, first annular groove；18th, the second annular groove；19th, the 3rd annular groove；20th, valve seat
Export liquid separation groove；21st, valve base center hole；22nd, second source string holes；23rd, valve body first surface；24th, power-assisted steel-ball limiting groove；
25th, the 3rd power supply string holes；26th, piezoelectric ceramics groove；27th, the curved surface of valve body second；28th, cover plate outlet liquid separation groove；29th, cover plate central
Hole；30th, cover plate entrance collecting tank；31st, piezoelectric ceramics thrust moment；32nd, high-voltage oil liquid resistance torque；33rd, power-assisted steel ball gravity
Component torque；34th, the component of power-assisted steel ball gravity；35th, piezoelectric ceramics thrust.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It is existing to solve using Piezoelectric Ceramic the invention provides a kind of lateral open-type high-speed piezoelectric switch valve
Electromagnetic switch valve is using limited, the response frequency of electromagnet is not high enough, noise in by environment such as electromagnetic interference, low temperature, vacuum
The problems such as big；Using lateral open-type, using lever principle, the opening force of valve element is greatly reduced, is opened with solving existing electromagnetism
The problem of closing valve opening force deficiency；Valve element utilizes the curved surface and oil liquid pressure self-return of valve inner, no return spring, with solution
Certainly the problem of existing electromagnetic switch valve spring fatiguability failure.
As shown in Figures 1 to 6, the inside of valve pocket 1 is provided with shoulder hole and first annular groove 17, the second annular groove 18, the
Three annular grooves 19, the first sealing ring 13, the second sealing ring 11, the 3rd sealing ring 9 are respectively provided with groove, and be provided with valve outlet
12nd, dashpot 15, the first power supply string holes 16；Installation valve seat 3, valve element 10 are placed under valve base center hole 21 in the shoulder hole of valve pocket 1
Side, valve body 6 are installed in valve pocket 1 positioned at the lower section of valve seat 3, when switch valve works, held up valve element 10 by high-voltage oil liquid, and keep
Valve base center hole 21 is into closed mode；Valve body 6 is installed in the shoulder hole of valve pocket 1, and immediately below valve seat 3, the inside of valve body 6 is axially
Power-assisted steel-ball limiting groove 24 is provided with, is radially provided with piezoelectric ceramics groove 26, piezoelectric ceramics 5 is placed in piezoelectric ceramics groove 26, and with
Valve element 10 is tangent；Power-assisted steel ball 4 is embedded in the gap between valve body 6 and power-assisted steel-ball limiting groove 24；Power-assisted steel-ball limiting groove
24 limitation power-assisted steel balls 4 along the circumferential direction move；Coaxial first power supply string holes 16, second are provided with valve pocket 1, valve seat 3 and valve body 6
The power supply string holes 25 of power supply string holes 22 and the 3rd, power line 2 is sequentially through the first power supply string holes 16, second source string holes 22 and the 3rd
Power supply string holes 25, and be connected with piezoelectric ceramics 5, the gap sealant sealing between the first power supply string holes 16 and power line 2；Lid
Plate 8 is installed on the bottom of valve pocket 1, uses and is threadedly coupled between valve pocket 1, valve body 6, valve seat 3 are compressed.
As shown in Figure 1 to Figure 2, the inside of valve pocket 1 is provided with shoulder hole, facilitates the axially position during installation of valve seat 3；Shoulder hole
The second annular groove 18 is provided with ladder, the second sealing ring 11 is placed in the second annular groove 18, for valve pocket 1 and valve seat 3 it
Between sealing；Lateral open-type high-speed piezoelectric switch valve use inserting form, and the external diameter of valve pocket 1 uses up big and down small and carries cone angle
Interim form, convenient installation；The periphery of valve pocket 1 is provided with first annular groove 17, the 3rd annular groove 19, the 3rd annular groove
19 built with the first sealing ring 9, for the sealing between valve inlet 7 and valve outlet 12；First annular groove 17 is built with the 3rd
Sealing ring 13, for the sealing between valve outlet 12 and external environment；The shoulder hole bottom of valve pocket 1 is provided with dashpot 15, is used for
Reduce the hydraulic power that high-voltage oil liquid is sprayed at valve element 10, reduce the impact to the bottom of valve pocket 1 and noise；It is provided with valve outlet 12
Valve outlet collecting tank 14, for collecting the fluid of buffered groove 15；The upper surface of valve pocket 1 is provided with the first power supply string holes 16, conveniently will
The power line being connected with piezoelectric ceramics 5 is led to outside valve pocket.
As shown in Figures 2 to 4, the valve base center hole 21 of valve seat 3 exports survey and is provided with valve seat outlet liquid separation groove 20, for will be from
High-voltage oil liquid is sprayed at valve element 10 to spread out, and reduces the impact to valve pocket bottom；The end face of valve seat 3 is provided with second source string holes
22, it is convenient to lead to the power line being connected with piezoelectric ceramics 5 outside valve pocket.
As shown in Fig. 2 valve element 10 is placed in the lower section of valve base center hole 21, when switch valve works, by high-voltage oil liquid by valve element
10 hold up, and valve element 10 keeps linear contact lay with the lower end of valve base center hole 21, ensures its sealing state, when piezoelectric ceramics 5 is not operating,
Maintained switch valve is into closed mode.
As shown in Fig. 2, Fig. 5, Fig. 6 and Fig. 7, valve body 6 is installed in the shoulder hole of valve pocket 1, immediately below valve seat 3, valve body 6
It is internal to be axially provided with power-assisted steel-ball limiting groove 24, moved for limiting power-assisted steel ball 4 along the circumferencial direction of valve body 6；The inside footpath of valve body 6
Piezoelectric ceramics groove 26 is provided with upwards, piezoelectric ceramics 5 is placed in piezoelectric ceramics groove 26, and tangent with valve element 10, piezoelectric ceramics thrust
The centre of sphere of 35 application point face valve element 10, piezoelectric ceramics thrust moment 31 are much larger than high-voltage oil liquid resistance torque 32, play province
The effect of power；The inside of valve body 6 is provided with valve body first surface 23, and motion space is provided when being opened for valve element 10, and the inside of valve body 6 is provided with
The second curved surface of valve body 27, it is uniform along the surrounding of valve element 10 to be advantageous to pressure oil liquid, and is held up.
As shown in Fig. 2 drive mechanism of the piezoelectric ceramics 5 as switch valve, can pass through the width of control input voltage pulse
Degree or dutycycle, and then the aperture of valve element 10 is controlled, the flow by valve port is controlled, realizes the function of proportioning valve.
As shown in Figure 2 and Figure 7, power-assisted steel ball 4 is embedded in the gap between valve body 6 and power-assisted steel-ball limiting groove 24, helps
Power steel-ball limiting groove 24 limits power-assisted steel ball 4 and along the circumferential direction moved, because switch valve vertical direction is installed, power-assisted steel ball gravity
Component 34 when piezoelectric ceramics 5 acts as the component of valve element 10 is opened, the component torque 33 of power-assisted steel ball gravity is much larger than height
Liquid resistance torque 32 is pressed oil, contributes to valve element 10 to open.
As shown in Figures 2 to 5, the first power supply string holes 16 are provided with valve pocket 1, second source string holes is provided with the valve seat 3
22 and the valve body 6 on be provided with the 3rd power supply string holes 25, first power supply string holes 16, second source string holes 22, the 3rd power supply
String holes 25 is co-axially mounted, and power line 2 is connected with piezoelectric ceramics 5, and passes through the first power supply string holes 16, second source string holes 22,
Three power supply string holes 25 are connected with outside energy source.
As shown in Figure 2 and Figure 6, cover plate 8 is installed on the shoulder hole bottom of valve pocket 1, uses and is threadedly coupled between valve pocket 1, and
With sealant sealing, valve body 6, valve seat 3 are compressed；The bottom of cover central hole 29 is provided with cover plate entrance collecting tank 30, is advantageous to
Fluid access switch valve, the upper end of cover central hole 29 are provided with cover plate outlet liquid separation groove 28, are advantageous to pressure oil liquid being dispersed to
The surrounding of valve element 10.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：
The invention provides a kind of lateral open-type high-speed piezoelectric switch valve, using Piezoelectric Ceramic, to solve existing electromagnetism
Switch valve is using limited, the response frequency of electromagnet is not high enough, and noise is big in by environment such as electromagnetic interference, low temperature, vacuum etc.
Problem；Using lateral open-type, using lever principle, the opening force of valve element 10 is greatly reduced, to solve existing electromagnetic switch
The problem of valve opening force deficiency；Valve element 10 utilizes the curved surface and oil liquid pressure self-return of valve inner, no return spring, with solution
Certainly the problem of existing electromagnetic switch valve spring fatiguability failure.
1. using lateral open-type, using lever principle, the opening force of valve element is greatly reduced；
2. boosting mechanism reduce further valve element opening force；
3. without return spring, to solve the problems, such as that existing electromagnetic switch valve spring fatiguability fails；
4. weight lowers significantly, power density greatly improves；
5. using Piezoelectric Driving form, response speed greatly improves, and the influence of electromagnetic interference environment is avoided, using not by low
The limitation of the adverse circumstances such as temperature, vacuum；
7. Piezoelectric Ceramic noiseless is pollution-free, the operating mode harsh to environmental requirement such as suitable medical；
8. it is easy to process, cost is saved, it is easy to use.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, work, device, component and/or combinations thereof.
It should be noted that term " comprising " and " tool in the description and claims of this application and above-mentioned accompanying drawing
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing series of steps or unit
Process, method, system, product or equipment are not necessarily limited to those steps clearly listed or unit, but may include without clear
It is listing to Chu or for the intrinsic other steps of these processes, method, product or equipment or unit.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (9)
- A kind of 1. lateral open-type high-speed piezoelectric switch valve, it is characterised in that including：Valve pocket（1）, the valve pocket（1）Axial direction be provided with one end open shoulder hole, the bottom of the shoulder hole with it is described Valve pocket（1）Side on the valve outlet that opens up（12）It is connected；Valve seat（3）, valve body（6）And cover plate（8）, the cover plate（8）It is threadedly coupled with the openend of the shoulder hole and described in inciting somebody to action Valve body（6）With the valve seat（3）Sequentially closely it is fitted in the shoulder hole, the valve seat（3）One side fitting with the rank On the step surface in terraced hole, the valve body（6）Be internally provided with receiving valve element（10）Space and both ends open, the valve element （10）For circular steel ball, the valve seat（3）Axial centre be provided with valve base center hole（21）, the cover plate（8）Axial direction in The heart is provided with cover central hole（29）Form valve inlet（7）, the valve base center hole（21）With the cover central hole（29）'s Diameter is less than the valve element（10）Diameter, switch valve work when, the valve element（10）Held up by high-voltage oil liquid and withstand on the valve Seat centre bore（21）On；Piezoelectric ceramics（5）, the valve body（6）Inner radial horizontal direction offer piezoelectric ceramics groove（26）, the piezoelectricity pottery Porcelain（5）It is installed on the piezoelectric ceramics groove（26）Interior and one end and the piezoelectric ceramics groove（26）Bottom land apical grafting, with the valve Core（10）Peak at the valve base center hole（21）When upper, the piezoelectric ceramics（5）Stretching one end and the valve element（10）It is horizontal The middle part plane tangent in direction, power line（2）By through the valve pocket（1）, the valve seat（3）, the valve body（6） On deep hole and the piezoelectric ceramics（5）The close piezoelectric ceramics groove（26）One end connection of bottom land, the piezoelectric ceramics （5）Extended in the presence of driving voltage so as to promote the valve element（10）Rotated to side.
- 2. lateral open-type high-speed piezoelectric switch valve according to claim 1, it is characterised in that the valve pocket（1）It is internal Provided with power-assisted steel ball（4）, the power-assisted steel ball（4）The embedded valve body（6）Inner space and be installed on the piezoelectric ceramics （5）Side top.
- 3. lateral open-type high-speed piezoelectric switch valve according to claim 2, it is characterised in that the valve body（6）Shang pair Answer the power-assisted steel ball（4）It is provided with power-assisted steel-ball limiting groove（24）, the steel ball（4）It is installed on the power-assisted steel-ball limiting groove （24）It is interior, the power-assisted steel-ball limiting groove（24）Limit the power-assisted steel ball（4）Along the circumferential direction move.
- 4. lateral open-type high-speed piezoelectric switch valve according to claim 1, it is characterised in that the valve pocket（1）It is outer The both ends in week have first annular groove（17）With the 3rd annular groove（19）, the first annular groove（17）With it is described 3rd annular groove（19）It is respectively arranged at the valve outlet（12）Both sides, the first sealing ring（13）With the 3rd sealing ring（9） It is respectively arranged in the first annular groove（17）With the 3rd annular groove（19）In be used for realize that switch valve connects with outside Sealing when connecing；The direction valve seat of the shoulder hole（3）Side step surface on be provided with the second annular groove（18）, second Sealing ring（11）It is placed in the second annular groove（18）It is interior, for the valve pocket（1）With valve seat（3）Between sealing.
- 5. lateral open-type high-speed piezoelectric switch valve according to claim 4, it is characterised in that the lateral open-type is high Ram compression electric switch valve uses inserting form, the valve pocket（1）Be provided with the first annular groove（17）One end external diameter be more than Provided with the 3rd annular groove（19）One end, the valve pocket（1）Be provided with the first annular groove（17）One end end Portion is provided with cone angle transition.
- 6. lateral open-type high-speed piezoelectric switch valve according to claim 1, it is characterised in that the valve pocket（1）Rank Terraced hole is provided with the valve outlet（12）One end bottom be provided with dashpot（15）, for reducing from valve element（10）Place sprays high pressure The hydraulic power of fluid, reduce to the valve pocket（1）The impact of bottom and noise；The valve outlet（12）The close dashpot （15）One end be provided with valve outlet collecting tank（14）, for collecting buffered groove（15）The fluid of outflow.
- 7. lateral open-type high-speed piezoelectric switch valve according to claim 1, it is characterised in that the valve pocket（1）On open There are the first axial power supply string holes（16）, the valve seat（3）On be provided with axial second source string holes（22）, the valve body（6） On be provided with the 3rd axial power supply string holes（25）, the power line（2）Sequentially run through first power supply string holes（16）, described Two power supply string holes（22）With the 3rd power supply string holes（25）With the piezoelectric ceramics（5）Connection, the first power supply string holes（16）With Power line（2）Between gap sealant sealing.
- 8. lateral open-type high-speed piezoelectric switch valve according to claim 1, it is characterised in that the valve seat（3）Valve Seat centre bore（21）Outlet side is provided with valve seat outlet liquid separation groove（20）, be advantageous to pressure oil liquid being dispersed to surrounding, reduce to valve Set（1）The impact of bottom, the cover central hole（29）Arrival end is provided with cover plate entrance collecting tank（30）, be advantageous to fluid entrance Switch valve, the cover central hole（29）The port of export be provided with cover plate outlet liquid separation groove（28）, be advantageous to disperse pressure oil liquid To valve element（10）Surrounding.
- 9. lateral open-type high-speed piezoelectric switch valve according to claim 1, it is characterised in that the valve body（6）It is internal Close to the cover plate（8）One end be spherical valve body first surface（23）, it is the valve element（10）Offer action is empty during unlatching Between；The valve body（6）The internal close valve seat（3）One end and away from the piezoelectric ceramics（5）Side be provided with taper The curved surface of valve body second（27）, be advantageous to pressure oil liquid along the valve element（10）Surrounding is uniform and by the valve element（10）Hold up.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711088726.5A CN107882797B (en) | 2017-11-08 | 2017-11-08 | Lateral open-type high-speed piezoelectric switch valve |
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| CN201711088726.5A CN107882797B (en) | 2017-11-08 | 2017-11-08 | Lateral open-type high-speed piezoelectric switch valve |
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| CN107882797B CN107882797B (en) | 2019-08-06 |
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| CN107882797B (en) | 2019-08-06 |
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