CN107882797B - Lateral open-type high-speed piezoelectric switch valve - Google Patents
Lateral open-type high-speed piezoelectric switch valve Download PDFInfo
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- CN107882797B CN107882797B CN201711088726.5A CN201711088726A CN107882797B CN 107882797 B CN107882797 B CN 107882797B CN 201711088726 A CN201711088726 A CN 201711088726A CN 107882797 B CN107882797 B CN 107882797B
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- valve body
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- 239000000919 ceramic Substances 0.000 claims abstract description 58
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 238000000926 separation method Methods 0.000 claims description 8
- 239000000565 sealant Substances 0.000 claims description 4
- 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
- 238000005336 cracking Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 206010016256 fatigue Diseases 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect 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
- 238000005516 engineering process 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
- 239000000463 material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000002604 ultrasonography 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
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/004—Actuating devices; Operating means; Releasing devices actuated by piezoelectric means
Abstract
The present invention provides a kind of lateral open-type high-speed piezoelectric switch valves, including valve pocket, axial step hole open at one end is equipped in valve pocket, the side of the one end of stepped hole not being open is provided with valve outlet, valve seat is installed in stepped hole, valve body, which is installed in valve pocket, to be located at below valve seat, and using being threadedly coupled and sequentially compressing valve body, valve seat between cover board and valve pocket, spool is installed on the inside of valve body；Valve inner is radially provided with horizontal piezoelectric ceramics slot, and piezoelectric ceramics is placed in piezoelectric ceramics slot and the one end stretched out and spool are tangent；Power supply line is placed in the coaxial deep hole of valve pocket, valve seat and valve body and connect with piezoelectric ceramics.When without driving voltage, spool is pressed together on valve base center hole by high-voltage oil liquid, and valve is closed；When applying driving voltage, piezoelectric ceramics extends so that spool is rotated to side, and valve is opened.The present invention uses lateral open-type, and no return spring solves the problems, such as that electromagnetic switch valve response speed is slow, cracking pressure is big, return spring is vulnerable.
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 technique
High-speed switch valve be one kind for growing up the 1980s have small in size, control flexibly, structure it is simple, anti-
Pollution capacity is strong, high reliablity and price are cheap, the electrichydraulic control conversion element for the features such as working good with electronic circuit.As long as control
Pulse frequency or pulse width processed can continuously control flow.
In hydraulic control system, high-speed switch valve plays the role of very important, and performance directly influences entire system
The performance of system.Traditional generally existing precision of electromagnetism high-speed switch valve is low and the slow problem of response speed, the present invention use piezoelectricity
Material is as drive force source, to meet the requirement of high-precision hydraulic system
Ultrasound-driven, without electromagnetism winding and magnetic circuit, is converted compared with conventional motors drive without electromagnetic interaction
Energy, but the inverse piezoelectric effect of piezoelectric ceramics is utilized, with structure, simple, small-size light-weight, fast response time, noise are low, low
Fast big torque, control feature is good, positioning accuracy is high；Not by magnetic interference, move the advantages that accurate, in addition also have it is low temperature resistant,
Vacuum etc. adapts to the characteristics of space environment.
The present invention is plug-in, convenient for installation and maintenance；Valve is greatly reduced using lever principle using lateral open-type
The opening force of core；Spool utilizes the curved surface and oil liquid pressure self-return of valve inner, and it is easily tired to solve spring for no return spring
The problem of labor fails.
The positioning accuracy 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 be answered extensively in some precision instruments, Medical Devices and semiconductor processing technology
With.
Due to strong, fast response time, the spies such as reliability height with lateral open-type high-speed piezoelectric switch valve anti-pollution ability
Property, it is the pass in the hydraulic systems in fields such as space flight and aviation dynamical system, space station, ability converting apparatus, underwater work system
Key member will be widely applied in the above all kinds of hydraulic systems.
Summary of the invention
It is existing to solve using Piezoelectric Ceramic the present invention provides a kind of lateral open-type high-speed piezoelectric switch valve
Electromagnetic switch valve is using being limited in by environment such as electromagnetic interference, low temperature, vacuum, and the response frequency of electromagnet is not high enough, noise
The problems such as big；The opening force of spool is greatly reduced using lever principle using lateral open-type, is opened with solving existing electromagnetism
Close the problem of valve opening force deficiency；Spool utilizes the curved surface and oil liquid pressure self-return of valve inner, no return spring, with solution
The problem of certainly existing electromagnetic switch valve spring fatiguability fails.
To achieve the goals above, the present invention provides a kind of lateral open-type high-speed piezoelectric switch valves, including valve pocket, valve
Seat, valve body cover board and piezoelectric ceramics, the axial direction of valve pocket are equipped with stepped hole open at one end, the bottom of stepped hole and valve pocket
The valve outlet opened up on side is connected；Cover board is threadedly coupled with the open end of stepped hole and sequentially closely presses valve body and valve seat
In stepped hole, on the step surface of stepped hole, valve body is internally provided with the space for accommodating spool for the one side fitting of valve seat
And both ends open, spool are round steel ball, the axial centre of valve seat is provided with valve base center hole, and the axial centre of cover board 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 spool, and switch valve is not operating
When, spool is withstood on valve base center hole by high-voltage oil liquid picking-up；The inner radial horizontal direction of valve body offers piezoelectric ceramics slot,
Piezoelectric ceramics is installed in piezoelectric ceramics slot and the slot bottom apical grafting of one end and piezoelectric ceramics slot, spool peak on valve base center hole
When, the intermediate position plane tangent of stretching one end and spool horizontal direction of piezoelectric ceramics, power supply line is by through valve pocket, valve
One end of the close piezoelectric ceramics slot slot bottom of seat, the deep hole on valve body and piezoelectric ceramics connects, and piezoelectric ceramics is in driving voltage
The lower elongation of effect is to push spool to rotate to side.
Further, power-assisted steel ball is equipped 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 slot, and the side of valve body is equipped with power-assisted
In steel-ball limiting slot, power-assisted steel-ball limiting slot limitation power-assisted steel ball is along the circumferential direction moved.
Further, the both ends of the periphery of valve pocket have first annular groove and third annular groove, first annular
Groove and third annular groove are respectively arranged at the two sides of valve outlet, and the first sealing ring and third sealing ring are respectively arranged in first
Sealing when in annular groove and third annular groove for realizing switch valve and external connection；One towards valve seat of stepped hole
Second annular groove is provided on side stage terrace, the second sealing ring is placed in 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 equipped with first annular groove
One end outer diameter be greater than one end equipped with third annular groove, one end end equipped with first annular groove of valve pocket is equipped with cone angle
Transition.
Further, one end bottom equipped with valve outlet of the stepped hole of valve pocket is equipped with dashpot, for reducing from spool
Place sprays the hydraulic power of high-voltage oil liquid, reduces the impact to valve pocket bottom and noise；It opens one end of the close dashpot of valve outlet
There is valve outlet collecting tank, for collecting the oil liquid flowed out through dashpot.
Further, it is provided with the first axial power supply string holes on valve pocket, axial second source string holes, valve are provided on valve seat
Axial third power supply string holes are provided on body, power supply line sequentially runs through the first power supply string holes, second source string holes and third power supply
String holes is connect with piezoelectric ceramics, and gap is sealed with sealant between the first power supply string holes and power supply line.
Further, the valve base center hole outlet side of valve seat is provided with valve seat outlet liquid separation slot, and cover central hole arrival end is opened
There is cover board entrance collecting tank, be conducive to oil liquid access switch valve, the outlet end of cover central hole is provided with cover board outlet liquid separation slot, has
Conducive to the surrounding that pressure oil liquid is dispersed to spool.
Further, valve inner is spherical valve body first surface close to one end of cover board, to provide when spool unlatching
Motion space；The one end of valve inner close to valve seat and the side far from piezoelectric ceramics are equipped with the second curved surface of valve body of taper, have
It is evenly distributed with conducive to pressure oil liquid along spool surrounding and holds up spool.
It applies the technical scheme of the present invention, high-voltage oil liquid enters from valve inlet, and steel ball spool is pushed to withstand valve seat center
Hole, so that just forming sealing between spool and valve base center hole, oil liquid cannot continue flow forward, and switch valve, which is in, closes shape
State；When valve being needed to open, lead to high frequency voltage to piezoelectric ceramics, axial elongation can occur for piezoelectric ceramics, push spool around with valve seat
The fulcrum rotation of centre bore contact, the gravity of power-assisted steel ball plays the role of power-assisted, in this way in piezoelectric ceramics and power-assisted steel ball
Collective effect under so that spool is rotated to side, high-voltage oil liquid flows to valve outlet by valve base center hole；When power-off, piezoelectricity
Ceramic shrinkage, high-voltage oil liquid push spool to valve base center hole center movement, valve base center hole entrance are blocked, so that switch valve
It is in an off state.Compared with prior art, the beneficial effects of the invention are as follows Piezoelectric Ceramic is used, existing electromagnetism is solved
For switch valve using limited problem in by environment such as electromagnetic interference, low temperature, vacuum, Piezoelectric Ceramic response frequency is high, makes an uproar
Sound is small；The opening force of spool is greatly reduced using lever principle using lateral open-type, solves existing electromagnetic switch valve
Open hypodynamic problem；Spool utilizes the curved surface and oil liquid pressure self-return of valve inner, and no return spring is existing to solve
There is the problem of electromagnetic switch valve spring fatiguability failure.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.
In the accompanying drawings:
Fig. 1 shows the overall structure diagram of lateral open-type high-speed piezoelectric switch valve of the invention；
Fig. 2 shows the sectional front views in Fig. 1；
Fig. 3 shows the sectional view of the valve pocket in Fig. 2；
Fig. 4 shows the sectional view of the valve seat in Fig. 2；
Fig. 5 shows the sectional view of the valve body in Fig. 2；
Fig. 6 shows the sectional view of the cover board in Fig. 2；
Fig. 7 shows the force structure schematic diagram of the spool in Fig. 2；
Wherein, the above drawings include the following reference numerals:
1, valve pocket；2, power supply line；3, valve seat；4, power-assisted steel ball；5, piezoelectric ceramics；6, valve body；7, valve inlet；8, cover board；
9, third sealing ring；10, spool；11, the second sealing ring；12, valve outlet；13, the first sealing ring；14, valve outlet collecting tank；
15, dashpot；16, the first power supply string holes；17, first annular groove；18, second annular groove；19, third annular groove；20,
Valve seat exports liquid separation slot；21, valve base center hole；22, second source string holes；23, valve body first surface；24, power-assisted steel-ball limiting
Slot；25, third power supply string holes；26, piezoelectric ceramics slot；27, the second curved surface of valve body；28, cover board exports liquid separation slot；29, in cover board
Heart hole；30, cover board entrance collecting tank；31, piezoelectric ceramics thrust moment；32, high-voltage oil liquid resistance torque；33, power-assisted steel ball weight
The component torque of power；34, the component of power-assisted steel ball gravity；35, piezoelectric ceramics thrust.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has 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 present invention provides a kind of lateral open-type high-speed piezoelectric switch valve
Electromagnetic switch valve is using being limited in by environment such as electromagnetic interference, low temperature, vacuum, and the response frequency of electromagnet is not high enough, noise
The problems such as big；The opening force of spool is greatly reduced using lever principle using lateral open-type, is opened with solving existing electromagnetism
Close the problem of valve opening force deficiency；Spool utilizes the curved surface and oil liquid pressure self-return of valve inner, no return spring, with solution
The problem of certainly existing electromagnetic switch valve spring fatiguability fails.
As shown in Figures 1 to 6, stepped hole and first annular groove 17, second annular groove 18, the are equipped with inside valve pocket 1
Three annular grooves 19 are respectively provided with the first sealing ring 13, the second sealing ring 11, third sealing ring 9 in groove, and are provided with valve outlet
12, dashpot 15, the first power supply string holes 16；Valve seat 3 is installed, spool 10 is placed under valve base center hole 21 in 1 stepped hole of valve pocket
Side, valve body 6, which is installed in valve pocket 1, to be located at below valve seat 3, when switch valve works, is held up spool 10 by high-voltage oil liquid, and keep
Valve base center hole 21 is at closed state；Valve body 6 is installed in 1 stepped hole of valve pocket, is located at immediately below valve seat 3, and 6 inside of valve body is axial
It is provided with power-assisted steel-ball limiting slot 24, is radially provided with piezoelectric ceramics slot 26, piezoelectric ceramics 5 is placed in piezoelectric ceramics slot 26, and with
Spool 10 is tangent；Power-assisted steel ball 4 is embedded in the gap between valve body 6 and power-assisted steel-ball limiting slot 24；Power-assisted steel-ball limiting slot
24 limitation power-assisted steel balls 4 along the circumferential direction move；Coaxial first power supply string holes 16, second are provided on valve pocket 1, valve seat 3 and valve body 6
Power supply string holes 22 and third power supply string holes 25, power supply line 2 sequentially pass through the first power supply string holes 16, second source string holes 22 and third
Power supply string holes 25, and connect with piezoelectric ceramics 5, the gap between the first power supply string holes 16 and power supply line 2 is sealed with sealant；Lid
Plate 8 is installed on 1 bottom of valve pocket, 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, stepped hole is equipped with inside valve pocket 1, axially position when valve seat 3 being facilitated to install；Stepped hole
Second annular groove 18 is provided at ladder, the second sealing ring 11 is placed in second annular groove 18, for valve pocket 1 and valve seat 3 it
Between sealing；Lateral open-type high-speed piezoelectric switch valve uses inserting form, and 1 outer diameter of valve pocket uses up big and down small and has cone angle
Interim form facilitates installation；1 periphery of valve pocket is provided with first annular groove 17, third annular groove 19, third annular groove
19 are provided with the first sealing ring 9, for the sealing between valve inlet 7 and valve outlet 12；First annular groove 17 is provided with third
Sealing ring 13, for the sealing between valve outlet 12 and external environment；The stepped hole bottom of valve pocket 1 is equipped with dashpot 15, is used for
Reduce the hydraulic power for spraying high-voltage oil liquid from spool 10, reduces the impact to 1 bottom of valve pocket and noise；It is provided at valve outlet 12
Valve outlet collecting tank 14, for collecting the oil liquid through dashpot 15；1 upper surface of valve pocket is provided with the first power supply string holes 16, facilitate by
The power supply line connecting with piezoelectric ceramics 5 is led to outside valve pocket.
As shown in Figures 2 to 4, the outlet of valve base center hole 21 of valve seat 3, which is surveyed, is provided with valve seat outlet liquid separation slot 20, for will be from
High-voltage oil liquid is sprayed at spool 10 to spread out, and reduces the impact to valve pocket bottom；3 end face of valve seat is provided with second source string holes
22, facilitate and leads to the power supply line connecting with piezoelectric ceramics 5 outside valve pocket.
As shown in Fig. 2, spool 10 is placed in the lower section of valve base center hole 21, when switch valve works, by high-voltage oil liquid by spool
10 hold up, and spool 10 keeps line to contact with 21 lower end of valve base center hole, guarantee its sealing state, when piezoelectric ceramics 5 is not operating,
Keep switch valve at closed state.
As shown in Fig. 2, Fig. 5, Fig. 6 and Fig. 7, valve body 6 is installed in 1 stepped hole of valve pocket, is located at immediately below valve seat 3, valve body 6
It is internal to be axially provided with power-assisted steel-ball limiting slot 24, it is moved for limiting power-assisted steel ball 4 along 6 circumferencial direction of valve body；6 inside diameter of valve body
It is provided with piezoelectric ceramics slot 26 upwards, piezoelectric ceramics 5 is placed in piezoelectric ceramics slot 26, and tangent with spool 10, piezoelectric ceramics thrust
The centre of sphere of 35 position face spool 10, piezoelectric ceramics thrust moment 31 are much larger than high-voltage oil liquid resistance torque 32, play province
The effect of power；It is equipped with valve body first surface 23 inside valve body 6, to provide motion space when the unlatching of spool 10, is equipped with inside valve body 6
It is uniformly distributed along 10 surrounding of spool to be conducive to pressure oil liquid, and is held up for the second curved surface of valve body 27.
As shown in Fig. 2, driving mechanism of the piezoelectric ceramics 5 as switch valve, can pass through the width of control input voltage pulse
Degree or duty ratio, and then the aperture of control valve core 10, control realize the function of proportioning valve by the flow of valve port.
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 slot 24, helps
Power steel-ball limiting slot 24 limits power-assisted steel ball 4 and along the circumferential direction moves, since switch valve vertical direction is installed, power-assisted steel ball gravity
Component 34 when piezoelectric ceramics 5 is acted as 10 component of spool is opened, the component torque 33 of power-assisted steel ball gravity is much larger than height
Pressure oil liquid resistance torque 32 facilitates the unlatching of spool 10.
As shown in Figures 2 to 5, it is provided with the first power supply string holes 16 on valve pocket 1, is provided with second source string holes on the valve seat 3
22 and the valve body 6 on be provided with third power supply string holes 25, first power supply string holes 16, second source string holes 22, third power supply
String holes 25 is co-axially mounted, and power supply line 2 is connect with piezoelectric ceramics 5, and passes through the first power supply string holes 16, second source string holes 22, the
Three power supply string holes 25 are connect with outside energy source.
As shown in Figure 2 and Figure 6, cover board 8 is installed on 1 stepped hole bottom of valve pocket, uses and is threadedly coupled between valve pocket 1, and
It is sealed with sealant, valve body 6, valve seat 3 is compressed；29 lower end of cover central hole is provided with cover board entrance collecting tank 30, is conducive to
Oil liquid access switch valve, 29 upper end of cover central hole are provided with cover board outlet liquid separation slot 28, are conducive to for pressure oil liquid being dispersed to
The surrounding of spool 10.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
It is existing to solve using Piezoelectric Ceramic the present invention provides a kind of lateral open-type high-speed piezoelectric switch valve
Electromagnetic switch valve is using being limited in by environment such as electromagnetic interference, low temperature, vacuum, and the response frequency of electromagnet is not high enough, noise
The problems such as big；The opening force of spool 10 is greatly reduced using lever principle using lateral open-type, to solve existing electromagnetism
Switch the insufficient problem of valve opening force；Curved surface and oil liquid pressure self-return of the spool 10 using valve inner, no return spring,
To solve the problems, such as existing electromagnetic switch valve spring fatiguability failure.
1. greatly reducing the opening force of spool using lever principle using lateral open-type；
2. boosting mechanism further reduced spool opening force；
3. without return spring, to solve the problems, such as existing electromagnetic switch valve spring fatiguability failure；
4. weight lowers significantly, power density is greatly improved；
5. using Piezoelectric Driving form, response speed is greatly improved, and the influence of electromagnetic interference environment is avoided, using not
It is limited by adverse circumstances such as low temperature, vacuum；
7. Piezoelectric Ceramic noiseless is pollution-free, the operating condition to environmental requirement harshness 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 specific 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 singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, work, device, component and/or their combination.
It should be noted that term " includes " and " tool in the description and claims of this application and above-mentioned attached drawing
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing a series of steps or units
Process, method, system, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include without clear
Other step or units listing to Chu or intrinsic for these process, methods, product or equipment.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of lateral open-type high-speed piezoelectric switch valve characterized by comprising
Valve pocket (1), the axial direction of the valve pocket (1) are equipped with stepped hole open at one end, the bottom of the stepped hole with it is described
The valve outlet (12) opened up on the side of valve pocket (1) is connected；
Valve seat (3), valve body (6) and cover board (8), the cover board (8) are threadedly coupled with the open end of the stepped hole and will be described
Valve body (6) and the valve seat (3) are sequentially closely fitted in the stepped hole, and the valve seat (3) fits in the rank on one side
On the step surface in terraced hole, the valve body (6) is internally provided with the space for accommodating spool (10) and both ends open, the spool
It (10) is round steel ball, the axial centre of the valve seat (3) is provided with valve base center hole (21), in the axial direction of the cover board (8)
The heart is provided with cover central hole (29) and forms valve inlet (7), the valve base center hole (21) and the cover central hole (29)
Diameter is less than the diameter of the spool (10), and when switch valve works, the spool (10) withstands on the valve by high-voltage oil liquid picking-up
On seat centre bore (21)；
The inner radial horizontal direction of piezoelectric ceramics (5), the valve body (6) offers piezoelectric ceramics slot (26), the piezoelectricity pottery
Porcelain (5) is installed in the piezoelectric ceramics slot (26) and the slot bottom apical grafting of one end and the piezoelectric ceramics slot (26), with the valve
When core (10) is peaked on the valve base center hole (21), stretching one end and the spool (10) of the piezoelectric ceramics (5) are horizontal
The intermediate position plane tangent in direction, power supply line (2) is by through the valve pocket (1), the valve seat (3), the valve body (6)
On one end close to piezoelectric ceramics slot (26) slot bottom of deep hole and the piezoelectric ceramics (5) connect, the piezoelectric ceramics
(5) it extends that the spool (10) is pushed to rotate to side under the action of driving voltage.
2. lateral open-type high-speed piezoelectric switch valve according to claim 1, which is characterized in that the valve pocket (1) is internal
Equipped with power-assisted steel ball (4), the power-assisted steel ball (4) is embedded in the inner space of the valve body (6) and is installed on the piezoelectric ceramics
(5) top of side.
3. lateral open-type high-speed piezoelectric switch valve according to claim 2, which is characterized in that the valve body (6) on pair
The power-assisted steel ball (4) is answered to be provided with power-assisted steel-ball limiting slot (24), the steel ball (4) is installed on the power-assisted steel-ball limiting slot
(24) in, the power-assisted steel-ball limiting slot (24) limits the power-assisted steel ball (4) and along the circumferential direction moves.
4. lateral open-type high-speed piezoelectric switch valve according to claim 1, which is characterized in that outside the valve pocket (1)
The both ends in week have a first annular groove (17) and third annular groove (19), the first annular groove (17) and described
Third annular groove (19) is respectively arranged at the two sides of the valve outlet (12), the first sealing ring (13) and third sealing ring (9)
It is respectively arranged in the first annular groove (17) and the third annular groove (19) and connects for realizing switch valve and outside
Sealing when connecing；It is provided with second annular groove (18) on the side step surface towards the valve seat (3) of the stepped hole, second
Sealing ring (11) is placed in second annular groove (18), for the sealing between the valve pocket (1) and valve seat (3).
5. lateral open-type high-speed piezoelectric switch valve according to claim 4, which is characterized in that the lateral open-type is high
Ram compression electric switch valve uses inserting form, and one end outer diameter equipped with the first annular groove (17) of the valve pocket (1) is greater than
One end equipped with the third annular groove (19), one end end equipped with the first annular groove (17) of the valve pocket (1)
Portion is equipped with cone angle transition.
6. lateral open-type high-speed piezoelectric switch valve according to claim 1, which is characterized in that the rank of the valve pocket (1)
One end bottom equipped with the valve outlet (12) in terraced hole is equipped with dashpot (15), and high pressure is sprayed at spool (10) for reducing
The hydraulic power of oil liquid reduces the impact to the valve pocket (1) bottom and noise；The close dashpot of the valve outlet (12)
(15) one end is provided with valve outlet collecting tank (14), for collecting the oil liquid flowed out through dashpot (15).
7. lateral open-type high-speed piezoelectric switch valve according to claim 1, which is characterized in that opened on the valve pocket (1)
There are axial the first power supply string holes (16), axial second source string holes (22), the valve body (6) are provided on the valve seat (3)
On be provided with axial third power supply string holes (25), the power supply line (2) is sequentially through first power supply string holes (16), described the
Two power supply string holes (22) and the third power supply string holes (25) are connect with the piezoelectric ceramics (5), the first power supply string holes (16) with
Gap is sealed with sealant between power supply line (2).
8. lateral open-type high-speed piezoelectric switch valve according to claim 1, which is characterized in that the valve of the valve seat (3)
Seat centre bore (21) outlet side is provided with valve seat outlet liquid separation slot (20), is conducive to for pressure oil liquid to be dispersed to surrounding, reduces to valve
The impact of (1) bottom is covered, cover central hole (29) arrival end is provided with cover board entrance collecting tank (30), is conducive to oil liquid entrance
Switch valve, the outlet end of the cover central hole (29) are provided with cover board outlet liquid separation slot (28), are conducive to disperse pressure oil liquid
To the surrounding of spool (10).
9. lateral open-type high-speed piezoelectric switch valve according to claim 1, which is characterized in that the valve body (6) is internal
One end close to the cover board (8) is spherical valve body first surface (23), empty to provide movement when the spool (10) unlatching
Between；Valve body (6) inside is close to the one end of the valve seat (3) and the side of separate piezoelectric ceramics (5) is equipped with taper
The second curved surface of valve body (27) is conducive to pressure oil liquid and is evenly distributed with along the spool (10) surrounding and holds up the spool (10).
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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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711088726.5A CN107882797B (en) | 2017-11-08 | 2017-11-08 | Lateral open-type high-speed piezoelectric switch valve |
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| Publication Number | Publication Date |
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| CN107882797A CN107882797A (en) | 2018-04-06 |
| CN107882797B true CN107882797B (en) | 2019-08-06 |
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| CN201711088726.5A Active CN107882797B (en) | 2017-11-08 | 2017-11-08 | Lateral open-type high-speed piezoelectric switch valve |
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| CN206496071U (en) * | 2017-02-23 | 2017-09-15 | 浙江师范大学 | A kind of magnetorheological pilot-operated overflow valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100419279C (en) * | 2007-03-22 | 2008-09-17 | 浙江大学 | Piezoelectric crystal digital valve |
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|---|---|---|---|---|
| CN2658493Y (en) * | 2003-11-17 | 2004-11-24 | 石延平 | Electrohydaulic high-speed open-close valve |
| CN101328913A (en) * | 2007-06-21 | 2008-12-24 | 北京航空航天大学 | Novel intelligent piezoelectric type high speed switch valve |
| CN201322067Y (en) * | 2008-08-08 | 2009-10-07 | 宁波市鄞州通力液压电器厂 | High-speed switch valve |
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| Publication number | Publication date |
|---|---|
| CN107882797A (en) | 2018-04-06 |
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