CN205678150U - A kind of high-precision flow valve - Google Patents
A kind of high-precision flow valve Download PDFInfo
- Publication number
- CN205678150U CN205678150U CN201620629293.4U CN201620629293U CN205678150U CN 205678150 U CN205678150 U CN 205678150U CN 201620629293 U CN201620629293 U CN 201620629293U CN 205678150 U CN205678150 U CN 205678150U
- Authority
- CN
- China
- Prior art keywords
- spool
- valve
- restriction
- flow
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Flow Control (AREA)
Abstract
The utility model discloses a kind of high-precision flow valve, including valve body and core assembly, valve body is provided with entrance and exit, core assembly includes the first spool, second spool and the 3rd spool, it is provided with preloading spring between first spool upper end and valve interior wall, it is provided with piezoelectric ceramics part between 3rd spool lower end and valve interior wall, valve inner is provided with high pressure chest, restriction and low pressure chamber, it is provided with a metal rubber piece in outlet, exit is additionally provided with pressure sensor and flow sensor, pressure sensor and flow sensor electrically connect with a control driver respectively, control driver electrically connects with piezoelectric ceramics part.The utility model combines the accurate displacement of piezoelectric ceramics part, can complete the trace regulation control of flow valve, and exit is provided with metal rubber piece can eliminate ripple, has the features such as reasonable in design, trace regulation and control are accurate, flow-control is stable.
Description
Technical field
The utility model relates to flow valve equipment technical field, particularly to a kind of high-precision flow valve.
Background technology
Flow valve is applicable to carry out in the liquid system of flow-control, and flow valve has multiple knot because of the difference using
Structure and design.Particularly in precision control flow valve, with fluid control technology, precision optical machinery and control technology, become more meticulous
Work technology, gene and the development of biotechnology etc., need to realize the accurate control to various composition micrometeors, thus promote
Researchs to microfluidic control technology for the people.But flow valve now exists, and high-accuracy controlling extent is poor, flow adjusts
The defect that stability is not high and precision control is poor.
Utility model content
The purpose of this utility model is to solve above-mentioned deficiency, provides a kind of high-precision flow valve, has reasonable in design, micro-
The features such as amount regulation and control are accurate, flow-control is stable.
The utility model is solved the technical problem that to realize by the following technical solutions:
A kind of high-precision flow valve, including valve body and the core assembly being positioned at described valve inner, described valve body is provided with
Entrance and exit, described core assembly includes the first spool, the second spool and the 3rd spool, described first spool upper end with described
Being provided with preloading spring between valve interior wall, described first spool lower end is that screw threads for fastening is connected with described second spool upper end, institute
Stating the second spool upper end and being provided with a cone joint stream interface, described second spool lower end and described 3rd spool upper end are mutually in pre-close-fitting
Closing, being provided with piezoelectric ceramics part between described 3rd spool lower end and described valve interior wall, described valve inner is provided with high pressure chest, joint
Head piece and low pressure chamber, described cone joint stream interface is positioned at described high pressure chest and described restriction junction, is provided with one in described outlet
Metal rubber piece, described exit is additionally provided with pressure sensor and flow sensor, described pressure sensor and flow sensor
Being positioned at outside described metal rubber piece, described pressure sensor and flow sensor electrically connect with a control driver respectively, institute
State control driver to electrically connect with described piezoelectric ceramics part.
Described entrance is through with described high pressure chest to be connected.
Described outlet is through with described low pressure chamber to be connected.
Described restriction is positioned between described high pressure chest and low pressure chamber, described restriction respectively with described high pressure chest and low pressure
Chamber is mutually communicated.
Described cone joint stream interface mid diameter size is identical with described restriction internal diameter size.
The utility model compared with prior art has following outstanding advantages and effect: the utility model combines piezoelectric ceramics
The accurate displacement of part, can complete the trace regulation control of flow valve, and exit is provided with metal rubber piece can eliminate ripple, knot
Resultant pressure sensor and flow sensor divide electrically connect with control driver and can complete automatically to adapt to regulation, raising rate of discharge
Stability, have the regulation and control of reasonable in design, trace accurately, the feature such as flow-control is stable.
Feature of the present utility model see graphic and preferable embodiment below the detailed description of this case and obtains clear
Ground understands.
Brief description
Fig. 1 is the overall structure schematic diagram of the utility model embodiment；
Fig. 2 is partial enlargement structural representation at A in Fig. 1；
Fig. 3 is the overall control structure schematic diagram of the utility model embodiment.
Detailed description of the invention
In order to make the utility model realize technological means, creation characteristic, reach purpose and be easy to understand with effect, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
As shown in Figure 1 to Figure 3, a kind of high-precision flow valve that the utility model provides, including valve body 1 be positioned at valve body 1
Internal core assembly 2, valve body 1 is provided with entrance 11 and outlet 14, and core assembly 2 includes the first spool the 21st, the second spool 22
It with the 3rd spool 23, between the first spool 21 upper end and valve body 1 inwall, is provided with preloading spring 3, the first spool 21 lower end and second
Spool 22 upper end is that screw threads for fastening connects, and the second spool 22 upper end is provided with a cone joint stream interface 221, the second spool 22 lower end and the
Three spool 23 upper ends, mutually in pre-tight fit, are provided with piezoelectric ceramics part 7, valve body 1 between the 3rd spool 23 lower end and valve body 1 inwall
Inside is provided with high pressure chest the 12nd, restriction 13 and low pressure chamber 15, and restriction 13 is positioned between high pressure chest 12 and low pressure chamber 15, restriction
13 are mutually communicated with high pressure chest 12 and low pressure chamber 15 respectively, and entrance 11 is through with high pressure chest 12 to be connected, outlet 14 and low pressure chamber 15
Through connection, cone joint stream interface 221 is positioned at high pressure chest 12 and restriction 13 junction, cone joint stream interface 221 mid diameter size
Identical with restriction 13 internal diameter size, it is provided with a metal rubber piece 6 in outlet 14, export and at 14, be additionally provided with pressure sensor 4 He
Flow sensor 5, pressure sensor 4 and flow sensor 5 are positioned at outside metal rubber piece 6, pressure sensor 4 and flow sensing
Device 5 electrically connects 8 with a control driver respectively, and control driver 8 electrically connects with piezoelectric ceramics part 7.
Operation principle of the present utility model is: entrance 11 enters for fluid, and first control driver 8 gives piezoelectric ceramics part
7 applying driving voltages, piezoelectric ceramics part 7 is due to inverse piezoelectric effect, and thrust output while output microdisplacement, so that the 3rd
Spool 23 moves up, and because of in pre-tight fit between the 3rd spool 23 and the second spool 22, thus drives the second spool 22 upwards
Motion so that cone joint stream interface 221 upwards moves, cone joint stream interface 221 centre home position be in high pressure chest 12 with
Restriction 13 junction, because change in displacement is upwards moved, so that restriction 13 completes through with high pressure chest 12, thus completes stream
Body through, fluid is entered in low pressure chamber 15 by restriction 13, thus flow to export at 14, and metal rubber piece 6 is elastic many
Porous materials, has corrosion-resistant, filtration, noise reduction, vibration damping and the characteristic, pressure sensor 4 and the flow sensor 5 that eliminate fluid ripple
Completing to export the monitoring of 14 fluids, and feeding back to monitoring information transmission in control driver 8, control driver 8 is according to feedback
Information completes corresponding compensation adjustment, thus completes delicate flow regulation and control.
The utility model combines the accurate displacement of piezoelectric ceramics part 7, can complete the trace regulation control of flow valve, outlet
It is provided with metal rubber piece 6 at 14 and can eliminate ripple, electric with control driver 8 in conjunction with pressure sensor 4 and flow sensor 5 points
Connection can complete automatically to adapt to regulation, improves the stability of outlet 14 flows, have reasonable in design, trace regulation and control accurately, stream
The features such as amount control is stable.
As known by the technical knowledge, the utility model can be by the reality of other essence without departing from its spirit or essential feature
The scheme of executing realizes.Therefore, embodiment disclosed above, for each side, is all merely illustrative, and is not only
's.All changes in the range of the utility model or in the range of being equal to the utility model are all by the utility model bag
Contain.
Claims (5)
1. a high-precision flow valve, including valve body and be positioned at the core assembly of described valve inner, described valve body be provided with into
Mouth and outlet, it is characterised in that: described core assembly includes the first spool, the second spool and the 3rd spool, described first spool
Being provided with preloading spring between upper end and described valve interior wall, described first spool lower end is that screw thread is tight with described second spool upper end
Being solidly connected, described second spool upper end is provided with a cone joint stream interface, described second spool lower end and described 3rd spool upper end phase
Mutually in pre-tight fit, being provided with piezoelectric ceramics part between described 3rd spool lower end and described valve interior wall, described valve inner sets
Having high pressure chest, restriction and low pressure chamber, described cone joint stream interface is positioned at described high pressure chest and described restriction junction, described go out
Being provided with a metal rubber piece in Kou, described exit is additionally provided with pressure sensor and flow sensor, described pressure sensor and
Flow sensor is positioned at outside described metal rubber piece, and described pressure sensor and flow sensor control driver with one respectively
Electrical connection, described control driver electrically connects with described piezoelectric ceramics part.
2. a kind of high-precision flow valve according to claim 1, it is characterised in that: described entrance is through with described high pressure chest
Connect.
3. a kind of high-precision flow valve according to claim 1, it is characterised in that: described outlet is through with described low pressure chamber
Connect.
4. a kind of high-precision flow valve according to claim 1, it is characterised in that: described restriction is positioned at described high pressure chest
With between low pressure chamber, described restriction is mutually communicated with described high pressure chest and low pressure chamber respectively.
5. a kind of high-precision flow valve according to claim 1, it is characterised in that: described cone joint stream interface mid diameter chi
Very little and described restriction internal diameter size is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620629293.4U CN205678150U (en) | 2016-06-16 | 2016-06-16 | A kind of high-precision flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620629293.4U CN205678150U (en) | 2016-06-16 | 2016-06-16 | A kind of high-precision flow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205678150U true CN205678150U (en) | 2016-11-09 |
Family
ID=57428914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620629293.4U Expired - Fee Related CN205678150U (en) | 2016-06-16 | 2016-06-16 | A kind of high-precision flow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205678150U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504201A (en) * | 2017-10-09 | 2017-12-22 | 中国矿业大学 | A kind of dual spring high accuracy hysteresis type pressure-control valve |
| CN111350875A (en) * | 2020-03-19 | 2020-06-30 | 大连理工大学 | Micro-flow proportional control valve |
| CN113738881A (en) * | 2021-08-04 | 2021-12-03 | 北京控制工程研究所 | Multi-sensor fused piezoelectric cold air variable thrust closed-loop regulation and control device |
| CN116620568A (en) * | 2023-05-29 | 2023-08-22 | 中国科学院微小卫星创新研究院 | Micro satellite device and thruster thereof |
-
2016
- 2016-06-16 CN CN201620629293.4U patent/CN205678150U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504201A (en) * | 2017-10-09 | 2017-12-22 | 中国矿业大学 | A kind of dual spring high accuracy hysteresis type pressure-control valve |
| CN111350875A (en) * | 2020-03-19 | 2020-06-30 | 大连理工大学 | Micro-flow proportional control valve |
| CN113738881A (en) * | 2021-08-04 | 2021-12-03 | 北京控制工程研究所 | Multi-sensor fused piezoelectric cold air variable thrust closed-loop regulation and control device |
| CN113738881B (en) * | 2021-08-04 | 2023-06-30 | 北京控制工程研究所 | Multi-sensor fused piezoelectric cold air variable thrust closed-loop regulation and control device |
| CN116620568A (en) * | 2023-05-29 | 2023-08-22 | 中国科学院微小卫星创新研究院 | Micro satellite device and thruster thereof |
| CN116620568B (en) * | 2023-05-29 | 2024-05-31 | 中国科学院微小卫星创新研究院 | Micro satellite device and thruster thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205678150U (en) | A kind of high-precision flow valve | |
| CN104696706B (en) | The microfluid stream quantity regulating device driven based on air pressure | |
| CN109630491B (en) | Electric control compensation two-way proportional flow valve | |
| CN103967733B (en) | A kind of delicate metering ceramic plunger topping-up pump | |
| CN201621122U (en) | Hydraulic full-bridge spiral pilot servo valve driven by rotating voice coil motor | |
| CN102878139B (en) | Piezoelectric-liquid-actuated elastic-membrane-position electric feedback two-stage servo valve and control method thereof | |
| CN104791102B (en) | Integrated fuel metering valve | |
| CN204267258U (en) | A kind of piezoelectric pump overvoltage protective device based on magnetic rheology effect | |
| CN204082741U (en) | A kind of have relative displacement self-sensing diverter valve based on magnetic rheology effect | |
| CN205370927U (en) | Controllable formula multicavity of flow has valve piezoelectric membrane micropump | |
| CN105605032A (en) | Dynamic loading device for dynamic pressure feedback test of servo valve | |
| CN105890971A (en) | Rock fracture seepage continuous servo liquid feeding device | |
| CN103671321A (en) | Hydraulic control valve | |
| CN206958021U (en) | A kind of Precise Oil Cylinder | |
| CN203560195U (en) | Electro-hydraulic servo valve applicable to high g-value acceleration environment | |
| CN101270812A (en) | Stepped control type flux valve | |
| CN206458670U (en) | A kind of adjustable suppression servo valve self-oscillation device | |
| CN103452931B (en) | A kind of motor-driven plug-in mounting servo valve | |
| CN103591074B (en) | A kind of suitable in the electrohydraulic servo valve under big g value acceleration environment | |
| CN208997426U (en) | A kind of novel servo control mechanism | |
| CN210700691U (en) | Speed-adjustable fluid nozzle structure | |
| CN208634124U (en) | Screw thread inserting type rotation is straight to drive electrohydraulic servo valve | |
| CN106352123A (en) | Pilot-operated relief valve based on magneto-rheological effect | |
| CN104791594A (en) | Automobile hub bearing automatic grease injection machine | |
| CN203549037U (en) | Dynamic flow balance valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 Termination date: 20170616 |