CN209442708U - A kind of dielectrophoresis electrode structure - Google Patents
A kind of dielectrophoresis electrode structure Download PDFInfo
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- CN209442708U CN209442708U CN201822050998.2U CN201822050998U CN209442708U CN 209442708 U CN209442708 U CN 209442708U CN 201822050998 U CN201822050998 U CN 201822050998U CN 209442708 U CN209442708 U CN 209442708U
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- electrode plate
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- electrode
- dielectrophoresis
- membrane structure
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Abstract
The utility model discloses a kind of dielectrophoresis electrode structures, including two panels electrode plate, two panels electrode plate is separately connected AC power source difference output end, mutually insulated between two panels electrode plate, it is characterized by: a piece of in the two panels electrode plate is metal stretching net electrode plate, another is metal porous membrane structure electrode plate, and metal stretching net electrode plate and metal porous membrane structure electrode plate are arranged in parallel.The dielectrophoresis electrode structure of the utility model, wherein a plate electrode is metal stretching net electrode plate, another plate electrode is metal porous membrane structure electrode plate, so that film is zero at a distance from electrode, plays the effect of dielectrophoresis to greatest extent, improves separative efficiency.
Description
Technical field
The dielectrophoresis electrode that the utility model relates to be separated in a fluid to particulate matter and drop, in particular to one
The dielectrophoresis electrode structure that dielectrophoresis technology is used in combination kind with membrane technology.
Background technique
Dielectrophoresis describes the electroneutral particle positioned at non-well-balanced electric field, due to dielectric polarization effect and generate
Translational motion.The dipole moment on particle is generated, can be indicated by two identical carried charges but opposite polarity charge, when it
In mal-distribution on granular boundary, generate a macroscopical dipole moment.When this dipole moment is located in unshapeliness electric field,
The different of local electric field strength on particle both sides generate a resulting net force, referred to as dielectrophoresis force.Due to being suspended in medium
Particle has different dielectric properties (dielectric constant) from medium, referred to as positive if particle is mobile towards the direction that electric field strength enhances
Property dielectrophoresis, if otherwise the direction weakened towards electric field strength of particle is mobile, referred to as feminine gender dielectrophoresis.
As particle (radius r, relative dielectric constant εp, conductivityσp) being suspended in fluid media (medium), (relative dielectric constant is
εf, conductivity σf) when, the dielectrophoresis force that is received are as follows:
In formula:(here:)；E is additional
The root mean square of electric field strength；ε0It is permittivity of vacuum；ω is electric field angular frequency.DEP power direction will depend on k*The real number of (ω)
Part, i.e. the CM factor are positive dielectrophoresis in CM > 0, and particle is from existing fringing field regional movement to high electric field region
Negative dielectrophoresis.
In the prior art, sometimes using Cottrell process is used, this method utilizes electrophoresis for air cleaning
The principle of (electrophoresis, EP) ionizes the gas molecule in air in high-voltage dc, generates a large amount of electricity
Son and ion, under the action of electric field force towards the electrode movement electrically opposite with electronics and ion.Encounter in moving process
Dust particles in air-flow keep its charged, and Charged particle is acted in electric field force to electrode movement, realize solids or liquid
The separation of body particle and air-flow.
Dielectrophoresis technology and the electrophoretic techniques of electrostatic precipitation the difference is that:
(1) dielectrophoresis manipulation is electroneutral particle, makes its effect due to dielectric polarization and the translational motion that generates；
Electrophoresis manipulation is electronics and ion, its load is made to generate displacement on particle.
(2) particle motion is unrelated with the direction of electric field in dielectrophoresis, only dielectric constant and medium with itself
Dielectric constant it is related；Particle motion depends on the direction of the electrically charged symbol and electric field of particle, electric field side in electrophoresis
To reversion, then the direction of motion is inverted.
(3) dielectrophoresis needs inhomogeneous field；Electrophoresis can all occur in field uniform or heterogeneous.
(4) size of dielectrophoresis force is proportional to cube of particle diameter；The size of electrophoretic force is proportional to particle and is charged
The number of lotus.
It is that film and electrode separation use that existing dielectrophoresis electrode is used in combination all with film, is covered by electric field certain
Film is included in the range of dielectrophoresis covering and worked by distance.For example cylinder interdigital electrode is used, after surface adds supporting layer,
PVDF organic film is enclosed again, is mitigated fouling membrane using dielectrophoresis effect, is increased infiltration capacity, improve the filtering rank of film, improves
The service life of film.
In general, remoter apart from electrode, active force is lower, and function and effect are poorer.Due to the separation of film and electrode,
It is bound to cause and is spaced a distance, cause the strongest effect of dielectrophoresis that cannot be added on film.
Existing dielectrophoresis electrode, such as the interdigital type of cylinder, punching net type, metal plate strip type etc. are required to essence
Fining-off manufacture, manufacture and matching requirements are higher.
The separation of film and electrode uses, so that structure is increasingly complex, occupied space increases, installation manufacture it is also increasingly complex and
Inconvenience is also unfavorable for reducing manufacturing cost.
Summary of the invention
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of dielectrophoresis electrode structure, wherein
One plate electrode is metal stretching net electrode plate, and another plate electrode is metal porous membrane structure electrode plate so that film and electrode away from
From being zero, the effect of dielectrophoresis is played to greatest extent, improves separative efficiency.
The utility model solves its technical problem and is achieved through the following technical solutions:
A kind of dielectrophoresis electrode structure, including two panels electrode plate, it is defeated that two panels electrode plate is separately connected AC power source difference
Outlet, mutually insulated between two panels electrode plate, it is characterised in that: a piece of in the two panels electrode plate is metal stretching net electrode
Plate, another is metal porous membrane structure electrode plate, metal stretching net electrode plate and metal porous membrane structure electrode plate parallel
Column.
Moreover, the metal stretching net electrode plate and metal porous membrane structure electrode coiled sheet song are cylindrical shape, metal stretching
Net electrode plate is located at metal porous membrane structure electrode intralamellar part and coaxial arrangement.
Moreover, the spacing between the metal stretching net electrode plate and metal porous membrane structure electrode plate is≤50mm.
Moreover, insulation is arranged in the metal stretching net electrode plate, metal porous membrane structure electrode plate outside a piece of electrode plate
Layer.
Moreover, the metal porous membrane structure electrode plate is metal net electrode plate.
Moreover, the metal porous membrane structure electrode plate is metal powder sintered porous filtering electrode plate.
Moreover, the metal porous membrane structure electrode plate is sintered metal mesh electrode plate.
It the advantages of the utility model and has the beneficial effect that
1, the dielectrophoresis electrode structure of the utility model, the metal stretching net electrode plate of use and metal porous membrane structure
Electrode plate, in the case where connecting AC power source, the grid sideline of metal stretching net electrode plate and metal porous membrane structure electrode
The film surface of plate forms dielectrophoresis, relative to the sideline on previous two panels electrode plate to sideline, point to point
Mode is capable of the generation of significantly more efficient guarantee dielectrophoresis force, and metal porous membrane structure electrode plate is not only easy to process
Manufacture guarantees dielectrophoresis effect, while being also used as filter membrane and carrying out separating and filtering to raw water, so that filter membrane and electrode
Processing distance be zero, to greatest extent play dielectrophoresis effect, improve separative efficiency, can be used for separating micron order
Grain or drop.
2, the dielectrophoresis electrode structure of the utility model, metal stretching net electrode plate and metal porous membrane structure electrode plate
Can have certain rigidity and flexibility according to selection and technique difference, it is rollable to become cylinder-shaped or open and flat use.
3, the dielectrophoresis electrode structure of the utility model, metal stretching net electrode plate and metal porous membrane structure electrode plate
The material of conventional batch processing and manufacturing mode can be selected, manufacturing cost is low；It is resistance to the porous membrane structure electrode plate that metal manufactures
It impacts, is corrosion-resistant, resistance to cleaning, working service is more convenient reliable.
4, the dielectrophoresis electrode structure of the utility model, wherein a piece of electrode plate is metal stretching net electrode plate, it is another
Plate electrode plate can be metal powder sintered porous filter material electrode plate or sintered metal mesh electrode plate, and two panels electrode plate is flat
Row arrangement, metal powder sintered porous filter material electrode plate or sintered metal mesh electrode plate can provide higher filtering essence
Degree, itself possess certain intensity can self-supporting, and also possess the Common advantages of metal net.
5, the dielectrophoresis electrode structure of the utility model, wherein a piece of electrode plate is metal stretching net electrode plate, it is another
Plate electrode plate can be that metal net electrode plate had not only been electrode plate but also had been filter membrane, and film surface is electrode surface, can be most
The effect of the performance dielectrophoresis of limits, selection difference can make surface impact resistance, corrosion-resistant, resistance to cleaning, and working service is more square
It can lean on；Metal stretching net electrode plate and metal net electrode plate are that film can be effectively reduced with batch micro operations product
With electrode cost, rollable or open and flat use；The metal stretching net electrode plate and metal net electrode plate of given specification, effect
Effect is only related with parallel spacing in structure, this only to need to consider required distance in assembling, it is not necessary to consider further that other two
The constraint of a dimension, thus technique requires to reduce many difficulty, controls convenient for quality.
6, the dielectrophoresis electrode structure of the utility model, wherein a plate electrode be metal stretching net electrode plate, another
Electrode is metal porous membrane structure electrode plate, so that film is zero at a distance from electrode, plays the effect of dielectrophoresis to greatest extent
Fruit improves separative efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the dielectrophoresis electrode structure of the utility model；
Fig. 2 is the schematic diagram one of the dielectrophoresis separation process of the utility model；
Fig. 3 is the schematic diagram two of the dielectrophoresis separation process of the utility model；
Fig. 4 is the schematic diagram three of the dielectrophoresis separation process of the utility model；
Detailed description of the invention
1- metal porous membrane structure electrode plate, 2- stainless steel metal stretching nets electrode plate.
Specific embodiment
Below by specific embodiment, the utility model is described in further detail, following embodiment be it is descriptive, no
It is restrictive, protection scope of this utility model cannot be limited by this.
Embodiment 1:
A kind of dielectrophoresis electrode structure, as shown in Figure 1, including two panels electrode plate, two panels electrode plate is separately connected exchange
Power supply difference output end, mutually insulated between two panels electrode plate.Spacing 5mm forms electrode pair.The wound of this dielectrophoresis electric machine structure
New place is: a piece of stainless steel metal stretching nets electrode plate 2 for a thickness of 0.5mm, stainless steel metal in two panels electrode plate
The surface of stretching nets electrode plate is provided with insulating layer.Another is metal porous membrane structure electrode plate 1, metal stretching net electrode plate
It is arranged in parallel with metal porous membrane structure electrode plate.This metal porous membrane structure electrode plate is stainless steel metal mesh grid electrode
Plate, the stainless steel metal mesh grid electrode plate are 1000 mesh.
As shown in Fig. 2, the raw water containing particulate matter is entered by stainless steel metal stretching nets electrode plate 2, compiled through stainless steel metal
After knitmesh electrode plate 1 filters, produces water and be discharged by the other side, particulate matter is trapped in raw water.
Metal stretching net electrode plate and metal porous membrane structure electrode plate can also crimp as cylindrical shape, metal stretching net electricity
Pole plate is located at metal porous membrane structure electrode intralamellar part and coaxial arrangement.
Embodiment 2:
A kind of dielectrophoresis electrode structure, as shown in Figure 1, including two panels electrode plate, two panels electrode plate is separately connected exchange
Power supply difference output end, mutually insulated between two panels electrode plate.Spacing 50mm forms electrode pair.This dielectrophoresis electric machine structure
Innovation is: a piece of stainless steel metal stretching nets electrode plate 2 for a thickness of 0.5mm in two panels electrode plate, stainless steel gold
The surface for belonging to stretching nets electrode plate is provided with insulating layer.Another is metal porous membrane structure electrode plate 1, metal stretching net electrode
Plate and metal porous membrane structure electrode plate are arranged in parallel.This metal porous membrane structure electrode plate is stainless steel metal sintered meshwork electrode
Plate, the stainless steel metal sintered meshwork electrode plate are 1000 mesh.
As shown in figure 3, the raw water containing particulate matter is entered by stainless steel metal sintered meshwork electrode plate 1, water is produced by stainless steel gold
Belong to the discharge of 2 side of stretching nets electrode plate, particulate matter is trapped in raw water.
Metal stretching net electrode plate and metal porous membrane structure electrode plate can also crimp as cylindrical shape, metal stretching net electricity
Pole plate is located at metal porous membrane structure electrode intralamellar part and coaxial arrangement.
Embodiment 3:
A kind of dielectrophoresis electrode structure, as shown in Figure 1, including two panels electrode plate, two panels electrode plate is separately connected exchange
Power supply difference output end, mutually insulated between two panels electrode plate.Spacing 30mm forms electrode pair.This dielectrophoresis electric machine structure
Innovation is: a piece of stainless steel metal stretching nets electrode plate 2 for a thickness of 0.5mm in two panels electrode plate, stainless steel gold
The surface for belonging to stretching nets electrode plate is provided with insulating layer.Another is metal porous membrane structure electrode plate 1, metal stretching net electrode
Plate and metal porous membrane structure electrode plate are arranged in parallel.This metal porous membrane structure electrode plate is that stainless steel metal is powder sintered more
Hole filtering material electrode plate, the powder sintered porous filter material electrode plate of the stainless steel metal are.
As shown in figure 4, raw water on filter disc upper layer by the way of cross-flow filtration, by stainless steel metal stretching nets electrode plate 2
Into, after the powder sintered porous filter material electrode plate 1 of stainless steel metal filters, produces water and be discharged from below, particulate matter retention
In raw water, taken away by raw water.
Metal stretching net electrode plate and metal porous membrane structure electrode plate can also crimp as cylindrical shape, metal stretching net electricity
Pole plate is located at metal porous membrane structure electrode intralamellar part and coaxial arrangement.
The working principle of the utility model are as follows:
Metal stretching net electrode plate used by the utility model and metal porous membrane structure electrode plate, are non-flat-plate type
Structure applies alternating voltage to it and generates alternating electric field, above generates inhomogeneous field microcosmic for non-smooth surface, is generated with this
Dielectrophoresis effect.Metal stretching net electrode plate used by the utility model and metal porous membrane structure electrode plate, are connecting
In the case where AC power source, the grid sideline of metal stretching net electrode plate and the film surface of metal porous membrane structure electrode plate are formed
Dielectrophoresis can be more relative to the sideline on previous two panels electrode plate to sideline, point to the mode of point
The effective generation for guaranteeing dielectrophoresis force, and metal porous membrane structure electrode plate is not only easy to fabricate, and guarantees dielectric electricity
Swimming effect, while being also used as filter membrane and separating and filtering is carried out to raw water.
Metal stretching net electrode plate used by the utility model, using metal stretching net as electrode plate；It is metal porous
Membrane structure electrode plate uses metal net, metal powder sintered porous filter plate or sintered metal mesh as electrode plate, wherein
Metal stretching net, metal net, metal powder sintered porous filter plate and sintered metal mesh are products common on the market,
Preparation method are as follows: metal stretching net is manufactured with metal plate, the static pressure such as mesh grid metal wire knitted, sintering filter plate metal powder
High temperature sintering etc., electric conductivity is good.
When original technology dielectric iontophoretic electrode is used in combination with film, filter membrane is independently of except two plate electrodes,
It is an other component, film itself has thickness, therefore close, the usual dielectrophoresis that cannot be pasted with dielectrophoresis electrode surface
Effect is weakening rapidly far from surface location (except special designing).The utility model directly adopts one of electrode plate
With metal porous membrane structure, metal powder sintered porous filter plate or sintered metal mesh are as electrode plate, while as micropore mistake
Filter membrane uses, therefore realizes that the film process interface of filter membrane and the processing distance of formed electrode dielectrophoresis acting surface are zero.
Though the utility model discloses embodiment and attached drawing, it will be appreciated by those skilled in the art that: it is not departing from
In the utility model and spirit and scope of the appended claims, various substitutions, changes and modifications be all it is possible, therefore, this
The range of utility model is not limited to the embodiment and attached drawing disclosure of that.
Claims (7)
1. a kind of dielectrophoresis electrode structure, including two panels electrode plate, two panels electrode plate is separately connected the output of AC power source difference
It holds, mutually insulated between two panels electrode plate, it is characterised in that: a piece of in the two panels electrode plate is metal stretching net electrode plate,
Another is metal porous membrane structure electrode plate, and metal stretching net electrode plate and metal porous membrane structure electrode plate are arranged in parallel.
2. dielectrophoresis electrode structure according to claim 1, it is characterised in that: the metal stretching net electrode plate and gold
Genus polyporus membrane structure electrode plate curling for cylindrical shape, metal stretching net electrode plate be located at metal porous membrane structure electrode intralamellar part and
Coaxial arrangement.
3. dielectrophoresis electrode structure according to claim 1, it is characterised in that: the metal stretching net electrode plate and gold
Spacing between genus polyporus membrane structure electrode plate is≤50mm.
4. dielectrophoresis electrode structure according to claim 1, it is characterised in that: the metal stretching net electrode plate, gold
Insulating layer is set outside a piece of electrode plate in genus polyporus membrane structure electrode plate.
5. dielectrophoresis electrode structure according to any one of claims 1-4, it is characterised in that: the metal porous membrane
Structure electrode plate is metal net electrode plate.
6. dielectrophoresis electrode structure according to any one of claims 1-4, it is characterised in that: the metal porous membrane
Structure electrode plate is metal powder sintered porous filtering electrode plate.
7. dielectrophoresis electrode structure according to any one of claims 1-4, it is characterised in that: the metal porous membrane
Structure electrode plate is sintered metal mesh electrode plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822050998.2U CN209442708U (en) | 2018-12-07 | 2018-12-07 | A kind of dielectrophoresis electrode structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822050998.2U CN209442708U (en) | 2018-12-07 | 2018-12-07 | A kind of dielectrophoresis electrode structure |
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| CN209442708U true CN209442708U (en) | 2019-09-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109574159A (en) * | 2018-12-07 | 2019-04-05 | 智造起源科技有限公司 | A kind of dielectrophoresis electrode structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109574159A (en) * | 2018-12-07 | 2019-04-05 | 智造起源科技有限公司 | A kind of dielectrophoresis electrode structure |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190927 Termination date: 20211207 |
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| CF01 | Termination of patent right due to non-payment of annual fee |