CN106291144B - The measurement method and device of charged particle carrying capacity in electrostatic separator collecting tank - Google Patents
The measurement method and device of charged particle carrying capacity in electrostatic separator collecting tank Download PDFInfo
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- CN106291144B CN106291144B CN201610593137.1A CN201610593137A CN106291144B CN 106291144 B CN106291144 B CN 106291144B CN 201610593137 A CN201610593137 A CN 201610593137A CN 106291144 B CN106291144 B CN 106291144B
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- charged particle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/24—Arrangements for measuring quantities of charge
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Abstract
The invention discloses the measurement method and relevant apparatus of charged particle carrying capacity in a kind of electrostatic separator collecting tank, this method is accessed charged particle in special charged particle collection assembly, and the induced voltage of each collector unit is then measuredU, in conjunction with the capacitance of each collector unitC, the charge value of charged particle is calculatedQ=C×U.The device includes charged particle collection assembly and data acquisition and analysis instrument；Charged particle collection assembly is made of collector unit；Collector unit is made of inner layer conductive slot and outer layer conductive trough；The outer layer conductive trough of adjacent collector unit connects using adhesive tape and keeps mutually insulated between side in an axial direction, and triangle divider is pasted in adhesive tape；Collector unit connects data collection and analysis instrument by conducting wire.Measurement method of the present invention and device are economical and practical, easy to operate, it is easy to accomplish, and measure accurately, solve the immeasurable problem of charged particle carrying capacity for dropping to electrostatic separator collecting tank.
Description
Technical field
The present invention relates to electrostatic separator correlative study device and method, specifically band in electrostatic separator collecting tank
The measurement method and device of electric charging particle amount.
Background technology
With the high speed development of electronic and information industry, the process problem of more and more electron wastes has become current warp
The new issue that Ji, society and environment sustainable development and utilization of the recycling of renewable resources face.Due to the gold in electronic product
Belong to tens or even hundred times that grade is equivalent to metal content in common mineral, decomposes and the requirement of the technologies of recycling is high, these are electric
Sub- product can not be by traditional approach (as buried and burning) processing, and then electrostatic sorting method is just applied to electron wastes
Recycling field.High-voltage electrostatic sorting can sort the metal and non-metallic particle that size is less than 0.1 mm, or even can be from dust
Recycle precious metal.Electrostatic separator uses negative corona discharge, and when electrode voltage increases to discharge inception voltage, corona pole surface is attached
Close internal field is very strong, and the air dielectric near corona discharge electrode generates corona discharge phenomenon by partial breakdown.Particle to be sorted
Under the collective effects such as electric field force, gravity, centrifugal force, under fall in different collecting tanks.Because the electric conductivity of substance is different, receipts are fallen on
Collect the position also different from slot, realizes the separation of particle to be sorted.Present electrostatic separation technology has been widely used in industry
In production.In assorting room, the principal element that influences particle to be sorted separation is space electrical field and field distribution, and
Influence of the grain carrying capacity to space electrical field and field distribution plays principal element, so to the electrostatic separation of high-voltage electrostatic sorting
The charged quantifier elimination of charged particle is very crucial in machine collecting tank.
The electrostatic separation process of electrostatic separator is：Particle to be sorted is uniformly dispersed in smooth through feeder and material-conveying belt
Ground connection roll surface on, the axle center of transfer roller is grounded, and forms ground connection rotating electrode.Roll surface is corresponding with corona discharge electrode position,
And charging area is formed around it, it is charged when by charging area when sorting particle.Corona discharge electrode (generally connects the negative height of tens of thousands of volts
Pressure) strong corona discharge occurs between transfer roller, make the air ionization around corona discharge electrode, generates a large amount of electronics, cation
And anion.Since the corona discharge electrode of needle-roll shape electrostatic separator differs at a distance from roll surface, in corona discharge electrode and turn
It will produce inhomogeneous field between roller, the electric field strength in the corona discharge electrode place close apart from roll surface is big, the ion concentration of generation
Also big, charging particle to be sorted is more abundant.When sorting particle is turned to transfer roller at charging area, the ion in electric field can be inhaled
It is attached to the surface of particle to be sorted, makes charging particle to be sorted.The transfer roller of charged particle to be sorted and ground connection carries out charge friendship
It changes, the conductive particle velocity of discharge to be sorted is fast, and the non-conductive particle velocity of discharge to be sorted is slow.Then, charged to wait sorting
Particle enters sorting area, and conductive particle to be sorted is identical as the polarity of transfer roller electrode, is repelled by transfer roller electrode, is detached from and turns
Roller surface is allowed to fall on the right side of collector under the resultant direction of gravity, centrifugal force and electric field force；And slow non-of the velocity of discharge
Conduction particle to be sorted just firmly is adsorbed on due to the negative electrical charge of itself not release completely on the surface of ground connection transfer roller electrode,
It is turned at hairbrush with transfer roller, is fixed hairbrush pressure and brushes off, be scattering into the left side of collector, the centre of collector is scattered both
There is metallic particles, also there is non-metallic particle, thus completes the separation of two kinds of different electric conductivity particles to be sorted.
Currently, the research of high-voltage electrostatic sorting device, is seldom related to dropping to the band in electrostatic separator collecting tank
The angle of corona discharge pole and horizontal direction in sorting machine, corona discharge pole can not be accurately positioned in electric charging particle quantifier elimination
With the vertical range of transfer roller, the radical of line corona discharge electrode, corona discharge pole the variations such as shape when, drop to electrostatic separation
How the charged particle carrying capacity of machine collecting tank changes, and can not determine and wait for sorting material collecting tank after assorting room
Influence of the middle charged particle carrying capacity to separating effect.It is referred to without accurate charged data, it also cannot be to high-pressure electrostatic
Sorting machine carries out targetedly Curve guide impeller, so that it improves the efficiency of separation.Therefore, there is an urgent need for one kind can be to electrostatic separator
The relevant apparatus and correlation technique that electrically charged particle carrying capacity measures in collecting tank.
Invention content
For the present invention mainly there are two purpose, one is to provide charged particle carrying capacity in a kind of electrostatic separator collecting tank
Measurement method, to solve the problems, such as that the charged particle carrying capacity of electrostatic separator sorted out is unable to measure, secondly being to provide
The measuring device of charged particle carrying capacity in electrostatic separator collecting tank, during solving electrostatic separator device linguistic term
The problem of lacking the related device measured to charged particle carrying capacity.
What an object of the present invention was realized in：
The measurement method of charged particle carrying capacity in a kind of electrostatic separator collecting tank will pass through electrostatic separator transfer roller point
Particle after choosing accesses in special charged particle collection assembly, then data collection and analysis instrument is utilized to measure the charged particle
It is single that corresponding collection is calculated in conjunction with the capacitance C of each collector unit in the induced voltage U of each collector unit of collection assembly
Charge value Q=C × U of charged particle in member；
Wherein, the charged particle collection assembly is connected successively in the horizontal direction by several collector units is constituted, and is being charged
It is provided with insulating support below powder collection component；The collector unit is by the semi-cylindrical inner layer conductive slot that is coaxially disposed and outer
Layer conductive trough is constituted, and is mutually parallel by the holding of insulating supporting item between inner layer conductive slot and outer layer conductive trough, and internal layer is led
Part between electric slot and outer layer conductive trough in addition to insulating supporting item is air dielectric layer；The outer layer of adjacent collector unit is conductive
Slot connects using adhesive tape and keeps mutually insulated between side in an axial direction, and triangle divider is pasted in adhesive tape；It is each to collect
Unit is connected respectively to by independent conducting wire on data collection and analysis instrument.
The measurement method of charged particle carrying capacity, the capacitance of collector unit in electrostatic separator collecting tank of the present invention
C=(π ε0L1)/ln(R2/R1), wherein ε0It is dielectric constant of vacuum, L1It is the length of conductive trough in axial direction, R1It is internal layer
Radius, the R of conductive trough cross section2It is the radius of outer layer conductive trough cross section.
The second object of the present invention is to what is be achieved：
The measuring device of charged particle carrying capacity in a kind of electrostatic separator collecting tank, including charged particle collection assembly and
Data collection and analysis instrument；The charged particle collection assembly is connected successively in the horizontal direction by several collector units to be constituted, in band
It is provided with insulating support below electric powder collection component；The collector unit by the semi-cylindrical inner layer conductive slot that is coaxially disposed and
Outer layer conductive trough is constituted, and is air dielectric layer between inner layer conductive slot and outer layer conductive trough, and inner layer conductive slot and outer layer are conductive
It is relatively fixed by insulating supporting item between slot；Glue is used between the side of the outer layer conductive trough of adjacent collector unit in an axial direction
Item connects and keeps mutually insulated, and triangle divider is pasted in adhesive tape；Each collector unit is distinguished by independent conducting wire
It is connected on data collection and analysis instrument.
Measurement method of the present invention is economical and practical, easy to operate, it is easy to accomplish, and measure accurately, to high pressure electrostatic separator
Structure Improvement Design have important directive significance, solving charged particle carrying capacity in electrostatic separator collecting tank cannot survey
The technical barrier of amount.The present invention redesigns electrostatic separator collecting tank, forms specific charged particle collection assembly,
It is made of 16 sequentially connected collector units, collector unit is by the double-level-metal side by side and between two layers that bottom surface is semicircular arc
The bathtub construction for filling nonmetallic substance is constituted, and measurement method of the present invention and device are economical and practical, easy to operate, it is easy to accomplish,
And measure accurately, there is important directive significance to the Structure Improvement Design of high pressure electrostatic separator, solve and drop to electrostatic
The immeasurable problem of charged particle carrying capacity of sorting machine collecting tank.
Description of the drawings
Fig. 1 is the measuring device overall structure diagram of the present invention.
Fig. 2 is the cross-sectional view of the collector unit of the measuring device of the present invention.
Fig. 3 is the side structure schematic diagram of the collector unit of the measuring device of the present invention.
In Fig. 1-3：1, inner layer conductive slot, 2, outer layer conductive trough, 3, insulating supporting item, 4, air dielectric layer, 5, triangle
Divider, 6, insulating support, 7, data collection and analysis device instrument；In Fig. 1, L1For length (the i.e. inside and outside layer conductive trough of collector unit
Length in the axial direction), L2For the width (i.e. the diameter of outer layer conductive trough cross section) of collector unit；In Fig. 2, R1For internal layer
Conductive groove radius, R2For outer layer conduction groove radius.
Specific implementation mode
The present invention is the measurement method and measuring device of charged particle carrying capacity in a kind of electrostatic separator collecting tank, below
It is described in detail.
The present invention redesigns electrostatic separator collecting tank, specific charged particle collection assembly is formed, by 16
A sequentially connected collector unit is constituted, and collector unit is filled side by side and between two layers by the double-level-metal that bottom surface is semicircular arc
The bathtub construction of nonmetallic substance is constituted, specific as shown in Figure 1, 2, 3, and the thickness of inner layer conductive slot 1 and outer layer conductive trough 2 is δ
(generally 0.5mm-1mm)；It is separated with thinner insulating supporting item 3 between ectonexine conductive trough；It is removed between ectonexine conductive trough
It is air dielectric layer 4 to go to the part of insulating supporting item；Between every two groups of conductive troughs with insulation adhesive tape it is viscous and on, glue and rear adjacent
Two outer layer conductive troughs between mutually insulated and relative level, insulation adhesive tape above be stained with triangle dividing strip 5 so that particle
It entirely falls in slot, experiment effect can be influenced by preventing the particle after electrostatic separation from falling on insulation adhesive tape top；It all glues after becoming reconciled,
The charged particle fallen into order to prevent in slot is transferred to the earth by outer layer conductive trough 2, need to put the collector unit being linked together
On insulating support 6, specific charged particle collection assembly is so constituted, later again by 16 groups of independent conducting wires respectively by 16
A collector unit is connected on data collection and analysis instrument 7, and it is charged to form charged particle in the electrostatic separator collecting tank of the present invention
The measuring device of amount.
The measurement method is first to calculate the electricity of designed electrostatic separator collecting tank (i.e. each collector unit)
Hold (C), the device of the invention is put into the suitable position of electrostatic separator, after the completion of electrostatic separation process, recycles data
Acquisition and analysis instrument respectively measures (U) induced voltage of the charged particle in each collector unit after sorting.
The capacitance C of collector unit：
C=(π ε0L1)/ln(R2/R1) ... ... (formula 1)
Wherein, ε0It is dielectric constant of vacuum, the length L of conductive trough in axial direction1, the radius of inner layer conductive slot cross section
R1, outer layer conductive trough cross section radius R2。
The calculating of charged particle carrying capacity：The capacitance C of collector unit is multiplied by the induction of corresponding each collector unit
Voltage U, you can show that the charge value Q of charged particle in corresponding electrostatic separator collecting tank, i.e. Q=C × U, the charge value are
For the carrying capacity of charged particle in corresponding electrostatic separator collecting tank, to obtain charged particle in electrostatic separator collecting tank
The distribution situation of carrying capacity.
Claims (3)
1. the measurement method of charged particle carrying capacity in a kind of electrostatic separator collecting tank, characterized in that electrostatic separation will be passed through
Particle after the sorting of machine transfer roller accesses in special charged particle collection assembly, then utilizes described in the measurement of data collection and analysis instrument
The induced voltage of each collector unit of charged particle collection assemblyU, in conjunction with the capacitance of each collector unitC, correspondence is calculated
Collector unit in charged particle charge valueQ=C×U；
Wherein, the charged particle collection assembly is connected successively in the horizontal direction by several collector units is constituted, in charged particle
It is provided with insulating support below collection assembly；The collector unit is led by the semi-cylindrical inner layer conductive slot and outer layer being coaxially disposed
Electric slot is constituted, and is mutually parallel by the holding of insulating supporting item between inner layer conductive slot and outer layer conductive trough, and inner layer conductive slot
Part between outer layer conductive trough in addition to insulating supporting item is air dielectric layer；The outer layer conductive trough edge of adjacent collector unit
Mutually insulated is connected and kept using adhesive tape between axial side, and triangle divider is pasted in adhesive tape；Each collector unit
It is connected respectively on data collection and analysis instrument by independent conducting wire.
2. the measurement method of charged particle carrying capacity in electrostatic separator collecting tank according to claim 1, characterized in that
The capacitance of collector unit；
Wherein,ε 0It is dielectric constant of vacuum,L 1It is the length of conductive trough in axial direction,R 1It is the half of inner layer conductive slot cross section
Diameter,R 2It is the radius of outer layer conductive trough cross section.
3. the measuring device of charged particle carrying capacity in a kind of electrostatic separator collecting tank, characterized in that received including charged particle
Collect component and data acquisition and analysis instrument；The charged particle collection assembly is connected structure successively in the horizontal direction by several collector units
At being provided with insulating support below charged particle collection assembly；The collector unit is by the semi-cylindrical internal layer that is coaxially disposed
Conductive trough and outer layer conductive trough are constituted, and are air dielectric layer between inner layer conductive slot and outer layer conductive trough, and inner layer conductive slot and
It is relatively fixed by insulating supporting item between outer layer conductive trough；The side of the outer layer conductive trough of adjacent collector unit in an axial direction it
Between mutually insulated is connected and kept using adhesive tape, triangle divider is pasted in adhesive tape；Each collector unit passes through independent
Conducting wire is connected respectively on data collection and analysis instrument.
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| CN201610593137.1A CN106291144B (en) | 2016-07-26 | 2016-07-26 | The measurement method and device of charged particle carrying capacity in electrostatic separator collecting tank |
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| CN201610593137.1A CN106291144B (en) | 2016-07-26 | 2016-07-26 | The measurement method and device of charged particle carrying capacity in electrostatic separator collecting tank |
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| CN106291144A CN106291144A (en) | 2017-01-04 |
| CN106291144B true CN106291144B (en) | 2018-10-23 |
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Citations (4)
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| EP2581076A1 (en) * | 2011-10-13 | 2013-04-17 | Uhlmann Pac-Systeme GmbH & Co. KG | Device and method for testing mobile tablets |
| CN103513119A (en) * | 2013-10-18 | 2014-01-15 | 河北大学 | Method and device for measuring charge density distribution on surface of rotating roll of electrostatic sorting machine |
| CN103529312A (en) * | 2013-10-23 | 2014-01-22 | 中国矿业大学 | System for measuring micro-fine pulverized-coal particle charge-mass ratio distribution |
| CN103551252A (en) * | 2013-10-31 | 2014-02-05 | 河北大学 | Positioning device and method for electric field space of high-voltage electrostatic separation equipment |
-
2016
- 2016-07-26 CN CN201610593137.1A patent/CN106291144B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2581076A1 (en) * | 2011-10-13 | 2013-04-17 | Uhlmann Pac-Systeme GmbH & Co. KG | Device and method for testing mobile tablets |
| CN103513119A (en) * | 2013-10-18 | 2014-01-15 | 河北大学 | Method and device for measuring charge density distribution on surface of rotating roll of electrostatic sorting machine |
| CN103529312A (en) * | 2013-10-23 | 2014-01-22 | 中国矿业大学 | System for measuring micro-fine pulverized-coal particle charge-mass ratio distribution |
| CN103551252A (en) * | 2013-10-31 | 2014-02-05 | 河北大学 | Positioning device and method for electric field space of high-voltage electrostatic separation equipment |
Non-Patent Citations (1)
| Title |
|---|
| 针辊式高压静电分选电场的数值模拟;张子生 等;《高电压技术》;20150228;第41卷(第2期);第485-490页 * |
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| CN106291144A (en) | 2017-01-04 |
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