CN104941812A - Micro-fine particle material friction electric separation method and device adopting lateral negative pressure adsorption - Google Patents
Micro-fine particle material friction electric separation method and device adopting lateral negative pressure adsorption Download PDFInfo
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- CN104941812A CN104941812A CN201510423931.7A CN201510423931A CN104941812A CN 104941812 A CN104941812 A CN 104941812A CN 201510423931 A CN201510423931 A CN 201510423931A CN 104941812 A CN104941812 A CN 104941812A
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Abstract
The invention relates to a micro-fine particle material friction electric separation method and device adopting lateral negative pressure adsorption. When micro-fine particle materials pass through a friction electrification device under the carrying effect of airflow, friction and impact are generated among particles with different ingredients so that charges different in polarity and electric quantity can be carried and ejected into a high-voltage electrostatic field; anisotropic electrified materials enter the high-voltage electrostatic filed to be affected by different electric field forces, and the electrified materials offset in the direction of the electric field with the opposite polarity; moreover, as a Roots blower sucks pipelines communicated with the two sides of the high-voltage electrostatic field in the air supply process, negative pressure chambers can be formed between a baffle with holes and electrode plates at the two sides in the high-voltage electrostatic field, and under the adsorption effect of the negative pressure chambers, the anisotropic electrified particles deflect fast in the moving direction to enter the negative pressure chambers to achieve fast separation of the materials.
Description
Technical field
The present invention relates to fine granule material friction electrical selection method and the device of side direction negative-pressure adsorption, in order to realize different in nature charged particle in high-voltage electrostatic field quick, be efficiently separated, belong to Mineral Processing Engineering and agricultural engineering field, be mainly used in the separation of complicated mineralogical composition, the separation process of agricultural product and impurity can also be used for.
Background technology
Friction electrical selection technology may be used for fine granule material particle multicomponent physical separation.Fine granule material particle is after frictional impact is charged, and different component carries polarity difference, electricity electric charge not etc.In high-voltage electrostatic field, charged material produces motion deflection and is separated from each other under electric field force effect.Charged particle enters high voltage electric field under the carrying of air-flow, be subject to gas force effect comparatively strong, and high-voltage electrostatic field battery lead plate spacing is comparatively large, causes charged particle can not to deflect in time and be separated, reduces separative efficiency.This is particularly remarkable for the particle that electrically charged matter is smaller.And in high-voltage electrostatic field, different in nature charged particle can not realize motion deflection according to ideal state and be separated, mainly between charged particle, there is phase mutual friction, collision with wall and contact in particle, cause Particle surface charge to create transfer or neutralization, have impact on the direction of motion and the separation process of charged particle.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides fine granule material friction electrical selection method and the device of side direction negative-pressure adsorption, can make charged particle in high voltage electric field motion process, be subject to the negative-pressure adsorption active force identical with electric field force direction, thus achieve the separation fast and efficiently of different in nature charged material.
The present invention is obtained by following technical proposals: a kind of fine granule material friction electrical selection method of side direction negative-pressure adsorption, comprise the following steps: fine granule material under air-flow rolling action through friction belt electrical equipment, friction, collision effect is produced between the particle of different component, thus carry polarity difference, electricity electric charge not etc., and be injected into high-voltage electrostatic field; The charged material of the opposite sex enters in high-voltage electrostatic field the effect being subject to different electric field force, charged material offsets to opposite polarity direction of an electric field, and owing to aspirating the pipeline being communicated with both sides, high-voltage electrostatic field during roots blower air feed, make the baffle of porous baffle in high-voltage electrostatic field and form negative pressure chamber between the battery lead plate of both sides, under the suction-operated of negative pressure chamber, the opposite sex charged particle direction of motion deflects fast and enters in negative pressure chamber, realizes the quick separating of material; Charged material in negative pressure chamber, what particle diameter was larger falls into collector, and what particle diameter was less enters the separated collection of cyclone separator by negative-pressure pipeline, and the material not entering negative pressure chamber is discharged bottom high-voltage electrostatic field.
A fine granule material friction electrical selection device for side direction negative-pressure adsorption, comprises roots blower, the charging gear be connected in turn with roots blower, friction belt electrical equipment and high-voltage electrostatic field, the pressure regulator be connected with high-voltage electrostatic field and high voltage source; High-voltage electrostatic field comprises insulation crust, and top and bottom centre's correspondence of housing are provided with charging aperture and discharging opening, and the both sides of housing are connected with battery lead plate, and the below of two battery lead plates is respectively equipped with collector; Be provided with two pieces of baffle of porous baffles parallel with battery lead plate in housing, between baffle plate and battery lead plate, form negative pressure chamber, between two baffle plates, form the material dropping channel being communicated with discharging opening and charging aperture; The both sides of high-voltage electrostatic field are connected to dust filter unit, and the outer end of dust filter unit is connected with negative tube, and the other end of negative tube connects cyclone dust collectors, and the outlet of cyclone dust collectors is connected with the air entry of roots blower.
Described baffle plate is processed with multiple tracks rectangular through holes along its short transverse is equally spaced, and the two ends of through hole are semicircle.
Described baffle plate adopts pmma material to make.
The inner end of described dust filter unit protrudes from battery lead plate and arranges.
Described baffle plate is connected by inclined support panel with the top mouth of collector.
The discharging opening of described high-voltage electrostatic field is communicated with conveyance conduit.
Mounted valve on described negative tube, for regulating negative pressure chamber's pressure.
Described charging gear involving vibrations batcher and material bin, the discharging opening of oscillating feeder is positioned at above material bin, is continued to the feeding of friction belt electrical equipment by material bin.
The air outlet of described roots blower arranges spinner flowmeter.
The invention has the beneficial effects as follows: fine granule material enters high-voltage electrostatic field after frictional electrification, because baffle plate side exists negative-pressure adsorption effect, charged particle is while being subject to electric field force effect, also be subject to the negative-pressure adsorption power effect identical with electric field force direction, contribute to the motion deflection of different in nature charged particle, reduce the probability of frictional impact between charged particle, reduce the time contacted with each other, thus achieve the efficient separation of fine granule material friction electrical selection.
Accompanying drawing explanation
Fig. 1 is the example structure schematic diagram of the fine granule material friction electrical selection device of side direction negative-pressure adsorption of the present invention.
Fig. 2 is baffle arrangement schematic diagram.
Fig. 3 is battery lead plate and dust filter unit scheme of installation.
Fig. 4 is the side view of Fig. 3.
In accompanying drawing, the mark of each parts is as follows: 1. roots blower, 2. spinner flowmeter, 3. material bin, 4. oscillating feeder, 5. friction belt electrical equipment, 6. collector, 7. inclined support panel, 8. baffle plate, 9. dust filter unit, 10. control valve, 11. battery lead plates, 12. screws, 13. control valves, 14. cyclone separators, 15. pressure regulators, 16. high voltage sourcies.
Detailed description of the invention
The fine granule material friction electrical selection method of side direction negative-pressure adsorption: in energising situation, microfine particle evenly enters material bin 3 by oscillating feeder 4, falls into conveyance conduit at Gravitative Loads; Roots blower 1 works and produces air-flow, and fine granule material, when friction belt electrical equipment 5, produces friction, collision effect between the particle of different component, thus carries polarity difference, electricity electric charge not etc., and is injected into high-voltage electrostatic field; The charged material of the opposite sex enters in high-voltage electrostatic field the effect being subject to different electric field force, and charged material offsets to opposite polarity direction of an electric field, and carried charge is less or uncharged material falls; Owing to the battery lead plate 11 of high-voltage electrostatic field being provided with the negative tube being communicated with roots blower 1 air entry, during roots blower 1 air feed, negative tube is aspirated, the baffle of porous baffle 8 be located in high-voltage electrostatic field is made to form negative pressure chamber respectively and between two electrode plate 11, under the suction-operated of negative pressure chamber, the different in nature charged particle direction of motion is deflected fast to enter in negative pressure chamber, realizes the quick separating of material; Charged material in negative pressure chamber, what particle diameter was larger falls into collector 6, and what particle diameter was less enters the separated collection of cyclone separator 14 by negative-pressure pipeline, and the material not entering negative pressure chamber falls into bottom high-voltage electrostatic field, enter in material conveying pipe by pipeline, reenter electric separation operation.
The fine granule material friction electrical selection device of side direction negative-pressure adsorption, as accompanying drawing 1,2, shown in 3 and 4, this device comprises roots blower 1, the blowing mouth of roots blower 1 connects material conveying pipe, conveyance conduit is provided with spinner flowmeter 2 near the position of roots blower 1, when roots blower 1 operates, provide the compressed air of certain pressure and flow, flow can be recorded by spinner flowmeter 2; Material conveying pipe is connected with friction belt electrical equipment 5 and high-voltage electrostatic field in turn by flange; Oscillating feeder 4 is provided with between roots blower 1 and friction belt electrical equipment 5, the material bin 3 be connected with material conveying pipe is provided with below the discharging opening of oscillating feeder 4, microfine particle evenly enters material bin 3 by oscillating feeder 4, falls into conveyance conduit at Gravitative Loads; Material is brought in friction belt electrical equipment 5 by the air-flow that roots blower 1 produces and is entered high-voltage electrostatic field after frictional electrification; Both sides, high-voltage electrostatic field are provided with battery lead plate 11, and battery lead plate 11 is connected with the insulation crust of high-voltage electrostatic field by bolt, wherein electrode plate 11 ground connection, and another electrode plate 11 connects high voltage source 16, and high voltage source 16 connects pressure regulator 15; The two bottom sides of high-voltage electrostatic field is provided with collector 6; The middle part of two electrode plate 11 and the sidewall of housing are arranged with through hole respectively, insert in through hole and connect dust filter unit 9, one end of dust filter unit 9 protrudes from battery lead plate 11 wall, contribute to the free landing of absorbate material particle, the other end protrudes from the sidewall of housing and is connected with negative tube, two-way negative tube is respectively equipped with control valve 10,13, be connected with the entrance of a cyclone separator 14 after two-way negative tube intersects at a place, the outlet of cyclone separator 14 is connected with the air entry of roots blower 1; Be provided with two pieces of lucite baffle of porous baffles 8 parallel with battery lead plate 11 in electric field, described baffle plate 8 is processed with multiple tracks rectangular through holes along its short transverse is equally spaced, and the two ends of through hole are semicircle; Baffle plate 8 forms negative pressure chamber respectively and between two electrode plate 11, the material dropping channel being communicated with discharging opening and charging aperture is formed between two baffle plates 8, described discharging opening is by Flange joint one discharge nozzle, and the other end of discharge nozzle is connected with the Material pipeline below material bin 3; Be connected by inclined support panel 7 between baffle plate 8 and the top mouth of collector 6, be convenient to the free landing of charged material and collected by collector 6.
Claims (10)
1. the fine granule material friction electrical selection method of a side direction negative-pressure adsorption, it is characterized in that, comprise the following steps: fine granule material under air-flow rolling action through friction belt electrical equipment, friction, collision effect is produced between the particle of different component, thus carry polarity difference, electricity electric charge not etc., and be injected into high-voltage electrostatic field; The charged material of the opposite sex enters in high-voltage electrostatic field the effect being subject to different electric field force, charged material offsets to opposite polarity direction of an electric field, and owing to aspirating the pipeline being communicated with both sides, high-voltage electrostatic field during roots blower air feed, make the baffle of porous baffle in high-voltage electrostatic field and form negative pressure chamber between the battery lead plate of both sides, under the suction-operated of negative pressure chamber, the opposite sex charged particle direction of motion deflects fast and enters in negative pressure chamber, realizes the quick separating of material; Charged material in negative pressure chamber, what particle diameter was larger falls into collector, and what particle diameter was less enters the separated collection of cyclone separator by negative-pressure pipeline, and the material not entering negative pressure chamber is discharged bottom high-voltage electrostatic field.
2. the fine granule material friction electrical selection method of a kind of side direction negative-pressure adsorption according to claim 1, is characterized in that, the material not entering negative pressure chamber is discharged to material conveying pipe bottom high-voltage electrostatic field, reenters electric separation operation.
3. a fine granule material friction electrical selection device for side direction negative-pressure adsorption, is characterized in that, comprise roots blower, the charging gear be connected in turn with roots blower, friction belt electrical equipment and high-voltage electrostatic field, the pressure regulator be connected with high-voltage electrostatic field and high voltage source; High-voltage electrostatic field comprises insulation crust, and top and bottom centre's correspondence of housing are provided with charging aperture and discharging opening, and the both sides of housing are connected with battery lead plate, and the below of two battery lead plates is respectively equipped with collector; Be provided with two pieces of baffle of porous baffles parallel with battery lead plate in housing, between baffle plate and battery lead plate, form negative pressure chamber, between two baffle plates, form the material dropping channel being communicated with discharging opening and charging aperture; The both sides of high-voltage electrostatic field are connected to dust filter unit, and the outer end of dust filter unit is connected with negative tube, and the other end of negative tube connects cyclone dust collectors, and the outlet of cyclone dust collectors is connected with the air entry of roots blower.
4. the fine granule material friction electrical selection device of a kind of side direction negative-pressure adsorption according to claim 3, is characterized in that, described baffle plate is processed with multiple tracks rectangular through holes along its short transverse is equally spaced, and the two ends of through hole are semicircle; Described baffle plate adopts pmma material to make.
5. the fine granule material friction electrical selection device of a kind of side direction negative-pressure adsorption according to claim 3, is characterized in that, the inner end of described dust filter unit protrudes from battery lead plate and arranges.
6. the fine granule material friction electrical selection device of a kind of side direction negative-pressure adsorption according to claim 3, is characterized in that, described baffle plate is connected by inclined support panel with the top mouth of collector.
7. the fine granule material friction electrical selection device of a kind of side direction negative-pressure adsorption according to claim 3, is characterized in that, the discharging opening of described high-voltage electrostatic field is communicated with conveyance conduit.
8. the fine granule material friction electrical selection device of a kind of side direction negative-pressure adsorption according to claim 3, is characterized in that, mounted valve on described negative tube, for regulating negative pressure chamber's pressure.
9. the fine granule material friction electrical selection device of a kind of side direction negative-pressure adsorption according to claim 3, it is characterized in that, described charging gear involving vibrations batcher and material bin, the discharging opening of oscillating feeder is positioned at above material bin, is continued to the feeding of friction belt electrical equipment by material bin.
10. the fine granule material friction electrical selection device of a kind of side direction negative-pressure adsorption according to claim 3, it is characterized in that, the air outlet of described roots blower arranges spinner flowmeter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510423931.7A CN104941812B (en) | 2015-07-20 | 2015-07-20 | The fine granule material friction electrical selection method and device of lateral negative-pressure adsorption |
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| CN201510423931.7A CN104941812B (en) | 2015-07-20 | 2015-07-20 | The fine granule material friction electrical selection method and device of lateral negative-pressure adsorption |
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| CN104941812A true CN104941812A (en) | 2015-09-30 |
| CN104941812B CN104941812B (en) | 2017-03-29 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105903570A (en) * | 2016-05-20 | 2016-08-31 | 昆明理工大学 | Impact type friction electric separator |
| CN106000654A (en) * | 2016-05-23 | 2016-10-12 | 中国矿业大学 | Reverse-feed friction electric separation separating device for particles |
| CN106890729A (en) * | 2017-03-14 | 2017-06-27 | 昆明理工大学 | The friction charged method and device of one kind classification |
| CN107684978A (en) * | 2017-10-12 | 2018-02-13 | 宁波工程学院 | A kind of circulating frictional static dust arrester |
| CN108940599A (en) * | 2018-08-01 | 2018-12-07 | 中国矿业大学 | A kind of particle electrification separation system |
| CN109675743A (en) * | 2017-08-24 | 2019-04-26 | 太仓市众翔精密五金有限公司 | A kind of spray painting powder recovering device and its way of recycling |
| CN111420192A (en) * | 2020-04-09 | 2020-07-17 | 上海新黄河制药有限公司 | Inhalation device for in-situ preparation of negatively charged powder |
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| CN111420192A (en) * | 2020-04-09 | 2020-07-17 | 上海新黄河制药有限公司 | Inhalation device for in-situ preparation of negatively charged powder |
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| CN104941812B (en) | 2017-03-29 |
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