CN1304150C - Equipment and method for producing metal nanometer power by automatic control DC electric arc - Google Patents
Equipment and method for producing metal nanometer power by automatic control DC electric arc Download PDFInfo
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- CN1304150C CN1304150C CNB2004100211901A CN200410021190A CN1304150C CN 1304150 C CN1304150 C CN 1304150C CN B2004100211901 A CNB2004100211901 A CN B2004100211901A CN 200410021190 A CN200410021190 A CN 200410021190A CN 1304150 C CN1304150 C CN 1304150C
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Abstract
The present invention relates to a device and a method for producing metal nanometer power by automatically controlling a DC electric arc and belongs to the technical field for producing nanometer material. The device is characterized in that the device is a vacuum production device which automatically controls the three-dimension movement of a negative electrode and the one-dimension movement of a positive electrode of a DC electric arc; the stable continuous production of metal nanometer power is automatically controlled by the device; particle size classification of nanometer particles of different grades are realized; the device comprises a generating chamber, a classification chamber, a trapping chamber, a treatment chamber, etc.; metal nanometer power is automatically and continuously produced; the quality of the power is ensured; the uniform distribution of the classification particle diameter and the peer particle diameter of nanometer particles of different particle diameters is realized. The present invention has the advantages that the device is controlled in a programming mode; the device is driven in a hydraulic mode; the structure is novel, and the operation is simple and effective; the present invention realizes the automatic continuous stable scale production of metal nanometer power by automatically controlling and adjusting the arc starting and combustion process of an electric arc.
Description
Technical field
The invention belongs to the nano material preparation technical field.Be a kind of device of producing metal nano powder, particularly a kind of generation chamber of automatic continuous production metal nano powder, and the nano powder granularity grading room that designs for the quality that improves powder.
Background technology
Nano-powder material is meant the particle aggregate of particle diameter less than 100nm, it is a kind of novel high-tech material, have been widely used in fields such as electronics, machinery, Aero-Space, military affairs, chemical industry, metallurgy, medical treatment, as can be used for radar-wave absorbing stealth material, electrically-conducting paint, high-performance magnetism recording materials, high-temperature and wear-proof, metal lubrication renovation agent, low-temperature brazing filler metal, industrial catalyst, superconducting film material etc.
DC arc plasma is the preparation nano particle, a kind of effective thermal source of metal nanoparticle particularly, adopt the method tentatively to realize magnanimity production at present, but for realizing large-scale industrial production, also exist many technical problems, mainly show how to overcome present manually-operated, realize the automation of production process; In addition, how to realize the classification to the different-grain diameter nano particle, to improve the quality of nano-powder, content and added value develop skill.
Summary of the invention
The automatic control direct-current arc metal nano powder production equipment and the method that the purpose of this invention is to provide a kind of automation that can realize metal nano powder, continuous, stable large-scale production, the different-grain diameter nano particle is carried out classification, enlarges the nano-powder product category, improves the quality.
Technical solution of the present invention is, a kind of automatic control direct-current arc metal nano powder production equipment, comprise that powder generates chamber 1, powder granularity grading room 2, powder dust trapping chamber 3, powder handling chamber 4, pumped vacuum systems 5, gas circulator 6, and Hydraulic Power Transmission System 9, water-cooling system 10, programming Control system 11 constitute; Powder generates installs anode 8 and negative electrode 7 in the chamber 1, and passes powder and generate chamber 1 wall and be connected with the programming Control system with the external hydraulic transmission; Powder granularity grading room 2 is that double-walled water cooled housing and cooled with liquid nitrogen jar constitute; Hydraulic Power Transmission System 9 is made of hydraulic tank and the drive link that control cathode 3 dimensions move and anode 1 dimension moves; Programming Control system 11 is made of parts such as Programmable Logic Controller PLC, display, power regulators.
A kind of automatic control direct-current arc metal nano powder producing method is, pack into material in the anode and become the part of anode, gap with negative electrode formation 10～30mm, integral device vacuumizes, logical cooling water is with cooling electrode 7,8, each locular wall 1,2,3, vavuum pump 5, gas circulator 6 etc., the liquid nitrogen of packing in the cooled with liquid nitrogen jar of grading room; By 20～60% feeding active gases that account for system's air pressure, all the other are condensed gas, the rotation gas circulator; Start starting the arc device and power supply, form electric arc between the yin, yang electrode, the material start vaporizer also forms the nano-powder particle, and the arc burning process realizes monitoring, finishes the yin, yang Automatic control of electrode; The powder that forms moves with circulating current, and at water-cooled locular wall, cooled with liquid nitrogen jar surface deposition, floating particle is all collected in dust trapping chamber.At difference cooling position, obtain the nano-powder of different-grain diameter.
Active gases is a hydrogen.
Active gases is a hydrogen-containing gas, as: methane or ammonia.
Condensed gas is an inert gas, as: argon gas or helium.
The mobile employing hydraulic drive of negative electrode realizes the automatic control of negative electrode at the z axle by Programmable Logic Controller PLC, and the feedback signal of telecommunication is the voltage signal between cathode and anode, adjusts negative electrode and anode spacing with reference to this voltage signal, reaches the purpose of arc stability burning.Negative electrode is at x, and y axle mobile is by Hydraulic Power Transmission System independently, i.e. x, the axial hydraulic transmission of y are installed in independently on the guide rail, and by to x, the imaging of negative electrode is observed on the y direction of principal axis, adopts manual control mode to realize negative electrode at x, the moving of y axle.3 dimensions at electric arc place, negative electrode tip move, and are by the 3 dimension hydraulic drives of above-mentioned negative electrode top, are that the leverage of fulcrum realizes by generating locular wall.
Also moving of anode charge bar realized by PLC control, hydraulic drive.Feedback signal is from the voltage signal between cathode and anode, adjusts starting, the feed rate that the negative electrode charge bar moves thus and stops, and reaches the purpose of automatic control.
The powder granularity grading room is installed in the circulating current loop.Circulating current is in order to realize the continuous production of nano powder, be transferred to collection, processing and the packing that dust trapping chamber carries out powder with generating the powder of producing in the chamber by air-flow that this air-flow circulation power is to be produced by circulating fan, will run through whole powder manufacturing apparatus.Cooled with liquid nitrogen method powder granularity grading room is installed in the gas return path that generates between chamber and the dust trapping chamber.
Single jar of cooled with liquid nitrogen that grading room is rotated by inner adjustable speed or multiple tank, double-deck water-cooled locular wall, powder gathering-device etc. constitute.Circulating current carries the nano particle of producing in the generation chamber and enters grading room, because the sub-cooled effect of cooled with liquid nitrogen jar, further growing up of nano-particles size will be suppressed, cause fine grained in the nano particle to be deposited on the surface of cooling tank, to deposit part medium size particle on the double-deck water-cooled inwall of grading room, the bulky grain particle will be transferred in the dust trapping chamber of back with circulating current and collect.Realize the classification of nano particle yardstick by said process.
Advantage of the present invention and the beneficial effect that is reached are, novel structure, realize the automation size production of metal nano powder, overcome the production process that manually-operated brings and the destabilizing factor of powder quality, improved production efficiency, and realize the classification of nano-powder different stage granularity, thus further improve the quality of powder, realize high technology content and high added value.
Description of drawings
Fig. 1 is generation of the present invention chamber and the connection diagram of grading room in entire equipment.
Fig. 2 is a generation cell structure sketch of the present invention.
Fig. 3 is that negative electrode 3 dimensions of the present invention move control hydraulic drive schematic diagram automatically.
Fig. 4 is a cooled with liquid nitrogen method powder granularity grading room structure diagram of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
A kind of automatic control direct-current arc metal nano powder production equipment, comprise that powder generates chamber 1, powder granularity grading room 2, powder dust trapping chamber 3, powder handling chamber 4, pumped vacuum systems 5, gas circulator 6, and Hydraulic Power Transmission System 9, water-cooling system 10, programming Control system 11 constitute; Powder generates installs anode 8 and negative electrode 7 in the chamber 1, and passes powder and generate chamber 1 wall and be connected with the programming Control system with the external hydraulic transmission; Powder granularity grading room 2 is that double-walled water cooled housing and cooled with liquid nitrogen jar constitute; Hydraulic Power Transmission System 9 is made of hydraulic tank and the drive link that control cathode 3 dimensions move and anode 1 dimension moves; Programming Control system 11 is made of parts such as Programmable Logic Controller PLC, display, power regulators.
A kind of automatic control direct-current arc metal nano powder producing method is, pack into material in the anode and become the part of anode, gap with negative electrode formation 20mm, integral device vacuumizes, logical cooling water is with cooling electrode 7,8, each locular wall 1,2,3, vavuum pump 5, gas circulator 6 etc., the liquid nitrogen of packing in the cooled with liquid nitrogen jar of grading room; By the 40% feeding hydrogen that accounts for system's air pressure, all the other are inert gas, the rotation gas circulator; Start starting the arc device and power supply, form electric arc between the yin, yang electrode, the material start vaporizer also forms the nano-powder particle, and the arc burning process realizes monitoring, finishes the yin, yang Automatic control of electrode; The powder that forms moves with circulating current, and at water-cooled locular wall, cooled with liquid nitrogen jar surface deposition, floating particle is all collected in dust trapping chamber.At difference cooling position, obtain the nano-powder of different-grain diameter.
Claims (5)
1. control direct-current arc metal nano powder production equipment automatically for one kind, it is characterized in that, comprise that powder generates chamber (1), powder granularity grading room (2), powder dust trapping chamber (3), powder handling chamber (4), pumped vacuum systems (5), gas circulator (6), and Hydraulic Power Transmission System (9), water-cooling system (10), programming Control system (11) constitute; Powder generates installs anode (8) and negative electrode (7) in the chamber (1), and passes powder generation chamber (1) wall and be connected with the programming Control system with the external hydraulic transmission; Powder granularity grading room (2) is that double-walled water cooled housing and cooled with liquid nitrogen jar constitute; Hydraulic Power Transmission System (9) is made of hydraulic tank and the drive link that control cathode (7) 3 dimensions move and anode (8) 1 dimensions move.
2. use the method for the described device fabrication metal nano powder of claim 1, it is characterized in that, pack into material in the anode and become the part of anode, gap with negative electrode formation 10～30mm, integral device vacuumizes, logical cooling water is with cooling electrode (7,8), each locular wall (1,2,3), vavuum pump (5), gas circulator (6), the liquid nitrogen of packing in the cooled with liquid nitrogen jar of grading room; By 20～60% feeding active gases that account for system's air pressure, all the other are condensed gas, the rotation gas circulator; Start starting the arc device and power supply, form electric arc between the yin, yang electrode, the material start vaporizer also forms the nano-powder particle, and the arc burning process realizes monitoring, finishes the yin, yang Automatic control of electrode; The powder that forms moves with circulating current, and at water-cooled locular wall, cooled with liquid nitrogen jar surface deposition, floating particle is all collected in dust trapping chamber; At difference cooling position, obtain the nano-powder of different-grain diameter.
3. method according to claim 2 is characterized in that active gases is a hydrogen.
4. method according to claim 2 is characterized in that active gases is a hydrogen-containing gas.
5. method according to claim 2 is characterized in that condensed gas is an inert gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100211901A CN1304150C (en) | 2004-02-23 | 2004-02-23 | Equipment and method for producing metal nanometer power by automatic control DC electric arc |
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| CNB2004100211901A CN1304150C (en) | 2004-02-23 | 2004-02-23 | Equipment and method for producing metal nanometer power by automatic control DC electric arc |
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| CN1559729A CN1559729A (en) | 2005-01-05 |
| CN1304150C true CN1304150C (en) | 2007-03-14 |
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| CNB2004100211901A Expired - Fee Related CN1304150C (en) | 2004-02-23 | 2004-02-23 | Equipment and method for producing metal nanometer power by automatic control DC electric arc |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100457339C (en) * | 2006-11-09 | 2009-02-04 | 昆山密友实业有限公司 | Continuous production apparatus for nano metal powder |
| CN101503792B (en) * | 2009-03-13 | 2010-08-25 | 厦门大学 | Size controllable metal and alloy nanoparticle gas-phase synthesizing method and apparatus |
| CN103157802B (en) * | 2011-12-09 | 2015-04-15 | 沈阳工业大学 | Equipment and method for rapid-situ-packaging rare earth nanometer powder arc process preparation |
| CN102689903B (en) * | 2012-03-27 | 2014-02-05 | 大连理工大学 | Method for preparing silicon carbide nanometer particle and composite material thereof by evaporating solid raw materials |
| CN103523785A (en) * | 2013-10-17 | 2014-01-22 | 大连理工大学 | Preparation method of silicon and silicon doped nanosheet |
| CN103962566B (en) * | 2014-05-05 | 2016-03-02 | 大连理工大学 | A kind of multi-source direct-current arc automation nano-powder production system and method |
| CN106670488A (en) * | 2016-12-27 | 2017-05-17 | 深圳微纳增材技术有限公司 | Preparation device and method for high-activity metal powder |
| CN107180944A (en) * | 2017-06-20 | 2017-09-19 | 大连理工常州研究院有限公司 | A kind of preparation method and applications of metal phosphide nano-particle |
| CN109279599A (en) * | 2018-12-14 | 2019-01-29 | 武汉普迪真空科技有限公司 | A kind of continous way graphene powder preparation method and its equipment |
| CN109719393A (en) * | 2019-01-25 | 2019-05-07 | 大连理工大学 | The continuous producing method of hot arc and laser composite heat power supply metal compound nano body |
| CN110405221A (en) * | 2019-08-19 | 2019-11-05 | 昆明理工大学 | A kind of method that DC arc plasma prepares refractory metal nano powder |
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| CN2200505Y (en) * | 1994-08-29 | 1995-06-14 | 青岛化工学院 | Processing device of high melting-point "Nami" metal caltalyst |
| US5460701A (en) * | 1993-07-27 | 1995-10-24 | Nanophase Technologies Corporation | Method of making nanostructured materials |
| CN1381327A (en) * | 2002-02-22 | 2002-11-27 | 孙立言 | Equipment with separation and collection structure for continuously preparing nano material |
| CN1385268A (en) * | 2002-03-20 | 2002-12-18 | 太原理工大学 | Device and technology for preparing carbon and metal nano particle material |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5460701A (en) * | 1993-07-27 | 1995-10-24 | Nanophase Technologies Corporation | Method of making nanostructured materials |
| CN2200505Y (en) * | 1994-08-29 | 1995-06-14 | 青岛化工学院 | Processing device of high melting-point "Nami" metal caltalyst |
| CN1381327A (en) * | 2002-02-22 | 2002-11-27 | 孙立言 | Equipment with separation and collection structure for continuously preparing nano material |
| CN1385268A (en) * | 2002-03-20 | 2002-12-18 | 太原理工大学 | Device and technology for preparing carbon and metal nano particle material |
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