CN118060549B - Continuous nanometer magnesium powder preparation equipment - Google Patents
Continuous nanometer magnesium powder preparation equipment Download PDFInfo
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- CN118060549B CN118060549B CN202410461009.6A CN202410461009A CN118060549B CN 118060549 B CN118060549 B CN 118060549B CN 202410461009 A CN202410461009 A CN 202410461009A CN 118060549 B CN118060549 B CN 118060549B
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- magnesium powder
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- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 54
- 239000011777 magnesium Substances 0.000 claims abstract description 54
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims description 22
- 238000007664 blowing Methods 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 15
- XKRFYHLGVUSROY-UHFFFAOYSA-N argon Substances [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 229910052786 argon Inorganic materials 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 36
- 238000001704 evaporation Methods 0.000 abstract description 11
- 230000008020 evaporation Effects 0.000 abstract description 11
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000001257 hydrogen Substances 0.000 description 8
- 229910052739 hydrogen Inorganic materials 0.000 description 8
- 238000003860 storage Methods 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000010891 electric arc Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- -1 magnesium nitride Chemical class 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention discloses continuous nanometer magnesium powder preparation equipment, which relates to the technical field of metal raw material preparation and comprises a host machine and an auxiliary system, wherein the host machine is connected with the auxiliary system through a gas pipe and a cable assembly; the main machine comprises a main engine room, wherein a main working structure is arranged in the main engine room, the main working structure comprises a wire feeding mechanism, an anode conductive structure and a cathode conductive structure, and magnesium wires are continuously conveyed between the anode conductive structure and the cathode conductive structure through the wire feeding mechanism; the auxiliary system comprises an arc starting power supply configurator, the arc starting power supply configurator is connected with a main working structure through a cable assembly, potential difference is generated between the positive electrode and the negative electrode of the main working structure, magnesium wires are processed into nano magnesium powder, in the equipment, when the magnesium wires are close to the set distance of the negative plate, the arc starting is carried out automatically, the arc starting is automatically stopped after the preset time is reached or enough distance materials are evaporated, the negative plate is made of pure magnesium, partial evaporation is generated due to arc heating, only magnesium powder is produced, and the purity of a product is not affected.
Description
Technical Field
The invention relates to the technical field of metal raw material preparation, in particular to continuous nano magnesium powder preparation equipment.
Background
In the traditional equipment for preparing magnesium powder by evaporation, the prepared particles mainly have the diameter of 20-30 mu m, and a small amount of nanoscale particles less than or equal to 1 mu m are distributed in a visible material under SEM, but are difficult to separate and take in actual production.
The particle diameter of the prepared magnesium powder preparation equipment is less than or equal to 0.3 mu m, but the magnesium ingot placed on a cathode plate needs to be manually operated by an anode gun, on one hand, a person needs to observe a high-brightness arc for a long time, an arcing state is ensured, high requirements are provided for the operator, the operator has a certain influence on vision, and if the operation is wrong, the top end of the anode gun can be adhered to a molten magnesium material, the equipment needs to be disassembled for cleaning, and continuous production is difficult, on the other hand, if the copper substrate is directly heated by the arc, the copper substrate can be partially evaporated into powder, magnesium powder is mixed to cause product pollution, and single-time fillable materials are less (the magnesium material needs to be smaller than the copper substrate, generally 100-150g cubes), on the one hand, the production is slow, a cavity can be rapidly filled by the magnesium powder which flies after arcing, the operation cannot be continued after the sight is hindered, and sedimentation needs to be waited.
Disclosure of Invention
In order to solve the technical problems, the invention provides continuous nano magnesium powder preparation equipment which comprises a host machine and an auxiliary system, wherein the host machine is connected with the auxiliary system through a gas pipe and a cable assembly;
The main machine comprises a main engine room, wherein a main working structure is arranged in the main engine room, the main working structure comprises a wire feeding mechanism, an anode conductive structure and a cathode conductive structure, magnesium wires are continuously conveyed between the anode conductive structure and the cathode conductive structure through the wire feeding mechanism, the anode conductive structure comprises an anode conductive plate, the cathode conductive structure comprises a cathode plate, and the cathode plate is made of pure magnesium;
the auxiliary system comprises an arcing power supply configurator, wherein the arcing power supply configurator is connected with the main working structure through a cable assembly, and generates potential difference between the positive electrode and the negative electrode of the main working structure to process magnesium wires into nano magnesium powder;
The auxiliary system further comprises an air source, an air outlet of the air source is connected with an air pipe, the air pipe is connected with the inlet end of the pulse air valve, an outlet of the pulse air valve is connected with a pulse blowing pipe through a flange, the pulse blowing pipe extends into the main engine cabin, and the air source is used for conveying hydrogen-argon mixed gas into the main engine cabin.
Preferably: the main engine further comprises a top cover, an auxiliary engine room and a bottom cover, and the top cover, the main engine room, the auxiliary engine room and the bottom cover are connected through flanges.
Preferably: the auxiliary system further comprises an electric control box, an auxiliary device bracket and a vacuum pump, wherein the auxiliary device bracket is arranged on the electric control box.
Preferably: the vacuum pump is connected with a vacuum tube, a filter is arranged at the inlet of the vacuum pump, the other end of the vacuum tube is connected with an inner tube of a spiral separator, and the spiral separator is arranged on the top sealing cover.
Preferably: the top sealing cover and the main engine room are separated into two working areas by a first partition plate and a second partition plate, the working areas are a first working area and a second working area, the first working area is communicated with the main operation door, and the second working area is communicated with the observation window, the operation glove flange and the spiral separator.
Preferably: and a collecting port is formed in the bottom plate of the main engine room at the second working interval and is connected with a collecting bottle for collecting magnesium powder.
Preferably: the inner wall of the main cabin, which is positioned in the second working area, is provided with a pulse air blowing port, a flange is welded at the pulse air blowing port, and the pulse air blowing port is connected with a pulse blowing pipe through the flange.
Preferably: the wire feeding mechanism comprises a motor and a transmission mechanism, wherein the motor drives the insulating driving wheel and the insulating driven wheel to rotate through the transmission mechanism, and the insulating driving wheel and the insulating driven wheel are used for pushing magnesium wires to move.
Preferably: the positive electrode conductive structure comprises a positive electrode insulating support and a pressing wheel set, and the pressing wheel set tightly presses the magnesium wire to be conducted with the positive electrode conductive plate under the action of gravity.
Preferably: the negative electrode conductive structure comprises a negative electrode insulating bracket for mounting a negative electrode plate.
The invention has the technical effects and advantages that:
1. The device adopts the hydrogen priority effect to form evaporation, the wire material is used as one end electrode, the temperature of the tip end rises to the evaporation temperature rapidly after arcing, the tip end of the wire material evaporates rapidly, heat is taken away by utilizing the evaporation heat absorption of the wire material, hydrogen and argon mixed gas is introduced into the vacuum environment, argon is used as shielding gas, hydrogen is subjected to arc aggregation and provides conditions for the hydrogen priority effect, the heat is provided by utilizing the electric arc to prepare magnesium powder, and the wire material does not need to add a large amount of extra crushing gas to a working area in the working process, the working area can be of a high sealing structure, oxygen, nitrogen, water vapor and the like in a reaction area can be effectively removed, and the recovery of the mixed gas can be realized.
2. The equipment adopts the wire feeding mechanism to continuously convey magnesium wires to prepare nano magnesium powder, an operator only needs to collect powder in the main engine cabin after the preparation is finished, electric arcs or operation equipment are not required to be observed for a long time, the influence on the vision of the operator is avoided, and continuous production can be realized.
3. The equipment adopts magnesium wires as an arcing positive electrode conductor, when the magnesium wires are close to the set distance of the negative plate, the arcing is automatically started, when the preset time is reached or the materials with sufficient distance are evaporated, the equipment automatically stops, the negative plate is made of pure magnesium, and partial evaporation is generated due to the heating of the electric arc, so that only magnesium powder is produced, and the purity of the product is not influenced.
4. In this equipment, wire feeding mechanism and anodal conductive structure are located first work interval, and negative pole conductive structure is located second work interval, separates anodal conductive structure and negative pole conductive structure through the second baffle, and the magnesium powder of the production department in second work interval gets into from collecting the mouth and gathers materials the bottle and collect to the magnesium powder can not get into first work interval in, avoids causing the pollution to first work interval.
Drawings
FIG. 1 is a schematic structural diagram of continuous nano magnesium powder preparation equipment provided by the embodiment of the application;
FIG. 2 is a rear view of a continuous nano-magnesium powder preparing apparatus according to an embodiment of the present application;
FIG. 3 is an exploded view of an auxiliary system in a continuous nano-magnesium powder production apparatus according to an embodiment of the present application;
FIG. 4 is an exploded view of a host computer in a continuous nano-magnesium powder production apparatus according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a top cover in a continuous nano-magnesium powder preparation apparatus according to an embodiment of the present application;
FIG. 6 is a schematic structural view of a main cabin in a continuous nano magnesium powder preparation apparatus according to an embodiment of the present application;
FIG. 7 is an enlarged schematic view of the structure at A in FIG. 6 in a continuous nano-magnesium powder preparing apparatus according to an embodiment of the present application;
fig. 8 is a top view of a main cabin in a continuous nano magnesium powder preparation apparatus according to an embodiment of the present application.
In the figure: 1. a host; 11. a top cover; 111. a spiral separator; 112. a first separator; 12. a main cabin; 121. a main operation door; 122. an observation window; 123. operating a glove flange; 124. collecting material bottles; 1241. a collecting butterfly valve; 125. a second separator; 126. a main cabin bottom plate; 1261. a collection port; 127. a pulse air blowing port; 13. an auxiliary nacelle; 131. an auxiliary operation door; 14. a bottom cover; 141. temporary storage supports; 142. temporary storage bottles; 2. an auxiliary system; 21. an electrical control box; 22. an auxiliary device holder; 23. a vacuum pump; 231. a vacuum tube; 24. a gas source; 241. an air pipe; 25. a pulse air valve; 251. a pulse blow tube; 26. an arcing power source configurator; 3. a cable assembly; 31. a negative electrode cable; 32. a positive electrode cable; 4. a main working structure; 41. a wire feeding mechanism; 411. a motor; 412. a transmission mechanism; 413. a wire rod; 414. an insulating driving wheel; 415. insulating driven wheels; 416. a tray rotating shaft; 417. a material tray; 4171. magnesium wire; 418. an insulating guide plate; 42. an anode conductive structure; 421. an anode insulating support; 4211. a groove structure; 4212. a U-shaped groove; 422. a positive electrode conductive plate; 423. a pressing wheel group; 4231. a pinch roller rotating shaft; 43. a negative electrode conductive structure; 431. a negative electrode insulating support; 432. a negative plate.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description. The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Referring to fig. 1 to 3, in this embodiment, a continuous nano magnesium powder preparation apparatus is provided, including a main machine 1 and an auxiliary system 2, where the main machine 1 and the auxiliary system 2 are connected by a gas pipe and a cable assembly 3, the cable assembly 3 includes a negative cable 31 and a positive cable 32, the main machine 1 includes a top cover 11, a main machine cabin 12, an auxiliary machine cabin 13 and a bottom cover 14, the top cover 11 is connected with the main machine cabin 12 by a flange, the main machine cabin 12 is connected with the auxiliary machine cabin 13 by a flange, the auxiliary machine cabin 13 is connected with the bottom cover 14 by a flange, and the top cover 11, the main machine cabin 12, the auxiliary machine cabin 13 and the bottom cover 14 are connected by a flange, so that the main machine 1 is convenient to transport, install and detach, and maintenance of the main machine 1 and internal equipment is convenient.
The auxiliary system 2 comprises an electric control box 21, an auxiliary device support 22, a vacuum pump 23, an air source 24, a pulse air valve 25 and an arc starting power supply configurator 26, wherein the auxiliary device support 22 and the air source 24 are arranged on the electric control box 21, an air outlet of the air source 24 is connected with an air pipe 241, the air pipe 241 is connected with an inlet end of the pulse air valve 25, an outlet of the pulse air valve 25 is connected with a pulse blowing pipe 251 through a flange, the pulse blowing pipe 251 extends into the main cabin 12, the air source 24 is used for conveying hydrogen-argon mixed gas into the main cabin 12, and the vacuum pump 23 and the arc starting power supply configurator 26 are arranged on the auxiliary device support 22.
In the present embodiment, the vacuum pump 23 is connected to the vacuum pipe 231, and a filter is provided at the inlet of the vacuum pump 23, the other end of the vacuum pipe 231 is connected to the inner pipe of the spiral separator 111, and the spiral separator 111 is provided on the top cover 11.
Specifically, before the preparation, the vacuum pump 23 is started to vacuumize the main cabin 12, and during the preparation, the redundant gas in the main machine 1 passes through the spiral separator 111 and the vacuum tube 231, and the outlet of the vacuum pump 23 is connected with the gas collecting device, so that the hydrogen-argon mixed gas can be recovered.
In the present embodiment, the negative output of the arcing power source configurator 26 is connected to the negative cable 31, the positive output of the arcing power source configurator 26 is connected to the positive cable 32, and the negative cable 31 and the positive cable 32 are connected to the main working structure 4 inside the host 1.
Referring to fig. 4, a temporary storage bracket 141 is arranged in the bottom sealing cover 14, a plurality of temporary storage bottles 142 are arranged on the temporary storage bracket 141, each temporary storage bottle 142 is connected with a butterfly valve, a material bottle operating rod is arranged on the butterfly valve, and the butterfly valve is opened and closed through the material bottle operating rod;
the auxiliary cabin 13 is of a hollow columnar structure, an auxiliary operation door 131 is arranged on the outer wall of the auxiliary cabin 13, an operation glove flange 123 is arranged on the auxiliary operation door 131, and the operation glove flange 123 is used for installing operation gloves.
Referring to fig. 5, the top cover 11 is provided with an opening corresponding to the spiral separator 111, so that gas in the top cover 11 can enter the spiral separator 111, a first separator 112 is welded inside the top cover 11 along the axial direction, the first separator 112 is located at one side of the opening, and a groove structure 4211 is provided at the bottom of the first separator 112.
Referring to fig. 1, 3, 5 and 6, the main cabin 12 is a hollow column structure, a main operation door 121, an observation window 122 and an operation glove flange 123 are provided at the outer edge of the main cabin 12, the main operation door 121 includes a door frame and a door, the door frame is welded on the outer wall of the main cabin 12, the door is mounted on the door frame through a hinge, a main cabin bottom plate 126 is provided at the bottom of the main cabin 12, the main cabin 12 is separated from the auxiliary cabin 13 by the main cabin bottom plate 126, a second partition 125 is welded at the middle of the main cabin 12, the main cabin bottom plate 126 is welded at the bottom end of the second partition 125, the upper end of the second partition 125 is inserted into a groove structure 4211 of the first partition 112, and the top cover 11 and the main cabin 12 are separated into two working areas by the first partition 112 and the second partition 125.
For convenience of understanding, the two working sections are defined as a first working section and a second working section, respectively, the first working section is communicated with the main operation door 121, and the second working section is communicated with the observation window 122, the operation glove flange 123 and the spiral separator 111, and the operation glove flange 123 is used for installing the operation glove.
Further, collecting port 1261 has been seted up to main cabin bottom plate 126 that is located second work interval department, main cabin bottom plate 126 is located collecting port 1261 lower extreme welding has collecting port flange, collecting port flange joint collects dish valve 1241, be provided with the collecting valve action bars on the collecting dish valve 1241, collect dish valve 1241 and receive the bottle 124 that gathers materials through swift flange connection, collect the bottle 124 and take the dish valve from taking the dish valve, can realize opening and closing of dish valve through the bottle valve action bars, when the bottle 124 is received in needs change, the staff opens the collecting dish valve 1241 through the operation gloves of auxiliary operation door 131 department, take off the collecting bottle 124 and close and receive the bottle 124 that gathers materials, be connected empty temporary storage bottle 142 and collect dish valve 1241 again, collect the magnesium powder again.
Further, a pulse air blowing port 127 is arranged on the inner wall of the main engine room 12 in the second working space, a flange is welded at the pulse air blowing port 127, and the pulse air blowing port 127 is connected with a pulse air blowing pipe 251 through the flange.
Further, the main cabin 12 is internally provided with a main working structure 4, the main working structure 4 comprises a wire feeding mechanism 41, an anode conductive structure 42 and a cathode conductive structure 43, the wire feeding mechanism 41 and the anode conductive structure 42 are located in a first working interval, the cathode conductive structure 43 is located in a second working interval, the anode conductive structure 42 and the cathode conductive structure 43 are separated by a second separator 125, magnesium powder at the production place of the second working interval enters a collecting bottle 124 from a collecting port 1261 to be collected, and the magnesium powder cannot enter the first working interval to avoid polluting the first working interval.
Referring to fig. 3, 4, 6 and 8, the wire feeding mechanism 41 includes a motor 411 and a transmission mechanism 412, the motor 411 is fixed at the lower end of the main cabin bottom plate 126, the transmission mechanism 412 is fixed at the upper end of the main cabin bottom plate 126, the motor 411 drives the insulation driving wheel 414 and the insulation driven wheel 415 to rotate through the transmission mechanism 412, a gap for passing through the magnesium wire 4171 is formed between the insulation driving wheel 414 and the insulation driven wheel 415, the outer walls of the insulation driving wheel 414 and the insulation driven wheel 415 are respectively provided with a bulge extending along the radial direction, the rotation directions of the insulation driving wheel 414 and the insulation driven wheel 415 are opposite, the insulation driving wheel 414 and the insulation driven wheel 415 are used for pushing the magnesium wire 4171 to move, a wire rod 413 is fixed on the side wall of the transmission mechanism 412, a wire groove is formed in the wire rod 413, the wire rod 413 is used for limiting the movement of the magnesium wire 4171 in the radial direction, the wire rod is positioned at one side of the transmission mechanism 412 to be provided with a material disc rotating shaft 416, the material disc rotating shaft 416 is fixed on the main cabin bottom plate 126, the bottom end of the material disc 416 is connected with the base of the material disc 417, the material disc 417 is rotatably connected with the material disc 416 through a bearing, and the material disc rotating shaft 416 is used for placing the material disc 41417, and the material disc 417 is used for wrapping the magnesium wire 417.
In one embodiment, the transmission mechanism 412 includes a support and two transmission shafts, the two transmission shafts are both rotatably connected to the support, the support is fixed to the upper end of the motherboard 126, one transmission shaft is connected to the motor 411 and the insulating driving wheel 414, the other transmission shaft is connected to the insulating driven wheel 415, when the motor 411 drives the insulating driving wheel 414 to rotate, the insulating driving wheel 414 and the insulating driven wheel 415 mutually act to squeeze the magnesium wire 4171, the rotation directions of the insulating driving wheel 414 and the insulating driven wheel 415 are opposite, and under the action of friction force, the magnesium wire 4171 is pushed by engagement.
Further, the wire feeding mechanism 41 further includes an insulation guide plate 418, the insulation guide plate 418 is mounted on the second partition plate 125, the insulation guide plate 418 penetrates through the second partition plate 125, a through hole for passing through the magnesium wire 4171 is formed in the middle of the insulation guide plate 418, the magnesium wire 4171 enters the second working space from the first working space through the through hole of the insulation guide plate 418, and extends to the outer side of the insulation guide plate 418, and the magnesium wire 4171 is insulated from the second partition plate 125 through the insulation guide plate 418.
The equipment adopts the wire feeding mechanism 41 to continuously convey the magnesium wires 4171 to prepare the nano magnesium powder, an operator only needs to collect powder in the main engine room 12 after the preparation is finished, and does not need to observe electric arcs or operation equipment for a long time, so that the influence on the vision of the operator is avoided.
Referring to fig. 6-8, the positive electrode conductive structure 42 includes a positive electrode insulating support 421, a positive electrode conductive plate 422 and a pressing wheel set 423, the positive electrode conductive plate 422 is made of red copper, the positive electrode insulating support 421 is fixed on the bottom plate 126 of the main cabin, a mounting groove is formed at the top end of the positive electrode insulating support 421, the positive electrode conductive plate 422 is mounted in the mounting groove, the positive electrode conductive plate 422 is connected with the positive electrode cable 32, a groove structure 4211 is formed at the upper end surface of the positive electrode conductive plate 422, when the magnesium wire 4171 is conveyed, the magnesium wire 4171 is located in the groove structure 4211, a pressing wheel set 423 is further arranged above the positive electrode conductive plate 422, the pressing wheel set 423 includes a plurality of pressing wheels, each pressing wheel is connected with a pressing wheel rotating shaft 4231, a U-shaped groove 4212 is formed in the positive electrode insulating support 421 corresponding to the rotating shaft, the pressing wheel rotating shaft 4231 can move up and down along the U-shaped groove 4212, the pressing wheel compresses the magnesium wire 4171 under the gravity effect, so that the magnesium wire 4171 is stabilized in the groove structure 4211, and the magnesium wire 4171 is conducted with the positive electrode conductive plate 422.
Further, the negative electrode conductive structure 43 includes a negative electrode insulating bracket 431 and a negative electrode plate 432, the negative electrode plate 432 is made of pure magnesium, the negative electrode insulating bracket 431 is fixed on the main cabin bottom plate 126, the negative electrode plate 432 is mounted on the negative electrode insulating bracket 431, the negative electrode plate 432 is connected with the negative electrode cable 31, the negative electrode plate 432 is inclined, and an arc triggering area is formed between the negative electrode plate 432 and the magnesium wire 4171.
Compared with the prior art, the device adopts the magnesium wire 4171 as an arcing positive electrode conductor, when the magnesium wire 4171 is close to the set distance of the negative plate 432, the arcing is automatically started, when the preset time is reached or the material with sufficient distance is evaporated, the negative plate 432 is made of pure magnesium, partial evaporation is generated due to arc heating, only magnesium powder is produced, and the purity of the product is not affected.
In the prior art, wires are also adopted as raw materials, an air atomization process and a liquid nitrogen condensation mode are adopted, arc heat is utilized to heat the wires until the wires melt, exogenous protective gas is accessed, the high-speed air flow is used for blowing molten drops to fall into a liquid nitrogen layer and then is condensed into liquid, but the air atomization process can lead one side of the molten drops to form a compact layer, when the method is applied to magnesium powder production, a cooling medium of the method can react with magnesium, and the extremely rapid cooling can further lead to the generation of the compact layer on the surface of particles, so that the reactivity of the magnesium in the subsequent process is seriously influenced.
Compared with the prior art, the invention has the advantages that the hydrogen priority effect is utilized to promote evaporation, the wire material is taken as one end electrode, the temperature of the tip end rises to the evaporation temperature rapidly after arcing, the tip end of the wire material evaporates rapidly, the heat is taken away by utilizing the heat absorption of the evaporation, the arc is automatically broken due to the evaporation of the tip end material, and the wire material is prevented from overheating.
The electric arc is utilized to provide heat, so that magnesium powder is prepared, and in the working process, a large amount of additional crushing gas is not required to be added into a working area, the working area can be of a high sealing structure, vacuum replacement can be carried out, oxygen, nitrogen, water vapor and the like in a reaction area can be effectively removed, the impurity content (magnesium nitride, magnesium oxide and magnesium hydroxide) of products is reduced, and the recovery of mixed gas can be realized.
The specific operation steps of the equipment are as follows:
1. Opening the main operation door 121 to mount the tray 417 at the tray spindle 416, wherein the radial translational degree of freedom of the tray 417 is limited by the tray spindle 416 and the radial degree of freedom is limited by the weight and the base of the tray 417;
2. Magnesium wires 4171 are led out of the material disc 417, guided by the wire rod 413, pass through the gap between the insulation driving wheel 414 and the insulation driven wheel 415, pass through the groove structure 4211 of the positive electrode conductive plate 422 and the pinch roller group 423, and then pass through the through hole of the insulation guide plate 418;
3. closing the main operation door 121 and sealing, checking other external interfaces, checking that the operation glove is in a closed state, controlling the pneumatic equipment through an electric appliance, and starting an automatic workflow of the equipment;
4. the vacuum pump 23 pumps the pressure in the machine to-101 kPa, and then mixed gas of hydrogen and argon is injected, wherein the ratio of the hydrogen to the argon is 2:8, repeating the process twice, and finally converting the equipment into a hydrogen argon atmosphere environment of-80 kPa;
5. After ventilation is completed, the arcing power source configurator 26 starts to work, the positive electrode output is connected with the positive electrode cable 32, the positive electrode cable 32 passes through the flange to be connected with the positive electrode conducting plate 422, the negative electrode output is connected with the negative electrode cable 31, the negative electrode cable 31 passes through the flange to be connected with the negative electrode plate 432, and potential difference is generated between the positive electrode and the negative electrode;
6. The motor 411 is operated, the insulated driving wheel 414 and the insulated driven wheel 415 are rotated, the magnesium wire 4171 is pushed by occlusion, the positive charge is received through the positive electrode conductive plate 422, the positive charge gradually approaches the negative electrode plate 432, the arc is started after a certain distance is reached,
The arc voltage formula u=k×i×l, U is basically unchanged by the power supply configurator, L is reduced to arcing after arcing;
7. the arc rapidly heats the materials at both ends, and the temperature of the negative plate 432 is raised slowly due to the large cross section and large total mass of the negative plate compared with the wire; the section of the magnesium wire 4171 is smaller, the total substances are less, the temperature is quickly increased, the magnesium wire 4171 is evaporated into magnesium vapor, the magnesium vapor is desuperheated and sublimated into nano magnesium particles in the protective atmosphere, and meanwhile, as part of the magnesium wire 4171 material is evaporated, L is increased, and the arc is broken;
8. in order to slow down the consumption speed of the negative electrode, a certain amount of argon is injected from a pulse gas blowing hole to cool, and part of magnesium particles adhered to the negative electrode plate 432 are taken away, and redundant gas is automatically pumped out after being filtered by a filter through the spiral separator 111;
9. repeating the steps 6-8 until reaching the preset feeding amount or stopping manually, switching off the power supply, and distributing the gas to normal pressure;
10. Step 7, finishing the automatic process, brushing the powder adhered in the main cabin 12 through the cylinder wall by using the operation glove, observing the help operation through the observation window 122, pulling the operation rod of the collecting dish valve 1241 by using the operation glove, pulling the valve operation rod of the collecting bottle 124, and sweeping the material into the collecting bottle 124;
11. after filling, the collecting butterfly valve 1241 and the butterfly valve of the collecting bottle 124 are closed, and the temporary storage bottle 142 is replaced;
12. repeating the steps 10-11 to finish all the collection.
13. The auxiliary operation door 131 is opened to finish the material production.
It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present invention without the inventive step, are intended to be within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (10)
1. The continuous nano magnesium powder preparation equipment is characterized by comprising a host machine and an auxiliary system, wherein the host machine and the auxiliary system are connected through a gas pipe and a cable assembly;
The main machine comprises a main engine room, wherein a main working structure is arranged in the main engine room, the main working structure comprises a wire feeding mechanism, an anode conductive structure and a cathode conductive structure, magnesium wires are continuously conveyed between the anode conductive structure and the cathode conductive structure through the wire feeding mechanism, the anode conductive structure comprises an anode conductive plate, the cathode conductive structure comprises a cathode plate, and the cathode plate is made of pure magnesium;
the host machine further comprises a top sealing cover, the top sealing cover and the host cabin are divided into two working areas by a first partition board and a second partition board, the first working area and the second working area are formed, the wire feeding mechanism and the positive electrode conductive structure are located in the first working area, the negative electrode conductive structure is located in the second working area, and magnesium powder produced in the second working area cannot enter the first working area;
the auxiliary system comprises an arcing power supply configurator, wherein the arcing power supply configurator is connected with the main working structure through a cable assembly, and generates potential difference between the positive electrode and the negative electrode of the main working structure to process magnesium wires into nano magnesium powder;
The auxiliary system further comprises an air source, an air outlet of the air source is connected with an air pipe, the air pipe is connected with the inlet end of the pulse air valve, an outlet of the pulse air valve is connected with a pulse blowing pipe through a flange, the pulse blowing pipe extends into the main engine cabin, and the air source is used for conveying hydrogen-argon mixed gas into the main engine cabin.
2. The continuous nano-magnesium powder preparing apparatus according to claim 1, wherein the main machine further comprises an auxiliary cabin and a bottom cover, and the top cover, the main cabin, the auxiliary cabin and the bottom cover are connected by flanges.
3. The continuous nano-magnesium powder preparing apparatus according to claim 1, wherein the auxiliary system further comprises an electrical control box, an auxiliary device bracket and a vacuum pump, the auxiliary device bracket being mounted on the electrical control box.
4. The continuous nano magnesium powder preparation apparatus according to claim 3, wherein the vacuum pump is connected with a vacuum tube, a filter is arranged at the inlet of the vacuum pump, the other end of the vacuum tube is connected with an inner tube of a spiral separator, and the spiral separator is arranged on the top sealing cover.
5. The continuous nano magnesium powder preparation apparatus according to claim 2, wherein the first working area is communicated with the main operation door, and the second working area is communicated with the observation window, the operation glove flange and the spiral separator.
6. The continuous nano magnesium powder preparation apparatus according to claim 5, wherein the main cabin bottom plate at the second working area is provided with a collecting port, and the collecting port is connected with a collecting bottle for collecting magnesium powder.
7. The continuous nano magnesium powder preparation device according to claim 6, wherein the inner wall of the main cabin, which is located in the second working space, is provided with a pulse air blowing port, a flange is welded at the pulse air blowing port, and the pulse air blowing port is connected with a pulse air blowing pipe through the flange.
8. The continuous nano magnesium powder preparation device according to claim 1, wherein the wire feeding mechanism comprises a motor and a transmission mechanism, the motor drives the insulating driving wheel and the insulating driven wheel to rotate through the transmission mechanism, and the insulating driving wheel and the insulating driven wheel are used for pushing magnesium wires to move.
9. The continuous nano magnesium powder preparation device according to claim 1, wherein the positive electrode conductive structure comprises a positive electrode insulating support and a pressing wheel set, and the pressing wheel set presses magnesium wires to be conducted with the positive electrode conductive plate under the action of gravity.
10. The continuous nano-magnesium powder manufacturing apparatus according to claim 1, wherein the negative electrode conductive structure includes a negative electrode insulating bracket for mounting the negative electrode plate.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2601766Y (en) * | 2003-02-26 | 2004-02-04 | 孙英黎 | Device for preparation of nanometer metal powder material of high purity |
| WO2011054113A1 (en) * | 2009-11-05 | 2011-05-12 | Ap&C Advanced Powders & Coatings Inc. | Methods and apparatuses for preparing spheroidal powders |
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| CN109702215B (en) * | 2019-01-25 | 2023-12-29 | 大连理工大学 | Thermal arc evaporation multi-cavity nano powder preparation device |
| CN110919017B (en) * | 2019-12-20 | 2023-03-28 | 北京工业大学 | Method and device for preparing spherical metal powder by hot wire assisted plasma arc |
| CN113290249B (en) * | 2021-04-19 | 2022-12-16 | 北京工业大学 | Method and equipment for preparing spherical metal powder by arc-assisted plasma atomization |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2601766Y (en) * | 2003-02-26 | 2004-02-04 | 孙英黎 | Device for preparation of nanometer metal powder material of high purity |
| WO2011054113A1 (en) * | 2009-11-05 | 2011-05-12 | Ap&C Advanced Powders & Coatings Inc. | Methods and apparatuses for preparing spheroidal powders |
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