Laser-assisted nano metal powder continuous production equipment

Abstract

The invention discloses laser-assisted nano metal powder continuous production equipment which comprises a smelting bin and a cooling bin, two first laser-assisted mechanisms are correspondingly arranged on the front side and the rear side of the interior of the smelting bin, the two first laser-assisted mechanisms are both used for emitting pulse laser into the smelting bin, and each first laser-assisted mechanism comprises a first laser device; the first laser can move and rotate up and down and can also swing in the X-axis direction and the Y-axis direction so as to adjust the emitting angle, the emitting direction and the falling point of the pulse laser. According to the method, a molten pool interface is disturbed through pulse laser, molten metal moves in a molten pool, melting of a target at the edge is promoted, the denudation efficiency of the target is remarkably improved, and the productivity is improved; and secondary ionization is carried out on the clusters of the clustered metal particles to generate charged particles, so that the originally clustered metal particles are scattered and re-polymerized into more uniform nano-particles with relatively small volume.

Description

Technical Field

[0001] The invention relates to the technical field of metal nano material synthesis, in particular to a laser-assisted nano metal powder continuous production device. Background Art

[0002] Nanometal materials have a wide range of applications in chemical production, energy storage catalysis, electronic and electrical engineering, biomedicine, etc. At present, the more mature methods for synthesizing nanometal materials are: inert gas evaporation, high temperature pressurization method, chemical hydrothermal synthesis method and plasma method, among which the plasma method is widely promoted because of the high purity of the metal powder products prepared and the environmentally friendly preparation process.

[0003] In the prior art, when preparing metal powders by plasma method, it is necessary to start an arc discharge on the surface of the metal target material, break down the melted target material by strong current and form a molten pool interface on the target material surface. Under the premise of not changing the arc starting position, the molten pool interface will always diffuse outward from its center point through heat conduction. The diffusion speed is slow, and the target material at the edge of the molten pool interface cannot be melted quickly, resulting in low target material stripping efficiency and low production capacity. At the same time, after the target material melts and evaporates, gaseous metal particles will be formed. During the cooling and nucleation process, the gaseous metal particles will aggregate into large and uneven clusters due to the mutual attraction between atoms, which will result in low quality of the formed nano-metal powder and different sizes of nano-powders. Summary of the invention

[0004] The purpose of the present invention is to provide a laser-assisted nano-metal powder continuous production equipment to solve the problems of low target material stripping efficiency, low production capacity, and low quality of the formed powder caused by the formation of large clusters when gaseous metal particles are cooled and nucleated.

[0005] To achieve the above object, the present invention provides the following technical solutions: A laser-assisted nano-metal powder continuous production device, comprising a smelting chamber and a cooling chamber, wherein two first laser-assisted mechanisms are correspondingly arranged on the front and rear sides of the smelting chamber, and the two first laser-assisted mechanisms are used to emit pulsed lasers into the smelting chamber, and the first laser-assisted mechanism comprises a first laser, and the first laser can move up and down and rotate, and can also swing in two directions of an X-axis and a Y-axis to adjust the emission angle, direction and landing point of the pulsed laser; A second laser auxiliary mechanism is arranged on both sides of the cooling bin, and both of the second laser auxiliary mechanisms are used to emit pulsed laser into the cooling bin. The second laser auxiliary mechanism includes a second laser, and the second laser can move in a Y shape in the same horizontal plane, and can also move up and down in the same vertical plane to adjust the emission direction and position of the pulsed laser.

[0006] As a further solution of the present invention: the first laser auxiliary mechanism also includes a fixed frame, a front support plate and a rear support plate, the front support plate and the rear support plate are arranged opposite to each other, the fixed frame is sleeved on the outside of the front and rear support plates, the first laser is arranged on the front side of the front support plate, a vertical slide groove is opened in the middle position of the rear support plate body, a slider is slidably connected in the slide groove, a driving shaft is rotatably connected to the slider, a round table is fixed at one end of the driving shaft, a driving wheel is sleeved and fixed on the driving shaft, a waist-shaped groove is opened at the front part of the front support plate body corresponding to one side of the round table, the round table is movably connected in the waist-shaped groove, a front-to-back through groove is opened in the middle position of the bottom of the waist-shaped groove, and one end of the driving shaft is movably connected in the through groove.

[0007] As a further solution of the present invention: a mounting plate is fixed on one side of the truncated table, and the mounting plate is arranged on the front side of the front support plate. Mounting seats are fixed on both sides of the front part of the mounting plate near the middle position, and a worm is rotatably connected between the two mounting seats. A second motor and a third motor are respectively installed at both ends of the front part of the mounting plate, and an output end of the second motor is connected to a first drive shaft, one end of the first drive shaft is rotatably connected to the mounting seat on the corresponding side, and an output end of the third motor is connected to a second drive shaft, and one end of the second drive shaft rotates through the mounting seat on the corresponding side and is fixedly connected to one end of the worm.

[0008] As a further solution of the present invention: a first mounting frame is arranged on the outer side of the mounting plate, and the first mounting frame has a U-shaped structure, and brackets are fixed at both ends of the mounting plate side, one of the brackets at both ends of the inner side of the first mounting frame is fixedly connected to the first driving shaft and the other is rotatably connected to the second driving shaft, a worm gear is rotatably connected at the center of the inside of the mounting frame, and the worm gear is meshingly connected to the worm, and a second mounting frame is arranged at the middle position of the front side of the first mounting frame, the second mounting frame is a U-shaped structure, and the two ends of the U-shaped frame body are respectively rotatably connected to the frame body of the first mounting frame on the corresponding side, and the two ends of the worm gear shaft are respectively rotatably passed through the inner wall of the first mounting frame on the corresponding side and extend to one side of the second mounting frame, and the two ends of the worm gear shaft are fixed on the second mounting frame, and a mounting table is fixed in the middle of the front side of the second mounting frame, and the first laser is mounted on the front side of the mounting table.

[0009] As a further scheme of the present invention: the upper and lower ends of the rear support plate body corresponding to the two sides of the slide groove are rotatably connected with sprockets, the two sprockets on adjacent sides form a group, and a chain is connected between the two sprockets in each group, the two chains are respectively located on both sides of the driving wheel, and the two side edges of the driving wheel are respectively meshed with the chains on the corresponding side, and a transmission shaft is provided on the side of the rear part of the rear support plate corresponding to the two sprockets, one end of the two transmission shafts is respectively connected and fixed to one end of the sprocket rotating shaft on the corresponding side, the other ends of the two transmission shafts are rotatably passed through the inner wall of the smelting bin and extend to the outside of the smelting bin, and a first motor is installed on the outside of the other ends of the two transmission shafts, and one end of the two first motor output shafts is respectively connected and fixed to one end of the transmission shaft on the corresponding side.

[0010] As a further solution of the present invention: the second laser auxiliary mechanism also includes three direction-changing adjustment components and a triangular bracket, the three direction-changing adjustment components are equidistantly arranged around the outside of the triangular bracket, the second laser is installed at the center of the bottom of the triangular bracket, and the three direction-changing adjustment components cooperate with each other to move the triangular bracket in multiple directions in the same horizontal plane. The moving trajectory of the triangular bracket in the same horizontal plane is Y-shaped, and the triangular bracket can also be moved up and down in the same vertical plane.

[0011] As a further solution of the present invention: the direction-changing adjustment component includes a connecting support plate, which is fixed to the top of the cooling bin, and guide rods are fixed on both sides of the bottom of the connecting support plate. A threaded rod is rotatably connected to the middle position of the bottom of the connecting support plate, and one end of the two guide rods and one end of the threaded rod extend into the interior of the cooling bin. A guide seat is slidably sleeved on the two guide rods, and the guide seat is threadedly sleeved on the outside of the threaded rod. The guide seat is located inside the cooling bin, and a fourth motor is installed on the top of the connecting support plate, and one end of the output shaft of the fourth motor is fixedly connected to one end of the threaded rod.

[0012] As a further scheme of the present invention: a first connecting block is fixed in the middle part of the front side of the guide seat, a first connecting rod is rotatably connected in the first connecting block, both ends of the first connecting rod extend to the outside of the first connecting block, a second connecting block is arranged on one side below the first connecting block, a second connecting rod is rotatably connected in the second connecting block, both ends of the second connecting rod extend to the outside of the second connecting block, connecting seats are fixed at both ends of the first connecting rod and both ends of the second connecting rod, the two connecting seats on adjacent sides form a group, a linkage rod is arranged between the upper and lower connecting seats of each group, steering joints are fixed at both ends of the two linkage rods, a plurality of steering joints are rotatably connected in the corresponding connecting seats, and one end of the second connecting block is connected and fixed to a corner of the triangular bracket.

[0013] As a further solution of the present invention: a placement groove is provided at the bottom of the smelting chamber, a crucible is placed in the placement groove, a plasma gun muzzle is opened on the side of the top of the smelting chamber corresponding to the crucible, a matrix tube holder and a plurality of plasma matrix tubes are provided in the plasma gun muzzle, the plurality of plasma matrix tubes are connected and fixed by the matrix tube holder, and one end of the plurality of plasma matrix tubes extends above the crucible, and an insulating sealing ring is provided on the outside of the matrix tube holder.

[0014] As a further solution of the present invention: a second interlayer is arranged in the inner wall of the cooling bin, and the second interlayer is a cavity arranged around the bin body, for accommodating a cooling medium, a plurality of cooling water pipes are fixed in the middle position inside the cooling bin, the plurality of cooling water pipes are evenly arranged, and both ends of the plurality of cooling water pipes are inserted into the second interlayer.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, a metal target is melted by plasma arc discharge. During the melting process, a pulsed laser is emitted from a high-temperature plasma zone in a melting chamber to a molten pool interface layer of the metal target. The high energy and strong electric field of the laser excite and disturb the molten pool interface, so that the molten metal moves in the molten pool, heat conduction is accelerated, the melting of the target at the edge is promoted, the stripping efficiency of the target is significantly improved, and the target is prevented from always breaking down and melting at the arc starting position, thereby improving the production capacity. Furthermore, a pulsed laser is emitted again to the gaseous metal during the process of cooling and nucleation in the cooling chamber. The strong electric field generated by the pulsed laser can secondary ionize the atomic clusters of the clustered metal particles and generate charged particles. Through the mutual repulsion between the charged particles, the originally clustered metal particles are broken up and re-aggregated into relatively small and more uniform nanoparticles, providing conditions for the nucleation growth of the nanoparticles, which is beneficial to regulating the size of the nanopowder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 This is a first perspective view of the smelting chamber and the cooling chamber in the present invention.

[0018] Figure 2 This is a second viewing angle diagram of the smelting chamber and the cooling chamber in the present invention.

[0019] Figure 3 This is a third viewing angle diagram of the smelting chamber and the cooling chamber in the present invention.

[0020] Figure 4 It is a schematic diagram of the internal structure of the smelting bin in the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the first laser auxiliary mechanism in the smelting chamber.

[0022] Figure 6 This is an exploded view of the first laser-assisted mechanism.

[0023] Figure 7 This is a first viewing angle diagram of the first laser in the first laser auxiliary mechanism.

[0024] Figure 8 This is a second viewing angle image of the first laser in the first laser auxiliary mechanism.

[0025] Fig. 9 It is a schematic diagram of the structure of the rear support plate in the first laser-assisted mechanism.

[0026] Fig.10 It is a schematic diagram of the internal structure of the cooling bin in the present invention.

[0027] Fig.11 It is a schematic diagram of the structure of the second laser auxiliary mechanism in the cooling chamber.

[0028] Fig.12 It is a schematic diagram of the structure of the direction-changing adjustment component in the second laser auxiliary mechanism.

[0029] Fig.13 for Fig.12 Enlarged view of point A in the middle.

[0030] Fig.14 It is a process flow chart of the present invention.

[0031] Reference numerals: 1-smelting chamber, 11-first air inlet pipe, 12-vacuum tube, 13-first water outlet pipe, 14-plasma torque tube, 15-first water inlet pipe; 16-first laser auxiliary mechanism, 161-fixed frame, 162-first laser, 163-transmission shaft, 164-first motor, 165-rear support plate, 166-front support plate, 167-waist round groove, 168-through groove, 169-mounting plate, 1610-second motor, 1611-first drive shaft, 1612-mounting seat, 1613-worm, 1614-second drive shaft, 1615-third motor, 1616-first mounting frame, 1617-worm wheel, 1618-second mounting frame, 1619-mounting table, 1620-chain, 1621-sprocket, 1622-slideway, 1623-slider, 1624-drive wheel, 1625-drive shaft, 1626-round table; 17-first interlayer, 18-crucible, 19-rectangular tube holder, 110-insulating sealing ring, 111-plasma gun muzzle, 112-placing groove, 113-first gas outlet pipe; 2-cooling bin, 21-second water outlet pipe, 22-second air outlet pipe, 23-second water inlet pipe, 24-powder collection pipe, 25-second interlayer; 26- second laser auxiliary mechanism; 261-direction adjustment assembly, 2611-fourth motor, 2612-connecting support plate, 2613-guide rod, 2614-guide seat, 2615-threaded rod, 2616-first connecting block, 2617-first connecting rod, 2618-second connecting rod, 2619-second connecting block, 26110-connecting seat, 26111-linking rod, 26112-steering joint; 262-triangular support, 263-second laser; 27- cooling water pipe, 28- second air intake pipe; 3-separation bin, 4-circulating water bin, 41-cooling coil, 5-gas tank, 6-refrigerator, 7-powder collection bin, 8-water supply pipeline, 9-return water pipeline, 10-return air pipeline. DETAILED DESCRIPTION

[0032] The following embodiments will be described in detail with reference to the accompanying drawings. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component may be enlarged or reduced. The embodiments listed in the present invention are only used to illustrate the present invention and are not used to limit the scope of the present invention. Any obvious modifications or changes made to the present invention do not depart from the spirit and scope of the present invention.

[0033] See also Figures 1 to 14In an embodiment of the present invention, a laser-assisted nano-metal powder continuous production device includes a smelting bin 1, a cooling bin 2, a separation bin 3 and a circulating water bin 4. The smelting bin 1, the cooling bin 2, the separation bin 3 and the circulating water bin 4 are connected in sequence through pipelines. A gas tank 5 is connected to one side of the smelting bin 1 through a pipeline. A refrigerator 6 is installed on one side of the circulating water bin 4. The cooling bin 2 and the separation bin 3 are both connected to a powder collecting bin 7 through pipelines below. A return water pipeline 9 and a water supply pipeline 8 are respectively provided on the upper and lower sides of the circulating water bin 4. The water inlet end of the water supply pipeline 8 is connected to the inside of the circulating water bin 4, and the water outlet end of the water supply pipeline 8 is respectively connected to the inside of the smelting bin 1, the cooling bin 2 and the separation bin 3 through pipelines; The water inlet end of the return water pipeline 9 is respectively connected to the inside of the smelting bin 1, the cooling bin 2 and the separation bin 3 through pipelines, and the water outlet end of the return water pipeline 9 is connected to the inside of the circulating water bin 4. Water pumps are installed on the return water pipeline 9 and the water supply pipeline 8. A cooling coil 41 is installed in the circulating water bin 4. The cooling coil 41 is used to cool the high-temperature and high-pressure steam generated in the smelting bin 1. The air outlet end of the cooling coil 41 is connected to the return air pipeline 10 through a pipeline. The return air pipeline 10 is arranged outside the entire device, and the other end of the return air pipeline 10 is inserted into the smelting bin 1 and connected to the inside of the smelting bin 1. An air pump is installed on the return air pipeline 10; In this embodiment, the target material (taking nickel as an example) is smelted in the smelting bin 1. Before smelting the target material, it is necessary to first evacuate the entire device. After evacuating the vacuum, the buffer gas is filled into the smelting bin 1 through the gas tank 5 and the gas pressure is maintained to a predetermined value. Then, the nickel material is smelted. The high-temperature and high-pressure steam generated after the nickel material is smelted flows along the pipeline into the cooling bin 2 for cooling. During the cooling process, the gaseous nickel metal condenses into nuclei and forms granular nanopowders. A part of the nickel nanopowder is deposited downward and flows along the pipeline into the powder collection bin 7 for storage, and another part of the nickel nanopowder enters the separation bin 3 with the steam. The separation bin 3 can use an existing cyclone separator to separate the nickel nanopowder again through the cyclone separator. The separated nano powder is deposited downward and flows into the powder collecting bin 7 along the pipeline for storage. The separated gas enters the cooling coil 41 through the pipeline. The cooling coil 41 and the gas in the pipeline are cooled down by the coordinated use of the circulating water bin 4 and the refrigerator 6. The cooled gas is sent back to the smelting bin 1 for reuse through the return air pipeline 10. During the working process of the entire device, the cooling medium in the circulating water bin 4 is continuously sent into the smelting bin 1, the cooling bin 2 and the separation bin 3 through the water supply pipeline 8 to continuously cool the bin body. At the same time, the cooling medium that has been heated up in each bin after use is continuously sent back to the circulating water bin 4 through the return water pipeline 9 and is cooled down again through the refrigerator 6. This cycle is repeated so that the entire device can operate continuously and stably to avoid excessive bin temperature.

[0034] See also Figures 1 to 4A vacuum tube 12 and a first air inlet pipe 11 are fixed to the upper and lower ends of one side of the smelting bin 1, and a first air outlet pipe 113 is fixed to the other side of the smelting bin 1. The first air outlet pipe 113 is connected to the cooling bin 2. A vacuum pump is installed on the vacuum tube 12 for evacuating the inside of the smelting bin 1. One end of the first air inlet pipe 11 is connected to the gas tank 5. The gas tank 5 fills the smelting bin 1 with buffer gas through the first air inlet pipe 11. A first interlayer 17 is provided in the inner wall of the smelting bin 1. The first interlayer 17 is a cavity arranged around the bin body and is used to accommodate a cooling medium. A first water outlet pipe 13 and a first water inlet pipe 15 are fixed to one side of the first interlayer 17 at the top and bottom ends of the smelting bin 1, respectively. The cooling medium is pumped into the first interlayer 17 through the first water inlet pipe 15, and the cooling medium in the first interlayer 17 is extracted outward through the first water outlet pipe 13. Two first laser auxiliary mechanisms 16 are correspondingly arranged on the front and rear sides of the interior of the smelting chamber 1, a placement groove 112 is arranged at the bottom of the interior of the smelting chamber 1, a crucible 18 is placed in the placement groove 112, a plasma gun muzzle 111 is opened on the top of the smelting chamber 1 on one side corresponding to the crucible 18, a matrix tube holder 19 and a plurality of plasma matrix tubes 14 are arranged in the plasma gun muzzle 111, the plurality of plasma matrix tubes 14 are connected and fixed by the matrix tube holder 19, and one end of the plurality of plasma matrix tubes 14 extends to the top of the crucible 18, a heat-insulating sealing ring 110 is arranged on the outside of the matrix tube holder 19, the heat-insulating sealing ring 110 is used to insulate the matrix tube holder 19, and the gap between the plasma gun muzzle 111 and the matrix tube holder 19 is sealed at the same time; In this embodiment, the nickel material used to prepare nickel powder is used as the anode and placed in the crucible 18, a tungsten rod is used as the cathode and inserted into the plasma matrix tube 14, the electrode spacing between the positive and negative electrodes is set to 2 mm, and the vacuum tube 12 and the vacuum pump are used to evacuate the interior of the smelting chamber 1. After evacuation, a buffer gas is filled into the smelting chamber 1 through the gas tank 5 and the first air inlet pipe 11. The buffer gas can be a mixture of hydrogen / argon with a volume ratio of 1:2. The total gas pressure is maintained at 60 kPa. After the buffer gas is filled, the gas tank 5 is closed to wait for arcing; the external circuit connects the positive and negative electrodes, and the current in the circuit is increased to 200 A through the electrical control system, arc discharge is started and the voltage is kept constant at 25 V. After discharging for 1 hour, the power is turned off. During the discharge process, the nickel material melts and evaporates and is mixed in the buffer gas.

[0035] See also Figures 5 to 9The first laser auxiliary mechanism 16 includes a fixed frame 161, a front support plate 166, a rear support plate 165 and a first laser 162. The front support plate 166 and the rear support plate 165 are arranged opposite to each other. The fixed frame 161 is sleeved on the outside of the front and rear support plates to encapsulate and fix the front and rear support plates. The first laser 162 is arranged on the front side of the front support plate 166. A vertical slide groove 1622 is opened in the middle position of the rear support plate 165. A slider 1623 is slidably connected in the slide groove 1622. A driving shaft 1625 is rotatably connected to the slider 1623. A round table 1626 is fixed to one end of the driving shaft 1625. A driving wheel 1624 is sleeved and fixed on the driving shaft 1625. The driving wheel 1624 is a sprocket. The upper and lower ends of the rear support plate 165 corresponding to the two sides of the slide groove 1622 are rotatably connected with sprockets 1621, and the two sprockets 1621 on the adjacent sides form a group, and a chain 1620 is connected between the two sprockets 1621 of each group, and the two chains 1620 are respectively located on the two sides of the driving wheel 1624, and the two side edges of the driving wheel 1624 are respectively meshed and connected with the chain 1620 on the corresponding side; A transmission shaft 163 is provided on one side of the rear support plate 165 corresponding to the two sprocket wheels 1621, one end of the two transmission shafts 163 is respectively connected and fixed to one end of the rotating shaft of the sprocket wheel 1621 on the corresponding side, the other ends of the two transmission shafts 163 are rotated to penetrate the inner wall of the smelting chamber 1 and extend to the outside of the smelting chamber 1, and the outside of the other ends of the two transmission shafts 163 are installed with a first motor 164, and one end of the output shaft of the two first motors 164 is respectively connected and fixed to one end of the transmission shaft 163 on the corresponding side; When the two first motors 164 drive the corresponding two sprockets 1621 to rotate synchronously in opposite directions through the corresponding transmission shafts 163, the two chains 1620 on the side close to the driving wheel 1624 will move synchronously in the same direction. At this time, the driving wheel 1624 engaged between the two chains 1620 will move synchronously in the same direction with the two chains, and the slider 1623 will slide in the slide groove 1622 accordingly. When the two first motors 164 drive the corresponding two sprockets 1621 to rotate synchronously in the same direction through the corresponding transmission shafts 163, the two chains 1620 will produce synchronous reverse movement on the side close to the driving wheel 1624. At this time, the driving wheel 1624 engaged between the two chains 1620 will stay in place and produce self-rotation movement, and the slider 1623 will also stop in the slide groove 1622. A waist-shaped groove 167 is provided at the front of the front support plate 166 on one side of the round platform 1626. The round platform 1626 is movably connected in the waist-shaped groove 167. A through groove 168 is provided at the middle of the bottom of the waist-shaped groove 167 and runs through the front and rear. One end of the driving shaft 1625 is movably connected in the through groove 168. A mounting plate 169 is fixed to one side of the round table 1626, and the mounting plate 169 is arranged on the front side of the front support plate 166. Mounting seats 1612 are fixed to both sides of the front part of the mounting plate 169 near the middle position, and a worm 1613 is rotatably connected between the two mounting seats 1612. A second motor 1610 and a third motor 1615 are respectively installed at two ends of the front part of the mounting plate 169, and an output end of the second motor 1610 is connected to a first drive shaft 1611, and one end of the first drive shaft 1611 is rotatably connected to the mounting seat 1612 on the corresponding side, and an output end of the third motor 1615 is connected to a second drive shaft 1614, and one end of the second drive shaft 1614 rotates through the mounting seat 1612 on the corresponding side and is fixedly connected to one end of the worm 1613; A first mounting frame 1616 is disposed on the outside of the mounting plate 169. The first mounting frame 1616 has a square-shaped structure, and brackets are fixed to both ends of the first mounting frame 1616 facing the mounting plate 169. One of the brackets at both ends of the inner side of the first mounting frame 1616 is fixedly connected to the first drive shaft 1611 and the other is rotatably connected to the second drive shaft 1614. A worm gear 1617 is rotatably connected to the center of the mounting frame 1616, and the worm gear 1617 is meshed with the worm 1613. A second mounting frame 1618 is disposed in the middle of the front side of the first mounting frame 1616. The second mounting frame 1618 is a U-shaped structure. The two ends of the U-shaped frame are respectively rotatably connected to the frame of the first mounting frame 1616 on the corresponding side. The two ends of the rotating shaft of the worm gear 1617 rotate through the inner wall of the first mounting frame 1616 on the corresponding side and extend to one side of the second mounting frame 1618. Both ends of the rotating shaft of the worm gear 1617 are fixed on the second mounting frame 1618. When the worm gear 1617 rotates, it will drive the second mounting frame 1618 to rotate synchronously. A mounting platform 1619 is fixed in the middle of the front side of the second mounting frame 1618. The first laser 162 is installed on the front side of the mounting platform 1619. In this embodiment, when the nickel material in the crucible 18 is melted, it will diffuse outward from the center point of its own arc discharge to form a molten pool. Under the premise of not changing the arc starting position, the molten pool interface will always diffuse outward from the center point to the outer circumference. The diffusion principle is to carry out through the heat conduction of the molten metal. The diffusion speed is slow, and the nickel material at the edge of the molten pool interface cannot be melted quickly. At this time, the first laser auxiliary mechanism 16 emits a pulsed laser to the molten pool interface to disturb the molten pool interface, so that the molten metal moves in the interface, accelerates heat conduction, and promotes the melting of the nickel material at the edge, which significantly improves the erosion efficiency of the target material, avoids the target material from always breaking down and melting at the arc starting position, and thus improves the production capacity; The first laser 162 in the first laser auxiliary mechanism 16 can move up and down, rotate, or swing in the X-axis and Y-axis directions. By moving the laser up and down, rotating and swinging the laser, the angle, direction and landing point of the pulse laser emitted by the laser can be adjusted, thereby increasing the coverage of the pulse laser, so that the pulse laser can more comprehensively disturb the molten pool interface, further promote the flow of the molten liquid in the interface, and further improve the target material stripping efficiency. Specifically, the two first motors 164 are used in conjunction to drive the two sprockets 1621 to move synchronously in opposite directions. At this time, the chain 1620 between the left and right groups of sprockets 1621 will drive the driving wheel 1624 to move up (or down) synchronously, thereby driving the laser located in front of the driving wheel 1624 to move up and down synchronously. When the two first motors 164 drive the two sprockets 1621 to move synchronously in the same direction, the driving wheel 1624 located between the two chains 1620 will rotate in place under the action of the chains on both sides, thereby driving the laser located in front of the driving wheel 1624 to rotate synchronously. When the laser is swung in the X-axis direction, the worm 1613 can be rotated by the third motor 1615. The worm 1613 cooperates with the worm wheel 1617 to drive the worm wheel 1617 to rotate. The rotating shaft of the worm wheel 1617 is fixed on the second mounting frame 1618. When the worm wheel 1617 rotates, it will drive the second mounting frame 1618 to rotate synchronously, thereby driving the first laser 162 located on one side of the second mounting frame 1618 to produce synchronous swing. The swing direction can be left or right, and the swing direction is determined according to the position of the molten pool interface that needs to be disturbed. When the laser is swung in the Y-axis direction, the first drive shaft 1611 can be rotated by the second motor 1610, the first mounting bracket 1616 is fixedly connected to the first drive shaft 1611, and the first mounting bracket 1616 is rotatably connected to the second drive shaft 1614. When the first drive shaft 1611 rotates, it will drive the first mounting bracket 1616 to rotate synchronously, thereby driving the second mounting bracket 1618 and the first laser 162 located on one side of the first mounting bracket 1616 to swing synchronously. The direction of the swing can be upward or downward, and the swing direction is determined according to the position of the molten pool interface that needs to be disturbed.

[0036] See also Figures 10 to 13 A second air inlet pipe 28 and a second air outlet pipe 22 are respectively fixed on both sides of the cooling bin 2, one end of the second air inlet pipe 28 is connected and fixed to one end of the first air outlet pipe 113, and the high-temperature and high-pressure gas mixed with gaseous nickel metal generated in the smelting bin 1 enters the cooling bin 2 along the second air inlet pipe 28, and the mixed gas after cooling flows into the separation bin 3 along the second air outlet pipe 22 for subsequent treatment, and a second interlayer 25 is provided in the inner wall of the cooling bin 2, and the second interlayer 25 is a cavity arranged around the bin body, and is used to accommodate the cooling medium; A second water outlet pipe 21 and a second water inlet pipe 23 are respectively fixed on one side of the second interlayer 25 at both ends of the top and bottom of the cooling bin 2. The cooling medium is pumped into the second interlayer 25 through the second water inlet pipe 23, and the cooling medium in the second interlayer 25 is drawn out through the second water outlet pipe 21. A plurality of cooling water pipes 27 are fixed in the middle position inside the cooling bin 2. The plurality of cooling water pipes 27 are evenly arranged, and both ends of the plurality of cooling water pipes 27 are inserted into the second interlayer 25. A second laser auxiliary mechanism 26 is provided on both sides of the cooling bin 2. Powder collecting pipes 24 are fixed on both sides of the bottom of the cooling bin 2. One end of the two powder collecting pipes 24 is connected to the powder collecting bin 7. The nickel nano metal powder cooled and nucleated in the cooling bin 2 flows into the powder collecting bin 7 for storage through the powder collecting pipes 24. The second laser auxiliary mechanism 26 includes three direction-changing adjustment components 261, a triangular bracket 262, and a second laser 263. The three direction-changing adjustment components 261 are arranged around the outside of the triangular bracket 262 at equal intervals. The second laser 263 is installed at the center of the bottom of the triangular bracket 262. The three direction-changing adjustment components 261 cooperate with each other to move the triangular bracket 262 in multiple directions in the same horizontal plane. The moving trajectory of the triangular bracket 262 in the same horizontal plane is Y-shaped. The triangular bracket 262 can also be moved up and down in the same vertical plane. By moving the triangular bracket 262, the second laser 263 is driven to move synchronously, the direction and position of the laser emitting the pulsed laser are adjusted, and the coverage of the pulsed laser is expanded, so that the pulsed laser can better perform secondary ionization on the atomic clusters of nickel nanoparticles. The direction-changing adjustment component 261 includes a connecting support plate 2612, which is fixed on the top of the cooling bin 2. Guide rods 2613 are fixed on both sides of the bottom of the connecting support plate 2612. A threaded rod 2615 is rotatably connected to the middle position of the bottom of the connecting support plate 2612. One end of the two guide rods 2613 and one end of the threaded rod 2615 extend to the inside of the cooling bin 2. A guide seat 2614 is slidably sleeved on the two guide rods 2613, and the guide seat 2614 is threadedly sleeved on the outside of the threaded rod 2615. The guide seat 2614 is located inside the cooling bin 2. A fourth motor 2611 is installed on the top of the connecting support plate 2612. One end of the output shaft of the fourth motor 2611 is fixedly connected to one end of the threaded rod 2615. The fourth motor 2611 rotates the threaded rod 2615 to drive the guide seat 2614 to slide along the axial direction of the guide rod 2613. A first connecting block 2616 is fixed to the middle of the front side of the guide seat 2614, and a first connecting rod 2617 is rotatably connected to the first connecting block 2616, and both ends of the first connecting rod 2617 extend to the outside of the first connecting block 2616. A second connecting block 2619 is provided on one side below the first connecting block 2616, and a second connecting rod 2618 is rotatably connected to the second connecting block 2619, and both ends of the second connecting rod 2618 extend to the outside of the second connecting block 2619. Both ends of the second connecting rod 2618 and the two ends of the second connecting rod 2617 are fixed with connecting seats 26110, and the two connecting seats 26110 on the adjacent sides form a group. A linkage rod 26111 is provided between the upper and lower connecting seats 26110 of each group, and both ends of the two linkage rods 26111 are fixed with steering joints 26112. The multiple steering joints 26112 are rotatably connected to the corresponding connecting seats 26110 respectively. One end of the second connecting block 2619 is connected and fixed to an angle of the triangular bracket 262. In this embodiment, the gaseous nickel nanometal is cooled and nucleated in the cooling chamber 2 to form nickel nanometal powder. When no external electric field is applied, the nickel metal particles will aggregate into agglomerates and form large and uneven clusters under the mutual attraction between atoms. The molding quality of the nickel nanometal powder is low, and the size of the nanopowder is different. Therefore, an electric field can be applied to the gaseous nickel metal during the cooling and nucleation process to perform secondary ionization on the atomic clusters of the agglomerated nickel metal particles and generate charged particles. Through the mutual repulsion between the charged particles, the originally clustered nickel metal particles are broken up and re-aggregated into relatively small and more uniform nanoparticles, providing conditions for the nucleation and growth of the nanoparticles, which is conducive to regulating the size of the nanopowder. Specifically, a pulsed laser is emitted into the cooling bin 2 by the second laser 263. The high-intensity electric field generated by the pulsed laser can ionize the atoms in the nickel atom clusters and generate charged particles. Before ionization, the nickel metal is free in the cooling bin 2 in a gaseous state. When the pulsed laser is emitted at a fixed position, it can only act on a small area and cannot fully ionize the gaseous nickel metal in the bin. At this time, the second laser 263 can be moved up and down, left and right, and forward and backward by using multiple direction-changing adjustment components 261 to adjust the emission direction of the pulsed laser so that the laser can fully cover the gaseous nickel metal in the bin and fully ionize the nickel metal atom clusters. When the position of the laser is adjusted by using a plurality of direction-changing adjustment components 261 in coordination, the laser can be moved from three different directions in the same horizontal plane, or can be moved up and down in the same vertical plane. When the laser is moved in the same horizontal plane, it is only necessary to start the fourth motor 2611 of one of the plurality of direction-changing adjustment components 261, and the corresponding guide seat 2614 is driven to move up and down by the current fourth motor 2611. When the guide seat 2614 moves, the corresponding second connecting block 2619 is driven to move. The second connecting block 2619 is fixed to the triangular bracket 262. Under the limiting effect of the triangular bracket 262, the second connecting block 2619 that should originally move up and down can only move horizontally to one side, thereby driving the triangular bracket 262 to move synchronously to one side. The three direction-changing adjustment components 261 cooperate to enable the triangular bracket 262 and the laser to perform Y-shaped motion in the same horizontal plane. When a plurality of fourth motors 2611 are driven at the same time, the triangular bracket 262 and the laser can be driven to move up and down in the same vertical plane.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A laser-assisted nano-metal powder continuous production device, comprising a smelting chamber (1) and a cooling chamber (2), characterized in that: Two first laser auxiliary mechanisms (16) are correspondingly arranged on the front and rear sides of the interior of the smelting chamber (1), and the two first laser auxiliary mechanisms (16) are used to emit pulsed lasers into the smelting chamber (1). The first laser auxiliary mechanism (16) comprises a first laser (162), and the first laser (162) can move up and down and rotate, and can also swing in the directions of the X-axis and the Y-axis to adjust the emission angle, direction and landing point of the pulsed laser; Second laser auxiliary mechanisms (26) are provided on both sides of the interior of the cooling bin (2). The two second laser auxiliary mechanisms (26) are used to emit pulsed lasers into the cooling bin (2). The second laser auxiliary mechanisms (26) include a second laser (263). The second laser (263) can move in a Y shape in the same horizontal plane, and can also move up and down in the same vertical plane to adjust the emission direction and position of the pulsed laser.

2. The laser-assisted nano-metal powder continuous production equipment according to claim 1, characterized in that: The first laser auxiliary mechanism (16) further comprises a fixing frame (161), a front support plate (166) and a rear support plate (165), wherein the front support plate (166) and the rear support plate (165) are arranged opposite to each other, the fixing frame (161) is sleeved on the outside of the front and rear support plates, the first laser (162) is arranged on the front side of the front support plate (166), a vertical slide groove (1622) is provided in the middle of the plate body of the rear support plate (165), a slider (1623) is slidably connected in the slide groove (1622), and a slider (1623) is rotatably connected on the slider (1623) A driving shaft (1625) is provided, a round platform (1626) is fixed at one end of the driving shaft (1625), a driving wheel (1624) is sleeved and fixed on the driving shaft (1625), a waist-shaped groove (167) is provided at the front part of the front support plate (166) corresponding to one side of the round platform (1626), the round platform (1626) is movably connected in the waist-shaped groove (167), a through groove (168) penetrating front and rear is provided at the middle position of the bottom of the waist-shaped groove (167), and one end of the driving shaft (1625) is movably connected in the through groove (168).

3. The laser-assisted nano-metal powder continuous production equipment according to claim 2, characterized in that: A mounting plate (169) is fixed to one side of the truncated table (1626), the mounting plate (169) being arranged on the front side of the front support plate (166), mounting seats (1612) being fixed to both sides of the front portion of the mounting plate (169) near the middle position, a worm (1613) being rotatably connected between the two mounting seats (1612), a second motor (1610) and a third motor (1615) being respectively mounted to the two ends of the front portion of the mounting plate (169), an output end of the second motor (1610) being connected to a first drive shaft (1611), one end of the first drive shaft (1611) being rotatably connected to the mounting seat (1612) on the corresponding side, an output end of the third motor (1615) being connected to a second drive shaft (1614), one end of the second drive shaft (1614) being rotatably passed through the mounting seat (1612) on the corresponding side and being connected and fixed to one end of the worm (1613).

4. The laser-assisted nano-metal powder continuous production equipment according to claim 3, characterized in that: A first mounting frame (1616) is arranged on the outside of the mounting plate (169). The first mounting frame (1616) has a square-shaped structure, and brackets are fixed to both ends of the first mounting frame (1616) on the side facing the mounting plate (169). One of the brackets at the two ends of the inner side of the first mounting frame (1616) is fixedly connected to the first drive shaft (1611), and the other is rotatably connected to the second drive shaft (1614). A worm gear (1617) is rotatably connected at the center of the interior of the mounting frame (1616), and the worm gear (1617) is meshedly connected to the worm (1613). A second mounting frame (1616) is arranged at the middle position of the front side of the first mounting frame (1616). 1618), the second mounting frame (1618) is a U-shaped structure, and the two ends of the U-shaped frame body are respectively rotatably connected to the frame body of the first mounting frame (1616) on the corresponding side, and the two ends of the worm gear (1617) shaft respectively rotate through the inner wall of the first mounting frame (1616) on the corresponding side and extend to one side of the second mounting frame (1618), and the two ends of the worm gear (1617) shaft are fixed on the second mounting frame (1618), and a mounting platform (1619) is fixed in the middle of the front side of the second mounting frame (1618), and the first laser (162) is installed on the front side of the mounting platform (1619).

5. The laser-assisted nano-metal powder continuous production equipment according to claim 4, characterized in that: The upper and lower ends of the rear support plate (165) corresponding to the two sides of the slide groove (1622) are rotatably connected to sprockets (1621), the two sprockets (1621) on adjacent sides form a group, and a chain (1620) is connected between the two sprockets (1621) in each group, and the two chains (1620) are respectively located on both sides of the driving wheel (1624), and the two side edges of the driving wheel (1624) are respectively meshed and connected with the chain (1620) on the corresponding side, and the rear portion of the rear support plate (165) corresponds to the two sprockets ( A transmission shaft (163) is provided on one side of the sprocket wheel (1621), one end of each of the transmission shafts (163) is respectively connected and fixed to one end of a rotating shaft of the sprocket wheel (1621) on the corresponding side, the other ends of each of the transmission shafts (163) rotate to penetrate the inner wall of the smelting bin (1) and extend to the outside of the smelting bin (1), and a first motor (164) is installed outside the other ends of each of the transmission shafts (163), and one end of the output shafts of each of the first motors (164) is respectively connected and fixed to one end of the transmission shaft (163) on the corresponding side.

6. The laser-assisted nano-metal powder continuous production equipment according to claim 1, characterized in that: The second laser auxiliary mechanism (26) further comprises three direction-changing adjustment components (261) and a triangular bracket (262). The three direction-changing adjustment components (261) are arranged at equal intervals around the outside of the triangular bracket (262). The second laser (263) is installed at the center of the bottom of the triangular bracket (262). The three direction-changing adjustment components (261) cooperate with each other to move the triangular bracket (262) in multiple directions in the same horizontal plane. The movement trajectory of the triangular bracket (262) in the same horizontal plane is Y-shaped. The triangular bracket (262) can also be moved up and down in the same vertical plane.

7. The laser-assisted nano-metal powder continuous production equipment according to claim 6, characterized in that: The direction-changing adjustment component (261) comprises a connecting support plate (2612), wherein the connecting support plate (2612) is fixed to the top of the cooling bin (2), guide rods (2613) are fixed to both sides of the bottom of the connecting support plate (2612), a threaded rod (2615) is rotatably connected to the middle position of the bottom of the connecting support plate (2612), one end of the two guide rods (2613) and one end of the threaded rod (2615) both extend into the interior of the cooling bin (2), a guide seat (2614) is slidably sleeved on the two guide rods (2613), and the guide seat (2614) is threadedly sleeved on the outside of the threaded rod (2615), and the guide seat (2614) is located inside the cooling bin (2), and a fourth motor (2611) is installed on the top of the connecting support plate (2612), and one end of the output shaft of the fourth motor (2611) is fixedly connected to one end of the threaded rod (2615).

8. The laser-assisted nano-metal powder continuous production equipment according to claim 7, characterized in that: A first connecting block (2616) is fixed in the middle of the front side of the guide seat (2614), a first connecting rod (2617) is rotatably connected to the first connecting block (2616), both ends of the first connecting rod (2617) extend to the outside of the first connecting block (2616), a second connecting block (2619) is provided on one side below the first connecting block (2616), a second connecting rod (2618) is rotatably connected to the second connecting block (2619), both ends of the second connecting rod (2618) extend to the outside of the second connecting block (2619), and the first connecting rod Both ends of the second connecting rod (2617) and both ends of the second connecting rod (2618) are fixed with connecting seats (26110), and the two connecting seats (26110) on the adjacent sides form a group. A linkage rod (26111) is provided between the upper and lower connecting seats (26110) of each group, and both ends of the two linkage rods (26111) are fixed with steering joints (26112). The plurality of steering joints (26112) are rotatably connected to the corresponding connecting seats (26110), and one end of the second connecting block (2619) is connected and fixed to a corner of the triangular bracket (262).

9. The laser-assisted nano-metal powder continuous production equipment according to claim 1, characterized in that: A placement groove (112) is provided at the bottom of the smelting chamber (1), a crucible (18) is placed in the placement groove (112), a plasma gun mouth (111) is provided on a side of the top of the smelting chamber (1) corresponding to the crucible (18), a matrix tube holder (19) and a plurality of plasma matrix tubes (14) are provided in the plasma gun mouth (111), the plurality of plasma matrix tubes (14) are connected and fixed by the matrix tube holder (19), and one end of the plurality of plasma matrix tubes (14) extends above the crucible (18), and a heat insulating sealing ring (110) is provided on the outside of the matrix tube holder (19).

10. The laser-assisted nano-metal powder continuous production equipment according to claim 1, characterized in that: A second interlayer (25) is provided in the inner wall of the cooling bin (2); the second interlayer (25) is a cavity provided around the bin body and used to accommodate a cooling medium; a plurality of cooling water pipes (27) are fixed in the middle position inside the cooling bin (2); the plurality of cooling water pipes (27) are evenly arranged, and both ends of the plurality of cooling water pipes (27) are inserted into the second interlayer (25).

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